/* =========================================================
   Helium Browser — main stylesheet
   ========================================================= */

/* ---------- Fonts (self-hosted Poppins) ---------- */
@font-face{font-family:"Poppins";src:url("../fonts/poppins-regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Poppins";src:url("../fonts/poppins-medium.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"Poppins";src:url("../fonts/poppins-bold.woff2") format("woff2");font-weight:600 800;font-style:normal;font-display:swap}

/* ---------- Tokens ---------- */
:root{
  --blue:#2346e8;
  --blue-600:#1b39c9;
  --blue-400:#5f86ff;
  --blue-100:#e3eaff;
  --navy:#0d2278;
  --navy-2:#08175a;
  --ink:#13205e;
  --text:#46527e;
  --muted:#6b769e;
  --line:#dbe3f7;
  --soft:#f0f4ff;
  --soft-2:#e8eefd;
  --white:#fff;
  --green:#1f9d63;
  --radius:14px;
  --radius-lg:20px;
  --shadow:0 10px 30px rgba(19,32,94,.08);
  --shadow-lg:0 22px 50px rgba(19,32,94,.14);
  --header-h:72px;
  --wrap:1200px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 12px)}
body{margin:0;font-family:"Poppins",Arial,sans-serif;font-size:16px;line-height:1.7;color:var(--text);background:var(--white);overflow-x:hidden}
img,svg{display:block;max-width:100%}
img{height:auto}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-600)}
h1,h2,h3,h4{font-family:"Poppins",Arial,sans-serif;color:var(--ink);line-height:1.25;margin:0 0 .6em;font-weight:700}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.25em}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:3px solid var(--blue-400);outline-offset:3px;border-radius:6px}
.skip-link{position:absolute;left:12px;top:-60px;z-index:200;background:var(--blue);color:#fff;padding:10px 18px;border-radius:8px;font-weight:500}
.skip-link:focus{top:12px;color:#fff}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:inherit;font-weight:600;font-size:16px;line-height:1.2;padding:14px 26px;border-radius:12px;border:2px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease;text-align:center;white-space:nowrap}
.btn svg{width:20px;height:20px;flex:none}
.btn-primary{background:linear-gradient(180deg,#3557ff,#1f3fe0);color:#fff;box-shadow:0 10px 24px rgba(35,70,232,.35)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(35,70,232,.45)}
.btn-glow{border-color:rgba(255,255,255,.75);box-shadow:0 0 0 4px rgba(255,255,255,.12),0 12px 30px rgba(8,23,90,.45)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--blue);box-shadow:0 8px 20px rgba(8,23,90,.25)}
.btn-white:hover{color:var(--blue-600);transform:translateY(-2px)}
.btn-sm{padding:10px 16px;font-size:14px;border-radius:10px}
.btn-lg{padding:17px 34px;font-size:18px;border-radius:14px}
.btn-block{width:100%}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);backdrop-filter:saturate(160%) blur(10px);-webkit-backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid transparent;transition:box-shadow .25s ease,border-color .25s ease}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(19,32,94,.08);border-bottom-color:var(--line)}
.header-inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:700;font-size:21px;letter-spacing:-.2px;flex:none}
.brand:hover{color:var(--ink)}
.brand img{width:40px;height:40px;border-radius:10px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{color:var(--ink);font-weight:500;font-size:15px;padding:8px 13px;border-radius:9px;transition:background-color .2s,color .2s}
.main-nav a:hover,.main-nav a.is-active{color:var(--blue);background:var(--soft)}
.header-cta{display:flex;align-items:center;gap:10px}
.menu-toggle{display:none;width:46px;height:46px;border-radius:12px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;color:var(--ink)}
.menu-toggle svg{width:24px;height:24px}
.menu-toggle .icon-close{display:none}
.menu-toggle[aria-expanded="true"] .icon-open{display:none}
.menu-toggle[aria-expanded="true"] .icon-close{display:block}
.nav-download{display:none}

