/* ============================================================
   Derek marketing — site design system (rebuild)
   "白纸展签 / gallery label" aesthetic. Design limits 1440 / 375,
   linear in between (clamp); structural break at 900px.
   Load order: css/tokens.css → css/reset.css → css/site.css.

   Section map (design-brief §5):
     aliases → base → utilities → nav (sticky / Product dropdown /
     mobile drawer) → hero → exhibit → ledger → modules → ai →
     sides → health → steps → integrations → stats → cta → footer →
     subpages (pagehero/prob/feat/uc/sec/band/own/switcher) →
     legal → motion → @media ≤900px (all pages)
   ============================================================ */

/* ── Aliases ─────────────────────────────────────────────── */
:root {
  --st-ink:        var(--df-text-primary);
  --st-gold:       #FFB923;            /* buttons / dark-bg accents only */
  --st-gold-hover: #FFC547;
  --st-gold-text:  var(--df-gold-text);/* gold as text on light bg (#8A5E07) */
  --st-hairline:   var(--df-hairline);
  --st-rule:       rgba(25, 25, 24, .2);
  --st-rule-soft:  rgba(25, 25, 24, .12);
  --st-dark-1:     #191918;
  --st-dark-2:     #1f1f1e;
  --st-dark-3:     #2a2a29;
  --st-cream:      #fffef2;
  --st-d-hair:     rgba(255, 254, 242, .09);
  --st-d-rule:     rgba(255, 254, 242, .12);
  --st-mono:       'JetBrains Mono', monospace;
  --st-padx:       clamp(20px, 4.5px + 4.13vw, 64px);
  --st-h1:         clamp(36px, 21.9px + 3.76vw, 76px);
  --st-h2:         clamp(30px, 22.9px + 1.88vw, 50px);
  --st-nav-h:      72px;
}

/* ── Base ────────────────────────────────────────────────── */
body {
  margin: 0;
  background: var(--df-bg-base);
  color: var(--st-ink);
  font-family: var(--df-font-body);
  -webkit-font-smoothing: antialiased;
  /* reset.css sets body{overflow-x:hidden}, which silently turns body into
     the scroll container (overflow-y computes to auto). clip keeps the
     horizontal safety net without hijacking viewport scrolling. */
  overflow-x: clip;
}

/* sticky-nav anchor offset */
html { scroll-padding-top: calc(var(--st-nav-h) + 16px); }
[id] { scroll-margin-top: calc(var(--st-nav-h) + 16px); }

a { color: var(--st-ink); text-decoration: none; }
a:hover { color: var(--st-gold-text); }
::selection { background: rgba(255, 185, 35, .16); color: var(--st-ink); }

.st-container { max-width: 1240px; margin: 0 auto; }

/* ── Utilities ───────────────────────────────────────────── */
.st-skip {
  position: fixed; top: -64px; left: 16px; z-index: var(--df-z-toast);
  background: var(--st-dark-1); color: var(--st-cream);
  border-radius: 6px; padding: 10px 18px;
  font-size: 12.5px; font-weight: 600;
  transition: top var(--df-duration) var(--df-ease);
}
.st-skip:focus, .st-skip:focus-visible { top: 12px; color: var(--st-cream); }

/* Shared type */
.st-eyebrow {
  font-size: 11px; font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase; color: var(--st-gold-text);
}
.st-eyebrow--dark { color: var(--st-gold); letter-spacing: .1em; }
/* mono section number preceding the eyebrow (01–08 homepage制式) */
.st-eyebrow__num {
  font-family: var(--st-mono); font-weight: 500;
  letter-spacing: .1em; margin-right: 10px;
}
.st-h2 {
  margin: 26px 0 0; font-size: var(--st-h2); line-height: 1.12;
  letter-spacing: -.03em; font-weight: 300;
}
.st-h2 .accent { font-weight: 500; color: var(--st-gold-text); }
.st-sub {
  margin: 24px auto 0; font-size: 15.5px; line-height: 1.7;
  color: rgba(25, 25, 24, .7);
}
.st-mono-meta {
  font-family: var(--st-mono); font-size: 10.5px;
  letter-spacing: .12em; color: rgba(25, 25, 24, .5);
}
.st-center { text-align: center; }

/* Buttons */
.st-btn {
  display: inline-block; background: var(--st-gold); color: var(--st-ink);
  border: 0; border-radius: 6px; padding: 15px 30px;
  font-family: inherit; font-size: 13.5px; font-weight: 600; cursor: pointer;
  transition: background var(--df-duration) var(--df-ease);
}
.st-btn:hover { background: var(--st-gold-hover); color: var(--st-ink); }
.st-textlink {
  font-size: 13.5px; font-weight: 500; color: rgba(25, 25, 24, .75);
  transition: color var(--df-duration) var(--df-ease);
}
.st-textlink:hover { color: var(--st-ink); }

/* ── Nav (sticky + Product dropdown + mobile drawer) ─────── */
.st-nav {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--st-nav-h); padding: 0 var(--st-padx);
  border-bottom: 1px solid var(--st-hairline);
  position: sticky; top: 0; z-index: var(--df-z-sticky);
  background: var(--df-bg-base);
  transition: box-shadow var(--df-duration) var(--df-ease);
}
.st-nav.is-scrolled { box-shadow: var(--df-shadow-sm); }
.st-nav__logo { display: flex; align-items: center; gap: 10px; }
.st-nav__logo svg { display: block; }
.st-nav__brand { display: block; font-size: 16px; font-weight: 600; line-height: 1; }
.st-nav__by { display: block; font-size: 10.5px; color: rgba(25, 25, 24, .55); margin-top: 2px; }
.st-nav__links { display: flex; align-items: center; gap: 36px; font-size: 13px; font-weight: 500; }
.st-nav__link { color: rgba(25, 25, 24, .72); }
.st-nav__link:hover { color: var(--st-ink); }
.st-nav__link.is-active,
.st-nav__link[aria-current="page"] { color: var(--st-ink); font-weight: 600; }

