:root{
  --ink:#152331;
  --muted:#506171;
  --line:#dce3e9;
  --paper:#fff;
  --soft:#f4f7fa;
  --blue:#1758b6;
  --blue-dark:#134a98;
  --navy:#12283b;
  --green:#107553;
  --green-soft:#e6f4ee;
  --amber:#865000;
  --amber-soft:#fff3dc;
  --red:#8a2626;
  --red-soft:#fdecec;
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{
  margin:0;
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{width:min(1180px,100% - 3rem);margin-inline:auto}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:var(--blue);color:#fff;padding:8px 14px;border-radius:8px;z-index:100}

/* ---------- Topbar ---------- */
.topbar{position:relative;z-index:5;background:#fff;border-bottom:1px solid var(--line)}
.topbar .inner{width:min(1180px,100% - 3rem);margin-inline:auto;min-height:78px;padding:.8rem 0;display:flex;align-items:center;gap:2rem}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:700;color:var(--navy);font-size:1.2rem;letter-spacing:-.02em;text-decoration:none}
.brand .mark{width:26px;height:26px;border-radius:6px;background:linear-gradient(135deg,var(--blue),#2f80ed);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:.78rem;font-weight:800}
.brand:hover{text-decoration:none}
.nav{display:flex;align-items:center;gap:1.3rem;margin-inline-start:auto}
.nav a{color:var(--muted);font-size:.875rem;font-weight:550;text-decoration:none}
.nav a:hover{color:var(--ink);text-decoration:none}
.nav a.active{color:var(--blue);font-weight:600}
.nav a.ext{color:var(--blue)}

/* ---------- Hero (home, two columns) ---------- */
.hero{display:grid;grid-template-columns:1.6fr 1fr;align-items:start;gap:3.5rem;padding:3rem 0 2.8rem}
.hero .eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--blue);margin:0 0 .6rem;font-size:.75rem;font-weight:650}
.hero h1{font-size:clamp(1.65rem,3.1vw,2.7rem);line-height:1.18;margin:0 0 1rem;letter-spacing:-.02em;color:var(--navy);font-weight:700}
.hero .intro{color:var(--muted);max-width:54ch;font-size:1.08rem;line-height:1.6;margin:0 0 1rem}
.hero .small{font-size:.875rem}
.hero .muted{color:var(--muted)}
.hero .home-phone-link{font-size:.875rem;color:var(--muted);margin:.5rem 0 0}
.download-note{color:var(--muted);font-size:.75rem;margin:.4rem 0 0}

/* ---------- Actions / Buttons ---------- */
.actions{display:flex;flex-wrap:wrap;gap:.75rem;margin:1.5rem 0}
.button{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:6px;min-height:44px;padding:.7rem 1.05rem;font-size:.875rem;font-weight:600;line-height:1.5;text-decoration:none;cursor:pointer;font-family:inherit}
.button:hover{background:var(--soft);text-decoration:none}
.button.primary{background:var(--blue);color:#fff;border-color:var(--blue)}
.button.primary:hover{background:var(--blue-dark)}
.button.ghost{color:var(--muted)}
.button.ghost:hover{background:var(--soft)}

/* ---------- Tag ---------- */
.tag{color:#204a8d;background:#e9eff8;border-radius:4px;display:inline-flex;align-items:center;gap:.4rem;padding:.2rem .55rem;font-size:.75rem;font-weight:550}
.tag.preview{color:#865000;background:#fff3dc}
.tag.reviewed{color:#176441;background:#e9f6ee}

/* ---------- Release card (hero right) ---------- */
.release-card{border-inline-start:1px solid var(--line);padding:.3rem 0 .3rem 2rem}
.release-card .eyebrow{color:var(--muted);letter-spacing:.06em;text-transform:uppercase;font-size:.75rem;font-weight:650;margin:0 0 .6rem}
.release-heading{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem;margin:.8rem 0 .65rem}
.release-version{letter-spacing:-.04em;margin:0;font-size:2.8rem;font-weight:700;line-height:1.15;font-variant-numeric:tabular-nums}
.release-headline{color:var(--muted);margin:0 0 .8rem;font-size:.875rem;line-height:1.7}
.release-published dl{display:flex;flex-wrap:wrap;gap:.3rem .55rem;margin:0;color:var(--muted);font-size:.75rem}
.release-published dd{margin:0;font-variant-numeric:tabular-nums}
.release-facts{border-top:1px solid var(--line);display:grid;gap:.65rem;margin:1.2rem 0 .65rem;padding-top:1rem}
.release-facts>div{display:grid;grid-template-columns:1fr 1fr;align-items:baseline;gap:1rem}
.release-facts dt{color:var(--muted);font-size:.8125rem}
.release-facts dd{text-align:end;margin:0;font-size:.875rem;font-weight:550}
.release-history{padding:.35rem 0;font-size:.8125rem;display:inline-block;color:var(--blue);font-weight:600}
.release-history:hover{text-decoration:underline}

