/* HyperCluster's design system (from the approved preview, "HyperCluster Preview site/").
   One stylesheet for every app: the public site, Passport, HyperAI, HyperCloud, HyperCV and
   HyperAcademy. Each app serves this folder at /ui (ui/README.md). The page lives in one size
   container (.site): every layout rule uses @container, so a part looks the same wherever it is
   placed. Single dark look: the HyperCluster brand ground. */
@font-face{font-family:Poppins;font-style:normal;font-weight:400;font-display:swap;src:url(fonts/poppins-400.woff2) format('woff2')}
@font-face{font-family:Poppins;font-style:normal;font-weight:500;font-display:swap;src:url(fonts/poppins-500.woff2) format('woff2')}
@font-face{font-family:Poppins;font-style:normal;font-weight:600;font-display:swap;src:url(fonts/poppins-600.woff2) format('woff2')}
@font-face{font-family:Poppins;font-style:normal;font-weight:700;font-display:swap;src:url(fonts/poppins-700.woff2) format('woff2')}

:root{
  --bg:#050911; --head:#070c16; --card:#0e1420; --card-2:#111a2b; --field:#0a0f18; --line:#1e293b; --line-2:#2a3a55;
  --text:#e2e8f0; --muted:#94a3b8; --faint:#64748b; --blue:#2F8CFF; --link:#60a5fa; --link-2:#93c5fd;
  --good:#34d399; --wait:#fbbf24; --bad:#f87171;
  --good-bg:rgba(52,211,153,.14); --wait-bg:rgba(251,191,36,.12); --bad-bg:rgba(248,113,113,.12); --blue-bg:rgba(47,140,255,.14);
  --font:Poppins,'Segoe UI',system-ui,-apple-system,sans-serif; --mono:ui-monospace,'SF Mono',Menlo,Consolas,monospace;
  --r:16px; --r-sm:12px; --bar:0px;
  color-scheme:dark;
}
*{box-sizing:border-box}
html,body{margin:0;background:#03060c;color:var(--text);font-family:var(--font);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--link)} a:hover{color:var(--link-2)}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--link);outline-offset:2px}
[hidden]{display:none!important}
h1,h2,h3,h4{margin:0;line-height:1.2;text-wrap:balance}
h1{font-size:clamp(28px,7cqi,54px);font-weight:700;letter-spacing:-.02em}
h2{font-size:clamp(22px,4.2cqi,32px);font-weight:600;letter-spacing:-.01em}
h3{font-size:17px;font-weight:600}
h4{font-size:15px;font-weight:600}
p{margin:0;text-wrap:pretty}
.muted{color:var(--muted)} .small{font-size:13px} .tiny{font-size:12px} .num{font-variant-numeric:tabular-nums}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--link)}
.label{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.mono{font-family:var(--mono)}

/* ---------- the site container ---------- */
.site{container-type:inline-size;container-name:site;background:var(--bg);min-height:100vh;min-height:100dvh;margin:0 auto;display:flex;flex-direction:column}
main{flex:1;display:flex;flex-direction:column}
.page{display:flex;flex-direction:column;flex:1}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding-inline:20px}
@container site (min-width:720px){.wrap{padding-inline:32px}}
.section{padding-block:40px}
@container site (min-width:720px){.section{padding-block:64px}}
.section.tight{padding-block:24px}
.line-top{border-top:1px solid var(--line)}
.stack{display:flex;flex-direction:column;gap:var(--g,16px)}
.row{display:flex;align-items:center;gap:var(--g,12px)}
.row.wrapr{flex-wrap:wrap}
.row.top{align-items:flex-start}
.spread{justify-content:space-between}
.grow{flex:1;min-width:0}
.grid{display:grid;gap:var(--g,16px);grid-template-columns:minmax(0,1fr)}
@container site (min-width:600px){.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(2,minmax(0,1fr))}.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@container site (min-width:960px){.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}}
.split{display:grid;gap:32px;grid-template-columns:minmax(0,1fr)}
@container site (min-width:900px){.split{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:56px;align-items:center}.split.aside{grid-template-columns:minmax(0,1fr) 420px;align-items:start}}

