:root{
  --accent:#2D7FF9;
  --accent-strong:#1E6BE0;
  --accent-soft:#EAF2FE;
  --ink:#0E1626;
  --ink-2:#46546B;
  --ink-3:#7E8AA0;
  --bg:#FFFFFF;
  --bg-2:#F5F7FB;
  --line:#E7ECF4;
  --line-2:#EFF2F8;
  --card:#FFFFFF;
  --radius:20px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(14,22,38,.05), 0 4px 12px rgba(14,22,38,.04);
  --shadow-md:0 10px 30px rgba(14,22,38,.08), 0 2px 6px rgba(14,22,38,.04);
  --shadow-glow:0 30px 80px rgba(45,127,249,.22);
  --maxw:1180px;
  --ease:cubic-bezier(.16,1,.3,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  margin:0;
  font-family:'Manrope',system-ui,-apple-system,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;line-height:1.1;letter-spacing:-.02em;font-weight:800}
p{margin:0}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
img,svg{display:block}

.shell{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:96px 0}

.skip-link{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}

::selection{background:rgba(45,127,249,.18)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;border-radius:var(--radius-pill);
  padding:12px 22px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(45,127,249,.28)}
.btn-primary:hover{background:var(--accent-strong);transform:translateY(-2px);box-shadow:0 12px 26px rgba(45,127,249,.34)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:16px 30px;font-size:16px}

.pill{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent-soft);color:var(--accent-strong);
  font-weight:700;font-size:13px;padding:7px 14px;border-radius:var(--radius-pill);
  letter-spacing:.01em;border:1px solid rgba(45,127,249,.16);
}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid transparent;transition:border-color .25s,box-shadow .25s}
.site-header.scrolled{border-color:var(--line);box-shadow:0 4px 20px rgba(14,22,38,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.02em}
.brand-mark{flex:none}
.nav{display:flex;gap:30px}
.nav a{color:var(--ink-2);font-weight:600;font-size:15px;position:relative;padding:4px 0;transition:color .18s}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--accent);border-radius:2px;transition:width .25s var(--ease)}
.nav a:hover{color:var(--ink)}
.nav a:hover::after{width:100%}
.header-actions{display:flex;align-items:center;gap:14px}

.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;flex-direction:column;gap:4px;align-items:center;justify-content:center;cursor:pointer}
.burger span{width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s var(--ease),opacity .2s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.mobile-nav{display:none;flex-direction:column;gap:6px;padding:14px 24px 24px;background:#fff;border-bottom:1px solid var(--line)}
.mobile-nav[hidden]{display:none}
.mobile-nav a{padding:12px 14px;border-radius:12px;font-weight:600;color:var(--ink-2)}
.mobile-nav a:hover{background:var(--bg-2)}
.mobile-nav .btn{margin-top:8px;width:100%}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 84px}
.hero-glow{position:absolute;top:-160px;right:-120px;width:680px;height:680px;border-radius:50%;background:radial-gradient(circle,rgba(45,127,249,.16),rgba(45,127,249,0) 62%);pointer-events:none;z-index:0}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-copy h1{font-size:clamp(34px,5vw,58px);margin:20px 0 18px}
.lead{font-size:clamp(16px,1.6vw,19px);color:var(--ink-2);max-width:30em;line-height:1.55}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

.store-badge{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--ink);color:#fff;border-radius:14px;padding:9px 16px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);box-shadow:var(--shadow-sm);
}
.store-badge:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(14,22,38,.16)}
.store-badge:active{transform:translateY(0) scale(.98)}
.store-badge svg{flex:none}
.store-badge span{display:flex;flex-direction:column;line-height:1.1;text-align:left}
.store-badge small{font-size:10px;opacity:.7;font-weight:600}
.store-badge strong{font-size:15px;font-weight:700}

/* ---------- phone / chat mockups ---------- */
.hero-device{position:relative;justify-self:center}
.phone{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:42px;padding:12px;box-shadow:var(--shadow-glow);
  width:300px;
}
.phone::before{content:"";position:absolute;inset:5px;border-radius:38px;border:1px solid rgba(14,22,38,.04);pointer-events:none}
.phone-lg{width:312px}
.phone-sm{width:236px;border-radius:34px;padding:9px;box-shadow:var(--shadow-md)}
.phone-notch{position:absolute;top:11px;left:50%;transform:translateX(-50%);width:84px;height:22px;background:var(--ink);border-radius:0 0 14px 14px;z-index:3}
.phone-sm .phone-notch{width:64px;height:17px}

