/* ============================================================
   BitSpace — Oracle-inspired corporate site
   Palette: Oracle Red #C74634 / ink #161513 / warm grays
   ============================================================ */

:root{
  --red:#c74634;
  --red-dark:#a5392a;
  --red-soft:#fbeeec;
  --ink:#161513;
  --ink-2:#312d2a;
  --gray:#5b5650;
  --gray-2:#8a847c;
  --line:#e3e0db;
  --bg:#ffffff;
  --bg-soft:#f7f5f2;
  --bg-soft-2:#f0ede8;
  --navy:#1b2a4a;
  --max:1240px;
  --r:6px;
  --shadow:0 1px 2px rgba(0,0,0,.06),0 8px 24px rgba(0,0,0,.06);
  --shadow-lg:0 12px 40px rgba(0,0,0,.12);
  --font:"Oracle Sans",-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  font-size:16px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}

.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}
.center{text-align:center}
.eyebrow{
  color:var(--red);font-weight:700;font-size:.8rem;letter-spacing:.12em;
  text-transform:uppercase;margin-bottom:14px;
}
.lede{font-size:1.15rem;color:var(--gray);max-width:720px}

h1,h2,h3,h4{line-height:1.12;letter-spacing:-.01em;color:var(--ink);font-weight:700}
h1{font-size:clamp(2.4rem,5vw,3.7rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.7rem)}
h3{font-size:1.35rem}

section{padding:84px 0}
.section-soft{background:var(--bg-soft)}
.section-ink{background:var(--ink);color:#fff}
.section-ink h2,.section-ink h3{color:#fff}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-weight:600;font-size:.98rem;border-radius:var(--r);
  padding:13px 26px;border:1.5px solid transparent;cursor:pointer;
  transition:.18s ease;white-space:nowrap;
}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:var(--red-dark)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost-light:hover{background:#fff;color:var(--ink)}
.link-arrow{color:var(--red);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-arrow:hover{text-decoration:underline}
.link-arrow::after{content:"›";font-size:1.2em;line-height:1}

/* ---------- top nav ---------- */
.topbar{
  background:var(--ink);color:#cfcbc4;font-size:.8rem;
}
.topbar .wrap{display:flex;justify-content:flex-end;gap:22px;height:36px;align-items:center}
.topbar a:hover{color:#fff}

header.nav{
  position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:34px;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.32rem;letter-spacing:-.02em}
.logo .mark{
  width:30px;height:30px;border-radius:7px;background:var(--red);
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:1rem;
}
.logo b{color:var(--red)}
.nav-links{display:flex;gap:26px;margin-left:8px}
.nav-links a{font-weight:500;font-size:.95rem;color:var(--ink-2);padding:6px 0;position:relative}
.nav-links a:hover{color:var(--red)}
.nav-links a.active{color:var(--red)}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-cta .login{font-weight:600;font-size:.92rem}
.nav-cta .login:hover{color:var(--red)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--ink)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(1100px 600px at 88% -10%,rgba(199,70,52,.10),transparent 60%),
    linear-gradient(180deg,#fff 0%,var(--bg-soft) 100%);
  padding:96px 0 88px;
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero h1{margin-bottom:22px}
.hero h1 .accent{color:var(--red)}
.hero p.sub{font-size:1.22rem;color:var(--gray);margin-bottom:18px;max-width:560px}
.hero .ctas{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero .partner-badge{
  display:inline-flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:40px;padding:7px 16px 7px 8px;font-size:.85rem;font-weight:600;color:var(--ink-2);
  margin-bottom:26px;box-shadow:var(--shadow);
}
.partner-badge .dot{width:22px;height:22px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font-size:.7rem;font-weight:800}

/* hero visual: layered cloud card */
.hero-visual{position:relative}
.cloud-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);
  padding:26px;
}
.cloud-card h4{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--gray-2);margin-bottom:16px}
.region-row{display:flex;align-items:center;justify-content:space-between;padding:13px 0;border-bottom:1px solid var(--line)}
.region-row:last-child{border-bottom:0}
.region-row .l{display:flex;align-items:center;gap:12px;font-weight:600}
.region-row .flag{width:34px;height:24px;border-radius:4px;background:var(--bg-soft-2);display:grid;place-items:center;font-size:1.1rem}
.region-row .stat{font-weight:800;color:var(--red);font-size:1.05rem}
.region-row small{display:block;color:var(--gray-2);font-weight:500;font-size:.78rem}
.live-pill{display:inline-flex;align-items:center;gap:6px;font-size:.72rem;color:#1a7f37;font-weight:700}
.live-pill::before{content:"";width:7px;height:7px;border-radius:50%;background:#1a7f37;animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}

