:root{--bg:#07090d;--bg2:#0d1118;--card:#101722;--line:#243248;--txt:#f7f9fc;--muted:#a9b4c5;--blue:#5aa7ff;--blue2:#8ec5ff;--gold:#d9b36c}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 70% 8%,#16273b 0,#090d13 32%,#07090d 60%);color:var(--txt);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",sans-serif;line-height:1.55}a{color:inherit;text-decoration:none}.wrap{width:min(1160px,92vw);margin:auto}.nav{display:flex;align-items:center;justify-content:space-between;padding:22px 0;gap:20px}.brand{font-weight:800;letter-spacing:-.02em}.brand span{color:var(--blue)}.navlinks{display:flex;align-items:center;gap:18px;color:#d7deea;font-size:14px}.lang{background:#101722;border:1px solid var(--line);border-radius:999px;padding:8px 12px}.hero{min-height:760px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:56px;padding:66px 0 100px}.eyebrow{font-size:13px;text-transform:uppercase;letter-spacing:.16em;color:var(--blue2);font-weight:700}.hero h1{font-size:clamp(50px,7vw,92px);line-height:.96;letter-spacing:-.055em;margin:16px 0 24px;max-width:760px}.hero h1 em{font-style:normal;color:var(--blue)}.hero p{font-size:20px;color:var(--muted);max-width:670px}.cta{display:inline-flex;align-items:center;justify-content:center;background:#fff;color:#05070b;font-weight:800;border-radius:14px;padding:15px 22px;margin-top:22px;box-shadow:0 12px 45px rgba(90,167,255,.16)}.subcta{margin-left:14px;color:#c6d6ea}.phone-stage{position:relative;display:flex;justify-content:center}.vault-ring{position:absolute;width:520px;height:520px;border:1px solid #37506c;border-radius:50%;top:35px;right:-65px;box-shadow:inset 0 0 0 32px #0d141f,inset 0 0 0 34px #31465e,0 0 100px rgba(52,113,180,.18)}.vault-ring:before,.vault-ring:after{content:"";position:absolute;left:50%;top:50%;background:#2b4059;transform:translate(-50%,-50%)}.vault-ring:before{width:340px;height:20px;border-radius:12px}.vault-ring:after{width:20px;height:340px;border-radius:12px}.phone{position:relative;width:min(335px,72vw);border:10px solid #1b2028;border-radius:48px;overflow:hidden;box-shadow:0 30px 90px rgba(0,0,0,.55),0 0 60px rgba(90,167,255,.14);background:#000}.phone img{display:block;width:100%;height:auto}.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:12px auto 94px}.trust div{border:1px solid var(--line);background:linear-gradient(180deg,#111923,#0d131c);padding:22px;border-radius:20px;text-align:center}.trust b{display:block;font-size:15px}.trust span{display:block;font-size:13px;color:var(--muted);margin-top:4px}.section{padding:92px 0}.section h2{font-size:clamp(38px,5vw,64px);letter-spacing:-.045em;line-height:1.05;margin:0 0 18px}.lead{font-size:19px;color:var(--muted);max-width:760px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}.card{background:linear-gradient(180deg,#111923,#0b1017);border:1px solid var(--line);border-radius:28px;padding:24px;overflow:hidden}.card h3{font-size:24px;margin:18px 0 8px}.card p{color:var(--muted);margin:0}.shot{height:420px;display:flex;justify-content:center;align-items:flex-start;overflow:hidden;border-radius:22px;background:#080b10;padding:16px}.shot img{height:100%;width:auto;border-radius:24px;box-shadow:0 18px 44px rgba(0,0,0,.45)}.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}.bullets{display:grid;gap:14px;margin-top:30px}.bullet{padding:16px 18px;border:1px solid var(--line);border-radius:16px;background:#0d141d}.bullet b{display:block}.bullet span{color:var(--muted);font-size:14px}.aes{background:linear-gradient(135deg,#101a28,#0a0f17 62%);border:1px solid #2c4667;border-radius:32px;padding:44px}.aes .big{font-size:72px;font-weight:900;letter-spacing:-.06em;color:var(--blue)}.final{padding:110px 0 130px;text-align:center}.final h2{font-size:clamp(42px,6vw,74px);margin-bottom:16px}.footer{border-top:1px solid #1e2836;padding:28px 0 40px;color:#8390a3;font-size:13px}.footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.article{width:min(820px,92vw);margin:70px auto 120px}.article h1{font-size:clamp(46px,7vw,76px);letter-spacing:-.05em;line-height:1}.article h2{margin-top:54px;font-size:32px}.article p,.article li{color:#c6cfdd;font-size:18px}.analogy{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:30px 0}.analogy div{border:1px solid var(--line);background:#0e151f;border-radius:20px;padding:22px}.analogy b{display:block;font-size:20px;margin-bottom:7px}.back{display:inline-block;margin-top:40px;color:var(--blue2)}
@media(max-width:850px){.navlinks a:not(.lang){display:none}.hero{grid-template-columns:1fr;padding-top:35px}.hero h1{font-size:56px}.phone-stage{margin-top:24px}.vault-ring{width:360px;height:360px;right:0}.trust{grid-template-columns:1fr 1fr}.cards{grid-template-columns:1fr}.shot{height:520px}.split{grid-template-columns:1fr}.section{padding:68px 0}.analogy{grid-template-columns:1fr}}
@media(max-width:520px){.hero h1{font-size:47px}.hero p{font-size:18px}.subcta{display:block;margin:18px 0 0}.trust{grid-template-columns:1fr}.shot{height:430px}.aes{padding:28px}.aes .big{font-size:58px}}