.chat{background:#F3F6FC;border-radius:32px;overflow:hidden;display:flex;flex-direction:column;height:560px}
.phone-sm .chat{height:430px;border-radius:26px}
.phone.dark .chat{background:#12161F}

.chat-head{display:flex;align-items:center;gap:10px;padding:30px 16px 12px;background:#fff;border-bottom:1px solid var(--line-2)}
.phone-sm .chat-head{padding:26px 13px 10px}
.phone.dark .chat-head{background:#1A1F2B;border-color:rgba(255,255,255,.06)}
.chat-head-meta{display:flex;flex-direction:column;line-height:1.2;flex:1;min-width:0}
.chat-head-meta strong{font-size:14px;font-weight:700}
.phone.dark .chat-head-meta strong{color:#fff}
.status{font-size:11px;color:var(--accent);font-weight:600}
.chat-head-icon{color:var(--ink-3);flex:none}

.avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;font-size:13px;flex:none}
.grad-a{background:linear-gradient(135deg,#3B8BFF,#1E6BE0)}
.grad-b{background:linear-gradient(135deg,#22C39B,#0F9E7B)}
.grad-c{background:linear-gradient(135deg,#FF8A5B,#F0633A)}

.chat-body{flex:1;overflow:hidden;padding:14px 14px 6px;display:flex;flex-direction:column;gap:8px}
.phone-sm .chat-body{padding:12px 11px 6px;gap:6px}
.day{align-self:center;background:rgba(14,22,38,.06);color:var(--ink-2);font-size:11px;font-weight:600;padding:3px 12px;border-radius:var(--radius-pill);margin-bottom:4px}
.phone.dark .day{background:rgba(255,255,255,.08);color:#aab2c4}

.bubble{
  max-width:80%;padding:9px 13px 7px;border-radius:18px;font-size:13.5px;line-height:1.4;position:relative;
  display:flex;flex-direction:column;
}
.phone-sm .bubble{font-size:12.5px;padding:8px 11px 6px}
.bubble .time{font-size:10px;opacity:.6;align-self:flex-end;margin-top:2px;display:inline-flex;gap:3px;align-items:center}
.ticks{color:var(--accent);font-weight:700;letter-spacing:-2px}
.bubble.in{align-self:flex-start;background:#fff;color:var(--ink);border-bottom-left-radius:6px;box-shadow:0 1px 2px rgba(14,22,38,.06)}
.bubble.out{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:6px}
.bubble.out .time{opacity:.85}
.bubble.out .ticks{color:#fff}
.phone.dark .bubble.in{background:#222936;color:#E7EBF2;box-shadow:none}
.sender{font-size:11px;font-weight:800;margin-bottom:1px}
.grad-a-t{color:#1E6BE0}
.grad-c-t{color:#E0521F}

.typing{align-self:flex-start;background:#fff;border-radius:18px;border-bottom-left-radius:6px;padding:11px 14px;display:inline-flex;gap:4px;box-shadow:0 1px 2px rgba(14,22,38,.06)}
.typing span{width:6px;height:6px;border-radius:50%;background:var(--ink-3);opacity:.6}

.chat-input{display:flex;align-items:center;gap:8px;padding:10px 12px;background:#fff;border-top:1px solid var(--line-2)}
.phone.dark .chat-input{background:#1A1F2B;border-color:rgba(255,255,255,.06)}
.ci-field{flex:1;background:var(--bg-2);color:var(--ink-3);font-size:12.5px;padding:8px 14px;border-radius:var(--radius-pill)}
.phone.dark .ci-field{background:#222936;color:#7E8AA0}
.ci-send{width:32px;height:32px;border-radius:50%;background:var(--accent);display:grid;place-items:center;flex:none}

.avatar-stack{display:flex}
.avatar-stack .avatar{width:30px;height:30px;font-size:11px;border:2px solid #fff;margin-right:-9px}
.phone.dark .avatar-stack .avatar{border-color:#1A1F2B}

/* call screen */
.call{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:30px 18px 24px;color:#fff;background:radial-gradient(circle at 50% 28%,#1E2C45,#10141D)}
.call-avatar{width:80px;height:80px;border-radius:50%;font-size:26px;box-shadow:0 0 0 8px rgba(45,127,249,.16)}
.call strong{font-size:17px}
.call-status{font-size:11.5px;color:#9FB0C9}
.call-wave{display:flex;align-items:center;gap:4px;height:30px;margin:8px 0}
.call-wave i{width:4px;height:10px;background:var(--accent);border-radius:2px;animation:wave 1s ease-in-out infinite}
.call-wave i:nth-child(2){animation-delay:.12s}
.call-wave i:nth-child(3){animation-delay:.24s}
.call-wave i:nth-child(4){animation-delay:.36s}
.call-wave i:nth-child(5){animation-delay:.18s}
.call-wave i:nth-child(6){animation-delay:.3s}
.call-wave i:nth-child(7){animation-delay:.06s}
@keyframes wave{0%,100%{height:8px}50%{height:26px}}
.call-actions{display:flex;gap:14px;margin-top:6px}
.ca{width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.12);display:grid;place-items:center}
.ca-end{background:#F0463E}