/* ---------- logos strip ---------- */
.trust{padding:40px 0;border-bottom:1px solid var(--line)}
.trust p{text-align:center;color:var(--gray-2);font-size:.85rem;font-weight:600;letter-spacing:.06em;margin-bottom:20px}
.trust-row{display:flex;justify-content:center;flex-wrap:wrap;gap:18px}
.trust-chip{border:1px solid var(--line);border-radius:40px;padding:9px 20px;font-weight:700;color:var(--ink-2);font-size:.9rem;background:#fff}

/* ---------- section heading block ---------- */
.shead{max-width:760px;margin-bottom:50px}
.shead.center{margin-left:auto;margin-right:auto}

/* ---------- two business lines ---------- */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.duo-card{
  border:1px solid var(--line);border-radius:12px;padding:36px;background:#fff;
  display:flex;flex-direction:column;transition:.2s;position:relative;overflow:hidden;
}
.duo-card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--red)}
.duo-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.duo-card .ic{font-size:1.8rem;margin-bottom:16px}
.duo-card h3{margin-bottom:12px}
.duo-card p{color:var(--gray);margin-bottom:20px}
.duo-card ul{margin-bottom:24px}
.duo-card li{padding:7px 0 7px 26px;position:relative;color:var(--ink-2);border-bottom:1px solid var(--bg-soft)}
.duo-card li::before{content:"✓";position:absolute;left:0;color:var(--red);font-weight:800}
.duo-card .foot{margin-top:auto}

/* ---------- feature grid ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.card{
  border:1px solid var(--line);border-radius:10px;padding:28px;background:#fff;transition:.2s;
}
.card:hover{box-shadow:var(--shadow);border-color:#d3cec7}
.card .ic{width:46px;height:46px;border-radius:10px;background:var(--red-soft);color:var(--red);
  display:grid;place-items:center;font-size:1.3rem;margin-bottom:16px}
.card h3{font-size:1.15rem;margin-bottom:10px}
.card p{color:var(--gray);font-size:.96rem}

/* ---------- stats band ---------- */
.stats{background:var(--ink);color:#fff}
.stats .grid-4{gap:0}
.stat-cell{padding:14px 26px;border-left:1px solid rgba(255,255,255,.14)}
.stat-cell:first-child{border-left:0}
.stat-cell .num{font-size:2.6rem;font-weight:800;color:#fff;letter-spacing:-.02em}
.stat-cell .num .red{color:#ff7a63}
.stat-cell .lbl{color:#b9b4ac;font-size:.92rem;margin-top:4px}

/* ---------- architecture diagram ---------- */
.arch{background:var(--bg-soft)}
.arch-stack{display:flex;flex-direction:column;gap:14px}
.arch-layer{
  background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 22px;
}
.arch-layer .lay-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.arch-layer .tag{font-size:.72rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#fff;background:var(--red);padding:4px 10px;border-radius:20px}
.arch-layer .lay-head h4{font-size:1.05rem}
.arch-layer.engine{border-color:var(--red);box-shadow:0 0 0 1px var(--red) inset}
.arch-row{display:flex;gap:10px;flex-wrap:wrap}
.node{
  flex:1;min-width:120px;background:var(--bg-soft);border:1px solid var(--line);border-radius:8px;
  padding:12px 14px;font-size:.86rem;font-weight:600;color:var(--ink-2);text-align:center;
}
.node small{display:block;color:var(--gray-2);font-weight:500;font-size:.74rem;margin-top:3px}
.node.hl{background:var(--red-soft);border-color:#e9c8c1;color:var(--red-dark)}
.arch-flow{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:14px}
.flow-step{background:var(--ink);color:#fff;border-radius:30px;padding:8px 18px;font-weight:700;font-size:.85rem}
.flow-arrow{color:var(--red);font-weight:800;font-size:1.2rem}

/* ---------- agent matrix chips ---------- */
.agent-chips{display:flex;flex-wrap:wrap;gap:10px}
.agent-chip{background:#fff;border:1px solid var(--line);border-radius:30px;padding:9px 16px;font-weight:600;font-size:.88rem;color:var(--ink-2)}
.agent-chip span{color:var(--red);margin-right:6px}

/* ---------- harness principles ---------- */
.principle{display:flex;gap:16px;align-items:flex-start;padding:22px;border:1px solid var(--line);border-radius:10px;background:#fff}
.principle .n{font-size:1.6rem;font-weight:800;color:var(--red);line-height:1;min-width:34px}
.principle h4{margin-bottom:6px}
.principle p{color:var(--gray);font-size:.93rem}

