:root{
  /* акцентные цвета — общие для всех тем */
  --accent:#4d8dff; --accent-soft:rgba(77,141,255,.14); --accent-brd:rgba(77,141,255,.28);
  --accent-2:#22d3ee; --cyan:#22d3ee; --green:#7ee787; --red:#ff6b7a;
  --font:'Manrope',-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --head:'Unbounded','Manrope',sans-serif;
  --radius:18px; --maxw:1160px;
}
/* ===== ТЕМЫ ===== */
:root,[data-theme="blue"]{
  --bg:#0a0d16; --panel:#12161f; --panel2:#171c28; --deep:#06101f;
  --text:#eef1f6; --muted:#98a1b5; --faint:#5c6478;
  --border:rgba(255,255,255,.07); --border2:rgba(255,255,255,.12);
  --surface-rgb:18,22,31;
  --glow-1:rgba(77,141,255,.18); --glow-2:rgba(34,211,238,.10);
}
[data-theme="dark"]{
  --bg:#121213; --panel:#1b1b1d; --panel2:#212123; --deep:#161617;
  --text:#f3f2ef; --muted:#a9a9ae; --faint:#6f6f76;
  --border:rgba(255,255,255,.06); --border2:rgba(255,255,255,.10);
  --surface-rgb:27,27,29;
  --glow-1:rgba(77,141,255,.10); --glow-2:rgba(34,211,238,.06);
}
[data-theme="light"]{
  --bg:#f1f2f6; --panel:#ffffff; --panel2:#f5f6fa; --deep:#eaecf1;
  --text:#14151c; --muted:#565b6c; --faint:#8a8fa0;
  --border:rgba(20,26,50,.10); --border2:rgba(20,26,50,.16);
  --surface-rgb:255,255,255;
  --glow-1:rgba(77,141,255,.10); --glow-2:rgba(34,211,238,.08);
}
/* нативные контролы (в т.ч. выпадающий список select) следуют теме */
:root,[data-theme="blue"],[data-theme="dark"]{color-scheme:dark}
[data-theme="light"]{color-scheme:light}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background-color:var(--bg);color:var(--text);font-family:var(--font);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;transition:background-color .4s,color .4s}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(900px 500px at 15% -5%,var(--glow-1),transparent 60%),
    radial-gradient(800px 500px at 90% 10%,var(--glow-2),transparent 55%),
    radial-gradient(700px 600px at 50% 110%,var(--glow-1),transparent 60%);}
a{color:inherit;text-decoration:none}
img,svg{display:block}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.accent-text{color:var(--accent)}

/* ---- section heads ---- */
.eyebrow{display:inline-block;font-family:var(--head);font-weight:600;font-size:.72rem;
  letter-spacing:.22em;color:var(--accent);text-transform:uppercase;margin-bottom:16px}
.sec-title{font-family:var(--head);font-weight:700;font-size:clamp(1.6rem,3.4vw,2.5rem);
  line-height:1.18;letter-spacing:-.01em;margin-bottom:18px}
section{padding:96px 0}
.sec-head{max-width:720px;margin-bottom:48px}
.sec-head p{color:var(--muted);font-size:1.02rem}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:.95rem;
  padding:13px 22px;border-radius:12px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s}
.btn svg{width:16px;height:16px}
.btn--primary{background:var(--accent);color:#04122e;box-shadow:0 10px 30px -10px rgba(77,141,255,.7)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -12px rgba(77,141,255,.85)}
.btn--ghost{background:rgba(255,255,255,.03);border-color:var(--border2);color:var(--text)}
.btn--ghost:hover{background:rgba(255,255,255,.07);transform:translateY(-2px)}

