/* AI Lab Pro (US) — base design system. LTR, Latin fonts (Noto Serif / Noto Sans / Space Mono via Google Fonts).
   Design v2: near-black ink, violet accent, amber for numbers; heavy sans headlines with one italic serif accent word. Every page links this file first.
   Fonts are loaded by each page's <head> (URL in config/brand.json → fonts.google_css); this file never @imports.
   Living reference: /_styleguide/ */

/* metric-matched fallbacks (no layout shift when the Google fonts swap in; widths measured in Chrome 2026-10-12) */
@font-face{font-family:'NS Fallback';src:local('Arial'),local('ArialMT');size-adjust:102%}
@font-face{font-family:'NS Head Fallback';src:local('Arial Bold'),local('Arial-BoldMT');font-weight:600 900;size-adjust:95.5%}
@font-face{font-family:'NS Head Fallback';src:local('Arial'),local('ArialMT');font-weight:100 599;size-adjust:97%}
@font-face{font-family:'SM Fallback';src:local('Courier New'),local('CourierNewPSMT');size-adjust:102%}

:root{
  /* color: design v2 (2026-10-12). Values = config/brand.json "theme" (build_landing --check verifies).
     Near-black ink + violet accent; amber is reserved for prices and numbers (--num). */
  --ink:#0C0C10; --ink-2:#15151C; --ink-3:#1E1E29; --screen:#09090C; --paper:#F2F0F7;
  --violet:#9583FF; --violet-2:#AE9FFF; --violet-deep:#5B45E6; --amber:#F2B256; --amber-2:#F7C77A;
  /* legacy aliases (portal, quote, admin CSS still say navy/cream) */
  --navy:var(--ink); --navy-2:var(--ink-2); --navy-3:var(--ink-3); --cream:var(--paper);
  --bg:var(--ink); --surface:var(--ink-2); --surface-2:var(--ink-3);
  --fg:var(--paper); --fg-2:rgba(242,240,247,.72); --fg-3:rgba(242,240,247,.60);   /* fg-3 ≥ 6.0:1 on every surface */
  --line:rgba(242,240,247,.12); --line-2:rgba(242,240,247,.26);
  --acc:var(--violet); --acc-2:var(--violet-2); --on-acc:var(--ink); --num:var(--amber);
  --ok:#7FD1A8; --warn:#F7C77A; --err:#F28B7A;
  /* type */
  --serif:'Noto Serif',Georgia,'Times New Roman',serif;
  --sans:'Noto Sans','NS Fallback',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  --sans-head:'Noto Sans','NS Head Fallback',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  --mono:'Space Mono','SM Fallback',ui-monospace,SFMono-Regular,Menlo,monospace;
  /* space + shape */
  --gutter:clamp(16px,5vw,88px); --maxw:1200px; --radius:18px; --radius-sm:12px; --pill:999px;
  --ease:cubic-bezier(.2,.7,.2,1); --focus:0 0 0 3px rgba(149,131,255,.55);
}

*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;overflow-x:hidden;overflow-x:clip;scroll-behavior:smooth;scroll-padding-top:84px}
body{background:var(--bg);color:var(--fg);font-family:var(--sans);font-size:1rem;line-height:1.6;overflow-x:hidden;overflow-x:clip;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration-color:var(--line-2);text-underline-offset:3px}
a:hover{text-decoration-color:var(--acc)}
:focus-visible{outline:none;box-shadow:0 0 0 2px var(--bg),0 0 0 4px var(--violet-2),0 0 0 9px rgba(149,131,255,.22)}
a:not([class]):focus-visible{border-radius:4px}
::selection{background:var(--acc);color:var(--on-acc)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

/* film grain, desktop pointers only (cheap on mobile = none) */
@media (pointer:fine){body::after{content:"";position:fixed;inset:0;z-index:9000;pointer-events:none;opacity:.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .7 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}}

