/* ===================== SendTrack — landing =====================
   Design read: B2B SaaS для отделов продаж, Linear-подобный чистый язык,
   нейтральная база + ОДИН синий акцент, сдержанная анимация, реальные скриншоты.
   taste-skill: 1 акцент, 1 радиус-шкала, без эмодзи, без эйрбоу-спама,
   hero помещается в экран, реальные изображения вместо div-мокапов. */
*{box-sizing:border-box}
:root{
  --bg:#ffffff; --surface:#F6F7F9; --ink:#0F141B; --muted:#586173;
  --line:#E6E9EE; --line-2:#EEF1F4;
  --accent:#2563EB; --accent-d:#1D4FD7; --accent-soft:#EAF0FE;
  --band:#0F141B;
  --r:12px; --r-sm:10px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --wrap:1120px;
}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:17px;line-height:1.6;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;letter-spacing:-.02em;line-height:1.1;font-weight:680}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ---- buttons (одна форма, один акцент) ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;
  font-family:inherit;font-weight:600;font-size:15px;border-radius:var(--r-sm);padding:11px 20px;
  border:1px solid transparent;transition:background .15s,border-color .15s,transform .1s,box-shadow .15s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-d)}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:#c9cfd8}
.btn.lg{padding:14px 24px;font-size:16px}
.btn.full{width:100%}

/* ===================== NAV ===================== */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,0);border-bottom:1px solid transparent;transition:background .2s,border-color .2s,box-shadow .2s}
.nav.scrolled{background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(15,20,27,.02)}
.nav-inner{max-width:var(--wrap);margin:0 auto;display:flex;align-items:center;gap:24px;height:66px;padding:0 24px}
.brand{font-size:20px;font-weight:750;letter-spacing:-.02em}
.brand span{color:var(--accent)}
.nav-links{display:flex;gap:26px;margin-left:22px;flex:1}
.nav-links a{font-size:15px;color:var(--muted);font-weight:500}
.nav-links a:hover{color:var(--ink)}
.nav-cta{display:flex;gap:10px;align-items:center}
.nav-burger{display:none;background:none;border:0;color:var(--ink);cursor:pointer;padding:4px}

/* ===================== HERO ===================== */
.hero{padding:64px 0 72px}
.hero-inner{max-width:var(--wrap);margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1.05fr 1.1fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(34px,4.6vw,52px);font-weight:720;letter-spacing:-.03em}
.hero .lead{font-size:19px;color:var(--muted);max-width:480px;margin:20px 0 30px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

/* единая рамка окна для всех скриншотов продукта */
.shot{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:0 24px 60px -20px rgba(15,30,60,.22)}
.shot-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:var(--surface);border-bottom:1px solid var(--line-2)}
.shot-bar i{width:11px;height:11px;border-radius:50%;background:#d7dbe1}
.shot img{width:100%;display:block}
.hero-shot{position:relative}

/* плавающие карточки-уведомления поверх скриншота */
.float-card{position:absolute;background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:0 16px 40px -12px rgba(15,30,60,.28);opacity:0;transition:opacity .6s ease}
.float-card.in{opacity:1}
.fc-open{left:-26px;bottom:34px;display:flex;align-items:center;gap:11px;padding:12px 15px;max-width:280px;
  animation:floatA 6s ease-in-out infinite}
.fc-ic{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.fc-ic svg{width:19px;height:19px}
.fc-ic.tg{background:#e8f4fc;color:#26A5E4}
.fc-body b{display:block;font-size:13.5px;font-weight:660;color:var(--ink);line-height:1.3}
.fc-body span{font-size:12.5px;color:var(--muted)}
.fc-chip{right:-18px;top:64px;display:flex;align-items:center;gap:8px;padding:9px 14px;font-size:13px;font-weight:600;color:var(--ink);
  animation:floatB 5.2s ease-in-out infinite}
.fc-chip b{font-weight:700;color:var(--accent)}
.fc-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 auto}
@keyframes floatA{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes floatB{0%,100%{transform:translateY(0)}50%{transform:translateY(7px)}}