/* ---------- parts ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.card.pad-l{padding:24px}
.card.flat{background:transparent}
.card.hl{border-color:rgba(52,211,153,.35)}
.card.blue{background:#10203a;border-color:#1f3a63}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 20px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--text);
  font-weight:600;font-size:15px;text-decoration:none;cursor:pointer;white-space:nowrap}
.btn:hover{border-color:var(--line-2);color:var(--text)}
.btn.primary{background:var(--blue);border-color:var(--blue);color:#050911}
.btn.primary:hover{background:var(--link);border-color:var(--link);color:#050911}
.btn.ghost{background:transparent;border-color:transparent;color:var(--link);padding:0 6px;min-height:40px}
.btn.ghost:hover{color:var(--link-2)}
.btn.sm{min-height:40px;padding:0 14px;font-size:14px}
.btn.block{width:100%}
.btn[disabled]{background:#1a2333;border-color:#1a2333;color:var(--faint);cursor:not-allowed}
.ibtn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--card);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;color:var(--text);text-decoration:none}
.pill{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;white-space:nowrap;line-height:1.5}
.pill.good{background:var(--good-bg);color:var(--good)} .pill.wait{background:var(--wait-bg);color:var(--wait)} .pill.bad{background:var(--bad-bg);color:var(--bad)}
.pill.blue{background:var(--blue-bg);color:var(--link)} .pill.grey{background:rgba(148,163,184,.14);color:var(--muted)}
.tile{width:42px;height:42px;border-radius:12px;background:var(--blue-bg);color:var(--link);display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.tile.good{background:var(--good-bg);color:var(--good)} .tile.wait{background:var(--wait-bg);color:var(--wait)}
.av{width:40px;height:40px;border-radius:50%;background:#1c3a63;color:#bfdbfe;display:inline-flex;align-items:center;justify-content:center;font-weight:600;flex-shrink:0;font-size:14px}
.note{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:12px;font-size:13px;line-height:1.5}
.note.wait{background:var(--wait-bg)} .note.wait svg{color:var(--wait)}
.note.bad{background:var(--bad-bg);border:1px solid rgba(248,113,113,.3)} .note.bad svg{color:var(--bad)}
.note.info{background:var(--blue-bg)} .note.info svg{color:var(--link)}
.note.good{background:var(--good-bg)} .note.good svg{color:var(--good)}
.note svg{flex-shrink:0;margin-top:1px}
.divider{height:1px;background:var(--line)}
.kv{display:flex;justify-content:space-between;gap:12px;font-size:14px}
.kv span:first-child{color:var(--muted);min-width:5em}
.kv b{font-weight:600}
field,.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:500}
.input,select.input{width:100%;height:50px;border-radius:12px;border:1px solid var(--line);background:var(--field);padding:0 14px;font-size:15px}
textarea.input{height:auto;min-height:90px;padding:12px 14px;resize:vertical}
.input[readonly]{color:var(--muted)}
.choice{display:flex;align-items:center;gap:12px;padding:12px 14px;min-height:62px;border-radius:14px;border:1px solid var(--line);background:var(--card);cursor:pointer}
.choice:has(input:checked){border-color:var(--link);background:rgba(47,140,255,.09)}
.choice input{width:20px;height:20px;accent-color:var(--blue);margin:0;flex-shrink:0}
.choice img{width:52px;height:52px;border-radius:10px;object-fit:cover}
.seg{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:4px;padding:4px;border:1px solid var(--line);border-radius:14px;background:var(--field)}
.seg button{height:40px;border:0;border-radius:10px;background:transparent;color:var(--muted);font-weight:600;font-size:14px;cursor:pointer;padding:0 8px}
.seg button[aria-pressed="true"]{background:rgba(47,140,255,.18);color:var(--text)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--text);font-size:13px;font-weight:500;text-decoration:none;cursor:pointer}
.chip[aria-pressed="true"]{border-color:var(--link);background:rgba(47,140,255,.12)}
.bar{height:8px;border-radius:999px;background:#1a2333;overflow:hidden}
.bar i{display:block;height:100%;background:var(--blue);border-radius:999px}
.toast{position:fixed;left:50%;bottom:calc(92px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);z-index:120;background:#0b1424;border:1px solid #22324d;padding:10px 16px;border-radius:12px;font-size:14px;box-shadow:0 14px 40px rgba(0,0,0,.5);max-width:calc(100vw - 32px)}
@media (prefers-reduced-motion:no-preference){.toast{animation:up .18s ease-out}@keyframes up{from{opacity:0;transform:translate(-50%,6px)}}}
.copybox{display:flex;align-items:center;gap:10px;padding:6px 6px 6px 14px;border:1px solid var(--line);border-radius:12px;background:var(--field)}
.copybox span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}
.copybox button{width:44px;height:44px;border-radius:10px;border:0;background:var(--blue);color:#050911;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.qr{width:128px;height:128px;padding:8px;border-radius:10px;background:#fff;flex-shrink:0}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:18px}
.steps li{display:flex;gap:14px;align-items:flex-start}
.steps .n{width:34px;height:34px;border-radius:50%;background:var(--blue);color:#050911;font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
@container site (min-width:900px){.steps.h{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}}
@container site (min-width:600px){.steps.h.four{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}}
@container site (min-width:1100px){.steps.h.four{grid-template-columns:repeat(4,minmax(0,1fr))}}
.feat{display:flex;gap:12px;align-items:flex-start}
.feat svg{color:var(--link);flex-shrink:0;margin-top:2px}
table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th{text-align:left;font-size:12px;font-weight:600;color:var(--muted);padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
table.t td{padding:12px;border-bottom:1px solid var(--line);vertical-align:top}
table.t td.r,table.t th.r{text-align:right}
.tscroll{overflow-x:auto}

