/* ============================================================
   SHOPABLE REEL — CASE STUDY
   Author: Sazzad Hossain (developersazzad)
   Mobile-first · 3D concept · Vanilla JS + AJAX-flavoured demo
   ============================================================ */

/* ---------- 1. Tokens & reset ---------- */
:root{
  --bg:#06060b;
  --bg-2:#0a0a14;
  --panel:rgba(255,255,255,.045);
  --panel-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --txt:#eef1f8;
  --muted:#98a0b3;
  --muted-2:#6d7590;
  --violet:#7c3aed;
  --coral:#ff4d6d;
  --cyan:#22d3ee;
  --amber:#ffb35c;
  --green:#2fd575;
  --grad:linear-gradient(120deg,#7c3aed 0%,#ff4d6d 52%,#ffb35c 100%);
  --grad-soft:linear-gradient(120deg,rgba(124,58,237,.16),rgba(255,77,109,.16),rgba(255,179,92,.14));
  --r-sm:10px; --r-md:16px; --r-lg:24px; --r-xl:32px;
  --shadow-1:0 10px 30px rgba(0,0,0,.45);
  --shadow-2:0 24px 70px rgba(0,0,0,.6);
  --font:"Inter","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:"SF Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --nav-h:64px;
  --ease:cubic-bezier(.22,.9,.28,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 14px);-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--txt);font-family:var(--font);
  font-size:16px;line-height:1.65;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;color:inherit;background:none;border:none;cursor:pointer}
ul,ol{list-style:none}
::selection{background:rgba(255,77,109,.35);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0a0a12}
::-webkit-scrollbar-thumb{background:linear-gradient(#7c3aed,#ff4d6d);border-radius:8px;border:2px solid #0a0a12}

/* ---------- 2. Utilities ---------- */
.container{width:min(100% - 2.2rem,1180px);margin-inline:auto}
.section{position:relative;padding:clamp(64px,9vw,120px) 0}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.kicker{
  display:inline-flex;align-items:center;gap:.55rem;
  font-size:.72rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;
  color:var(--coral);margin-bottom:1rem;
}
.kicker::before{content:"";width:26px;height:2px;background:var(--grad);border-radius:2px}
.sec-title{font-size:clamp(1.7rem,5.4vw,2.9rem);font-weight:800;letter-spacing:-.02em;line-height:1.12}
.sec-lead{color:var(--muted);max-width:62ch;margin-top:1rem;font-size:clamp(.95rem,2.6vw,1.05rem)}
.sec-head{margin-bottom:clamp(2rem,5vw,3.4rem)}
.mono{font-family:var(--mono)}
.chip{
  display:inline-flex;align-items:center;gap:.45rem;padding:.42rem .8rem;
  border:1px solid var(--line);border-radius:999px;background:var(--panel);
  font-size:.76rem;font-weight:600;color:var(--muted);backdrop-filter:blur(8px);
}
.chip .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  padding:.85rem 1.5rem;border-radius:999px;font-weight:700;font-size:.9rem;
  border:1px solid transparent;transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s;
  position:relative;overflow:hidden;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 30px rgba(255,77,109,.28)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(255,77,109,.4)}
.btn-ghost{border-color:var(--line);color:var(--txt);background:var(--panel)}
.btn-ghost:hover{transform:translateY(-3px);background:var(--panel-2)}
.btn-sm{padding:.55rem 1.05rem;font-size:.8rem}

/* reveal on scroll */
.rv{opacity:0;transform:translateY(34px) rotateX(6deg);transform-origin:top center;transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:var(--d,0s)}
.rv.in{opacity:1;transform:none}

/* tilt + glare */
.tilt{transform-style:preserve-3d;will-change:transform}
.tilt .glare,.glare{
  pointer-events:none;position:absolute;inset:0;border-radius:inherit;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.14),transparent 45%);
  opacity:0;transition:opacity .3s;z-index:3;
}
.tilt:hover .glare,.glare.on{opacity:1}

/* framed screenshot */
.shot{
  position:relative;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);background:#0d0d16;box-shadow:var(--shadow-1);
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .3s,opacity .7s var(--ease);
}
.shot img{width:100%;height:auto;transition:transform .6s var(--ease)}
.shot:hover{transform:translateY(-6px) scale(1.012);box-shadow:var(--shadow-2);border-color:rgba(255,77,109,.4)}
.shot:hover img{transform:scale(1.03)}
.shot .zoom-hint{
  position:absolute;top:10px;right:10px;z-index:2;width:30px;height:30px;border-radius:9px;
  display:grid;place-items:center;background:rgba(6,6,11,.72);border:1px solid var(--line);
  font-size:.8rem;color:var(--muted);backdrop-filter:blur(6px);
}
.shot figcaption,.caption{
  padding:.7rem .95rem;font-size:.78rem;color:var(--muted);
  border-top:1px solid var(--line-soft);background:rgba(255,255,255,.03);
  display:flex;gap:.5rem;align-items:flex-start;line-height:1.45;
}
.shot figcaption b,.caption b{color:var(--txt);font-weight:700}
.tag{
  position:absolute;top:10px;left:10px;z-index:2;padding:.28rem .6rem;border-radius:8px;
  background:rgba(6,6,11,.78);border:1px solid var(--line);backdrop-filter:blur(6px);
  font-size:.62rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);
}

