:root{
  --bg:#f5f8fc;--surface:#fff;--surface-2:#eef4fa;--text:#0e1726;--muted:#566074;--line:#dde5ef;
  --accent:#0077b6;--accent-ink:#fff;--accent-hover:#00659b;--brand:#00aff0;--accent-soft:rgba(0,175,240,.12);
  --ok:#0f8a4b;--ok-soft:rgba(15,138,75,.12);--warn:#9a5b00;--warn-soft:rgba(214,137,16,.14);--no:#b4232a;
  --radius:16px;--shadow:0 1px 2px rgba(14,23,38,.05),0 8px 24px -12px rgba(14,23,38,.18);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Helvetica Neue",Arial,"Noto Sans Thai","Noto Sans Devanagari","Noto Sans Arabic",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0a111d;--surface:#111b2b;--surface-2:#0e1726;--text:#e5ecf5;--muted:#9aa7ba;--line:#223047;
  --accent:#0a8fd6;--accent-hover:#1aa0e6;--accent-soft:rgba(0,175,240,.16);
  --ok:#3ccf85;--ok-soft:rgba(60,207,133,.14);--warn:#f0b454;--warn-soft:rgba(240,180,84,.14);--no:#ff7a80;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px -14px rgba(0,0,0,.6);color-scheme:dark;
}}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 var(--font);overflow-x:hidden}
img,svg{max-width:100%}
a{color:var(--accent);text-underline-offset:3px}
@media (prefers-color-scheme:dark){a{color:#5cc8ff}}
h1,h2,h3{line-height:1.25;margin:0 0 .6em;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,4.4vw,2.9rem);font-weight:800}
h2{font-size:clamp(1.4rem,2.8vw,1.85rem);font-weight:750}
h3,.h3{font-size:1.1rem;font-weight:700}
p{margin:0 0 1em}
.wrap{max-width:1140px;margin-inline:auto;padding-inline:20px}
.narrow{max-width:800px}
.center{text-align:center}
.muted{color:var(--muted);font-size:.95rem}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;inset-inline-start:-999px;top:8px;background:var(--surface);padding:8px 14px;border-radius:8px;z-index:99}
.skip:focus{inset-inline-start:8px}
.i{width:22px;height:22px;flex:none;vertical-align:middle}
.i.sm{width:17px;height:17px}.i.xs{width:14px;height:14px}
[dir=rtl] .flip{transform:scaleX(-1)}
.mark{flex:none;display:block;border-radius:24%}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--accent);color:var(--accent-ink);
  font-weight:700;text-decoration:none;border-radius:12px;padding:12px 20px;border:0;cursor:pointer;transition:background .15s,transform .15s}
.btn:hover{background:var(--accent-hover);color:#fff}
.btn:active{transform:translateY(1px)}
.btn-sm{padding:8px 14px;font-size:.92rem;border-radius:10px}
.btn-lg{padding:16px 26px;font-size:1.08rem}
.btn-block{display:flex;width:100%}
.btn small{font-weight:500;opacity:.85}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--surface) 88%,transparent);
  backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;gap:14px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:800;font-size:1.2rem;letter-spacing:-.02em;margin-inline-end:auto}
.brand b{color:var(--brand);font-weight:800}
.nav{display:flex;gap:4px}
.nav a{color:var(--muted);text-decoration:none;font-weight:600;font-size:.95rem;padding:8px 10px;border-radius:9px;white-space:nowrap}
.nav a:hover,.nav a[aria-current]{color:var(--text);background:var(--surface-2)}
.nav-toggle{display:none;background:none;border:0;color:var(--text);padding:6px;cursor:pointer;border-radius:8px}
.lang{position:relative}
.lang summary{list-style:none;display:flex;align-items:center;gap:5px;cursor:pointer;padding:7px 9px;border-radius:9px;
  border:1px solid var(--line);font-weight:700;font-size:.85rem;color:var(--muted)}
.lang summary::-webkit-details-marker{display:none}
.lang[open] summary{color:var(--text)}
.lang ul{position:absolute;inset-inline-end:0;top:calc(100% + 8px);list-style:none;margin:0;padding:6px;background:var(--surface);
  border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);width:230px;max-height:min(70vh,520px);overflow:auto;
  display:grid;grid-template-columns:1fr 1fr;gap:2px}
.lang li a{display:block;padding:7px 9px;border-radius:8px;color:var(--text);text-decoration:none;font-size:.9rem}
.lang li a:hover{background:var(--surface-2)}
.lang li a[aria-current]{background:var(--accent-soft);color:var(--accent);font-weight:700}
@media (max-width:980px){
  .nav-toggle{display:block}
  .nav{display:none;position:absolute;top:64px;inset-inline:0;flex-direction:column;background:var(--surface);
    border-bottom:1px solid var(--line);padding:10px 16px 16px;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav a{padding:12px}
}
@media (max-width:560px){
  .wrap{padding-inline:16px}
  .hdr{gap:8px}
  .hdr-cta span{display:none}
  .hdr-cta{padding:9px}
  .lang summary span{display:none}
}

