/* ===================== ZEPSU — design system ===================== */
:root{
  --bg:#eef1f6; --surface:#ffffff; --ink:#0b1526; --navy:#0a1a33; --navy-2:#0f2648;
  --muted:#566884; --line:rgba(11,27,52,.08); --line-2:rgba(11,27,52,.12);
  --brand:#2a6df4; --brand-2:#1b54d4; --ok:#15a34a;
  --r-xl:30px; --r-lg:22px; --r-md:16px;
  --shadow:0 28px 70px -28px rgba(11,27,52,.28), 0 10px 30px -22px rgba(11,27,52,.2);
  --shadow-sm:0 14px 40px -24px rgba(11,27,52,.3);
  --ease:cubic-bezier(.32,.72,0,1);
  --f-body:"Plus Jakarta Sans",system-ui,sans-serif;
  --f-disp:"Space Grotesk",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--f-body);background:var(--bg);color:var(--ink);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.container{width:min(1180px,92vw);margin:0 auto}
.narrow{width:min(840px,92vw)}

/* grain */
.grain{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.025;
  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='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

/* typography */
.display{font-family:var(--f-disp);font-weight:700;letter-spacing:-.025em;line-height:1.04;
  font-size:clamp(2.6rem,5.6vw,4.6rem)}
.h2{font-family:var(--f-disp);font-weight:700;letter-spacing:-.02em;line-height:1.1;
  font-size:clamp(1.9rem,3.6vw,2.9rem)}
.lead{font-size:clamp(1.05rem,1.5vw,1.22rem);color:var(--muted);max-width:42ch}
.eyebrow{display:inline-block;font-size:11px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--brand);background:rgba(42,109,244,.08);border:1px solid rgba(42,109,244,.16);
  padding:6px 12px;border-radius:999px;margin-bottom:20px}
.section-sub{color:var(--muted);font-size:1.08rem;max-width:56ch;margin:14px auto 0}

/* ===================== buttons ===================== */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--f-body);font-weight:600;
  font-size:.95rem;padding:11px 18px 11px 22px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:transform .5s var(--ease),background .4s var(--ease),box-shadow .5s var(--ease),color .3s;
  will-change:transform}
.btn:active{transform:scale(.975)}
.btn-lg{padding:14px 20px 14px 26px;font-size:1rem}
.btn-block{width:100%;justify-content:center}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 28px -12px rgba(42,109,244,.7)}
.btn-primary:hover{background:var(--brand-2);box-shadow:0 16px 36px -14px rgba(42,109,244,.75)}
.btn-ghost{background:rgba(11,27,52,.04);color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{background:rgba(11,27,52,.07)}
.btn-ico{display:grid;place-items:center;width:30px;height:30px;border-radius:999px;
  background:rgba(255,255,255,.18);transition:transform .5s var(--ease),background .4s}
.btn-ghost .btn-ico{background:rgba(11,27,52,.06)}
.btn-ico svg{width:16px;height:16px}
.btn:hover .btn-ico{transform:translate(2px,-1px) scale(1.06)}
.btn-primary:hover .btn-ico{background:rgba(255,255,255,.28)}

