/* POSLOYNO — дизайн-система (палитра, типографика, компоненты).
   Один смысловой набор классов сохранён (привязка к app.js). */
:root{
  --ink:#14201E; --paper:#EEF0EC; --paper-2:#E6E9E3; --white:#FAFBF8;
  --muted:#4A5854; --faint:#7C8A85; --line:#D5DAD3; --line-soft:#E1E5DE;
  --hot:#FF5A2C; --hot-ink:#C8380F; --hot-wash:#FFEDE6;
  --teal:#0E7C86; --mint:#57C08A; --blue:#0B5A61; --soft:#E9E8E2;
  --dark:#0E1413; --dark-2:#141C1B;
  --radius:10px; --wrap:min(1200px,calc(100vw - 48px));
  --disp:"Bricolage Grotesque","IBM Plex Sans",system-ui,sans-serif;
  --body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.55;letter-spacing:0;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
button,a{touch-action:manipulation}
a{color:inherit;text-decoration:none}
img,canvas{display:block;max-width:100%}
h1,h2,h3,h4{font-family:var(--disp);font-weight:800;letter-spacing:-.02em;text-wrap:balance;margin-top:0}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.wrap{width:var(--wrap);margin-inline:auto}
:focus-visible{outline:2.5px solid var(--hot);outline-offset:2px}
.skip{position:fixed;left:16px;top:-64px;z-index:100;background:#fff;padding:10px 14px;border-radius:8px}.skip:focus{top:16px}

/* ---------- HEADER ---------- */
.topbar{position:fixed;z-index:50;top:0;left:0;width:100%;height:66px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 28px;color:#fff;border-bottom:1px solid rgba(255,255,255,.14);transition:.25s background,.25s color,.25s border}
.topbar.scrolled,.topbar.light{background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(12px);color:var(--ink);border-color:var(--line-soft)}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--disp);font-size:19px;font-weight:800;letter-spacing:.01em}
.brand-mark{width:30px;height:30px;flex:none;color:var(--hot)}
.nav{display:flex;gap:26px;font-size:14.5px;font-weight:500}
.nav a,.account-link{color:inherit;opacity:.82;transition:.2s opacity}
.nav a:hover,.account-link:hover{opacity:1}
.account-link{justify-self:end;font-size:14px;font-weight:600}

/* ---------- HERO ---------- */
.hero{position:relative;height:min(760px,86vh);min-height:600px;background:var(--dark);color:#fff;overflow:hidden}
.hero canvas{position:absolute;inset:0;width:100%;height:100%}
.hero-fallback{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}
.printed-vase{width:26vw;min-width:240px;max-width:440px;height:60vh;max-height:520px;background:repeating-linear-gradient(to bottom,#cfd3cd 0,#cfd3cd 2px,#8b918b 3px,#8b918b 4px);clip-path:polygon(35% 0,65% 0,72% 7%,67% 15%,76% 28%,72% 44%,84% 58%,74% 76%,67% 100%,33% 100%,26% 76%,16% 58%,28% 44%,24% 28%,33% 15%,28% 7%);opacity:.4;filter:drop-shadow(50px 60px 60px rgba(255,90,44,.28));transform:rotate(-8deg) translateX(18vw)}
.hero-shade{position:absolute;inset:0 auto 0 0;width:60%;background:linear-gradient(90deg,rgba(14,20,19,.82),rgba(14,20,19,.2));pointer-events:none}
.hero-copy{position:relative;z-index:3;padding-top:132px}
.eyebrow{margin:0 0 20px;font-family:var(--mono);text-transform:uppercase;font-size:12px;line-height:1.3;font-weight:500;letter-spacing:.16em;color:var(--hot)}
.eyebrow.dark{color:var(--faint)}
.hero h1{font-size:clamp(52px,8vw,116px);line-height:.9;margin:0 0 26px;max-width:11ch;font-weight:800}
.hero-text{font-size:19px;line-height:1.5;max-width:34ch;color:#cfd6d2;margin-bottom:26px}
.hero-actions{display:flex;gap:11px;flex-wrap:wrap}
.hero-meta{display:flex;gap:22px;flex-wrap:wrap;margin-top:32px;color:#aeb8b3;font-size:13px}
.hero-meta span:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--mint);margin-right:9px;vertical-align:1px}
.hero-next{position:absolute;z-index:4;bottom:26px;right:28px;display:flex;gap:14px;font-family:var(--mono);font-size:12px;color:#aab4af}

