/* ============================================================
   NLSGPT — публичный сайт. Прототип на согласование.
   Светлая сцена. Цвет кодирует поставщика модели, а не настроение.
   Ничего не тянем с CDN, кроме шрифтов: так же ляжет в Rails.
   ============================================================ */

:root{
  /* поверхности */
  --paper:#FFFFFF;
  --tint:#F4F7FC;
  --tint-2:#EDF3FA;
  --deep:#0A1220;
  --deep-2:#111C2E;

  /* текст */
  --ink:#0A1220;
  --ink-2:#33465E;
  --muted:#6E819A;
  --dim:#93A3B8;
  --line:#E4EAF2;
  --line-2:#EEF2F8;

  /* фирменный — только действия и ссылки */
  --brand:#0E86C4;
  --brand-hi:#12A0E8;
  --brand-lo:#0B76AD;

  /* один цвет на поставщика: цвет несёт информацию */
  --openai:#10A37F;
  --anthropic:#D97757;
  --google:#4285F4;
  --deepseek:#7C5CFF;

  --ok:#0F9D6E;
  --warn:#B4790B;
  --bad:#D93A5B;

  --r:14px;
  --r-s:10px;
  --shadow:0 1px 2px rgba(10,18,32,.04), 0 8px 24px -12px rgba(10,18,32,.14);
  --shadow-lift:0 2px 4px rgba(10,18,32,.05), 0 24px 48px -20px rgba(10,18,32,.24);

  --display:"Unbounded",system-ui,sans-serif;
  --body:"Manrope",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--paper);color:var(--ink);
  font-family:var(--body);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

/* ---------- сетка ---------- */
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
.sec{padding:104px 0}
.sec-tight{padding:72px 0}
.tinted{background:var(--tint)}
.bordered{border-top:1px solid var(--line)}

/* ---------- типографика ---------- */
.eyebrow{
  font-family:var(--mono);font-size:12px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--brand);
  display:inline-flex;align-items:center;gap:12px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;flex:none}

h1,h2,h3{font-family:var(--display);font-weight:600;letter-spacing:-.03em;line-height:1.06;text-wrap:balance}
h1{font-size:clamp(30px,3.2vw,42px);font-weight:700;letter-spacing:-.042em}
h2{font-size:clamp(25px,2.8vw,35px)}
h3{font-size:19px;letter-spacing:-.02em;line-height:1.25}

.lede{font-size:clamp(16px,1.5vw,19px);line-height:1.6;color:var(--ink-2);max-width:56ch}
.note{font-size:13px;color:var(--muted)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.head{max-width:66ch}
.head h2{margin:14px 0 12px}
.head p{color:var(--muted);max-width:58ch}

/* градиентная строка заголовка — единственное место, где текст цветной */
.grad{
  background:linear-gradient(96deg,var(--brand) 0%,#4E63EE 46%,var(--deepseek) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---------- кнопки ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:11px;
  font-size:14.5px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;
  transition:transform .18s cubic-bezier(.2,.7,.2,1),box-shadow .18s,background .18s,border-color .18s;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  color:#fff;background:linear-gradient(135deg,var(--brand-hi),var(--brand) 60%,var(--brand-lo));
  box-shadow:0 1px 2px rgba(11,118,173,.3), 0 12px 26px -12px rgba(14,134,196,.7);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 2px 4px rgba(11,118,173,.3), 0 20px 34px -14px rgba(14,134,196,.85)}
.btn-ghost{border:1px solid var(--line);background:var(--paper);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-on-dark{border:1px solid rgba(255,255,255,.22);color:#fff}
.btn-on-dark:hover{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.06)}
.btn-sm{height:36px;padding:0 15px;font-size:13px;border-radius:9px}

