/* ============ PROTON QUANTUM — SHARED DESIGN SYSTEM ============ */
:root{
  --bg:#060a14; --bg-raise:#0b1120; --bg-card:#0e1526;
  --line:rgba(126,160,220,.14); --line-hot:rgba(56,232,255,.45);
  --ink:#e8eefc; --ink-dim:#93a1bd;
  --accent:#38e8ff; --accent-2:#7a5cff;
  --display:"Syne",sans-serif; --body:"Instrument Sans",sans-serif;
  --max:1200px; --pad:clamp(20px,5vw,64px); --radius:18px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--accent);color:#04121a}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
img,svg,canvas{display:block;max-width:100%}
body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:9999;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E")}
.wrap{max-width:var(--max);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}

/* NAV */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);background:rgba(6,10,20,.72);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:12px;font-family:var(--display);font-weight:700;font-size:1.05rem;letter-spacing:.02em}
.logo .mark{width:34px;height:34px;flex:none}
.logo small{display:block;font-family:var(--body);font-weight:500;font-size:.62rem;letter-spacing:.28em;color:var(--ink-dim);text-transform:uppercase}
.nav-links{display:flex;gap:28px;align-items:center;font-size:.92rem;font-weight:500}
.nav-links a{color:var(--ink-dim);transition:color .2s}
.nav-links a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;font-size:.9rem;letter-spacing:.03em;padding:13px 26px;border-radius:999px;border:1px solid var(--line-hot);color:var(--accent);background:rgba(56,232,255,.06);transition:background .25s,color .25s,transform .25s,box-shadow .25s;cursor:pointer}
.btn:hover{background:var(--accent);color:#04121a;transform:translateY(-2px);box-shadow:0 8px 32px rgba(56,232,255,.35)}
.btn.solid{background:var(--accent);color:#04121a}
.btn.solid:hover{background:#7ef1ff;box-shadow:0 10px 40px rgba(56,232,255,.45)}
.nav .btn{padding:10px 22px}
.burger{display:none;background:none;border:none;cursor:pointer;padding:8px}
.burger span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;transition:transform .3s,opacity .3s}
@media (max-width:960px){
  .nav-links{position:fixed;top:72px;right:0;height:calc(100dvh - 72px);width:min(320px,84vw);flex-direction:column;align-items:flex-start;gap:8px;padding:36px 30px;background:var(--bg-raise);border-left:1px solid var(--line);transform:translateX(105%);transition:transform .35s cubic-bezier(.4,0,.2,1)}
  .nav-links a{font-size:1.12rem;padding:9px 0}
  .nav-links.open{transform:translateX(0)}
  .burger{display:block}
  .burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .burger.open span:nth-child(2){opacity:0}
  .burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* SECTIONS */
section{padding:clamp(80px,12vh,140px) 0;position:relative}
.sec-head{display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:baseline;margin-bottom:clamp(40px,6vw,70px)}
.sec-num{font-family:var(--display);font-weight:700;font-size:.95rem;color:var(--accent);border:1px solid var(--line-hot);border-radius:999px;padding:6px 14px;white-space:nowrap}
h2{font-family:var(--display);font-weight:700;font-size:clamp(1.9rem,4.4vw,3.2rem);line-height:1.08;letter-spacing:-.01em;max-width:22ch}
.sec-sub{grid-column:2;max-width:58ch;color:var(--ink-dim);margin-top:14px}
@media (max-width:640px){.sec-head{grid-template-columns:1fr}.sec-sub{grid-column:1}}
.reveal{opacity:0;transform:translateY(34px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.65,.25,1)}
.reveal.in{opacity:1;transform:none}
.grad{background:linear-gradient(92deg,var(--accent) 10%,#9db4ff 55%,var(--accent-2) 95%);-webkit-background-clip:text;background-clip:text;color:transparent}

/* CARDS */
.svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
@media (max-width:840px){.svc-grid{grid-template-columns:1fr}}
.svc{position:relative;padding:38px 34px;border-radius:var(--radius);background:var(--bg-card);border:1px solid var(--line);transition:border-color .3s,transform .3s,box-shadow .3s;overflow:hidden;display:block}
.svc:hover{border-color:var(--line-hot);transform:translateY(-4px);box-shadow:0 24px 60px rgba(0,0,0,.45)}
.svc::before{content:"";position:absolute;top:-60px;right:-60px;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(56,232,255,.18),transparent 70%);opacity:0;transition:opacity .35s}
.svc:hover::before{opacity:1}
.svc .idx{font-family:var(--display);font-weight:700;font-size:.85rem;color:var(--accent);letter-spacing:.15em}
.svc h3{font-family:var(--display);font-weight:700;font-size:1.35rem;margin:16px 0 12px}
.svc p{color:var(--ink-dim);font-size:.98rem}
.svc ul{margin-top:18px;list-style:none}
.svc li{font-size:.9rem;color:var(--ink-dim);padding:7px 0 7px 24px;position:relative;border-top:1px dashed var(--line)}
.svc li::before{content:"→";position:absolute;left:0;color:var(--accent)}
.svc .more{display:inline-block;margin-top:20px;font-family:var(--display);font-weight:700;font-size:.85rem;color:var(--accent)}

