/* ─── design tokens ──────────────────────────────────── */
:root {
  --c-bg:        #f1f5fb;
  --c-text:      #0f172a;
  --c-muted:     #64748b;
  --c-faint:     #94a3b8;

  --c-blue:      #4f72ff;
  --c-blue2:     #7b97ff;
  --c-glow:      rgba(79,114,255,.16);

  --g-sm:   rgba(255,255,255,.46);
  --g-md:   rgba(255,255,255,.62);
  --g-lg:   rgba(255,255,255,.76);
  --g-bd:   rgba(255,255,255,.68);
  --g-bd2:  rgba(255,255,255,.84);

  --sh-xs: 0 2px 8px rgba(15,23,42,.05);
  --sh-sm: 0 6px 22px rgba(15,23,42,.07);
  --sh-md: 0 18px 52px rgba(15,23,42,.10);
  --sh-lg: 0 34px 84px rgba(15,23,42,.13);

  --bl-sm: blur(14px);
  --bl-md: blur(22px);
  --bl-lg: blur(38px);

  --r-sm: 14px;
  --r-md: 22px;
  --r-lg: 30px;
  --r-xl: 38px;

  --nav-h: 66px;
  --max-w: 1260px;
}

/* ─── reset ──────────────────────────────────────────── */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px;overflow-x:hidden}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}

body{
  font-family:"Inter","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  color:var(--c-text);
  overflow-x:hidden;
  background-color:var(--c-bg);
  background-image:
    radial-gradient(ellipse 900px 700px at 0% 0%,    #d8e6ff 0%,transparent 52%),
    radial-gradient(ellipse 700px 600px at 100% 0%,  #d2fced 0%,transparent 46%),
    radial-gradient(ellipse 600px 500px at 60% 100%, #e2deff 0%,transparent 50%),
    linear-gradient(180deg,#f6f9ff 0%,#eef3fa 100%);
  background-attachment:fixed;
}

/* blobs */
.blob{
  position:fixed;border-radius:50%;pointer-events:none;
  z-index:-1;filter:blur(88px);opacity:.35;
}
.blob-1{width:620px;height:620px;background:#bdd0ff;top:-230px;left:-190px}
.blob-2{width:540px;height:540px;background:#b8ffdf;bottom:-210px;right:-170px}
.blob-3{width:400px;height:400px;background:#d9d4ff;top:42%;right:6%}

/* inset top-edge highlight helper */
.gi{box-shadow:0 1px 0 rgba(255,255,255,.85) inset}

/* ─── nav ────────────────────────────────────────────── */
.nav{
  position:sticky;top:0;z-index:900;height:var(--nav-h);
  background:rgba(241,245,251,.74);
  backdrop-filter:var(--bl-md);-webkit-backdrop-filter:var(--bl-md);
  border-bottom:1px solid rgba(255,255,255,.62);
  box-shadow:0 1px 0 rgba(255,255,255,.8) inset,var(--sh-xs);
}
.nav-inner{
  max-width:var(--max-w);margin:auto;padding:0 30px;
  height:100%;display:flex;align-items:center;justify-content:space-between;
}
.logo{
  font-size:17px;font-weight:800;letter-spacing:-.4px;
  display:flex;align-items:center;gap:8px;
}
.logo-icon{
  width:28px;height:28px;border-radius:8px;
  background:linear-gradient(135deg,var(--c-blue),var(--c-blue2));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:14px;font-weight:900;
  box-shadow:0 3px 10px var(--c-glow);
}
.logo em{font-style:normal;color:var(--c-blue)}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{
  padding:7px 15px;border-radius:999px;
  font-size:13.5px;font-weight:500;color:var(--c-muted);
  transition:all .18s;
}
.nav-links a:hover{color:var(--c-text);background:rgba(255,255,255,.58)}
.nav-cta{
  color:var(--c-blue)!important;font-weight:600!important;
  background:rgba(79,114,255,.09)!important;
  border:1px solid rgba(79,114,255,.16)!important;
}
.nav-cta:hover{background:rgba(79,114,255,.16)!important}

/* ─── hero ───────────────────────────────────────────── */
.hero{
  max-width:var(--max-w);margin:auto;
  padding:100px 30px 80px;
  display:grid;grid-template-columns:1fr 1fr;
  gap:60px;align-items:center;
}

.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:11.5px;font-weight:600;letter-spacing:.05em;
  color:var(--c-blue);
  background:var(--g-md);backdrop-filter:var(--bl-sm);
  border:1px solid var(--g-bd);
  box-shadow:var(--sh-xs),0 0 0 1px rgba(255,255,255,.5) inset;
  margin-bottom:26px;user-select:none;
}
.hero-badge-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--c-blue);box-shadow:0 0 0 3px var(--c-glow);
  animation:blink 2.6s ease-in-out infinite;
}
@keyframes blink{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.75)}}

