*,*::before,*::after{box-sizing:border-box}
:root{
  --ink:#171717; --ink-2:#3f3f3f; --muted:#6f6f6f; --line:#e5e2dc; --line-2:#efece6;
  --bg:#ffffff; --bg-alt:#f8f6f2; --paper:#fbfaf7;
  --gold:#a16207; --gold-2:#c69a3f; --gold-soft:#f3ead8;
  --ok:#15803d;
  --r:14px; --r-lg:20px;
  --shadow:0 1px 2px rgba(23,23,23,.04), 0 12px 32px -18px rgba(23,23,23,.18);
  --shadow-hi:0 2px 4px rgba(23,23,23,.05), 0 26px 50px -22px rgba(23,23,23,.28);
  --sans:'IBM Plex Sans Arabic','Segoe UI',Tahoma,system-ui,sans-serif;
  --lat:'Space Grotesk','IBM Plex Sans Arabic',sans-serif;
}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink); font-family:var(--sans);
  font-size:16.5px; line-height:1.75; -webkit-font-smoothing:antialiased;
  font-weight:300;
}
img{max-width:100%; display:block}
a{color:inherit; text-decoration:none}
h1,h2,h3{line-height:1.25; margin:0; font-weight:600; letter-spacing:-.01em}
p{margin:0 0 1rem}
b,strong{font-weight:600}
.wrap{width:min(1180px,92vw); margin-inline:auto}
.num,.mono{font-family:var(--lat); font-feature-settings:"tnum"}

/* ---------- progress + nav ---------- */
.progress{position:fixed; inset-block-start:0; inset-inline-start:0; height:2px; width:0; background:var(--gold);
  z-index:60; transition:width .15s linear}
.nav{position:sticky; inset-block-start:0; z-index:50; backdrop-filter:blur(14px);
  background:rgba(255,255,255,.82); border-block-end:1px solid var(--line-2)}
.nav-inner{width:min(1180px,92vw); margin-inline:auto; display:flex; align-items:center; gap:1.4rem;
  justify-content:space-between; padding-block:.7rem}
.brand{display:flex; align-items:center; gap:.6rem}
.brand-mark{font-weight:700; font-size:.95rem; letter-spacing:.02em; color:#fff; background:var(--ink);
  padding:.22rem .7rem; border-radius:999px}
.brand-txt{font-size:.92rem; color:var(--ink-2); font-weight:400}
.nav-links{display:flex; align-items:center; gap:1.5rem; font-size:.92rem}
.nav-links a{color:var(--ink-2); transition:color .2s ease; position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--gold)}
.nav-links a.active::after{content:""; position:absolute; inset-inline:0; inset-block-end:-6px; height:2px; background:var(--gold)}
.nav-cta{background:var(--ink); color:#fff !important; padding:.5rem 1.05rem; border-radius:999px; font-weight:500}
.nav-cta:hover{background:var(--gold) !important}
.burger{display:none; background:none; border:0; color:var(--ink); cursor:pointer}

/* ---------- hero ---------- */
.hero{padding:5.5rem 0 3.5rem; background:
  radial-gradient(1200px 420px at 85% -10%, #f6efe2 0%, rgba(246,239,226,0) 60%),
  linear-gradient(180deg,#fff 0%, #fbfaf7 100%)}
.eyebrow{display:inline-flex; align-items:center; gap:.5rem; font-size:.82rem; letter-spacing:.06em;
  color:var(--gold); background:var(--gold-soft); padding:.34rem .85rem; border-radius:999px; margin-block-end:1.4rem}
.eyebrow svg{width:15px; height:15px}
.hero h1{font-size:clamp(2.3rem,6.4vw,4.6rem); font-weight:700; letter-spacing:-.03em}
.hero h1 span{color:var(--gold)}
.lede{max-width:66ch; font-size:1.06rem; color:var(--ink-2); margin-block-start:1.3rem}
.chips{display:flex; flex-wrap:wrap; gap:.6rem; margin-block-start:1.8rem}
.chip{display:inline-flex; align-items:center; gap:.45rem; font-size:.86rem; color:var(--ink-2);
  background:#fff; border:1px solid var(--line); padding:.42rem .85rem; border-radius:999px; box-shadow:var(--shadow)}
.chip svg{width:15px; height:15px; color:var(--gold)}

/* ---------- sections ---------- */
.section{padding:4.2rem 0}
.section.alt{background:var(--bg-alt); border-block:1px solid var(--line-2)}
.sec-head{margin-block-end:2.2rem; max-width:70ch}
.sec-head h2{font-size:clamp(1.6rem,3.4vw,2.4rem); font-weight:600}
.sec-head p{color:var(--muted); margin-block-start:.6rem; font-size:.98rem}
.fineprint{display:flex; gap:.6rem; align-items:flex-start; font-size:.86rem; color:var(--muted);
  margin-block-start:1.2rem; background:#fff; border:1px solid var(--line); border-radius:var(--r); padding:.85rem 1rem}
.fineprint svg{width:16px; height:16px; flex:0 0 auto; margin-block-start:.25rem; color:var(--gold)}