/* Product dropdown — pure CSS (:hover / :focus-within), no JS */
.st-nav__drop { position: relative; }
.st-nav__dropbtn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 0; cursor: default;
}
.st-nav__dropbtn svg { transition: transform var(--df-duration) var(--df-ease); }
.st-nav__drop:hover .st-nav__dropbtn,
.st-nav__drop:focus-within .st-nav__dropbtn { color: var(--st-ink); }
.st-nav__drop:hover .st-nav__dropbtn svg,
.st-nav__drop:focus-within .st-nav__dropbtn svg { transform: rotate(180deg); }
.st-nav__dropmenu {
  position: absolute; top: calc(100% + 14px); left: 50%;
  min-width: 268px; padding: 8px;
  background: var(--df-bg-white);
  border: 1px solid var(--st-hairline); border-radius: 8px;
  box-shadow: var(--df-shadow-md);
  opacity: 0; visibility: hidden;
  transform: translate(-50%, 6px);
  transition: opacity var(--df-duration) var(--df-ease),
              transform var(--df-duration) var(--df-ease),
              visibility 0s linear var(--df-duration);
}
/* invisible bridge so hover survives the gap below the trigger */
.st-nav__dropmenu::before {
  content: ''; position: absolute; top: -14px; left: 0; right: 0; height: 14px;
}
.st-nav__drop:hover .st-nav__dropmenu,
.st-nav__drop:focus-within .st-nav__dropmenu {
  opacity: 1; visibility: visible; transform: translate(-50%, 0);
  transition-delay: 0s;
}
.st-nav__dropitem { display: block; padding: 10px 14px; border-radius: 6px; }
.st-nav__dropitem:hover { background: var(--df-bg-base); }
.st-nav__dropitem-name {
  display: block; font-size: 13px; font-weight: 600;
  letter-spacing: -.005em; color: var(--st-ink);
}
.st-nav__dropitem:hover .st-nav__dropitem-name { color: var(--st-gold-text); }
.st-nav__dropitem-desc {
  display: block; margin-top: 3px; font-size: 11.5px; font-weight: 400;
  line-height: 1.45; color: rgba(25, 25, 24, .55);
}
.st-signin {
  display: inline-block; background: #14130F; color: var(--st-cream);
  border-radius: 6px; padding: 9px 20px; font-size: 12.5px; font-weight: 600;
  transition: background var(--df-duration) var(--df-ease);
}
.st-signin:hover { background: var(--st-dark-3); color: var(--st-cream); }
.st-nav__actions { display: none; }
.st-nav__burger {
  display: none; background: none; border: 0; padding: 6px 0 6px 6px; cursor: pointer;
}
.st-nav__burger rect { transition: opacity var(--df-duration) var(--df-ease); }

/* Mobile drawer (≤900px) — 7 links: Platform + 4 products + Use cases + Security */
.st-nav__menu {
  display: none; position: absolute; top: 100%; left: 0; right: 0; z-index: 40;
  background: var(--df-bg-base); border-bottom: 1px solid var(--st-hairline);
  box-shadow: var(--df-shadow-md);
  padding: 8px var(--st-padx) 18px;
}
.st-nav__menu.is-open { display: block; }
.st-nav__menu a {
  display: flex; align-items: baseline; gap: 12px;
  padding: 13px 0; font-size: 14.5px; font-weight: 500;
  color: rgba(25, 25, 24, .8); border-bottom: 1px solid var(--st-hairline);
}
.st-nav__menu a:last-child { border-bottom: 0; }
.st-nav__menu a[aria-current="page"] { color: var(--st-ink); font-weight: 600; }
.st-nav__menu-label {
  display: block; padding: 16px 0 4px;
  font-family: var(--st-mono); font-size: 9.5px; letter-spacing: .16em;
  color: rgba(25, 25, 24, .45);
}
.st-nav__menu-idx {
  font-family: var(--st-mono); font-size: 10.5px; letter-spacing: .1em;
  color: var(--st-gold-text);
}

/* ── Hero ────────────────────────────────────────────────── */
.st-hero { padding: 96px var(--st-padx) 0; text-align: center; }
.st-hero__h1 {
  margin: 30px auto 0; font-size: var(--st-h1); line-height: 1.06;
  letter-spacing: -.035em; font-weight: 300; max-width: 1000px;
}
.st-hero__h1 .accent { font-weight: 500; color: var(--st-gold-text); }
.st-hero__lede {
  margin: 34px auto 0; font-size: 17px; line-height: 1.7;
  color: rgba(25, 25, 24, .75); max-width: 620px;
}
.st-hero__actions {
  display: flex; align-items: center; justify-content: center;
  gap: 24px; margin-top: 42px;
}
.st-hero__trust {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 6px 10px; margin-top: 34px; font-size: 11px; font-weight: 500;
  letter-spacing: .06em; text-transform: uppercase; color: rgba(25, 25, 24, .55);
}
.st-hero__trust .dot {
  width: 3px; height: 3px; border-radius: 50%; background: rgba(25, 25, 24, .4);
}

/* ── Hero exhibit (value map) ────────────────────────────── */
.st-exhibit { padding: 64px var(--st-padx) 0; }
.st-exhibit__panel {
  max-width: 1240px; margin: 0 auto; background: var(--df-bg-white);
  border: 1px solid var(--st-hairline); border-top: 2.5px solid var(--st-gold);
  border-radius: 8px; padding: 32px 40px 26px;
  box-shadow: 0 1px 3px rgba(25, 25, 24, .04), 0 8px 24px rgba(25, 25, 24, .05);
}
.st-exhibit__head {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 12px; flex-wrap: wrap; margin-bottom: 18px;
}
.st-exhibit__title { font-size: 14.5px; font-weight: 600; }
.st-exhibit__title .st-mono-meta { font-size: 11px; letter-spacing: .04em; margin-left: 8px; }
.st-exhibit__live {
  font-family: var(--st-mono); font-size: 11px; letter-spacing: .08em;
  color: rgba(25, 25, 24, .6);
}
.st-exhibit__live .live { color: var(--df-green-text); }
.st-exhibit__caption { max-width: 1240px; margin: 14px auto 0; text-align: center; }

/* ── Ledger grid (Status Quo) ────────────────────────────── */
.st-statusquo { padding: 128px var(--st-padx) 0; text-align: center; }
.st-ledger {
  max-width: 1240px; margin: 64px auto 0; text-align: left;
  background: var(--st-hairline); border: 1px solid var(--st-hairline);
  border-radius: 8px; overflow: hidden;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
}
.st-ledger__cell { background: var(--df-bg-white); padding: 32px 28px; }
.st-ledger__num {
  font-family: var(--st-mono); font-size: 32px; letter-spacing: -.02em; line-height: 1;
}
.st-ledger__num small { font-size: 16px; color: rgba(25, 25, 24, .55); font-weight: 400; }
.st-ledger__label {
  font-size: 11px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  margin-top: 16px; color: rgba(25, 25, 24, .85);
}
.st-ledger__desc { margin: 10px 0 0; font-size: 13.5px; line-height: 1.6; color: rgba(25, 25, 24, .65); }

/* ── Modules band ────────────────────────────────────────── */
.st-modules {
  margin-top: 128px; background: var(--df-bg-white);
  border-top: 1px solid var(--st-hairline); border-bottom: 1px solid var(--st-hairline);
  padding: 104px var(--st-padx);
}
.st-modules__grid {
  max-width: 1240px; margin: 72px auto 0;
  display: grid; grid-template-columns: repeat(4, 1fr);
}
.st-module { padding: 0 32px; border-left: 1px solid var(--st-hairline); }
.st-module:first-child { padding-left: 0; border-left: 0; }
.st-module:last-child { padding-right: 0; }
.st-module__idx { font-family: var(--st-mono); font-size: 11px; letter-spacing: .14em; color: rgba(25, 25, 24, .5); }
.st-module__title {
  display: block; font-size: 18px; font-weight: 600; letter-spacing: -.01em;
  margin-top: 18px; color: var(--st-ink);
  transition: color var(--df-duration) var(--df-ease);
}
/* hover: gold title + arrow reveal */
.st-module__title::after {
  content: '→'; display: inline-block; margin-left: 8px;
  color: var(--st-gold-text); opacity: 0; transform: translateX(-4px);
  transition: opacity var(--df-duration) var(--df-ease),
              transform var(--df-duration) var(--df-ease);
}
.st-module:hover .st-module__title,
.st-module__title:hover { color: var(--st-gold-text); }
.st-module:hover .st-module__title::after,
.st-module__title:hover::after { opacity: 1; transform: none; }
.st-module__desc { margin: 12px 0 0; font-size: 14px; line-height: 1.65; color: rgba(25, 25, 24, .65); }
.st-module__meta {
  margin-top: 16px; font-family: var(--st-mono); font-size: 10px;
  letter-spacing: .12em; color: rgba(25, 25, 24, .5);
}