/* ---------- Section basics ---------- */
.section{padding:72px 0}
.section-soft{background:var(--soft)}
.title-bar{position:relative;padding-left:20px}
.title-bar::before{content:"";position:absolute;left:0;top:.15em;bottom:.15em;width:6px;border-radius:4px;background:var(--blue)}
.title-center{display:flex;align-items:center;justify-content:center;gap:22px;text-align:center}
.title-center::before,.title-center::after{content:"";height:3px;width:70px;border-radius:3px;background:var(--blue);flex:none}
.sec-title{font-size:clamp(26px,3.3vw,38px);letter-spacing:-.4px}
.sec-lead{font-size:17px;color:var(--text);max-width:760px}
.center{text-align:center}
.center .sec-lead{margin-left:auto;margin-right:auto}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;background:#122fb8 url("../images/hero-bg.webp") center bottom/cover no-repeat;padding:34px 0 0}
.hero-inner{position:relative;text-align:center}
.hero-pill{display:inline-block;border:2px solid rgba(255,255,255,.75);border-radius:40px;padding:5px 20px;font-size:13px;letter-spacing:3px;font-weight:600;text-transform:uppercase;background:rgba(255,255,255,.08);box-shadow:0 0 18px rgba(140,180,255,.5)}
.hero h1{color:#fff;margin:14px 0 6px;font-weight:700}
.hero h1 .h1-main{display:block;font-size:clamp(40px,7vw,78px);line-height:1.05;letter-spacing:-1px;text-shadow:0 6px 30px rgba(5,15,90,.45)}
.hero h1 .h1-sub{display:block;font-size:clamp(18px,2.3vw,26px);font-weight:500;margin-top:10px;letter-spacing:0}
.hero-intro{max-width:720px;margin:0 auto 10px;color:rgba(255,255,255,.9);font-size:16px}
.hero-dots{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 14px;font-size:14px;color:rgba(255,255,255,.85);margin-bottom:18px}
.hero-dots span+span::before{content:"•";margin-right:14px;opacity:.7}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.hero-stage{position:relative;max-width:1180px;margin:26px auto 0;padding:0 0 10px}
.hero-shot{width:min(760px,100%);margin:0 auto;position:relative;z-index:2;filter:drop-shadow(0 30px 40px rgba(4,14,90,.35))}
.float-card{position:absolute;z-index:3;display:flex;align-items:center;gap:14px;text-align:left;padding:16px 20px;border-radius:18px;background:linear-gradient(150deg,rgba(80,120,255,.55),rgba(30,60,210,.45));border:1.5px solid rgba(190,215,255,.7);box-shadow:0 0 26px rgba(120,170,255,.45),0 14px 30px rgba(5,15,90,.3);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);width:250px;animation:floaty 6s ease-in-out infinite}
.float-card svg{width:38px;height:38px;flex:none;color:#fff}
.float-card strong{display:block;color:#fff;font-size:17px;line-height:1.25}
.float-card small{display:block;color:rgba(255,255,255,.85);font-size:13px;line-height:1.35}
.fc-1{left:0;top:6%;transform:rotate(-5deg)}
.fc-2{left:2%;top:46%;transform:rotate(-3deg);animation-delay:-2s}
.fc-3{right:0;top:4%;transform:rotate(5deg);animation-delay:-1s}
.fc-4{right:2%;top:44%;transform:rotate(3deg);animation-delay:-3s}
@keyframes floaty{0%,100%{translate:0 0}50%{translate:0 -8px}}
.hero-platforms{position:relative;z-index:3;display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:8px 0;padding:6px 0 26px}
.hero-platforms span{display:flex;align-items:center;gap:9px;font-weight:600;font-size:16px;padding:0 24px;color:#fff}
.hero-platforms span+span{border-left:1px solid rgba(255,255,255,.4)}
.hero-platforms svg{width:22px;height:22px}

/* ---------- What is ---------- */
.about-band{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.about-grid{display:grid;grid-template-columns:minmax(240px,340px) 1fr;gap:40px;align-items:center}
.about-grid .sec-title{margin:0}
.about-text{border-left:1px solid #c9d4f3;padding-left:40px}
.about-text p:last-child{margin-bottom:0}

/* ---------- Features ---------- */
.features-row{display:grid;grid-template-columns:repeat(6,1fr);margin-top:34px}
.feature{position:relative;text-align:center;padding:18px 16px 22px;border-radius:var(--radius);transition:transform .25s ease,box-shadow .25s ease,background-color .25s ease}
.feature+.feature::before{content:"";position:absolute;left:0;top:14%;bottom:14%;width:1px;background:var(--line)}
.feature:hover{transform:translateY(-6px);background:#fff;box-shadow:var(--shadow-lg)}
.feature:hover::before,.feature:hover+.feature::before{opacity:0}
.feature-icon{width:58px;height:58px;margin:0 auto 14px;border-radius:16px;background:var(--blue-100);color:var(--blue);display:flex;align-items:center;justify-content:center;transition:transform .25s ease,background-color .25s,color .25s}
.feature-icon svg{width:30px;height:30px}
.feature:hover .feature-icon{transform:scale(1.08);background:var(--blue);color:#fff}
.feature h3{font-size:16.5px;margin-bottom:8px}
.feature p{font-size:14px;line-height:1.6;margin:0}