/* ---------- шапка ---------- */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .25s,box-shadow .25s}
.nav.stuck{border-bottom-color:var(--line);box-shadow:0 8px 24px -20px rgba(10,18,32,.5)}
.nav-in{display:flex;align-items:center;gap:28px;height:66px}
.logo{font-family:var(--display);font-weight:600;font-size:18px;letter-spacing:-.03em;margin-right:6px}
.logo b{color:var(--brand);font-weight:600}
.nav-links{display:flex;gap:26px;font-size:14px;font-weight:500;color:var(--ink-2)}
.nav-links a{position:relative;padding:4px 0;transition:color .18s}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);transition:right .28s cubic-bezier(.2,.7,.2,1)}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after,.nav-links a.on::after{right:0}
.nav-links a.on{color:var(--brand);font-weight:700}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:10px}
.only-mobile{display:none}
.burger{display:none;margin-left:auto;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  align-items:center;justify-content:center}
.burger span{display:block;width:17px;height:1.5px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:17px;height:1.5px;background:var(--ink)}
.burger span::before{top:-5px}.burger span::after{top:5px}

/* ---------- герой ---------- */
.hero{position:relative;overflow:hidden;padding:60px 0 84px}
.aurora{position:absolute;inset:-26% -6% auto -6%;height:820px;pointer-events:none;z-index:0;
  filter:blur(58px);opacity:.78}
.aurora i{position:absolute;display:block;border-radius:50%;animation:drift 22s ease-in-out infinite}
.aurora i:nth-child(1){width:520px;height:520px;left:2%;top:22%;background:rgba(16,163,127,.34)}
.aurora i:nth-child(2){width:460px;height:460px;left:26%;top:6%;background:rgba(66,133,244,.32);animation-delay:-6s}
.aurora i:nth-child(3){width:500px;height:500px;left:52%;top:16%;background:rgba(124,92,255,.3);animation-delay:-12s}
.aurora i:nth-child(4){width:420px;height:420px;left:76%;top:4%;background:rgba(217,119,87,.3);animation-delay:-18s}
@keyframes drift{
  0%,100%{transform:translate3d(0,0,0) scale(1)}
  33%{transform:translate3d(46px,34px,0) scale(1.1)}
  66%{transform:translate3d(-34px,22px,0) scale(.94)}
}
.hero-in{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
  gap:44px;align-items:center}
.hero h1{margin:20px 0 22px}
.hero-cta{display:flex;gap:12px;margin:30px 0 0;flex-wrap:wrap}

/* строка доверия под кнопками */
.trust{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.trust span{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;color:var(--ink-2);
  background:rgba(255,255,255,.72);border:1px solid var(--line);border-radius:999px;padding:6px 13px}
.trust span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok);flex:none}

/* ---------- шаңырақ-роутер: подпись продукта ---------- */
.router{width:100%;max-width:520px;margin-left:auto;overflow:visible}
.router .ring{fill:none;stroke:var(--line);stroke-width:1}
.router .tick{stroke:var(--line);stroke-width:1;opacity:.9}
.router .spoke{fill:none;stroke:#DCE5F0;stroke-width:1.5;stroke-linecap:round;
  stroke-dasharray:100;stroke-dashoffset:100;animation:draw .9s cubic-bezier(.2,.7,.2,1) forwards}
.router .flow{fill:none;stroke-width:3;stroke-linecap:round;stroke-dasharray:15 100;stroke-dashoffset:15;
  animation:flow 2.6s linear infinite;opacity:0}
.router.live .flow{opacity:1}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes flow{from{stroke-dashoffset:15}to{stroke-dashoffset:-100}}
.router .hub{fill:var(--paper);stroke:var(--brand);stroke-width:2}
.router .petal{fill:none;stroke:var(--brand);stroke-width:1.5;opacity:.22}
.router .control{fill:none;stroke:var(--brand);stroke-width:1.5;stroke-dasharray:3 7;opacity:.55;
  transform-origin:260px 260px;animation:spin 26s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.router .pill{fill:var(--paper);stroke-width:1.5}
.router .plabel{font-family:var(--body);font-size:14px;font-weight:700;text-anchor:middle;letter-spacing:-.01em}
.router .hublabel{font-family:var(--display);font-size:15px;font-weight:600;fill:var(--ink);text-anchor:middle;letter-spacing:-.03em}
.router .cap{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  fill:var(--dim);text-anchor:middle}
.router .node{opacity:0;animation:pop .5s cubic-bezier(.2,1.3,.4,1) forwards}
@keyframes pop{from{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}