/* ---------- type ---------- */
h1,h2,h3,h4{font-family:var(--sans-head);font-weight:800;line-height:1.08;letter-spacing:-.028em;color:var(--fg);text-wrap:balance}
h1{font-size:clamp(2.1rem,5vw,4rem);font-variation-settings:"wdth" 90}
h2{font-size:clamp(1.7rem,3.6vw,2.9rem);font-variation-settings:"wdth" 90}
h3{font-size:clamp(1.15rem,1.8vw,1.4rem);font-weight:700;letter-spacing:-.018em}
h4{font-size:1.05rem}
p{color:var(--fg-2);max-width:68ch}
p b,p strong,li b,li strong{color:var(--fg);font-weight:600}
.lead{font-size:clamp(1.06rem,1.4vw,1.25rem);font-weight:300;color:var(--fg-2)}
.eyebrow{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--acc)}
.mono{font-family:var(--mono)}
.num{font-variant-numeric:tabular-nums;white-space:nowrap}
.muted{color:var(--fg-3)}
.small{font-size:.875rem}

/* accent word: one italic serif word on a violet brush stroke ("More than a *receptionist*"). Markup: <em class="em">.
   Content writes it as *word* (single asterisks); tools/build_landing.py turns it into this element. */
.em{font-family:var(--serif);font-style:italic;font-weight:600;letter-spacing:-.01em;font-variation-settings:"wdth" 100;padding:0 .08em .06em .02em;margin-right:-.04em;color:inherit;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 14' preserveAspectRatio='none'%3E%3Cpath d='M3 9.5C40 5 90 4.2 197 6.5c-60 .6-120 2.4-160 5.6' fill='none' stroke='%239583FF' stroke-width='5' stroke-linecap='round'/%3E%3C/svg%3E") left calc(100% - .02em)/100% .3em no-repeat;-webkit-box-decoration-break:clone;box-decoration-break:clone}

/* ---------- layout ---------- */
.wrap{width:100%;max-width:calc(var(--maxw) + 2 * var(--gutter));margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(56px,9vh,112px);border-bottom:1px solid var(--line)}
.section__head{display:grid;gap:12px;margin-bottom:clamp(24px,4vh,48px)}
.stack>*+*{margin-top:var(--stack,16px)}
.grid{display:grid;gap:clamp(14px,2vw,24px);grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
/* closing CTA band (class name kept from v1): dark ink, violet glow, square grid */
.section--amber{position:relative;isolation:isolate;overflow:hidden;background:radial-gradient(60% 90% at 50% 110%,rgba(91,69,230,.42),transparent 70%),var(--ink-2);color:var(--fg)}
.section--amber::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background-image:linear-gradient(rgba(242,240,247,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(242,240,247,.05) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(70% 80% at 50% 50%,#000,transparent);mask-image:radial-gradient(70% 80% at 50% 50%,#000,transparent)}

/* ---------- nav + footer ---------- */
.nav{position:sticky;top:0;z-index:900;background:rgba(12,12,16,.92);border-bottom:1px solid var(--line)}
@supports (backdrop-filter:blur(1px)){@media (min-width:761px){.nav{background:rgba(12,12,16,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}}}
.nav__in{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:64px}
.brandmark{font-family:var(--sans);font-weight:800;letter-spacing:-.02em;font-size:1.15rem;display:inline-flex;align-items:center;gap:8px;text-decoration:none;white-space:nowrap}
.brandmark img{width:28px;height:28px;flex:none;filter:drop-shadow(0 0 10px rgba(110,240,255,.25))}
.brandmark small{font-family:var(--mono);font-size:.62rem;letter-spacing:.2em;color:var(--acc);font-weight:400}
.nav__links{display:flex;gap:22px;align-items:center;font-size:.92rem}
.nav__links a{text-decoration:none;color:var(--fg-2)}
.nav__links a:hover,.nav__links a[aria-current]{color:var(--fg)}
@media (max-width:760px){.nav__links a:not(.btn){display:none}}
.footer{padding-block:56px 40px;font-size:.92rem;color:var(--fg-3)}
.footer a{color:var(--fg-2)}
.footer__legal{margin-top:28px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:8px 20px;font-size:.82rem}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:14px 26px;border:1px solid var(--fg);border-radius:var(--pill);background:transparent;color:var(--fg);font:inherit;font-weight:600;font-size:1rem;line-height:1.1;text-decoration:none;cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.btn:hover{background:var(--fg);color:var(--bg)}
.btn--primary{background:var(--acc);border-color:var(--acc);color:var(--on-acc)}
.btn--primary:hover{background:var(--acc-2);border-color:var(--acc-2);color:var(--on-acc)}
.btn--ghost{border-color:var(--line-2)}
.btn--ghost:hover{background:transparent;color:var(--fg);border-color:var(--acc)}
.btn--sm{min-height:40px;padding:10px 18px;font-size:.9rem}
.btn--block{width:100%}
.btn[disabled],.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;pointer-events:none}
@media (max-width:560px){.btn-row .btn{width:100%}}