/* ---------- Process strips (How it works / Install) ---------- */
.strip{background:var(--soft);position:relative;overflow:hidden}
.strip::before{content:"";position:absolute;left:0;top:0;bottom:0;width:30%;background:linear-gradient(105deg,#fff 0 78%,transparent 78.2%);opacity:.75}
.strip-grid{position:relative;display:grid;grid-template-columns:minmax(220px,300px) 1fr;gap:34px;align-items:center}
.strip-grid .sec-title{margin:0 0 10px}
.strip-grid .strip-lead{font-size:15px;margin:0}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;list-style:none;margin:0;padding:0;counter-reset:step}
.steps.steps-4{grid-template-columns:repeat(4,1fr)}
.step{position:relative;display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 16px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bccbf5}
.step-icon{width:48px;height:48px;flex:none;border-radius:12px;background:linear-gradient(180deg,#3557ff,#1f3fe0);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 18px rgba(35,70,232,.3)}
.step-icon svg{width:26px;height:26px}
.step-num{position:absolute;top:-11px;left:-9px;width:26px;height:26px;border-radius:50%;background:var(--navy);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;border:2px solid #fff}
.step h3{font-size:15.5px;margin:0 0 5px}
.step p{font-size:13.5px;line-height:1.55;margin:0}
.step:not(:last-child)::after{content:"";position:absolute;right:-12px;top:50%;width:10px;height:10px;border-top:2px solid #9fb2ea;border-right:2px solid #9fb2ea;transform:translateY(-50%) rotate(45deg);z-index:2}

/* ---------- Why choose (navy band) ---------- */
.navy-band{background:linear-gradient(100deg,var(--navy-2),var(--navy) 55%,#12309e);color:#fff;position:relative;overflow:hidden}
.navy-band h2,.navy-band h3{color:#fff}
.navy-band .title-bar::before{background:#fff}
.why-grid{display:grid;grid-template-columns:minmax(240px,320px) 1fr;gap:40px;align-items:center}
.why-grid .sec-title{margin:0 0 12px}
.why-lead{color:rgba(255,255,255,.82);font-size:15px;margin:0}
.why-list{display:grid;grid-template-columns:repeat(5,1fr);list-style:none;margin:0;padding:0}
.why-item{position:relative;padding:14px 16px;border-radius:var(--radius);transition:background-color .25s,transform .25s}
.why-item+.why-item::before{content:"";position:absolute;left:0;top:12%;bottom:12%;width:1px;background:rgba(255,255,255,.22)}
.why-item:hover{background:rgba(255,255,255,.07);transform:translateY(-4px)}
.why-item svg{width:28px;height:28px;color:#fff;margin-bottom:8px}
.why-item h3{font-size:15.5px;margin:0 0 6px}
.why-item p{font-size:13.5px;line-height:1.55;color:rgba(255,255,255,.82);margin:0}

/* ---------- Download ---------- */
.dl-grid{display:grid;grid-template-columns:minmax(240px,330px) 1fr;gap:36px;align-items:start}
.dl-grid .sec-title{margin:0 0 12px}
.dl-intro{font-size:15px}
.dl-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.dl-card{border-radius:var(--radius-lg);padding:24px 20px 20px;color:#fff;display:flex;flex-direction:column;gap:10px;box-shadow:0 16px 34px rgba(19,32,94,.2);transition:transform .25s ease,box-shadow .25s ease;border:2px solid rgba(255,255,255,.18)}
.dl-card:hover{transform:translateY(-6px);box-shadow:0 22px 44px rgba(19,32,94,.28)}
.dl-card.c-win{background:linear-gradient(160deg,#3a5dff,#1d3bd6)}
.dl-card.c-mac{background:linear-gradient(160deg,#16297e,#0a185a)}
.dl-card.c-lin{background:linear-gradient(160deg,#2a4ad8,#162f9e)}
.dl-head{display:flex;align-items:center;gap:12px}
.dl-head svg{width:34px;height:34px;flex:none}
.dl-card h3{color:#fff;font-size:18px;margin:0}
.dl-card p{font-size:14px;line-height:1.55;color:rgba(255,255,255,.88);margin:0}
.dl-meta{font-size:12.5px;color:rgba(255,255,255,.75);display:flex;align-items:center;gap:6px}
.dl-meta svg{width:15px;height:15px}
.dl-btns{display:grid;gap:8px;margin-top:auto}
.dl-main{margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px 22px;box-shadow:var(--shadow)}
.dl-main-info{flex:1;min-width:220px;font-size:14px;line-height:1.6}
.dl-main-info strong{color:var(--ink);display:block;font-size:16px}
.dl-source{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:14px}
.dl-source svg{width:18px;height:18px}

