/* =========================================================================
   DEXVANE: homepage design prototype, V3 (polish of V2)
   Direction: precise digital engineering. Graphite + off-white + gray,
   one accent (Vane copper). See docs/DESIGN-DIRECTION.md, DESIGN-V3-CHANGELOG.md
   Sections: 1 Tokens · 2 Base · 3 Layout · 4 Components · 5 Header/menus
             6 Hero system · 7 Page sections · 8 Form · 9 Footer
             10 Motion · 11 Responsive
   ========================================================================= */

/* 1. TOKENS ------------------------------------------------------------- */
:root {
  /* Neutrals (dark default) */
  --color-background: #0C0D0F;
  --color-background-tint: #111215;
  --color-surface: #141518;
  --color-surface-2: #1A1B1F;
  --color-secondary: #1B1C20;
  --color-text: #F3F3F1;              /* 17.5:1 on background */
  --color-muted: #9EA1A8;             /* 7.52:1 */
  --color-subtle: #8B8E95;            /* 5.93:1 */
  --color-border: #24262B;
  --color-border-strong: #6B6F78;     /* 3.63:1 on surface */
  --color-primary: #F3F3F1;
  --color-primary-hover: #D9D9D6;
  --color-on-primary: #0C0D0F;

  /* Accent: Vane copper (one accent, functional use only) */
  --color-accent: #F07A3A;            /* fills: ink text on it 6.99:1 */
  --color-accent-hover: #F48C52;
  --color-on-accent: #0C0D0F;
  --color-accent-text: #F07A3A;       /* text/indicators on dark: 6.99:1 */
  --color-accent-soft: rgba(240, 122, 58, 0.14);

  /* Feedback */
  --color-success: #7FD9A4;
  --color-warning: #E9B45A;
  --color-error: #FF7A6E;

  /* Typography */
  --font: "Onest", "Onest Fallback", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --fs-h1: clamp(2.875rem, 1.5rem + 4.3vw, 5.5rem);
  --fs-h2: clamp(2.375rem, 1.35rem + 3.3vw, 4.5rem);
  --fs-h3: clamp(1.3rem, 1.18rem + 0.45vw, 1.5rem);
  --fs-lead: clamp(1.125rem, 1.05rem + 0.35vw, 1.3125rem);
  --fs-body: 1.125rem;
  --fs-small: 1rem;
  --fs-xs: 0.875rem;
  --fs-nav: 0.9688rem;
  --fs-btn: 1rem;

  /* Spacing */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.5rem;  --space-6: 2rem;   --space-7: 3rem;    --space-8: 4rem;
  --space-9: 6rem;    --space-10: 8rem;
  --section-y: clamp(6rem, 3.5rem + 7vw, 11rem);

  /* Layout */
  --container: 80rem;
  --gutter: clamp(1.25rem, 0.5rem + 2.8vw, 2.75rem);
  --bar-h: 4rem;

  /* Shape */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur-fast: 140ms;
  --dur: 240ms;
  --dur-slow: 700ms;

  --focus: 0 0 0 2px var(--color-background), 0 0 0 4px var(--color-accent);
}

/* Light sections: same components, light tokens */
.section--light, .section--light-tint {
  --color-background: #FFFFFF;
  --color-background-tint: #F5F5F3;
  --color-surface: #FFFFFF;
  --color-surface-2: #F5F5F3;
  --color-secondary: #F2F2F0;
  --color-text: #0C0D0F;              /* 19.4:1 on white */
  --color-muted: #4D5058;             /* 8.06:1 on white, 7.39:1 on tint */
  --color-subtle: #62666E;            /* 5.76:1 on white, 5.28:1 on tint */
  --color-border: #E6E6E3;
  --color-border-strong: #8A8E96;     /* 3.29:1 on white */
  --color-primary: #0C0D0F;
  --color-primary-hover: #2A2C31;
  --color-on-primary: #F3F3F1;
  --color-accent-text: #A6461A;       /* 5.98:1 on white, 5.48:1 on tint */
  --color-accent-soft: rgba(240, 122, 58, 0.12);
  --color-ph: #5A5E66;
  --color-input: #FFFFFF;
  --color-error: #C0362C;
  --color-success: #1F7A47;
  --focus: 0 0 0 2px #FFFFFF, 0 0 0 4px #A6461A;
  color-scheme: light;
  color: var(--color-text);
  background: var(--color-background);
}
.section--light-tint { background: var(--color-background-tint); }

/* 2. BASE --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 6rem; color-scheme: dark; }
body {
  margin: 0; font-family: var(--font); font-size: var(--fs-body); line-height: 1.6;
  color: var(--color-text); background: var(--color-background);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
body.is-locked { overflow: hidden; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.025em; line-height: 1.1; text-wrap: balance; }
h2 { font-size: var(--fs-h2); letter-spacing: -0.038em; line-height: 1.02; }
h3 { font-size: var(--fs-h3); letter-spacing: -0.02em; }
p { margin: 0; text-wrap: pretty; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }
figure { margin: 0; }
a { color: inherit; text-underline-offset: 0.22em; text-decoration-thickness: 1px; }
svg { display: block; }
button { font: inherit; color: inherit; }
[hidden] { display: none !important; }
::selection { background: var(--color-accent); color: var(--color-on-accent); }
:focus-visible { outline: none; box-shadow: var(--focus); border-radius: var(--radius-sm); }

.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: var(--space-4); top: -100px; z-index: 100; background: var(--color-text); color: var(--color-background); padding: var(--space-3) var(--space-4); border-radius: var(--radius-sm); font-weight: 600; text-decoration: none; }
.skip-link:focus { top: var(--space-4); }
.ph { color: var(--color-ph, #C9CBD0); border: 1px dashed var(--color-border-strong); border-radius: 5px; padding: 0 0.35em; font-size: 0.86em; white-space: nowrap; }

/* 3. LAYOUT ------------------------------------------------------------- */
.container { width: 100%; max-width: calc(var(--container) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); position: relative; }
.section--tint { background: var(--color-background-tint); }
.section-head { max-width: 56rem; display: grid; gap: var(--space-5); margin-bottom: clamp(3.5rem, 2rem + 4vw, 6rem); }
.section-head__lead { font-size: var(--fs-lead); color: var(--color-muted); max-width: 34rem; }
.section-head--split { max-width: none; align-items: end; }
.section-head--split > div { display: grid; gap: var(--space-5); }
.section-head--row { max-width: none; display: flex; align-items: end; justify-content: space-between; gap: var(--space-5); flex-wrap: wrap; }
.section-head--row > div { display: grid; gap: var(--space-5); max-width: 50rem; }
.section-link { margin-top: var(--space-8); }