/* ---------- BUTTONS ---------- */
.btn{min-height:48px;padding:0 20px;border:1px solid transparent;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:600;font-size:15px;cursor:pointer;transition:.16s transform,.18s background,.18s border,.18s opacity}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--hot);color:#fff;box-shadow:0 8px 20px -8px rgba(255,90,44,.6)}
.btn-primary:hover{background:var(--hot-ink)}
.btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.4);color:#fff}
.topbar.scrolled .btn-ghost,.calculator .btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-dark{background:var(--ink);color:#fff}
.wide{width:100%}

/* ---------- CALCULATOR ---------- */
.calculator-band{padding:88px 0 100px;background:var(--paper)}
.calc-head{display:grid;grid-template-columns:1fr .7fr;gap:44px;align-items:end;margin-bottom:40px}
.calc-head h2,.section-lead h2,.b2b h2,.final-cta h2{font-size:clamp(38px,5vw,68px);line-height:.96;margin:0;font-weight:800}
.calc-head>p{max-width:46ch;color:var(--muted);font-size:15.5px;line-height:1.55;margin:10px 0 0}
.calculator{display:grid;grid-template-columns:1.08fr .92fr;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.model-side{padding:26px 34px 34px 0;border-right:1px solid var(--line)}
.quote-side{padding:26px 0 34px 34px}
.dropzone{min-height:126px;border:1.5px dashed #9aa39d;border-radius:12px;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;padding:20px;cursor:pointer;background:var(--white);transition:.2s border,.2s background}
.dropzone:hover,.dropzone.drag{border-color:var(--hot);background:var(--hot-wash)}
.dropzone strong{font-family:var(--disp);font-size:21px;margin:6px 0}
.dropzone>span:last-child{font-family:var(--mono);font-size:12px;color:var(--faint)}
.drop-kicker{font-family:var(--mono);font-size:10.5px;font-weight:500;color:var(--faint);letter-spacing:.12em}
.model-view{height:400px;position:relative;background:radial-gradient(circle at 50% 40%,#dfe2db,#cfd3cc);border-radius:12px;margin-top:14px;overflow:hidden;border:1px solid var(--line)}
.model-view canvas{width:100%;height:100%}
.model-placeholder{position:absolute;inset:0;display:grid;place-items:center;align-content:center;text-align:center;color:#5c645f;gap:6px}
.model-placeholder span{font-family:var(--disp);font-size:70px;line-height:1;font-weight:800;color:#b7bdb4}
.model-placeholder p{max-width:250px;font-size:13px;line-height:1.45}
.model-reset{position:absolute;right:12px;top:12px}
.icon-btn{width:38px;height:38px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;border-radius:9px;cursor:pointer;font-size:20px;color:var(--muted)}
.model-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin:0;border-bottom:1px solid var(--line)}
.model-stats>div{padding:14px 0}
.model-stats>div+div{border-left:1px solid var(--line);padding-left:14px}
.model-stats dt{font-family:var(--mono);font-size:10px;color:var(--faint);text-transform:uppercase;letter-spacing:.08em}
.model-stats dd{margin:6px 0 0;font-family:var(--mono);font-size:14px;font-weight:600;font-variant-numeric:tabular-nums}
.text-link,.ai-link{border:0;background:none;padding:14px 0;color:var(--teal);text-decoration:underline;text-underline-offset:3px;cursor:pointer;font-size:13px;font-weight:600}
.manual-volume{padding:10px 0}
.manual-volume label{font-size:13px}
.manual-volume input{width:150px;margin-left:10px;font-family:var(--mono);border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:#fff}
.quote-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.live-dot{font-family:var(--mono);font-size:11px;color:var(--faint)}
.live-dot:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--mint);margin-right:8px}
fieldset{border:0;padding:0;margin:0 0 22px}