/* STEPS */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
@media (max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:540px){.steps{grid-template-columns:1fr}}
.step{padding:34px 28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(14,21,38,.5)}
.step:hover{background:rgba(56,232,255,.05)}
.step b{display:inline-block;font-family:var(--display);font-size:2.2rem;font-weight:800;background:linear-gradient(180deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.step h3{font-family:var(--display);font-size:1.06rem;font-weight:700;margin:10px 0 8px}
.step p{font-size:.9rem;color:var(--ink-dim)}

/* STATS */
.stats-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(90deg,rgba(56,232,255,.05),rgba(122,92,255,.06));padding:56px 0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
@media (max-width:800px){.stats{grid-template-columns:repeat(2,1fr)}}
.stats b{display:block;font-family:var(--display);font-weight:800;font-size:clamp(1.7rem,3.6vw,2.7rem);color:var(--ink)}
.stats b em{font-style:normal;color:var(--accent)}
.stats span{font-size:.85rem;color:var(--ink-dim)}
.stats-note{text-align:center;margin-top:26px;font-size:.85rem;color:var(--ink-dim)}

/* USE-CASE SLIDES */
.slides{display:grid;grid-auto-flow:column;grid-auto-columns:min(420px,86vw);gap:22px;overflow-x:auto;padding:6px 6px 26px;scroll-snap-type:x mandatory;scrollbar-width:thin;scrollbar-color:var(--accent) transparent}
.slide{scroll-snap-align:start;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-card);overflow:hidden;transition:border-color .3s,transform .3s}
.slide:hover{border-color:var(--line-hot);transform:translateY(-4px)}
.slide .art{aspect-ratio:16/9;background:var(--bg-raise);border-bottom:1px solid var(--line)}
.slide .art svg{width:100%;height:100%}
.slide .body{padding:26px 28px}
.slide .chip{display:inline-block;font-family:var(--display);font-weight:700;font-size:.78rem;letter-spacing:.12em;color:var(--accent);border:1px solid var(--line-hot);border-radius:999px;padding:4px 12px;margin-bottom:14px}
.slide h3{font-family:var(--display);font-weight:700;font-size:1.15rem;margin-bottom:8px}
.slide p{font-size:.9rem;color:var(--ink-dim)}

/* CTA */
.cta-band{position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--line-hot);padding:clamp(48px,7vw,90px) clamp(28px,6vw,80px);text-align:center;background:radial-gradient(120% 160% at 50% 0%,rgba(56,232,255,.12),rgba(122,92,255,.08) 45%,var(--bg-card) 100%)}
.cta-band h2{margin:0 auto 18px;max-width:24ch}
.cta-band p{color:var(--ink-dim);max-width:52ch;margin:0 auto 36px}

/* CONTACT + CHATBOT */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(36px,6vw,80px)}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr}}
.c-info h3{font-family:var(--display);font-size:1.1rem;margin-bottom:10px;color:var(--accent)}
.c-info p{color:var(--ink-dim);margin-bottom:26px}
.c-info a{color:var(--ink);border-bottom:1px solid var(--line-hot);transition:color .2s}
.c-info a:hover{color:var(--accent)}
.chatbox{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-card);display:flex;flex-direction:column;min-height:480px;overflow:hidden}
.chat-head{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line);background:rgba(56,232,255,.05)}
.chat-head .dot{width:10px;height:10px;border-radius:50%;background:#3dff9d;box-shadow:0 0 10px #3dff9d}
.chat-head b{font-family:var(--display);font-size:.95rem}
.chat-head span{font-size:.78rem;color:var(--ink-dim)}
.chat-log{flex:1;padding:22px;display:flex;flex-direction:column;gap:12px;overflow-y:auto;max-height:440px}
.msg{max-width:82%;padding:12px 16px;border-radius:16px;font-size:.94rem;line-height:1.5;animation:msgin .35s cubic-bezier(.2,.65,.25,1)}
.msg.bot{background:var(--bg-raise);border:1px solid var(--line);border-bottom-left-radius:4px;align-self:flex-start}
.msg.user{background:linear-gradient(120deg,rgba(56,232,255,.18),rgba(122,92,255,.18));border:1px solid var(--line-hot);border-bottom-right-radius:4px;align-self:flex-end}
@keyframes msgin{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.chat-input{display:flex;gap:10px;padding:16px;border-top:1px solid var(--line)}
.chat-input input{flex:1;padding:13px 16px;border-radius:12px;background:var(--bg-raise);border:1px solid var(--line);color:var(--ink);font-family:var(--body);font-size:1rem}
.chat-input input:focus{outline:none;border-color:var(--line-hot);box-shadow:0 0 0 3px rgba(56,232,255,.12)}
.chat-input button{padding:0 22px;border-radius:12px;border:1px solid var(--line-hot);background:var(--accent);color:#04121a;font-family:var(--display);font-weight:700;cursor:pointer;transition:background .2s}
.chat-input button:hover{background:#7ef1ff}
.chat-note{font-size:.75rem;color:var(--ink-dim);padding:0 16px 14px}
.chat-note a{color:var(--accent)}
.typing{display:inline-flex;gap:4px;padding:14px 18px}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--ink-dim);animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.25}40%{opacity:1}}