/* 4. COMPONENTS --------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 2.875rem; padding: 0.75rem 1.4rem; border-radius: var(--radius-sm);
  font-size: var(--fs-btn); font-weight: 600; line-height: 1.2; letter-spacing: -0.005em; text-decoration: none; cursor: pointer;
  border: 1px solid transparent;
  transition: background-color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn--accent { background: var(--color-accent); color: var(--color-on-accent); }
.btn--accent:hover { background: var(--color-accent-hover); }
.btn--primary { background: var(--color-primary); color: var(--color-on-primary); }
.btn--primary:hover { background: var(--color-primary-hover); }
.btn--outline { background: transparent; color: var(--color-text); border-color: var(--color-border-strong); }
.btn--outline:hover { border-color: var(--color-text); background: var(--color-secondary); }
.btn--sm { min-height: 2.5rem; padding: 0.5rem 1rem; font-size: 0.9375rem; }
.btn--lg { min-height: 3.75rem; padding: 1rem 2rem; font-size: 1.125rem; }
.btn--block { width: 100%; }

.text-link { display: inline-flex; align-items: center; gap: 0.55rem; min-height: 2.75rem; font-weight: 600; font-size: 1.0625rem; text-decoration: none; color: var(--color-text); }
.text-link::after { content: "→"; color: var(--color-accent-text); transition: transform var(--dur) var(--ease); }
.text-link:hover { text-decoration: underline; text-decoration-color: var(--color-accent-text); text-underline-offset: 0.3em; }
.text-link:hover::after { transform: translateX(4px); }

.urgent-inline { display: inline-flex; align-items: center; gap: 0.45rem; min-height: 2.75rem; color: var(--color-muted); font-size: var(--fs-xs); text-decoration: none; }
.urgent-inline span { color: var(--color-text); font-weight: 600; text-decoration: underline; text-decoration-color: var(--color-accent-text); text-underline-offset: 0.25em; }

.icon-btn { display: inline-grid; place-items: center; width: 2.75rem; height: 2.75rem; border-radius: var(--radius-sm); background: transparent; border: 1px solid var(--color-border-strong); cursor: pointer; }
.icon-btn svg { width: 1.1rem; height: 1.1rem; }
.icon-btn:hover { border-color: var(--color-text); }
.chev { width: 0.75rem; height: 0.75rem; transition: transform var(--dur) var(--ease); }
[aria-expanded="true"] > .chev { transform: rotate(180deg); }

.toast { position: fixed; left: 50%; bottom: 1.25rem; transform: translateX(-50%); z-index: 90; background: var(--color-text); color: var(--color-background); padding: 0.75rem 1rem; border-radius: var(--radius-md); font-size: 0.9375rem; max-width: min(92vw, 34rem); text-align: center; }
.toast code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.9em; }

/* Back to top: accent color like Get a quote (owner decision 2026-10-07); hidden until the page is scrolled (main.js). */
.to-top { position: fixed; right: 1.5rem; bottom: calc(max(1.25rem, env(safe-area-inset-bottom)) + 3.25rem + 0.5rem); z-index: 45; display: grid; place-items: center; width: 3.25rem; height: 3.25rem; border-radius: var(--radius-sm); background: var(--color-accent); color: var(--color-on-accent); border: 1px solid var(--color-accent); cursor: pointer; opacity: 0; visibility: hidden; transform: translateY(0.5rem); transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease); }
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); }
.to-top svg { width: 1.3rem; height: 1.3rem; }
body.is-locked .to-top { opacity: 0; visibility: hidden; }
@media (max-width: 40em) { .to-top { right: 1rem; bottom: calc(max(1rem, env(safe-area-inset-bottom)) + 3rem + 0.5rem); width: 3rem; height: 3rem; } }

/* Telegram quick contact: always visible at the bottom of the column; Back to top appears above it after scrolling.
   Same square as Back to top, dark like the invitation card (owner decision 2026-10-07). Tooltip on hover / keyboard focus only. */
.tg-float { position: fixed; right: 1.5rem; bottom: max(1.25rem, env(safe-area-inset-bottom)); z-index: 45; display: grid; place-items: center; width: 3.25rem; height: 3.25rem; border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-text); border: 1px solid var(--color-border-strong); text-decoration: none; transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.tg-float:hover { border-color: var(--color-text); }
.tg-float svg { width: 1.4rem; height: 1.4rem; }
/* One soft pulse when the chat invitation appears (main.js); off with reduced motion. */
.tg-float.is-pulsing { animation: tg-pulse 1.2s var(--ease) 2; }
@keyframes tg-pulse { 0% { box-shadow: 0 0 0 0 rgb(240 122 58 / 0.55); } 100% { box-shadow: 0 0 0 0.875rem rgb(240 122 58 / 0); } }
@media (prefers-reduced-motion: reduce) { .tg-float.is-pulsing { animation: none; } }
/* Plain accent dot like Get a quote (no number) while the chat invitation is open; never a fake unread count (owner decision 2026-10-07). */
.tg-float.has-dot::before { content: ""; position: absolute; top: -0.3rem; right: -0.3rem; width: 0.75rem; height: 0.75rem; border-radius: 50%; background: var(--color-accent); }
.tg-float::after { content: attr(data-tip); position: absolute; right: calc(100% + 0.5rem); top: 50%; transform: translateY(-50%); white-space: nowrap; padding: 0.4rem 0.65rem; border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-text); border: 1px solid var(--color-border-strong); font-size: var(--fs-xs); line-height: 1.3; opacity: 0; pointer-events: none; transition: opacity var(--dur-fast) var(--ease); }
.tg-float:hover::after, .tg-float:focus-visible::after { opacity: 1; }
body.is-locked .tg-float { opacity: 0; visibility: hidden; }
@media (hover: none) { .tg-float::after { display: none; } }
@media (max-width: 40em) {
  .tg-float { right: 1rem; bottom: max(1rem, env(safe-area-inset-bottom)); width: 3rem; height: 3rem; }
  .tg-float::after { display: none; }
}

/* Telegram chat invitation: small card to the left of the Telegram button, shown until closed or used (main.js). Not a modal. */
.tg-invite { position: fixed; right: calc(1.5rem + 3.25rem + 0.75rem); bottom: max(1.25rem, env(safe-area-inset-bottom)); z-index: 46; width: max-content; max-width: min(19rem, calc(100vw - 7rem)); padding: 1rem 2.75rem 1rem 1rem; border-radius: var(--radius-md); background: var(--color-surface); color: var(--color-text); border: 1px solid var(--color-border-strong); box-shadow: 0 0.75rem 2rem rgb(0 0 0 / 0.35); opacity: 0; transform: translateY(0.5rem); transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease); }
.tg-invite.is-visible { opacity: 1; transform: none; }
.tg-invite[hidden] { display: none; }
.tg-invite__title { margin: 0; font-weight: 600; font-size: var(--fs-small); }
.tg-invite__text { margin: 0.25rem 0 0.75rem; color: var(--color-muted); font-size: var(--fs-small); }
.tg-invite__close { position: absolute; top: 0.375rem; right: 0.375rem; display: grid; place-items: center; width: 2.25rem; height: 2.25rem; border-radius: var(--radius-sm); background: transparent; color: var(--color-muted); border: 0; cursor: pointer; }
.tg-invite__close:hover { color: var(--color-text); }
.tg-invite__close svg { width: 1rem; height: 1rem; }
body.is-locked .tg-invite { opacity: 0; visibility: hidden; }
@media (max-width: 40em) { .tg-invite { right: calc(1rem + 3rem + 0.5rem); bottom: max(1rem, env(safe-area-inset-bottom)); max-width: calc(100vw - 6rem); } }
@media (prefers-reduced-motion: reduce) { .tg-invite { transition: none; transform: none; } }