/* ---------- header & footer ---------- */
.hdr{position:sticky;top:calc(var(--bar) + env(safe-area-inset-top,0px));z-index:50;height:64px;display:flex;align-items:center;gap:10px;padding:0 16px;background:var(--head);border-bottom:1px solid var(--line)}
@container site (min-width:900px){.hdr{height:68px;padding:0 28px;gap:12px}}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex-shrink:0}
.brand .mark{width:28px;height:28px}
.brand .word{height:20px;width:auto;display:none}
.brand .pname{font-weight:600;font-size:16px;white-space:nowrap}
.brand .sep{width:1px;height:24px;background:var(--line);display:none}
@container site (min-width:900px){.brand .word{display:block}.brand.public .mark{display:none}.brand .sep{display:block}.brand.app .mark{display:none}}
.brand.public .pname{display:block}
@container site (min-width:900px){.brand.public .pname{display:none}}
.nav{display:none;gap:24px;margin-left:28px}
.nav a{color:var(--muted);text-decoration:none;font-size:14px;font-weight:500;padding:8px 2px;white-space:nowrap}
.nav a[aria-current="page"],.nav a:hover{color:var(--text)}
@container site (min-width:1024px){.nav{display:flex}}
@container site (max-width:1199px){.nav{gap:14px;margin-left:18px}}
.hdr .right{margin-left:auto;display:flex;align-items:center;gap:8px}
.chip-bal{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:999px;background:var(--card);border:1px solid var(--line);color:var(--text);font-weight:600;font-size:13px;text-decoration:none;white-space:nowrap}
.chip-bal em{font-style:normal;color:var(--link)}
.hide-narrow{display:none!important}
@container site (min-width:720px){.hide-narrow{display:inline-flex!important}}
.only-narrow{display:inline-flex}
@container site (min-width:1024px){.only-narrow.nav-btn{display:none}}
.menu{position:sticky;top:calc(var(--bar) + 64px);z-index:49;background:var(--head);border-bottom:1px solid var(--line);padding:12px 16px 18px}
.menu a.m{display:flex;align-items:center;gap:12px;height:50px;color:var(--text);text-decoration:none;border-bottom:1px solid var(--line);font-weight:500}
.ftr{background:var(--head);border-top:1px solid var(--line)}
.ftr .cols{display:grid;gap:28px;grid-template-columns:minmax(0,1fr)}
@container site (min-width:900px){.ftr .cols{grid-template-columns:minmax(0,1.2fr) minmax(0,2fr)}}
.ftr nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 24px}
@container site (min-width:600px){.ftr nav{grid-template-columns:repeat(3,minmax(0,1fr))}}
.ftr nav a{color:var(--muted);text-decoration:none;font-size:14px;padding:6px 0}
.ftr nav a:hover{color:var(--text)}
.ftr-slim{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;padding:16px 20px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.ftr-slim a{color:var(--muted);text-decoration:none}
@container site (max-width:899px){.app-foot{display:none!important}}
.ftr-slim .grow{flex:1}

/* ---------- hero & images ---------- */
.hero-img{border-radius:24px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10}
@container site (min-width:900px){.hero-img{aspect-ratio:4/5}.hero-img.wide{aspect-ratio:4/3}}
.hero-img img{width:100%;height:100%;object-fit:cover}
.lead{font-size:16px;color:var(--muted);max-width:60ch}
@container site (min-width:900px){.lead{font-size:18px}}
.cta{display:flex;flex-wrap:wrap;gap:10px}
.proof{font-size:12px;color:var(--muted)}

/* product card */
.pcard{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.pcard img{width:100%;height:150px;object-fit:cover}
.pcard .body{padding:18px;display:flex;flex-direction:column;gap:12px;flex:1}
.pcard .price{font-size:20px;font-weight:700}
.pcard .push{flex:1}