.hero h1{
  font-size:clamp(40px,5.6vw,72px);
  line-height:1.03;letter-spacing:-3px;font-weight:800;
  margin-bottom:22px;
}
.hero h1 mark{
  background:linear-gradient(128deg,var(--c-blue) 15%,var(--c-blue2) 85%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;font-style:normal;
}
.hero-desc{
  font-size:15.5px;line-height:1.88;color:var(--c-muted);
  max-width:510px;margin-bottom:34px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:46px}

.btn{
  display:inline-flex;align-items:center;gap:7px;
  padding:12px 24px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;transition:all .22s;cursor:pointer;
}
.btn-p{
  color:#fff;
  background:linear-gradient(135deg,var(--c-blue),var(--c-blue2));
  box-shadow:0 8px 22px rgba(79,114,255,.28),0 1px 0 rgba(255,255,255,.2) inset;
}
.btn-p:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(79,114,255,.36)}
.btn-s{
  color:var(--c-text);
  background:var(--g-md);backdrop-filter:var(--bl-sm);
  border:1px solid var(--g-bd);
  box-shadow:var(--sh-sm),0 1px 0 rgba(255,255,255,.8) inset;
}
.btn-s:hover{background:var(--g-lg);transform:translateY(-2px)}

.hero-meta{display:flex;flex-wrap:wrap;gap:28px}
.meta-item{display:flex;flex-direction:column;gap:3px}
.meta-val{
  font-size:22px;font-weight:800;letter-spacing:-.8px;
  background:linear-gradient(130deg,var(--c-text),#334155);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.meta-lbl{font-size:11.5px;color:var(--c-faint);font-weight:500}

/* ─── hero visual ────────────────────────────────────── */
.hero-vis{position:relative;padding-top:10px}

/* ambient glow behind frame */
.vis-glow{
  position:absolute;inset:-40px;z-index:-1;
  background:
    radial-gradient(ellipse 70% 55% at 50% 50%, rgba(79,114,255,.18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 35% at 80% 20%, rgba(123,151,255,.13) 0%, transparent 60%);
  filter:blur(24px);pointer-events:none;
}

.dev-frame{
  position:relative;border-radius:var(--r-xl);
  background:linear-gradient(160deg,rgba(255,255,255,.82) 0%,rgba(255,255,255,.62) 100%);
  border:1px solid var(--g-bd2);
  backdrop-filter:var(--bl-lg);-webkit-backdrop-filter:var(--bl-lg);
  box-shadow:
    var(--sh-lg),
    0 1px 0 rgba(255,255,255,.95) inset,
    0 0 0 1px rgba(79,114,255,.06);
  padding:14px;overflow:hidden;
}
/* shimmer highlight */
.dev-frame::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-xl);
  background:linear-gradient(138deg,rgba(255,255,255,.6) 0%,transparent 52%);
  pointer-events:none;z-index:1;
}

/* top chrome bar */
.dev-bar{
  display:flex;align-items:center;gap:10px;
  padding:0 6px 12px;position:relative;z-index:2;
}
.dev-bar-dots{display:flex;gap:5px;flex-shrink:0}
.dev-bar-dots span{
  display:block;width:10px;height:10px;border-radius:50%;
}
.dev-bar-dots span:nth-child(1){background:#ff5f57;box-shadow:0 0 0 1px rgba(255,95,87,.3)}
.dev-bar-dots span:nth-child(2){background:#febc2e;box-shadow:0 0 0 1px rgba(254,188,46,.3)}
.dev-bar-dots span:nth-child(3){background:#28c840;box-shadow:0 0 0 1px rgba(40,200,64,.3)}
.dev-bar-title{
  flex:1;text-align:center;
  font-size:11.5px;font-weight:600;color:var(--c-muted);letter-spacing:.01em;
}
.dev-bar-ver{
  flex-shrink:0;padding:2px 9px;border-radius:6px;
  font-size:10px;font-weight:700;
  background:rgba(79,114,255,.1);color:var(--c-blue);
  border:1px solid rgba(79,114,255,.15);
}

.dev-screen{
  position:relative;border-radius:calc(var(--r-xl) - 18px);overflow:hidden;
  background:linear-gradient(135deg,#08101e 0%,#0d1f3c 60%,#0a1628 100%);
  aspect-ratio:16/10;z-index:2;
  box-shadow:0 2px 16px rgba(8,16,30,.28) inset;
  transform:translateZ(0);-webkit-transform:translateZ(0);
  isolation:isolate;
}
.dev-screen img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;object-position:center;
  opacity:.9;transition:opacity .4s;
  image-rendering:-webkit-optimize-contrast;
  image-rendering:crisp-edges;
  will-change:opacity;
}
.dev-screen:hover img{opacity:1}
/* screen reflection overlay */
.dev-screen::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(160deg,rgba(255,255,255,.07) 0%,transparent 40%);
}