/* Logo: wordmark */
.logo { display: inline-flex; align-items: center; min-height: 2.75rem; color: var(--color-text); text-decoration: none; }
.logo__word { font-weight: 700; font-size: 1.125rem; letter-spacing: 0.2em; margin-right: -0.2em; line-height: 1; }

/* 5. HEADER & MENUS ----------------------------------------------------- */
.site-header { position: sticky; top: 0; z-index: 50; padding-top: 0.75rem; }
.bar {
  display: flex; align-items: center; gap: var(--space-6); min-height: var(--bar-h); padding: 0 0.6rem 0 1.2rem;
  background: rgba(20, 21, 24, 0.88); border: 1px solid var(--color-border); border-radius: var(--radius-md);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); transition: border-color var(--dur) var(--ease);
}
.site-header.is-scrolled .bar, .site-header.is-open .bar { border-color: #33363D; }
.primary-nav__list { display: flex; align-items: center; gap: 0.15rem; }
.primary-nav__link, .primary-nav__trigger {
  display: inline-flex; align-items: center; gap: 0.35rem; min-height: 2.75rem; padding: 0 0.85rem;
  font-size: var(--fs-nav); font-weight: 500; color: var(--color-muted); text-decoration: none;
  background: none; border: 0; border-radius: var(--radius-sm); cursor: pointer;
  transition: color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}
.primary-nav__link:hover, .primary-nav__trigger:hover, .primary-nav__trigger[aria-expanded="true"] { color: var(--color-text); background: var(--color-secondary); }
.primary-nav__trigger[aria-expanded="true"] .chev { color: var(--color-accent); }
.bar__actions { margin-left: auto; display: flex; align-items: center; gap: var(--space-3); }
.help-link { display: inline-flex; align-items: center; min-height: 2.75rem; padding: 0 0.6rem; font-size: 0.9375rem; font-weight: 500; color: var(--color-muted); text-decoration: underline; text-underline-offset: 0.25em; text-decoration-color: var(--color-border-strong); }
.help-link:hover { color: var(--color-text); text-decoration-color: var(--color-accent); }
.menu-toggle { display: none; width: 2.75rem; height: 2.75rem; place-items: center; border-radius: var(--radius-sm); background: transparent; border: 1px solid var(--color-border-strong); cursor: pointer; }
.menu-toggle__bars { display: grid; gap: 6px; justify-items: end; }
.menu-toggle__bars span { width: 20px; height: 2px; background: currentColor; }
.menu-toggle__bars span:last-child { width: 12px; }

.mega {
  position: absolute; left: var(--gutter); right: var(--gutter); max-width: var(--container); margin: 0.5rem auto 0;
  background: var(--color-surface); border: 1px solid #33363D; border-radius: var(--radius-lg); padding: var(--space-6) var(--space-6) var(--space-3);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.6); animation: drop var(--dur) var(--ease);
}
.mega__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-6); }
.mega__stage { font-size: var(--fs-xs); color: var(--color-accent-text); font-weight: 500; }
.mega__title { font-size: 1.125rem; font-weight: 600; margin: 0.15rem 0 var(--space-3); padding-bottom: var(--space-3); border-bottom: 1px solid var(--color-border); }
.mega__list a { display: flex; align-items: center; min-height: 2.5rem; padding: 0.3rem 0.6rem; margin-inline: -0.6rem; border-radius: var(--radius-sm); color: var(--color-muted); font-size: 0.9688rem; text-decoration: none; }
.mega__list a:hover { color: var(--color-text); background: var(--color-secondary); }
.mega__footer { display: flex; gap: var(--space-6); flex-wrap: wrap; margin-top: var(--space-5); padding-top: var(--space-2); border-top: 1px solid var(--color-border); font-size: 0.9375rem; }
.mega__footer .text-link { font-size: 0.9375rem; }

.mobile-menu { position: fixed; inset: 0; z-index: 80; }
.mobile-menu__overlay { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.6); animation: fade var(--dur) var(--ease); }
.mobile-menu__panel {
  position: absolute; inset: 0 0 0 auto; width: min(100%, 26rem); background: var(--color-background); border-left: 1px solid var(--color-border);
  display: flex; flex-direction: column; overflow-y: auto; overscroll-behavior: contain; padding: 0.75rem var(--gutter) var(--space-6);
  animation: slide-in var(--dur) var(--ease);
}
.mobile-menu__top { display: flex; align-items: center; justify-content: space-between; min-height: var(--bar-h); }
.mobile-menu__urgent { display: flex; align-items: center; gap: 0.4rem; min-height: 3rem; padding: 0 1rem; margin: var(--space-3) 0 var(--space-4); border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm); color: var(--color-muted); font-size: 0.9375rem; text-decoration: none; }
.mobile-menu__urgent span { color: var(--color-text); font-weight: 600; text-decoration: underline; text-decoration-color: var(--color-accent); text-underline-offset: 0.25em; }
.m-nav > li { border-bottom: 1px solid var(--color-border); }
.m-nav__toggle, .m-nav__link { display: flex; align-items: center; justify-content: space-between; width: 100%; min-height: 3.5rem; padding: 0; background: none; border: 0; cursor: pointer; text-align: left; text-decoration: none; font-size: 1.375rem; font-weight: 600; letter-spacing: -0.02em; color: var(--color-text); }
.m-nav__toggle .chev, .m-group__toggle .chev { width: 0.85rem; height: 0.85rem; }
.m-nav__panel { padding-bottom: var(--space-3); }
.m-groups > li + li { border-top: 1px solid var(--color-border); }
.m-group__toggle { display: flex; align-items: center; justify-content: space-between; width: 100%; min-height: 3rem; padding: 0; background: none; border: 0; cursor: pointer; text-align: left; font-weight: 500; font-size: 1.0625rem; color: var(--color-text); }
.m-group__list { padding: 0 0 var(--space-2) var(--space-4); border-left: 1px solid var(--color-accent); margin-bottom: var(--space-2); }
.m-group__list a, .m-nav__all { display: flex; align-items: center; min-height: 2.75rem; color: var(--color-muted); text-decoration: none; font-size: 1rem; }
.m-group__list a:hover { color: var(--color-text); }
.m-nav__all { color: var(--color-text); font-weight: 600; }
.mobile-menu__bottom { margin-top: auto; padding-top: var(--space-6); display: grid; gap: var(--space-4); }
.mobile-menu__contact { font-size: var(--fs-xs); color: var(--color-muted); }