/* ---------- tabs ---------- */
.tabs{display:flex; flex-wrap:wrap; gap:.55rem; margin-block-end:1.6rem}
.tab{display:flex; align-items:center; gap:.6rem; background:#fff; border:1px solid var(--line);
  border-radius:999px; padding:.5rem .95rem .5rem .6rem; cursor:pointer; font-family:var(--sans);
  font-size:.9rem; color:var(--ink-2); transition:all .22s ease}
.tab:hover{transform:translateY(-2px); box-shadow:var(--shadow); border-color:var(--gold-2)}
.tab .tno{font-family:var(--lat); font-size:.78rem; font-weight:700; color:var(--gold);
  background:var(--gold-soft); width:26px; height:26px; border-radius:8px; display:grid; place-items:center}
.tab.active{background:var(--ink); color:#fff; border-color:var(--ink)}
.tab.active .tno{background:rgba(255,255,255,.16); color:#fff}

/* ---------- concept panel ---------- */
.panel{background:#fff; border:1px solid var(--line); border-radius:var(--r-lg); box-shadow:var(--shadow-hi);
  overflow:hidden; animation:fadeUp .5s ease both}
.panel-grid{display:grid; grid-template-columns:1.15fr .85fr; gap:0}
.drawing{background:linear-gradient(160deg,#f3f1ec,#e7e4dd); padding:1.4rem; border-inline-end:1px solid var(--line-2);
  display:flex; flex-direction:column; gap:.9rem; min-width:0}
.drawing-frame{background:#fff; border:1px solid var(--line); border-radius:var(--r); padding:.5rem; overflow:hidden}
.drawing-frame img{width:100%; height:auto; cursor:zoom-in; transition:transform .4s ease}
.drawing-frame img:hover{transform:scale(1.012)}
.drawing-bar{display:flex; justify-content:space-between; align-items:center; gap:1rem; font-size:.82rem; color:var(--muted)}
.linkbtn{display:inline-flex; align-items:center; gap:.4rem; background:#fff; border:1px solid var(--line);
  border-radius:999px; padding:.35rem .8rem; font-size:.82rem; color:var(--ink-2); cursor:pointer;
  font-family:var(--sans); transition:all .2s ease}
.linkbtn:hover{border-color:var(--gold); color:var(--gold); transform:translateY(-1px)}
.linkbtn svg{width:14px; height:14px}
.specs{padding:1.6rem 1.7rem; min-width:0}
.specs .tag{font-size:.78rem; letter-spacing:.08em; color:var(--gold); font-weight:600}
.specs h3{font-size:clamp(1.35rem,2.6vw,1.75rem); margin-block:.35rem .2rem}
.specs .height{font-family:var(--lat); font-size:.9rem; color:var(--muted); margin-block-end:1rem}
.specs .desc{color:var(--ink-2); font-size:.96rem}
.speclist{list-style:none; margin:1.2rem 0 0; padding:0; display:grid; gap:.55rem}
.speclist li{display:flex; gap:.7rem; align-items:flex-start; font-size:.9rem; color:var(--ink-2);
  padding-block-end:.55rem; border-block-end:1px dashed var(--line-2)}
.speclist li:last-child{border:0}
.speclist .n{font-family:var(--lat); font-size:.75rem; font-weight:700; color:#fff; background:var(--ink);
  min-width:22px; height:22px; border-radius:6px; display:grid; place-items:center; margin-block-start:.28rem}
.speclist b{color:var(--ink); font-weight:600}

.facts{display:grid; grid-template-columns:1fr 1fr; gap:.7rem; margin-block-start:1.3rem}
.fact{background:var(--paper); border:1px solid var(--line-2); border-radius:var(--r); padding:.7rem .85rem}
.fact .k{font-size:.76rem; color:var(--muted); display:flex; align-items:center; gap:.35rem}
.fact .k svg{width:13px; height:13px; color:var(--gold)}
.fact .v{font-size:.9rem; font-weight:500; margin-block-start:.2rem}
.swatches{display:flex; gap:.5rem; margin-block-start:1.1rem; flex-wrap:wrap}
.sw{width:34px; height:34px; border-radius:9px; border:1px solid rgba(0,0,0,.12); cursor:help;
  transition:transform .2s ease}
.sw:hover{transform:translateY(-3px) scale(1.05)}
.note-box{margin-block-start:1.3rem; display:flex; gap:.6rem; font-size:.88rem; color:var(--ink-2);
  background:var(--gold-soft); border-radius:var(--r); padding:.8rem .95rem}
.note-box svg{width:16px; height:16px; color:var(--gold); flex:0 0 auto; margin-block-start:.2rem}

/* ---------- compare table ---------- */
.table-scroll{overflow-x:auto; border:1px solid var(--line); border-radius:var(--r); background:#fff;
  box-shadow:var(--shadow)}
table{border-collapse:collapse; width:100%; min-width:820px; font-size:.9rem}
th,td{padding:.8rem .95rem; text-align:start; border-block-end:1px solid var(--line-2); vertical-align:top}
thead th{background:var(--ink); color:#fff; font-weight:500; font-size:.88rem; position:sticky; inset-block-start:0}
tbody th{font-weight:500; color:var(--muted); background:var(--paper); white-space:nowrap; font-size:.84rem}
tbody tr:hover td{background:#fdfcf9}
.dots{letter-spacing:.12em; color:var(--gold); font-family:var(--lat)}
.dots span{color:var(--line); }

