/* ─── Ancest AI marketing — shared styles (light) ───────────────────
 * Palette mirrors the product app's design tokens (app/theme.config.css):
 * warm-white canvas, beige surfaces, ink text, amber + purple accents.
 * Zero-dependency. Fonts, icons and KaTeX are self-hosted under vendor/.
 * ------------------------------------------------------------------- */

:root{
  /* backgrounds */
  --canvas:#FDFCFA;        /* page base — lightest */
  --surface:#FBF9F4;       /* warm beige section */
  --surface-alt:#F6F2EA;   /* deeper beige band */
  --elevated:#FFFFFF;      /* cards */
  --nav-bg:rgba(253,252,250,.97);

  /* borders */
  --line:rgba(55,44,44,.14);
  --line-soft:rgba(55,44,44,.08);

  /* text */
  --ink:#372C2C;           /* primary / headings / body */
  --ink-2:#6B635B;         /* secondary */
  --ink-3:#7F756C;         /* tertiary / mono labels */

  /* accents */
  --amber:#D4944F; --amber-deep:#C97529; --amber-tint:rgba(212,148,79,.10);
  --purple:#7C559B; --purple-tint:rgba(124,85,155,.10);

  --serif:'Lora',Georgia,serif;
  --sans:'Inter',system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --maxw:1140px;
  --shadow:0 1px 2px rgba(55,44,44,.05),0 4px 16px rgba(55,44,44,.04);
  --shadow-lg:0 2px 6px rgba(55,44,44,.07),0 14px 40px rgba(55,44,44,.07);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--canvas);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.14;letter-spacing:-.012em;color:var(--ink)}
a{color:inherit;text-decoration:none}
em{font-style:italic;color:var(--amber-deep)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.mono{font-family:var(--mono);font-size:14px;letter-spacing:.04em;color:var(--ink-3)}
.eyebrow{font-family:var(--mono);font-size:18px;letter-spacing:.1em;color:var(--amber-deep);text-transform:uppercase}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:10px;font-size:15px;font-weight:500;font-family:var(--sans);padding:12px 22px;cursor:pointer;border:1px solid transparent;transition:.15s}
.btn-a{background:#b3661f;color:#fff;font-weight:600;letter-spacing:.01em;box-shadow:0 1px 3px rgba(201,117,41,.3)}
.btn-a:hover{background:#9e5519}
.btn-g{background:var(--elevated);color:var(--ink);border-color:var(--line)}
.btn-g:hover{border-color:var(--ink-3);background:#fff}

.pill{display:inline-flex;align-items:center;gap:8px;background:var(--elevated);border:1px solid var(--line);border-radius:999px;padding:9px 18px;font-size:16px;color:var(--ink-2)}
.pill i{color:var(--amber-deep)}

.card{background:var(--elevated);border:1px solid var(--line-soft);border-radius:15px;padding:24px;box-shadow:var(--shadow);transition:.16s}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}

section{position:relative}
.sec-pad{padding:78px 0}
.sec-head{margin-bottom:34px}
.sec-head .eyebrow{display:block;margin-bottom:12px}
.sec-head h2{font-size:clamp(28px,3.6vw,40px)}
.bg-surface{background:var(--surface)}
.bg-alt{background:var(--surface-alt)}
.ico{font-size:24px}

/* nav */
nav{position:sticky;top:0;z-index:50;background:var(--nav-bg);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;padding:14px 28px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:19px;color:var(--ink)}
.brand-mark{width:27px;height:27px;border-radius:8px;background:var(--amber);display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a:not(.btn){color:var(--ink-2);font-size:15px;font-weight:500;padding:8px 15px;border-radius:9px;transition:.15s}
.nav-links a:not(.btn):hover{color:var(--amber-deep);background:var(--amber-tint)}
.nav-links a.active{color:#fff;background:var(--amber-deep);font-weight:600}
.nav-links a.lang{font-family:var(--mono);font-size:14px;color:var(--ink-3);border:1px solid var(--line);background:none}
.nav-links a.lang:hover{color:var(--ink);background:none;border-color:var(--ink-3)}