/* floating card */
.float-card{
  position:absolute;left:-20px;bottom:20px;width:220px;
  padding:11px 13px;border-radius:var(--r-md);
  background:rgba(255,255,255,.97);border:1px solid rgba(255,255,255,.95);
  box-shadow:var(--sh-md),0 1px 0 rgba(255,255,255,.98) inset;
  animation:floatY 4.4s ease-in-out infinite;
  backface-visibility:hidden;-webkit-backface-visibility:hidden;
  -webkit-font-smoothing:antialiased;font-smooth:always;
}
@keyframes floatY{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-9px)}
}
.fc-head{display:flex;align-items:center;gap:8px;margin-bottom:7px}
.fc-ico{
  width:28px;height:28px;border-radius:8px;flex-shrink:0;
  background:linear-gradient(135deg,var(--c-blue),var(--c-blue2));
  display:flex;align-items:center;justify-content:center;
  font-size:13px;box-shadow:0 3px 8px var(--c-glow);
}
.fc-title{font-size:11.5px;font-weight:700;letter-spacing:-.1px}
.fc-sub{font-size:10px;color:var(--c-faint);margin-top:1px}
.fc-divider{height:1px;background:rgba(0,0,0,.05);margin:7px 0}
.fc-tags{display:flex;flex-wrap:wrap;gap:4px}
.fc-tag{
  padding:2px 7px;border-radius:5px;
  font-size:10px;font-weight:600;
  background:rgba(79,114,255,.07);color:var(--c-blue);
  border:1px solid rgba(79,114,255,.12);
}

/* spec pill */
.spec-pill{
  position:absolute;top:22px;right:-18px;
  padding:8px 14px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.88);border:1px solid rgba(255,255,255,.95);
  backdrop-filter:var(--bl-sm);-webkit-backdrop-filter:var(--bl-sm);
  box-shadow:var(--sh-sm),0 1px 0 rgba(255,255,255,.9) inset;
  font-size:11.5px;font-weight:600;
  display:flex;align-items:center;gap:7px;white-space:nowrap;
  animation:floatY 4.4s ease-in-out infinite reverse;
}
.spec-dot{
  width:7px;height:7px;border-radius:50%;flex-shrink:0;
  background:#22c55e;
  box-shadow:0 0 0 3px rgba(34,197,94,.22);
  animation:blink 2.6s ease-in-out infinite;
}

/* ─── section shell ──────────────────────────────────── */
.section{max-width:var(--max-w);margin:auto;padding:0 30px 90px}
.eyebrow{
  font-size:10.5px;font-weight:700;letter-spacing:.15em;
  text-transform:uppercase;color:var(--c-blue);margin-bottom:10px;
}
.s-title{
  font-size:clamp(30px,3.8vw,50px);font-weight:800;
  letter-spacing:-1.8px;line-height:1.07;margin-bottom:44px;
}
.s-title span{color:var(--c-muted);font-weight:400}

.divider{
  max-width:var(--max-w);margin:0 auto 76px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(79,114,255,.13),transparent);
}

/* ─── stats strip ────────────────────────────────────── */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:16px;margin-bottom:0;
  padding-bottom:0;
}
.stat-card{
  padding:24px 20px;border-radius:var(--r-md);
  background:var(--g-md);border:1px solid var(--g-bd);
  backdrop-filter:var(--bl-sm);
  box-shadow:var(--sh-sm),0 1px 0 rgba(255,255,255,.8) inset;
  text-align:center;
}
.stat-card .num{
  font-size:28px;font-weight:800;letter-spacing:-1px;
  color:var(--c-blue);margin-bottom:4px;
}
.stat-card .lbl{font-size:12px;color:var(--c-muted);font-weight:500}

/* ─── changelog/release cards ────────────────────────── */
.changelog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cl-card{
  padding:26px;border-radius:var(--r-lg);
  background:var(--g-md);border:1px solid var(--g-bd);
  backdrop-filter:var(--bl-sm);
  box-shadow:var(--sh-sm),0 1px 0 rgba(255,255,255,.8) inset;
  transition:transform .22s,box-shadow .22s;
}
.cl-card:hover{transform:translateY(-5px);box-shadow:var(--sh-md),0 1px 0 rgba(255,255,255,.8) inset}
.cl-card.latest{
  background:linear-gradient(135deg,rgba(79,114,255,.07),rgba(255,255,255,.64));
  border-color:rgba(79,114,255,.18);
}
.cl-ver{
  display:flex;align-items:center;gap:8px;margin-bottom:12px;
}
.cl-tag{
  padding:3px 10px;border-radius:6px;font-size:11px;font-weight:700;
  background:rgba(79,114,255,.1);color:var(--c-blue);
  border:1px solid rgba(79,114,255,.16);
}
.cl-tag.new{background:rgba(34,197,94,.1);color:#16a34a;border-color:rgba(34,197,94,.2)}
.cl-date{font-size:12px;color:var(--c-faint)}
.cl-card h3{font-size:16px;font-weight:700;margin-bottom:10px;letter-spacing:-.2px}
.cl-card ul{padding-left:0;list-style:none;display:flex;flex-direction:column;gap:6px}
.cl-card li{
  font-size:13px;color:var(--c-muted);line-height:1.6;
  padding-left:16px;position:relative;
}
.cl-card li::before{
  content:"";position:absolute;left:0;top:8px;
  width:5px;height:5px;border-radius:50%;
  background:var(--c-blue);opacity:.45;
}