/* ---------- 3. Preloader ---------- */
#preloader{
  position:fixed;inset:0;z-index:200;background:var(--bg);
  display:grid;place-items:center;transition:opacity .6s var(--ease),visibility .6s;
}
#preloader.done{opacity:0;visibility:hidden}
.pl-wrap{text-align:center}
.pl-logo{
  width:74px;height:74px;margin:0 auto 1.1rem;border-radius:22px;background:var(--grad);
  display:grid;place-items:center;font-weight:900;font-size:1.5rem;color:#fff;
  box-shadow:0 0 0 1px rgba(255,255,255,.15),0 18px 50px rgba(124,58,237,.5);
  animation:plPulse 1.4s ease-in-out infinite;
}
.pl-bar{width:150px;height:3px;border-radius:3px;background:rgba(255,255,255,.1);margin:0 auto;overflow:hidden}
.pl-bar i{display:block;height:100%;width:40%;border-radius:3px;background:var(--grad);animation:plSlide 1s var(--ease) infinite}
.pl-txt{margin-top:.8rem;font-size:.72rem;letter-spacing:.3em;text-transform:uppercase;color:var(--muted-2)}
@keyframes plPulse{0%,100%{transform:scale(1) rotate(0)}50%{transform:scale(1.06) rotate(-3deg)}}
@keyframes plSlide{0%{transform:translateX(-100%)}100%{transform:translateX(380%)}}

/* ---------- 4. Progress + nav ---------- */
#progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--grad);z-index:120;box-shadow:0 0 12px rgba(255,77,109,.7)}
#nav{
  position:fixed;top:0;left:0;right:0;z-index:110;height:var(--nav-h);
  display:flex;align-items:center;
  transition:background .35s,border-color .35s,backdrop-filter .35s;
  border-bottom:1px solid transparent;
}
#nav.scrolled{background:rgba(6,6,11,.82);backdrop-filter:blur(14px);border-color:var(--line-soft)}
.nav-in{display:flex;align-items:center;gap:1rem;width:min(100% - 2.2rem,1180px);margin-inline:auto}
.logo{display:flex;align-items:center;gap:.6rem;font-weight:800;letter-spacing:-.01em}
.logo-mark{
  width:36px;height:36px;border-radius:11px;background:var(--grad);display:grid;place-items:center;
  box-shadow:0 6px 18px rgba(124,58,237,.45);position:relative;flex:none;
}
.logo-mark svg{width:17px;height:17px}
.logo small{display:block;font-size:.6rem;font-weight:700;letter-spacing:.18em;color:var(--muted-2);text-transform:uppercase}
.nav-links{display:none;align-items:center;gap:.2rem;margin-left:auto}
.nav-links a{
  padding:.5rem .8rem;border-radius:999px;font-size:.83rem;font-weight:600;color:var(--muted);
  transition:color .25s,background .25s;
}
.nav-links a:hover{color:var(--txt);background:var(--panel)}
.nav-links a.active{color:#fff;background:var(--panel-2)}
.nav-cta{margin-left:auto;display:none}
#burger{margin-left:auto;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--panel);display:grid;place-items:center;gap:5px}
#burger span{display:block;width:18px;height:2px;background:var(--txt);border-radius:2px;transition:transform .3s var(--ease),opacity .3s}
#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)}
#mmenu{
  position:fixed;inset:0;z-index:105;background:rgba(6,6,11,.97);backdrop-filter:blur(18px);
  display:flex;flex-direction:column;justify-content:flex-start;overflow-y:auto;
  padding:calc(var(--nav-h) + 22px) 1.4rem calc(1.4rem + env(safe-area-inset-bottom,0px));
  opacity:0;visibility:hidden;transition:opacity .4s var(--ease),visibility .4s;
}
#mmenu.open{opacity:1;visibility:visible}
#mmenu a{
  font-size:clamp(1.02rem,4.6vw,1.35rem);font-weight:800;padding:.58rem .2rem;letter-spacing:-.01em;
  border-bottom:1px solid var(--line-soft);display:flex;justify-content:space-between;align-items:center;
  opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease);
}
#mmenu.open a{opacity:1;transform:none}
#mmenu a i{font-style:normal;color:var(--muted-2);font-size:.66rem;font-family:var(--mono)}
#mmenu .mm-foot{margin-top:1.2rem;display:flex;gap:.7rem;flex-wrap:wrap}

/* ---------- 5. Hero ---------- */
#hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;padding:calc(var(--nav-h) + 48px) 0 72px;overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5}
.orb-1{width:46vw;height:46vw;min-width:300px;min-height:300px;background:#7c3aed;top:-12%;left:-18%;animation:orbFloat 12s ease-in-out infinite}
.orb-2{width:38vw;height:38vw;min-width:260px;min-height:260px;background:#ff4d6d;bottom:-14%;right:-14%;animation:orbFloat 14s ease-in-out infinite reverse}
.orb-3{width:24vw;height:24vw;min-width:180px;min-height:180px;background:#22d3ee;top:38%;right:22%;opacity:.22;animation:orbFloat 10s ease-in-out infinite 2s}
@keyframes orbFloat{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(4%,6%) scale(1.12)}}
.hero-grid-floor{
  position:absolute;left:-30%;right:-30%;bottom:-6%;height:46%;
  background:
    repeating-linear-gradient(90deg,rgba(124,58,237,.22) 0 1px,transparent 1px 70px),
    repeating-linear-gradient(0deg,rgba(255,77,109,.18) 0 1px,transparent 1px 54px);
  transform:perspective(600px) rotateX(64deg);transform-origin:top center;
  mask-image:linear-gradient(to bottom,transparent,#000 30%,transparent 92%);
  -webkit-mask-image:linear-gradient(to bottom,transparent,#000 30%,transparent 92%);
  animation:floorMove 9s linear infinite;
}
@keyframes floorMove{0%{background-position:0 0,0 0}100%{background-position:0 0,0 54px}}
.hero-noise{position:absolute;inset:0;opacity:.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E")}

