/* ============ SarvFlow design system ============ */
:root{
  --bg:#0B0F19; --bg-2:#0E1322; --panel:#121829; --panel-2:#161E33;
  --line:rgba(255,255,255,.08); --line-2:rgba(255,255,255,.14);
  --text:#E8EAF0; --muted:#9AA3B8; --faint:#6B7488;
  --accent:#FF5A00; --accent-2:#FF8A3D; --accent-soft:rgba(255,90,0,.12);
  --green:#3DD68C; --amber:#FFC53D;
  --radius:18px; --radius-sm:12px;
  --maxw:1140px;
  --font:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img{max-width:100%;height:auto}
a{color:var(--accent-2);text-decoration:none}
a:hover{color:var(--accent)}
::selection{background:var(--accent);color:#fff}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.narrow{max-width:760px}
section{padding:88px 0}
section.tight{padding:56px 0}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:10px 16px;z-index:200;border-radius:0 0 8px 0}
.skip:focus{left:0}

/* ---------- header ---------- */
header.site{position:sticky;top:0;z-index:100;background:rgba(11,15,25,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:1.18rem;color:var(--text);letter-spacing:-.01em}
.brand img{width:32px;height:32px}
.brand:hover{color:var(--text)}
.brand span em{color:var(--accent);font-style:normal}
nav.links{display:flex;gap:26px;align-items:center}
nav.links a{color:var(--muted);font-size:.93rem;font-weight:500;transition:color .15s}
nav.links a:hover,nav.links a[aria-current="page"]{color:var(--text)}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;font-weight:600;
  padding:12px 22px;border-radius:999px;border:1px solid transparent;font-size:.95rem;cursor:pointer;
  transition:transform .15s,background .15s,box-shadow .15s;white-space:nowrap}
.btn:hover{background:var(--accent-2);color:#fff;transform:translateY(-1px);box-shadow:0 8px 24px rgba(255,90,0,.28)}
.btn.ghost{background:transparent;color:var(--text);border-color:var(--line-2)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent-2);box-shadow:none;background:var(--accent-soft)}
.btn.small{padding:9px 18px;font-size:.88rem}
.burger{display:none;background:none;border:0;cursor:pointer;padding:10px;color:var(--text)}
.burger svg{width:26px;height:26px}
.mobile-menu{display:none}

/* ---------- hero ---------- */
.hero{padding:110px 0 90px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-260px;right:-180px;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,0,.16),transparent 65%);pointer-events:none}
.hero::after{content:"";position:absolute;bottom:-300px;left:-200px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,0,.07),transparent 65%);pointer-events:none}
.kicker{display:inline-flex;align-items:center;gap:9px;color:var(--accent-2);font-size:.8rem;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;margin-bottom:22px}
.kicker::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
h1{font-size:clamp(2.5rem,6vw,4.4rem);line-height:1.06;letter-spacing:-.03em;font-weight:700;max-width:16ch}
h1 em{font-style:italic;color:var(--accent)}
.lede{font-size:clamp(1.08rem,2vw,1.3rem);color:var(--muted);max-width:56ch;margin-top:26px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:38px}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:44px;position:relative;z-index:1}
.badge{font-size:.82rem;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:7px 15px;background:rgba(255,255,255,.02)}
.badge b{color:var(--text);font-weight:600}

/* ---------- type & sections ---------- */
h2{font-size:clamp(1.7rem,3.6vw,2.5rem);letter-spacing:-.025em;line-height:1.15;font-weight:700;max-width:22ch}
h2 em{font-style:italic;color:var(--accent)}
h3{font-size:1.18rem;letter-spacing:-.01em;line-height:1.35}
.sub{color:var(--muted);max-width:62ch;margin-top:16px;font-size:1.05rem}
.num-tag{color:var(--faint);font-size:.82rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;margin-bottom:14px}

/* ---------- cards & grids ---------- */
.grid{display:grid;gap:18px;margin-top:44px}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.card{background:linear-gradient(180deg,var(--panel),var(--bg-2));border:1px solid var(--line);
  border-radius:var(--radius);padding:28px;transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--line-2);transform:translateY(-3px)}
.card h3{margin-bottom:10px}
.card p{color:var(--muted);font-size:.95rem}
.card .icon{width:44px;height:44px;border-radius:12px;background:var(--accent-soft);display:flex;
  align-items:center;justify-content:center;margin-bottom:18px;color:var(--accent-2)}
.card .icon svg{width:22px;height:22px}
.card a.more{display:inline-block;margin-top:14px;font-size:.9rem;font-weight:600}