/* nav dropdown */
.nav-drop{position:relative}
.nav-drop>a{display:inline-flex;align-items:center;gap:6px}
.nav-drop>a .chev{font-size:15px;transition:.18s}
.nav-drop:hover>a .chev,.nav-drop:focus-within>a .chev{transform:rotate(180deg)}
.nav-drop:hover::after{content:"";position:absolute;left:0;right:0;top:100%;height:12px}
.nav-menu{position:absolute;top:calc(100% + 10px);left:0;min-width:300px;background:var(--elevated);border:1px solid var(--line-soft);border-radius:14px;box-shadow:var(--shadow-lg);padding:8px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:.16s;z-index:70}
.nav-drop:hover .nav-menu,.nav-drop:focus-within .nav-menu{opacity:1;visibility:visible;transform:none}
.nav-links .nav-menu a:not(.btn){display:flex;align-items:flex-start;gap:11px;padding:10px 12px;border-radius:10px;color:var(--ink);background:none}
.nav-links .nav-menu a:not(.btn):hover{background:var(--surface);color:var(--ink)}
.nav-menu i{color:var(--amber-deep);font-size:18px;margin-top:2px;flex-shrink:0}
.nav-menu b{display:block;font-size:14.5px;font-weight:600;line-height:1.35}
.nav-menu a>span{display:block;min-width:0}
.nav-menu a>span>span{display:block;font-size:13.5px;color:var(--ink-3);margin-top:2px;font-weight:400;line-height:1.35}
.nav-links .nav-menu a.active{background:var(--amber-tint);color:var(--amber-deep)}
.nav-links .nav-menu a.active b{color:var(--amber-deep)}
.nav-menu .sep{height:1px;background:var(--line-soft);margin:6px 10px}

/* data table */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line-soft);border-radius:15px;background:var(--elevated);box-shadow:var(--shadow)}
.tbl{width:100%;border-collapse:collapse;font-size:15px;min-width:680px}
.tbl th{text-align:left;font-family:var(--mono);font-size:14px;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-3);font-weight:500;padding:15px 18px;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl td{padding:14px 18px;border-bottom:1px solid var(--line-soft);color:var(--ink-2);vertical-align:top}
.tbl tr:last-child td{border-bottom:none}
.tbl td.k{color:var(--ink);font-family:var(--mono);font-size:14px;line-height:1.5}
.tbl td.n{font-family:var(--mono);color:var(--amber-deep);text-align:right;white-space:nowrap}
.tbl tr:hover td{background:var(--surface)}

/* professional work samples */
.professional-samples{margin-top:30px}
.professional-sample{display:flex;flex-direction:column;min-height:260px}
.professional-sample .pw-top{flex-wrap:wrap}
.professional-sample h3{font-size:22px;margin:6px 0 12px}
.professional-sample p{color:var(--ink-2);font-size:16px;line-height:1.7;margin:0 0 24px}
.sample-download{display:inline-flex;align-items:center;gap:8px;margin-top:auto;color:var(--amber-deep);font-size:16px;font-weight:600}
.sample-download i{font-size:19px}

/* hero */
.hero{padding:104px 0 78px;position:relative;overflow:hidden}
.glow{position:absolute;top:-260px;left:50%;transform:translateX(-50%);width:1000px;height:640px;background:radial-gradient(ellipse at center,rgba(212,148,79,.16),transparent 64%);pointer-events:none;z-index:0}
.hero .wrap{position:relative;z-index:1}
.hero h1{font-size:clamp(40px,6.4vw,70px);max-width:840px;margin:22px 0 0}
.hero p.sub{color:var(--ink-2);font-size:clamp(16px,2vw,20px);max-width:640px;margin:26px 0 34px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.stat-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:48px}

/* grids */
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.auto-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));gap:16px}

/* collapsible category */
.cat{border:1px solid var(--line-soft);border-radius:15px;background:var(--elevated);box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden;transition:.16s}
.cat[open]{box-shadow:var(--shadow-lg)}
.cat>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;padding:22px 26px}
.cat>summary::-webkit-details-marker{display:none}
.cat>summary:hover .cat-title{color:var(--amber-deep)}
.cat-title{font-family:var(--serif);font-size:22px;color:var(--ink);display:flex;align-items:center;gap:12px}
.cat-count{font-family:var(--mono);font-size:14px;font-weight:500;color:var(--amber-deep);background:var(--amber-tint);border:1px solid rgba(212,148,79,.3);border-radius:999px;padding:3px 11px}
.cat-desc{color:var(--ink-2);font-size:15px;margin-top:5px}
.cat-chev{margin-left:auto;color:var(--ink-3);font-size:22px;transition:.2s;flex-shrink:0}
.cat[open] .cat-chev{transform:rotate(180deg);color:var(--amber-deep)}
.cat-body{padding:4px 26px 26px}