/* 002: mobile-first performance and typography refinements */
img{max-width:100%}
@media(max-width:850px){
  .hero{min-height:auto;gap:28px;padding:28px 0 64px}
  .hero h1{font-size:50px;line-height:.98;margin:14px 0 20px}
  .hero p{font-size:18px;line-height:1.5}
  .phone{width:min(320px,82vw);border-width:8px;border-radius:42px}
  .trust{margin-bottom:64px}
  .section{padding:56px 0}
  .section h2{font-size:44px;line-height:1.06}
  .lead{font-size:18px}
  .cards{gap:18px;margin-top:32px}
  .shot{height:460px}
  .final{padding:82px 0 96px}
  .article{margin:48px auto 88px}
  .article h1{font-size:48px}
  .article h2{font-size:29px;margin-top:42px}
  .article p,.article li{font-size:17px;line-height:1.58}
}
@media(max-width:520px){
  .wrap{width:min(100% - 34px,1160px)}
  .nav{padding:18px 0}
  .hero{padding:22px 0 56px}
  .eyebrow{font-size:12px;letter-spacing:.14em}
  .hero h1{font-size:42px;letter-spacing:-.045em}
  .hero p{font-size:17px}
  .cta{width:100%;padding:14px 18px}
  .subcta{font-size:16px}
  .phone-stage{margin-top:10px}
  .phone{width:min(300px,84vw)}
  .vault-ring{width:300px;height:300px;top:24px;right:50%;transform:translateX(50%)}
  .trust{gap:10px;margin:0 auto 54px}
  .trust div{padding:18px 16px;border-radius:18px}
  .section{padding:48px 0}
  .section h2{font-size:38px;margin-bottom:14px}
  .lead{font-size:17px}
  .card{padding:18px;border-radius:24px}
  .card h3{font-size:22px}
  .shot{height:390px;padding:12px}
  .split{gap:30px}
  .aes{padding:24px;border-radius:26px}
  .aes .big{font-size:54px}
  .final{padding:68px 0 82px}
  .final h2{font-size:40px;line-height:1.08}
  .article{width:min(100% - 34px,820px);margin:38px auto 72px}
  .article h1{font-size:40px;line-height:1.02}
  .article h2{font-size:27px;line-height:1.14;margin-top:38px}
  .article p,.article li{font-size:16.5px}
  .analogy{gap:12px;margin:24px 0}
  .analogy div{padding:18px;border-radius:18px}
  .analogy b{font-size:19px}
}