/* ---------- status pills ---------- */
.pill{display:inline-flex;align-items:center;gap:6px;font-size:.72rem;font-weight:600;letter-spacing:.06em;
  text-transform:uppercase;border-radius:999px;padding:4px 11px;margin-bottom:12px}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.pill.live{color:var(--green);background:rgba(61,214,140,.1)}
.pill.dev{color:var(--amber);background:rgba(255,197,61,.1)}
.pill.explore{color:var(--accent-2);background:var(--accent-soft)}

/* ---------- nudge cards ---------- */
.nudge{background:linear-gradient(160deg,var(--panel-2),var(--panel));border:1px solid var(--line);
  border-radius:var(--radius);padding:26px;position:relative;overflow:hidden}
.nudge .label{font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);margin-bottom:14px}
.nudge p{font-size:1.06rem;color:var(--text);line-height:1.55}
.nudge .why{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:.86rem;color:var(--faint)}
.nudge .why b{color:var(--muted);font-weight:600}
.nudge.sponsored{border-color:rgba(255,197,61,.28)}
.nudge.sponsored .label{color:var(--amber)}

/* ---------- steps ---------- */
.steps{counter-reset:step;display:grid;gap:14px;margin-top:44px}
.step{display:flex;gap:22px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px 26px;align-items:flex-start}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);color:var(--accent);
  font-weight:700;font-size:.95rem;letter-spacing:.05em;padding-top:3px;min-width:30px}
.step h3{margin-bottom:6px}
.step p{color:var(--muted);font-size:.95rem}

/* ---------- split / panels ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.panel-dark{background:linear-gradient(180deg,var(--panel),var(--bg-2));border:1px solid var(--line);
  border-radius:calc(var(--radius) + 6px);padding:48px}
.checklist{list-style:none;margin-top:26px;display:grid;gap:13px}
.checklist li{display:flex;gap:12px;color:var(--muted);font-size:.98rem;align-items:flex-start}
.checklist li::before{content:"";flex:none;width:19px;height:19px;border-radius:50%;margin-top:3px;
  background:var(--accent-soft) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%23FF8A3D" stroke-width="3.4" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6 9 17l-5-5"/></svg>') center/11px no-repeat}
.checklist li b{color:var(--text)}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.stat{border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:rgba(255,255,255,.015)}
.stat .v{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:700;color:var(--accent);letter-spacing:-.02em;line-height:1.1}
.stat .l{color:var(--muted);font-size:.9rem;margin-top:10px}
.stat .src{color:var(--faint);font-size:.76rem;margin-top:8px}

/* ---------- article prose ---------- */
.prose{max-width:700px}
.prose h2{font-size:1.55rem;margin:46px 0 16px;max-width:none}
.prose h3{margin:34px 0 12px}
.prose p{margin:16px 0;color:#C6CBD8}
.prose ul,.prose ol{margin:16px 0 16px 4px;padding-left:22px;color:#C6CBD8}
.prose li{margin:9px 0}
.prose li::marker{color:var(--accent)}
.prose strong{color:var(--text)}
.prose blockquote{border-left:3px solid var(--accent);padding:6px 0 6px 20px;margin:26px 0;color:var(--muted);font-style:italic}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:.93rem}
.prose th{text-align:left;color:var(--text);border-bottom:2px solid var(--line-2);padding:10px 12px}
.prose td{color:var(--muted);border-bottom:1px solid var(--line);padding:10px 12px;vertical-align:top}
.article-head{padding:72px 0 0}
.article-meta{display:flex;gap:14px;align-items:center;color:var(--faint);font-size:.84rem;margin:18px 0 8px;flex-wrap:wrap}
.article-meta .cat{color:var(--accent-2);font-weight:600;letter-spacing:.1em;text-transform:uppercase;font-size:.74rem}
.backlink{display:inline-flex;align-items:center;gap:7px;color:var(--muted);font-size:.9rem;margin-bottom:26px}
.backlink:hover{color:var(--accent-2)}
.further{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px 24px;margin-top:40px}
.further h3{font-size:.95rem;margin-bottom:10px;color:var(--text)}
.further ul{margin:0}