/* numbered list (gates / steps) */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.step{display:flex;gap:14px;align-items:flex-start}
.step .n{color:var(--amber-deep);font-family:var(--mono);font-size:14px;margin-top:3px}
.step p{color:var(--ink-2);font-size:16px;margin:0}
.step b{color:var(--ink);font-weight:600}

/* RSI: working image -> one-way seal -> verifier image */
.rsi-loop{display:grid;grid-template-columns:minmax(0,1fr) 138px minmax(0,1fr);gap:0;align-items:stretch;margin-top:34px}
.rsi-side{background:var(--elevated);border:1px solid var(--line-soft);border-radius:15px;padding:25px;box-shadow:var(--shadow)}
.rsi-side.agent{border-top:3px solid var(--amber)}
.rsi-side.verifier{border-top:3px solid var(--purple)}
.rsi-side-head{display:flex;align-items:flex-start;gap:12px;margin-bottom:18px}
.rsi-side-head>i{font-size:24px;color:var(--amber-deep);margin-top:2px}
.rsi-side.verifier .rsi-side-head>i{color:var(--purple)}
.rsi-side-head span{display:block;font-family:var(--mono);font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);margin-bottom:4px}
.rsi-side-head h3{font-size:21px}
.rsi-list{display:grid;gap:12px;list-style:none}
.rsi-list li{position:relative;padding-left:19px;color:var(--ink-2);font-size:15.5px}
.rsi-list li::before{content:"";position:absolute;left:0;top:.68em;width:7px;height:7px;border-radius:50%;background:var(--amber)}
.rsi-side.verifier .rsi-list li::before{background:var(--purple)}
.rsi-list b{color:var(--ink);font-weight:600}
.rsi-transfer{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--amber-deep);font-family:var(--mono);font-size:14px;line-height:1.45}
.rsi-transfer::before{content:"";position:absolute;top:0;bottom:0;left:50%;border-left:2px dashed color-mix(in srgb,var(--amber) 65%,transparent)}
.rsi-transfer>*{position:relative;z-index:1;background:var(--surface);padding:5px 10px}
.rsi-transfer i{font-size:24px}
.rsi-transfer b{font-size:14px;letter-spacing:.08em;text-transform:uppercase}
.rsi-transfer span{color:var(--ink-2)}
.rsi-samples{margin-top:30px}
.rsi-sample{display:flex;flex-direction:column;min-height:390px}
.rsi-sample .pw-top{flex-wrap:wrap}
.rsi-sample h3{font-size:22px;margin:8px 0 12px}
.rsi-sample>p{color:var(--ink-2);font-size:16px;line-height:1.68;margin:0 0 18px}
.rsi-sample .role-tags{margin-bottom:22px}
.rsi-sample-actions{display:flex;flex-wrap:wrap;gap:10px 16px;margin-top:auto;padding-top:18px;border-top:1px solid var(--line-soft)}
.rsi-sample-actions a{display:inline-flex;align-items:center;gap:6px;color:var(--amber-deep);font-size:15.5px;font-weight:600}
.rsi-sample-actions i{font-size:17px}
@media(max-width:820px){
  .rsi-loop{grid-template-columns:1fr;gap:0}
  .rsi-transfer{min-height:112px;flex-direction:row;gap:6px}
  .rsi-transfer::before{top:50%;bottom:auto;left:0;right:0;border-left:none;border-top:2px dashed color-mix(in srgb,var(--amber) 65%,transparent)}
  .rsi-transfer i{transform:rotate(90deg)}
}

/* thesis cycle */
.cycle{position:relative;margin-top:36px;padding-bottom:62px}
.cycle-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;position:relative;z-index:1}
.flow-node{display:inline-flex;align-items:center;gap:9px;background:var(--elevated);border:1px solid var(--line-soft);border-radius:11px;padding:11px 17px;font-size:15.5px;font-weight:500;color:var(--ink);box-shadow:var(--shadow)}
.flow-node i{color:var(--amber-deep);font-size:19px}
.flow-node.accent{background:var(--amber-tint);border-color:rgba(212,148,79,.45);color:var(--amber-deep)}
.flow-arr{color:var(--ink-3);font-size:18px}
/* return path: a U that loops the end back to the start */
.cycle-back{position:absolute;left:14px;right:14px;bottom:14px;height:40px;border:2px solid var(--line);border-top:none;border-radius:0 0 18px 18px}
.cycle-arr{position:absolute;left:-11px;top:-13px;font-size:22px;color:var(--amber-deep);background:var(--surface);line-height:1}
.cycle-label{position:absolute;left:50%;bottom:-13px;transform:translateX(-50%);background:var(--surface);padding:0 14px;color:var(--ink-2);font-size:15px;display:flex;align-items:center;gap:8px;white-space:nowrap}
.cycle-label i{color:var(--amber-deep);font-size:17px}
@media(max-width:680px){
  .cycle{padding-bottom:0}
  .cycle-row{flex-direction:column;align-items:flex-start}
  .flow-arr{transform:rotate(90deg)}
  .cycle-back{position:static;border:none;height:auto;margin-top:18px}
  .cycle-arr{display:none}
  .cycle-label{position:static;transform:none;background:none;padding:0}
}

