:root{
  --ink:#071316;
  --deep:#0b1c21;
  --panel:#102830;
  --teal:#1aa896;
  --cyan:#3ad1c0;
  --mist:#9fc0c8;
  --fog:#d7ecef;
  --line:rgba(58,209,192,.28);
  --warn:#c9a24a;
  --font:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --display:"Bahnschrift","DIN Alternate","Segoe UI Semibold","PingFang SC",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--fog);font-family:var(--font);line-height:1.65;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%,rgba(26,168,150,.18),transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 0%,rgba(58,209,192,.08),transparent 50%),
    linear-gradient(180deg,#061012 0%,var(--ink) 40%,#0a171b 100%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:min(1120px,92%);margin:0 auto}
.city-top{
  position:sticky;top:0;z-index:40;
  backdrop-filter:blur(14px);
  background:rgba(7,19,22,.82);
  border-bottom:1px solid var(--line);
}
.city-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem 0}
.brand{display:flex;align-items:center;gap:.7rem}
.brand-mark{
  width:2.2rem;height:2.2rem;display:grid;place-items:center;
  border:1px solid var(--cyan);color:var(--cyan);
  clip-path:polygon(20% 0,100% 0,80% 100%,0 100%);
  font-family:var(--display);font-weight:700;letter-spacing:.04em;
}
.brand b{display:block;font-family:var(--display);font-size:1.05rem;letter-spacing:.08em}
.brand small{display:block;color:var(--mist);font-size:.68rem;letter-spacing:.18em}
.nav{display:flex;flex-wrap:wrap;gap:.35rem .9rem;font-size:.92rem;color:var(--mist)}
.nav a:hover,.nav a.on{color:var(--cyan)}
.nav-cta{
  padding:.45rem .95rem;border:1px solid var(--teal);color:var(--cyan);
  background:linear-gradient(135deg,rgba(26,168,150,.2),rgba(26,168,150,.05));
  white-space:nowrap;
}
.city-rail{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border-bottom:1px solid var(--line);
}
.city-rail span{
  background:rgba(16,40,48,.92);padding:.45rem .8rem;text-align:center;
  font-size:.72rem;letter-spacing:.14em;color:var(--mist);text-transform:uppercase;
}
.city-rail strong{color:var(--cyan);font-weight:600}

/* Hero — civic command strip + skyline */
.hero-civic{
  position:relative;overflow:hidden;
  padding:3.2rem 0 2.4rem;
  border-bottom:1px solid var(--line);
}
.hero-civic::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,transparent 0 8%,rgba(58,209,192,.06) 8% 8.2%,transparent 8.2% 24%,rgba(58,209,192,.05) 24% 24.2%,transparent 24.2%),
    repeating-linear-gradient(0deg,transparent,transparent 47px,rgba(58,209,192,.05) 48px);
  pointer-events:none;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:2.2rem;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;margin:0 0 .9rem;
  color:var(--cyan);font-size:.78rem;letter-spacing:.2em;
}
.eyebrow::before{content:"";width:1.6rem;height:1px;background:var(--cyan)}
.hero-civic h1{
  margin:0 0 .85rem;font-family:var(--display);font-weight:650;
  font-size:clamp(1.9rem,4.2vw,3rem);line-height:1.18;letter-spacing:.04em;color:#fff;
}
.hero-lead{margin:0 0 1.4rem;color:var(--mist);max-width:34rem;font-size:1.02rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-bottom:1.1rem}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.4rem;
  min-width:9.5rem;padding:.78rem 1.2rem;
  font-family:var(--display);font-size:.95rem;letter-spacing:.06em;
  white-space:nowrap;word-break:keep-all;writing-mode:horizontal-tb;
  border:1px solid transparent;cursor:pointer;
}
.btn-primary{background:linear-gradient(135deg,var(--teal),#148a7b);color:#041214;border-color:#2bd0bd}
.btn-ghost{background:transparent;color:var(--fog);border-color:var(--line)}
.btn:hover{filter:brightness(1.08)}
.sys-req{
  display:grid;grid-template-columns:1fr 1fr;gap:.55rem;
  padding:.85rem;border:1px solid var(--line);background:rgba(16,40,48,.55);
}
.sys-req p{margin:0;font-size:.82rem;color:var(--mist)}
.sys-req b{color:var(--fog)}
.hero-media{align-self:center}
.hero-media .media-frame{
  align-self:center;margin:0;padding:0;overflow:visible;
  border:1px solid var(--line);background:rgba(7,19,22,.6);
  box-shadow:0 0 0 1px rgba(58,209,192,.08),0 24px 60px rgba(0,0,0,.35);
}
.hero-media img{
  display:block;width:100%;height:auto;object-fit:contain;object-position:center;
  margin:0;padding:0;min-height:0;max-height:none;clip-path:none;transform:none;
}
.link-nodes{
  display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem;
}
.link-nodes i{
  font-style:normal;font-size:.75rem;letter-spacing:.08em;color:var(--mist);
  padding:.28rem .55rem;border:1px dashed rgba(58,209,192,.35);
}