/* ── Derek AI (dark) ─────────────────────────────────────── */
.st-ai { background: var(--st-dark-1); padding: 112px var(--st-padx); color: var(--st-cream); }
.st-ai .st-h2 { color: var(--st-cream); }
.st-ai .st-h2 .accent { color: var(--st-gold); font-weight: 300; }
.st-ai .st-sub { color: rgba(255, 254, 242, .72); max-width: 560px; }
.st-ai__panel {
  max-width: 880px; margin: 60px auto 0; background: var(--st-dark-2);
  border: 1px solid rgba(255, 254, 242, .1); border-radius: 8px; overflow: hidden;
  text-align: left;
}
.st-ai__bar {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 13px 24px; border-bottom: 1px solid var(--st-d-hair);
}
.st-ai__bar-l { display: flex; align-items: baseline; gap: 12px; }
.st-ai__tag { font-family: var(--st-mono); font-size: 10px; letter-spacing: .14em; color: var(--st-gold); }
.st-ai__tag--dim { color: rgba(255, 254, 242, .45); letter-spacing: .1em; }
.st-ai__status { font-family: var(--st-mono); font-size: 10px; letter-spacing: .1em; color: rgba(255, 254, 242, .4); }
.st-ai__status .on { color: var(--df-green); }
.st-ai__body { padding: 26px 28px 24px; }
.st-ai__q { display: flex; justify-content: flex-end; }
.st-ai__q-bubble {
  background: var(--st-dark-3); border-radius: 8px 8px 2px 8px; padding: 12px 18px;
  font-size: 14px; color: var(--st-cream); max-width: 420px;
}
.st-ai__a { display: flex; gap: 14px; margin-top: 24px; }
.st-ai__avatar {
  flex: none; width: 26px; height: 26px; border-radius: 6px; background: var(--st-gold);
  color: var(--st-ink); display: flex; align-items: center; justify-content: center;
  font-size: 12.5px; font-weight: 700;
}
.st-ai__a-body { min-width: 0; max-width: 660px; }
.st-ai__a-text { margin: 2px 0 0; font-size: 14.5px; line-height: 1.75; color: rgba(255, 254, 242, .88); }
.st-ai__a-text strong { font-weight: 600; color: var(--st-cream); }
.st-ai__a-text .m { font-family: var(--st-mono); font-size: 13.5px; color: var(--st-cream); }
.st-ai__a-text sup { color: var(--st-gold); font-size: 11px; line-height: 0; }
.st-ai__statgrid {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  background: var(--st-dark-3); border-radius: 6px; margin-top: 16px;
}
.st-ai__stat { padding: 12px 16px; border-left: 1px solid var(--st-d-hair); }
.st-ai__stat:first-child { border-left: 0; }
.st-ai__stat-k { font-size: 10px; font-weight: 600; letter-spacing: .1em; color: rgba(255, 254, 242, .5); }
.st-ai__stat-v { font-family: var(--st-mono); font-size: 16px; color: var(--st-cream); margin-top: 5px; }
.st-ai__stat-v small { font-size: 10.5px; color: rgba(255, 254, 242, .5); }
.st-ai__sources { display: flex; gap: 8px; margin-top: 14px; align-items: baseline; flex-wrap: wrap; }
.st-ai__src-label { font-family: var(--st-mono); font-size: 10px; letter-spacing: .12em; color: rgba(255, 254, 242, .4); }
.st-ai__src {
  background: var(--st-dark-3); border: 1px solid rgba(255, 185, 35, .25); border-radius: 4px;
  padding: 3px 9px; font-family: var(--st-mono); font-size: 10px; letter-spacing: .06em;
  color: var(--st-gold); cursor: default; transition: border-color var(--df-duration) var(--df-ease);
}
.st-ai__src:hover { border-color: rgba(255, 185, 35, .5); }
.st-ai__suggest { display: flex; gap: 8px; margin-top: 26px; flex-wrap: wrap; }
.st-ai__pill {
  border: 1px solid rgba(255, 254, 242, .2); border-radius: 6px; padding: 7px 14px;
  font-size: 12px; color: rgba(255, 254, 242, .7); cursor: default;
  transition: background var(--df-duration) var(--df-ease);
}
.st-ai__pill:hover { background: var(--st-dark-3); }
.st-ai__input {
  display: flex; align-items: center; gap: 12px; padding: 14px 24px;
  border-top: 1px solid var(--st-d-hair);
}
.st-ai__input-hint { flex: 1; font-size: 13.5px; color: rgba(255, 254, 242, .45); }
.st-ai__send {
  width: 30px; height: 30px; border-radius: 6px; background: var(--st-gold); color: var(--st-ink);
  display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 700;
  cursor: default; transition: background var(--df-duration) var(--df-ease);
}
.st-ai__send:hover { background: var(--st-gold-hover); }
.st-ai__caps {
  max-width: 1100px; margin: 72px auto 0;
  display: grid; grid-template-columns: repeat(3, 1fr); text-align: left;
}
.st-ai__cap { padding: 0 36px; border-left: 1px solid var(--st-d-rule); }
.st-ai__cap:first-child { padding-left: 0; border-left: 0; }
.st-ai__cap:last-child { padding-right: 0; }
.st-ai__cap-title { font-size: 15px; font-weight: 600; color: var(--st-cream); }
.st-ai__cap-desc { margin: 12px 0 0; font-size: 13.5px; line-height: 1.65; color: rgba(255, 254, 242, .65); }

/* ── Both sides ──────────────────────────────────────────── */
.st-sides { padding: 120px var(--st-padx) 0; }
.st-sides__grid {
  max-width: 1240px; margin: 64px auto 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
.st-side { border-radius: 8px; padding: 44px 44px 40px; }
.st-side--gp { background: var(--st-dark-1); }
.st-side--lp { background: var(--df-bg-white); border: 1px solid var(--st-hairline); }
.st-side__chip { font-family: var(--st-mono); font-size: 10px; letter-spacing: .14em; }
.st-side--gp .st-side__chip { color: var(--st-gold); }
.st-side--lp .st-side__chip { color: var(--st-gold-text); }
.st-side__title { font-size: 28px; font-weight: 500; letter-spacing: -.02em; margin-top: 20px; }
.st-side--gp .st-side__title { color: var(--st-cream); }
.st-side__sub { margin: 10px 0 0; font-size: 14px; }
.st-side--gp .st-side__sub { color: rgba(255, 254, 242, .65); }
.st-side--lp .st-side__sub { color: rgba(25, 25, 24, .6); }
.st-side__list { display: grid; gap: 14px; margin-top: 28px; padding-top: 28px; }
.st-side--gp .st-side__list { border-top: 1px solid var(--st-d-rule); }
.st-side--lp .st-side__list { border-top: 1px solid var(--st-hairline); }
.st-side__item { display: flex; gap: 12px; font-size: 14px; line-height: 1.6; }
.st-side--gp .st-side__item { color: rgba(255, 254, 242, .85); }
.st-side--lp .st-side__item { color: rgba(25, 25, 24, .8); }
.st-side__item .dash { flex: none; }
.st-side--gp .dash { color: var(--st-gold); }
.st-side--lp .dash { color: var(--st-gold-text); }
.st-side__link { display: inline-block; margin-top: 32px; font-size: 13.5px; font-weight: 600; }
.st-side--gp .st-side__link { color: var(--st-gold); }
.st-side--gp .st-side__link:hover { color: var(--st-gold-hover); }
.st-side--lp .st-side__link { color: var(--st-gold-text); }
.st-side--lp .st-side__link:hover { color: var(--df-blue-deep); }

