:root{
  --bg:#e8f0f2;
  --ink:#1c2a32;
  --muted:#5a6b74;
  --line:#b8cdd4;
  --soft:#f4fafb;
  --accent:#1a8a8a;
  --accent2:#2d5a6a;
  --band:#1e3a45;
  --spine:#3a9b9b;
  --dot:#d4784a;
  --max:1080px;
  --radius:12px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:
    linear-gradient(180deg,rgba(26,138,138,.06),transparent 280px),
    radial-gradient(720px 360px at 80% -5%,rgba(45,90,106,.12),transparent 55%),
    var(--bg);
  line-height:1.78;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline;color:var(--accent2)}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 1.1rem}

/* header */
.site-header{
  position:sticky;top:0;z-index:40;
  background:rgba(244,250,251,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:62px;gap:1rem;
}
.brand{display:flex;align-items:center;gap:.6rem;color:inherit;text-decoration:none;font-weight:700}
.brand img{width:36px;height:36px;border-radius:9px}
.nav-desktop{display:flex;gap:1rem;flex-wrap:wrap}
.nav-desktop a{color:var(--ink);font-size:.94rem}
.menu-toggle{
  display:none;border:1px solid var(--line);background:var(--soft);
  border-radius:9px;padding:.45rem .7rem;cursor:pointer;color:var(--ink);
}
#mobile-nav{
  display:none;border-top:1px solid var(--line);background:var(--soft);
}
#mobile-nav.open{display:block}
#mobile-nav a{
  display:block;padding:.72rem 1.1rem;border-bottom:1px solid var(--line);color:var(--ink);
}
.ads-slot{margin:1rem auto 0;max-width:var(--max);padding:0 1.1rem}

/* timeline intro */
.tl-intro{
  padding:1.6rem 0 1rem;
  text-align:center;
  max-width:720px;
  margin:0 auto;
}
.tl-intro .eyebrow{
  display:inline-block;margin:0 0 .5rem;padding:.2rem .7rem;
  font-size:.82rem;letter-spacing:.04em;color:var(--accent2);
  border:1px solid var(--line);border-radius:999px;background:var(--soft);
}
.tl-intro h1{
  margin:.2rem 0 .8rem;
  font-size:clamp(1.5rem,3.4vw,2.15rem);
  line-height:1.3;color:var(--band);
}
.tl-intro .lead{margin:0;color:var(--muted);font-size:1.02rem}
.tl-cta{
  margin-top:1.1rem;display:flex;gap:.65rem;justify-content:center;flex-wrap:wrap;
}
.btn{
  display:inline-block;padding:.62rem 1.05rem;border-radius:8px;
  background:var(--accent);color:#fff;font-weight:600;text-decoration:none;
}
.btn:hover{text-decoration:none;filter:brightness(1.05)}
.btn.ghost{
  background:transparent;border:1px solid var(--accent2);color:var(--accent2);
}

/* spine timeline */
.tl-spine{
  position:relative;
  padding:1.5rem 0 2.5rem;
}
.tl-spine::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;bottom:0;
  width:3px;
  margin-left:-1.5px;
  background:linear-gradient(180deg,transparent,var(--spine) 8%,var(--spine) 92%,transparent);
  border-radius:2px;
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:2.2rem;
  align-items:center;
  margin:0 0 2.4rem;
  padding:0 .5rem;
}
.tl-item::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:14px;height:14px;
  margin:-7px 0 0 -7px;
  border-radius:50%;
  background:var(--dot);
  border:3px solid var(--soft);
  box-shadow:0 0 0 2px var(--spine);
  z-index:2;
}
.tl-item .tl-media,
.tl-item .tl-copy{min-width:0}
.tl-item.flip .tl-media{order:2}
.tl-item.flip .tl-copy{order:1;text-align:right}
.tl-item.flip .tl-copy .tl-meta{justify-content:flex-end}
.tl-media figure{
  margin:0;background:var(--soft);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  box-shadow:0 8px 24px rgba(30,58,69,.08);
}
.tl-media img{width:100%;aspect-ratio:16/10;object-fit: contain}
.tl-media figcaption{
  padding:.65rem .85rem;font-size:.88rem;color:var(--muted);
  border-top:1px solid var(--line);background:#eef6f7;
}
.tl-copy h2{
  margin:.35rem 0 .7rem;font-size:1.28rem;line-height:1.35;color:var(--band);
}
.tl-copy p{margin:0 0 .75rem;color:var(--ink)}
.tl-meta{
  display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:.45rem;
}
.tl-meta span{
  font-size:.75rem;padding:.15rem .55rem;border-radius:6px;
  background:rgba(26,138,138,.12);color:var(--accent2);font-weight:600;
}
.tl-prose{
  background:var(--soft);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:1.35rem 1.4rem 1.5rem;
  margin:0 0 1.75rem;
}
.tl-prose h2{
  margin:1.4rem 0 .7rem;font-size:1.22rem;color:var(--band);
}
.tl-prose h2:first-child{margin-top:0}
.tl-prose p{margin:0 0 .85rem}
.tl-prose .muted{color:var(--muted)}
.peer-links{
  display:flex;flex-wrap:wrap;gap:.7rem;margin:1rem 0 1.4rem;
}
.peer-links a{
  display:inline-block;padding:.45rem .9rem;
  border:1px solid var(--line);border-radius:8px;
  background:#eef6f7;color:var(--accent2);font-weight:600;
}
.faq details{
  border:1px solid var(--line);border-radius:8px;
  background:#fff;margin:0 0 .65rem;padding:.55rem .9rem;
}
.faq summary{cursor:pointer;font-weight:600;color:var(--band)}
.faq details p{margin:.55rem 0 .2rem;color:var(--muted)}