/* ---------- Page header (subpages) ---------- */
.page-header{padding:2.4rem 0 1.6rem}
.breadcrumb{list-style:none;display:flex;flex-wrap:wrap;gap:.5rem;padding:0;margin:0 0 1rem;font-size:.85rem;color:var(--muted)}
.breadcrumb li{display:flex;align-items:center;gap:.5rem}
.breadcrumb li:not(:last-child)::after{content:"/";color:var(--line)}
.breadcrumb a{color:var(--muted);text-decoration:none}
.breadcrumb a:hover{color:var(--ink)}
.page-header h1{font-size:clamp(1.65rem,3.1vw,2.4rem);line-height:1.2;margin:0 0 .6rem;letter-spacing:-.02em;color:var(--navy);font-weight:700}
.page-header .answer{color:var(--muted);max-width:60ch;font-size:1.05rem;line-height:1.6;margin:0}

/* ---------- Sections ---------- */
.section{border-top:1px solid var(--line);padding:2.5rem 0}
.section-header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:1rem;margin-bottom:1.4rem}
.section-header h2{margin:0;font-size:1.5rem;letter-spacing:-.01em;color:var(--navy)}
.section-header a{font-size:.875rem;color:var(--blue)}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--blue);margin:0 0 .6rem;font-size:.75rem;font-weight:650}
h2.sec{font-size:1.5rem;letter-spacing:-.01em;margin:0 0 .5rem;color:var(--navy)}
.sec-lead{color:var(--muted);max-width:60ch;margin:0 0 1.4rem}
h3.sub{font-size:1.2rem;color:var(--navy);margin:1.8rem 0 .6rem}
p{margin:0 0 1rem}
ul,ol{margin:0 0 1rem;padding-left:1.4rem}
li{margin:.25rem 0}
.prose{max-width:60ch}
.prose p{color:var(--muted)}
.note{margin-top:1.2rem;color:var(--muted);font-size:.95rem}
.note a{font-weight:600}
.small{font-size:.875rem;color:var(--muted)}

/* ---------- Cards ---------- */
.cards{display:grid;gap:1rem}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.cards.c2{grid-template-columns:repeat(2,1fr)}
.card{border:1px solid var(--line);background:#fff;border-radius:7px;padding:1.25rem;min-width:0}
.card .muted{font-size:.875rem}
.card-kicker{color:var(--muted);margin-bottom:.7rem;font-size:.75rem}
.linkcard{display:block;color:var(--ink);border:1px solid var(--line);background:#fff;border-radius:7px;padding:1.25rem;min-height:112px;transition:background .15s,border-color .15s}
.linkcard:hover{background:#fafcff;border-color:#9ab5d5;text-decoration:none}
.linkcard h3{margin:0 0 .4rem;font-size:1.1rem;color:var(--navy)}
.linkcard p{margin:0;color:var(--muted);font-size:.9rem}
.linkcard .arrow{margin-top:1rem;color:var(--blue);font-weight:600;font-size:.875rem}
.feat{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.feat a{border:1px solid var(--line);border-radius:7px;padding:1.25rem;color:var(--ink);font-weight:600;background:#fff;transition:background .15s,border-color .15s}
.feat a:hover{background:#fafcff;border-color:#9ab5d5;text-decoration:none}