/* ── Fund Health Strip (dark) ────────────────────────────── */
.st-health { margin-top: 120px; background: var(--st-dark-1); padding: 88px var(--st-padx); }
.st-health__head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.st-health__h2 { margin: 20px 0 0; font-size: 40px; letter-spacing: -.025em; font-weight: 300; color: var(--st-cream); }
.st-health__meta { font-family: var(--st-mono); font-size: 10.5px; letter-spacing: .12em; color: rgba(255, 254, 242, .45); }
.st-health__panel {
  margin-top: 48px; background: var(--st-dark-2);
  border: 1px solid rgba(255, 254, 242, .1); border-radius: 8px; overflow: hidden;
}
.st-health__bar {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 12px 24px; border-bottom: 1px solid var(--st-d-hair);
  font-family: var(--st-mono); font-size: 10px; letter-spacing: .14em; color: rgba(255, 254, 242, .5);
}
.st-health__bar .r { letter-spacing: .1em; color: rgba(255, 254, 242, .4); }
.st-health__tiles { display: grid; grid-template-columns: repeat(4, 1fr); }
.st-health__tile { padding: 22px 24px; border-left: 1px solid var(--st-d-hair); }
.st-health__tile:first-child { border-left: 0; }
.st-health__tile-k { font-size: 10.5px; font-weight: 500; letter-spacing: .1em; color: rgba(255, 254, 242, .5); }
.st-health__tile-row { display: flex; align-items: baseline; gap: 8px; margin-top: 12px; }
.st-health__tile-v { font-family: var(--st-mono); font-size: 26px; letter-spacing: -.02em; color: var(--st-cream); line-height: 1; }
.st-health__tile-v small { font-size: 13px; color: rgba(255, 254, 242, .55); }
.st-health__delta { font-family: var(--st-mono); font-size: 11px; color: var(--df-green); }
.st-health__spark { display: block; margin-top: 14px; width: 100%; height: 24px; }
.st-health__dots { display: flex; gap: 6px; align-items: center; height: 24px; margin-top: 14px; }
.st-health__dots span { width: 7px; height: 7px; border-radius: 50%; background: rgba(255, 254, 242, .5); }
.st-health__dots--gold span { background: var(--st-gold); }
.st-health__tile-note { font-size: 12px; color: rgba(255, 254, 242, .55); margin-top: 12px; }
.st-health__tile-note--gold { color: var(--st-gold); }
.st-health__foot {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 13px 24px; border-top: 1px solid var(--st-d-hair);
}
.st-health__today { display: flex; align-items: baseline; gap: 12px; min-width: 0; }
.st-health__today .tag { font-family: var(--st-mono); font-size: 10px; letter-spacing: .14em; color: var(--st-gold); }
.st-health__today .txt { font-size: 13px; color: rgba(255, 254, 242, .75); }
.st-health__open { font-size: 12.5px; font-weight: 500; color: rgba(255, 254, 242, .6); white-space: nowrap; }
.st-health__open:hover { color: var(--st-cream); }

/* Built-by statement as a hairline-bounded strip (no longer free-floating) */
.st-builtby {
  margin: 0; padding: 26px var(--st-padx);
  border-top: 1px solid var(--st-hairline); border-bottom: 1px solid var(--st-hairline);
  text-align: center; font-size: 14px; color: rgba(25, 25, 24, .6);
}

/* ── How it works ────────────────────────────────────────── */
.st-steps { padding: 120px var(--st-padx) 0; text-align: center; }
.st-steps__grid {
  max-width: 1240px; margin: 72px auto 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; text-align: left;
}
.st-step { border-top: 1px solid var(--st-rule); padding-top: 24px; }
.st-step__idx { font-family: var(--st-mono); font-size: 13px; color: var(--st-gold-text); }
.st-step__title { font-size: 19px; font-weight: 600; margin-top: 16px; }
.st-step__desc { margin: 12px 0 0; font-size: 14px; line-height: 1.65; color: rgba(25, 25, 24, .65); }

/* ── Integrations ────────────────────────────────────────── */
.st-integrations { padding: 104px var(--st-padx) 0; text-align: center; }
.st-integrations__title { font-size: 15px; font-weight: 600; letter-spacing: -.01em; margin-top: 22px; }
.st-integrations__sub { margin: 12px auto 0; font-size: 13.5px; color: rgba(25, 25, 24, .6); max-width: 480px; }
.st-integrations__row { display: flex; justify-content: center; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.st-chip {
  border: 1px solid var(--st-hairline); background: var(--df-bg-white); border-radius: 6px;
  padding: 10px 20px; font-size: 13px; font-weight: 500; color: rgba(25, 25, 24, .75);
}

/* ── Stats strip ─────────────────────────────────────────── */
.st-stats { max-width: 1240px; margin: 112px auto 0; padding: 0 var(--st-padx); text-align: center; }
.st-stats__grid {
  margin-top: 56px; text-align: left;
  border-top: 1px solid var(--st-rule); border-bottom: 1px solid var(--st-rule);
  display: grid; grid-template-columns: repeat(4, 1fr);
}
.st-stat { padding: 36px 32px 40px; border-left: 1px solid var(--st-rule-soft); }
.st-stat:first-child { padding-left: 0; border-left: 0; }
.st-stat:last-child { padding-right: 0; }
.st-stat__v { font-size: 30px; font-weight: 300; letter-spacing: -.02em; }
.st-stat__v--mono { font-family: var(--st-mono); font-weight: 400; }
.st-stat__k {
  font-size: 11px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: rgba(25, 25, 24, .55); margin-top: 12px;
}

/* ── CTA ─────────────────────────────────────────────────── */
.st-cta { padding: 120px var(--st-padx); }
.st-cta__panel {
  max-width: 1240px; margin: 0 auto; background: var(--st-dark-1);
  border-radius: 8px; padding: 88px 64px; text-align: center;
}
.st-cta__h2 {
  margin: 0; font-size: clamp(27px, 21px + 1.6vw, 44px); line-height: 1.18;
  letter-spacing: -.03em; font-weight: 300; color: var(--st-cream);
}
.st-cta__h2 .accent { color: var(--st-gold); }
.st-cta__sub { margin: 22px auto 0; font-size: 15.5px; line-height: 1.7; color: rgba(255, 254, 242, .72); max-width: 480px; }
.st-cta__btn { margin-top: 40px; padding: 16px 34px; }
.st-cta__note { margin-top: 26px; font-size: 13px; color: rgba(255, 254, 242, .6); }
.st-cta__note a { color: rgba(255, 254, 242, .85); font-weight: 500; }
.st-cta__note a:hover { color: var(--st-gold); }

