:root{
  --ink:#10283f;
  --ink-2:#25445f;
  --blue:#4f88b9;
  --blue-deep:#0e3154;
  --blue-dark:#09253f;
  --cyan:#3ec9d5;
  --soft:#f3f8fc;
  --soft-2:#e9f2f8;
  --line:#d6e2eb;
  --white:#fff;
  --shadow:0 24px 70px rgba(10,40,66,.14);
  --radius:28px;
  --container:min(1180px,calc(100% - 40px));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:#fff;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  line-height:1.6;
  text-rendering:optimizeLegibility;
}
a{color:inherit}
img{max-width:100%;display:block}
button,input,textarea{font:inherit}
.container{width:var(--container);margin-inline:auto}
.narrow{max-width:820px}
.site-header{
  position:sticky;top:0;z-index:30;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid rgba(214,226,235,.8);
  backdrop-filter:blur(14px);
}
.nav-wrap{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:30px}
.company-brand img{width:270px;max-height:62px;object-fit:contain;object-position:left center}
.main-nav{display:flex;align-items:center;gap:26px;font-weight:650;font-size:.95rem}
.main-nav a{text-decoration:none;color:var(--ink-2);padding:10px 0}
.main-nav a:hover,.main-nav a.active{color:var(--blue-deep)}
.main-nav .nav-download{padding:11px 17px;border-radius:999px;background:var(--blue-deep);color:#fff}
.nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 14px;color:var(--ink)}
.hero{
  overflow:hidden;
  background:
    radial-gradient(circle at 80% 15%,rgba(62,201,213,.14),transparent 26rem),
    linear-gradient(180deg,#fff 0%,#f7fbfe 100%);
}
.hero-grid{min-height:760px;display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:72px;padding-block:70px}
.eyebrow{display:inline-block;color:var(--blue);font-weight:800;font-size:.78rem;letter-spacing:.16em;margin-bottom:12px}
.hashi-product-id{
  display:flex;align-items:center;gap:16px;margin:2px 0 22px;
}
.hashi-mark{width:76px;height:76px;object-fit:contain;flex:0 0 auto}
.product-name{
  display:block;font-size:1.05rem;font-weight:900;letter-spacing:.22em;color:var(--blue-deep);line-height:1.05;
}
.product-tag{
  display:block;margin-top:6px;color:#6b8294;font-size:.88rem;font-weight:700;letter-spacing:.035em;
}
h1,h2,h3{line-height:1.08;margin:0 0 18px;letter-spacing:-.025em}
h1{font-size:clamp(3rem,6vw,5.9rem)}
.hero-title{
  max-width:760px;
  font-size:clamp(3.5rem,5.25vw,5.35rem);
  line-height:.98;
  letter-spacing:-.045em;
  margin-bottom:26px;
}
.hero-title span{color:var(--blue-deep)}
h2{font-size:clamp(2.1rem,4vw,3.8rem)}
h3{font-size:1.35rem}
.hero-lede,.page-hero p,.section-heading p,.split-grid>div>p{font-size:1.13rem;color:#4b657b;max-width:760px}
.hero-copy{max-width:800px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.button{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 20px;border-radius:999px;text-decoration:none;font-weight:800;
  border:1px solid transparent;transition:.2s ease;
}
.button.primary{background:var(--blue-deep);color:#fff;box-shadow:0 12px 30px rgba(14,49,84,.22)}
.button.primary:hover{transform:translateY(-2px);background:#16476f}
.button.secondary{border-color:var(--line);background:#fff;color:var(--blue-deep)}
.button.secondary:hover{border-color:#aac4d8;transform:translateY(-2px)}
.button.disabled{background:#e8eef3;color:#7e8e9c;cursor:not-allowed}
.status-pills{display:flex;gap:9px;flex-wrap:wrap;margin-top:24px}
.status-pills span{border:1px solid #d8e6ef;background:#fff;border-radius:999px;padding:7px 11px;font-size:.85rem;color:#45627a}
.phone-stage{display:flex;justify-content:center}
.phone-shell{
  position:relative;width:min(350px,75vw);padding:10px;background:#0c1b28;border-radius:45px;
  box-shadow:0 35px 95px rgba(7,35,58,.28),inset 0 0 0 1px rgba(255,255,255,.08);
}
.phone-shell:before{
  content:"";position:absolute;z-index:2;top:14px;left:50%;transform:translateX(-50%);
  width:92px;height:22px;border-radius:999px;background:#07131c;
}
.phone-shell.compact{width:min(320px,72vw)}
.phone-video{width:100%;aspect-ratio:9/20;display:block;object-fit:cover;border-radius:36px;background:#dfe7ed}
.video-control{