/* ─── feature categories ─────────────────────────────── */
.feat-cats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}

.cat-card{
  padding:28px;border-radius:var(--r-lg);
  background:var(--g-md);border:1px solid var(--g-bd);
  backdrop-filter:var(--bl-sm);
  box-shadow:var(--sh-sm),0 1px 0 rgba(255,255,255,.8) inset;
  transition:transform .22s,box-shadow .22s;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md),0 1px 0 rgba(255,255,255,.8) inset}
.cat-card.wide{
  grid-column:1/-1;
  background:linear-gradient(135deg,rgba(79,114,255,.06),rgba(255,255,255,.62));
}
.cat-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:16px}
.cat-ico{
  flex-shrink:0;width:46px;height:46px;border-radius:14px;
  background:linear-gradient(135deg,rgba(79,114,255,.14),rgba(123,151,255,.06));
  border:1px solid rgba(79,114,255,.1);
  display:flex;align-items:center;justify-content:center;font-size:20px;
}
.cat-info h3{font-size:16px;font-weight:700;margin-bottom:4px;letter-spacing:-.2px}
.cat-info p{font-size:13px;color:var(--c-muted);line-height:1.7}
.cat-list{
  display:flex;flex-direction:column;gap:7px;
  border-top:1px solid rgba(255,255,255,.55);padding-top:16px;margin-top:4px;
}
.cat-item{
  display:flex;align-items:flex-start;gap:8px;
  font-size:13px;color:var(--c-muted);line-height:1.65;
  word-break:break-word;
}
.cat-item::before{
  content:"";flex-shrink:0;
  width:5px;height:5px;border-radius:50%;
  background:var(--c-blue);opacity:.5;
  margin-top:calc((1.65em - 5px) / 2);
}
.cat-item strong{color:var(--c-text);font-weight:600}

/* nano highlight */
.nano-banner{
  display:flex;align-items:center;gap:28px;
  padding:28px 32px;border-radius:var(--r-xl);
  background:linear-gradient(135deg,rgba(79,114,255,.08),rgba(255,255,255,.66));
  border:1px solid rgba(79,114,255,.15);
  backdrop-filter:var(--bl-md);
  box-shadow:var(--sh-md),0 1px 0 rgba(255,255,255,.9) inset;
  margin-bottom:24px;
}
.nano-ico{
  flex-shrink:0;width:58px;height:58px;border-radius:18px;
  background:linear-gradient(135deg,var(--c-blue),var(--c-blue2));
  display:flex;align-items:center;justify-content:center;
  font-size:26px;box-shadow:0 8px 20px var(--c-glow);
}
.nano-body h3{font-size:19px;font-weight:800;margin-bottom:6px;letter-spacing:-.3px}
.nano-body p{font-size:14px;color:var(--c-muted);line-height:1.75}
.nano-body p strong{color:var(--c-text)}

/* ─── editions ───────────────────────────────────────── */
.editions{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ed-card{
  padding:30px;border-radius:var(--r-lg);
  background:var(--g-md);border:1px solid var(--g-bd);
  backdrop-filter:var(--bl-sm);
  box-shadow:var(--sh-sm),0 1px 0 rgba(255,255,255,.8) inset;
}
.ed-card.lite{
  background:linear-gradient(135deg,rgba(79,114,255,.06),rgba(255,255,255,.62));
}
.ed-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.ed-badge{
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700;
  background:rgba(79,114,255,.1);color:var(--c-blue);
  border:1px solid rgba(79,114,255,.16);
}
.ed-badge.full-b{background:rgba(16,185,129,.1);color:#059669;border-color:rgba(16,185,129,.2)}
.ed-card h3{font-size:18px;font-weight:800;letter-spacing:-.3px}
.ed-card p{font-size:14px;color:var(--c-muted);line-height:1.8}
.ed-items{display:flex;flex-direction:column;gap:6px;margin-top:16px}
.ed-item{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-muted);
}
.ed-item::before{
  content:"✓";color:var(--c-blue);font-weight:700;font-size:12px;
}

/* ─── device table ───────────────────────────────────── */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.dev-card{
  padding:16px 18px;border-radius:var(--r-md);
  background:var(--g-md);border:1px solid var(--g-bd);
  backdrop-filter:var(--bl-sm);
  box-shadow:var(--sh-xs),0 1px 0 rgba(255,255,255,.8) inset;
  display:flex;align-items:center;justify-content:space-between;
  gap:10px;transition:all .2s;
}
.dev-card:hover{background:var(--g-lg);transform:translateY(-2px)}
.dev-card.planned{opacity:.6}
.dev-name{font-size:13px;font-weight:600}
.dev-sub{font-size:11px;color:var(--c-faint);margin-top:2px}
.dev-ver{
  flex-shrink:0;padding:3px 9px;border-radius:7px;
  font-size:11px;font-weight:700;white-space:nowrap;
  background:rgba(79,114,255,.09);color:var(--c-blue);
  border:1px solid rgba(79,114,255,.12);
}
.dev-ver.pl{
  background:rgba(148,163,184,.12);color:var(--c-faint);
  border-color:rgba(148,163,184,.2);
}