/* ── Footer ──────────────────────────────────────────────── */
.st-footer { border-top: 1px solid var(--st-hairline); padding: 64px var(--st-padx) 40px; }
.st-footer__grid {
  max-width: 1240px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 48px;
}
.st-footer__logo { display: flex; align-items: center; gap: 10px; }
.st-footer__logo span { font-size: 15px; font-weight: 600; }
.st-footer__tagline { margin: 16px 0 0; font-size: 13px; line-height: 1.6; color: rgba(25, 25, 24, .6); }
.st-footer__copy { margin: 20px 0 0; font-size: 12px; color: rgba(25, 25, 24, .5); }
.st-footer__col-title {
  font-size: 11px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: rgba(25, 25, 24, .55);
}
.st-footer__links { display: grid; gap: 12px; margin-top: 18px; font-size: 13.5px; }
.st-footer__links a { color: rgba(25, 25, 24, .75); }
.st-footer__links a:hover { color: var(--st-ink); }
/* mono disclaimer line at the very bottom of every page */
.st-footer__legal {
  max-width: 1240px; margin: 48px auto 0; padding-top: 24px;
  border-top: 1px solid var(--st-hairline);
  font-family: var(--st-mono); font-size: 10px; letter-spacing: .14em;
  color: rgba(25, 25, 24, .45); text-align: center;
}

/* ============================================================
   Subpages — shared page hero, problem ledger, feature band,
   use-cases matrix, security rows, dark band, ownership grid,
   product switcher
   ============================================================ */
.st-pagehero { padding: 88px var(--st-padx) 0; text-align: center; }
.st-pagehero__h1 {
  margin: 28px auto 0; font-size: clamp(32px, 22.8px + 2.44vw, 58px);
  line-height: 1.1; letter-spacing: -.03em; font-weight: 300; max-width: 900px;
}
.st-pagehero__h1 .accent { font-weight: 500; color: var(--st-gold-text); }
.st-pagehero__lede {
  margin: 28px auto 0; font-size: 16.5px; line-height: 1.7;
  color: rgba(25, 25, 24, .75); max-width: 560px;
}
.st-pagehero__actions {
  display: flex; align-items: center; justify-content: center;
  gap: 24px; margin-top: 38px;
}

/* Problem ledger (product pages) */
.st-prob { padding: 96px var(--st-padx) 0; text-align: center; }
.st-ledger--3 { grid-template-columns: repeat(3, 1fr); margin-top: 56px; }
.st-ledger--3 .st-ledger__cell { padding: 32px 30px; }
.st-ledger__name { font-size: 16.5px; font-weight: 600; letter-spacing: -.01em; margin-top: 14px; }
.st-ledger__idx { font-family: var(--st-mono); font-size: 11px; letter-spacing: .14em; color: rgba(25, 25, 24, .5); }

/* Feature band (F.01–F.06) */
.st-featband {
  margin-top: 112px; background: var(--df-bg-white);
  border-top: 1px solid var(--st-hairline); border-bottom: 1px solid var(--st-hairline);
  padding: 96px var(--st-padx);
}
.st-feat__grid {
  max-width: 1240px; margin: 64px auto 0; text-align: left;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px 56px;
}
.st-feat { border-top: 1px solid var(--st-rule); padding-top: 22px; }
.st-feat__idx { font-family: var(--st-mono); font-size: 11px; letter-spacing: .12em; color: var(--st-gold-text); }
.st-feat__name { font-size: 17px; font-weight: 600; letter-spacing: -.01em; margin-top: 14px; }
.st-feat__text { margin: 10px 0 0; font-size: 13.5px; line-height: 1.65; color: rgba(25, 25, 24, .65); }

.st-steps--sub { padding: 104px var(--st-padx) 0; }
.st-integrations--sub { padding: 96px var(--st-padx) 0; }

/* Use-cases matrix */
.st-uc { padding: 64px var(--st-padx) 0; }
.st-uc__panel {
  max-width: 1240px; margin: 0 auto; background: var(--df-bg-white);
  border: 1px solid var(--st-hairline); border-radius: 8px;
  box-shadow: 0 1px 3px rgba(25, 25, 24, .04), 0 8px 24px rgba(25, 25, 24, .05);
}
.st-uc__headrow {
  display: grid; grid-template-columns: 230px 1fr 1fr 250px; gap: 32px;
  padding: 16px 36px; border-bottom: 2px solid var(--st-hairline);
  font-family: var(--st-mono); font-size: 10px; letter-spacing: .14em;
  color: rgba(25, 25, 24, .55);
}
.st-uc__row {
  display: grid; grid-template-columns: 230px 1fr 1fr 250px; gap: 32px;
  padding: 30px 36px;
}
.st-uc__row + .st-uc__row { border-top: 1px solid var(--st-hairline); }
.st-uc__idx { font-family: var(--st-mono); font-size: 11px; color: rgba(25, 25, 24, .45); }
.st-uc__name { font-size: 16.5px; font-weight: 600; letter-spacing: -.01em; margin-top: 10px; }
.st-uc__cell-label {
  display: none; font-family: var(--st-mono); font-size: 9px; letter-spacing: .14em;
  color: rgba(25, 25, 24, .5);
}
.st-uc__text { margin: 0; font-size: 14px; line-height: 1.65; color: rgba(25, 25, 24, .7); }
.st-uc__result-num { font-family: var(--st-mono); font-size: 24px; letter-spacing: -.02em; line-height: 1; }
.st-uc__result-num small { font-size: 13px; color: rgba(25, 25, 24, .55); }
.st-uc__result-note { margin: 8px 0 0; font-size: 12.5px; line-height: 1.55; color: rgba(25, 25, 24, .6); }
.st-uc__caption { max-width: 1240px; margin: 14px auto 0; text-align: center; }

.st-cta--sub { padding: 112px var(--st-padx); }
.st-cta--sub .st-cta__panel { padding: 80px 64px; }

/* Security page (S.01–S.05) */
.st-sec { padding: 64px var(--st-padx) 0; }
.st-sec__panel {
  max-width: 1040px; margin: 0 auto; background: var(--df-bg-white);
  border: 1px solid var(--st-hairline); border-radius: 8px;
  box-shadow: 0 1px 3px rgba(25, 25, 24, .04), 0 8px 24px rgba(25, 25, 24, .05);
}
.st-sec__panel-head {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  padding: 20px 40px; border-bottom: 2px solid var(--st-hairline);
}
.st-sec__panel-title { font-size: 14.5px; font-weight: 600; }
.st-sec__row {
  display: grid; grid-template-columns: 320px 1fr; gap: 48px; padding: 26px 40px;
}
.st-sec__row + .st-sec__row { border-top: 1px solid var(--st-hairline); }
.st-sec__row-head { display: flex; gap: 16px; align-items: baseline; }
.st-sec__row-idx { font-family: var(--st-mono); font-size: 11px; color: rgba(25, 25, 24, .45); }
.st-sec__row-name { font-size: 16px; font-weight: 600; letter-spacing: -.01em; }
.st-sec__row-text { margin: 0; font-size: 14px; line-height: 1.7; color: rgba(25, 25, 24, .7); }