  position:absolute;right:22px;bottom:22px;border:0;border-radius:999px;padding:9px 12px;
  background:rgba(9,37,63,.82);color:#fff;font-size:.78rem;font-weight:750;cursor:pointer;
}
.trust-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.trust-grid>div{padding:30px 25px;border-right:1px solid var(--line)}
.trust-grid>div:last-child{border-right:0}
.trust-grid strong,.trust-grid span{display:block}
.trust-grid strong{font-size:1rem;margin-bottom:5px}
.trust-grid span{font-size:.88rem;color:#688093}
.section{padding:110px 0}
.section-soft{background:var(--soft)}
.section-dark{
  color:#fff;background:
    radial-gradient(circle at 80% 0%,rgba(62,201,213,.18),transparent 27rem),
    linear-gradient(135deg,var(--blue-deep),var(--blue-dark));
}
.section-dark p{color:#c7d7e4}
.section-heading{max-width:780px;margin-bottom:48px}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature-grid-three{grid-template-columns:repeat(3,1fr)}
.feature-card{
  min-height:250px;padding:28px;border:1px solid var(--line);border-radius:24px;background:#fff;
  box-shadow:0 10px 30px rgba(20,50,74,.055);
}
.feature-card p{color:#627a8d;margin-bottom:0}
.feature-card.accent{background:linear-gradient(180deg,#fff,#f6fafc)}
.card-icon{
  display:inline-grid;place-items:center;width:42px;height:42px;border-radius:13px;
  background:var(--soft-2);color:var(--blue-deep);font-weight:900;margin-bottom:28px
}
.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.mini-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.mini-list span{border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:7px 11px;color:#e7f1f8;font-size:.86rem}
.visual-card{padding:36px;border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);background:rgba(255,255,255,.08)}
.visual-icon{display:grid;place-items:center;width:74px;height:74px;border-radius:22px;background:#fff;color:var(--blue-deep);font-size:2rem;font-weight:900;margin-bottom:24px}
.demo-section{background:#f8fbfd}
.demo-grid{display:grid;grid-template-columns:.72fr 1fr;gap:100px;align-items:center}
.text-link{font-weight:850;color:var(--blue-deep);text-decoration:none}
.security-preview{background:#fff}
.security-stack{display:grid;gap:12px}
.security-stack>div{padding:18px 20px;border:1px solid var(--line);border-radius:18px;background:#f9fcfe}
.security-stack strong,.security-stack span{display:block}
.security-stack span{color:#647c90;font-size:.9rem;margin-top:3px}
.cta-section{padding:0 0 110px}
.cta-card{
  display:grid;grid-template-columns:88px 1fr auto;align-items:center;gap:28px;
  padding:35px;border-radius:30px;background:linear-gradient(135deg,#eef7fc,#f8fcfe);
  border:1px solid var(--line)
}
.cta-card img{width:80px}
.page-hero{padding:110px 0 75px;background:linear-gradient(180deg,#f8fbfd,#fff)}
.page-hero h1{font-size:clamp(3rem,6vw,5.6rem)}
.notice{padding:14px 18px;border-radius:16px;background:#fff3cd;border:1px solid #ffe08a;color:#6c5610}
.feature-detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.feature-detail-grid article{padding:30px;border:1px solid var(--line);border-radius:24px}
.feature-detail-grid article p{color:#60788c;margin:0}
.security-sections{display:grid;gap:16px}
.security-sections article{display:grid;grid-template-columns:72px 1fr;gap:25px;padding:28px;border:1px solid var(--line);border-radius:22px}
.security-number{display:grid;place-items:center;width:54px;height:54px;border-radius:17px;background:var(--blue-deep);color:#fff;font-weight:900}
.security-sections p{color:#60788c;margin-bottom:0}
.policy-copy{max-width:860px}
.policy-copy h2{font-size:1.8rem;margin-top:42px}
.policy-copy p{color:#587186}
.support-card{padding:40px;border:1px solid var(--line);border-radius:28px;background:var(--soft)}
.support-card h2{font-size:clamp(1.6rem,4vw,3rem);word-break:break-word}
.download-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
.download-card{padding:34px;border:1px solid var(--line);border-radius:28px;background:#fff}
.primary-card{display:grid;grid-template-columns:120px 1fr;align-items:center;background:var(--soft)}
.primary-card img{width:110px}
.download-card p{color:#60788c}