/* 003: Cosmic Indigo visual identity */
:root{--bg:#050712;--bg2:#0a1024;--card:#0d1424;--line:#28345e;--txt:#f7f8ff;--muted:#b6bfd4;--blue:#4ea1ff;--blue2:#8fc7ff;--indigo:#736cff;--violet:#8e7cff;--gold:#d8b45a}
body{background:radial-gradient(circle at 78% 9%,rgba(61,78,150,.38) 0,rgba(14,24,58,.75) 19%,#080d1b 42%,#050712 68%);}
.hero{position:relative}.hero:before{content:"";position:absolute;inset:4% -8% auto auto;width:420px;height:420px;pointer-events:none;background:linear-gradient(135deg,transparent 18%,rgba(78,161,255,.08) 18% 19%,transparent 19% 46%,rgba(115,108,255,.10) 46% 47%,transparent 47%);clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);filter:drop-shadow(0 0 34px rgba(115,108,255,.16));}
.hero h1 .scan-word{color:#f7f8ff}.hero h1 em{color:var(--blue);text-shadow:0 0 28px rgba(78,161,255,.18)}.hero h1 .private-word{background:linear-gradient(90deg,#f7f8ff 0%,#b9b5ff 35%,#7d76ff 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand span{background:linear-gradient(90deg,var(--blue),var(--indigo));-webkit-background-clip:text;background-clip:text;color:transparent}.lang{background:rgba(13,20,36,.86);border-color:#303c68}.vault-ring{border-color:#35457b;box-shadow:inset 0 0 0 32px #0b1227,inset 0 0 0 34px #4653a0,0 0 110px rgba(79,103,255,.22)}.vault-ring:before,.vault-ring:after{background:linear-gradient(90deg,#314c78,#635fe6)}
.trust div,.card,.bullet,.analogy div{background:linear-gradient(180deg,rgba(15,23,42,.96),rgba(8,13,25,.98));border-color:#28345e}.card{box-shadow:0 18px 60px rgba(0,0,0,.18)}.shot{background:radial-gradient(circle at 50% 30%,rgba(67,72,151,.15),#060913 68%)}.aes{background:linear-gradient(145deg,#111a35,#090e1e 62%);border-color:#3a4d87;box-shadow:inset 0 1px 0 rgba(255,255,255,.02),0 24px 70px rgba(17,26,73,.16)}.aes .big{background:linear-gradient(90deg,var(--blue),var(--indigo));-webkit-background-clip:text;background-clip:text;color:transparent}.cta{box-shadow:0 12px 46px rgba(78,161,255,.18)}.footer{border-top-color:#222b4b}
@media(max-width:850px){.hero:before{width:300px;height:300px;right:-4%;top:40%}.hero h1 .private-word{background:linear-gradient(90deg,#f7f8ff 0%,#c6c1ff 42%,#8078ff 100%);-webkit-background-clip:text;background-clip:text}.shot{height:440px}}
@media(max-width:520px){.hero h1{font-size:40px}.hero:before{width:250px;height:250px;top:49%;right:-10%}.section h2{font-size:36px}.article h1{font-size:37px}.article h2{font-size:25px}.shot{height:370px}.card{padding:16px}.footer .wrap{align-items:flex-start}}

/* Official App Store badge CTA */
.appstore-badge{display:inline-block;margin-top:28px;line-height:0;filter:drop-shadow(0 10px 28px rgba(78,161,255,.16));transition:transform .18s ease,filter .18s ease}
.appstore-badge:hover{transform:translateY(-1px);filter:drop-shadow(0 12px 32px rgba(91,108,255,.22))}
.appstore-badge img{display:block;width:220px;height:auto;max-width:100%}
.final .appstore-badge{margin-top:30px}
@media(max-width:640px){.appstore-badge{margin-top:24px}.appstore-badge img{width:210px}.final .appstore-badge{margin-top:26px}}