/* ---- header (плавающий pill) ---- */
.site-header{position:sticky;top:14px;z-index:50;margin:14px auto 0;max-width:1280px;width:calc(100% - 32px);
  border-radius:26px;border:1px solid var(--border);backdrop-filter:blur(14px);
  background-color:rgba(var(--surface-rgb),.72);box-shadow:0 20px 60px rgba(0,0,0,.28);
  transition:background-color .4s,border-color .4s,box-shadow .4s,margin-top .3s}
.site-header.is-scrolled{margin-top:8px;backdrop-filter:blur(18px);
  box-shadow:0 20px 60px rgba(0,0,0,.3),0 12px 40px rgba(0,0,0,.18)}
.header__inner{position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:12px;height:72px;padding:0 18px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-width:0}
.brand__mark{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(155deg,var(--accent-soft),transparent);border:1px solid var(--border);
  overflow:hidden;position:relative;flex-shrink:0;color:var(--accent)}
.brand__mark svg{width:24px;height:24px;position:relative;z-index:1}
.brand__txt{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand__txt b{font-family:var(--head);font-weight:700;font-size:18px;letter-spacing:.2px;white-space:nowrap;color:var(--text)}
.brand__txt span{font-size:9.5px;color:var(--faint);text-transform:uppercase;letter-spacing:.45px;
  font-family:var(--font);font-weight:500;white-space:nowrap}
.nav{display:none;align-items:center;justify-content:center;gap:2px;flex:1 1 auto;padding:0 8px}
.nav a{position:relative;display:inline-flex;align-items:center;padding:8px 12px;font-family:var(--head);
  font-size:13px;font-weight:600;color:var(--muted);border-radius:999px;white-space:nowrap;
  transition:color .25s,background .25s}
.nav a::before{content:"";position:absolute;inset:0;border-radius:999px;background:var(--panel2);
  opacity:0;transform:scale(.85);transition:opacity .25s,transform .25s;z-index:-1}
.nav a:hover{color:var(--text)}
.nav a:hover::before{opacity:1;transform:scale(1)}
.header__actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.nav__cabinet{display:inline-flex;align-items:center;justify-content:center;padding:9px 16px;
  font-family:var(--head);font-size:12.5px;font-weight:700;letter-spacing:.03em;color:#06101f;
  border-radius:999px;border:0;cursor:pointer;white-space:nowrap;
  background:linear-gradient(105deg,var(--accent) 0%,var(--accent-2) 100%);
  box-shadow:0 4px 16px rgba(77,141,255,.22),inset 0 1px 0 rgba(255,255,255,.22);
  transition:transform .28s cubic-bezier(.34,1.2,.64,1),box-shadow .28s,filter .28s}
.nav__cabinet:hover{transform:translateY(-2px) scale(1.02);filter:brightness(1.04);
  box-shadow:0 10px 26px rgba(77,141,255,.32),inset 0 1px 0 rgba(255,255,255,.28)}
.theme-switch{display:inline-flex;align-items:center;gap:4px;padding:4px;border-radius:999px;
  border:1px solid var(--border);background:var(--panel);flex-shrink:0}
.theme-switch__btn{width:28px;height:28px;border-radius:50%;border:0;background:transparent;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;transition:background .2s}
.theme-switch__btn.active{background:var(--panel2)}
.theme-swatch{width:14px;height:14px;border-radius:50%;border:1px solid rgba(255,255,255,.18)}
.theme-switch__btn.active .theme-swatch{box-shadow:0 0 0 2px var(--panel),0 0 0 3px var(--accent)}
.theme-swatch--blue{background:linear-gradient(135deg,#4d8dff,#22d3ee);border-color:rgba(77,141,255,.45)}
.theme-swatch--light{background:linear-gradient(135deg,#fff,#d8dbe4)}
.theme-swatch--dark{background:linear-gradient(135deg,#2b2b2e,#121213)}
.burger{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:12px;border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;
  transition:color .2s,border-color .2s,background .2s}
.burger[aria-expanded="true"]{color:var(--accent);border-color:var(--accent-brd);background:var(--accent-soft)}
.burger svg{transition:transform .38s cubic-bezier(.22,1,.36,1)}
.burger[aria-expanded="true"] svg{transform:rotate(90deg)}
@media(min-width:1100px){.nav{display:flex}.burger{display:none}}
@media(min-width:1100px) and (max-width:1360px){.brand__txt span{display:none}}
/* широкие экраны: меню строго по центру шапки (лого слева, кнопка+темы справа) */
@media(min-width:1320px){
  .header__inner{display:grid;grid-template-columns:1fr auto 1fr}
  .brand{justify-self:start}
  .nav{justify-self:center}
  .header__actions{justify-self:end}
}
@media(max-width:1099px){
  .nav{display:flex;position:absolute;top:calc(100% + 8px);left:10px;right:10px;flex-direction:column;
    align-items:stretch;padding:12px;gap:4px;background:rgba(var(--surface-rgb),.97);border:1px solid var(--border);
    border-radius:20px;box-shadow:0 20px 60px rgba(0,0,0,.4);backdrop-filter:blur(16px);
    opacity:0;visibility:hidden;pointer-events:none;transform:scale(.95);transform-origin:top right;
    transition:opacity .3s,transform .3s,visibility .3s}
  .nav.open{opacity:1;visibility:visible;pointer-events:auto;transform:scale(1)}
  .nav a{width:100%;padding:12px 16px;font-size:14px}
  .brand__txt span{display:none}
}