/* ---------- бегущая строка моделей ---------- */
.ticker{border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,var(--tint),#fff 30%,#fff 70%,var(--tint));overflow:hidden}
.ticker-track{display:flex;width:max-content;animation:slide 46s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
@keyframes slide{to{transform:translateX(-50%)}}
.tick-item{display:flex;align-items:baseline;gap:10px;padding:15px 26px;white-space:nowrap;
  border-right:1px solid var(--line-2)}
.tick-item i{width:7px;height:7px;border-radius:50%;align-self:center;flex:none}
.tick-item b{font-size:13.5px;font-weight:700}
.tick-item span{font-family:var(--mono);font-size:13px;font-variant-numeric:tabular-nums;color:var(--muted)}

/* ---------- препятствия: строки, а не сетка карточек ---------- */
.walls{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1fr);gap:60px;align-items:start}
.walls-sticky{position:sticky;top:110px}
.wall{display:grid;grid-template-columns:auto 1fr;gap:22px;padding:26px 0;border-top:1px solid var(--line)}
.wall:first-child{border-top:0;padding-top:0}
.wall-mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;flex:none;
  background:rgba(14,134,196,.08);color:var(--brand);
  transition:transform .3s cubic-bezier(.2,1.3,.4,1),background .3s}
.wall-mark svg{width:21px;height:21px}
.wall:hover .wall-mark{transform:rotate(-7deg) scale(1.08);background:rgba(14,134,196,.14)}
.wall-was{font-size:14px;color:var(--bad);font-weight:600;margin-bottom:4px}
.wall h3{margin-bottom:7px}
.wall p{color:var(--muted);font-size:15px}

/* ---------- карточки ---------- */
.cards{display:grid;gap:16px}
.c4{grid-template-columns:repeat(4,minmax(0,1fr))}
.c3{grid-template-columns:repeat(3,minmax(0,1fr))}
.c2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{position:relative;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);
  padding:24px 22px;overflow:hidden;transition:transform .3s cubic-bezier(.2,.7,.2,1),box-shadow .3s,border-color .3s}
.card{display:flex;flex-direction:column}
.card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:var(--c,var(--brand));transform:scaleX(.34);transform-origin:left;
  transition:transform .45s cubic-bezier(.2,.7,.2,1)}
.card:hover{transform:translateY(-5px);border-color:transparent;
  box-shadow:0 2px 4px rgba(10,18,32,.05),0 26px 50px -22px color-mix(in srgb,var(--c,var(--brand)) 55%,transparent)}
.card:hover::before{transform:scaleX(1)}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);font-size:14px;margin-bottom:18px}
.card-lead{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--c,var(--brand));margin-bottom:12px;font-weight:500}

/* цена внутри карточки модели */
.price{margin-top:auto;padding-top:16px;border-top:1px solid var(--line-2);display:flex;align-items:baseline;gap:9px}
.price b{font-family:var(--mono);font-size:23px;font-weight:700;letter-spacing:-.03em;white-space:nowrap}
.price span{font-size:12px;color:var(--muted);line-height:1.35}