/* ---------- pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:stretch}
.price{border:1px solid var(--line);border-radius:12px;padding:30px 26px;background:#fff;display:flex;flex-direction:column}
.price.featured{border-color:var(--red);box-shadow:var(--shadow-lg);position:relative}
.price.featured .ribbon{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--red);color:#fff;font-size:.72rem;font-weight:800;letter-spacing:.05em;padding:5px 14px;border-radius:20px}
.price .tier{font-weight:700;font-size:1.15rem;margin-bottom:4px}
.price .amt{font-size:2.2rem;font-weight:800;margin:10px 0 2px}
.price .amt small{font-size:.95rem;color:var(--gray-2);font-weight:600}
.price .desc{color:var(--gray);font-size:.9rem;margin-bottom:18px;min-height:42px}
.price ul{margin-bottom:24px;flex:1}
.price li{padding:8px 0 8px 24px;position:relative;font-size:.92rem;color:var(--ink-2);border-bottom:1px solid var(--bg-soft)}
.price li::before{content:"✓";position:absolute;left:0;color:var(--red);font-weight:800}

/* ---------- verticals ---------- */
.vert-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.vert{border:1px solid var(--line);border-radius:10px;padding:22px;background:#fff;transition:.2s}
.vert:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.vert .ic{font-size:1.7rem;margin-bottom:12px}
.vert h4{font-size:1rem;margin-bottom:8px}
.vert p{font-size:.84rem;color:var(--gray);margin-bottom:12px}
.vert .tag{font-size:.78rem;font-weight:700;color:var(--red)}

/* ---------- model router table ---------- */
.tbl{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.tbl th,.tbl td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:.92rem}
.tbl th{background:var(--ink);color:#fff;font-weight:600;font-size:.85rem;letter-spacing:.03em}
.tbl tr:last-child td{border-bottom:0}
.tbl td.lv{font-weight:800;color:var(--red)}
.tbl tbody tr:hover{background:var(--bg-soft)}

/* ---------- split feature ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split.rev .txt{order:2}
.split .panel{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:32px}
.kv{display:flex;justify-content:space-between;padding:13px 0;border-bottom:1px solid var(--line);font-size:.95rem}
.kv:last-child{border-bottom:0}
.kv b{color:var(--red)}
.checklist li{padding:9px 0 9px 30px;position:relative;color:var(--ink-2)}
.checklist li::before{content:"✓";position:absolute;left:0;top:8px;color:var(--red);font-weight:800}

/* ---------- cta band ---------- */
.cta-band{background:linear-gradient(120deg,var(--red) 0%,var(--red-dark) 100%);color:#fff;text-align:center}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.9);max-width:640px;margin:0 auto 28px;font-size:1.1rem}
.cta-band .ctas{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- footer ---------- */
footer.site{background:var(--ink);color:#b9b4ac;padding:60px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:34px;margin-bottom:40px}
footer.site h5{color:#fff;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:16px}
footer.site a{display:block;color:#b9b4ac;padding:6px 0;font-size:.9rem}
footer.site a:hover{color:#fff}
.foot-brand .logo{color:#fff;margin-bottom:14px}
.foot-brand p{font-size:.88rem;line-height:1.6;max-width:280px}
.foot-loc{display:flex;gap:24px;margin-top:18px}
.foot-loc div{font-size:.85rem}
.foot-loc b{color:#fff;display:block}
.foot-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:.82rem}
.foot-bottom .badges{display:flex;gap:10px;flex-wrap:wrap}
.foot-bottom .badges span{border:1px solid rgba(255,255,255,.2);border-radius:20px;padding:4px 12px}

/* ---------- page hero (interior) ---------- */
.phero{background:linear-gradient(180deg,var(--ink) 0%,#241f1c 100%);color:#fff;padding:72px 0}
.phero .eyebrow{color:#ff8a72}
.phero h1{color:#fff;max-width:780px;margin-bottom:18px}
.phero p{color:#cfcbc4;font-size:1.18rem;max-width:680px}
.phero .ctas{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- misc ---------- */
.muted{color:var(--gray)}
.mb-s{margin-bottom:14px}.mb-m{margin-bottom:28px}
.tag-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.tag-list span{background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:4px 10px;font-size:.8rem;color:var(--gray)}