/* FOOTER */
footer.site{border-top:1px solid var(--line);padding:56px 0 40px;background:var(--bg-raise)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.foot-grid{grid-template-columns:1fr}}
footer.site h4{font-family:var(--display);font-size:.85rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-dim);margin-bottom:16px}
footer.site ul{list-style:none}
footer.site li{margin-bottom:10px;font-size:.92rem;color:var(--ink-dim)}
footer.site li a:hover{color:var(--accent)}
.foot-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.8rem;color:var(--ink-dim)}
.foot-bottom a{color:var(--ink-dim)}.foot-bottom a:hover{color:var(--accent)}

/* SUBPAGE HERO */
.page-hero{padding:170px 0 70px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(58% 60% at 72% 20%,rgba(122,92,255,.16),transparent 70%),radial-gradient(50% 55% at 15% 80%,rgba(56,232,255,.10),transparent 70%)}
.page-hero .wrap{position:relative}
.page-hero .kicker{display:inline-flex;align-items:center;gap:10px;font-size:.78rem;font-weight:600;letter-spacing:.3em;text-transform:uppercase;color:var(--accent);margin-bottom:22px}
.page-hero .kicker::before{content:"";width:36px;height:1px;background:var(--accent)}
.page-hero h1{font-family:var(--display);font-weight:800;font-size:clamp(2rem,6vw,4.2rem);line-height:1.06;letter-spacing:-.015em;max-width:18ch}
.page-hero p.lead{margin:26px 0 0;max-width:60ch;font-size:clamp(1rem,1.5vw,1.15rem);color:var(--ink-dim)}
.badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}
.badge{font-family:var(--display);font-weight:700;font-size:.78rem;letter-spacing:.08em;color:var(--accent);border:1px solid var(--line-hot);border-radius:999px;padding:6px 14px;background:rgba(56,232,255,.06)}

/* FEATURE GRID (subpages) */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:900px){.feat-grid{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.feat-grid{grid-template-columns:1fr}}
.feat{padding:28px 26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-card);transition:border-color .3s,transform .3s}
.feat:hover{border-color:var(--line-hot);transform:translateY(-3px)}
.feat .ico{width:44px;height:44px;margin-bottom:16px}
.feat h3{font-family:var(--display);font-size:1.05rem;font-weight:700;margin-bottom:8px}
.feat p{font-size:.9rem;color:var(--ink-dim)}

/* FLOW DIAGRAM (subpages) */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;align-items:stretch}
@media (max-width:900px){.flow{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.flow{grid-template-columns:1fr}}
.flow .node{padding:22px 20px;border:1px solid var(--line);border-radius:14px;background:var(--bg-card);position:relative}
.flow .node b{display:block;font-family:var(--display);font-size:.95rem;margin-bottom:6px;color:var(--accent)}
.flow .node span{font-size:.84rem;color:var(--ink-dim)}
.flow .node::after{content:"→";position:absolute;right:-14px;top:50%;transform:translateY(-50%);color:var(--accent);font-size:1.1rem;z-index:2}
.flow .node:last-child::after{content:""}
@media (max-width:900px){.flow .node::after{content:""}}

/* SPEC TABLE */
.spec{width:100%;border-collapse:collapse;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.spec th,.spec td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line);font-size:.93rem}
.spec th{font-family:var(--display);color:var(--accent);font-size:.85rem;letter-spacing:.08em;text-transform:uppercase;background:rgba(56,232,255,.05)}
.spec td:first-child{color:var(--ink);font-weight:600;white-space:nowrap}
.spec td{color:var(--ink-dim)}

/* LEGAL */
.legal{max-width:820px}
.legal h2{font-size:clamp(1.3rem,2.6vw,1.7rem);margin:44px 0 14px}
.legal h3{font-family:var(--display);font-size:1.05rem;margin:28px 0 10px;color:var(--accent)}
.legal p,.legal li{color:var(--ink-dim);font-size:.96rem;margin-bottom:12px}
.legal ul{padding-left:22px}
.legal table{width:100%;border-collapse:collapse;margin:16px 0}
.legal th,.legal td{border:1px solid var(--line);padding:10px 14px;font-size:.88rem;text-align:left;color:var(--ink-dim)}
.legal th{color:var(--ink);font-family:var(--display)}