/* ---- hero ---- */
.hero{text-align:center;padding-top:70px;padding-bottom:60px}
.hero__badge{display:inline-block;font-size:.82rem;color:var(--muted);font-weight:500;
  padding:8px 16px;border-radius:999px;border:1px solid var(--border2);
  background:rgba(255,255,255,.02);margin-bottom:26px}
.hero__title{font-family:var(--head);font-weight:700;font-size:clamp(2rem,5.4vw,3.6rem);
  line-height:1.12;letter-spacing:-.02em;margin-bottom:22px}
.hero__desc{max-width:620px;margin:0 auto 32px;color:var(--muted);font-size:1.08rem}
.hero__cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* chat mock */
.hero__frame{margin:56px auto 0;max-width:520px}
.chat-mock{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--border2);
  border-radius:22px;overflow:hidden;box-shadow:0 40px 90px -40px rgba(0,0,0,.9);text-align:left}
.chat-mock__head{display:flex;align-items:center;gap:8px;padding:15px 18px;border-bottom:1px solid var(--border)}
.dot{width:11px;height:11px;border-radius:50%}
.dot--wa{background:#25d366}.dot--tg{background:#2aabee}.dot--max{background:#7c5cff}
.chat-mock__title{margin-left:8px;font-size:.85rem;font-weight:600;color:var(--muted)}
.chat-mock__body{padding:20px 18px;display:flex;flex-direction:column;gap:12px;
  background:radial-gradient(500px 300px at 80% 0,rgba(77,141,255,.06),transparent)}
.bubble{max-width:82%;padding:12px 15px;border-radius:16px;font-size:.9rem;line-height:1.45;
  opacity:0;transform:translateY(14px);animation:bubbleIn .6s ease forwards}
.bubble--in{background:var(--panel2);border:1px solid var(--border);border-bottom-left-radius:5px;align-self:flex-start}
.bubble--out{background:var(--accent);color:#04122e;font-weight:500;border-bottom-right-radius:5px;align-self:flex-end}
.delay1{animation-delay:.5s}.delay2{animation-delay:1s}
@keyframes bubbleIn{to{opacity:1;transform:translateY(0)}}

/* ---- stats ---- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:80px}
.stat{background:rgba(255,255,255,.02);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 22px;text-align:center}
.stat__num{display:block;font-family:var(--head);font-weight:700;font-size:2.1rem;
  color:var(--text);margin-bottom:6px;background:linear-gradient(135deg,var(--text),var(--accent));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat__label{font-size:.86rem;color:var(--muted)}

/* ---- about (две колонки: текст | список) ---- */
.about__grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:start}
.about__text{color:var(--muted);font-size:1rem;display:flex;flex-direction:column;gap:18px}
.about__points{list-style:none;display:flex;flex-direction:column;gap:26px}
.about__points li{display:flex;gap:16px}
.about__num{font-family:var(--head);font-weight:700;font-size:13px;color:var(--accent-2);
  flex-shrink:0;padding-top:2px}
.about__points h4{font-size:16px;font-weight:700;margin-bottom:4px;color:var(--text)}
.about__points p{color:var(--muted);font-size:14.5px}
@media(max-width:1080px){.about__grid{grid-template-columns:1fr;gap:40px}}