/* ---------- research cards ---------- */
.r-card{display:flex;flex-direction:column;gap:12px}
.r-card .cat{font-size:.74rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-2)}
.r-card h3{font-size:1.22rem}
.r-card h3 a{color:var(--text)}
.r-card h3 a:hover{color:var(--accent-2)}
.r-card .read{margin-top:auto;font-size:.8rem;color:var(--faint)}

/* ---------- faq ---------- */
details.faq{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);margin-top:12px}
details.faq summary{cursor:pointer;padding:19px 22px;font-weight:600;font-size:1rem;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:16px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--accent);font-size:1.35rem;font-weight:400;flex:none;transition:transform .2s}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq .body{padding:0 22px 20px;color:var(--muted);font-size:.95rem}

/* ---------- family ---------- */
.family-card{text-align:left;position:relative}
.family-card .tag{position:absolute;top:22px;right:22px}

/* ---------- CTA band ---------- */
.band{background:linear-gradient(140deg,rgba(255,90,0,.14),rgba(255,90,0,.04) 55%,transparent);
  border:1px solid rgba(255,90,0,.22);border-radius:calc(var(--radius) + 8px);padding:64px 48px;text-align:center}
.band h2{margin:0 auto}
.band .sub{margin-left:auto;margin-right:auto}
.band .cta-row{justify-content:center}

/* ---------- footer ---------- */
footer.site{border-top:1px solid var(--line);padding:64px 0 40px;margin-top:40px;background:var(--bg-2)}
.f-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.f-grid h4{font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:16px}
.f-grid ul{list-style:none;display:grid;gap:10px}
.f-grid a{color:var(--muted);font-size:.92rem}
.f-grid a:hover{color:var(--accent-2)}
.f-brand p{color:var(--muted);font-size:.9rem;margin-top:14px;max-width:34ch}
.f-legal{margin-top:52px;padding-top:26px;border-top:1px solid var(--line);display:flex;justify-content:space-between;
  gap:18px;flex-wrap:wrap;color:var(--faint);font-size:.82rem}
.f-legal a{color:var(--faint)}
.f-legal a:hover{color:var(--accent-2)}

/* ---------- cookie banner ---------- */
.cookie{position:fixed;bottom:18px;left:18px;right:18px;max-width:440px;background:var(--panel-2);
  border:1px solid var(--line-2);border-radius:var(--radius);padding:20px 22px;z-index:150;
  box-shadow:0 18px 50px rgba(0,0,0,.5);display:none}
.cookie.show{display:block}
.cookie p{font-size:.86rem;color:var(--muted);margin-bottom:14px}
.cookie .row{display:flex;gap:10px}
.cookie .btn{padding:9px 16px;font-size:.85rem}
.cookie .btn.decline{background:transparent;border-color:var(--line-2);color:var(--muted)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .grid.c4{grid-template-columns:repeat(2,1fr)}
  .grid.c3{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:36px}
  .f-grid{grid-template-columns:1fr 1fr}
  nav.links{display:none}
  .nav .btn{display:none}
  .burger{display:block}
  .mobile-menu{display:block;position:fixed;inset:68px 0 auto 0;background:var(--bg-2);border-bottom:1px solid var(--line-2);
    padding:10px 24px 28px;z-index:99;transform:translateY(-8px);opacity:0;pointer-events:none;transition:.2s}
  .mobile-menu.open{transform:none;opacity:1;pointer-events:auto}
  .mobile-menu a{display:block;padding:14px 4px;color:var(--text);font-size:1.05rem;font-weight:500;border-bottom:1px solid var(--line)}
  .mobile-menu a:last-of-type{border-bottom:0}
  .mobile-menu .btn{margin-top:16px;width:100%;justify-content:center}
}
@media (max-width:640px){
  section{padding:64px 0}
  .hero{padding:76px 0 64px}
  .grid.c2,.grid.c3,.grid.c4{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .panel-dark{padding:32px 24px}
  .band{padding:44px 24px}
  .step{flex-direction:column;gap:8px}
  .f-grid{grid-template-columns:1fr}
  .f-legal{flex-direction:column}
  .cookie{left:12px;right:12px;bottom:12px}
}