.enc-badge{
  position:absolute;bottom:34px;left:-26px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-md);border-radius:var(--radius-pill);padding:9px 15px;
  display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:13px;color:var(--ink);
}
.enc-badge svg{color:#0F9E7B}

/* ---------- platform strip ---------- */
.platform-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-2)}
.strip-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:22px 24px;flex-wrap:wrap}
.strip-label{font-weight:700;color:var(--ink-2);font-size:15px}
.strip-platforms{display:flex;flex-wrap:wrap;gap:26px}
.strip-platforms li{display:inline-flex;align-items:center;gap:8px;color:var(--ink-2);font-weight:600;font-size:14px}
.strip-platforms svg{color:var(--ink-3)}

/* ---------- section head ---------- */
.section-head{max-width:620px;margin:0 auto 52px;text-align:center}
.section-head h2{font-size:clamp(28px,3.6vw,42px)}
.section-head p{margin-top:16px;color:var(--ink-2);font-size:17px;line-height:1.55}
.section-head-left{text-align:left;margin-left:0}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s;
  position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(45,127,249,.3)}
.card-ic{width:48px;height:48px;border-radius:14px;background:var(--accent-soft);color:var(--accent-strong);display:grid;place-items:center;margin-bottom:18px}
.card h3{font-size:19px;margin-bottom:9px}
.card p{color:var(--ink-2);font-size:15px;line-height:1.55}
.card-speed{grid-column:span 2;background:linear-gradient(135deg,#0F2A5C,#1E6BE0);border-color:transparent;color:#fff}
.card-speed h3{color:#fff}
.card-speed p{color:rgba(255,255,255,.82)}
.card-speed .card-ic{background:rgba(255,255,255,.16);color:#fff}
.speed-viz{margin-top:20px;display:flex;align-items:center;gap:10px}
.speed-viz .ping{width:10px;height:10px;border-radius:50%;background:#5BE3B3;box-shadow:0 0 0 0 rgba(91,227,179,.6);animation:ping 1.8s ease-out infinite}
.speed-viz .ping:nth-child(2){animation-delay:.3s}
.speed-viz .ping:nth-child(3){animation-delay:.6s}
.speed-viz em{font-style:normal;font-weight:700;font-size:14px;color:#fff;margin-left:6px}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(91,227,179,.55)}70%{box-shadow:0 0 0 10px rgba(91,227,179,0)}100%{box-shadow:0 0 0 0 rgba(91,227,179,0)}}
.card-e2e{background:linear-gradient(160deg,#F0F6FF,#fff)}
.card-files{grid-column:span 1}
.card-stickers{grid-column:span 2}
.react-row{display:flex;gap:6px;margin-top:18px}
.react-row span{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-pill);padding:5px 11px;font-size:14px;font-weight:700;color:var(--ink-2)}
.react-row span:last-child{color:var(--accent-strong);background:var(--accent-soft);border-color:rgba(45,127,249,.18)}

/* ---------- security ---------- */
.security{background:linear-gradient(180deg,#0C1322,#0E1A30);color:#fff;border-radius:0}
.security-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center}
.security-visual{display:grid;place-items:center}
.shield{position:relative;display:grid;place-items:center}
.shield svg{filter:drop-shadow(0 24px 50px rgba(45,127,249,.4));position:relative;z-index:1}
.shield-ring{position:absolute;width:280px;height:280px;border-radius:50%;border:1px solid rgba(91,150,255,.2);box-shadow:0 0 0 30px rgba(45,127,249,.04)}
.shield-ring::after{content:"";position:absolute;inset:34px;border-radius:50%;border:1px dashed rgba(91,150,255,.18);animation:spin 30s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.security-copy h2{font-size:clamp(28px,3.4vw,40px);color:#fff}
.security-copy .lead{color:#A9B7CE;margin-top:16px;max-width:34em}
.check-list{margin-top:30px;display:flex;flex-direction:column;gap:18px}
.check-list li{display:flex;gap:14px;align-items:flex-start}
.check-list svg{flex:none;width:30px;height:30px;padding:6px;border-radius:9px;background:rgba(45,127,249,.18);color:#6FA8FF}
.check-list strong{display:block;color:#fff;font-size:16px;margin-bottom:2px}
.check-list div{color:#A9B7CE;font-size:14.5px;line-height:1.5}