/* hero */
.hero{padding:44px 0 56px;background:
  radial-gradient(900px 400px at 85% -10%,var(--accent-soft),transparent 70%),
  radial-gradient(700px 360px at -10% 110%,var(--accent-soft),transparent 70%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--ok);background:var(--ok-soft);font-weight:700;font-size:.85rem;
  padding:5px 12px;border-radius:99px;margin-bottom:16px}
.lead{font-size:1.13rem;color:var(--muted)}
.lead strong{color:var(--text)}
.points{list-style:none;padding:0;margin:20px 0 0;display:flex;flex-wrap:wrap;gap:10px}
.points li{display:flex;align-items:center;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:99px;
  padding:6px 13px;font-weight:600;font-size:.92rem}
.points .i{color:var(--ok)}
.phone{margin-top:30px;width:190px;aspect-ratio:9/17;border-radius:34px;background:#0b1320;padding:9px;box-shadow:var(--shadow)}
.phone-screen{height:100%;border-radius:26px;background:linear-gradient(180deg,#e9f7fe,#fff);overflow:hidden;position:relative}
@media (prefers-color-scheme:dark){.phone{background:#1e2a3d}.phone-screen{background:linear-gradient(180deg,#0f2536,#0b1320)}}
.phone-bar{height:28px;display:flex;justify-content:center;padding-top:8px}
.phone-bar span{width:60px;height:14px;border-radius:9px;background:#0b1320}
.phone-splash{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px}
.phone-splash p{margin:0;font-weight:800;font-size:1.1rem}
.phone-splash i{width:90px;height:4px;border-radius:4px;background:var(--line);position:relative;overflow:hidden}
.phone-splash i::after{content:"";position:absolute;inset-block:0;inset-inline-start:0;width:40%;background:var(--brand);border-radius:4px;animation:load 1.6s ease-in-out infinite}
.phone-splash small{color:var(--muted);font-size:.72rem}
@keyframes load{0%{transform:translateX(-100%)}100%{transform:translateX(250%)}}
[dir=rtl] .phone-splash i::after{animation-name:loadr}
@keyframes loadr{0%{transform:translateX(100%)}100%{transform:translateX(-250%)}}
@media (prefers-reduced-motion:reduce){.phone-splash i::after{animation:none}}

/* download card */
.dl-card{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--shadow);position:sticky;top:84px}
.dl-head{display:flex;gap:14px;align-items:center;margin-bottom:18px}
.dl-name{font-weight:800;font-size:1.2rem;margin:0 0 6px}
.badge{display:inline-flex;align-items:center;gap:4px;font-size:.78rem;font-weight:700;border-radius:99px;padding:3px 9px;margin-block:2px}
.badge.ok{background:var(--ok-soft);color:var(--ok)}
.badge.warn{background:var(--warn-soft);color:var(--warn)}
.dl-meta{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:0 0 18px}
.dl-meta div{background:var(--surface);padding:10px 12px;min-width:0}
.dl-meta dt{font-size:.75rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-weight:600}
.dl-meta dd{margin:2px 0 0;font-weight:700;font-size:.95rem;overflow-wrap:anywhere}
.dl-note{display:flex;gap:8px;font-size:.86rem;color:var(--muted);margin:12px 0 0;line-height:1.5}
.dl-note .i{margin-top:2px;color:var(--muted)}
.sha{margin:14px 0 0;font-size:.78rem;display:flex;flex-wrap:wrap;align-items:center;gap:6px;background:var(--surface-2);padding:8px 10px;border-radius:10px}
.sha span{font-weight:700;color:var(--muted)}
.sha code{overflow-wrap:anywhere;flex:1;min-width:0;font-size:.74rem}
.copy{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:7px;padding:3px 9px;font-size:.78rem;cursor:pointer}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .dl-card{position:static}
  .phone{display:none}
}

/* toc */
.toc{border-block:1px solid var(--line);background:var(--surface)}
.toc .wrap{display:flex;gap:6px;overflow-x:auto;padding-block:10px;scrollbar-width:none}
.toc a{white-space:nowrap;text-decoration:none;color:var(--muted);font-weight:600;font-size:.9rem;padding:6px 12px;border-radius:99px;background:var(--surface-2)}
.toc a:hover{color:var(--text)}