/* Dark band (security page) */
.st-band {
  margin-top: 112px; background: var(--st-dark-1);
  padding: 88px var(--st-padx); text-align: center;
}
.st-band__h2 {
  margin: 24px 0 0; font-size: clamp(28px, 22px + 1.4vw, 42px); line-height: 1.15;
  letter-spacing: -.03em; font-weight: 300; color: var(--st-cream);
}
.st-band__h2 .accent { color: var(--st-gold); }
.st-band__sub { margin: 22px auto 0; font-size: 15px; line-height: 1.7; color: rgba(255, 254, 242, .72); max-width: 540px; }
.st-band__chips { display: flex; justify-content: center; gap: 10px; margin-top: 40px; flex-wrap: wrap; }
.st-band__chip {
  border: 1px solid rgba(255, 254, 242, .2); border-radius: 4px; padding: 7px 14px;
  font-family: var(--st-mono); font-size: 10px; letter-spacing: .1em;
  color: rgba(255, 254, 242, .75);
}

/* Ownership grid (security page) */
.st-own { padding: 112px var(--st-padx) 0; text-align: center; }
.st-own__grid {
  max-width: 1240px; margin: 56px auto 0; text-align: left;
  background: var(--st-hairline); border: 1px solid var(--st-hairline);
  border-radius: 8px; overflow: hidden;
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
}
.st-own__cell { background: var(--df-bg-white); padding: 34px 36px; }
.st-own__idx { font-family: var(--st-mono); font-size: 11px; letter-spacing: .14em; color: rgba(25, 25, 24, .5); }
.st-own__name { font-size: 17px; font-weight: 600; letter-spacing: -.01em; margin-top: 14px; }
.st-own__text { margin: 10px 0 0; font-size: 14px; line-height: 1.65; color: rgba(25, 25, 24, .65); }

/* Product switcher — 4 numbered interlink cards (product pages) */
.st-switcher { padding: 112px var(--st-padx) 0; }
.st-switcher__head { text-align: center; }
.st-switcher__grid {
  max-width: 1240px; margin: 56px auto 0;
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--df-bg-white); border: 1px solid var(--st-hairline);
  border-radius: 8px; overflow: hidden;
}
.st-switcher__card {
  position: relative; display: block; padding: 28px 28px 30px;
  border-left: 1px solid var(--st-hairline);
  transition: background var(--df-duration) var(--df-ease);
}
.st-switcher__card:first-child { border-left: 0; }
.st-switcher__card:hover { background: var(--df-bg-base); }
.st-switcher__idx {
  font-family: var(--st-mono); font-size: 11px; letter-spacing: .14em;
  color: var(--st-gold-text);
}
.st-switcher__name {
  display: block; margin-top: 14px; font-size: 16px; font-weight: 600;
  letter-spacing: -.01em; color: var(--st-ink);
  transition: color var(--df-duration) var(--df-ease);
}
.st-switcher__card:hover .st-switcher__name { color: var(--st-gold-text); }
.st-switcher__arrow {
  display: inline-block; margin-top: 16px; font-size: 14px;
  color: var(--st-gold-text); opacity: 0; transform: translateX(-4px);
  transition: opacity var(--df-duration) var(--df-ease),
              transform var(--df-duration) var(--df-ease);
}
.st-switcher__card:hover .st-switcher__arrow,
.st-switcher__card:focus-visible .st-switcher__arrow { opacity: 1; transform: none; }
/* current product page card: inert, marked */
.st-switcher__card.is-current { background: var(--df-bg-base); pointer-events: none; }
.st-switcher__card.is-current .st-switcher__name { color: rgba(25, 25, 24, .55); }
.st-switcher__tag {
  display: inline-block; margin-top: 16px;
  font-family: var(--st-mono); font-size: 9px; letter-spacing: .14em;
  color: rgba(25, 25, 24, .45);
}

/* ============================================================
   Legal pages — sticky TOC + 720px body column
   ============================================================ */
.st-legal {
  max-width: 1240px; margin: 0 auto;
  padding: 72px var(--st-padx) 96px;
  display: grid; grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(40px, 2.9px + 6.01vw, 96px); align-items: start;
}
.st-legal__toc { position: sticky; top: calc(var(--st-nav-h) + 32px); }
.st-legal__toc-title {
  font-family: var(--st-mono); font-size: 10px; letter-spacing: .16em;
  color: rgba(25, 25, 24, .45);
}
.st-legal__toc-list { margin-top: 14px; display: grid; }
.st-legal__toc-list a {
  display: flex; gap: 10px; align-items: baseline;
  padding: 9px 0; font-size: 12.5px; line-height: 1.5;
  color: rgba(25, 25, 24, .6); border-bottom: 1px solid var(--st-hairline);
  transition: color var(--df-duration) var(--df-ease);
}
.st-legal__toc-list a:hover { color: var(--st-ink); }
.st-legal__toc-list a.is-active { color: var(--st-ink); font-weight: 600; }
.st-legal__toc-idx {
  flex: none; font-family: var(--st-mono); font-size: 10px;
  letter-spacing: .1em; color: rgba(25, 25, 24, .45);
}
.st-legal__toc-list a.is-active .st-legal__toc-idx { color: var(--st-gold-text); }
.st-legal__body { max-width: 720px; }
.st-legal__header {
  margin-bottom: 48px; padding-bottom: 32px;
  border-bottom: 1px solid var(--st-hairline);
}
.st-legal__title {
  font-size: clamp(30px, 22.9px + 1.88vw, 44px); line-height: 1.1;
  letter-spacing: -.03em; font-weight: 300; color: var(--st-ink);
}
.st-legal__date {
  margin: 16px 0 0;
  font-family: var(--st-mono); font-size: 10.5px; letter-spacing: .12em;
  color: rgba(25, 25, 24, .5); text-transform: uppercase;
}
.st-legal__section { margin-bottom: 40px; }
.st-legal__section h2 {
  font-size: 19px; font-weight: 600; letter-spacing: -.01em;
  color: var(--st-ink); margin-bottom: 16px;
}
.st-legal__section p {
  font-size: 15px; color: rgba(25, 25, 24, .8);
  line-height: 1.7; margin-bottom: 16px;
}
.st-legal__section ul,
.st-legal__section ol { margin-bottom: 16px; padding-left: 24px; }
.st-legal__section li {
  font-size: 15px; color: rgba(25, 25, 24, .8);
  line-height: 1.7; margin-bottom: 8px; list-style-type: disc;
}
.st-legal__section ol li { list-style-type: decimal; }
.st-legal__section a { color: var(--st-gold-text); text-decoration: underline; }
.st-legal__section a:hover { color: var(--df-blue-deep); }