/* ─── install ────────────────────────────────────────── */
.install-grid{
  display:grid;grid-template-columns:300px 1fr;
  gap:26px;align-items:start;
}
.install-side{position:sticky;top:calc(var(--nav-h) + 20px)}
.glass-box{
  padding:28px;border-radius:var(--r-lg);
  background:var(--g-lg);border:1px solid var(--g-bd2);
  backdrop-filter:var(--bl-md);
  box-shadow:var(--sh-md),0 1px 0 rgba(255,255,255,.9) inset;
}
.glass-box h3{font-size:18px;font-weight:800;letter-spacing:-.4px;margin-bottom:12px}
.glass-box p{font-size:13.5px;line-height:1.85;color:var(--c-muted)}
.pill-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}
.pill{
  padding:5px 13px;border-radius:999px;
  font-size:11.5px;font-weight:600;
  background:rgba(79,114,255,.08);color:var(--c-blue);
  border:1px solid rgba(79,114,255,.13);
}

.steps{display:flex;flex-direction:column;gap:12px}
.step{
  display:flex;gap:16px;align-items:flex-start;
  padding:22px 24px;border-radius:var(--r-md);
  background:var(--g-sm);border:1px solid var(--g-bd);
  backdrop-filter:var(--bl-sm);
  box-shadow:var(--sh-xs),0 1px 0 rgba(255,255,255,.8) inset;
  transition:all .2s;
}
.step:hover{background:var(--g-md);box-shadow:var(--sh-sm),0 1px 0 rgba(255,255,255,.8) inset}
.step-n{
  flex-shrink:0;width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--c-blue),var(--c-blue2));
  color:#fff;font-size:12.5px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 5px 13px var(--c-glow);
}
.step-b h4{font-size:14.5px;font-weight:700;margin-bottom:5px;letter-spacing:-.2px}
.step-b p{font-size:13px;line-height:1.78;color:var(--c-muted);margin-bottom:9px}
.step-b p:last-child{margin-bottom:0}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{
  padding:4px 10px;border-radius:7px;
  font-size:11.5px;font-weight:600;
  font-family:"SF Mono","Fira Code",monospace;
  background:rgba(79,114,255,.08);color:var(--c-blue);
  border:1px solid rgba(79,114,255,.11);
}

/* ─── tips ───────────────────────────────────────────── */
.tips-wrap{
  padding:34px;border-radius:var(--r-xl);
  background:var(--g-lg);border:1px solid var(--g-bd2);
  backdrop-filter:var(--bl-md);
  box-shadow:var(--sh-md),0 1px 0 rgba(255,255,255,.9) inset;
}
.tips-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.tip{
  padding:22px;border-radius:var(--r-md);
  background:rgba(255,255,255,.42);border:1px solid rgba(255,255,255,.68);
  box-shadow:var(--sh-xs);transition:all .2s;
}
.tip:hover{background:rgba(255,255,255,.62);transform:translateY(-3px)}
.tip-ico{font-size:20px;margin-bottom:10px}
.tip h4{font-size:14.5px;font-weight:700;margin-bottom:8px;letter-spacing:-.2px}
.tip p{font-size:13px;line-height:1.78;color:var(--c-muted)}

/* ─── credits ────────────────────────────────────────── */
.credits-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cred-card{
  padding:24px;border-radius:var(--r-md);
  background:var(--g-md);border:1px solid var(--g-bd);
  backdrop-filter:var(--bl-sm);
  box-shadow:var(--sh-sm),0 1px 0 rgba(255,255,255,.8) inset;
}
.cred-card h4{font-size:15px;font-weight:700;margin-bottom:7px}
.cred-card p{font-size:13px;color:var(--c-muted);line-height:1.75}
.cred-card a{color:var(--c-blue)}
.cred-card a:hover{text-decoration:underline}

/* ─── footer ─────────────────────────────────────────── */
.footer{
  border-top:1px solid rgba(255,255,255,.58);
  background:rgba(241,245,251,.52);
  backdrop-filter:var(--bl-sm);
}
.footer-inner{
  max-width:var(--max-w);margin:auto;padding:28px 30px;
  display:flex;flex-direction:column;
  align-items:center;gap:10px;
  text-align:center;
}
.footer-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.92);
  box-shadow:var(--sh-xs),0 1px 0 rgba(255,255,255,.9) inset;
  font-size:13px;font-weight:500;color:var(--c-muted);
}
.footer-badge a{
  font-weight:700;color:var(--c-blue);
  transition:opacity .15s;
}
.footer-badge a:hover{opacity:.75}
.footer-dot{
  width:4px;height:4px;border-radius:50%;
  background:rgba(148,163,184,.4);flex-shrink:0;
}
.footer-copy{
  font-size:11.5px;color:var(--c-faint);
}