/* ---- services ---- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--border);
  border-radius:var(--radius);padding:28px 26px;transition:transform .25s,border-color .25s,box-shadow .25s}
.card:hover{transform:translateY(-6px);border-color:var(--accent-brd);box-shadow:0 30px 60px -30px rgba(77,141,255,.4)}
.card__icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--accent-soft);border:1px solid var(--accent-brd);color:var(--accent)}
.card__icon svg{width:22px;height:22px}
.card h3{font-size:1.12rem;font-weight:700;margin-bottom:11px}
.card p{color:var(--muted);font-size:.94rem}

/* ---- messengers ---- */
.msg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.msg{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--border);
  border-radius:var(--radius);padding:30px 26px;transition:transform .25s,border-color .25s}
.msg:hover{transform:translateY(-6px);border-color:var(--accent-brd)}
.msg__logo{width:58px;height:58px;border-radius:16px;display:grid;place-items:center;margin-bottom:20px;
  overflow:hidden;box-shadow:0 10px 28px -12px rgba(0,0,0,.6)}
.msg__logo.wa{background:#fff}
.msg__logo svg{width:100%;height:100%}
.msg h3{font-size:1.2rem;font-weight:700;margin-bottom:11px}
.msg p{color:var(--muted);font-size:.94rem;margin-bottom:16px}
.msg__link{font-size:.9rem;font-weight:600;color:var(--accent)}

/* ---- why / steps ---- */
.list-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{background:rgba(255,255,255,.02);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 24px;position:relative;transition:transform .25s,border-color .25s}
.step:hover{transform:translateY(-5px);border-color:var(--accent-brd)}
.step__no{font-family:var(--head);font-weight:800;font-size:2rem;line-height:1;
  color:transparent;-webkit-text-stroke:1.5px var(--accent-brd);margin-bottom:16px}
.step h3{font-size:1.08rem;font-weight:700;margin-bottom:10px}
.step p{color:var(--muted);font-size:.92rem}

/* ---- pricing ---- */
.toggle{display:inline-flex;gap:4px;padding:5px;border-radius:14px;background:rgba(255,255,255,.03);
  border:1px solid var(--border);margin-bottom:44px}
.toggle button{border:0;background:none;color:var(--muted);font-weight:600;font-size:.88rem;font-family:var(--font);
  padding:10px 18px;border-radius:10px;cursor:pointer;transition:.2s;display:flex;align-items:center;gap:7px}
.toggle button.active{background:var(--accent);color:#04122e}
.toggle .save{font-size:.72rem;color:var(--green);font-weight:700}
.toggle button.active .save{color:#04122e}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.plans--single{grid-template-columns:minmax(0,420px);justify-content:center}
.plan{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--border);
  border-radius:20px;padding:32px 28px;display:flex;flex-direction:column;transition:transform .25s}
.plan:hover{transform:translateY(-6px)}
.plan--pop{border-color:var(--accent);box-shadow:0 30px 70px -30px rgba(77,141,255,.5)}
.plan__tag{font-family:var(--head);font-weight:600;font-size:.68rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.plan--pop .plan__tag{color:var(--accent)}
.plan__name{font-family:var(--head);font-weight:700;font-size:1.5rem;margin-bottom:14px}
.plan__price{font-size:1.35rem;font-weight:800;margin-bottom:24px}
.plan__price small{display:block;font-size:.82rem;font-weight:500;color:var(--muted);margin-top:4px}
.plan ul{list-style:none;display:flex;flex-direction:column;gap:12px;margin-bottom:28px;flex:1}
.plan li{font-size:.92rem;color:var(--muted);display:flex;gap:10px;align-items:flex-start}
.plan li::before{content:"—";color:var(--accent);flex-shrink:0}
.plan .btn{width:100%;justify-content:center}