/* ===================== nav ===================== */
.nav-wrap{position:fixed;top:0;left:0;right:0;z-index:40;display:flex;justify-content:center;
  padding:18px 16px;transition:padding .5s var(--ease)}
.nav-wrap.scrolled{padding:10px 16px}
.glass{backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px)}
.nav{width:min(1120px,96vw);display:flex;align-items:center;gap:18px;
  background:rgba(255,255,255,.72);border:1px solid var(--line-2);border-radius:999px;
  padding:9px 9px 9px 20px;box-shadow:var(--shadow-sm)}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--f-disp);font-weight:700;
  letter-spacing:-.02em;font-size:1.16rem}
.brand-mark{width:26px;height:26px;border-radius:9px;background:
  linear-gradient(145deg,#2a6df4,#0a1a33);box-shadow:inset 0 1px 1px rgba(255,255,255,.4),0 6px 14px -6px rgba(42,109,244,.7);position:relative}
.brand-mark::after{content:"";position:absolute;inset:7px;border-radius:4px;border:1.5px solid rgba(255,255,255,.85);border-bottom-color:transparent;border-right-color:transparent;transform:rotate(45deg)}
.nav-links{list-style:none;display:flex;gap:4px;margin-left:8px}
.nav-links a{display:block;padding:8px 14px;border-radius:999px;font-weight:500;font-size:.94rem;
  color:var(--muted);transition:color .3s,background .3s}
.nav-links a:hover{color:var(--ink);background:rgba(11,27,52,.05)}
.nav-cta{margin-left:auto;display:flex;gap:8px}
.burger{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line-2);
  border-radius:999px;background:rgba(11,27,52,.03);position:relative;cursor:pointer}
.burger span{position:absolute;left:12px;right:12px;height:1.6px;background:var(--ink);border-radius:2px;
  transition:transform .5s var(--ease),opacity .3s}
.burger span:first-child{top:18px}.burger span:last-child{bottom:18px}
.nav-open .burger span:first-child{top:21px;transform:rotate(45deg)}
.nav-open .burger span:last-child{bottom:21px;transform:rotate(-45deg)}

/* mobile overlay */
.mobile-overlay{position:fixed;inset:0;z-index:39;display:flex;align-items:center;justify-content:center;
  background:rgba(244,246,250,.82);backdrop-filter:blur(26px);-webkit-backdrop-filter:blur(26px);
  opacity:0;visibility:hidden;transition:opacity .5s var(--ease),visibility .5s}
.nav-open .mobile-overlay{opacity:1;visibility:visible}
.mobile-inner{text-align:center;padding:24px}
.mobile-links{list-style:none;display:flex;flex-direction:column;gap:6px;margin-bottom:28px}
.mobile-links a{font-family:var(--f-disp);font-weight:600;font-size:2rem;letter-spacing:-.02em;
  padding:8px;color:var(--ink);opacity:0;transform:translateY(14px);
  transition:opacity .6s var(--ease),transform .6s var(--ease)}
.nav-open .mobile-links a{opacity:1;transform:none}
.nav-open .mobile-links li:nth-child(1) a{transition-delay:.08s}
.nav-open .mobile-links li:nth-child(2) a{transition-delay:.14s}
.nav-open .mobile-links li:nth-child(3) a{transition-delay:.2s}
.nav-open .mobile-links li:nth-child(4) a{transition-delay:.26s}
.mobile-cta{display:flex;flex-direction:column;gap:10px;max-width:280px;margin:0 auto}

/* ===================== bezel (double-bezel) ===================== */
.bezel{background:rgba(11,27,52,.045);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:7px;transition:transform .6s var(--ease),box-shadow .6s var(--ease)}
.bezel>*{background:var(--surface);border-radius:calc(var(--r-xl) - 7px);
  box-shadow:inset 0 1px 1px rgba(255,255,255,.8),var(--shadow-sm)}

/* ===================== hero ===================== */
.hero{position:relative;background:
  radial-gradient(130% 120% at 85% -10%,#12315f 0%,var(--navy) 42%,#071327 100%);
  color:#eaf0fb;padding:clamp(130px,16vh,180px) 0 clamp(70px,9vw,120px);overflow:hidden}
.hero-glow{position:absolute;top:-20%;right:-5%;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle,rgba(42,109,244,.55),transparent 62%);filter:blur(30px);opacity:.6;pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero .eyebrow{color:#9ec0ff;background:rgba(158,192,255,.1);border-color:rgba(158,192,255,.22)}
.hero .display{color:#f4f8ff}
.hero .accent{background:linear-gradient(100deg,#8fb4ff,#2a6df4);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{color:#b4c4de;margin-top:22px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
.hero .btn-ghost{background:rgba(255,255,255,.08);color:#eaf0fb;border-color:rgba(255,255,255,.16)}
.hero .btn-ghost:hover{background:rgba(255,255,255,.14)}
.hero-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:34px;color:#8ba0c2;font-size:.85rem;font-weight:500}
.hero-meta i{width:4px;height:4px;border-radius:50%;background:#44587c}