/* ---------- тёмная секция про деньги ---------- */
.dark{background:var(--deep);color:#DCE6F2;position:relative;overflow:hidden}
.dark h2,.dark h3{color:#fff}
.dark .head p{color:#8FA2BC}
.dark .eyebrow{color:var(--brand-hi)}
.dark-glow{position:absolute;inset:auto -10% -60% 20%;height:600px;filter:blur(90px);opacity:.4;pointer-events:none}
.dark-glow i{position:absolute;display:block;border-radius:50%;width:480px;height:480px}
.dark-glow i:nth-child(1){left:0;background:rgba(14,134,196,.6)}
.dark-glow i:nth-child(2){left:34%;background:rgba(124,92,255,.45)}

/* ---------- код и диффы ---------- */
.term{background:var(--deep-2);border:1px solid rgba(255,255,255,.08);border-radius:var(--r);overflow:hidden;
  box-shadow:0 30px 60px -30px rgba(10,18,32,.6)}
.term-bar{display:flex;align-items:center;gap:9px;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.02)}
.term-bar i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.16)}
.term-bar b{margin-left:8px;font-family:var(--mono);font-size:11.5px;font-weight:500;letter-spacing:.1em;
  text-transform:uppercase;color:#7C8FA8}
.term-body{padding:20px 18px;font-family:var(--mono);font-size:13px;line-height:1.85;color:#C9D6E5;
  overflow-x:auto;white-space:pre;min-height:60px}
.term-body .k{color:#7DD3FC}.term-body .s{color:#86EFAC}.term-body .c{color:#64748B}
.term-body .del{color:#FCA5B5;background:rgba(217,58,91,.14);display:block;margin:0 -18px;padding:0 18px}
.term-body .add{color:#86EFAC;background:rgba(15,157,110,.16);display:block;margin:0 -18px;padding:0 18px}
.caret::after{content:"▍";color:var(--brand-hi);animation:blink 1s step-end infinite}
@keyframes blink{50%{opacity:0}}

/* счётчик тенге */
.meter{margin-top:16px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px}
.meter-top{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:14px}
.meter-top b{font-family:var(--mono);font-size:30px;font-weight:700;letter-spacing:-.03em}
.meter-bar{height:6px;border-radius:99px;background:var(--tint-2);overflow:hidden}
.meter-bar i{display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,var(--brand-hi),var(--deepseek));transition:width .3s linear}
.meter-legend{display:flex;justify-content:space-between;margin-top:10px;font-size:12px;color:var(--muted)}

/* ---------- шаги: настоящая последовательность, поэтому нумерация честная ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.steps::before{content:"";position:absolute;left:22px;right:22px;top:22px;height:2px;background:var(--line)}
.steps::after{content:"";position:absolute;left:22px;top:22px;height:2px;width:0;
  background:linear-gradient(90deg,var(--brand-hi),var(--brand));
  transition:width 1.1s cubic-bezier(.2,.7,.2,1)}
.steps.run::after{width:calc(100% - 44px)}
.step{position:relative;z-index:1;padding-top:64px}
.step-n{position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;background:var(--paper);
  border:2px solid var(--line);display:grid;place-items:center;font-family:var(--mono);font-size:15px;font-weight:700;
  color:var(--dim);transition:border-color .4s,color .4s,box-shadow .4s}
.steps.run .step-n{border-color:var(--brand);color:var(--brand);box-shadow:0 0 0 6px rgba(14,134,196,.1)}
.step h3{margin-bottom:8px}
.step p{color:var(--muted);font-size:14px}
.step small{display:block;margin-top:10px;font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--dim)}

/* ---------- таблица ---------- */
.table-wrap{border:1px solid var(--line);border-radius:var(--r);overflow-x:auto;background:var(--paper)}
table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th{text-align:left;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.13em;
  text-transform:uppercase;color:var(--dim);padding:14px 18px;background:var(--tint);border-bottom:1px solid var(--line)}
table.t td{padding:15px 18px;border-bottom:1px solid var(--line-2);vertical-align:top}
table.t tr:last-child td{border-bottom:0}
table.t tbody tr{transition:background .18s}
table.t tbody tr:hover{background:var(--tint)}
.num{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}
.provider{display:flex;align-items:center;gap:8px;margin-top:5px;font-size:12.5px;color:var(--muted)}
.provider::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c);flex:none}