/* ---------- legal / prose pages ---------- */
.legal{max-width:820px;margin:0 auto;padding:64px 28px}
.legal h1{font-size:clamp(2rem,4vw,2.8rem);margin-bottom:10px}
.legal .updated{color:var(--gray-2);font-size:.9rem;margin-bottom:8px}
.legal .note{background:var(--red-soft);border:1px solid #e9c8c1;border-radius:8px;padding:12px 16px;font-size:.88rem;color:var(--red-dark);margin:18px 0 30px}
.legal h2{font-size:1.3rem;margin:34px 0 12px;padding-top:6px}
.legal h3{font-size:1.05rem;margin:20px 0 8px}
.legal p,.legal li{color:var(--ink-2);font-size:.98rem;line-height:1.7;margin-bottom:12px}
.legal ul{list-style:disc;padding-left:22px;margin-bottom:14px}
.legal li{margin-bottom:6px}
.legal a{color:var(--red);text-decoration:underline}
.legal .toc{background:var(--bg-soft);border:1px solid var(--line);border-radius:8px;padding:18px 22px;margin-bottom:30px}
.legal .toc a{display:inline-block;margin:4px 14px 4px 0;text-decoration:none;font-weight:600;font-size:.9rem}

/* ---------- agent catalogue: filters, cards, tools ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;justify-content:center}
.filter-chip{border:1.5px solid var(--line);background:#fff;color:var(--ink-2);font-family:inherit;
  font-weight:600;font-size:.9rem;border-radius:30px;padding:9px 18px;cursor:pointer;transition:.15s}
.filter-chip:hover{border-color:var(--red);color:var(--red)}
.filter-chip.active{background:var(--red);border-color:var(--red);color:#fff}
.agent-card{display:flex;flex-direction:column;position:relative}
.agent-card .cat-chip{align-self:flex-start;font-size:.72rem;font-weight:700;letter-spacing:.04em;
  color:var(--red-dark);background:var(--red-soft);border-radius:20px;padding:3px 10px;margin-bottom:10px}
.agent-card h3{font-size:1.12rem;margin-bottom:8px}
.agent-card p{color:var(--gray);font-size:.92rem;margin-bottom:14px;flex:1}
.tool-tags{display:flex;flex-wrap:wrap;gap:6px}
.tool-tags .tt-label{font-size:.74rem;color:var(--gray-2);font-weight:600;width:100%;margin-bottom:2px}
.tool-tags span:not(.tt-label){background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;
  padding:3px 9px;font-size:.78rem;color:var(--ink-2);font-weight:600}
.agent-card.hide{display:none}

/* ---------- cookie consent banner ---------- */
#cookie-banner{
  position:fixed;left:0;right:0;bottom:0;z-index:200;background:var(--ink);color:#e6e2db;
  border-top:3px solid var(--red);box-shadow:0 -6px 24px rgba(0,0,0,.2);
  display:none;
}
#cookie-banner.show{display:block}
#cookie-banner .cb-inner{max-width:var(--max);margin:0 auto;padding:18px 28px;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
#cookie-banner p{font-size:.9rem;margin:0;flex:1;min-width:260px;line-height:1.5}
#cookie-banner a{color:#ff8a72;text-decoration:underline}
#cookie-banner .cb-btns{display:flex;gap:10px}
#cookie-banner .cb-btns button{font-family:inherit;font-weight:600;font-size:.88rem;border-radius:6px;padding:10px 20px;cursor:pointer;border:1.5px solid rgba(255,255,255,.5);background:transparent;color:#fff}
#cookie-banner .cb-btns .accept{background:var(--red);border-color:var(--red)}
#cookie-banner .cb-btns .accept:hover{background:var(--red-dark)}
#cookie-banner .cb-btns .reject:hover{background:rgba(255,255,255,.12)}
@media(max-width:680px){#cookie-banner .cb-inner{flex-direction:column;align-items:flex-start}}

/* ---------- responsive ---------- */
@media(max-width:1000px){
  .hero-grid,.split,.duo,.grid-2{grid-template-columns:1fr}
  .split.rev .txt{order:0}
  .grid-3,.grid-4,.price-grid,.vert-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero-visual{display:none}
}
@media(max-width:680px){
  section{padding:60px 0}
  .nav-links,.topbar{display:none}
  .burger{display:flex}
  .nav-links.open{display:flex;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 28px;border-bottom:1px solid var(--line);gap:4px;box-shadow:var(--shadow)}
  .grid-3,.grid-4,.price-grid,.vert-grid,.foot-grid{grid-template-columns:1fr}
  .stat-cell{border-left:0;border-top:1px solid rgba(255,255,255,.14)}
  .stat-cell:first-child{border-top:0}
  .wrap{padding:0 20px}
}