/* ---------- notes grid ---------- */
.grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(258px,1fr)); gap:1rem}
.note-card{background:#fff; border:1px solid var(--line); border-radius:var(--r); padding:1.15rem 1.2rem;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease}
.note-card:hover{transform:translateY(-3px); box-shadow:var(--shadow-hi); border-color:var(--gold-2)}
.note-card svg{width:20px; height:20px; color:var(--gold)}
.note-card h3{font-size:1rem; margin-block:.6rem .35rem}
.note-card p{font-size:.88rem; color:var(--muted); margin:0}

/* ---------- next / cta ---------- */
.next-sec{background:
  radial-gradient(900px 380px at 12% 0%, #f6efe2 0%, rgba(246,239,226,0) 65%), var(--bg)}
.next-wrap{display:grid; grid-template-columns:1.3fr .7fr; gap:2.2rem; align-items:start}
.checklist{counter-reset:c; list-style:none; padding:0; margin:1.2rem 0 1.6rem; display:grid; gap:.5rem}
.checklist li{counter-increment:c; display:flex; gap:.7rem; align-items:flex-start; font-size:.94rem; color:var(--ink-2)}
.checklist li::before{content:counter(c); font-family:var(--lat); font-size:.75rem; font-weight:700;
  color:var(--gold); background:var(--gold-soft); min-width:24px; height:24px; border-radius:7px;
  display:grid; place-items:center; margin-block-start:.22rem}
.btn{display:inline-flex; align-items:center; gap:.55rem; border:0; border-radius:999px; padding:.75rem 1.4rem;
  font-family:var(--sans); font-size:.95rem; font-weight:500; cursor:pointer; transition:all .22s ease}
.btn.primary{background:var(--ink); color:#fff}
.btn.primary:hover{background:var(--gold); transform:translateY(-2px); box-shadow:var(--shadow-hi)}
.btn svg{width:17px; height:17px}
.copy-msg{font-size:.86rem; color:var(--ok); margin-inline-start:.8rem; opacity:0; transition:opacity .3s ease}
.copy-msg.show{opacity:1}
.next-card{background:var(--ink); color:#fff; border-radius:var(--r-lg); padding:1.6rem 1.5rem; box-shadow:var(--shadow-hi)}
.next-card h3{font-size:1.1rem}
.next-card p{color:rgba(255,255,255,.78); font-size:.92rem; margin-block:.7rem 1rem}
.mini{list-style:none; padding:0; margin:0; display:grid; gap:.5rem; font-size:.88rem; color:rgba(255,255,255,.9)}
.mini li{display:flex; gap:.5rem; align-items:center}
.mini li::before{content:""; width:6px; height:6px; border-radius:50%; background:var(--gold-2); flex:0 0 auto}

/* ---------- footer + lightbox ---------- */
.footer{background:var(--bg-alt); border-block-start:1px solid var(--line); padding-block:2.2rem}
.foot-inner{display:flex; justify-content:space-between; gap:2rem; align-items:center; flex-wrap:wrap}
.footer p{font-size:.86rem; color:var(--muted); margin:.5rem 0 0; max-width:62ch}
.lightbox{position:fixed; inset:0; background:rgba(16,15,13,.9); display:none; place-items:center;
  padding:2.5rem; z-index:80; backdrop-filter:blur(4px)}
.lightbox.open{display:grid; animation:fadeUp .3s ease both}
.lightbox img{max-height:88vh; width:auto; background:#fff; border-radius:var(--r); box-shadow:var(--shadow-hi)}
.lb-close{position:absolute; inset-block-start:1.2rem; inset-inline-end:1.4rem; background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.25); color:#fff; border-radius:999px; width:40px; height:40px;
  display:grid; place-items:center; cursor:pointer}
@keyframes fadeUp{from{opacity:0; transform:translateY(14px)} to{opacity:1; transform:none}}
@media (prefers-reduced-motion:reduce){*{animation:none !important; transition:none !important}}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .panel-grid{grid-template-columns:1fr}
  .drawing{border-inline-end:0; border-block-end:1px solid var(--line-2)}
  .next-wrap{grid-template-columns:1fr}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .nav-links{display:none; position:absolute; inset-block-start:100%; inset-inline:0; background:#fff;
    flex-direction:column; align-items:flex-start; padding:1.2rem 6vw 1.6rem; border-block-end:1px solid var(--line);
    gap:1rem}
  .nav-links.open{display:flex}
  .burger{display:block}
  .hero{padding-block:3.4rem 2.4rem}
  .section{padding-block:3rem}
  .facts{grid-template-columns:1fr}
  .specs{padding:1.25rem}
}
@media (max-width:420px){
  .brand-txt{display:none}
  .tab{font-size:.84rem}
}