/* Section shells */
.sec{padding:3.4rem 0;border-bottom:1px solid rgba(58,209,192,.12)}
.sec-head{margin-bottom:1.6rem;max-width:40rem}
.sec-head .kicker{margin:0 0 .4rem;color:var(--cyan);font-size:.78rem;letter-spacing:.22em}
.sec-head h2{
  margin:0 0 .55rem;font-family:var(--display);font-size:clamp(1.45rem,2.6vw,2rem);
  letter-spacing:.05em;color:#fff;font-weight:650;
}
.sec-head p{margin:0;color:var(--mist)}

/* Download towers */
.tower-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.tower{
  display:flex;flex-direction:column;min-height:100%;
  background:linear-gradient(180deg,rgba(16,40,48,.95),rgba(11,28,33,.88));
  border:1px solid var(--line);border-top:3px solid var(--teal);
  padding:1.15rem 1rem 1.05rem;
}
.tower .os{margin:0 0 .35rem;font-family:var(--display);color:var(--cyan);letter-spacing:.1em;font-size:.95rem}
.tower .meta{margin:0 0 .2rem;color:var(--mist);font-size:.86rem}
.tower .meta b{color:var(--fog);font-weight:600}
.tower .btn{margin-top:auto;width:100%;margin-top:1rem}

/* Feature metro matrix */
.metro{
  display:grid;grid-template-columns:repeat(5,1fr);gap:0;
  border:1px solid var(--line);background:var(--line);
}
.metro article{
  background:var(--deep);padding:1.2rem 1rem 1.35rem;min-height:11rem;
}
.metro .ico{
  width:2.1rem;height:2.1rem;margin-bottom:.75rem;
  display:grid;place-items:center;border:1px solid var(--line);color:var(--cyan);
  font-family:var(--display);font-size:.85rem;
}
.metro h3{margin:0 0 .4rem;font-size:1rem;color:#fff;font-family:var(--display);letter-spacing:.04em}
.metro p{margin:0;font-size:.88rem;color:var(--mist)}

/* Dual linkage solution */
.linkage{
  display:grid;grid-template-columns:1fr 1.05fr;gap:1.5rem;align-items:stretch;
}
.linkage-copy{
  padding:1.4rem 1.3rem;border:1px solid var(--line);
  background:
    linear-gradient(135deg,rgba(26,168,150,.12),transparent 45%),
    rgba(16,40,48,.7);
}
.linkage-copy h2{margin:0 0 .7rem;font-family:var(--display);font-size:1.55rem;color:#fff;letter-spacing:.04em}
.linkage-copy p{margin:0 0 .85rem;color:var(--mist)}
.axis{
  display:grid;grid-template-columns:1fr auto 1fr;gap:.55rem;align-items:center;margin-top:1.1rem;
}
.axis .side{
  padding:.7rem .75rem;border:1px solid var(--line);background:rgba(7,19,22,.55);
  font-size:.86rem;color:var(--mist);
}
.axis .side b{display:block;color:var(--cyan);margin-bottom:.25rem;font-family:var(--display);letter-spacing:.08em}
.axis .hub{
  width:2.4rem;height:2.4rem;border-radius:50%;border:1px solid var(--cyan);
  display:grid;place-items:center;color:var(--cyan);font-size:.7rem;letter-spacing:.04em;
  background:rgba(26,168,150,.15);
}
.product-shots{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}
.product-shots figure{margin:0;border:1px solid var(--line);background:#071316}
.product-shots img{width:100%;height:auto;object-fit:contain;object-position:center}