/* 005: iPhone stability + darker mobile hero */
html,body{width:100%;max-width:100%;overflow-x:hidden}
@supports (overflow:clip){html,body{overflow-x:clip}}
main,.hero,.section,.trust,.cards,.split,.final,.footer{max-width:100%}
.hero,.phone-stage{min-width:0}
.hero{overflow:hidden}
@supports (overflow:clip){.hero{overflow:clip}}
.cards>*,.split>*{min-width:0}

@media(max-width:850px){
  body{background:linear-gradient(180deg,#091323 0,#060b16 24%,#050712 58%,#050712 100%);background-attachment:scroll}
  .nav{position:relative;z-index:5}
  .hero{background:radial-gradient(circle at 80% 18%,rgba(57,78,145,.18) 0,rgba(19,31,66,.10) 28%,transparent 52%);border-radius:0}
  .hero:before{right:0;opacity:.45;transform:translateX(28%)}
  .vault-ring{max-width:88vw;max-height:88vw}
  .phone-stage{width:100%;overflow:hidden}
  .shot img{max-width:100%;object-fit:contain}
}
@media(max-width:520px){
  body{background:#050914}
  .nav{padding-top:16px;padding-bottom:16px}
  .brand{font-size:16px}
  .lang{background:#0b1223;border-color:#26345e;color:#edf3ff}
  .hero{background:linear-gradient(180deg,#0b1628 0,#08111f 58%,#06101d 100%);margin-left:0;margin-right:0;padding-left:17px;padding-right:17px;width:100%;overflow:hidden}
  .hero:before{width:210px;height:210px;top:47%;right:0;transform:translateX(36%);opacity:.28}
  .hero h1{font-size:38px;line-height:1.01;overflow-wrap:break-word}
  .hero p{font-size:16.5px;color:#b4bfd1}
  .phone-stage{margin-left:-17px;margin-right:-17px;width:calc(100% + 34px)}
  .phone{max-width:286px}
  .trust{padding-left:0;padding-right:0}
  .trust div{width:100%}
  .section h2{font-size:34px}
  .final h2{font-size:37px}
  .footer{overflow:hidden}
}

/* 006: single solid violet accent — no color gradients in identity */
:root{
  --accent:#7b74ff;
  --blue:#7b74ff;
  --blue2:#7b74ff;
  --indigo:#7b74ff;
  --violet:#7b74ff;
}
/* Brand and hero statement use one identical solid accent */
.brand,
.brand span,
.hero h1,
.hero h1 .scan-word,
.hero h1 em,
.hero h1 .private-word{
  color:var(--accent) !important;
  background:none !important;
  -webkit-background-clip:initial !important;
  background-clip:initial !important;
  text-shadow:none !important;
}
.eyebrow,.aes .big,.back{color:var(--accent) !important;background:none !important;-webkit-background-clip:initial !important;background-clip:initial !important}
/* Keep the interface restrained: violet is the only chromatic accent */
.lang{border-color:#34306d}
.vault-ring{border-color:#403b82;box-shadow:inset 0 0 0 32px #0b1020,inset 0 0 0 34px #302b65,0 0 90px rgba(123,116,255,.16)}
.vault-ring:before,.vault-ring:after{background:#373278}
.trust div,.card,.bullet,.analogy div{border-color:#2d2a5b}
.aes{border-color:#393477}
.appstore-badge{filter:drop-shadow(0 10px 28px rgba(123,116,255,.12))}
.appstore-badge:hover{filter:drop-shadow(0 12px 32px rgba(123,116,255,.16))}
/* Decorative hero geometry is monochrome violet, never blue-to-purple */
.hero:before{background:linear-gradient(135deg,transparent 18%,rgba(123,116,255,.08) 18% 19%,transparent 19% 46%,rgba(123,116,255,.08) 46% 47%,transparent 47%)}