/* ---------- вопросы ---------- */
.faq{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;gap:20px;padding:22px 0;text-align:left;
  font-family:var(--display);font-weight:600;font-size:17px;letter-spacing:-.02em;line-height:1.3}
.faq-q i{margin-left:auto;flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  position:relative;transition:background .25s,border-color .25s,transform .3s}
.faq-q i::before,.faq-q i::after{content:"";position:absolute;left:50%;top:50%;background:var(--ink);
  transform:translate(-50%,-50%);transition:opacity .25s,background .25s}
.faq-q i::before{width:11px;height:1.5px}
.faq-q i::after{width:1.5px;height:11px}
.faq-item.open .faq-q i{background:var(--brand);border-color:var(--brand);transform:rotate(90deg)}
.faq-item.open .faq-q i::before,.faq-item.open .faq-q i::after{background:#fff}
.faq-item.open .faq-q i::after{opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .38s cubic-bezier(.2,.7,.2,1)}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{color:var(--muted);font-size:15px;max-width:68ch;padding-bottom:24px}

/* ---------- финальный призыв ---------- */
.cta{position:relative;overflow:hidden;border-radius:22px;padding:64px 56px;color:#fff;
  background:linear-gradient(120deg,#0B76AD,#0E86C4 26%,#5B6BF0 62%,#7C5CFF 100%)}
.cta::before{content:"";position:absolute;inset:-50% -20% auto -20%;height:520px;
  background:radial-gradient(45% 60% at 22% 40%,rgba(255,255,255,.28),transparent 70%);pointer-events:none}
.cta h2{color:#fff;max-width:17ch;position:relative}
.cta p{color:rgba(255,255,255,.86);max-width:52ch;margin:14px 0 28px;position:relative;font-size:17px}
.cta .btn-primary{background:#fff;color:var(--brand-lo);box-shadow:0 14px 30px -14px rgba(0,0,0,.5)}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;position:relative}

/* ---------- подвал ---------- */
.foot{background:var(--deep);color:#7F91A8;font-size:13.5px;padding:60px 0 34px}
.foot-in{display:grid;grid-template-columns:2.2fr 1fr 1fr 1fr;gap:36px}
.foot b{display:block;color:#D6E1EE;margin-bottom:12px;font-size:13px;font-family:var(--mono);
  letter-spacing:.14em;text-transform:uppercase;font-weight:500}
.foot p{margin-bottom:6px;line-height:1.55}
.foot a{transition:color .18s}
.foot a:hover{color:#fff}
.foot-logo{font-family:var(--display);font-size:20px;font-weight:600;color:#fff;letter-spacing:-.03em;margin-bottom:14px}
.foot-logo b{display:inline;color:var(--brand-hi);font-family:inherit;font-size:inherit;letter-spacing:inherit;
  text-transform:none;margin:0}
.foot-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px;color:#5D6F86}

/* ---------- появление при скролле ---------- */
.js .rise{opacity:0;transform:translateY(20px);
  transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);
  transition-delay:var(--d,0ms)}
.js .rise.in{opacity:1;transform:none}

/* ---------- адаптив ---------- */
@media (max-width:980px){
  .hero-in{grid-template-columns:1fr;gap:44px}
  .router{max-width:460px;margin:0 auto}
  .walls{grid-template-columns:1fr;gap:34px}
  .walls-sticky{position:static}
  .c4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .c3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px 22px}
  .steps::before,.steps::after{display:none}
  .foot-in{grid-template-columns:1fr 1fr}
  .nav-links,.nav-cta .btn-ghost{display:none}
  .burger{display:flex}
}
@media (max-width:640px){
  .sec{padding:68px 0}
  .wrap{padding:0 20px}
  .c4,.c3,.c2,.steps{grid-template-columns:1fr}
  .cta{padding:44px 26px;border-radius:16px}
  .foot-in{grid-template-columns:1fr}
  .hero{padding:44px 0 68px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important}
  .rise,.js .rise{opacity:1;transform:none}
  .router .spoke{stroke-dashoffset:0}
  .router .node{opacity:1}
}