/* Trust skyline */
.trust-band{
  padding:2.4rem 0;border-bottom:1px solid rgba(58,209,192,.12);
  background:linear-gradient(180deg,rgba(16,40,48,.55),transparent);
}
.trust-band .stat{
  text-align:center;margin-bottom:1.4rem;
}
.trust-band .stat strong{
  display:block;font-family:var(--display);font-size:clamp(1.8rem,3.5vw,2.6rem);
  color:var(--cyan);letter-spacing:.06em;
}
.trust-band .stat span{color:var(--mist);font-size:.95rem}
.brands{
  display:flex;flex-wrap:wrap;justify-content:center;gap:.65rem;
}
.brands span{
  padding:.55rem 1rem;border:1px solid var(--line);background:rgba(7,19,22,.5);
  font-family:var(--display);letter-spacing:.12em;font-size:.88rem;color:var(--fog);
}

/* News + help */
.bulletin{display:grid;grid-template-columns:1.1fr .9fr;gap:1.2rem}
.bulletin .panel{
  border:1px solid var(--line);background:rgba(16,40,48,.65);padding:1.2rem 1.15rem;
}
.bulletin h2{margin:0 0 1rem;font-family:var(--display);font-size:1.25rem;color:#fff;letter-spacing:.05em}
.news-list{list-style:none;margin:0;padding:0;display:grid;gap:.75rem}
.news-list li{display:grid;grid-template-columns:auto 1fr;gap:.75rem;align-items:start;padding-bottom:.75rem;border-bottom:1px dashed rgba(58,209,192,.2)}
.news-list time{font-size:.75rem;color:var(--cyan);letter-spacing:.08em;white-space:nowrap}
.news-list a{color:var(--fog)}.news-list a:hover{color:var(--cyan)}
.news-list p{margin:.2rem 0 0;font-size:.86rem;color:var(--mist)}
.faq details{
  border-bottom:1px solid rgba(58,209,192,.18);padding:.65rem 0;
}
.faq summary{cursor:pointer;color:#fff;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+ ";color:var(--cyan)}
.faq details[open] summary::before{content:"− "}
.faq p{margin:.45rem 0 0;color:var(--mist);font-size:.9rem}
.gallery-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:.7rem;margin-top:1.2rem}
.gallery-row figure{margin:0;border:1px solid var(--line)}
.gallery-row img{width:100%;height:auto;object-fit:contain}

/* Bottom CTA */
.cta-command{
  padding:3rem 0 3.4rem;
  background:
    radial-gradient(ellipse 70% 80% at 50% 100%,rgba(26,168,150,.2),transparent 60%),
    rgba(11,28,33,.9);
  border-top:1px solid var(--line);
}
.cta-box{text-align:center;max-width:42rem;margin:0 auto}
.cta-box h2{margin:0 0 .7rem;font-family:var(--display);font-size:clamp(1.4rem,2.8vw,2rem);color:#fff;letter-spacing:.05em}
.cta-box > p{margin:0 0 1.2rem;color:var(--mist)}
.benefits{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem;margin:1.1rem 0 0;padding:0;list-style:none}
.benefits li{
  padding:.4rem .75rem;border:1px solid var(--line);font-size:.84rem;color:var(--mist);
}

.site-foot{
  padding:1.4rem 0 1.8rem;border-top:1px solid var(--line);color:var(--mist);font-size:.86rem;
}
.foot-row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.8rem;align-items:center}
.foot-links{display:flex;gap:1rem}
.foot-links a:hover{color:var(--cyan)}

@media (max-width:960px){
  .hero-grid,.linkage,.bulletin,.tower-grid{grid-template-columns:1fr 1fr}
  .metro{grid-template-columns:1fr 1fr}
  .city-rail{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .hero-grid,.linkage,.bulletin,.tower-grid,.metro,.product-shots,.gallery-row,.sys-req,.city-rail{grid-template-columns:1fr}
  .nav{display:none}
  .axis{grid-template-columns:1fr}
  .hero-actions .btn{flex:1 1 100%}
}

/* Hero image lock — end of stylesheet for priority */
.hero-civic .hero-grid{align-items:center}
.hero-civic .hero-media{align-self:center;margin:0;padding:0}
.hero-civic .hero-media .media-frame{align-self:center;margin:0;padding:0;overflow:visible}
.hero-civic .hero-media img{
  display:block;width:100%;height:auto;object-fit:contain;object-position:center;
  margin:0;padding:0;min-height:0;max-height:none;clip-path:none;transform:none;
}