/* 007: white readable hero copy; frozen design otherwise */
.hero .eyebrow,
.hero h1,
.hero h1 .scan-word,
.hero h1 em,
.hero h1 .private-word,
.hero .hero-security{
  color:#ffffff !important;
  background:none !important;
  -webkit-background-clip:initial !important;
  background-clip:initial !important;
  text-shadow:none !important;
}
.hero .eyebrow{font-size:15px;letter-spacing:.02em;text-transform:none;font-weight:800}
.hero .hero-security{font-size:16px;font-weight:700;letter-spacing:.01em;margin:0 0 14px;max-width:720px}
.hero h1{font-size:clamp(42px,5.3vw,72px);line-height:1.01;letter-spacing:-.045em;margin:14px 0 18px}
.legal-note{width:min(1160px,92vw);margin:10px auto 0;color:#667085;font-size:6px;line-height:1.2;text-align:left}
@media(max-width:520px){
  .hero h1{font-size:34px;line-height:1.04}
  .hero .hero-security{font-size:14px;line-height:1.35}
  .hero .eyebrow{font-size:14px}
}


/* 009: paired top labels, same existing type scale */
.brandline{display:flex;align-items:center;gap:28px;min-width:0}
.brand-side{color:var(--accent);font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.hero-meta{display:flex;align-items:center;justify-content:space-between;gap:18px;max-width:760px;margin-bottom:0}
.format-line{color:#fff;font-size:15px;font-weight:800;letter-spacing:.02em;white-space:nowrap;text-align:right}
@media(max-width:850px){
  .brandline{flex:1;justify-content:space-between;max-width:290px}
  .hero-meta{width:100%;max-width:none}
  .format-line{font-size:14px}
}
@media(max-width:520px){
  .nav{gap:12px}
  .brandline{max-width:none;flex:1;gap:12px}
  .brand-side{font-size:16px}
  .hero-meta{gap:12px}
  .format-line{font-size:12px;font-weight:700;letter-spacing:0;overflow:hidden;text-overflow:ellipsis}
}

/* 011: multilingual selector only — frozen visual design otherwise */
.lang-select{appearance:none;-webkit-appearance:none;background:#0b1223;color:#edf3ff;border:1px solid #34306d;border-radius:999px;padding:8px 30px 8px 12px;font:inherit;font-size:13px;line-height:1.2;cursor:pointer;background-image:linear-gradient(45deg,transparent 50%,#9aa7bd 50%),linear-gradient(135deg,#9aa7bd 50%,transparent 50%);background-position:calc(100% - 14px) 50%,calc(100% - 10px) 50%;background-size:4px 4px,4px 4px;background-repeat:no-repeat;max-width:150px}
.lang-select:focus{outline:1px solid #7b74ff;outline-offset:2px}
.footer .lang-select{padding-top:6px;padding-bottom:6px;vertical-align:middle}
@media(max-width:850px){.navlinks a:not(:last-of-type){display:none}.lang-select{max-width:120px}.navlinks{gap:8px}}
@media(max-width:520px){.lang-select{font-size:12px;max-width:108px;padding-left:9px;padding-right:25px}.brandline{min-width:0}.brand-side{white-space:nowrap}}