/* ---------- SVG-трансформации считаем в системе координат картинки ---------- */
.router .node,.router .control{transform-box:view-box}

/* ---------- меню на телефоне ---------- */
.nav{position:sticky}
.nav-in{position:relative}
@media (max-width:980px){
  body.menu-open .nav-links{
    display:flex;flex-direction:column;gap:0;
    position:absolute;left:-28px;right:-28px;top:66px;z-index:70;
    background:var(--paper);border-bottom:1px solid var(--line);
    padding:6px 28px 16px;box-shadow:0 20px 40px -24px rgba(10,18,32,.5);
  }
  body.menu-open .nav-links a{padding:13px 0;border-bottom:1px solid var(--line-2);font-size:15px}
  body.menu-open .nav-links a::after{display:none}
  body.menu-open .nav-links .only-mobile{display:block;font-weight:700;color:var(--brand)}
}

/* ============================================================
   Блоки отдельных страниц
   ============================================================ */

/* утилиты сетки */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}
.grid-2-wide{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);gap:48px;align-items:start}
.grid-side{display:grid;grid-template-columns:230px minmax(0,1fr);gap:52px;align-items:start}
.mt-l{margin-top:46px}.mt-m{margin-top:26px}.mt-s{margin-top:14px}
.center{text-align:center;margin-left:auto;margin-right:auto}
.link{color:var(--brand);font-weight:700;display:inline-flex;align-items:center;gap:7px;font-size:14.5px}
.link i{transition:transform .25s cubic-bezier(.2,.7,.2,1);font-style:normal}
.link:hover i{transform:translateX(4px)}

/* цифры на тёмном */
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.1);border-radius:var(--r);overflow:hidden}
.stat{background:var(--deep);padding:32px 28px}
.stat b{display:block;font-family:var(--mono);font-size:clamp(28px,4vw,44px);font-weight:700;
  letter-spacing:-.045em;color:#fff;line-height:1}
.stat > span{display:block;margin-top:12px;font-size:14px;color:#8FA2BC;line-height:1.45}
.rules{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;list-style:none}
.rules li{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;color:#C4D2E4;
  border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:8px 16px}
.rules li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok);flex:none}

/* фишки-фильтры */
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--paper);
  border-radius:999px;padding:8px 16px;font-size:13.5px;font-weight:600;color:var(--ink-2);
  transition:border-color .2s,color .2s,background .2s,transform .2s}
.chip::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c,var(--dim));flex:none}
.chip:hover{transform:translateY(-2px);border-color:var(--c,var(--brand))}
.chip.on{border-color:var(--c,var(--brand));color:var(--c,var(--brand));
  background:color-mix(in srgb,var(--c,var(--brand)) 8%,var(--paper))}