/* ---------- Panel / form ---------- */
.panel{border:1px solid var(--line);border-radius:8px;background:var(--soft);overflow:hidden}
.panel .phead{padding:1.25rem 1.5rem;border-bottom:1px solid var(--line);background:var(--soft)}
.panel .phead h3{margin:0 0 .25rem;font-size:1.2rem;color:var(--navy)}
.panel .phead p{margin:0;color:var(--muted);font-size:.92rem}
.form{padding:1.5rem;display:grid;grid-template-columns:repeat(2,1fr);gap:1.1rem}
.field{display:flex;flex-direction:column;gap:.4rem}
.field.full{grid-column:1/-1}
.field label{font-size:.88rem;font-weight:600;color:var(--ink)}
.field label .req{color:#c0392b}
.field .hint{font-size:.8rem;color:var(--muted);font-weight:400}
.field select,.field input,.field textarea{font-family:inherit;font-size:.95rem;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:6px;padding:.6rem .75rem;width:100%}
.field textarea{min-height:90px;resize:vertical}
.field select:focus,.field input:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(23,88,182,.15)}
.actions.g{grid-column:1/-1;display:flex;gap:.75rem;align-items:center;margin-top:.4rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:inherit;font-size:.875rem;font-weight:600;border-radius:6px;padding:.7rem 1.05rem;cursor:pointer;border:1px solid transparent;min-height:44px}
.btn.primary{background:var(--blue);color:#fff}
.btn.primary:hover{background:var(--blue-dark);text-decoration:none}
.btn.ghost{background:#fff;color:var(--muted);border-color:var(--line)}
.btn.ghost:hover{background:var(--soft);text-decoration:none}
.result{grid-column:1/-1;margin-top:.2rem;padding:1rem 1.1rem;border-radius:8px;font-size:.95rem;display:none}
.result.show{display:block}
.result.ok{background:var(--green-soft);border:1px solid #bfe3d3;color:#0c5a40}
.result.warn{background:var(--amber-soft);border:1px solid #f0dcae;color:var(--amber)}
.result.no{background:var(--red-soft);border:1px solid #f3c9c9;color:var(--red)}

/* ---------- Status badges ---------- */
.status{display:inline-flex;align-items:center;gap:.45rem;font-size:.8rem;font-weight:600;padding:.25rem .7rem;border-radius:999px;margin-bottom:.6rem}
.status.ok{color:var(--green);background:var(--green-soft);border:1px solid #bfe3d3}
.status.warn{color:var(--amber);background:var(--amber-soft);border:1px solid #f0dcae}
.status.no{color:var(--red);background:var(--red-soft);border:1px solid #f3c9c9}
.status.limited{color:var(--muted);background:#eef2f6;border:1px solid var(--line)}

/* ---------- Feed card ---------- */
.feed{border:1px solid var(--line);border-radius:7px;padding:1.15rem 1.25rem;background:#fff}
.feed h3{margin:0 0 .4rem;font-size:1.08rem;color:var(--navy)}
.feed .meta{font-size:.84rem;color:var(--muted);margin:0 0 .6rem}
.feed .body{font-size:.93rem;color:var(--ink);margin:0 0 .6rem}

/* ---------- Compatibility table ---------- */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:8px;margin-top:.5rem}
table.cmp{width:100%;border-collapse:collapse;font-size:.9rem;min-width:760px}
table.cmp th,table.cmp td{border-bottom:1px solid var(--line);padding:.65rem .75rem;text-align:left;vertical-align:top}
table.cmp thead th{background:var(--soft);color:var(--navy);font-weight:700;position:sticky;top:0}
table.cmp tbody tr:hover{background:#fafcfe}
.tagcell{white-space:nowrap}

/* ---------- Versions list ---------- */
.ver{display:flex;gap:1rem;padding:1.25rem 0;border-bottom:1px solid var(--line)}
.ver:last-child{border-bottom:0}
.ver .vd{flex:0 0 120px;font-weight:700;color:var(--navy)}
.ver .vt{font-weight:700;color:var(--ink);margin:0 0 .4rem}
.ver .vb{margin:0;color:var(--muted);font-size:.93rem}
.ver ul{margin:.5rem 0 0}