.hero-in{position:relative;z-index:2;display:grid;gap:2.6rem}
.hero-copy{max-width:640px}
.hero-badge{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.4rem}
.hero-title{font-size:clamp(2.6rem,10.5vw,5.2rem);font-weight:900;letter-spacing:-.035em;line-height:1.02}
.hero-title .line{display:block;overflow:hidden}
.hero-title .line i{font-style:normal;display:block;transform:translateY(110%);animation:lineUp .9s var(--ease) forwards}
.hero-title .line:nth-child(2) i{animation-delay:.12s}
@keyframes lineUp{to{transform:translateY(0)}}
.hero-sub{color:var(--muted);margin-top:1.2rem;font-size:clamp(.95rem,2.8vw,1.08rem);max-width:52ch}
.hero-sub b{color:var(--txt)}
.hero-meta{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.5rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.9rem}
.hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:.8rem;margin-top:2.4rem}
.hstat{
  padding:1rem 1.1rem;border-radius:var(--r-md);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(10px);position:relative;overflow:hidden;
}
.hstat b{display:block;font-size:clamp(1.35rem,4.6vw,1.8rem);font-weight:800;letter-spacing:-.02em}
.hstat span{font-size:.68rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2)}
.hstat::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad)}

/* 3D scene */
.hero-scene{
  position:relative;height:clamp(400px,112vw,560px);
  perspective:1200px;perspective-origin:50% 42%;
}
.scene-pivot{position:absolute;inset:0;transform-style:preserve-3d;transform:rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform .25s ease-out}
.orbit{position:absolute;inset:0}
.orbit-card{
  position:absolute;left:50%;top:50%;width:clamp(96px,26vw,150px);aspect-ratio:9/16.2;border-radius:14px;overflow:hidden;
  border:1px solid rgba(255,255,255,.16);box-shadow:0 18px 44px rgba(0,0,0,.55);
  transform:translate(-50%,-50%);will-change:transform,filter,opacity;background:#111;
}
.orbit-card img{width:100%;height:100%;object-fit:cover}
.phone{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) translateZ(60px);
  width:clamp(196px,54vw,268px);aspect-ratio:9/18.6;z-index:50;
  border-radius:34px;padding:9px;background:linear-gradient(160deg,#2b2b3a,#0c0c14 40%,#232332);
  box-shadow:0 0 0 1.5px rgba(255,255,255,.14),0 40px 90px rgba(0,0,0,.7),0 0 90px rgba(124,58,237,.28);
}
.phone::before{content:"";position:absolute;top:14px;left:50%;transform:translateX(-50%);width:74px;height:16px;border-radius:999px;background:#05050a;z-index:4}
.phone-screen{position:relative;width:100%;height:100%;border-radius:26px;overflow:hidden;background:#000}
.phone-screen img{width:100%;height:100%;object-fit:cover}
.phone-glow{position:absolute;inset:-14%;border-radius:50%;background:radial-gradient(closest-side,rgba(124,58,237,.4),transparent 70%);z-index:-1;filter:blur(10px)}
.float-chip{
  position:absolute;padding:.55rem .85rem;border-radius:14px;background:rgba(10,10,18,.8);
  border:1px solid var(--line);backdrop-filter:blur(10px);font-size:.72rem;font-weight:700;
  display:flex;align-items:center;gap:.45rem;box-shadow:var(--shadow-1);white-space:nowrap;z-index:60;
  animation:chipFloat 6s ease-in-out infinite;
}
.float-chip i{font-style:normal;font-size:.95rem}
.fc-1{top:8%;left:2%}
.fc-2{top:22%;right:0;animation-delay:1.4s}
.fc-3{bottom:14%;left:-2%;animation-delay:2.6s}
.fc-4{bottom:4%;right:6%;animation-delay:.8s}
@keyframes chipFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.scroll-hint{
  position:absolute;left:50%;bottom:18px;transform:translateX(-50%);z-index:5;
  display:flex;flex-direction:column;align-items:center;gap:.4rem;color:var(--muted-2);
  font-size:.62rem;letter-spacing:.28em;text-transform:uppercase;
}
.scroll-hint .mouse{width:22px;height:34px;border:2px solid var(--muted-2);border-radius:12px;position:relative}
.scroll-hint .mouse::after{content:"";position:absolute;top:6px;left:50%;width:3px;height:7px;margin-left:-1.5px;border-radius:3px;background:var(--coral);animation:wheel 1.6s ease-in-out infinite}
@keyframes wheel{0%{transform:translateY(0);opacity:1}70%{transform:translateY(10px);opacity:0}100%{opacity:0}}

/* ---------- 6. Marquee ---------- */
.marquee{border-block:1px solid var(--line-soft);background:linear-gradient(90deg,rgba(124,58,237,.08),rgba(255,77,109,.08));overflow:hidden;padding:.95rem 0}
.mq-track{display:flex;gap:2.4rem;width:max-content;animation:mq 26s linear infinite;align-items:center}
.marquee:hover .mq-track{animation-play-state:paused}
.mq-track span{font-size:.82rem;font-weight:800;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:2.4rem;white-space:nowrap}
.mq-track span::after{content:"◆";color:var(--coral);font-size:.6rem}
@keyframes mq{to{transform:translateX(-50%)}}

/* ---------- 7. Overview ---------- */
.ov-grid{display:grid;gap:1.4rem}
.ov-card{
  border-radius:var(--r-lg);border:1px solid var(--line);padding:clamp(1.3rem,4vw,2.2rem);
  background:linear-gradient(165deg,rgba(255,255,255,.055),rgba(255,255,255,.015));position:relative;overflow:hidden;
}
.ov-card h3{font-size:1.15rem;font-weight:800;margin-bottom:.8rem;display:flex;align-items:center;gap:.6rem}
.ov-card h3 i{font-style:normal;width:34px;height:34px;flex:none;border-radius:10px;display:grid;place-items:center;background:var(--grad-soft);border:1px solid var(--line)}
.ov-card p{color:var(--muted);font-size:.93rem}
.ov-card p + p{margin-top:.7rem}
.ov-card p b{color:var(--txt)}
.fact-list{display:grid;gap:.65rem;margin-top:.4rem}
.fact-list li{display:flex;gap:.8rem;align-items:baseline;font-size:.9rem;color:var(--muted);border-bottom:1px dashed var(--line-soft);padding-bottom:.65rem}
.fact-list li:last-child{border:none;padding-bottom:0}
.fact-list b{color:var(--txt);min-width:96px;font-weight:700;font-size:.78rem;letter-spacing:.1em;text-transform:uppercase}
.quote{
  margin-top:1.4rem;padding:1.3rem 1.4rem;border-left:3px solid var(--coral);border-radius:0 var(--r-md) var(--r-md) 0;
  background:var(--grad-soft);font-size:1.02rem;font-weight:600;line-height:1.6;
}
.quote small{display:block;margin-top:.6rem;color:var(--muted-2);font-weight:600;font-size:.75rem;letter-spacing:.12em;text-transform:uppercase}