/* ─── authoring pipeline diagram ─── */
.pipe{display:grid;grid-template-columns:1fr 26px 1fr 26px 1fr 26px 1fr;gap:12px 4px;margin-top:38px;align-items:stretch}
.pipe-stage{grid-row:1;background:var(--elevated);border:1px solid var(--line-soft);border-radius:13px;padding:18px 17px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:7px}
.pipe .s1{grid-column:1}.pipe .s2{grid-column:3}.pipe .s3{grid-column:5}.pipe .s4{grid-column:7}
.pipe .a1{grid-column:2}.pipe .a2{grid-column:4}.pipe .a3{grid-column:6}
.pipe-stage>i{font-size:21px;color:var(--amber-deep)}
.pipe-n{font-family:var(--mono);font-size:14px;letter-spacing:.09em;color:var(--ink-3)}
.pipe-stage b{font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.3}
.pipe-stage p{font-size:14.5px;line-height:1.55;color:var(--ink-2);margin:0 0 4px}
.pipe-actor{margin-top:auto;align-self:flex-start;display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:14px;color:var(--amber-deep);background:var(--amber-tint);border:1px solid rgba(212,148,79,.28);border-radius:6px;padding:3px 9px;white-space:nowrap}
.pipe-actor.model{color:var(--purple);background:var(--purple-tint);border-color:rgba(124,85,155,.28)}
.pipe-actor i{font-size:14px}
.pipe-arr{grid-row:1;display:flex;align-items:center;justify-content:center;color:var(--ink-3);font-size:16px}
.pipe-drop{grid-row:2;grid-column:5;justify-self:center;white-space:nowrap;display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:14px;color:var(--amber-deep);background:var(--amber-tint);border:1px dashed rgba(212,148,79,.45);border-radius:999px;padding:6px 14px;margin-top:10px}
.pipe-drop i{font-size:15px}
@media(max-width:900px){
  .pipe{grid-template-columns:1fr}
  .pipe .s1,.pipe .s2,.pipe .s3,.pipe .s4,.pipe .a1,.pipe .a2,.pipe .a3,.pipe .pipe-drop{grid-column:1;grid-row:auto}
  .pipe-arr{transform:rotate(90deg);height:20px}
  .pipe .pipe-drop{justify-self:start;padding-left:6px}
}

/* ─── difficulty pyramid ─── */
.pyr-grid{display:grid;grid-template-columns:minmax(280px,430px) 1fr;gap:52px;align-items:center;margin-top:38px}
.pyr{display:flex;flex-direction:column;gap:5px}
.pyr-band{text-align:center;padding:14px 8px 16px;line-height:1.3}
.pyr-band .l{font-family:var(--mono);font-size:14px;letter-spacing:.08em;display:block;opacity:.9;margin-bottom:3px}
.pyr-band b{font-size:14.5px;font-weight:600}
.pyr-c{clip-path:polygon(33% 0,67% 0,74% 100%,26% 100%);background:var(--amber-deep);color:#fff}
.pyr-b{clip-path:polygon(26% 0,74% 0,87% 100%,13% 100%);background:color-mix(in srgb,var(--amber) 32%,transparent);color:var(--ink)}
.pyr-a{clip-path:polygon(13% 0,87% 0,100% 100%,0 100%);background:var(--amber-tint);color:var(--ink)}
.pyr-cap{margin-top:14px;text-align:center;font-family:var(--mono);font-size:14px;color:var(--ink-3);display:flex;align-items:center;justify-content:center;gap:6px}
.pyr-cap i{font-size:14px;color:var(--amber-deep)}
@media(max-width:820px){.pyr-grid{grid-template-columns:1fr;gap:34px}}