/* ─── custom tooltip ────────────────────────────────────── */
.cti-host{
  position:relative;display:inline;
}
.cti-host>strong{
  cursor:help;
  border-bottom:1.5px dashed rgba(79,114,255,.45);
  padding-bottom:1px;
  transition:border-color .15s;
}
.cti-host:hover>strong{
  border-color:var(--c-blue);
  color:var(--c-blue);
}
.cti-pop{
  position:absolute;
  bottom:calc(100% + 10px);
  left:50%;transform:translateX(-50%) translateY(6px);
  width:300px;
  padding:12px 16px;
  border-radius:var(--r-md);
  background:rgba(255,255,255,.92);
  backdrop-filter:var(--bl-md);
  border:1px solid rgba(255,255,255,.95);
  box-shadow:var(--sh-md),0 0 0 1px rgba(79,114,255,.08);
  display:flex;align-items:flex-start;gap:10px;
  opacity:0;pointer-events:none;
  transition:opacity .2s ease,transform .2s ease;
  z-index:200;
  white-space:normal;
}
.cti-pop::after{
  content:'';
  position:absolute;
  top:100%;left:50%;transform:translateX(-50%);
  border:6px solid transparent;
  border-top-color:rgba(255,255,255,.92);
}
.cti-ico{
  font-size:20px;line-height:1;flex-shrink:0;margin-top:1px;
}
.cti-text{
  font-size:12.5px;line-height:1.75;
  color:var(--c-muted);
  font-weight:400;
}
.cti-host:hover .cti-pop{
  opacity:1;
  transform:translateX(-50%) translateY(0);
}

/* ─── inline code ────────────────────────────────────── */
code{
  font-family:"SF Mono","Fira Code","Cascadia Code",monospace;
  font-size:.85em;
  padding:2px 7px;border-radius:6px;
  background:rgba(79,114,255,.08);color:var(--c-blue);
  border:1px solid rgba(79,114,255,.13);
  white-space:nowrap;
}

/* ─── countdown ─────────────────────────────────────── */
.countdown-wrap{
  padding:30px 32px;border-radius:var(--r-xl);
  background:linear-gradient(135deg,rgba(79,114,255,.07) 0%,rgba(255,255,255,.66) 100%);
  border:1px solid rgba(79,114,255,.14);
  backdrop-filter:var(--bl-md);-webkit-backdrop-filter:var(--bl-md);
  box-shadow:var(--sh-md),0 1px 0 rgba(255,255,255,.92) inset;
}
.cd-eyebrow{
  display:flex;align-items:center;gap:8px;margin-bottom:20px;
  font-size:10.5px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--c-blue);
}
.cd-eyebrow span{font-size:14px}
.countdown-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cd-card{
  padding:22px 24px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.88);
  box-shadow:var(--sh-sm),0 1px 0 rgba(255,255,255,.9) inset;
  transition:transform .22s,box-shadow .22s;
}
.cd-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md),0 1px 0 rgba(255,255,255,.9) inset}
.cd-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.cd-ico{
  flex-shrink:0;width:42px;height:42px;border-radius:13px;
  background:linear-gradient(135deg,var(--c-blue),var(--c-blue2));
  display:flex;align-items:center;justify-content:center;
  font-size:19px;box-shadow:0 4px 12px var(--c-glow);
}
.cd-device{font-size:14px;font-weight:700;letter-spacing:-.2px;margin-bottom:3px}
.cd-ver{font-size:11px;color:var(--c-faint)}
.cd-timer{display:flex;align-items:flex-start;gap:5px;margin-bottom:13px}
.cd-unit{
  display:flex;flex-direction:column;align-items:center;
  padding:8px 10px;border-radius:10px;min-width:50px;
  background:rgba(79,114,255,.07);border:1px solid rgba(79,114,255,.11);
}
.cd-n{
  font-size:22px;font-weight:800;letter-spacing:-.5px;
  color:var(--c-blue);line-height:1;font-variant-numeric:tabular-nums;
}
.cd-u{font-size:10px;color:var(--c-faint);font-weight:500;margin-top:3px}
.cd-sep{
  font-size:18px;font-weight:700;color:rgba(79,114,255,.3);
  line-height:1;align-self:flex-start;padding-top:9px;
}
.cd-footer{
  font-size:11.5px;color:var(--c-muted);
  padding-top:11px;border-top:1px solid rgba(0,0,0,.05);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.cd-footer a{color:var(--c-blue);font-weight:600}
.cd-footer a:hover{text-decoration:underline}
.cd-done .cd-n{color:#16a34a}
.cd-done .cd-unit{background:rgba(34,197,94,.07);border-color:rgba(34,197,94,.14)}
/* lightbox */
.lb-overlay{
  display:none;position:fixed;inset:0;z-index:9999;
  background:rgba(0,0,0,.82);backdrop-filter:blur(8px);
  align-items:center;justify-content:center;cursor:zoom-out;
  padding:16px;
}
.lb-overlay.open{display:flex}
.lb-overlay img{
  max-width:min(92vw,1080px);max-height:90vh;
  border-radius:var(--r-lg);
  box-shadow:0 12px 64px rgba(0,0,0,.7);
  pointer-events:none;
}
.lb-close{
  position:fixed;top:16px;right:16px;
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;color:#fff;
  background:rgba(255,255,255,.15);
  border:1px solid rgba(255,255,255,.22);
  border-radius:50%;
  cursor:pointer;
  backdrop-filter:blur(6px);
  opacity:.88;
  transition:background .18s,opacity .18s;
}
.lb-close:hover{background:rgba(255,255,255,.28);opacity:1}
#heroImg{cursor:zoom-in}
@media(max-width:820px){.countdown-cards{grid-template-columns:1fr}}
@media(max-width:600px){
  .cd-unit{min-width:42px;padding:6px 8px}
  .cd-n{font-size:18px}
  .countdown-wrap{padding:20px}
}