/* ---------- 8. Problem / Solution ---------- */
.ps-grid{display:grid;gap:1.2rem}
.ps-card{border-radius:var(--r-lg);padding:clamp(1.3rem,4vw,2rem);border:1px solid var(--line);position:relative;overflow:hidden}
.ps-card.problem{background:linear-gradient(160deg,rgba(255,77,109,.09),rgba(255,255,255,.02))}
.ps-card.solution{background:linear-gradient(160deg,rgba(47,213,117,.08),rgba(255,255,255,.02))}
.ps-card h3{font-size:1.2rem;font-weight:800;margin-bottom:1rem;display:flex;align-items:center;gap:.6rem}
.ps-card.problem h3 em{font-style:normal;color:var(--coral)}
.ps-card.solution h3 em{font-style:normal;color:var(--green)}
.ps-list{display:grid;gap:.8rem}
.ps-list li{display:flex;gap:.75rem;font-size:.92rem;color:var(--muted);align-items:flex-start}
.ps-list li i{font-style:normal;flex:none;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;font-size:.72rem;font-weight:900;margin-top:2px}
.ps-card.problem .ps-list i{background:rgba(255,77,109,.16);color:var(--coral);border:1px solid rgba(255,77,109,.35)}
.ps-card.solution .ps-list i{background:rgba(47,213,117,.14);color:var(--green);border:1px solid rgba(47,213,117,.35)}
.ps-list b{color:var(--txt)}

/* ---------- 9. Flow ---------- */
.flow{position:relative;display:grid;gap:2.6rem}
.flow::before{content:"";position:absolute;left:26px;top:20px;bottom:20px;width:2px;background:linear-gradient(#7c3aed,var(--coral),var(--amber));opacity:.45}
.step{position:relative;padding-left:70px}
.step-num{
  position:absolute;left:0;top:0;width:54px;height:54px;border-radius:16px;
  background:var(--bg-2);border:1px solid var(--line);display:grid;place-items:center;
  font-weight:900;font-size:1.15rem;color:var(--coral);box-shadow:0 0 0 6px var(--bg),0 12px 30px rgba(0,0,0,.5);
  transform:rotate(-6deg);transition:transform .35s var(--ease);
}
.step:hover .step-num{transform:rotate(0) scale(1.08)}
.step h3{font-size:clamp(1.15rem,3.6vw,1.5rem);font-weight:800;letter-spacing:-.01em}
.step h3 span{color:var(--muted-2);font-size:.75rem;font-weight:700;letter-spacing:.2em;text-transform:uppercase;display:block;margin-bottom:.3rem}
.step p{color:var(--muted);font-size:.93rem;margin-top:.6rem;max-width:64ch}
.step p code{font-family:var(--mono);font-size:.82em;background:rgba(124,58,237,.16);border:1px solid rgba(124,58,237,.35);color:#c9b9ff;padding:.12em .45em;border-radius:6px}
.step-shots{display:grid;gap:1rem;margin-top:1.3rem;grid-template-columns:1fr}
.step-shots.two-sm{grid-template-columns:1fr 1fr}

/* ---------- 10. Features ---------- */
.feat-grid{display:grid;gap:1.1rem;grid-template-columns:1fr}
.feat{
  border-radius:var(--r-lg);border:1px solid var(--line);padding:1.5rem 1.4rem;position:relative;overflow:hidden;
  background:linear-gradient(165deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  transition:transform .4s var(--ease),border-color .3s,box-shadow .4s,opacity .6s var(--ease);
}
.feat:hover{transform:translateY(-6px);border-color:rgba(124,58,237,.45);box-shadow:0 22px 60px rgba(0,0,0,.5)}
.feat::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);opacity:0;transition:opacity .3s}
.feat:hover::before{opacity:1}
.feat-ico{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:1.25rem;
  background:var(--grad-soft);border:1px solid var(--line);margin-bottom:1rem;
}
.feat h3{font-size:1.02rem;font-weight:800;margin-bottom:.5rem}
.feat p{font-size:.86rem;color:var(--muted)}
.feat ul{margin-top:.7rem;display:grid;gap:.35rem}
.feat ul li{font-size:.8rem;color:var(--muted);padding-left:1.1rem;position:relative}
.feat ul li::before{content:"→";position:absolute;left:0;color:var(--cyan);font-size:.72rem}
.feat .feat-tag{position:absolute;top:1.2rem;right:1.2rem;font-size:.6rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2);border:1px solid var(--line);padding:.25rem .55rem;border-radius:7px}