/* secondary pages */
.page-hero{padding:1.6rem 0 1rem}
.page-hero h1{margin:0 0 .5rem;font-size:1.7rem;color:var(--band)}
.prose{
  background:var(--soft);border:1px solid var(--line);
  border-radius:var(--radius);padding:1.3rem 1.35rem 1.6rem;margin-bottom:2rem;
}
.prose h2{margin:1.3rem 0 .6rem;font-size:1.15rem;color:var(--band)}
.prose p{margin:0 0 .8rem}
.err-box{text-align:center;padding:2.5rem 1rem 3rem}
.err-box h1{font-size:1.8rem;color:var(--band)}

/* footer */
.site-footer{
  margin-top:1rem;padding:1.8rem 0 2rem;
  background:var(--band);color:rgba(255,255,255,.86);
}
.site-footer a{color:#9fd8d4}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:1.4rem;
}
.site-footer h3{margin:0 0 .55rem;color:#fff;font-size:1rem}
.site-footer p,.site-footer ul{margin:0;padding:0;list-style:none;font-size:.92rem}
.site-footer li{margin:.28rem 0}

@media (max-width:860px){
  .nav-desktop{display:none}
  .menu-toggle{display:inline-block}
  .tl-spine::before{left:18px;margin-left:0}
  .tl-item{
    grid-template-columns:1fr;
    gap:0.85rem;
    padding-left:2.4rem;
    margin-bottom:1.8rem;
  }
  .tl-item::after{left:18px;top:1.2rem;margin-left:-7px}
  .tl-item.flip .tl-media,.tl-item.flip .tl-copy{order:unset;text-align:left}
  .tl-item.flip .tl-copy .tl-meta{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:1.1rem}
}

/* SEO keyword highlight */
strong.kw, .kw{color:var(--accent,#c45c26);font-weight:700}
mark.kw{background:rgba(196,92,38,.12);color:inherit;padding:0 .15em;border-radius:3px}

/* --- full image display (no crop) --- */
/* Content screenshots: show full image, no crop */
main img:not(#ads img):not(.brand img),
.bento-tile img,
.bento-tiles img,
.bento-grid img,
.bento-tile-tall img,
.bento-mosaic img,
.bento-pair img,
.bento-hot img,
figure img,
.cine-frame img,
.cine-frame .cine-shot,
.cine-shot,
.tl-item img,
.tl-media img,
.folio-reader img,
.folio-figure img,
.console-panels img,
.zig-section img,
.cascade-hero img,
.shot-row img,
.shot-card img,
.shot-grid img,
.shot img,
.featured img,
.mag-shot img,
.rail-main img,
.band-media img,
.sidebar-main img,
.mod-card img,
.stack-figure img,
.stack-fig img,
.split-hero img,
.split-media img,
.split-visual img,
.compare-card img,
.prose img {
  position: static !important;
  inset: auto !important;
  width: 100% !important;
  max-width: 100% !important;
  height: auto !important;
  min-height: 0 !important;
  max-height: none !important;
  aspect-ratio: auto !important;
  object-fit: contain !important;
  object-position: center top !important;
  display: block;
  background: #f0f0f0;
}
.cine-frame,
.split-visual,
.bento-tile-tall,
.bento-tile,
.bento-tiles figure,
.tl-media,
.tl-item figure,
.folio-figure,
.shot-row figure,
.shot-card,
.shot-grid figure,
.featured figure,
.zig-section figure,
.console-panels figure,
.folio-reader figure,
.band-media,
.split-media,
.stack-figure,
.stack-fig,
.mod-card,
.compare-card {
  overflow: visible !important;
  min-height: 0 !important;
  height: auto !important;
}
.cine-frame {
  display: block !important;
  position: relative !important;
}
.cine-frame::after,
.split-visual::after {
  display: none !important; /* gradient overlay was hiding lower part of screenshots */
}
.cine-band {
  position: relative !important;
  background: rgba(8, 9, 13, 0.92);
}
/* keep ad icons + logo square */
#ads img {
  width: 65px !important;
  height: 65px !important;
  max-width: 65px !important;
  max-height: 65px !important;
  object-fit: cover !important;
  aspect-ratio: 1 / 1 !important;
  position: static !important;
}
.brand img {
  width: 36px !important;
  height: 36px !important;
  object-fit: cover !important;
  aspect-ratio: 1 / 1 !important;
  min-height: 0 !important;
}
/* --- end full image display --- */