/* ===================== TRUST (интеграции — пилюли: лого + название) ===================== */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px;padding:22px 24px}
.trust-lbl{font-size:14px;color:var(--muted);margin-right:6px}
.int{display:inline-flex;align-items:center;gap:9px;padding:8px 15px;background:#fff;border:1px solid var(--line);
  border-radius:999px;transition:transform .15s,box-shadow .15s,border-color .15s}
.int:hover{transform:translateY(-2px);box-shadow:0 10px 22px -12px rgba(15,30,60,.22);border-color:#d6dbe2}
.int em{font-style:normal;font-weight:600;font-size:14.5px;color:var(--ink);letter-spacing:-.01em}
.int-ico{height:20px;width:auto;display:block;flex:0 0 auto}
.int-ico.sq{width:20px;height:20px;border-radius:5px}
.ico-amo{height:15px}

/* ===================== SECTIONS ===================== */
.section{padding:88px 0}
.section.features,.section.analytics,.section.lead{background:var(--surface)}
.section h2{font-size:clamp(27px,3.2vw,36px);font-weight:700;text-align:center;letter-spacing:-.025em}
.section .sub{text-align:center;color:var(--muted);font-size:18px;max-width:600px;margin:14px auto 0}
.section .sub.left{text-align:left;margin-left:0}
.section h2+.sub{margin-bottom:52px}

/* ---- how: пронумерованная последовательность ---- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.step-n{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:9px;
  background:var(--accent-soft);color:var(--accent);font-weight:700;font-size:16px;margin-bottom:16px}
.step h3{font-size:20px;margin-bottom:8px;font-weight:680}
.step p{color:var(--muted);margin:0;font-size:16px}

/* ---- features: структурная сетка с разделителями, без карточек-теней ---- */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.feat{background:var(--surface);padding:24px 22px;transition:background .18s}
.feat:hover{background:#fff}
.feat::before{content:"";display:block;width:20px;height:3px;border-radius:2px;background:var(--accent);margin-bottom:16px}
.feat h3{font-size:16.5px;font-weight:660;margin-bottom:7px;letter-spacing:-.01em}
.feat p{color:var(--muted);font-size:15px;margin:0;line-height:1.55}

/* ---- modes: два реальных скриншота одинаковой высоты ---- */
.modes-two{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.mode{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:transform .18s,box-shadow .18s}
.mode:hover{transform:translateY(-3px);box-shadow:0 20px 44px -20px rgba(15,30,60,.24)}
.mode img{width:100%;aspect-ratio:16/10;object-fit:cover;object-position:top center;border-bottom:1px solid var(--line);background:#eef0f2}
.mode figcaption{padding:18px 20px;color:var(--muted);font-size:15px}
.mode figcaption b{display:block;color:var(--ink);font-size:17px;font-weight:660;margin-bottom:4px}

/* ---- analytics: текст + реальный скриншот ---- */
.analytics-split{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:center}
.analytics-split h2{text-align:left}
.ticks{list-style:none;padding:0;margin:22px 0 0}
.ticks li{position:relative;padding:9px 0 9px 30px;font-size:16.5px;color:var(--ink)}
.ticks li::before{content:"";position:absolute;left:0;top:14px;width:12px;height:12px;border-radius:4px;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.ticks.sm li{font-size:15px;padding:7px 0 7px 26px}
.ticks.sm li::before{top:12px;width:9px;height:9px;box-shadow:0 0 0 3px var(--accent-soft)}
.an-shot{margin:0}
.an-shot img{border-radius:var(--r);border:1px solid var(--line);box-shadow:0 24px 60px -24px rgba(15,30,60,.2)}

/* ---- pricing ---- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.tier{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px 26px;display:flex;flex-direction:column;position:relative}
.tier{transition:transform .18s,box-shadow .18s}
.tier:hover{transform:translateY(-3px);box-shadow:0 22px 50px -26px rgba(15,30,60,.28)}
.tier.best{border-color:var(--accent);box-shadow:0 20px 50px -24px rgba(37,99,235,.4)}
.tier.best:hover{box-shadow:0 26px 56px -24px rgba(37,99,235,.5)}
.tier-flag{position:absolute;top:-12px;left:26px;background:var(--accent);color:#fff;font-size:12px;font-weight:650;padding:4px 12px;border-radius:20px}
.tier-name{font-size:15px;font-weight:650;color:var(--muted)}
.tier-price{font-size:34px;font-weight:720;letter-spacing:-.02em;margin:6px 0 18px}
.tier-price span{font-size:15px;color:var(--muted);font-weight:500}
.tier .ticks{flex:1;margin:0 0 22px}