/* ---------- Comparison ---------- */
.cmp-grid{display:grid;grid-template-columns:minmax(240px,320px) 1fr;gap:36px;align-items:start}
.cmp-grid .sec-title{margin:0 0 12px}
.table-wrap{overflow-x:auto;border-radius:var(--radius-lg);border:1px solid var(--line);box-shadow:var(--shadow);background:#fff;-webkit-overflow-scrolling:touch}
.cmp-table{width:100%;border-collapse:collapse;min-width:560px;font-size:14.5px}
.cmp-table th,.cmp-table td{padding:13px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
.cmp-table thead th{background:var(--soft-2);color:var(--ink);font-weight:600}
.cmp-table thead th.col-helium{background:var(--blue);color:#fff}
.th-flex{display:flex;align-items:center;gap:10px}
.th-flex img{width:26px;height:26px;border-radius:7px}
.th-flex svg{width:24px;height:24px}
.cmp-table tbody th{font-weight:600;color:var(--ink)}
.cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr:hover{background:#f7f9ff}
.cell{display:flex;align-items:center;gap:8px}
.cell svg{width:18px;height:18px;flex:none}
.cell.yes svg{color:var(--green)}
.cell.info svg{color:#d08a1d}
.cmp-note{margin-top:18px;font-size:15px}

/* ---------- Safety ---------- */
.safe-grid{display:grid;grid-template-columns:auto minmax(200px,300px) 1fr;gap:30px;align-items:center}
.safe-img{width:190px;height:190px}
.safe-grid .sec-title{margin:0;font-size:clamp(26px,3vw,36px)}
.safe-text p{color:rgba(255,255,255,.88);font-size:15px}
.pills{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:6px 0 0;padding:0}
.pills li{display:flex;align-items:center;gap:8px;border:1.5px solid rgba(255,255,255,.55);border-radius:40px;padding:8px 16px;font-size:14px;font-weight:600;background:rgba(255,255,255,.07);transition:background-color .2s,transform .2s}
.pills li:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.pills svg{width:18px;height:18px}

/* ---------- Who ---------- */
.who-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:30px}
.who-card{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px 20px;box-shadow:0 6px 18px rgba(19,32,94,.05);transition:transform .25s ease,box-shadow .25s ease,border-color .25s}
.who-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#bccbf5}
.who-card .wc-icon{width:50px;height:50px;flex:none;border-radius:14px;background:var(--blue-100);color:var(--blue);display:flex;align-items:center;justify-content:center;transition:background-color .25s,color .25s}
.who-card:hover .wc-icon{background:var(--blue);color:#fff}
.wc-icon svg{width:28px;height:28px}
.who-card h3{font-size:16px;margin:0 0 6px}
.who-card p{font-size:14px;line-height:1.55;margin:0}

/* ---------- Guides cards ---------- */
.guides-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:30px}
.guide-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 6px 18px rgba(19,32,94,.05);transition:transform .25s ease,box-shadow .25s ease}
.guide-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.guide-thumb{display:block;aspect-ratio:1200/630;overflow:hidden;background:var(--soft-2)}
.guide-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.guide-card:hover .guide-thumb img{transform:scale(1.04)}
.guide-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.guide-tag{font-size:12px;font-weight:600;letter-spacing:1px;text-transform:uppercase;color:var(--blue);margin-bottom:6px}
.guide-body h3{font-size:17.5px;margin:0 0 8px}
.guide-body h3 a{color:var(--ink)}
.guide-body h3 a:hover{color:var(--blue)}
.guide-body p{font-size:14px;line-height:1.6;margin:0 0 14px}
.read-more{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px}
.read-more svg{width:16px;height:16px;transition:transform .2s}
.read-more:hover svg{transform:translateX(4px)}