/* ============================================================
   Motion — scroll reveal (.rv container / .rv-item children)
   JS adds .is-in on intersection and sets per-item
   transition-delay (70ms stagger).
   ============================================================ */
.rv .rv-item {
  opacity: 0; transform: translateY(14px);
  transition: opacity 500ms var(--df-ease), transform 500ms var(--df-ease);
}
.rv.is-in .rv-item { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rv .rv-item { opacity: 1; transform: none; transition: none; }
  .st-module__title::after,
  .st-switcher__arrow { transition: none; }
}

/* ============================================================
   Responsive — single structural break at 900px (375 spec below)
   ============================================================ */
@media (max-width: 900px) {
  :root { --st-nav-h: 60px; }

  /* nav → burger + drawer */
  .st-nav__logo svg { width: 24px; height: 24px; }
  .st-nav__brand { font-size: 14.5px; }
  .st-nav__by { font-size: 9.5px; }
  .st-nav__links { display: none; }
  .st-nav__actions { display: flex; align-items: center; gap: 14px; }
  .st-signin { padding: 8px 14px; font-size: 11.5px; }
  .st-nav__burger { display: block; }

  .st-hero { padding-top: 48px; }
  .st-hero__h1 { margin-top: 20px; line-height: 1.12; letter-spacing: -.02em; }
  .st-hero__lede { margin-top: 20px; font-size: 15px; line-height: 1.65; }
  .st-hero__actions { display: grid; justify-content: stretch; gap: 14px; margin-top: 28px; }
  .st-hero__actions .st-btn { width: 100%; padding: 15px 0; }
  .st-hero__trust { margin-top: 26px; font-size: 10px; }

  .st-exhibit { padding: 44px 14px 0; }
  .st-exhibit__panel { padding: 18px 14px 14px; }
  .st-exhibit__head { display: block; margin-bottom: 14px; }
  .st-exhibit__title { font-size: 14px; }
  .st-exhibit__title .st-mono-meta { display: block; margin: 6px 0 0; font-size: 9px; letter-spacing: .1em; }
  .st-exhibit__live { display: none; }
  .st-exhibit__caption { margin-top: 12px; font-size: 9px; }

  .st-statusquo { padding: 80px 20px 0; }
  .st-ledger { margin-top: 36px; grid-template-columns: 1fr; }
  .st-ledger__cell { padding: 22px 20px; }
  .st-ledger__num { font-size: 26px; }
  .st-ledger__num small { font-size: 14px; }
  .st-ledger__label { font-size: 10.5px; margin-top: 12px; }
  .st-ledger__desc { margin-top: 8px; font-size: 13px; }

  .st-modules { margin-top: 80px; padding: 64px 20px; }
  .st-modules__grid { margin-top: 36px; grid-template-columns: 1fr; }
  .st-module { padding: 20px 0; border-left: 0; border-top: 1px solid var(--st-hairline); }
  .st-module:first-child { padding: 20px 0; }
  .st-module:last-child { padding: 20px 0; border-bottom: 1px solid var(--st-hairline); }
  .st-module__title { font-size: 16.5px; margin-top: 12px; }
  .st-module__desc { margin-top: 8px; font-size: 13.5px; }
  .st-module__meta { margin-top: 10px; font-size: 9px; }

  .st-ai { padding: 64px 16px; }
  .st-ai__panel { margin-top: 32px; }
  .st-ai__bar { padding: 10px 14px; }
  .st-ai__bar-l { gap: 8px; }
  .st-ai__tag { font-size: 9px; }
  .st-ai__tag--dim { display: none; }
  .st-ai__status { font-size: 9px; letter-spacing: .08em; }
  .st-ai__body { padding: 18px 14px 16px; }
  .st-ai__q-bubble { padding: 10px 14px; font-size: 13px; line-height: 1.55; max-width: 262px; }
  .st-ai__a { gap: 10px; margin-top: 18px; }
  .st-ai__avatar { width: 22px; height: 22px; border-radius: 5px; font-size: 11px; }
  .st-ai__a-text { font-size: 13.5px; line-height: 1.7; }
  .st-ai__a-text .m { font-size: 12.5px; }
  .st-ai__statgrid { grid-template-columns: 1fr; margin-top: 12px; }
  .st-ai__stat {
    display: flex; justify-content: space-between; align-items: baseline;
    padding: 9px 12px; border-left: 0; border-top: 1px solid var(--st-d-hair);
  }
  .st-ai__stat:first-child { border-top: 0; }
  .st-ai__stat-k { font-size: 9.5px; }
  .st-ai__stat-v { font-size: 13.5px; margin-top: 0; }
  .st-ai__stat-v small { font-size: 9.5px; }
  .st-ai__sources { gap: 6px; margin-top: 12px; }
  .st-ai__src { font-size: 9px; padding: 3px 8px; }
  .st-ai__suggest { gap: 6px; margin-top: 20px; }
  .st-ai__pill { font-size: 11.5px; padding: 7px 12px; }
  .st-ai__input { padding: 11px 14px; }
  .st-ai__input-hint { font-size: 12.5px; }
  .st-ai__caps { margin-top: 32px; grid-template-columns: 1fr; }
  .st-ai__cap { padding: 16px 4px 0; border-left: 0; border-top: 1px solid var(--st-d-rule); }
  .st-ai__cap:first-child { padding: 16px 4px 0; }
  .st-ai__cap-title { font-size: 14px; }
  .st-ai__cap-desc { margin: 8px 0 16px; font-size: 12.5px; }

  .st-sides { padding: 72px 16px 0; }
  .st-sides__grid { margin-top: 32px; grid-template-columns: 1fr; gap: 14px; }
  .st-side { padding: 28px 24px; }
  .st-side__chip { font-size: 9.5px; }
  .st-side__title { font-size: 22px; margin-top: 14px; }
  .st-side__list { gap: 11px; margin-top: 20px; padding-top: 20px; }
  .st-side__item { gap: 10px; font-size: 13px; line-height: 1.55; }
  .st-side__link { margin-top: 22px; font-size: 13px; }

  .st-health { margin-top: 80px; padding: 56px 16px; }
  .st-health__head { display: block; text-align: center; }
  .st-health__h2 { font-size: 28px; margin-top: 16px; }
  .st-health__meta { display: none; }
  .st-health__panel { margin-top: 28px; }
  .st-health__bar { padding: 10px 16px; font-size: 8.5px; letter-spacing: .12em; }
  .st-health__tiles { grid-template-columns: 1fr 1fr; }
  .st-health__tile { padding: 16px 18px; }
  .st-health__tile:nth-child(3) { border-left: 0; }
  .st-health__tile:nth-child(n+3) { border-top: 1px solid var(--st-d-hair); }
  .st-health__tile-v { font-size: 21px; }
  .st-health__tile-v small { font-size: 11px; }
  .st-health__delta { font-size: 9.5px; }
  .st-health__spark { height: 20px; margin-top: 10px; }
  .st-health__dots { gap: 5px; height: 20px; margin-top: 10px; }
  .st-health__dots span { width: 6px; height: 6px; }
  .st-health__tile-note { font-size: 11px; margin-top: 9px; }
  .st-health__foot { display: block; padding: 12px 16px; }
  .st-health__today { display: block; }
  .st-health__today .txt { display: block; margin-top: 6px; font-size: 12px; line-height: 1.6; }
  .st-health__open { display: inline-block; margin-top: 8px; font-size: 12px; }
  .st-builtby { padding: 20px; font-size: 13px; }