/* ---------- Version box (download) ---------- */
.verbox{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff;margin-top:1.4rem}
.verbox .top{display:flex;flex-wrap:wrap;align-items:baseline;gap:.6rem;padding:1.1rem 1.25rem;border-bottom:1px solid var(--line);background:var(--soft)}
.verbox .top .v{font-size:1.25rem;font-weight:700;color:var(--navy)}
.verbox .tag{font-size:.78rem;font-weight:600}
.verbox .top .date{margin-left:auto;font-size:.85rem;color:var(--muted)}
.verbox .desc{padding:1rem 1.25rem;color:var(--muted);margin:0}
.specs{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line)}
.specs div{padding:.8rem 1.25rem;border-bottom:1px solid var(--line)}
.specs div:nth-child(odd){border-right:1px solid var(--line)}
.specs .k{font-size:.8rem;color:var(--muted);margin-bottom:.2rem}
.specs .val{font-weight:600;color:var(--ink)}
.verbox .more{padding:.9rem 1.25rem;color:var(--muted);font-size:.92rem}
.verbox .more a{font-weight:600}

/* ---------- Callout ---------- */
.callout{border:1px solid var(--line);border-left:4px solid var(--blue);background:var(--soft);border-radius:8px;padding:.9rem 1.1rem;margin:1.2rem 0;font-size:.94rem;color:var(--muted)}
.callout.warn{border-left-color:var(--amber);background:var(--amber-soft)}
.callout.no{border-left-color:var(--red);background:var(--red-soft)}

/* ---------- Related links ---------- */
ul.links{list-style:none;padding:0;margin:0;display:grid;gap:.6rem}
ul.links li a{display:block;border:1px solid var(--line);border-radius:7px;padding:.75rem 1rem;color:var(--ink);font-weight:500;background:#fff;transition:background .15s,border-color .15s}
ul.links li a:hover{background:#fafcff;border-color:#9ab5d5;text-decoration:none}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--line);background:var(--soft);margin-top:3rem;padding:2rem 0 1.4rem}
.footer .grid{width:min(1180px,100% - 3rem);margin-inline:auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem}
.footer h4{font-size:.82rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin:0 0 .8rem}
.footer a{display:block;color:var(--ink);font-size:.92rem;padding:.2rem 0}
.footer a:hover{color:var(--blue)}
.footer .about p{color:var(--muted);font-size:.9rem;margin:0 0 .6rem}
.footer .legal{width:min(1180px,100% - 3rem);margin:1.5rem auto 0;padding:1.1rem 0 0;border-top:1px solid var(--line);font-size:.85rem;color:var(--muted);display:flex;flex-wrap:wrap;gap:.4rem 1rem;justify-content:space-between}

@media(max-width:800px){
  .topbar .inner{flex-wrap:wrap;min-height:auto;gap:.5rem 1rem;padding:.7rem 0}
  .nav{order:2;width:100%;gap:1rem;overflow-x:auto;padding:.2rem 0}
  .hero{grid-template-columns:1fr;gap:1.5rem;padding:2rem 0}
  .release-card{border-inline-start:0;border-top:1px solid var(--line);padding:1.3rem 0 0}
  .cards.c3,.cards.c2,.feat{grid-template-columns:1fr}
  .form{grid-template-columns:1fr}
  .specs{grid-template-columns:1fr}
  .specs div:nth-child(odd){border-right:0}
  .footer .grid{grid-template-columns:1fr}
  .ver{flex-direction:column;gap:.4rem}
  .ver .vd{flex:none}
}

/* ---------- Screenshots (home) ---------- */
.shots{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.shot{border:1px solid var(--line);border-radius:7px;overflow:hidden;background:#fff}
.shot .img{aspect-ratio:16/10;background:linear-gradient(135deg,#0f2740,#1c4d80);display:flex;align-items:center;justify-content:center;color:#cfe0f6;font-size:.9rem}
.shot img{width:100%;height:100%;object-fit:cover}
.shot .cap{padding:.9rem 1rem;font-size:.9rem;color:var(--muted)}
.shot .cap b{color:var(--ink);display:block;margin-bottom:.2rem;font-size:.98rem}

/* ---------- Numbered cards (troubleshooting) ---------- */
.num{display:flex;gap:14px;align-items:flex-start}
.num .n{flex:0 0 auto;width:34px;height:34px;border-radius:7px;background:var(--soft);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--blue)}
.num h3{margin:0 0 .2rem;font-size:1.05rem;color:var(--navy)}
.num p{margin:0;color:var(--muted);font-size:.9rem}

/* ---------- Feed source + Sources ---------- */
.feed .src{font-size:.84rem;color:var(--muted);margin:0}
.feed .src a{font-weight:600}
.sources{font-size:.88rem;color:var(--muted);line-height:2}
.sources a{color:var(--blue)}