legend{font-size:13px;font-weight:600;margin-bottom:10px}
.material-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}
.material-option{min-width:0;display:flex;flex-direction:column;align-items:flex-start;gap:5px;border:1px solid var(--line);border-radius:9px;padding:11px 9px;cursor:pointer;background:var(--white);transition:.16s border,.16s background}
.material-option input{position:absolute;opacity:0;pointer-events:none}
.material-option:hover{border-color:var(--muted)}
.material-option.active{border-color:var(--hot);background:var(--hot-wash)}
.material-option b{font-size:12.5px}
.material-option small{font-size:9.5px;color:var(--faint);line-height:1.3}
.swatch{display:inline-block;width:15px;height:15px;border-radius:50%;border:1px solid rgba(0,0,0,.15);vertical-align:-2px;margin-right:8px}
.swatch-pla{background:#ff7a4d}.swatch-petg{background:#8fd3dd}.swatch-abs{background:#2e3130}.swatch-tpu{background:#a7e6c4}.swatch-cf{background:#6f7774}
.control-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.segmented{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;border:1px solid var(--line);border-radius:9px;overflow:hidden;background:var(--white)}
.segmented label{cursor:pointer}
.segmented input{position:absolute;opacity:0}
.segmented span{height:42px;display:grid;place-items:center;font-family:var(--mono);font-size:12px;color:var(--muted)}
.segmented input:checked+span{background:var(--hot);color:#fff}
.range-row{margin:0 0 22px}
.range-row>label{display:flex;justify-content:space-between;font-size:13px;font-weight:600;margin-bottom:8px}
.range-row>label b{font-family:var(--mono);color:var(--hot-ink)}
.range-row input{width:100%;accent-color:var(--hot)}
.range-hints{display:flex;justify-content:space-between;color:var(--faint);font-family:var(--mono);font-size:9.5px;margin-top:4px}
.field{display:flex;flex-direction:column;gap:9px;font-size:13px;font-weight:600}
.field select{height:44px;border:1px solid var(--line);border-radius:9px;background:#fff;padding:0 12px}
.stepper{display:grid;grid-template-columns:42px 1fr 42px;height:44px;border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#fff}
.stepper button{border:0;background:#fff;font-size:18px;cursor:pointer;color:var(--muted)}
.stepper input{min-width:0;width:100%;text-align:center;border:0;border-left:1px solid var(--line);border-right:1px solid var(--line);appearance:textfield;font-family:var(--mono)}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;margin:2px 0 20px;font-weight:500}
.check-row input{margin-top:2px;width:18px;height:18px;accent-color:var(--hot)}

/* result card — тёмная, как в POSLOYNO */
.quote-result{background:var(--dark-2);color:#fff;border-radius:14px;padding:22px 22px 20px;margin-top:16px;box-shadow:0 24px 60px -24px rgba(20,32,30,.5)}
.quote-result>div{display:flex;align-items:end;justify-content:space-between;gap:14px}
.quote-result>div span{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#93a49f}
.quote-result strong{font-family:var(--disp);font-size:52px;line-height:.9;color:#fff}
.quote-result dl{display:grid;grid-template-columns:repeat(3,1fr);margin:20px 0 0;gap:1px;background:rgba(255,255,255,.08);border-radius:9px;overflow:hidden}
.quote-result dl>div{background:rgba(0,0,0,.18);padding:11px 12px}
.quote-result dt{font-family:var(--mono);font-size:9.5px;text-transform:uppercase;letter-spacing:.06em;color:#8fa09b}
.quote-result dd{margin:5px 0 0;font-family:var(--mono);font-size:14px;font-weight:600;color:#fff;font-variant-numeric:tabular-nums}
.slice-note{font-size:13px;line-height:1.5;margin:10px 0 0;color:var(--muted)}
.fineprint{color:var(--faint);font-size:11px;line-height:1.5;margin:12px 0 18px}
.ai-link{width:100%;text-align:center}