/* ---------- 11. Demo ---------- */
#demo .demo-wrap{
  border-radius:var(--r-xl);border:1px solid var(--line);overflow:hidden;position:relative;
  background:radial-gradient(120% 90% at 50% 0%,rgba(124,58,237,.16),rgba(6,6,11,.4) 60%),#08080f;
}
.demo-head{padding:1.4rem 1.4rem 1rem;display:flex;flex-wrap:wrap;gap:.8rem;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line-soft)}
.demo-head h3{font-size:1.05rem;font-weight:800}
.demo-head p{font-size:.78rem;color:var(--muted-2);width:100%}
.demo-nav{display:flex;gap:.5rem}
.demo-nav button{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--panel);
  display:grid;place-items:center;font-size:1rem;transition:background .25s,transform .25s;
}
.demo-nav button:hover{background:var(--panel-2);transform:scale(1.06)}
.demo-track{
  display:flex;gap:1rem;overflow-x:auto;padding:1.6rem 1.4rem 1.9rem;
  scroll-snap-type:x mandatory;scrollbar-width:none;cursor:grab;
}
.demo-track::-webkit-scrollbar{display:none}
.demo-track.dragging{cursor:grabbing;scroll-snap-type:none}
.reel-card{
  flex:none;width:clamp(168px,46vw,212px);aspect-ratio:9/16.4;border-radius:18px;overflow:hidden;position:relative;
  border:1px solid var(--line);box-shadow:0 16px 40px rgba(0,0,0,.5);scroll-snap-align:center;
  transition:transform .45s var(--ease),box-shadow .45s,opacity .6s var(--ease);cursor:pointer;background:#101018;
}
.reel-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.reel-card:hover{transform:translateY(-8px) rotateX(4deg);box-shadow:0 26px 60px rgba(0,0,0,.65),0 0 40px rgba(124,58,237,.25)}
.reel-card:hover img{transform:scale(1.06)}
.reel-card .rc-views{
  position:absolute;top:10px;left:10px;display:flex;align-items:center;gap:.35rem;
  background:rgba(4,4,8,.66);backdrop-filter:blur(6px);border:1px solid var(--line);
  padding:.25rem .55rem;border-radius:999px;font-size:.68rem;font-weight:700;
}
.reel-card .rc-play{
  position:absolute;inset:0;margin:auto;width:52px;height:52px;border-radius:50%;
  background:rgba(4,4,8,.55);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.3);
  display:grid;place-items:center;font-size:1rem;opacity:0;transform:scale(.7);transition:all .35s var(--ease);
}
.reel-card:hover .rc-play{opacity:1;transform:scale(1)}
.reel-card .rc-fade{position:absolute;inset:auto 0 0 0;height:46%;background:linear-gradient(transparent,rgba(4,4,8,.88));pointer-events:none}
.demo-hint{text-align:center;padding:0 1rem 1.5rem;color:var(--muted-2);font-size:.76rem}
.demo-hint b{color:var(--coral)}

/* viewer modal */
#viewer{
  position:fixed;inset:0;z-index:150;background:rgba(2,2,4,.96);backdrop-filter:blur(10px);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .4s var(--ease),visibility .4s;
}
#viewer.open{opacity:1;visibility:visible}
.vw-stage{position:relative;width:100%;height:100%;display:flex;align-items:center;justify-content:center;perspective:1000px}
.vw-side{
  position:absolute;top:50%;width:clamp(120px,30vw,220px);aspect-ratio:9/14;border-radius:16px;overflow:hidden;
  border:1px solid var(--line);transform:translateY(-50%);filter:blur(3px) brightness(.42) saturate(.8);
  transition:opacity .4s;opacity:.8;
}
.vw-side img{width:100%;height:100%;object-fit:cover}
.vw-side.prev{left:max(-4%,calc(50% - clamp(150px,42vw,330px)))}
.vw-side.next{right:max(-4%,calc(50% - clamp(150px,42vw,330px)))}
.vw-phone{
  position:relative;width:clamp(220px,62vw,320px);aspect-ratio:9/17;border-radius:26px;overflow:hidden;
  border:1px solid rgba(255,255,255,.2);box-shadow:0 40px 120px rgba(0,0,0,.8),0 0 80px rgba(124,58,237,.25);
  background:#000;z-index:2;transform:scale(.92);transition:transform .45s var(--ease);
}
#viewer.open .vw-phone{transform:scale(1)}
.vw-phone img.vw-main{width:100%;height:100%;object-fit:cover}
.vw-phone .vw-fade{position:absolute;inset:auto 0 0 0;height:44%;background:linear-gradient(transparent,rgba(3,3,6,.9))}
.vw-info{position:absolute;left:0;right:0;bottom:0;padding:1rem;display:flex;align-items:flex-end;gap:.7rem;z-index:3}
.vw-thumb{width:56px;height:74px;border-radius:10px;overflow:hidden;border:1.5px solid rgba(255,255,255,.65);flex:none}
.vw-thumb img{width:100%;height:100%;object-fit:cover}
.vw-meta{flex:1;min-width:0}
.vw-meta h4{font-size:.95rem;font-weight:800;letter-spacing:.04em}
.vw-meta .vw-price{font-size:.78rem;color:var(--muted)}
.vw-meta .vw-price s{opacity:.7;margin-right:.4rem}
.vw-meta .vw-price b{color:#fff}
.vw-go{
  flex:none;padding:.55rem 1rem;border-radius:999px;background:rgba(255,255,255,.16);
  backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.3);font-size:.72rem;font-weight:800;letter-spacing:.1em;
  transition:background .25s,transform .25s;
}
.vw-go:hover{background:rgba(255,255,255,.28);transform:scale(1.05)}
.vw-top{position:absolute;top:0;left:0;right:0;padding:.9rem;display:flex;justify-content:space-between;z-index:3}
.vw-top button{width:36px;height:36px;border-radius:50%;background:rgba(4,4,8,.6);border:1px solid var(--line);backdrop-filter:blur(6px);display:grid;place-items:center;font-size:.85rem}
.vw-ctl{position:absolute;inset:0;margin:auto;width:64px;height:64px;border-radius:50%;background:rgba(4,4,8,.5);border:1px solid rgba(255,255,255,.25);backdrop-filter:blur(4px);display:grid;place-items:center;font-size:1.2rem;z-index:3;transition:transform .25s}
.vw-ctl:hover{transform:scale(1.1)}
.vw-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:46px;height:46px;border-radius:50%;
  background:rgba(8,8,14,.7);border:1px solid var(--line);backdrop-filter:blur(8px);display:grid;place-items:center;
  transition:background .25s,transform .25s;
}
.vw-arrow:hover{background:rgba(30,30,44,.85);transform:translateY(-50%) scale(1.08)}
.vw-arrow.l{left:10px}.vw-arrow.r{right:10px}
.vw-close{position:absolute;top:14px;right:14px;z-index:6;width:44px;height:44px;border-radius:50%;background:rgba(10,10,16,.8);border:1px solid var(--line);display:grid;place-items:center;font-size:1rem;transition:transform .3s,background .3s}
.vw-close:hover{transform:rotate(90deg);background:rgba(255,77,109,.25)}
.vw-count{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);z-index:5;font-family:var(--mono);font-size:.72rem;color:var(--muted);background:rgba(4,4,8,.6);padding:.3rem .7rem;border-radius:999px;border:1px solid var(--line-soft)}