/* ---------- FAQ ---------- */
.faq-tabs{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin:26px 0 22px}
.faq-tab{display:inline-flex;align-items:center;gap:8px;border:1.5px solid var(--line);background:#fff;color:var(--ink);font-weight:600;font-size:15px;padding:10px 20px;border-radius:40px;transition:all .2s}
.faq-tab svg{width:18px;height:18px}
.faq-tab:hover{border-color:var(--blue);color:var(--blue)}
.faq-tab[aria-selected="true"]{background:var(--blue);border-color:var(--blue);color:#fff}
.faq-list{max-width:860px;margin:0 auto}
.faq-panel[hidden]{display:none}
.faq-item{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:10px;overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item.is-open{border-color:#b6c6f3;box-shadow:var(--shadow)}
.faq-q{margin:0;font-size:inherit}
.faq-btn{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;background:none;border:0;padding:15px 20px;font-size:15.5px;font-weight:600;color:var(--ink)}
.faq-btn:hover{color:var(--blue)}
.faq-btn svg{width:20px;height:20px;flex:none;color:var(--blue);transition:transform .3s ease}
.faq-item.is-open .faq-btn svg{transform:rotate(180deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a>div{overflow:hidden}
.faq-a p{padding:0 20px 16px;margin:0;font-size:15px}

/* ---------- Footer ---------- */
.site-footer{position:relative;color:#fff;background:#0f27a6 url("../images/footer-bg.webp") center bottom/cover no-repeat}
.footer-top{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:30px;padding:56px 0 34px}
.f-brand{display:flex;align-items:center;gap:16px;color:#fff}
.f-brand img{width:78px;height:78px;border-radius:19px;box-shadow:0 0 30px rgba(140,180,255,.55)}
.f-brand span{font-size:32px;font-weight:700;line-height:1.05}
.f-tag{color:rgba(255,255,255,.85);font-size:14.5px;margin-top:14px;max-width:300px}
.f-col h2{color:#fff;font-size:17px;margin:0 0 12px}
.f-col ul{list-style:none;margin:0;padding:0}
.f-col li{margin-bottom:7px}
.f-col a{color:rgba(255,255,255,.85);font-size:14.5px;text-decoration:none;display:inline-flex;align-items:center;gap:9px}
.f-col a:hover{color:#fff}
.f-col a svg{width:18px;height:18px}
.f-col+.f-col{border-left:1px solid rgba(255,255,255,.22);padding-left:30px}
.f-col p{color:rgba(255,255,255,.85);font-size:14.5px}
.footer-legal{border-top:1px solid rgba(255,255,255,.22);padding:18px 0 22px;display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}
.legal-links{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 0;list-style:none;margin:0;padding:0}
.legal-links li{display:flex;align-items:center}
.legal-links li+li::before{content:"";width:1px;height:14px;background:rgba(255,255,255,.4);margin:0 12px}
.legal-links a,.copyright a{color:rgba(255,255,255,.88);font-size:14px;text-decoration:none}
.legal-links a:hover,.copyright a:hover{color:#fff}
.copyright{font-size:14px;color:rgba(255,255,255,.8);margin:0}

/* ---------- Scroll to top ---------- */
.to-top{position:fixed;right:20px;bottom:20px;z-index:90;width:48px;height:48px;border-radius:14px;border:0;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(35,70,232,.4);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .25s,transform .25s,visibility .25s}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--blue-600)}
.to-top svg{width:22px;height:22px}

/* ---------- Inner pages ---------- */
.page-hero{position:relative;color:#fff;background:#122fb8 url("../images/hero-bg.webp") center 70%/cover no-repeat;padding:54px 0 60px;text-align:center}
.page-hero h1{color:#fff;font-size:clamp(28px,4.5vw,46px);margin:10px 0 10px;letter-spacing:-.5px}
.page-hero p{color:rgba(255,255,255,.9);max-width:760px;margin:0 auto}
.breadcrumb{display:flex;justify-content:center;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0;font-size:14px}
.breadcrumb li{display:flex;align-items:center;gap:6px;color:rgba(255,255,255,.8)}
.breadcrumb li+li::before{content:"/";opacity:.6}
.breadcrumb a{color:#fff}
.content-wrap{max-width:860px;margin:0 auto;padding:56px 20px 70px}
.prose h2{font-size:clamp(22px,2.6vw,28px);margin-top:1.6em}
.prose h3{font-size:19px;margin-top:1.4em}
.prose p,.prose li{font-size:16px}
.prose li{margin-bottom:.4em}
.prose a{text-decoration:underline;text-underline-offset:3px}
.prose .btn{text-decoration:none}
.info-card{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px 26px;margin:24px 0}
.info-card h2,.info-card h3{margin-top:0}
.email-line{display:inline-flex;align-items:center;gap:10px;font-weight:600;color:var(--ink);font-size:18px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 18px;word-break:break-all}
.email-line svg{width:22px;height:22px;color:var(--blue);flex:none}