/* code compare visual */
.code-compare{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center;
  background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12)}
.code-core{background:#0a1526 !important;box-shadow:inset 0 1px 1px rgba(255,255,255,.08),0 20px 40px -24px #000 !important;
  border:1px solid rgba(255,255,255,.08);padding:0;overflow:hidden}
.code-head{display:flex;align-items:center;gap:6px;padding:11px 14px;border-bottom:1px solid rgba(255,255,255,.07);font-size:.8rem;color:#8ba0c2}
.code-head .dot{width:9px;height:9px;border-radius:50%;background:#2a3a57}
.code-head em{margin-left:6px;font-style:normal;font-family:var(--f-disp)}
.code-head .tag{margin-left:auto;font-size:10px;font-weight:600;padding:3px 9px;border-radius:999px;letter-spacing:.04em}
.tag-open{background:rgba(234,76,76,.14);color:#ff9a9a}
.tag-lock{background:rgba(21,163,74,.16);color:#6ee29b}
pre.code{font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:.76rem;line-height:1.75;
  padding:16px;color:#c7d4ea;white-space:pre-wrap;word-break:break-all}
.code .c-tag{color:#8fb4ff}.code .c-k{color:#c792ea}.code .c-fn{color:#82d7ff}
.code .c-s{color:#8fd89a}.code .c-v{color:#ffcb8a}.code .c-mut{color:#5c6f90}
.code--enc .c-enc{color:#44608f;display:block}
.code-arrow{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;
  background:rgba(42,109,244,.18);color:#9ec0ff;border:1px solid rgba(158,192,255,.2)}
.code-arrow svg{width:18px;height:18px}

/* ===================== sections ===================== */
.section{position:relative;z-index:2;padding:clamp(80px,11vw,140px) 0}
.section--alt{background:
  linear-gradient(180deg,transparent,rgba(11,27,52,.025) 12%,rgba(11,27,52,.025) 88%,transparent)}
.section--center{text-align:center;padding-top:200px}
.section-head{text-align:center;max-width:720px;margin:0 auto clamp(44px,6vw,70px)}

/* bento features */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.feat--wide{grid-column:span 2}
.feat-core{height:100%;padding:30px}
.feat:hover{transform:translateY(-4px)}
.feat-ico{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;margin-bottom:20px;
  background:linear-gradient(145deg,rgba(42,109,244,.14),rgba(42,109,244,.05));color:var(--brand);
  box-shadow:inset 0 1px 1px rgba(255,255,255,.7)}
.feat-ico svg{width:24px;height:24px}
.feat-core h3{font-family:var(--f-disp);font-size:1.22rem;font-weight:600;letter-spacing:-.01em;margin-bottom:8px}
.feat-core p{color:var(--muted);font-size:.98rem}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{position:relative;padding:34px 28px;border-radius:var(--r-lg);background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.step-n{font-family:var(--f-disp);font-size:2.4rem;font-weight:700;letter-spacing:-.03em;
  background:linear-gradient(145deg,var(--brand),#0a1a33);-webkit-background-clip:text;background-clip:text;color:transparent}
.step h3{font-family:var(--f-disp);font-size:1.18rem;font-weight:600;margin:14px 0 8px}
.step p{color:var(--muted);font-size:.97rem}

/* plans */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:start}
.plan-core{padding:32px 28px}
.plan--featured{background:linear-gradient(160deg,rgba(42,109,244,.16),rgba(42,109,244,.04))}
.plan--featured .plan-core{box-shadow:inset 0 1px 1px rgba(255,255,255,.9),0 30px 60px -30px rgba(42,109,244,.5)}
.plan--featured{transform:translateY(-8px)}
.plan-badge{display:inline-block;font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand);background:rgba(42,109,244,.1);border:1px solid rgba(42,109,244,.2);padding:4px 10px;border-radius:999px;margin-bottom:14px}
.plan-name{font-family:var(--f-disp);font-size:1.3rem;font-weight:600}
.plan-price{display:flex;align-items:baseline;gap:6px;margin:12px 0 22px}
.plan-price strong{font-family:var(--f-disp);font-size:2.4rem;letter-spacing:-.02em}
.plan-price span{color:var(--muted);font-size:.95rem}
.plan-list{list-style:none;display:flex;flex-direction:column;gap:11px;margin-bottom:26px}
.plan-list li{display:flex;align-items:center;gap:10px;font-size:.96rem;color:#33455f}
.plan-list svg{width:18px;height:18px;color:var(--brand);flex-shrink:0}