/* ---------- 12. Architecture ---------- */
.arch-pipe{display:grid;gap:.8rem;margin-bottom:2rem}
.pipe-node{
  border-radius:var(--r-md);border:1px solid var(--line);padding:.95rem 1.1rem;background:var(--panel);
  display:flex;gap:.8rem;align-items:center;font-size:.85rem;position:relative;
}
.pipe-node i{font-style:normal;font-size:1.2rem;flex:none}
.pipe-node b{display:block;font-size:.86rem}
.pipe-node span{color:var(--muted-2);font-size:.74rem}
.pipe-arrow{text-align:center;color:var(--coral);font-size:1rem;line-height:1;margin:-2px 0}
.tabs{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1rem}
.tabs button{
  padding:.6rem 1.1rem;border-radius:999px;border:1px solid var(--line);background:var(--panel);
  font-size:.8rem;font-weight:700;color:var(--muted);transition:all .25s;
}
.tabs button.on{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 24px rgba(255,77,109,.3)}
.tab-panel{display:none}
.tab-panel.on{display:block;animation:fadeUp .5s var(--ease)}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.code{
  border-radius:var(--r-md);border:1px solid var(--line);background:#0b0b13;overflow:hidden;
  box-shadow:var(--shadow-1);
}
.code-head{display:flex;align-items:center;gap:.5rem;padding:.65rem .95rem;border-bottom:1px solid var(--line-soft);background:rgba(255,255,255,.03)}
.code-head .wd{width:10px;height:10px;border-radius:50%}
.code-head .wd:nth-child(1){background:#ff5f57}.code-head .wd:nth-child(2){background:#febc2e}.code-head .wd:nth-child(3){background:#28c840}
.code-head span{margin-left:.5rem;font-family:var(--mono);font-size:.72rem;color:var(--muted-2)}
.code pre{padding:1.1rem 1.2rem;overflow-x:auto;font-family:var(--mono);font-size:.76rem;line-height:1.75;color:#cdd3e1}
.code .c{color:#5b6478}.code .k{color:#c792ea}.code .f{color:#82aaff}.code .s{color:#c3e88d}.code .v{color:#f78c6c}.code .t{color:#ffcb6b}
.arch-grid{display:grid;gap:1.4rem;margin-top:2rem}
.sim{
  border-radius:var(--r-lg);border:1px solid var(--line);overflow:hidden;background:#0a0a12;box-shadow:var(--shadow-1);
}
.sim-head{padding:1rem 1.2rem;border-bottom:1px solid var(--line-soft);display:flex;flex-wrap:wrap;gap:.7rem;align-items:center;justify-content:space-between}
.sim-head h4{font-size:.95rem;font-weight:800;display:flex;align-items:center;gap:.5rem}
.sim-head h4 .dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green);animation:blink 2s infinite}
@keyframes blink{50%{opacity:.35}}
.sim-eps{display:flex;gap:.5rem;flex-wrap:wrap;padding:1rem 1.2rem .3rem}
.sim-eps button{
  font-family:var(--mono);font-size:.72rem;padding:.5rem .8rem;border-radius:10px;border:1px solid var(--line);
  background:var(--panel);color:var(--muted);transition:all .25s;
}
.sim-eps button.on{border-color:var(--cyan);color:var(--cyan);background:rgba(34,211,238,.08)}
.sim-body{padding:1rem 1.2rem 1.3rem;display:grid;gap:.9rem}
.sim-console{
  border-radius:var(--r-md);background:#05050a;border:1px solid var(--line-soft);
  font-family:var(--mono);font-size:.74rem;line-height:1.8;padding:1rem 1.1rem;min-height:190px;
  color:#9fe8b8;overflow-x:auto;white-space:pre-wrap;word-break:break-word;
}
.sim-console .req{color:#82aaff}.sim-console .ok{color:#2fd575}.sim-console .dim{color:#5b6478}.sim-console .js{color:#e6edf3}
.sim-foot{display:flex;flex-wrap:wrap;gap:.7rem;align-items:center;justify-content:space-between}
.sim-status{font-family:var(--mono);font-size:.72rem;color:var(--muted-2)}
.sim-status b{color:var(--green)}

/* ---------- 13. Compare ---------- */
.tbl-wrap{overflow-x:auto;border-radius:var(--r-lg);border:1px solid var(--line);background:rgba(255,255,255,.02);-webkit-overflow-scrolling:touch}
table.compare{width:100%;min-width:660px;border-collapse:collapse;font-size:.85rem}
.compare th,.compare td{padding:.9rem 1.1rem;text-align:left;border-bottom:1px solid var(--line-soft);vertical-align:top}
.compare thead th{font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;background:rgba(255,255,255,.04)}
.compare thead th.me{color:#fff;background:linear-gradient(180deg,rgba(124,58,237,.35),rgba(255,77,109,.18));position:relative}
.compare td.me{background:rgba(124,58,237,.12);font-weight:600;color:#fff}
.compare td:first-child{color:var(--muted);font-weight:600;min-width:190px}
.compare tbody tr:last-child td{border-bottom:none}
.compare tbody tr:hover td{background:rgba(255,255,255,.035)}
.compare tbody tr:hover td.me{background:rgba(124,58,237,.2)}
.yes{color:var(--green);font-weight:800}.no{color:#ff6b81;font-weight:700}.mid{color:var(--amber);font-weight:700}