/* ---------- Article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;padding:50px 0 70px;align-items:start}
.article-meta{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 18px;font-size:14px;color:rgba(255,255,255,.85);margin-top:10px}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta svg{width:16px;height:16px}
.article-cover{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);margin-bottom:28px;aspect-ratio:1200/630;background:var(--soft-2)}
.article-cover img{width:100%;height:100%;object-fit:cover}
.toc{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;margin:0 0 26px}
.toc strong{color:var(--ink);display:block;margin-bottom:6px}
.toc ol{margin:0;padding-left:1.2em}
.toc li{font-size:15px;margin-bottom:3px}
.toc a{text-decoration:none}
.callout{display:flex;gap:14px;background:#fff7e8;border:1px solid #f3d9a8;border-radius:var(--radius);padding:16px 18px;margin:22px 0}
.callout svg{width:24px;height:24px;color:#c27a10;flex:none;margin-top:2px}
.callout p{margin:0;font-size:15px}
.code-block{background:#101a4a;color:#e3e9ff;border-radius:12px;padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;margin:16px 0}
.code-block code{font-family:"Poppins",Arial,sans-serif;white-space:pre}
.article-cta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;background:linear-gradient(110deg,var(--navy-2),var(--blue));color:#fff;border-radius:var(--radius-lg);padding:24px 26px;margin:34px 0 10px}
.article-cta h2{color:#fff;margin:0 0 4px;font-size:21px}
.article-cta p{margin:0;color:rgba(255,255,255,.88);font-size:14.5px}
.sidebar{position:sticky;top:calc(var(--header-h) + 20px);display:grid;gap:20px}
.side-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;box-shadow:0 6px 18px rgba(19,32,94,.05)}
.side-box h2{font-size:18px;margin:0 0 14px}
.side-dl{background:linear-gradient(160deg,#3a5dff,#1b39c9);color:#fff;border:0;text-align:center}
.side-dl img{width:66px;height:66px;border-radius:16px;margin:0 auto 12px}
.side-dl h2{color:#fff}
.side-dl p{font-size:14px;color:rgba(255,255,255,.88)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li+li{border-top:1px solid var(--line)}
.side-list a{display:flex;gap:12px;align-items:center;padding:10px 0;color:var(--ink);font-size:14px;font-weight:500;line-height:1.4}
.side-list a:hover{color:var(--blue)}
.side-list img{width:72px;height:38px;border-radius:7px;object-fit:cover;flex:none}
.related{padding:0 0 70px}
.related .guides-grid{margin-top:20px}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}
.no-js .reveal{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .main-nav a{padding:8px 9px;font-size:14.5px}
  .float-card{width:220px;padding:13px 15px}
  .float-card strong{font-size:15px}
  .features-row{grid-template-columns:repeat(3,1fr);row-gap:16px}
  .feature:nth-child(4)::before{display:none}
  .why-list{grid-template-columns:repeat(3,1fr);row-gap:12px}
  .why-item:nth-child(4)::before{display:none}
}
@media (max-width:1024px){
  .menu-toggle{display:inline-flex}
  .header-cta .btn{display:none}
  .main-nav{position:fixed;left:0;right:0;top:var(--header-h);flex-direction:column;align-items:stretch;gap:2px;background:#fff;padding:12px 20px 22px;border-bottom:1px solid var(--line);box-shadow:0 20px 30px rgba(19,32,94,.12);transform:translateY(-12px);opacity:0;visibility:hidden;transition:opacity .25s,transform .25s,visibility .25s;max-height:calc(100vh - var(--header-h));overflow-y:auto}
  .main-nav.is-open{transform:none;opacity:1;visibility:visible}
  .main-nav a{padding:12px 14px;font-size:16px}
  .nav-download{display:flex;margin-top:8px}
  .float-card{display:none}
  .about-grid,.strip-grid,.why-grid,.dl-grid,.cmp-grid{grid-template-columns:1fr;gap:22px}
  .about-text{border-left:0;padding-left:0}
  .strip::before{display:none}
  .steps,.steps.steps-4{grid-template-columns:repeat(2,1fr);gap:22px 16px}