/* калькулятор расхода */
.calc{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:0;border:1px solid var(--line);
  border-radius:var(--r);overflow:hidden;background:var(--paper)}
.calc-controls{padding:30px 30px 34px}
.calc-row{margin-bottom:24px}
.calc-row:last-child{margin-bottom:0}
.calc-row label{display:flex;justify-content:space-between;align-items:baseline;gap:14px;
  font-size:14px;font-weight:600;margin-bottom:10px}
.calc-row label b{font-family:var(--mono);font-size:15px;font-weight:700;color:var(--brand)}
.calc-row select{width:100%;height:44px;border:1px solid var(--line);border-radius:10px;padding:0 14px;
  font-size:14.5px;font-weight:600;background:var(--paper)}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:99px;
  background:var(--tint-2);outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;
  background:var(--paper);border:2px solid var(--brand);cursor:pointer;
  box-shadow:0 2px 8px rgba(14,134,196,.4);transition:transform .15s}
input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.14)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--paper);
  border:2px solid var(--brand);cursor:pointer}
.calc-out{background:linear-gradient(160deg,#0E86C4,#4B62E8 55%,#7C5CFF);color:#fff;padding:30px;
  display:flex;flex-direction:column;justify-content:center}
.calc-out small{font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;font-family:var(--mono);
  color:rgba(255,255,255,.75)}
.calc-out .sum{font-family:var(--mono);font-size:clamp(30px,4vw,42px);font-weight:700;letter-spacing:-.04em;
  margin:10px 0 4px;line-height:1}
.calc-out .per{font-size:14px;color:rgba(255,255,255,.85)}
.calc-out .hint{margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.24);
  font-size:13.5px;line-height:1.5;color:rgba(255,255,255,.9)}

/* переключение примеров кода */
.tabs{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:16px}
.tab{padding:8px 15px;border-radius:9px;font-size:13.5px;font-weight:700;color:var(--muted);
  border:1px solid transparent;transition:all .2s}
.tab:hover{color:var(--ink)}
.tab.on{background:var(--ink);color:#fff}
.copy{margin-left:auto;font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;
  color:#7C8FA8;padding:6px 12px;border:1px solid rgba(255,255,255,.14);border-radius:8px;transition:all .2s}
.copy:hover{color:#fff;border-color:rgba(255,255,255,.4)}

/* оглавление договора */
.toc{position:sticky;top:104px;font-size:14px}
.toc b{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--dim);margin-bottom:14px;font-weight:500}
.toc a{display:block;padding:7px 0 7px 14px;border-left:2px solid var(--line);color:var(--muted);
  transition:color .2s,border-color .2s}
.toc a:hover{color:var(--brand);border-left-color:var(--brand)}

/* текст договора */
.legal h3{margin:38px 0 12px;scroll-margin-top:104px}
.legal h3:first-child{margin-top:0}
.legal p{color:var(--ink-2);font-size:15px;margin-bottom:12px;max-width:72ch}
.legal ol,.legal ul{margin:0 0 14px 20px;color:var(--ink-2);font-size:15px}
.legal li{margin-bottom:8px}

/* пары «поле — значение» */
.kv{display:grid;grid-template-columns:auto 1fr;gap:12px 22px;font-size:14.5px}
.kv dt{color:var(--muted)}
.kv dd{font-weight:600}

/* крупное утверждение */
.claim{font-family:var(--display);font-weight:700;font-size:clamp(28px,4.6vw,54px);line-height:1.05;
  letter-spacing:-.04em;max-width:16ch}
.claim em{font-style:normal;color:var(--brand)}

/* что храним и чего не храним */
.yesno{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.yesno > div{border-radius:var(--r);padding:26px 24px;border:1px solid var(--line)}
.yesno .no{background:#FEF4F6;border-color:#F7DBE1}
.yesno .yes{background:#F1FAF6;border-color:#D6EFE4}
.yesno h3{margin-bottom:16px}
.yesno ul{list-style:none}
.yesno li{position:relative;padding-left:26px;margin-bottom:11px;font-size:14.5px;color:var(--ink-2)}
.yesno li::before{position:absolute;left:0;top:0;font-family:var(--mono);font-weight:700}
.yesno .no li::before{content:"×";color:var(--bad);font-size:18px;line-height:1.2}
.yesno .yes li::before{content:"✓";color:var(--ok)}

/* месяц бухгалтера */
.tl{list-style:none;border-left:2px solid var(--line);margin-left:9px}
.tl li{position:relative;padding:0 0 30px 32px}
.tl li:last-child{padding-bottom:0}
.tl li::before{content:"";position:absolute;left:-10px;top:4px;width:18px;height:18px;border-radius:50%;
  background:var(--paper);border:2px solid var(--brand)}
.tl b{display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--brand);margin-bottom:6px}
.tl h3{margin-bottom:6px}
.tl p{color:var(--muted);font-size:14.5px;max-width:62ch}