/* ---------- 14. Results ---------- */
.res-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.9rem}
.res-card{
  border-radius:var(--r-lg);border:1px solid var(--line);padding:1.3rem 1.2rem;text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(165deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
}
.res-card b{display:block;font-size:clamp(1.6rem,5.4vw,2.4rem);font-weight:900;letter-spacing:-.03em}
.res-card span{font-size:.68rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2)}
.res-card:nth-child(1) b{color:var(--cyan)}.res-card:nth-child(2) b{color:var(--coral)}
.res-card:nth-child(3) b{color:var(--amber)}.res-card:nth-child(4) b{color:var(--green)}
.learn{margin-top:2rem;display:grid;gap:.8rem}
.learn li{
  display:flex;gap:.9rem;align-items:flex-start;padding:1rem 1.2rem;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--panel);font-size:.9rem;color:var(--muted);
}
.learn li b{color:var(--txt)}
.learn li i{font-style:normal;flex:none;font-size:1.1rem;margin-top:1px}

/* ---------- 15. Gallery ---------- */
.gal-grid{display:grid;gap:1.1rem;grid-template-columns:1fr}
.gal-grid .shot{cursor:zoom-in}

/* lightbox */
#lightbox{
  position:fixed;inset:0;z-index:160;background:rgba(2,2,5,.95);backdrop-filter:blur(12px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1.2rem;
  opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s;
}
#lightbox.open{opacity:1;visibility:visible}
#lightbox .lb-imgwrap{max-width:min(96vw,1100px);max-height:78vh;overflow:auto;border-radius:var(--r-md);border:1px solid var(--line);box-shadow:var(--shadow-2);background:#0a0a12}
#lightbox img{width:100%;height:auto;transition:transform .4s var(--ease);cursor:zoom-in}
#lightbox img.zoomed{cursor:zoom-out;transform:scale(1.6)}
.lb-bar{display:flex;align-items:center;gap:1rem;margin-top:1rem;max-width:min(96vw,1100px);width:100%}
.lb-cap{flex:1;font-size:.8rem;color:var(--muted);min-width:0}
.lb-cap b{color:var(--txt)}
.lb-count{font-family:var(--mono);font-size:.75rem;color:var(--muted-2)}
.lb-btns{display:flex;gap:.5rem}
.lb-btns button{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--panel);display:grid;place-items:center;transition:background .25s}
.lb-btns button:hover{background:var(--panel-2)}
#lightbox .vw-close{top:auto;bottom:auto}

/* ---------- 16. Credits / footer ---------- */
#credits{position:relative;overflow:hidden}
.credit-card{
  border-radius:var(--r-xl);border:1px solid var(--line);padding:clamp(2rem,6vw,3.6rem);text-align:center;
  background:radial-gradient(90% 120% at 50% 0%,rgba(124,58,237,.2),rgba(6,6,11,.5) 60%),#08080f;
  position:relative;overflow:hidden;
}
.credit-card::before{content:"";position:absolute;inset:0;background:var(--grad-soft);opacity:.5;pointer-events:none}
.avatar{
  width:92px;height:92px;margin:0 auto 1.2rem;border-radius:50%;background:var(--grad);display:grid;place-items:center;
  font-size:1.9rem;font-weight:900;color:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.1),0 20px 50px rgba(255,77,109,.4);
  position:relative;
}
.avatar::after{content:"";position:absolute;inset:-8px;border-radius:50%;border:1.5px dashed rgba(255,255,255,.25);animation:spinSlow 14s linear infinite}
@keyframes spinSlow{to{transform:rotate(360deg)}}
.credit-card h2{font-size:clamp(1.6rem,5.4vw,2.6rem);font-weight:900;letter-spacing:-.02em}
.credit-card .handle{font-family:var(--mono);color:var(--cyan);font-size:.9rem;margin-top:.3rem}
.credit-card p{color:var(--muted);max-width:52ch;margin:1rem auto 0;font-size:.93rem}
.credit-actions{display:flex;flex-wrap:wrap;gap:.8rem;justify-content:center;margin-top:1.8rem;position:relative}
.stack-row{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin-top:1.8rem;position:relative}
footer .foot{
  border-top:1px solid var(--line-soft);margin-top:clamp(2.5rem,6vw,4rem);padding:1.6rem 0 2rem;
  display:flex;flex-wrap:wrap;gap:.8rem;align-items:center;justify-content:space-between;
  color:var(--muted-2);font-size:.78rem;
}
footer .foot a{color:var(--muted);transition:color .25s}
footer .foot a:hover{color:var(--coral)}

/* ---------- 16b. FAQ ---------- */
.faq-list{display:grid;gap:.8rem;max-width:860px}
.faq-item{border-radius:var(--r-md);border:1px solid var(--line);background:var(--panel);overflow:hidden;transition:border-color .3s}
.faq-item[open]{border-color:rgba(124,58,237,.45);background:var(--panel-2)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:1.05rem 1.2rem;font-weight:700;font-size:.95rem;
  display:flex;justify-content:space-between;align-items:center;gap:1rem;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.25rem;color:var(--coral);transition:transform .3s var(--ease);flex:none}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 1.2rem 1.15rem;color:var(--muted);font-size:.9rem}
.faq-item .faq-body b{color:var(--txt)}
.faq-item .faq-body code{font-family:var(--mono);font-size:.82em;background:rgba(124,58,237,.16);border:1px solid rgba(124,58,237,.35);color:#c9b9ff;padding:.1em .4em;border-radius:6px}