  .step:not(:last-child)::after{display:none}
  .safe-grid{grid-template-columns:auto 1fr;}
  .safe-text{grid-column:1/-1}
  .who-grid{grid-template-columns:repeat(2,1fr)}
  .guides-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr;row-gap:30px}
  .f-col:nth-child(3){border-left:0;padding-left:0}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static}
}
@media (max-width:820px){
  .dl-cards{grid-template-columns:1fr}
  .features-row{grid-template-columns:repeat(2,1fr)}
  .feature::before{display:none}
  .why-list{grid-template-columns:repeat(2,1fr)}
  .why-item::before{display:none}
}
@media (max-width:640px){
  :root{--header-h:64px}
  .section{padding:54px 0}
  .brand{font-size:18px}
  .brand img{width:36px;height:36px}
  .hero{padding-top:26px}
  .hero-actions .btn{width:100%;max-width:340px}
  .hero-platforms span{padding:0 12px;font-size:14px}
  .title-center::before,.title-center::after{width:28px}
  .title-center{gap:12px}
  .steps,.steps.steps-4{grid-template-columns:1fr}
  .why-list{grid-template-columns:1fr}
  .who-grid,.guides-grid{grid-template-columns:1fr}
  .safe-grid{grid-template-columns:1fr;text-align:left}
  .safe-img{width:150px;height:150px}
  .footer-top{grid-template-columns:1fr}
  .f-col+.f-col{border-left:0;padding-left:0}
  .f-brand img{width:62px;height:62px}
  .f-brand span{font-size:26px}
  .dl-main{flex-direction:column;align-items:stretch;text-align:center}
  .dl-main .btn{width:100%}
  .article-cta{flex-direction:column;align-items:flex-start}
  .content-wrap{padding:40px 20px 56px}
}
@media (max-width:380px){
  .features-row{grid-template-columns:1fr}
  .btn{white-space:normal}
  .hero-platforms span{padding:0 9px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- Refinements ---------- */
.sec-lead.center{margin-left:auto;margin-right:auto}
.strip-grid .sec-title,.why-grid .sec-title,.dl-grid .sec-title,.cmp-grid .sec-title{font-size:clamp(24px,2.5vw,32px)}
.strip-grid,.why-grid,.dl-grid,.cmp-grid{grid-template-columns:minmax(220px,280px) 1fr}
.step{flex-direction:column;gap:12px;padding:20px 18px}
.step h3{font-size:15.5px}
@media (max-width:1024px){
  .strip-grid,.why-grid,.dl-grid,.cmp-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .step{flex-direction:row}
}
.f-col .btn-white{color:var(--blue);margin-top:4px}
.f-col .btn-white:hover{color:var(--blue-600)}
.about-grid>*,.strip-grid>*,.why-grid>*,.dl-grid>*,.cmp-grid>*,.safe-grid>*,.article-layout>*{min-width:0}
.sec-title{overflow-wrap:break-word}
.prose code{font-family:"Poppins",Arial,sans-serif;background:var(--soft-2);color:var(--ink);padding:1px 6px;border-radius:5px;font-size:.92em}
.prose .code-block code{background:none;color:inherit;padding:0;font-size:inherit}
.lead{font-size:17px;color:var(--ink)}
.prose p code,.prose li code{overflow-wrap:anywhere;word-break:break-word}
/* Open editorial layouts for the homepage. */
#features .features-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 64px;margin-top:40px}
#features .feature{display:grid;grid-template-columns:38px 1fr;column-gap:20px;text-align:left;padding:28px 0;border-radius:0;border-bottom:1px solid var(--line);background:none;box-shadow:none;transform:none}
#features .feature::before{display:none}
#features .feature-icon,#features .feature:hover .feature-icon{grid-row:1 / 3;width:38px;height:38px;margin:0;background:none;color:var(--blue);border-radius:0;transform:none}
#features .feature h3{font-size:19px;margin:0 0 8px}
#features .feature p{max-width:48ch;font-size:14px;line-height:1.8}
#why{overflow:visible;background:#102477;padding:84px 0}
#why .why-grid{grid-template-columns:minmax(250px,.9fr) minmax(0,1.3fr);gap:clamp(40px,7vw,100px);align-items:start;transform:none;opacity:1}
#why .why-grid>div{position:sticky;top:calc(var(--header-h) + 36px);padding-bottom:16px}