/* ---- lead + signup: label ABOVE input (taste 4.6) ---- */
.lead-wrap{display:grid;grid-template-columns:1fr 1.05fr;gap:52px;align-items:center;max-width:960px}
.lead-text h2,.su-text h2{text-align:left;font-size:clamp(25px,3vw,32px)}
.lead-form,.su-form{display:flex;flex-direction:column;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px}
.field{display:flex;flex-direction:column;gap:6px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field label{font-size:13px;font-weight:600;color:var(--muted)}
.field input,.field textarea{width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:var(--r-sm);
  font-family:inherit;font-size:15px;color:var(--ink);background:#fff;transition:border-color .15s,box-shadow .15s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.field textarea{resize:vertical}
.form-note{font-size:14px;color:var(--muted);text-align:center;margin:2px 0 0}
.form-note.ok{color:#1a8a4a;font-weight:600}.form-note.err{color:#dc2626}
.form-note a{color:var(--accent);font-weight:600}
.signup-split{display:grid;grid-template-columns:1fr 420px;gap:52px;align-items:center}

/* ---- faq ---- */
.faq-wrap{max-width:760px}
.faq-list{margin-top:8px}
.faq-list details{border-top:1px solid var(--line);padding:2px 0}
.faq-list details:last-child{border-bottom:1px solid var(--line)}
.faq-list summary{cursor:pointer;list-style:none;font-weight:640;font-size:18px;padding:18px 34px 18px 0;position:relative}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;right:2px;top:15px;color:var(--accent);font-size:22px;font-weight:400}
.faq-list details[open] summary::after{content:"−"}
.faq-list details p{color:var(--muted);margin:0 0 18px;font-size:16px}

/* ---- final (единственный тёмный «момент») ---- */
.section.final{background:var(--band);color:#fff}
.final-wrap{text-align:center;max-width:640px}
.final h2{color:#fff}
.final .sub{color:#aab3c2;margin-bottom:30px}

/* ---- footer ---- */
.footer{background:var(--band);color:#8b95a5;padding:52px 0 26px;border-top:1px solid rgba(255,255,255,.06)}
.foot-inner{display:grid;grid-template-columns:1.3fr 2fr;gap:36px}
.foot-brand .brand{color:#fff}
.foot-brand p{margin:12px 0 0;font-size:14px;max-width:260px;color:#727d8d}
.foot-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.foot-cols h4{font-size:14px;color:#c3ccd8;margin:0 0 12px;font-weight:650}
.foot-cols a{display:block;font-size:14px;padding:5px 0;color:#8b95a5}
.foot-cols a:hover{color:#fff}
.foot-legal{border-top:1px solid rgba(255,255,255,.08);margin-top:34px;padding-top:22px;font-size:13px;color:#69727f}

/* ===================== MOTION (сдержанно) ===================== */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}.float-card{opacity:1}*{transition:none!important;animation:none!important}}

/* ===================== RESPONSIVE ===================== */
@media (max-width:940px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr;gap:22px}
  .modes-two,.analytics-split,.lead-wrap,.signup-split,.tiers{grid-template-columns:1fr;gap:28px}
  .signup-split{grid-template-columns:1fr}
  .tiers{max-width:420px;margin:0 auto}
  .analytics-split h2,.lead-text h2,.su-text h2{text-align:center}
  .section .sub.left{text-align:center}
  .ticks{max-width:420px;margin-left:auto;margin-right:auto}
}
@media (max-width:640px){
  .nav-links,.nav-cta{display:none}
  .nav-burger{display:block;margin-left:auto}
  .nav.open .nav-inner{flex-wrap:wrap;height:auto;padding-bottom:14px}
  .nav.open .nav-links{display:flex;flex-direction:column;width:100%;gap:12px;order:3;padding-top:8px}
  .nav.open .nav-cta{display:flex;width:100%;order:4}
  .section{padding:60px 0}
  .hero{padding:40px 0 56px}
  .feat-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  /* плавающие карточки — внутрь границ экрана */
  .fc-open{left:6px;right:auto;bottom:12px;max-width:230px;padding:10px 13px}
  .fc-open .fc-body b{font-size:12.5px}
  .fc-chip{right:6px;top:12px}
}