/* 6. HERO + SYSTEM VISUAL ----------------------------------------------- */
.hero { padding-block: clamp(3rem, 1.5rem + 4vw, 5.5rem) clamp(4.5rem, 3rem + 5vw, 8rem); overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); gap: clamp(2.5rem, 1rem + 4vw, 5rem); align-items: center; }
.hero__copy { display: grid; justify-items: start; }
.hero__kicker { display: inline-flex; align-items: center; gap: 0.6rem; font-size: 0.9375rem; font-weight: 500; color: var(--color-muted); }
.kicker-dot { width: 0.5rem; height: 0.5rem; border-radius: 2px; background: var(--color-accent); transform: rotate(45deg); }
.hero__title { margin-top: var(--space-5); font-size: var(--fs-h1); line-height: 0.98; letter-spacing: -0.048em; font-weight: 600; max-width: 16ch; }
.hero__title-soft { color: var(--color-subtle); }
.hero__lead { margin-top: var(--space-6); font-size: var(--fs-lead); color: var(--color-muted); max-width: 31rem; }
.hero__actions { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--space-6); }
.hero .urgent-inline { margin-top: var(--space-4); }

.system { width: 100%; max-width: 35rem; justify-self: end; }
.system__frame {
  position: relative; padding: clamp(1.25rem, 1rem + 1vw, 1.75rem) clamp(1rem, 0.75rem + 1vw, 1.5rem);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  background-color: #0F1013;
  background-image: linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 32px 32px; background-position: -1px -1px;
}
.system__spine { position: absolute; left: calc(clamp(1rem, 0.75rem + 1vw, 1.5rem) + 0.3rem); top: 6rem; bottom: 2.6rem; width: 1px; background: var(--color-border-strong); }
.system__pulse { position: absolute; left: -3px; top: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 0 4px var(--color-accent-soft); animation: travel 6s var(--ease) infinite; }
.system__head { display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); padding-bottom: var(--space-4); margin-bottom: var(--space-2); border-bottom: 1px solid var(--color-border); font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.75rem; color: var(--color-subtle); }
.system__path b { color: var(--color-border-strong); font-weight: 400; margin-inline: 0.2em; }
.system__env { display: inline-flex; align-items: center; gap: 0.45rem; padding: 0.2rem 0.6rem; border: 1px solid #2B2D33; border-radius: 99px; color: var(--color-muted); }
.system__env i { width: 0.4rem; height: 0.4rem; border-radius: 50%; background: var(--color-accent); }
.system__row { position: relative; display: grid; grid-template-columns: 5.25rem 1fr; gap: var(--space-4); align-items: center; padding-block: var(--space-4); }
.system__row + .system__row { border-top: 1px dashed var(--color-border); }
.system__stage { position: relative; display: grid; gap: 0.1rem; padding-left: 1.4rem; }
.system__stage::before { content: ""; position: absolute; left: 0; top: 0.4rem; width: 0.65rem; height: 0.65rem; border-radius: 2px; transform: rotate(45deg); background: #0F1013; border: 1.5px solid var(--color-accent); }
.system__stage span { font-weight: 700; font-size: 0.8125rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-text); }
.system__stage small { font-size: 0.8125rem; color: var(--color-subtle); }
.system__nodes { position: relative; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: var(--space-3); }
.system__nodes::before { content: ""; position: absolute; left: calc(-1 * var(--space-4) - 0.1rem); top: 50%; width: var(--space-4); height: 1px; background: var(--color-border-strong); }

.node { position: relative; background: var(--color-surface-2); border: 1px solid #2B2D33; border-radius: var(--radius-md); padding: 0.6rem; display: grid; gap: 0.5rem; transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.node:hover { transform: translateY(-2px); border-color: var(--color-accent); }
.node__label { display: flex; align-items: baseline; gap: 0.45rem; font-size: 0.75rem; font-weight: 700; color: var(--color-text); letter-spacing: 0.12em; text-transform: uppercase; }
.node__label b { font-weight: 500; color: var(--color-subtle); letter-spacing: 0.02em; font-variant-numeric: tabular-nums; }
.node__code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.6875rem; color: var(--color-subtle); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.node__code b { color: var(--color-accent); font-weight: 500; }
.sk { display: block; border-radius: 3px; background: #2C2E35; }
.sk i { display: block; border-radius: 3px; background: #2C2E35; }
.sk.is-accent, .sk i.is-accent { background: var(--color-accent); }

.node__bar { display: flex; align-items: center; gap: 0.4rem; padding: 0.3rem 0.45rem; border-radius: 6px; background: #101114; }
.node__bar::before { content: ""; width: 0.4rem; height: 0.4rem; border-radius: 50%; border: 1px solid var(--color-border-strong); }
.node__url { font-size: 0.6875rem; color: var(--color-subtle); }
.node__page { display: grid; gap: 0.35rem; }
.sk--nav { height: 0.3rem; width: 60%; }
.sk--hero { height: 1.6rem; background: linear-gradient(90deg, #2C2E35 0 55%, transparent 55%), #22242A; }
.sk--cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.3rem; background: none; }
.sk--cols i { height: 0.9rem; }
.node__app { display: grid; grid-template-columns: 1.1rem 1fr; gap: 0.4rem; height: 3.4rem; }
.sk--side { height: 100%; }
.sk--main { display: grid; gap: 0.3rem; align-content: start; background: none; }
.sk--main i { height: 0.5rem; }
.sk--main i:nth-child(1) { width: 70%; }
.sk--main i:nth-child(2) { height: 1.5rem; background: #22242A; }
.sk--main i:nth-child(3) { width: 40%; }
.node__query { font-size: 0.75rem; color: var(--color-muted); padding: 0.35rem 0.6rem; border: 1px solid #2B2D33; border-radius: 99px; background: #101114; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.node__query::before { content: ""; display: inline-block; width: 0.5rem; height: 0.5rem; border: 1.5px solid var(--color-subtle); border-radius: 50%; margin-right: 0.45rem; vertical-align: -0.05rem; }
.node__result { display: grid; gap: 0.3rem; padding: 0.2rem 0.1rem; }
.sk--url { height: 0.3rem; width: 35%; }
.sk--title { height: 0.5rem; width: 75%; }
.sk--text { height: 0.3rem; width: 90%; }
.node__status { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.4rem; }
.node__status li { display: flex; align-items: center; gap: 0.4rem; font-size: 0.75rem; color: var(--color-text); padding: 0.35rem 0.5rem; background: #101114; border-radius: 6px; }
.node__status i { width: 0.45rem; height: 0.45rem; border-radius: 50%; background: var(--color-accent); flex: none; }
.node__status li:last-child i { animation: blink 2.6s var(--ease) infinite; }