#why .why-lead{font-size:16px;line-height:1.9;max-width:34ch;margin-top:24px}
#why .sec-title{font-size:clamp(30px,3.2vw,44px);line-height:1.2}
#why .why-list{display:block;counter-reset:reason}
#why .why-item{display:grid;grid-template-columns:32px 32px 1fr;gap:10px 18px;padding:30px 0;border-radius:0;border-bottom:1px solid rgba(255,255,255,.2);counter-increment:reason;background:none;transform:none}
#why .why-item:first-child{padding-top:0}
#why .why-item::before{content:counter(reason,decimal-leading-zero);position:static;display:block;width:auto;background:none;font-size:13px;color:#aebeff;grid-row:1 / 3;padding-top:3px}
#why .why-item svg{grid-column:2;grid-row:1 / 3;margin:0;width:25px;height:25px}
#why .why-item h3{grid-column:3;font-size:18px;margin:0}
#why .why-item p{grid-column:3;font-size:14px;line-height:1.7;margin:0;max-width:52ch}
#install{background:#f7f9ff;padding:80px 0;overflow:visible}
#install::before{display:none}
#install .strip-grid{grid-template-columns:minmax(260px,.9fr) minmax(0,1.3fr);gap:clamp(40px,7vw,100px);align-items:start;transform:none;opacity:1}
#install .strip-grid>div{display:block;position:sticky;top:calc(var(--header-h) + 36px)}
#install .sec-title{max-width:440px;font-size:clamp(28px,3vw,40px);line-height:1.25;margin-bottom:22px}
#install .strip-lead{max-width:45ch}
#install .steps{grid-template-columns:1fr;gap:0;position:relative;border-left:1px solid #c5cff0;margin-left:20px;padding-left:36px}
#install .step{display:grid;grid-template-columns:1fr;gap:12px;padding:0 0 32px 8px;margin-bottom:28px;border:0;border-bottom:1px solid #dce3f6;border-radius:0;background:none;box-shadow:none;transform:none}
#install .step:last-child{margin-bottom:0;padding-bottom:0;border-bottom:0}
#install .step::after{display:none}
#install .step-num{position:absolute;top:0;left:-57px;display:flex;width:40px;height:40px;align-items:center;justify-content:center;background:#f7f9ff;border:1px solid #bdc9ee;border-radius:50%;color:var(--blue);font-size:16px;font-weight:700;line-height:1}
#install .step-icon{display:none}
#install .step h3{font-size:17px;line-height:1.5;margin-bottom:10px}
#install .step p{font-size:14px;line-height:1.8}
.footer-top{grid-template-columns:minmax(340px,1.6fr) .7fr .7fr 1fr;gap:28px}
.f-brand{gap:12px;white-space:nowrap}
.f-brand img{width:48px;height:48px;border-radius:12px;box-shadow:none}
.f-brand span{font-size:clamp(22px,2.2vw,30px);line-height:1.2}
.f-tag{max-width:440px;line-height:1.8}
.footer-disclaimer{margin:0;color:rgba(255,255,255,.8);font-size:14px;line-height:1.7}
.site-footer .f-brand:hover{color:#fff}
.site-footer .f-col a:hover{color:rgba(255,255,255,.85)}
.site-footer .legal-links a:hover,.site-footer .copyright a:hover{color:rgba(255,255,255,.88)}
.site-footer .f-col .btn-white:hover,.site-footer .f-col .btn-white:focus-visible,.site-footer .f-col .btn-white:active{color:var(--blue);background:#fff}
.article-conclusion{margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.article-conclusion h2{margin-top:0}
@media(max-width:1100px){
  .footer-top{grid-template-columns:minmax(300px,1.5fr) 1fr;gap:30px}
  #why .why-grid{gap:40px}
  #install .steps{grid-template-columns:1fr}
}
@media(max-width:700px){
  #features .features-row{grid-template-columns:1fr;gap:0}
  #why .why-grid{grid-template-columns:1fr;gap:32px}
  #why .why-grid>div{position:static}
  #install .strip-grid{grid-template-columns:1fr;gap:36px}
  #install .strip-grid>div{position:static}
  #why,#install{padding:52px 0}
  .footer-top{grid-template-columns:1fr}
  .f-brand span{font-size:26px}
}
@media(max-width:440px){
  #install .steps{grid-template-columns:1fr}
  #install .step{grid-template-columns:1fr;gap:12px}
  #why .why-item{grid-template-columns:24px 24px 1fr;column-gap:12px}
}