/* prior-work cards */
.subhead{display:flex;align-items:center;gap:14px;margin:6px 0 18px;font-family:var(--mono);font-size:14px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
.subhead::after{content:"";flex:1;height:1px;background:var(--line)}
.ds-gap{margin-top:42px}
.pw{display:flex;flex-direction:column}
.pw-top{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:11px}
.tag{font-size:14px;color:var(--purple);background:var(--purple-tint);border-radius:6px;padding:4px 10px;font-weight:500;white-space:nowrap}
.ven{font-family:var(--mono);font-size:14px;color:var(--ink-3);text-align:right}
.pw h3{font-size:19px}
.bl{color:var(--ink-2);font-size:15px;margin:9px 0 16px;flex:1}
.pw-foot{display:flex;justify-content:space-between;align-items:center}
.met{font-family:var(--mono);font-size:14px;color:var(--amber-deep);display:inline-flex;align-items:center;gap:6px}
.pw .ti-arrow-up-right{color:var(--ink-3);transition:.15s}
.pw:hover .ti-arrow-up-right{color:var(--amber-deep)}
.feat{border-color:rgba(212,148,79,.4)!important}

/* job roles */
.roles{display:flex;flex-direction:column;gap:14px;max-width:900px}
.role{display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;background:var(--elevated);border:1px solid var(--line-soft);border-radius:14px;padding:22px 26px;box-shadow:var(--shadow);transition:.16s}
.role:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.role h3{font-size:19px}
.role-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}
.role-tags span{display:inline-flex;align-items:center;gap:5px;font-family:var(--mono);font-size:14px;color:var(--ink-2);background:var(--surface);border:1px solid var(--line-soft);border-radius:7px;padding:5px 11px}
.role-tags span i{font-size:14px;color:var(--ink-3)}
.role-tags .dept{color:var(--amber-deep);background:var(--amber-tint);border-color:rgba(212,148,79,.3)}
.role-tags .dept i{color:var(--amber-deep)}
.role .apply{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);border-radius:10px;padding:10px 20px;font-size:14.5px;font-weight:500;color:var(--ink);white-space:nowrap;transition:.15s}
.role:hover .apply,.role .apply:hover{border-color:var(--amber);color:var(--amber-deep);background:var(--amber-tint)}

/* demo form */
.form-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start}
.form-aside{position:sticky;top:90px}
.form-aside .quote{border-left:3px solid var(--amber);padding:6px 0 6px 18px;margin-top:26px;color:var(--ink);font-family:var(--serif);font-size:17px;line-height:1.55}
.form-aside .quote cite{display:block;margin-top:12px;font-family:var(--sans);font-style:normal;font-size:14px;color:var(--ink-3)}

/* the form is one elevated card */
.form-main{background:var(--elevated);border:1px solid var(--line-soft);border-radius:18px;box-shadow:var(--shadow-lg);padding:38px 36px}
.fieldset{margin-bottom:28px}
.fieldset:last-of-type{margin-bottom:24px}
.form-sub{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--amber-deep);margin-bottom:16px}
.form-sub .n{width:22px;height:22px;border-radius:50%;background:var(--amber-tint);display:inline-flex;align-items:center;justify-content:center;font-size:12.5px}
.field{margin-bottom:15px}
.field:last-child{margin-bottom:0}
.field label{display:block;font-size:14.5px;font-weight:500;color:var(--ink-2);margin-bottom:6px}
.field label .req{color:var(--amber-deep)}
.field input,.field select,.field textarea{width:100%;font-family:var(--sans);font-size:15px;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px;transition:.15s}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--amber);box-shadow:0 0 0 3px var(--amber-tint)}
.field select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239A9089' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 13px center;padding-right:40px;cursor:pointer}
.field textarea{resize:vertical;min-height:104px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.check{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--ink-2);background:var(--canvas);border:1px solid var(--line);border-radius:10px;padding:11px 13px;cursor:pointer;transition:.15s}
.check:hover{border-color:var(--amber);background:var(--amber-tint)}
.check input{width:16px;height:16px;accent-color:var(--amber-deep);flex-shrink:0}
.form-main .btn-a{width:100%;justify-content:center;padding:14px;font-size:16px;margin-top:4px}
.form-note{font-size:13.5px;color:var(--ink-3);margin-top:14px;text-align:center}
@media(max-width:820px){.form-grid{grid-template-columns:1fr;gap:30px}.form-aside{position:static}.form-main{padding:28px 22px}.checks{grid-template-columns:1fr}}