/* 7. PAGE SECTIONS ------------------------------------------------------ */
/* Services: Build / Grow / Care as one system */
.stack { position: relative; display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: clamp(1.5rem, 1rem + 2vw, 3rem); }
.stack__line { position: absolute; left: 0; right: 0; top: 0.45rem; height: 1px; background: var(--color-border); }
.stack__line::after { content: ""; position: absolute; inset: 0; background: var(--color-text); transform: scaleX(0); transform-origin: left; transition: transform 1.4s var(--ease); }
.stack:has(.stage.is-visible) .stack__line::after { transform: scaleX(1); }
.stage { position: relative; display: grid; gap: var(--space-6); align-content: start; }
.stage__head { display: grid; gap: var(--space-3); padding-top: var(--space-6); }
.stage__node { position: absolute; top: 0; left: 0; width: 0.9rem; height: 0.9rem; border-radius: 2px; transform: rotate(45deg); background: var(--color-background); border: 1.5px solid var(--color-accent); }
.stage__num { font-size: var(--fs-xs); font-weight: 600; color: var(--color-accent-text); font-variant-numeric: tabular-nums; }
.stage__name { font-size: clamp(3rem, 1.6rem + 4.2vw, 5.5rem); letter-spacing: -0.055em; line-height: 0.92; }
.stage__verb { font-size: clamp(1.125rem, 1.05rem + 0.3vw, 1.3125rem); font-weight: 500; letter-spacing: -0.01em; color: var(--color-text); max-width: 22rem; }
.stage__groups { display: grid; gap: var(--space-7); }
.sgroup__title { font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-muted); padding-bottom: var(--space-3); border-bottom: 1px solid var(--color-border-strong); }
.sgroup__list a {
  position: relative; display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); min-height: 3.5rem;
  padding: 0.85rem 0.25rem 0.85rem 0; border-bottom: 1px solid var(--color-border); text-decoration: none; font-size: clamp(1.125rem, 1.07rem + 0.25vw, 1.3125rem); font-weight: 500; letter-spacing: -0.015em; color: var(--color-text);
  transition: color var(--dur-fast) var(--ease), padding-left var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.sgroup__list a::before { content: ""; position: absolute; left: 0; top: 50%; width: 0.5rem; height: 2px; background: var(--color-accent); transform: scaleX(0); transform-origin: left; transition: transform var(--dur) var(--ease); }
.sgroup__list a:hover::before, .sgroup__list a:focus-visible::before { transform: scaleX(1); }
.sgroup__list a::after { content: "→"; color: var(--color-subtle); transition: transform var(--dur) var(--ease), color var(--dur) var(--ease); }
.sgroup__list a:hover { color: var(--color-accent-text); padding-left: 0.9rem; background: var(--color-surface-2); }
.sgroup__list a:hover::after { color: var(--color-accent-text); transform: translateX(3px); }
.sgroup__note { margin-top: var(--space-4); font-size: var(--fs-xs); color: var(--color-subtle); max-width: 22rem; }

/* Situations: situation → recommended service */
.routes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: clamp(1.5rem, 1rem + 2vw, 3.5rem); }
.route { display: grid; align-content: start; justify-items: start; gap: var(--space-4); padding: var(--space-6) 0 var(--space-7); border-top: 1px solid var(--color-border-strong); }
.route__from { font-size: clamp(1.375rem, 1.15rem + 0.8vw, 1.875rem); font-weight: 500; letter-spacing: -0.03em; line-height: 1.15; }
.route__line { position: relative; display: block; width: 3.5rem; height: 1px; margin-block: var(--space-1); background: var(--color-border-strong); transition: width var(--dur) var(--ease), background-color var(--dur) var(--ease); }
.route__line::before { content: ""; position: absolute; left: 0; top: -3px; width: 7px; height: 7px; border-radius: 50%; background: var(--color-border-strong); }
.route__line::after { content: ""; position: absolute; right: 0; top: -3.5px; width: 7px; height: 7px; border-top: 1.5px solid var(--color-border-strong); border-right: 1.5px solid var(--color-border-strong); transform: rotate(45deg); }
.route:hover .route__line, .route:focus-within .route__line { width: 5rem; background: var(--color-accent); }
.route:hover .route__line::before, .route:focus-within .route__line::before { background: var(--color-accent); }
.route:hover .route__line::after, .route:focus-within .route__line::after { border-color: var(--color-accent); }
.route__to { display: inline-flex; align-items: center; min-height: 2.75rem; font-weight: 600; font-size: clamp(1.0625rem, 1.02rem + 0.2vw, 1.1875rem); color: var(--color-text); text-decoration: underline; text-decoration-color: var(--color-border-strong); text-underline-offset: 0.3em; transition: color var(--dur) var(--ease), text-decoration-color var(--dur) var(--ease); }
.route__to:hover, .route:focus-within .route__to { color: var(--color-accent-text); text-decoration-color: var(--color-accent-text); }
.route--urgent .route__to { padding: 0.55rem 1.1rem; border-radius: 99px; background: var(--color-text); color: var(--color-background); text-decoration: none; }
.route--urgent .route__to:hover, .route--urgent:focus-within .route__to { background: var(--color-accent); color: var(--color-on-accent); }

/* Commitments: check grid (dark) */
.checks { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--color-border); }
.check { display: grid; gap: var(--space-4); align-content: start; padding: var(--space-8) var(--space-7) var(--space-8) 0; border-bottom: 1px solid var(--color-border); }
.check:not(:nth-child(3n + 1)) { padding-left: var(--space-7); border-left: 1px solid var(--color-border); }
.check h3 { text-wrap: wrap; font-size: clamp(1.5rem, 1.25rem + 0.8vw, 2rem); letter-spacing: -0.03em; display: grid; gap: var(--space-5); justify-items: start; }
.check h3::before {
  content: ""; width: 1.5rem; height: 1.5rem; border-radius: 50%;
  border: 1px solid var(--color-accent);
  background: var(--color-accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.3 6.8 11 12 5.4' fill='none' stroke='%23F07A3A' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 0.95rem no-repeat;
}
.check p { color: var(--color-muted); font-size: var(--fs-small); max-width: 21rem; }