/* ---------- PROCESS / TRUST ---------- */
.trust-band{background:var(--dark-2);color:#fff;padding:66px 0}
.process{display:grid;grid-template-columns:repeat(3,1fr);gap:44px}
.process>div{border-top:1px solid #33403d;padding-top:18px}
.process span{font-family:var(--mono);font-size:11px;color:var(--hot);letter-spacing:.08em}
.process h3{font-size:26px;margin:12px 0}
.process p{color:#aab4af;line-height:1.5;font-size:13.5px;max-width:32ch}

/* ---------- MATERIALS ---------- */
.materials,.faq{padding:96px 0}
.section-lead{display:grid;grid-template-columns:.35fr 1fr;align-items:start;margin-bottom:50px}
.section-lead .eyebrow{padding-top:10px}
.material-table{border-top:1px solid var(--ink)}
.material-row{display:grid;grid-template-columns:1.1fr 2fr 1.4fr .6fr;gap:20px;align-items:center;min-height:62px;border-bottom:1px solid var(--line);font-size:14px}
.material-row.header{min-height:38px;font-family:var(--mono);font-size:10px;color:var(--faint);text-transform:uppercase;letter-spacing:.08em}
.material-row strong{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums}
.table-note{max-width:64ch;color:var(--muted);font-size:12.5px;line-height:1.5;margin-top:20px}

/* ---------- WORKS ---------- */
.works{background:var(--dark);color:#fff;padding:92px 0 0}
.works .section-lead{width:var(--wrap);margin-inline:auto}
.works .section-lead .eyebrow{color:#8a938e}
.work-strip{display:grid;grid-template-columns:repeat(3,1fr)}
.work-item{min-height:520px;position:relative;background:var(--dark-2);border-top:1px solid #33403d;border-right:1px solid #33403d;overflow:hidden}
.work-item.light{background:#d8dbd4;color:var(--ink)}
.work-item canvas{position:absolute;inset:0;width:100%;height:100%}
.work-item>div{position:absolute;z-index:2;bottom:0;left:0;width:100%;padding:22px;background:linear-gradient(0deg,rgba(14,20,19,.85),rgba(14,20,19,.3));backdrop-filter:blur(6px)}
.work-item.light>div{background:linear-gradient(0deg,rgba(238,240,236,.9),rgba(238,240,236,.4));color:var(--ink)}
.work-item span{font-family:var(--disp);font-size:20px;font-weight:700}
.work-item p{font-size:12.5px;opacity:.78;margin:6px 0 0}

/* ---------- B2B ---------- */
.b2b{padding:104px 0;display:grid;grid-template-columns:1fr .75fr;gap:72px}
.b2b-copy{padding-top:34px}
.b2b-copy p{font-size:18px;line-height:1.55;color:var(--muted);margin-bottom:24px}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--ink)}
details{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none;padding:22px 0;font-family:var(--disp);font-size:19px;font-weight:700;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";color:var(--hot);font-family:var(--mono);transition:.2s transform}
details[open] summary:after{content:"+";transform:rotate(45deg)}
details p{max-width:72ch;color:var(--muted);line-height:1.55;padding:0 0 24px;margin:0}

/* ---------- FINAL CTA ---------- */
.final-cta{background:var(--blue);color:#fff;padding:100px 0}
.final-cta .wrap{display:grid;grid-template-columns:.35fr 1fr;align-items:start}
.final-cta .eyebrow{grid-row:1/4;color:#8fd6dc}
.final-cta p:not(.eyebrow){font-size:16px;max-width:60ch;margin:20px 0}
.final-cta .btn{justify-self:start}