/* finale */
.finale{padding:100px 0;text-align:center}
.finale h2{font-size:clamp(30px,4vw,48px);max-width:720px;margin:0 auto 14px}

/* footer */
footer{border-top:1px solid var(--line-soft);background:var(--surface)}
.foot-in{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;padding:28px;max-width:var(--maxw);margin:0 auto}
.socials{display:flex;gap:18px;font-size:19px;color:var(--ink-3)}
.socials a:hover{color:var(--ink)}
.foot-links{display:flex;gap:20px;font-size:14px;color:var(--ink-3)}
.foot-links a:hover{color:var(--ink)}

/* mobile hamburger (CSS-only, checkbox hack) */
.nav-toggle{display:none}
.nav-burger{display:none;cursor:pointer;color:var(--ink);font-size:26px;line-height:1;padding:4px;z-index:61}
.nav-burger .i-close{display:none}

@media(max-width:820px){
  .nav-burger{display:inline-flex}
  .nav-toggle:checked~.nav-burger{position:fixed;right:20px;top:15px}
  .nav-toggle:checked~.nav-burger .i-open{display:none}
  .nav-toggle:checked~.nav-burger .i-close{display:inline}
  .nav-links{position:fixed;top:0;right:0;height:100vh;width:min(80vw,300px);background:var(--canvas);border-left:1px solid var(--line);box-shadow:-8px 0 40px rgba(55,44,44,.14);flex-direction:column;align-items:stretch;gap:4px;padding:74px 20px 24px;transform:translateX(100%);transition:transform .22s ease;z-index:60}
  .nav-toggle:checked~.nav-links{transform:translateX(0)}
  .nav-links a:not(.btn){display:block;font-size:17px;padding:13px 14px;border-radius:10px}
  .nav-drop{width:100%}
  .nav-drop>a .chev{display:none}
  .nav-menu{position:static;opacity:1;visibility:visible;transform:none;min-width:0;background:none;border:none;box-shadow:none;padding:2px 0 6px 12px;margin:0}
  .nav-links .nav-menu a:not(.btn){padding:9px 12px;font-size:15px}
  .nav-menu b{font-size:15px}
  .nav-menu a>span>span{display:none}
  .nav-menu .sep{display:none}
  .nav-links a.lang{align-self:flex-start;margin:8px 0 4px}
  .nav-links .btn-a{margin-top:10px;justify-content:center}
  .g3,.g2{grid-template-columns:1fr}
  .hero{padding:72px 0 56px}
  .sec-pad{padding:60px 0}
}


/* ─── dark theme ─────────────────────────────────────────────────── */
html[data-theme="dark"]{
  --canvas:#17130F; --surface:#1E1813; --surface-alt:#241D17; --elevated:#221A15; --nav-bg:rgba(23,19,15,.94);
  --line:rgba(240,230,220,.14); --line-soft:rgba(240,230,220,.075);
  --ink:#F1E9DF; --ink-2:#BEB2A6; --ink-3:#A2988C;
  --amber:#E0A467; --amber-deep:#EBA45F; --amber-tint:rgba(224,164,103,.14);
  --purple:#B089CE; --purple-tint:rgba(176,137,206,.16);
  --shadow:0 1px 2px rgba(0,0,0,.42),0 4px 16px rgba(0,0,0,.32);
  --shadow-lg:0 2px 6px rgba(0,0,0,.5),0 14px 40px rgba(0,0,0,.45);
}
html[data-theme="dark"] .btn-g:hover{background:var(--surface-alt)}
html[data-theme="dark"] .pyr-c{color:#2A1F14}
html[data-theme="dark"] .field input,html[data-theme="dark"] .field select,html[data-theme="dark"] .field textarea{background:var(--elevated);color:var(--ink)}
html[data-theme="dark"] .glow{background:radial-gradient(ellipse at center,rgba(224,164,103,.12),transparent 64%)}
html{transition:none}
body,.card,.pill,.btn,.field input,.field select,.field textarea,section{transition:background-color .18s,border-color .18s,color .18s}

/* theme toggle button */
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:9px;border:1px solid var(--line);background:var(--elevated);color:var(--ink-2);cursor:pointer;transition:.15s;font-size:18px;line-height:1;flex:none}
.theme-toggle:hover{color:var(--ink);border-color:var(--ink-3)}