/* ---------- badges + notices ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border:1px solid var(--line-2);border-radius:var(--pill);font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-2)}
.badge--acc{border-color:var(--acc);color:var(--acc)}
.badge--ok{border-color:var(--ok);color:var(--ok)}
.notice{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border:1px solid var(--line-2);border-left:3px solid var(--acc);border-radius:var(--radius-sm);background:var(--surface);color:var(--fg-2);font-size:.95rem}
.notice--err{border-left-color:var(--err)}
.notice--ok{border-left-color:var(--ok)}

/* ---------- cards ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(18px,2.4vw,28px)}
.card h3{margin-bottom:8px}
.card--link{text-decoration:none;display:block;transition:border-color .2s var(--ease),transform .2s var(--ease)}
.card--link:hover{border-color:var(--acc);transform:translateY(-2px)}

/* ---------- price card ---------- */
.price-card{position:relative;display:flex;flex-direction:column;gap:18px;background:var(--surface);border:1px solid var(--line-2);border-radius:var(--radius);padding:clamp(20px,3vw,34px)}
.price-card--featured{border-color:var(--acc);box-shadow:0 0 0 1px var(--acc),0 24px 60px -30px rgba(149,131,255,.35)}
.price-card__name{font-family:var(--sans);font-size:1.35rem;font-weight:800;letter-spacing:-.02em}
.price-card__amount{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px}
.price-card__amount b{font-family:var(--serif);font-size:clamp(2.2rem,4vw,3rem);line-height:1;color:var(--num);font-weight:700;font-variant-numeric:tabular-nums;font-variation-settings:"wdth" 80}
.price-card__amount span{color:var(--fg-2);font-size:.95rem}
.price-card__list{list-style:none;display:grid;gap:10px;font-size:.95rem;color:var(--fg-2)}
.price-card__list li{position:relative;padding-left:22px}
.price-card__list li::before{content:"";position:absolute;left:2px;top:.62em;width:10px;height:6px;border-left:2px solid var(--acc);border-bottom:2px solid var(--acc);transform:translateY(-50%) rotate(-45deg)}
.price-card__list--no li::before{width:10px;height:0;border-left:0;border-bottom:2px solid var(--fg-3);transform:none}
.price-card__fine{font-size:.85rem;color:var(--fg-3)}

/* ---------- chat (SMS-style demo) ---------- */
.chat{display:flex;flex-direction:column;gap:10px;width:100%;max-width:420px;padding:18px 14px;background:var(--surface);border:1px solid var(--line);border-radius:28px}
.chat__label{align-self:center;font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-3);text-align:center}
.bubble{max-width:82%;padding:10px 14px;border-radius:18px;font-size:.95rem;line-height:1.45;overflow-wrap:anywhere}
.bubble--in{align-self:flex-start;background:var(--surface-2);color:var(--fg);border-bottom-left-radius:6px}
.bubble--out{align-self:flex-end;background:var(--acc);color:var(--on-acc);border-bottom-right-radius:6px}
.bubble--system{align-self:center;max-width:100%;background:transparent;border:1px dashed var(--line-2);color:var(--fg-2);font-size:.85rem;text-align:center}
.bubble--typing{display:inline-flex;gap:5px;padding:14px 16px}
.bubble--typing i{width:7px;height:7px;border-radius:50%;background:var(--fg-3);animation:typing 1.2s infinite var(--ease)}
.bubble--typing i:nth-child(2){animation-delay:.15s}.bubble--typing i:nth-child(3){animation-delay:.3s}
@keyframes typing{0%,60%,100%{opacity:.35;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}
.chat__choices{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}