/* Process: timeline as a system */
.timeline { position: relative; }
.timeline__phases { display: grid; grid-template-columns: 4fr 1fr; gap: var(--space-4); margin-bottom: var(--space-5); }
.phase { position: relative; font-size: var(--fs-xs); font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-muted); padding-bottom: var(--space-3); border-bottom: 1px solid var(--color-border-strong); }
.phase::before, .phase::after { content: ""; position: absolute; bottom: -4px; width: 1px; height: 8px; background: var(--color-border-strong); }
.phase::before { left: 0; }
.phase::after { right: 0; }
.phase--care { color: var(--color-accent-text); border-bottom-color: var(--color-accent); }
.phase--care::before, .phase--care::after { background: var(--color-accent); }
.timeline__track { position: relative; height: 1px; background: var(--color-border); margin: var(--space-6) 0 0; }
.timeline__fill { position: absolute; inset: 0; background: var(--color-text); transform: scaleX(0); transform-origin: left; transition: transform 1.6s var(--ease); }
.timeline.is-visible .timeline__fill { transform: scaleX(1); }
.timeline__steps { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: var(--space-4); }
.tstep { position: relative; display: grid; grid-template-rows: auto auto 1fr auto; gap: var(--space-3); padding-top: var(--space-6); padding-right: var(--space-4); }
.tstep__dot { position: absolute; top: -0.4rem; left: 0; width: 0.8rem; height: 0.8rem; border-radius: 50%; background: var(--color-background); border: 1.5px solid var(--color-border-strong); transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease); }
.timeline.is-visible .tstep__dot { border-color: var(--color-text); }
.timeline.is-visible .tstep:last-child .tstep__dot { border-color: var(--color-accent); }
.timeline.is-visible .tstep:last-child .tstep__dot { background: var(--color-accent); }
.tstep:nth-child(2) .tstep__dot { transition-delay: 300ms; }
.tstep:nth-child(3) .tstep__dot { transition-delay: 600ms; }
.tstep:nth-child(4) .tstep__dot { transition-delay: 900ms; }
.tstep:nth-child(5) .tstep__dot { transition-delay: 1200ms; }
.tstep__num { font-size: 0.875rem; font-weight: 600; color: var(--color-accent-text); font-variant-numeric: tabular-nums; margin-bottom: calc(-1 * var(--space-2)); }
.tstep h3 { font-size: clamp(1.4rem, 1.2rem + 0.7vw, 1.875rem); letter-spacing: -0.03em; }
.tstep p { color: var(--color-muted); font-size: var(--fs-small); }
.tstep .tstep__out { color: var(--color-text); font-weight: 600; font-size: 0.9375rem; padding-top: var(--space-3); border-top: 1px solid var(--color-border); }

/* After launch (dark) */
.after { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr); gap: clamp(2.5rem, 1rem + 5vw, 6rem); align-items: center; }
.after__copy { display: grid; gap: var(--space-6); justify-items: start; }
.flow { display: grid; width: 100%; }
.flow__item { position: relative; display: grid; grid-template-columns: 10.5rem 1fr; gap: var(--space-4); align-items: baseline; padding: var(--space-4) 0 var(--space-4) 1.75rem; border-bottom: 1px solid var(--color-border); }
.flow__item::before { content: ""; position: absolute; left: 0.3rem; top: 0; bottom: 0; width: 1px; background: var(--color-border-strong); }
.flow__item:first-child::before { top: 50%; }
.flow__item:last-child::before { bottom: 50%; }
.flow__item::after { content: ""; position: absolute; left: 0; top: 50%; width: 0.65rem; height: 0.65rem; border-radius: 2px; transform: translateY(-50%) rotate(45deg); background: var(--color-background-tint); border: 1.5px solid var(--color-accent); }
.flow__name { font-size: clamp(1.375rem, 1.25rem + 0.4vw, 1.625rem); font-weight: 600; letter-spacing: -0.03em; }
.flow__desc { color: var(--color-muted); font-size: var(--fs-small); }
.after__note { font-size: var(--fs-xs); color: var(--color-subtle); margin-top: calc(-1 * var(--space-3)); }

.status { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-5); display: grid; gap: var(--space-4); }
.status__head { display: flex; justify-content: space-between; align-items: baseline; gap: var(--space-4); padding-bottom: var(--space-4); border-bottom: 1px solid var(--color-border); font-weight: 600; font-size: 1.125rem; }
.status__site { font-weight: 400; font-size: var(--fs-xs); color: var(--color-subtle); }
.status__list { display: grid; gap: var(--space-2); }
.status__list li { display: grid; grid-template-columns: 1fr auto auto; gap: var(--space-4); align-items: center; padding: 0.8rem 0.9rem; background: var(--color-background-tint); border: 1px solid var(--color-border); border-radius: var(--radius-sm); }
.status__list span { font-weight: 500; }
.status__list em { font-style: normal; font-size: var(--fs-xs); color: var(--color-muted); }
.status__list i { width: 0.6rem; height: 0.6rem; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 0 4px var(--color-accent-soft); }
.status__list i.live { animation: blink 2.6s var(--ease) infinite; }
.status__cap { font-size: 0.8125rem; color: var(--color-subtle); }

/* Team roles */
.roles { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(1.25rem, 1rem + 1.5vw, 2.5rem); }
.roles::before { content: ""; position: absolute; left: 0; right: 0; top: 0.45rem; height: 1px; background: var(--color-border-strong); }
.role { display: grid; gap: var(--space-3); align-content: start; padding-top: var(--space-7); position: relative; }
.role::before { content: ""; position: absolute; top: 0; left: 0; width: 0.9rem; height: 0.9rem; border-radius: 2px; transform: rotate(45deg); background: var(--color-background); border: 1.5px solid var(--color-accent); }
.role:first-child::before { background: var(--color-accent); }
.role__name { font-size: clamp(1.75rem, 1.4rem + 1.1vw, 2.5rem); font-weight: 600; letter-spacing: -0.03em; line-height: 1.1; }
.role p:not(.role__name) { color: var(--color-muted); font-size: var(--fs-small); }

/* Guides */
.guides { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-5); }
.guide a {
  height: 100%; min-height: 21rem; display: grid; grid-template-rows: auto 1fr auto auto; gap: var(--space-4);
  padding: clamp(1.75rem, 1.3rem + 1.4vw, 2.75rem); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); text-decoration: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.guide a:hover { border-color: var(--color-accent-text); transform: translateY(-3px); }
.guide__topic { font-size: var(--fs-xs); font-weight: 600; color: var(--color-accent-text); }
.guide__title { font-size: clamp(1.5rem, 1.3rem + 0.7vw, 2rem); font-weight: 600; letter-spacing: -0.03em; line-height: 1.18; }
.guide__desc { font-size: var(--fs-small); color: var(--color-muted); }
.guide__more { font-size: 1.0625rem; font-weight: 600; padding-top: var(--space-4); border-top: 1px solid var(--color-border); }
.guide__more::after { content: "→"; margin-left: 0.4rem; color: var(--color-accent-text); display: inline-block; transition: transform var(--dur) var(--ease); }
.guide a:hover .guide__more::after { transform: translateX(4px); }