/* ─── install tabs ──────────────────────────────────── */
.inst-tabs{
  display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px;
  padding:6px;border-radius:999px;
  background:rgba(255,255,255,.38);border:1px solid rgba(255,255,255,.65);
  width:fit-content;
}
.inst-tab{
  -webkit-appearance:none;appearance:none;
  font-family:inherit;
  padding:9px 20px;border-radius:999px;
  font-size:13px;font-weight:600;cursor:pointer;
  border:1px solid rgba(200,212,230,.55);
  background:var(--g-md);color:var(--c-muted);
  backdrop-filter:var(--bl-sm);-webkit-backdrop-filter:var(--bl-sm);
  box-shadow:var(--sh-xs),0 1px 0 rgba(255,255,255,.8) inset;
  transition:background .18s,color .18s,box-shadow .18s;
  outline:none;
  -webkit-tap-highlight-color:transparent;
  touch-action:manipulation;
  user-select:none;-webkit-user-select:none;
}
.inst-tab:hover{background:var(--g-md);color:var(--c-text)}
.inst-tab.active{
  background:linear-gradient(135deg,var(--c-blue),var(--c-blue2));
  color:#fff;border-color:transparent;
  box-shadow:0 4px 14px var(--c-glow);
}
.inst-panel{
  display:none;
  animation:none;
}
.inst-panel.active{
  display:block;
  animation:panel-in .18s ease;
}
@keyframes panel-in{
  from{opacity:0;transform:translateY(4px)}
  to{opacity:1;transform:translateY(0)}
}

/* ─── mobile nav ──────────────────────────────────────── */
.nav-ham{
  display:none;flex-direction:column;justify-content:center;gap:5.5px;
  width:38px;height:38px;padding:7px;
  background:transparent;border:none;cursor:pointer;
  border-radius:10px;transition:background .15s;flex-shrink:0;
}
.nav-ham:hover{background:rgba(255,255,255,.55)}
.nav-ham span{
  display:block;height:2px;width:100%;border-radius:2px;
  background:var(--c-text);transition:transform .22s,opacity .22s;
}
.nav-ham.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.nav-ham.open span:nth-child(2){opacity:0;transform:scaleX(0)}
.nav-ham.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
.nav-mobile{
  position:fixed;top:var(--nav-h);left:0;right:0;z-index:899;
  padding:10px 16px 18px;
  background:rgba(241,245,251,.97);
  backdrop-filter:var(--bl-md);-webkit-backdrop-filter:var(--bl-md);
  border-bottom:1px solid rgba(255,255,255,.62);
  box-shadow:var(--sh-md);
  flex-direction:column;gap:2px;
  display:none;
}
.nav-mobile.open{display:flex}
.nav-mobile a{
  padding:13px 16px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--c-muted);
  transition:background .15s,color .15s;
}
.nav-mobile a:hover,.nav-mobile a:active{background:rgba(255,255,255,.7);color:var(--c-text)}
.nav-mobile a.nav-m-cta{
  margin-top:6px;color:var(--c-blue);font-weight:700;
  background:rgba(79,114,255,.08);
  border:1px solid rgba(79,114,255,.15);
  text-align:center;
}