/* ---------- forms ---------- */
.field{display:grid;gap:8px;margin-bottom:18px}
.field>label,.label{font-size:.88rem;font-weight:600;color:var(--fg)}
.field .hint{font-size:.85rem;color:var(--fg-3)}
.input,.select,.textarea{width:100%;min-height:48px;padding:12px 14px;background:var(--navy-3);border:1px solid var(--line-2);border-radius:var(--radius-sm);color:var(--fg);font:inherit;font-size:1rem;line-height:1.4;transition:border-color .2s var(--ease)}
.textarea{min-height:120px;resize:vertical}
.input::placeholder,.textarea::placeholder{color:var(--fg-3)}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--acc);box-shadow:var(--focus)}
.select{appearance:none;-webkit-appearance:none;padding-right:40px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23F2F0F7' stroke-width='1.6'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.select option{background:var(--navy-2);color:var(--cream)}
.field--error .input,.field--error .select,.field--error .textarea{border-color:var(--err)}
.field .error{font-size:.85rem;color:var(--err)}
.check{display:flex;gap:12px;align-items:flex-start;font-size:.95rem;color:var(--fg-2);cursor:pointer}
.check input{flex:none;width:20px;height:20px;margin-top:2px;accent-color:var(--violet)}
.choices{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr))}
.choice{position:relative;display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border:1px solid var(--line-2);border-radius:var(--radius-sm);background:var(--surface);cursor:pointer;transition:border-color .2s var(--ease)}
.choice input{flex:none;width:18px;height:18px;margin-top:3px;accent-color:var(--violet)}
.choice:hover{border-color:var(--fg-3)}
.choice:has(input:checked){border-color:var(--acc);box-shadow:inset 0 0 0 1px var(--acc)}
.choice b{display:block;color:var(--fg)}
.choice span{font-size:.88rem;color:var(--fg-2)}

/* ---------- stepper (portal status: 6 steps) ---------- */
.stepper{list-style:none;display:grid;grid-template-columns:repeat(var(--steps,6),minmax(0,1fr));gap:8px;counter-reset:step}
.stepper li{counter-increment:step;display:grid;gap:8px;font-size:.82rem;color:var(--fg-3);min-width:0}
.stepper li::before{content:"";height:4px;border-radius:4px;background:var(--line)}
.stepper li span{overflow-wrap:anywhere}
.stepper li span::before{content:counter(step,decimal-leading-zero) " ";font-family:var(--mono);font-size:.7rem;letter-spacing:.08em}
.stepper .is-done{color:var(--fg-2)}
.stepper .is-done::before{background:var(--fg-2)}
.stepper .is-current{color:var(--fg);font-weight:600}
.stepper .is-current::before{background:var(--acc)}
@media (max-width:560px){.stepper{grid-template-columns:1fr;gap:0}.stepper li{grid-template-columns:4px 1fr;gap:12px;padding:8px 0}.stepper li::before{height:auto;min-height:22px}}

/* ---------- table (quote lines) ---------- */
.table-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.table{width:100%;border-collapse:collapse;font-size:.95rem}
.table th{text-align:left;font-family:var(--mono);font-size:.68rem;font-weight:400;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-3);padding:10px 12px;border-bottom:1px solid var(--line-2)}
.table td{padding:14px 12px;border-bottom:1px solid var(--line);color:var(--fg-2);vertical-align:top}
.table td.num,.table th.num{text-align:right}
.table tfoot td{color:var(--fg);font-weight:600;border-bottom:0}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:18px 0;font-family:var(--sans);font-size:clamp(1.02rem,1.5vw,1.2rem);font-weight:600;letter-spacing:-.01em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;font-family:var(--mono);color:var(--acc);font-size:1.2rem;transition:transform .25s var(--ease)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details>div{padding:0 0 20px;color:var(--fg-2)}

/* ---------- utilities ---------- */
/* visually hidden without off-screen positioning (never left:-9999px) */
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0 0 0 0)!important;clip-path:inset(50%)!important;white-space:nowrap!important;border:0!important}
.skip-link{position:absolute;top:8px;left:8px;z-index:9999;transform:translateY(-200%);background:var(--acc);color:var(--on-acc);padding:10px 14px;border-radius:var(--radius-sm);font-weight:600;text-decoration:none}
.skip-link:focus{transform:none}
@media (max-width:560px){.hide-sm{display:none!important}}