/* ---------- FOOTER ---------- */
.footer{min-height:150px;display:grid;grid-template-columns:1fr 1fr 1fr;align-items:center;font-size:13px}
.footer .brand{color:var(--ink)}
.footer>p{text-align:center;margin:0;color:var(--faint)}
.footer>div:last-child{display:flex;justify-content:flex-end;gap:18px}
.footer a{color:var(--muted)}

/* ---------- MODALS ---------- */
.modal{border:0;padding:0;width:min(680px,calc(100vw - 24px));max-height:90vh;background:var(--paper);border-radius:16px;box-shadow:0 30px 120px rgba(0,0,0,.4)}
.modal::backdrop{background:rgba(10,15,14,.6);backdrop-filter:blur(4px)}
.modal-shell{padding:32px;position:relative;overflow:auto;max-height:90vh}
.modal-shell h2{font-size:36px;line-height:1;margin-bottom:22px}
.modal-close{position:absolute;top:18px;right:18px}
.modal-intro{font-size:13.5px;color:var(--muted);line-height:1.5}
.order-summary{display:flex;justify-content:space-between;align-items:center;padding:16px 0;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);margin-bottom:20px}
.order-summary strong{font-family:var(--disp);font-size:26px;color:var(--hot-ink)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.modal label{display:flex;flex-direction:column;gap:7px;font-size:12px;font-weight:600;margin-bottom:14px}
.modal input,.modal textarea{border:1px solid var(--line);background:#fff;padding:12px;border-radius:9px;outline:none}
.modal input:focus,.modal textarea:focus{border-color:var(--hot)}
.modal .check-row{flex-direction:row;font-weight:400}
.modal .check-row input{width:18px}
.form-error{min-height:18px;color:#c83320;font-size:12px}
.ai-answer{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px;font-size:13.5px;line-height:1.55;margin-bottom:16px}

/* ---------- TOAST ---------- */
.toast{position:fixed;right:22px;bottom:22px;z-index:90;background:var(--ink);color:#fff;padding:14px 18px;border-radius:10px;max-width:360px;font-size:13px;box-shadow:0 12px 40px rgba(0,0,0,.3);opacity:0;transform:translateY(10px);pointer-events:none;transition:.2s}
.toast.show{opacity:1;transform:translateY(0)}

/* ---------- LEGAL ---------- */
.legal-page{background:var(--paper)}
.legal{padding:140px 0 80px;max-width:80ch;margin-left:auto;margin-right:auto}
.legal h1{font-size:56px;line-height:.98}
.legal h2{margin-top:40px;font-size:22px}
.legal p{line-height:1.65;color:var(--muted)}
.legal-note{padding:16px 18px;border:1px solid #caa63c;background:#fbf6de;border-radius:10px}