/* страница 404 */
.e404{text-align:center;padding:110px 0 120px;position:relative;overflow:hidden}
.e404 .code{font-family:var(--display);font-weight:700;font-size:clamp(90px,18vw,190px);line-height:.9;
  letter-spacing:-.06em;margin-bottom:12px}

@media (max-width:980px){
  .calc{grid-template-columns:1fr}
  .grid-side{grid-template-columns:1fr;gap:30px}
  .toc{position:static;display:flex;flex-wrap:wrap;gap:4px}
  .toc b{width:100%}
  .toc a{border-left:0;border:1px solid var(--line);border-radius:999px;padding:7px 14px}
}
@media (max-width:640px){
  .stats{grid-template-columns:1fr}
  .yesno,.grid-2{grid-template-columns:1fr}
}

/* шаңырақ на призыве к действию: та же фигура, что и в герое */
.cta-ring{position:absolute;right:-120px;top:50%;width:520px;height:520px;
  transform:translateY(-50%);opacity:.17;pointer-events:none;animation:spin 90s linear infinite}
.cta-ring circle,.cta-ring path,.cta-ring line{fill:none;stroke:#fff;stroke-width:1.2}
.cta-ring .dash{stroke-dasharray:3 9}
@media (max-width:860px){.cta-ring{display:none}}

/* коды ответов */
.badge{display:inline-flex;align-items:center;justify-content:center;min-width:52px;height:28px;padding:0 10px;
  border-radius:8px;font-family:var(--mono);font-size:13px;font-weight:700;
  background:color-mix(in srgb,var(--c,var(--dim)) 12%,var(--paper));color:var(--c,var(--ink))}

/* короткая шапка внутренних страниц */
.page-head{position:relative;overflow:hidden;padding:56px 0 44px;border-bottom:1px solid var(--line)}
.page-head .aurora{inset:-60% -6% auto -6%;height:560px;opacity:.5;filter:blur(70px)}
.page-head h1{margin:16px 0 14px;max-width:20ch}
.page-head .lede{max-width:62ch}
.page-head .wrap{position:relative;z-index:1}

/* строка с курсом и датой пересчёта */
.meta-row{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:22px;font-size:13.5px;color:var(--muted)}
.meta-row b{font-family:var(--mono);color:var(--ink);font-weight:700}

/* заметка врезкой */
.callout{border-radius:var(--r);padding:20px 22px;font-size:14.5px;line-height:1.55;
  background:#FDF6E6;border:1px solid #F2E2BC;color:#6E4E05;max-width:74ch}
.callout b{color:#4A340A}
.callout.info{background:#EEF6FD;border-color:#CFE4F6;color:#155679}
.callout.info b{color:#0C3A55}

/* контакт крупно */
.contact{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.contact a,.contact div{display:block;border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;
  transition:transform .25s,box-shadow .25s,border-color .25s}
.contact a:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:transparent}
.contact small{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--dim);margin-bottom:10px}
.contact b{font-family:var(--display);font-size:19px;font-weight:600;letter-spacing:-.02em;display:block}
.contact span{display:block;margin-top:6px;font-size:13.5px;color:var(--muted)}
@media (max-width:860px){.contact{grid-template-columns:1fr}}

/* на телефоне в прайсе оставляем главное: модель и две цены */
@media (max-width:720px){
  table.t th,table.t td{padding:12px 12px}
  .t-hide-sm{display:none}
  table.t td .provider{font-size:11.5px}
}

/* имя вошедшего пользователя в шапке публичного сайта */
.nav-user{color:var(--ink-2);font-weight:600;font-size:13.5px;margin-right:2px}
@media(max-width:820px){.nav-user{display:none}}