  .st-steps { padding: 72px 20px 0; }
  .st-steps__grid { margin-top: 32px; grid-template-columns: 1fr; gap: 0; }
  .st-step { padding: 18px 0; }
  .st-step:last-child { border-bottom: 1px solid var(--st-rule); }
  .st-step__idx { font-size: 12px; }
  .st-step__title { font-size: 16.5px; margin-top: 10px; }
  .st-step__desc { margin-top: 8px; font-size: 13.5px; }

  .st-integrations { padding: 64px 20px 0; }
  .st-integrations__title { font-size: 14px; margin-top: 16px; }
  .st-integrations__sub { display: none; }
  .st-integrations__row { gap: 8px; margin-top: 20px; }
  .st-chip { padding: 8px 14px; font-size: 12px; }

  .st-stats { margin-top: 64px; padding: 0 20px; }
  .st-stats__grid { margin-top: 32px; grid-template-columns: 1fr 1fr; }
  .st-stat { padding: 20px 16px 22px; }
  .st-stat:nth-child(odd) { padding-left: 0; border-left: 0; }
  .st-stat:nth-child(even) { padding-right: 0; }
  .st-stat:nth-child(n+3) { border-top: 1px solid var(--st-rule-soft); }
  .st-stat__v { font-size: 19px; letter-spacing: -.01em; }
  .st-stat__k { font-size: 9.5px; margin-top: 8px; }

  .st-cta { padding: 72px 16px; }
  .st-cta__panel { padding: 44px 24px; }
  .st-cta__sub { margin-top: 14px; font-size: 13.5px; }
  .st-cta__btn { width: 100%; padding: 15px 0; margin-top: 28px; }
  .st-cta__note { margin-top: 18px; font-size: 12px; }

  .st-footer { padding: 44px 20px 32px; }
  .st-footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .st-footer__grid > div:first-child { grid-column: 1 / -1; }
  .st-footer__tagline { margin-top: 12px; font-size: 12.5px; }
  .st-footer__copy { margin-top: 16px; font-size: 11px; }
  .st-footer__links { gap: 10px; margin-top: 14px; font-size: 12.5px; }
  .st-footer__legal { margin-top: 32px; padding-top: 20px; font-size: 9px; }

  /* subpages */
  .st-pagehero { padding-top: 48px; }
  .st-pagehero__h1 { margin-top: 18px; line-height: 1.15; letter-spacing: -.02em; }
  .st-pagehero__lede { margin-top: 16px; font-size: 14.5px; line-height: 1.65; }
  .st-pagehero__actions { display: grid; justify-content: stretch; gap: 14px; margin-top: 28px; }
  .st-pagehero__actions .st-btn { width: 100%; padding: 15px 0; }

  .st-prob { padding: 64px 20px 0; }
  .st-ledger--3 { margin-top: 36px; grid-template-columns: 1fr; }
  .st-ledger--3 .st-ledger__cell { padding: 22px 20px; }
  .st-ledger__name { font-size: 15.5px; margin-top: 10px; }

  .st-featband { margin-top: 72px; padding: 64px 20px; }
  .st-feat__grid { margin-top: 36px; grid-template-columns: 1fr; gap: 0; }
  .st-feat { padding: 18px 0; }
  .st-feat__name { font-size: 16px; margin-top: 10px; }
  .st-feat__text { font-size: 13px; margin-top: 8px; }

  .st-steps--sub { padding: 72px 20px 0; }
  .st-integrations--sub { padding: 64px 20px 0; }

  .st-uc { padding: 36px 14px 0; }
  .st-uc__headrow { display: none; }
  .st-uc__row { display: block; padding: 24px 20px; }
  .st-uc__row + .st-uc__row { border-top: 1px solid var(--st-hairline); }
  .st-uc__head { display: flex; align-items: baseline; gap: 12px; }
  .st-uc__idx { font-size: 10px; }
  .st-uc__name { margin-top: 0; }
  .st-uc__cell-label { display: block; margin-top: 16px; }
  .st-uc__cell-label + .st-uc__text { margin-top: 7px; font-size: 13px; line-height: 1.6; }
  .st-uc__result {
    display: flex; align-items: baseline; gap: 12px;
    border-top: 1px solid var(--st-hairline); margin-top: 16px; padding-top: 14px;
  }
  .st-uc__result-num { font-size: 20px; }
  .st-uc__result-num small { font-size: 11px; }
  .st-uc__result-note { margin: 0; font-size: 11.5px; line-height: 1.5; }
  .st-uc__caption { margin-top: 12px; font-size: 9px; }

  .st-cta--sub { padding: 64px 16px 72px; }
  .st-cta--sub .st-cta__panel { padding: 44px 24px; }

  .st-sec { padding: 36px 14px 0; }
  .st-sec__panel-head { padding: 16px 20px; }
  .st-sec__row { display: block; padding: 22px 20px; }
  .st-sec__row-head { gap: 12px; }
  .st-sec__row-text { margin-top: 10px; font-size: 13px; line-height: 1.65; }

  .st-band { margin-top: 72px; padding: 56px 16px; }
  .st-band__sub { margin-top: 16px; font-size: 13.5px; }
  .st-band__chips { gap: 8px; margin-top: 28px; }
  .st-band__chip { font-size: 9px; padding: 6px 10px; }

  .st-own { padding: 72px 14px 0; }
  .st-own__grid { margin-top: 32px; grid-template-columns: 1fr; }
  .st-own__cell { padding: 22px 20px; }
  .st-own__name { font-size: 16px; margin-top: 10px; }
  .st-own__text { margin-top: 8px; font-size: 13px; }

  /* product switcher → stacked rows */
  .st-switcher { padding: 72px 20px 0; }
  .st-switcher__grid { margin-top: 32px; grid-template-columns: 1fr; }
  .st-switcher__card { padding: 20px; border-left: 0; border-top: 1px solid var(--st-hairline); }
  .st-switcher__card:first-child { border-top: 0; }
  .st-switcher__name { margin-top: 10px; font-size: 15px; }
  .st-switcher__arrow,
  .st-switcher__tag { margin-top: 10px; }
  .st-switcher__arrow { opacity: 1; transform: none; }

  /* legal → single column, TOC degrades to a chip row on top */
  .st-legal {
    padding: 48px 20px 64px;
    grid-template-columns: 1fr; gap: 36px;
  }
  .st-legal__toc { position: static; }
  .st-legal__toc-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
  .st-legal__toc-list a {
    padding: 7px 12px; border: 1px solid var(--st-hairline); border-radius: 6px;
    background: var(--df-bg-white); font-size: 11.5px;
  }
  .st-legal__toc-idx { font-size: 9px; }
  .st-legal__header { margin-bottom: 36px; padding-bottom: 24px; }
  .st-legal__section p,
  .st-legal__section li { font-size: 14px; }
}