.compatibility-note{margin-top:22px;padding:18px 22px;border-radius:18px;background:#f6f9fb;display:flex;gap:12px;flex-wrap:wrap}
.site-footer{border-top:1px solid var(--line);padding:58px 0 28px;background:#fff}
.footer-grid{display:grid;grid-template-columns:1fr auto;gap:60px;align-items:start}
.footer-company-logo{width:260px;margin-bottom:20px}
.footer-grid p{max-width:470px;color:#6a8194}
.footer-links{display:grid;grid-template-columns:repeat(2,auto);gap:12px 30px}
.footer-links a{text-decoration:none;color:#45627a}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:22px;margin-top:35px;color:#7b8e9d;font-size:.86rem}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.reveal.visible{opacity:1;transform:none}

@media (max-width:980px){
  .company-brand img{width:235px}
  .main-nav{position:absolute;left:20px;right:20px;top:72px;display:none;flex-direction:column;align-items:stretch;gap:4px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .main-nav a{padding:10px 12px}
  .nav-toggle{display:block}
  .hero-grid,.split-grid,.demo-grid{grid-template-columns:1fr}
  .hero-grid{padding-block:55px;gap:50px}
  .phone-stage{justify-content:flex-start}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .trust-grid>div:nth-child(2){border-right:0}
  .trust-grid>div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .feature-grid,.feature-grid-three{grid-template-columns:repeat(2,1fr)}
  .cta-card{grid-template-columns:70px 1fr}
  .cta-card .button{grid-column:2}
}
@media (max-width:650px){
  :root{--container:min(100% - 28px,1180px)}
  .nav-wrap{min-height:70px}
  .company-brand img{width:190px}
  .hashi-product-id{gap:12px;margin-bottom:18px}
  .hashi-mark{width:58px;height:58px}
  .product-name{font-size:.92rem}
  .product-tag{font-size:.78rem}
  .hero-title{font-size:clamp(2.8rem,12vw,4rem);line-height:1.01}
  h1{font-size:clamp(2.65rem,13vw,4rem)}
  .hero{overflow:visible}
  .hero-actions .button{width:100%}
  .status-pills{gap:6px}
  .trust-grid,.feature-grid,.feature-grid-three,.feature-detail-grid,.download-grid{grid-template-columns:1fr}
  .trust-grid>div{border-right:0;border-bottom:1px solid var(--line)}
  .trust-grid>div:last-child{border-bottom:0}
  .section{padding:78px 0}
  .split-grid,.demo-grid{gap:50px}
  .phone-shell,.phone-shell.compact{margin-inline:auto}
  .cta-card{grid-template-columns:1fr;text-align:center}
  .cta-card img{margin-inline:auto}
  .cta-card .button{grid-column:auto}
  .security-sections article{grid-template-columns:1fr}
  .primary-card{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
}


/* V1.2: privacy and download refinements */
.policy-updated{font-size:.9rem!important;color:#7890a3!important;margin-top:18px}
.privacy-section{padding-top:80px}
.privacy-grid{display:grid;grid-template-columns:230px minmax(0,1fr);gap:70px;align-items:start}
.privacy-nav{
  position:sticky;top:110px;display:grid;gap:8px;padding:20px;border:1px solid var(--line);
  border-radius:20px;background:#f8fbfd
}
.privacy-nav strong{margin-bottom:6px;color:var(--blue-deep)}
.privacy-nav a{text-decoration:none;color:#5d768a;font-size:.9rem;padding:4px 0}
.privacy-nav a:hover{color:var(--blue-deep)}
.privacy-copy{max-width:850px}
.privacy-copy section{scroll-margin-top:120px;padding:0 0 46px;margin-bottom:46px;border-bottom:1px solid var(--line)}
.privacy-copy section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.privacy-copy h2{margin-top:0}
.hash-box{margin-top:20px;padding:16px;border-radius:16px;background:#f6f9fb;border:1px solid var(--line)}
.hash-box strong,.hash-box code{display:block}
.hash-box code{margin-top:7px;word-break:break-all;color:#45627a;font-size:.82rem}
.install-note{margin-top:28px;padding:28px;border:1px solid var(--line);border-radius:24px;background:#f9fcfe}
.install-note p{margin-bottom:0;color:#60788c}
@media (max-width:850px){
  .privacy-grid{grid-template-columns:1fr;gap:34px}
  .privacy-nav{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
  .privacy-nav strong{grid-column:1/-1}
}
@media (max-width:520px){
  .privacy-nav{grid-template-columns:1fr}
}