/* ─── responsive ─────────────────────────────────────── */
@media(max-width:1080px){
  .stats-strip{grid-template-columns:repeat(2,1fr)}
  .changelog-grid{grid-template-columns:1fr 1fr}
  .feat-cats{grid-template-columns:1fr}
  .cat-card.wide{grid-column:auto}
  .editions{grid-template-columns:1fr}
  .device-grid{grid-template-columns:repeat(2,1fr)}
  .install-grid{grid-template-columns:1fr}
  .install-side{position:static}
  .tips-grid{grid-template-columns:repeat(2,1fr)}
  .credits-grid{grid-template-columns:1fr 1fr}
  .float-card{left:-8px;width:200px}
}
@media(max-width:820px){
  .hero{grid-template-columns:1fr;gap:40px;padding:70px 24px 56px}
  .changelog-grid{grid-template-columns:1fr}
  .device-grid{grid-template-columns:1fr 1fr}
  .spec-pill{display:none}
  .float-card{position:static;width:100%;margin-top:16px;left:auto;bottom:auto;animation:none}
  .nano-banner{flex-direction:column;gap:16px;padding:24px}
  .section{padding:0 24px 70px}
  .divider{margin-bottom:56px}
  .inst-tabs{width:100%;overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .inst-tab{white-space:nowrap;flex-shrink:0}
  .inst-tabs::-webkit-scrollbar{display:none}
}
@media(max-width:600px){
  .nav-inner{padding:0 16px}
  .nav-links{display:none}
  .nav-ham{display:flex}
  .hero{padding:52px 16px 40px;gap:28px}
  .hero h1{letter-spacing:-2px}
  .hero-desc{max-width:100%;font-size:14.5px}
  .hero-btns{gap:9px}
  .btn{padding:11px 18px;font-size:13.5px}
  .hero-meta{gap:16px}
  .meta-val{font-size:19px}
  .section{padding:0 16px 52px}
  .s-title{letter-spacing:-1px;margin-bottom:28px}
  .divider{margin-bottom:40px}
  .stats-strip{grid-template-columns:1fr 1fr}
  .device-grid{grid-template-columns:1fr}
  .tips-grid{grid-template-columns:1fr}
  .credits-grid{grid-template-columns:1fr}
  .tips-wrap{padding:0}
  .float-card{position:static;width:100%;margin-top:12px;animation:none}
  .spec-pill{display:none}
  .inst-tabs{
    width:100%;overflow-x:auto;flex-wrap:nowrap;
    border-radius:var(--r-md);padding:8px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .inst-tabs::-webkit-scrollbar{display:none}
  .inst-tab{white-space:nowrap;flex-shrink:0;padding:9px 15px}
  .footer-badge{flex-wrap:wrap;border-radius:var(--r-md);gap:5px 8px;padding:10px 14px}
  .footer-inner{padding:20px 16px}
  .cti-pop{
    bottom:auto;top:calc(100% + 8px);
    left:0;transform:translateX(0) translateY(-6px);
    width:min(280px,calc(100vw - 32px));
  }
  .cti-pop::after{
    top:auto;bottom:100%;
    border-top-color:transparent;
    border-bottom-color:rgba(255,255,255,.92);
  }
  .cti-host:hover .cti-pop{transform:translateX(0) translateY(0)}
  .cat-item{display:block;position:relative;padding-left:13px}
  .cat-item::before{position:absolute;left:0;top:calc((1.65em - 5px) / 2);margin-top:0}
  .cat-item strong{display:block}
  .cd-footer{flex-wrap:wrap;gap:6px 10px}
}
@media(max-width:440px){
  .hero h1{font-size:36px}
  .cd-unit{min-width:36px;padding:5px 6px}
  .cd-n{font-size:15px}
  .cl-card{padding:18px}
  .cat-card{padding:20px 18px}
}

/* ── GitHub new version badge ── */
.gh-ver-badge{
  display:inline-flex;align-items:center;gap:8px;
  margin-bottom:20px;
  padding:5px 8px 5px 11px;border-radius:999px;
  background:rgba(34,197,94,.07);
  border:1px solid rgba(34,197,94,.22);
  font-size:12px;font-weight:600;
  opacity:0;transform:translateY(5px);
  transition:opacity .4s ease,transform .4s ease;
  text-decoration:none;
}
.gh-ver-badge.loaded{
  opacity:1;transform:translateY(0);
}
.ghb-dot{
  width:6px;height:6px;border-radius:50%;flex-shrink:0;
  background:#16a34a;
  box-shadow:0 0 0 3px rgba(34,197,94,.18);
  animation:ghb-pulse 2.2s ease-in-out infinite;
}
@keyframes ghb-pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 3px rgba(34,197,94,.18)}
  50%{opacity:.5;box-shadow:0 0 0 5px rgba(34,197,94,.06)}
}
.ghb-text{color:#166534;font-weight:500}
.ghb-text strong{color:#15803d;font-weight:700}
.ghb-link{
  color:#15803d;font-weight:700;font-size:11.5px;
  text-decoration:none;
  padding:2px 9px;border-radius:999px;
  background:rgba(34,197,94,.12);
  border:1px solid rgba(34,197,94,.25);
  transition:background .18s,border-color .18s;
  white-space:nowrap;
}
.ghb-link:hover{background:rgba(34,197,94,.2);border-color:rgba(34,197,94,.4)}