/* ---------- ACCOUNT / ADMIN ---------- */
.app-shell{min-height:100vh;background:var(--paper-2)}
.app-top{height:66px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;border-bottom:1px solid var(--line);background:var(--white)}
.app-main{width:min(1160px,calc(100vw - 40px));margin:0 auto;padding:48px 0 88px}
.auth-panel{width:min(460px,100%);margin:80px auto;background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px}
.auth-panel h1{font-size:36px}
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;margin-bottom:20px;border:1px solid var(--line);border-radius:9px;overflow:hidden}
.auth-tabs button{height:42px;border:0;background:#fff;font-weight:600}
.auth-tabs button.active{background:var(--hot);color:#fff}
.auth-form label{display:block;font-size:12px;font-weight:600;margin:12px 0}
.auth-form input{display:block;width:100%;height:44px;border:1px solid var(--line);border-radius:9px;padding:0 12px;margin-top:6px}
.dashboard-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:28px}
.dashboard-head h1{font-size:44px;margin:0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);margin-bottom:34px}
.stat-grid>div{padding:18px}
.stat-grid>div+div{border-left:1px solid var(--line)}
.stat-grid span{font-family:var(--mono);font-size:10px;color:var(--faint);text-transform:uppercase;letter-spacing:.06em}
.stat-grid strong{display:block;font-family:var(--disp);font-size:32px;margin-top:6px;font-variant-numeric:tabular-nums}
.data-table{width:100%;border-collapse:collapse;background:#fff;border-radius:10px;overflow:hidden}
.data-table th,.data-table td{text-align:left;padding:12px;border-bottom:1px solid var(--line);font-size:12px;vertical-align:top}
.data-table th{font-family:var(--mono);font-size:9.5px;text-transform:uppercase;color:var(--faint);background:var(--paper-2)}
.status{display:inline-block;padding:4px 9px;border-radius:999px;font-family:var(--mono);font-size:9.5px;font-weight:500;background:var(--paper-2);color:var(--muted)}
.status.new{background:var(--hot-wash);color:var(--hot-ink)}
.status.ready,.status.done{background:color-mix(in srgb,var(--mint) 22%,transparent);color:#227a52}
.admin-tabs{display:flex;gap:6px;margin-bottom:18px}
.admin-tabs button{height:40px;padding:0 16px;border:1px solid var(--line);border-radius:9px;background:#fff;font-weight:600}
.admin-tabs button.active{background:var(--ink);color:#fff}
.settings-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;background:#fff;padding:20px;border:1px solid var(--line);border-radius:12px}
.settings-grid label{font-family:var(--mono);font-size:10px;font-weight:500;color:var(--muted)}
.settings-grid input{display:block;width:100%;height:40px;border:1px solid var(--line);border-radius:8px;margin-top:6px;padding:0 10px;font-family:var(--mono)}

/* ---------- RESPONSIVE ---------- */
@media (max-width:900px){
  :root{--wrap:min(100% - 32px,1200px)}
  .topbar{grid-template-columns:1fr auto;padding:0 16px;height:60px}.nav{display:none}
  .hero{height:84vh;min-height:580px}.hero-copy{padding-top:118px}.hero h1{font-size:64px}.hero-text{font-size:17px;max-width:40ch}
  .printed-vase{transform:rotate(-8deg) translate(20vw,8vh);opacity:.26}.hero-next{display:none}
  .calc-head,.section-lead,.b2b,.final-cta .wrap{grid-template-columns:1fr;gap:20px}
  .calculator{grid-template-columns:1fr}.model-side{padding:24px 0;border-right:0;border-bottom:1px solid var(--line)}.quote-side{padding:26px 0}
  .material-grid{grid-template-columns:repeat(3,1fr)}.work-strip{grid-template-columns:1fr}.work-item{min-height:460px}
  .process{grid-template-columns:1fr;gap:26px}.final-cta .eyebrow{grid-row:auto}
  .footer{grid-template-columns:1fr;gap:16px;padding:30px 0}.footer>p{text-align:left}.footer>div:last-child{justify-content:flex-start;flex-wrap:wrap}
  .stat-grid{grid-template-columns:1fr 1fr}.stat-grid>div:nth-child(3){border-left:0;border-top:1px solid var(--line)}.stat-grid>div:nth-child(4){border-top:1px solid var(--line)}
  .data-table{min-width:820px}.table-scroll{overflow:auto}.settings-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  :root{--wrap:calc(100% - 28px)}
  .hero{min-height:560px;height:82vh}.hero-shade{width:100%;background:linear-gradient(0deg,rgba(14,20,19,.5),rgba(14,20,19,.25))}.hero-copy{padding-top:104px}.hero h1{font-size:52px}.hero-text{font-size:15.5px}
  .hero-meta{gap:9px 16px;margin-top:22px}.hero-actions{display:grid;grid-template-columns:1fr 1fr}.btn{padding:0 12px}
  .calculator-band,.materials,.faq{padding:64px 0}.calc-head h2,.section-lead h2,.b2b h2,.final-cta h2{font-size:40px}
  .model-view{height:300px}.model-stats{grid-template-columns:1fr}.model-stats>div+div{border-left:0;border-top:1px solid var(--line);padding-left:0}
  .material-grid{grid-template-columns:1fr 1fr}.control-row,.form-grid{grid-template-columns:1fr}.quote-result strong{font-size:42px}
  .process{gap:18px}.material-row{grid-template-columns:1fr 1fr;gap:8px;padding:12px 0}.material-row.header{display:none}.material-row span:nth-child(3){display:none}
  .b2b{padding:72px 0}.work-item{min-height:400px}.modal-shell{padding:24px 18px}.modal-shell h2{font-size:30px}
  .legal{padding:110px 18px 56px}.legal h1{font-size:44px}
  .dashboard-head{display:block}.dashboard-head h1{font-size:34px;margin-bottom:16px}.stat-grid{grid-template-columns:1fr 1fr}.settings-grid{grid-template-columns:1fr}.app-main{width:calc(100vw - 24px);padding-top:30px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