/* Final CTA */
.cta__band {
  position: relative; padding: clamp(3rem, 1.5rem + 6vw, 8rem) clamp(1.5rem, 0.5rem + 5vw, 6.5rem);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden;
  background-color: var(--color-background-tint);
  background-image: linear-gradient(rgba(12,13,15,0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(12,13,15,0.045) 1px, transparent 1px);
  background-size: 40px 40px; background-position: -1px -1px;
}
.cta__band { display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: clamp(2rem, 1rem + 4vw, 6rem); align-items: end; }
.cta__trail, .cta__pre, .cta__title { grid-column: 1 / -1; }
.cta__sub { grid-column: 1; }
.cta__actions { grid-column: 2; justify-content: flex-end; }
.cta__pre { font-size: 1.125rem; font-weight: 600; color: var(--color-accent-text); }
.cta__trail { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4); margin-bottom: var(--space-7); font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-muted); }
.cta__trail span { display: inline-flex; align-items: center; gap: var(--space-4); }
.cta__trail span + span::before { content: ""; width: clamp(1.5rem, 1rem + 2vw, 3.5rem); height: 1px; background: var(--color-border-strong); }
.cta__trail span:not(:last-child)::after { content: ""; width: 0.45rem; height: 0.45rem; border-radius: 1px; transform: rotate(45deg); border: 1.5px solid var(--color-accent); }
.cta__trail span:last-child { color: var(--color-text); }
.cta__title { margin-top: var(--space-4); font-size: clamp(3rem, 1.2rem + 6vw, 7rem); letter-spacing: -0.055em; line-height: 0.95; max-width: 13ch; }
.cta__sub { margin-top: var(--space-6); font-size: var(--fs-lead); color: var(--color-muted); max-width: 32rem; }
.cta__actions { display: flex; align-items: center; gap: var(--space-5); flex-wrap: wrap; margin-top: var(--space-7); }

/* 8. FORM --------------------------------------------------------------- */
.form { max-width: 52rem; background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: clamp(1.25rem, 0.75rem + 2vw, 2.5rem); display: grid; gap: var(--space-5); }
.form__demo { font-size: var(--fs-xs); color: var(--color-muted); border: 1px dashed var(--color-border-strong); border-radius: var(--radius-sm); padding: 0.35rem 0.6rem; justify-self: start; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.field { display: grid; gap: 0.45rem; align-content: start; }
.field label { font-size: 1rem; font-weight: 500; }
.req { color: var(--color-accent-text); }
.field__opt { color: var(--color-subtle); font-weight: 400; }
.field input[type="text"], .field input[type="email"], .field input[type="url"], .field select, .field textarea {
  width: 100%; min-height: 3.25rem; padding: 0.75rem 0.9rem; font: inherit; font-size: 1.0625rem; color: var(--color-text);
  background: var(--color-input, #0F1013); border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm);
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: var(--color-subtle); }
.field textarea { resize: vertical; min-height: 7rem; }
.field select { appearance: none; -webkit-appearance: none; padding-right: 2.4rem; background: var(--color-input, #0F1013) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 4.5 6 8l3.5-3.5' fill='none' stroke='%23F3F3F1' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") right 0.9rem center / 0.75rem no-repeat; }
.section--light .field select, .section--light-tint .field select { background-color: #FFFFFF; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 4.5 6 8l3.5-3.5' fill='none' stroke='%230C0D0F' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); }
.field select option, .field select optgroup { background: var(--color-surface); color: var(--color-text); }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--color-text); }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { border-color: var(--color-accent-text); box-shadow: 0 0 0 1px var(--color-accent-text); }
.field.is-invalid input, .field.is-invalid select, .field.is-invalid textarea { border-color: var(--color-error); }
.field__hint { font-size: var(--fs-xs); color: var(--color-subtle); }
.field__error { font-size: var(--fs-xs); color: var(--color-error); font-weight: 500; }
.field--check { grid-template-columns: auto 1fr; column-gap: 0.7rem; align-items: start; }
.field--check input { width: 1.25rem; height: 1.25rem; margin: 0.2rem 0 0; accent-color: var(--color-accent-text); }
.field--check label { font-weight: 400; color: var(--color-muted); }
.field--check label a { color: var(--color-text); }
.field--check .field__error { grid-column: 1 / -1; }
.form__foot { display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); flex-wrap: wrap; }
.form__status { display: grid; gap: var(--space-3); justify-items: start; padding: var(--space-5); border: 1px solid var(--color-success); border-radius: var(--radius-md); }
.form__status-title { font-weight: 600; font-size: 1.125rem; color: var(--color-success); }
.form__status p:not(.form__status-title) { color: var(--color-muted); font-size: var(--fs-small); }
.form.is-sent > :not([data-form-success]) { display: none; }

/* 9. FOOTER ------------------------------------------------------------- */
.site-footer { padding-block: var(--space-10) var(--space-6); font-size: 1.0625rem; color: var(--color-muted); border-top: 1px solid var(--color-border); }
.site-footer a { text-decoration: none; color: var(--color-muted); }
.site-footer a:hover { color: var(--color-text); }
.site-footer__brand { display: grid; gap: var(--space-4); padding-bottom: var(--space-8); margin-bottom: var(--space-8); border-bottom: 1px solid var(--color-border); }
.site-footer a.footer-word { font-weight: 700; font-size: clamp(3.25rem, 0.5rem + 11vw, 11rem); letter-spacing: 0.12em; line-height: 0.9; color: var(--color-text); margin-right: -0.12em; justify-self: start; }
.footer-stages { display: flex; flex-wrap: wrap; gap: var(--space-5); font-size: 0.9375rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-text); }
.footer-stages span { display: inline-flex; align-items: center; gap: var(--space-5); }
.footer-stages span + span::before { content: ""; width: 0.45rem; height: 0.45rem; border-radius: 1px; transform: rotate(45deg); background: var(--color-accent); }
.site-footer__tag { font-size: var(--fs-lead); max-width: 30rem; }
.site-footer__nav { display: grid; grid-template-columns: 2.3fr 0.9fr 1fr 1.2fr; gap: var(--space-6); padding-bottom: var(--space-7); }
.fcol__title { font-size: var(--fs-xs); font-weight: 600; color: var(--color-subtle); margin-bottom: var(--space-3); letter-spacing: 0.02em; }
.fcol li a, .fcol__plain li { display: inline-flex; align-items: center; min-height: 2.4rem; }
.site-footer .btn--accent, .site-footer .btn--accent:hover { color: var(--color-on-accent); margin-top: var(--space-4); }
.fcol__split { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.fgrps { display: grid; gap: var(--space-3); align-content: start; }
.fgrp { display: grid; }
.site-footer .fgroup { display: inline-flex; align-items: center; min-height: 2.4rem; color: var(--color-text); font-weight: 600; }
.site-footer__bottom { display: flex; justify-content: space-between; gap: var(--space-4); padding-top: var(--space-5); border-top: 1px solid var(--color-border); flex-wrap: wrap; align-items: center; font-size: 0.9375rem; }
.legal { display: flex; gap: var(--space-5); flex-wrap: wrap; }
.legal a { display: inline-flex; align-items: center; min-height: 2.4rem; }