/* flow (USDT -> HYPEC -> products) */
.flow{display:grid;gap:10px;grid-template-columns:minmax(0,1fr);align-items:center}
.flow .arrow{justify-self:center;color:var(--link);transform:rotate(90deg)}
@container site (min-width:900px){.flow{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr) auto minmax(0,1fr)}.flow .arrow{transform:none}}
.coin{width:28px;height:28px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:11px;color:#fff;flex-shrink:0}
.coin.usdt{background:#26a17b} .coin.hypec{background:var(--blue);color:#050911}

/* app shell */
.shell{display:flex;flex:1;min-height:0}
.side{display:none;width:240px;flex-shrink:0;background:var(--head);border-right:1px solid var(--line);padding:18px 12px;flex-direction:column;gap:4px}
@container site (min-width:900px){.side{display:flex}}
.side a{display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;border-radius:12px;color:var(--muted);text-decoration:none;font-size:14px;font-weight:500}
.side a svg{flex-shrink:0}
.side a span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side a[aria-current="page"]{background:var(--blue-bg);color:var(--text);font-weight:600}
.side a:hover{color:var(--text)}
.side .lab{margin:14px 14px 6px}
.shell-main{flex:1;min-width:0;display:flex;flex-direction:column}
.shell-head{display:flex;align-items:flex-end;gap:12px;flex-wrap:wrap;padding:22px 16px 6px}
.shell-head h1{font-size:clamp(24px,4cqi,34px)}
@container site (min-width:900px){.shell-head{padding:28px 32px 8px}}
.shell-body{padding:16px 16px 28px;display:flex;flex-direction:column;gap:18px;flex:1}
@container site (min-width:900px){.shell-body{padding:16px 32px 40px;gap:22px}}
.tabbar{position:sticky;bottom:0;z-index:40;display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:2px;background:var(--head);border-top:1px solid var(--line);padding:6px 6px calc(8px + env(safe-area-inset-bottom,0px))}
@container site (min-width:900px){.tabbar{display:none}}
.tabbar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-height:54px;color:var(--muted);text-decoration:none;font-size:11px;font-weight:500}
.tabbar a[aria-current="page"]{color:var(--link);font-weight:600}
.stat .v{font-size:26px;font-weight:700;letter-spacing:-.01em;line-height:1.15}
.stat .u{font-size:14px;font-weight:600;color:var(--link)}

/* tree */
.tree-head{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:var(--card);cursor:pointer;width:100%;text-align:left}
.tree-head[aria-expanded="true"]{background:rgba(47,140,255,.06)}
.tree-body{padding:0 6px}
.person{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}

/* chat */
.chat{display:flex;flex-direction:column;gap:14px}
.msg{max-width:min(620px,92%);padding:12px 14px;border-radius:16px;font-size:15px}
.msg.me{align-self:flex-end;background:#16325a;border-bottom-right-radius:4px}
.msg.ai{align-self:flex-start;background:var(--card);border:1px solid var(--line);border-bottom-left-radius:4px}
.msg img{border-radius:10px;max-height:180px;object-fit:cover;margin-bottom:8px}
.seen{display:flex;flex-direction:column;gap:6px;padding:10px 12px;border-radius:12px;background:var(--field);border:1px solid var(--line);font-size:13px;margin-bottom:10px}
.composer{display:flex;gap:8px;align-items:flex-end;padding:10px;border:1px solid var(--line);border-radius:16px;background:var(--card)}
.composer textarea{flex:1;min-height:44px;max-height:140px;border:0;background:transparent;resize:none;padding:10px 4px;outline:none}
/* questions and answers: native <details> in a .faq list (no script needed) */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:14px 2px;cursor:pointer;list-style:none;font-weight:600;font-size:16px;line-height:1.4}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";width:9px;height:9px;flex-shrink:0;margin:-4px 6px 0 0;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg)}
.faq details[open] summary::after{transform:rotate(-135deg);margin-top:4px}
.faq summary:hover::after{border-color:var(--text)}
.faq .a{display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding:0 2px 18px;color:var(--muted);max-width:72ch}
.faq .a .btn.ghost{padding:0}
.faq .a code{font-family:var(--mono);font-size:.9em;color:var(--text);overflow-wrap:anywhere}
@media (prefers-reduced-motion:no-preference){.faq summary::after{transition:transform .15s ease}}
/* Chinese pages: Poppins for Latin letters, then the system's Chinese fonts. */
:lang(zh){--font:Poppins,'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC','Source Han Sans SC',system-ui,sans-serif}