/* 015: Russian knowledge base — 70 standalone question pages */
.brand-link{text-decoration:none;color:inherit}
.questions-hero{padding:72px 0 34px;max-width:900px}
.questions-hero h1{font-size:clamp(42px,6vw,72px);line-height:1.02;letter-spacing:-.045em;margin:14px 0 20px;color:#fff}
.questions-hero p{max-width:760px;color:var(--muted);font-size:19px;line-height:1.6}
.questions-content{padding:10px 0 80px}
.question-group{margin:48px 0 0}
.question-group h2{font-size:30px;letter-spacing:-.025em;margin:0 0 18px;color:#fff}
.question-list{display:grid;gap:10px}
.question-row{display:grid;grid-template-columns:52px 1fr 24px;gap:14px;align-items:center;padding:18px 20px;border:1px solid #2d2a5b;border-radius:18px;background:#0b1120;text-decoration:none;color:#fff;transition:transform .16s ease,border-color .16s ease,background .16s ease}
.question-row:hover{transform:translateY(-1px);border-color:#4b468f;background:#10172a}
.question-row span{font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.08em}
.question-row b{font-size:17px;line-height:1.35}
.question-row em{font-style:normal;color:#8e98ad;text-align:right}
.question-article{max-width:860px}
.question-kicker{margin:20px 0 10px;color:var(--accent);font-weight:800;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
.question-article>p{margin:0 0 20px;color:#d7dced}
.question-article>h2{color:#fff}
.article-download{margin:58px 0 34px;padding:30px;border:1px solid #393477;border-radius:28px;background:#0b1120;display:grid;grid-template-columns:1.3fr .8fr;gap:26px;align-items:center}
.article-download h2{margin:7px 0 12px;font-size:31px;line-height:1.1;color:#fff}
.article-download p{margin:0;color:#b6bfd4;font-size:16px;line-height:1.6}
.store-card{display:flex;align-items:center;gap:15px;padding:16px;border:1px solid #403b82;border-radius:22px;background:#070b15;text-decoration:none;color:#fff;transition:transform .16s ease,border-color .16s ease}
.store-card:hover{transform:translateY(-1px);border-color:#665fd0}
.store-icon{width:76px;height:76px;border-radius:18px;object-fit:cover;flex:0 0 auto}
.store-card-copy{display:flex;flex-direction:column;min-width:0}
.store-card-copy b{font-size:18px;line-height:1.2}
.store-card-copy small{margin-top:4px;color:#9da7bb;font-size:12px}
.store-badge-text{margin-top:10px;color:var(--accent);font-weight:800;font-size:14px}
.question-pager{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:center;margin:24px 0 64px;padding-top:24px;border-top:1px solid #222b4b}
.question-pager a{color:#c8c5ff;text-decoration:none;font-size:14px;font-weight:700}
.question-pager a:last-child{text-align:right}
.questions-bottom{padding-bottom:76px}
.knowledge-home{border-top:1px solid #222b4b}
@media(max-width:720px){
 .questions-hero{padding:46px 0 20px}.questions-hero h1{font-size:40px}.questions-hero p{font-size:17px}
 .question-group{margin-top:36px}.question-group h2{font-size:26px}
 .question-row{grid-template-columns:40px 1fr 18px;padding:16px 15px;gap:10px}.question-row b{font-size:15.5px}
 .article-download{grid-template-columns:1fr;padding:22px;border-radius:22px;margin-top:42px}.article-download h2{font-size:27px}
 .store-card{max-width:100%}.store-icon{width:68px;height:68px}
 .question-pager{grid-template-columns:1fr 1fr}.question-pager a:nth-child(2){grid-column:1/-1;grid-row:1;text-align:center}.question-pager a:first-child{grid-row:2}.question-pager a:last-child{grid-row:2}
}

/* 016: featured RU knowledge-base entry */
.knowledge-home-featured{position:relative;border:1px solid rgba(143,110,255,.42);border-radius:28px;padding:34px 32px;background:rgba(90,68,160,.10);box-shadow:0 18px 50px rgba(0,0,0,.16)}
.knowledge-count{display:inline-flex;align-items:center;min-height:34px;padding:0 13px;margin-bottom:14px;border-radius:999px;background:rgba(143,110,255,.16);border:1px solid rgba(143,110,255,.38);font-weight:700;letter-spacing:.02em}
.knowledge-home-featured h2{max-width:900px;margin-top:8px}
.knowledge-home-featured .lead{max-width:900px}
.knowledge-cta{margin-top:8px}
@media(max-width:700px){.knowledge-home-featured{padding:26px 20px;border-radius:22px}.knowledge-home-featured h2{font-size:clamp(28px,8vw,40px)}}