/* ==========================================================================
   MATERIAL 3 UX LAYER — правила Google UX поверх айдентики POSLOYNO.
   Меняет поведение и эргономику (зоны нажатия, состояния, фокус, контраст,
   motion), не трогая палитру и типографику бренда.
   ========================================================================== */
:root{
  /* shape scale */
  --m3-xs:4px; --m3-s:8px; --m3-m:12px; --m3-l:16px; --m3-xl:28px;
  /* motion: длительности и кривые */
  --m3-short:150ms; --m3-med:250ms; --m3-long:400ms;
  --m3-standard:cubic-bezier(.2,0,0,1);
  --m3-decelerate:cubic-bezier(0,0,0,1);
  /* state layer opacities */
  --m3-hover:.08; --m3-focus:.10; --m3-press:.10;
  /* минимальная зона нажатия */
  --m3-target:48px;
  /* контрастный вторичный текст (AA ≥4.5:1 на --paper) */
  --faint:#5E6C67;
}

/* --- 1. Видимый фокус: везде, толщиной ≥2px и с зазором --- */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,
textarea:focus-visible,summary:focus-visible,label:focus-visible,[tabindex]:focus-visible{
  outline:3px solid var(--hot);outline-offset:2px;border-radius:var(--m3-xs)
}
.hero :focus-visible,.topbar :focus-visible,.works :focus-visible,
.trust-band :focus-visible,.final-cta :focus-visible,.quote-result :focus-visible{
  outline-color:#fff
}
/* фокус внутри радио/чекбокса — на видимой обёртке, а не на скрытом input */
.material-option:has(input:focus-visible),.segmented label:has(input:focus-visible){
  outline:3px solid var(--hot);outline-offset:2px
}

/* --- 2. Зоны нажатия ≥48×48 --- */
.icon-btn{width:var(--m3-target);height:var(--m3-target)}
.segmented span{height:var(--m3-target)}
.field select,.stepper,.auth-form input,.settings-grid input{height:var(--m3-target)}
.stepper{grid-template-columns:var(--m3-target) 1fr var(--m3-target)}
.admin-tabs button,.auth-tabs button{height:var(--m3-target)}
.nav a{display:inline-flex;align-items:center;min-height:var(--m3-target)}
.account-link{display:inline-flex;align-items:center;min-height:var(--m3-target)}
.text-link,.ai-link{min-height:var(--m3-target);display:inline-flex;align-items:center;justify-content:center}
.check-row{min-height:var(--m3-target);align-items:center}
.check-row input{width:20px;height:20px;margin-top:0;flex:none}
.material-option{min-height:64px;justify-content:center}
summary{min-height:var(--m3-target);align-items:center}
.modal-close{width:var(--m3-target);height:var(--m3-target)}