/* ---------- modes ---------- */
.modes-row{display:flex;justify-content:center;align-items:flex-end;gap:34px;flex-wrap:wrap}
.mode{margin:0;display:flex;flex-direction:column;align-items:center;gap:18px}
.mode-mid{transform:translateY(-22px)}
.mode figcaption{font-weight:700;color:var(--ink-2);font-size:15px}

/* ---------- stats ---------- */
.stats{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat .num{display:block;font-size:clamp(30px,4vw,46px);font-weight:800;letter-spacing:-.03em;background:linear-gradient(135deg,var(--accent),var(--accent-strong));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lbl{display:block;margin-top:6px;color:var(--ink-2);font-weight:600;font-size:14.5px}

/* ---------- faq ---------- */
.faq-shell{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.faq{display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:rgba(45,127,249,.4);box-shadow:var(--shadow-sm)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:700;font-size:16.5px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";width:11px;height:11px;border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);transform:rotate(45deg);transition:transform .25s var(--ease);flex:none;margin-top:-4px}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:2px;border-color:var(--accent)}
.faq-a{padding:0 22px 20px;color:var(--ink-2);font-size:15.5px;line-height:1.6;max-width:54ch}

/* ---------- final cta ---------- */
.final-cta{padding-bottom:110px}
.cta-card{position:relative;overflow:hidden;text-align:center;background:linear-gradient(150deg,#10254F,#1E6BE0);border-radius:32px;padding:72px 24px;color:#fff}
.cta-glow{position:absolute;top:-40%;left:50%;transform:translateX(-50%);width:560px;height:560px;background:radial-gradient(circle,rgba(91,150,255,.5),transparent 60%);pointer-events:none}
.cta-card h2{position:relative;font-size:clamp(28px,4vw,44px);color:#fff}
.cta-card p{position:relative;margin:16px auto 0;color:rgba(255,255,255,.86);font-size:18px;max-width:34em}
.cta-buttons{position:relative;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:32px}
.cta-card .btn-primary{background:#fff;color:var(--accent-strong);box-shadow:0 10px 30px rgba(0,0,0,.2)}
.cta-card .btn-primary:hover{background:#F0F6FF}
.cta-card .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.cta-card .btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}

/* ---------- footer ---------- */
.site-footer{background:#0C1322;color:#fff;padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{color:#fff}
.footer-tag{color:#8A98B0;margin:16px 0 20px;max-width:26em;font-size:14.5px}
.socials{display:flex;gap:10px}
.socials a{width:40px;height:40px;border-radius:11px;background:rgba(255,255,255,.06);display:grid;place-items:center;color:#A9B7CE;transition:background .2s,color .2s,transform .2s var(--ease)}
.socials a:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:0}
.footer-col a{display:block;color:#8A98B0;font-size:14.5px;padding:6px 0;transition:color .18s}
.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid rgba(255,255,255,.08);margin-top:48px;padding-top:24px;color:#6E7C95;font-size:13.5px;flex-wrap:wrap;gap:8px}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px)}
.reveal.shown{opacity:1;transform:none;transition:opacity .5s var(--ease),transform .5s var(--ease)}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:40px;text-align:center}
  .hero-copy .lead{margin-left:auto;margin-right:auto}
  .hero-cta{justify-content:center}
  .pill{margin:0 auto}
  .security-grid,.faq-shell{grid-template-columns:1fr;gap:34px}
  .security-visual{order:-1}
  .section-head-left{text-align:center;margin:0 auto 40px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .card-speed,.card-stickers{grid-column:span 2}
}
@media (max-width:768px){
  .section{padding:72px 0}
  .nav{display:none}
  .header-actions .btn-sm{display:none}
  .burger{display:flex}
  .mobile-nav{display:flex}
  .strip-inner{justify-content:center;text-align:center}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
  .mode-mid{transform:none}
}
@media (max-width:560px){
  .shell{padding:0 18px}
  .bento{grid-template-columns:1fr}
  .card-speed,.card-stickers{grid-column:span 1}
  .hero-cta{flex-direction:column;align-items:stretch}
  .store-badge{justify-content:flex-start}
  .enc-badge{left:auto;right:-8px;bottom:24px}
  .phone-lg{width:288px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}