/* ---- CTA ---- */
.cta{text-align:center}
.cta__box{background:linear-gradient(135deg,rgba(77,141,255,.16),rgba(34,211,238,.08));
  border:1px solid var(--accent-brd);border-radius:26px;padding:64px 32px;
  max-width:820px;margin:0 auto}
.cta h2{font-family:var(--head);font-weight:700;font-size:clamp(1.7rem,4vw,2.6rem);line-height:1.15;margin-bottom:16px}
.cta p{color:var(--muted);font-size:1.05rem;max-width:520px;margin:0 auto 30px}

/* ---- footer ---- */
footer{border-top:1px solid var(--border);padding:64px 0 32px;background:rgba(6,16,31,.4)}
.foot-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1.2fr;gap:32px;margin-bottom:44px}
.foot__brand p{color:var(--muted);font-size:.92rem;margin-top:14px;max-width:280px}
.foot h4{font-family:var(--head);font-weight:600;font-size:.7rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--faint);margin-bottom:16px}
.foot ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.foot a,.foot li{color:var(--muted);font-size:.92rem;transition:color .2s}
.foot a:hover{color:var(--text)}
.foot-bottom{border-top:1px solid var(--border);padding-top:26px;display:flex;
  justify-content:space-between;flex-wrap:wrap;gap:8px;color:var(--faint);font-size:.84rem}
.foot-bottom span{display:block}

/* ---- reveal ---- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ---- responsive ---- */
@media(max-width:960px){
  .nav__links{display:none}
  .stats{grid-template-columns:repeat(2,1fr)}
  .about__grid,.grid-3,.msg-grid,.list-grid,.plans{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr 1fr}
  .burger{display:flex}
}
@media(max-width:640px){
  section{padding:70px 0}
  .stats,.about__grid,.grid-3,.msg-grid,.list-grid,.plans,.foot-grid{grid-template-columns:1fr}
  .nav__login{display:none}
}

/* ===== LEAD FORM (backend) ===== */
.lead-form{max-width:520px;margin:26px auto 0;display:grid;gap:12px;text-align:left}
.lead-form .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.lead-form label{display:block;font-size:.82rem;color:var(--muted);margin-bottom:6px;font-weight:500}
.lead-form input,.lead-form textarea,.lead-form select{
  width:100%;font-family:var(--font);font-size:.95rem;color:var(--text);
  background-color:var(--panel2);border:1px solid var(--border2);border-radius:12px;
  padding:12px 14px;transition:border-color .2s,background-color .2s;outline:none}
.lead-form input:focus,.lead-form textarea:focus,.lead-form select:focus{
  border-color:var(--accent);background-color:var(--panel)}
.lead-form textarea{resize:vertical;min-height:84px}
.lead-form input::placeholder,.lead-form textarea::placeholder{color:var(--faint)}
/* select: убираем нативную «белую» отрисовку, своя стрелка, тёмные опции */
.lead-form select{appearance:none;-webkit-appearance:none;-moz-appearance:none;cursor:pointer;
  padding-right:40px;
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),
    linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 20px) 55%,calc(100% - 14px) 55%;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.lead-form select option{background:var(--panel);color:var(--text)}
.lead-form .btn{width:100%;justify-content:center;margin-top:4px}
.lead-form .btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}
.lead-note{font-size:.78rem;color:var(--faint);text-align:center}
.lead-note a{color:var(--muted);text-decoration:underline}
.form-msg{font-size:.9rem;text-align:center;min-height:1.2em;font-weight:500}
.form-msg.ok{color:var(--green)}
.form-msg.err{color:var(--red)}
@media(max-width:640px){.lead-form .row{grid-template-columns:1fr}}

/* ===== небольшой апдейт: доступность и мягкая полировка ===== */
section[id], #contacts{scroll-margin-top:96px}       /* якоря не прячутся под липким хедером */
a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible, .theme-switch__btn:focus-visible{
  outline:2px solid var(--accent); outline-offset:3px; border-radius:8px}
.btn:active{transform:translateY(0) scale(.98)}
.nav__cabinet:active{transform:translateY(0) scale(.98)}
.card, .msg, .step, .plan{transition:transform .28s cubic-bezier(.22,1,.36,1),border-color .28s,box-shadow .28s}
.reveal{transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1 !important;transform:none !important;transition:none}
  *{scroll-behavior:auto}
}