/* faq */
.faq{display:flex;flex-direction:column;gap:12px}
.faq-item{overflow:hidden}
.faq-item>summary{list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-core{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;cursor:pointer;
  font-family:var(--f-disp);font-weight:600;font-size:1.05rem}
.faq-core i{position:relative;width:16px;height:16px;flex-shrink:0}
.faq-core i::before,.faq-core i::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .4s var(--ease)}
.faq-core i::before{top:7px;left:0;right:0;height:2px}
.faq-core i::after{left:7px;top:0;bottom:0;width:2px}
.faq-item[open] .faq-core i::after{transform:scaleY(0)}
.faq-a{padding:0 24px 22px;color:var(--muted);font-size:.98rem}

/* contact */
.contact-core{padding:clamp(28px,4vw,48px)}
.contact-head{text-align:center;margin-bottom:28px}
.contact-head .section-sub{margin-top:12px}
.form{display:flex;flex-direction:column;gap:16px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field span{font-size:.86rem;font-weight:600;color:#33455f}
.field span em{color:var(--muted);font-weight:400;font-style:normal}
.field input,.field textarea{font-family:var(--f-body);font-size:1rem;color:var(--ink);
  background:rgba(11,27,52,.03);border:1px solid var(--line-2);border-radius:14px;padding:13px 15px;
  transition:border-color .3s,background .3s,box-shadow .3s;resize:vertical}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 4px rgba(42,109,244,.12)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.alert{padding:13px 16px;border-radius:14px;font-size:.95rem;font-weight:500;margin-bottom:6px}
.alert-ok{background:rgba(21,163,74,.1);color:#0f7a37;border:1px solid rgba(21,163,74,.22)}
.alert-err{background:rgba(234,76,76,.1);color:#c23a3a;border:1px solid rgba(234,76,76,.22)}

/* footer */
.footer{position:relative;z-index:2;background:var(--navy);color:#b4c4de;padding:70px 0 34px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer .brand{color:#fff}
.footer .brand-mark{box-shadow:inset 0 1px 1px rgba(255,255,255,.4)}
.footer-tag{margin-top:14px;font-size:.92rem;color:#8ba0c2;max-width:34ch}
.footer-col h4{color:#fff;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px}
.footer-col a{display:block;padding:5px 0;color:#9fb2cf;font-size:.95rem;transition:color .3s}
.footer-col a:hover{color:#fff}
.footer-base{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  padding-top:24px;font-size:.88rem;color:#7d93b4}
.to-top{color:#9fb2cf;transition:color .3s}.to-top:hover{color:#fff}

/* ===================== reveal ===================== */
[data-reveal]{opacity:0;transform:translateY(26px);filter:blur(6px);
  transition:opacity .8s var(--ease),transform .8s var(--ease),filter .8s var(--ease);
  transition-delay:var(--d,0ms)}
[data-reveal].in{opacity:1;transform:none;filter:none}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  [data-reveal]{opacity:1;transform:none;filter:none}
}

/* ===================== responsive ===================== */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:2}
  .bento,.steps,.plans{grid-template-columns:1fr 1fr}
  .feat--wide{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-links,.nav-cta{display:none}
  .burger{display:block}
  .bento,.steps,.plans,.form-row,.footer-grid{grid-template-columns:1fr}
  .feat--wide{grid-column:span 1}
  .plan--featured{transform:none}
  .code-compare{grid-template-columns:1fr}
  .code-arrow{transform:rotate(90deg);margin:0 auto}
}