/* --- 3. State layers: hover / focus / pressed --- */
.btn,.icon-btn,.material-option,.admin-tabs button,.auth-tabs button{
  position:relative;overflow:hidden;isolation:isolate;
  transition:background var(--m3-short) var(--m3-standard),
             border-color var(--m3-short) var(--m3-standard),
             transform var(--m3-short) var(--m3-standard)
}
.btn::after,.icon-btn::after,.material-option::after,
.admin-tabs button::after,.auth-tabs button::after{
  content:"";position:absolute;inset:0;background:currentColor;opacity:0;
  pointer-events:none;transition:opacity var(--m3-short) var(--m3-standard);z-index:-1
}
.btn:hover::after,.icon-btn:hover::after,.material-option:hover::after,
.admin-tabs button:hover::after,.auth-tabs button:hover::after{opacity:var(--m3-hover)}
.btn:active::after,.icon-btn:active::after,.material-option:active::after,
.admin-tabs button:active::after,.auth-tabs button:active::after{opacity:var(--m3-press)}
/* сегменты: state layer на видимом span, иначе он окажется под его фоном */
.segmented span{transition:background var(--m3-short) var(--m3-standard),color var(--m3-short) var(--m3-standard)}
.segmented label:hover input:not(:checked)+span{background:color-mix(in srgb,var(--ink) 8%,transparent)}
.segmented label:active input:not(:checked)+span{background:color-mix(in srgb,var(--ink) 12%,transparent)}
.segmented label:hover input:checked+span{background:var(--hot-ink)}
/* на цветных кнопках слой светлый, чтобы читался */
.btn-primary::after,.btn-dark::after{background:#fff}

/* --- 4. Disabled по M3: 38% и без интеракций --- */
.btn:disabled,button:disabled,input:disabled,select:disabled{opacity:.38;cursor:not-allowed}
.btn:disabled::after,button:disabled::after{opacity:0!important}

/* --- 5. Читаемость: минимальный кегль 11px, контраст AA --- */
.material-option small,.range-hints,.stat-grid span,.data-table th,.status,
.model-stats dt,.quote-result dt,.drop-kicker{font-size:11px}
.fineprint{font-size:12px;color:var(--muted)}
.hero-next,.live-dot{font-size:12px}

/* --- 6. Ошибки: не только цветом, но и значком --- */
.form-error:not(:empty){display:flex;align-items:flex-start;gap:7px;font-weight:600}
.form-error:not(:empty)::before{content:"⚠";flex:none;line-height:1.2}

/* --- 7. Поля ввода: явные состояния --- */
.modal input,.modal textarea,.auth-form input,.settings-grid input,.field select,.manual-volume input{
  transition:border-color var(--m3-short) var(--m3-standard),box-shadow var(--m3-short) var(--m3-standard)
}
.modal input:hover,.modal textarea:hover,.auth-form input:hover{border-color:var(--muted)}
.modal input:focus,.modal textarea:focus,.auth-form input:focus,.settings-grid input:focus,.field select:focus{
  border-color:var(--hot);box-shadow:0 0 0 3px color-mix(in srgb,var(--hot) 22%,transparent);outline:none
}

/* --- 8. Snackbar (toast) по M3: слева снизу, плавный вход --- */
.toast{border-radius:var(--m3-xs);transition:opacity var(--m3-med) var(--m3-decelerate),
  transform var(--m3-med) var(--m3-decelerate)}

/* --- 9. Скругления по shape-шкале --- */
.btn,.dropzone,.material-option,.segmented,.field select,.stepper,.icon-btn{border-radius:var(--m3-m)}
.quote-result,.modal,.auth-panel,.settings-grid,.model-view{border-radius:var(--m3-l)}

/* --- 10. Курсор и выделение --- */
label,summary,.material-option,.segmented label{cursor:pointer}
::selection{background:color-mix(in srgb,var(--hot) 30%,transparent)}