/* ---------- 16c. Reviews ---------- */
.rev-top{display:flex;flex-wrap:wrap;gap:1.2rem;align-items:center;justify-content:space-between;margin-bottom:1.6rem}
.rev-score{display:flex;align-items:center;gap:1rem}
.rev-score .big{font-size:clamp(2.2rem,7vw,3.2rem);font-weight:900;letter-spacing:-.03em}
.rev-score .stars{color:var(--amber);font-size:1.05rem;letter-spacing:.15em}
.rev-score small{display:block;color:var(--muted-2);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase}
.rev-grid{display:grid;gap:1.4rem;grid-template-columns:1fr}
.rev-form{
  border-radius:var(--r-lg);border:1px solid var(--line);padding:clamp(1.2rem,4vw,1.8rem);
  background:linear-gradient(165deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
}
.rev-form h3{font-size:1.05rem;font-weight:800;margin-bottom:1rem}
.rev-form label{display:block;font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2);margin:.9rem 0 .35rem}
.rev-form input,.rev-form textarea{
  width:100%;border-radius:12px;border:1px solid var(--line);background:rgba(0,0,0,.35);
  padding:.75rem .95rem;color:var(--txt);font-family:inherit;font-size:.9rem;outline:none;
  transition:border-color .25s,box-shadow .25s;
}
.rev-form input:focus,.rev-form textarea:focus{border-color:var(--violet);box-shadow:0 0 0 3px rgba(124,58,237,.22)}
.rev-form textarea{min-height:96px;resize:vertical}
.star-pick{display:flex;gap:.3rem;font-size:1.5rem;margin-top:.2rem}
.star-pick button{color:rgba(255,255,255,.22);transition:color .2s,transform .2s;line-height:1}
.star-pick button.on{color:var(--amber);text-shadow:0 0 14px rgba(255,179,92,.55)}
.star-pick button:hover{transform:scale(1.18)}
.rev-note{margin-top:.8rem;font-size:.72rem;color:var(--muted-2)}
.rev-list{display:grid;gap:.9rem;align-content:start}
.rev-card{
  border-radius:var(--r-md);border:1px solid var(--line);background:var(--panel);padding:1.1rem 1.2rem;
  animation:fadeUp .5s var(--ease);
}
.rev-head{display:flex;align-items:center;gap:.8rem;margin-bottom:.5rem}
.rev-ava{width:40px;height:40px;flex:none;border-radius:50%;background:var(--grad);display:grid;place-items:center;font-weight:800;font-size:.85rem;color:#fff}
.rev-head b{font-size:.9rem;display:block}
.rev-head small{color:var(--muted-2);font-size:.7rem}
.rev-stars{margin-left:auto;color:var(--amber);font-size:.82rem;letter-spacing:.12em;flex:none}
.rev-card p{font-size:.87rem;color:var(--muted)}
.rev-card .rev-badge{display:inline-block;margin-left:.5rem;font-size:.6rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);border:1px solid rgba(34,211,238,.4);border-radius:6px;padding:.12rem .4rem;vertical-align:middle}
@media (min-width:900px){.rev-grid{grid-template-columns:.9fr 1.1fr}}

/* ---------- 17. Toast / misc ---------- */
#toast{
  position:fixed;left:50%;bottom:26px;transform:translate(-50%,80px);z-index:180;
  background:rgba(10,10,18,.92);border:1px solid var(--line);backdrop-filter:blur(12px);
  padding:.8rem 1.3rem;border-radius:999px;font-size:.83rem;font-weight:600;box-shadow:var(--shadow-2);
  transition:transform .45s var(--ease);display:flex;align-items:center;gap:.6rem;max-width:92vw;
}
#toast.show{transform:translate(-50%,0)}
#toast i{font-style:normal}
#toTop{
  position:fixed;right:16px;bottom:16px;z-index:100;width:46px;height:46px;border-radius:14px;
  background:var(--grad);color:#fff;display:grid;place-items:center;font-size:1.05rem;
  box-shadow:0 12px 30px rgba(255,77,109,.4);opacity:0;visibility:hidden;transform:translateY(16px);
  transition:all .4s var(--ease);
}
#toTop.show{opacity:1;visibility:visible;transform:none}
#cursorGlow{
  position:fixed;width:340px;height:340px;border-radius:50%;pointer-events:none;z-index:1;
  background:radial-gradient(closest-side,rgba(124,58,237,.13),transparent 70%);
  transform:translate(-50%,-50%);left:0;top:0;transition:opacity .4s;opacity:0;
}
@media (pointer:fine){#cursorGlow{opacity:1}}

/* cropped previews for very tall admin screenshots (lightbox still shows full image) */
.step-shots .shot > img{max-height:460px;object-fit:cover;object-position:top center}
.gal-grid .shot > img{max-height:320px;object-fit:cover;object-position:top center}
.step-shots{align-items:start}

/* ---------- 18. Breakpoints (mobile-first upgrades) ---------- */
@media (min-width:640px){
  .hero-stats{grid-template-columns:repeat(4,1fr)}
  .step-shots{grid-template-columns:1fr 1fr}
  .step-shots .wide{grid-column:1/-1}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .gal-grid{grid-template-columns:repeat(2,1fr)}
  .res-grid{grid-template-columns:repeat(4,1fr)}
  .arch-grid{grid-template-columns:1fr}
}
@media (min-width:900px){
  .hero-in{grid-template-columns:1.05fr .95fr;align-items:center;gap:2rem}
  .hero-scene{height:560px}
  .ov-grid{grid-template-columns:1.25fr .85fr}
  .ps-grid{grid-template-columns:1fr 1fr}
  .feat-grid{grid-template-columns:repeat(3,1fr)}
  .gal-grid{grid-template-columns:repeat(3,1fr)}
  .arch-grid{grid-template-columns:1.1fr .9fr;align-items:start}
  .arch-pipe{grid-template-columns:1fr;gap:.8rem}
  .flow::before{left:27px}
}
@media (min-width:1080px){
  .nav-links{display:flex}
  .nav-cta{display:inline-flex}
  #burger{display:none}
}
@media (min-width:1200px){
  .container{width:min(100% - 4rem,1240px)}
  .nav-in{width:min(100% - 4rem,1240px)}
  .step-shots{grid-template-columns:1.15fr .85fr}
}

/* ---------- 19. Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .rv{opacity:1;transform:none}
  .hero-title .line i{transform:none}
}