/* 10. MOTION ------------------------------------------------------------ */
.js .reveal { opacity: 0; transform: translateY(12px); transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }
@keyframes drop { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes slide-in { from { transform: translateX(100%); } to { transform: none; } }
@keyframes travel { 0% { top: 0; opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } 100% { top: 100%; opacity: 0; } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; transition-delay: 0ms !important; }
  .js .reveal { opacity: 1; transform: none; }
  .system__pulse { display: none; }
  .stack__line::after, .timeline__fill { transform: scaleX(1); }
}

/* 11. RESPONSIVE -------------------------------------------------------- */
@media (min-width: 64.0625em) {
  .section-head--split { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: var(--space-8); }
}

/* ≤ 1024px */
@media (max-width: 64em) {
  .primary-nav, .help-link { display: none; }
  .menu-toggle { display: inline-grid; }
  .mega { display: none !important; }
  .bar { gap: var(--space-4); }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__title { max-width: 16ch; }
  .system { justify-self: start; max-width: 40rem; }
  .stack { grid-template-columns: 1fr 1fr; row-gap: var(--space-8); }
  .stack .stage:first-of-type { grid-column: 1 / -1; }
  .stack .stage:first-of-type .stage__groups { grid-template-columns: 1fr 1fr; }
  .stack__line { display: none; }
  .stage { padding-top: var(--space-2); border-top: 1px solid var(--color-border-strong); }
  .routes { grid-template-columns: 1fr 1fr; }
  .stage__node { top: -0.5rem; }
  .timeline__steps { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: var(--space-7); }
  .timeline__track, .timeline__phases { display: none; }
  .tstep { padding-top: var(--space-5); border-top: 1px solid var(--color-border-strong); }
  .tstep__dot { top: -0.45rem; border-color: var(--color-accent); }
  .after { grid-template-columns: 1fr; }
  .cta__band { grid-template-columns: 1fr; }
  .cta__sub, .cta__actions { grid-column: 1 / -1; justify-content: flex-start; }
  .roles { grid-template-columns: 1fr 1fr; row-gap: var(--space-7); }
  .roles::before { display: none; }
  .role { border-top: 1px solid var(--color-border-strong); padding-top: var(--space-6); }
  .role::before { top: -0.5rem; }
  .site-footer__nav { grid-template-columns: 1fr 1fr; }
  .fcol--wide { grid-column: 1 / -1; }
}

/* ≤ 860px */
@media (max-width: 53.75em) {
  .checks { grid-template-columns: 1fr 1fr; }
  .check, .check:not(:nth-child(3n + 1)) { padding: var(--space-6) var(--space-5) var(--space-6) 0; border-left: 0; }
  .check:nth-child(2n) { padding-left: var(--space-5); border-left: 1px solid var(--color-border); }
  .guides { grid-template-columns: 1fr 1fr; }
  .guides .guide:last-child { grid-column: 1 / -1; }
  .guide a { min-height: 0; }
}

/* ≤ 640px (phones) */
@media (max-width: 40em) {
  :root { --bar-h: 3.5rem; --fs-body: 1.0625rem; }
  .site-header { padding-top: 0.5rem; }
  .bar { padding: 0 0.4rem 0 0.9rem; gap: var(--space-2); }
  .bar__actions { gap: var(--space-2); }
  .logo__word { font-size: 1.02rem; letter-spacing: 0.17em; }
  .hero { padding-top: var(--space-7); }
  .hero__title { line-height: 1.02; }
  .hero__actions { width: 100%; }
  .hero__actions .btn { flex: 1 1 100%; }
  .system__frame { padding: var(--space-4) var(--space-3); }
  .system__spine { display: none; }
  .system__row { grid-template-columns: 1fr; gap: var(--space-3); }
  .system__stage { display: flex; align-items: baseline; gap: 0.6rem; }
  .system__nodes::before { display: none; }
  .node__status li { padding: 0.35rem 0.4rem; font-size: 0.75rem; }
  .stack { grid-template-columns: 1fr; gap: var(--space-8); }
  .stack .stage:first-of-type .stage__groups { grid-template-columns: 1fr; }
  .checks { grid-template-columns: 1fr; }
  .check, .check:nth-child(2n), .check:not(:nth-child(3n + 1)) { padding: var(--space-5) 0; border-left: 0; }
  .timeline__steps { grid-template-columns: 1fr; row-gap: 0; }
  .tstep { border-top: 0; border-left: 1px solid var(--color-border-strong); padding: 0 0 var(--space-6) var(--space-5); }
  .tstep:last-child { padding-bottom: 0; }
  .tstep__dot { top: 0.35rem; left: -0.45rem; }
  .flow__item { grid-template-columns: 1fr; gap: 0.15rem; }
  .roles { grid-template-columns: 1fr; row-gap: var(--space-6); }
  .routes { grid-template-columns: 1fr; }
  .route { padding: var(--space-5) 0 var(--space-6); gap: var(--space-3); }
  .system__head { font-size: 0.6875rem; }
  .check h3 { grid-template-columns: auto 1fr; align-items: center; gap: var(--space-3); }
  .guides { grid-template-columns: 1fr; }
  .cta__actions { flex-direction: column; align-items: stretch; }
  .cta__trail { gap: var(--space-2); letter-spacing: 0.1em; font-size: 0.75rem; }
  .cta__trail span { gap: var(--space-2); }
  .cta__trail span + span::before { width: 1rem; }
  .cta__actions .btn { width: 100%; }
  .form__row { grid-template-columns: 1fr; }
  .form__foot { flex-direction: column; align-items: stretch; }
  .form__foot .btn { width: 100%; }
  .site-footer__nav { grid-template-columns: 1fr; }
  .fcol__split { grid-template-columns: 1fr; gap: var(--space-3); }
  .footer-stages { gap: var(--space-3); font-size: 0.8125rem; }
  .footer-stages span { gap: var(--space-3); }
  .site-footer__bottom { flex-direction: column; align-items: flex-start; }
}

/* ≤ 380px */
@media (max-width: 23.75em) {
  .bar__cta { padding: 0.45rem 0.75rem; font-size: 0.875rem; }
  .logo__word { font-size: 0.95rem; letter-spacing: 0.14em; }
  .node__status { grid-template-columns: 1fr; }
}

/* Public email addresses with roles (/contact/, /about/). */
.contact-emails { display: grid; gap: var(--space-4); }
.contact-emails li { display: grid; gap: 0.15rem; }
.contact-emails__label { font-size: var(--fs-xs); color: var(--color-muted); }
.contact-emails a { font-weight: 600; color: var(--color-text); text-decoration: underline; text-decoration-color: var(--color-border-strong); text-underline-offset: 0.25em; overflow-wrap: anywhere; }
.contact-emails a:hover { color: var(--color-accent-text); text-decoration-color: var(--color-accent-text); }
.mobile-menu__contact a { color: inherit; text-decoration: underline; text-underline-offset: 0.2em; }