/* sections */
.section{padding:56px 0}
.section.alt{background:var(--surface)}
.prose h2{margin-top:1.4em}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--text)}
.h-ico{width:28px;height:28px;color:var(--ok);margin-inline-end:8px;vertical-align:-5px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.cards.two{grid-template-columns:repeat(2,1fr);margin-top:0}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.section:not(.alt) .card{background:var(--surface)}
.card p{color:var(--muted);margin:0}
.card-ico{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--accent-soft);color:var(--accent);margin-bottom:14px}
@media (prefers-color-scheme:dark){.card-ico{color:#5cc8ff}}
.card.link{text-decoration:none;color:var(--text);display:flex;flex-direction:column;transition:border-color .15s,transform .15s}
.card.link:hover{border-color:var(--accent);transform:translateY(-2px)}
.card-more{margin-top:auto;padding-top:14px;display:flex;align-items:center;gap:6px;color:var(--accent);font-weight:700;font-size:.92rem}
@media (max-width:900px){.cards{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.cards,.cards.two{grid-template-columns:1fr}}
.callout{background:var(--warn-soft);border:1px solid color-mix(in srgb,var(--warn) 35%,transparent);border-radius:var(--radius);padding:22px 24px}
.callout h2{font-size:1.2rem;display:flex;align-items:center;gap:10px;color:var(--warn)}
.callout ul{margin:0;padding-inline-start:20px}
.callout li{margin-bottom:8px}
.callout.soft{background:var(--accent-soft);border-color:color-mix(in srgb,var(--brand) 30%,transparent);margin-bottom:32px}
.callout.soft h2{color:var(--text)}
p.callout.soft{margin:24px 0 0}
.steps{list-style:none;counter-reset:s;padding:0;margin:24px 0}
.steps li{counter-increment:s;position:relative;padding-inline-start:58px;margin-bottom:18px;min-height:42px}
.steps li::before{content:counter(s);position:absolute;inset-inline-start:0;top:0;width:40px;height:40px;border-radius:12px;
  background:var(--accent);color:#fff;font-weight:800;display:grid;place-items:center}
.steps li p{margin:0;padding-top:8px}
.steps.big li{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px 20px 78px}
[dir=rtl] .steps.big li{padding:20px 78px 20px 22px}
.steps.big li::before{inset-inline-start:22px;top:20px}
.steps.big li h3{margin:6px 0 6px}
.steps.big li p{padding-top:0;color:var(--muted)}
.steps.big li p strong{color:var(--text)}
.more{font-weight:600}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.compare{width:100%;border-collapse:collapse;min-width:440px}
.compare th,.compare td{padding:13px 16px;border-bottom:1px solid var(--line);text-align:start}
.compare tr:last-child th,.compare tr:last-child td{border-bottom:0}
.compare thead th{font-size:.9rem;background:var(--surface-2)}
.compare td{text-align:center;width:22%}
.compare thead th:not(:first-child){text-align:center}
.compare .hl{background:var(--accent-soft)}
.compare tbody th{font-weight:600}
.compare .yes{color:var(--ok)}.compare .no{color:var(--no)}.compare .partial{color:var(--warn)}
.faq details{background:var(--bg);border:1px solid var(--line);border-radius:14px;margin-bottom:10px}
.section:not(.alt) .faq details{background:var(--surface)}
.faq summary{list-style:none;cursor:pointer;padding:16px 20px;font-weight:700;display:flex;justify-content:space-between;gap:14px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary .i{transition:transform .2s;color:var(--muted)}
.faq details[open] summary .i{transform:rotate(180deg)}
.faq details>div{padding:0 20px 6px;color:var(--muted)}
.cta-band{background:linear-gradient(135deg,#00aff0,#0077b6);color:#fff}
.cta-band .mark{margin:0 auto 14px;box-shadow:0 0 0 4px rgba(255,255,255,.25)}
.cta-band p{opacity:.9}
.cta-band .btn{background:#fff;color:#005f92}
.cta-band .btn:hover{background:#e8f6fd}

/* inner pages */
.page-head{padding:40px 0 8px}
.crumbs{font-size:.88rem;color:var(--muted);display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.crumbs a{color:var(--muted)}
.updated{display:flex;align-items:center;gap:6px;font-size:.86rem;color:var(--muted)}
.page-head + .section{padding-top:28px}
.mail-line{display:flex;align-items:center;gap:8px;justify-content:center;margin:28px 0 0;font-size:1.05rem;flex-wrap:wrap}
.mail-line a{font-weight:700}

/* footer */
.site-footer{background:#0a111d;color:#aab5c6;padding:48px 0 24px;font-size:.93rem}
.site-footer a{color:#dbe4ef;text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.site-footer .brand{color:#fff}
.ft-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px}
.ft-brand p{margin:12px 0}
.ft-mail{display:inline-flex;align-items:center;gap:6px}
.ft-col h2{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:#fff;margin-bottom:12px}
.ft-col ul{list-style:none;margin:0;padding:0}
.ft-col li{margin-bottom:8px}
.ft-note{display:flex;gap:10px;border-top:1px solid #1f2b3d;margin:32px 0 0;padding-top:20px;font-size:.84rem;line-height:1.55}
.ft-note .i{margin-top:2px}
.ft-langs{display:flex;flex-wrap:wrap;gap:6px 14px;margin:18px 0 0;font-size:.84rem}
.ft-langs a{color:#aab5c6}
.ft-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid #1f2b3d;margin-top:20px;padding-top:18px;font-size:.84rem}
.ft-bottom p{margin:0}
@media (max-width:700px){.ft-grid{grid-template-columns:1fr 1fr}.ft-brand{grid-column:1/-1}}