:root{
  --ink:#12343F;
  --muted:#4F6B74;
  --blue:#1F7EA8;
  --teal:#1FA8A0;
  --mint:#7ED6C5;
  --sky:#E6F6FB;
  --leaf:#E7F7F3;
  --line:#C5E0E6;
  --white:#fff;
  --grad:linear-gradient(135deg,#1F7EA8 0%,#1FA8A0 55%,#4EC4B0 100%);
  --shadow:0 14px 34px rgba(31,126,168,.14);
  --font-display:"Trebuchet MS","Segoe UI","Microsoft YaHei UI",sans-serif;
  --font-body:"Segoe UI","Microsoft YaHei UI","PingFang SC",sans-serif;
  --font-mono:"Cascadia Mono","Consolas",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);font-family:var(--font-body);line-height:1.55;
  background:
    radial-gradient(ellipse 70% 45% at 0% 0%,rgba(126,214,197,.28),transparent 55%),
    radial-gradient(ellipse 55% 40% at 100% 0%,rgba(31,126,168,.18),transparent 50%),
    linear-gradient(180deg,#F4FBFC,#EAF6F4 50%,#E7F2F6);
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
a:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.wrap{width:min(1120px,92%);margin:0 auto}

.campus-top{
  position:sticky;top:0;z-index:40;
  background:rgba(244,251,252,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.campus-top-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem 0}
.logo{display:flex;align-items:center;gap:.6rem}
.logo-mark{
  width:2.2rem;height:2.2rem;border-radius:12px;display:grid;place-items:center;
  background:var(--grad);color:#fff;font-family:var(--font-display);font-weight:700;
  box-shadow:0 8px 18px rgba(31,126,168,.28);
}
.logo b{font-family:var(--font-display);font-size:1.18rem}
.logo small{display:block;font-size:.72rem;color:var(--blue);letter-spacing:.05em}
.nav{display:flex;flex-wrap:wrap;gap:.85rem;font-size:.92rem}
.nav a{color:var(--muted)}
.nav a:hover,.nav a.on{color:var(--blue);font-weight:600}

/* signature: campus wayfinding map */
.map-strip{
  margin-top:.2rem;padding:.65rem 0;overflow-x:auto;
  display:flex;gap:.55rem;align-items:center;
}
.pin{
  flex:0 0 auto;display:flex;align-items:center;gap:.4rem;
  padding:.35rem .7rem;border-radius:999px;background:var(--white);
  border:1px solid var(--line);font-size:.76rem;color:var(--muted);white-space:nowrap;
}
.pin i{
  width:.7rem;height:.7rem;border-radius:50%;background:var(--grad);
  box-shadow:0 0 0 3px rgba(31,168,160,.18);
}
.pin em{font-style:normal;color:var(--blue);font-weight:700;font-family:var(--font-mono);font-size:.7rem}
.dash{width:1.4rem;height:2px;background:linear-gradient(90deg,var(--blue),var(--teal));opacity:.45;flex:0 0 auto}

.hero{padding:1.9rem 0 1.2rem}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:1.4rem;align-items:center}
.eyebrow{
  display:inline-block;margin-bottom:.5rem;padding:.2rem .55rem;border-radius:999px;
  background:rgba(31,126,168,.1);color:var(--blue);font-size:.78rem;
}
.hero h1{
  margin:0 0 .55rem;font-family:var(--font-display);
  font-size:clamp(1.85rem,4vw,2.7rem);line-height:1.15;
}
.hero-lead{margin:0 0 1rem;color:var(--muted);max-width:35rem}
.cta-row{display:flex;flex-wrap:wrap;gap:.65rem;margin-bottom:.9rem}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:9.2rem;padding:.7rem 1.1rem;border-radius:999px;border:1px solid transparent;
  font-family:var(--font-display);font-size:.95rem;
  white-space:nowrap;word-break:keep-all;writing-mode:horizontal-tb;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-pri{background:var(--grad);color:#fff;box-shadow:var(--shadow)}
.btn-sec{background:var(--white);border-color:var(--line);color:var(--ink)}
.btn-sec:hover{border-color:var(--blue);color:var(--blue)}
.btn-light{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.45);color:#fff}
.req{
  display:grid;grid-template-columns:1fr 1fr;gap:.5rem;
  padding:.8rem;border-radius:16px;background:rgba(255,255,255,.75);
  border:1px solid var(--line);font-size:.84rem;color:var(--muted);
}
.req b{display:block;color:var(--teal);font-size:.75rem;margin-bottom:.12rem}
.hero-media{
  align-self:center;margin:0;padding:0;border-radius:22px;overflow:hidden;
  background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);position:relative;
}
.hero-media::before{
  content:"园区看板";position:absolute;left:.85rem;top:.85rem;z-index:1;
  padding:.22rem .55rem;border-radius:999px;background:rgba(255,255,255,.92);
  border:1px solid var(--line);font-size:.72rem;color:var(--blue);
}
.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;
}

section{padding:2.1rem 0}
.sec-h{margin-bottom:1.05rem}
.sec-h h2{margin:0 0 .3rem;font-family:var(--font-display);font-size:clamp(1.3rem,2.5vw,1.75rem)}
.sec-h p{margin:0;color:var(--muted);max-width:42rem}
.chip{font-size:.75rem;color:var(--teal);letter-spacing:.06em;margin-bottom:.25rem}

#download{background:linear-gradient(180deg,transparent,rgba(31,168,160,.05))}
.pads{display:grid;grid-template-columns:repeat(4,1fr);gap:.85rem}
.pad{
  background:var(--white);border:1px solid var(--line);border-radius:18px;
  padding:1rem .9rem;display:flex;flex-direction:column;gap:.55rem;
  box-shadow:0 10px 24px rgba(18,52,63,.05);position:relative;overflow:hidden;
}
.pad::before{
  content:"";position:absolute;inset:0 0 auto 0;height:5px;background:var(--grad);
}
.pad .tag{
  align-self:flex-start;padding:.15rem .5rem;border-radius:999px;
  background:var(--sky);color:var(--blue);font-size:.7rem;
}
.pad h3{margin:0;font-family:var(--font-display);font-size:1.12rem}
.pad img{
  width:100%;height:auto;object-fit:contain;object-position:center;
  margin:0;padding:0;border-radius:12px;border:1px solid var(--line);background:var(--leaf);
}
.pad ul{margin:0;padding:0;list-style:none;font-size:.85rem;color:var(--muted)}
.pad li{display:flex;justify-content:space-between;gap:.4rem;padding:.22rem 0;border-bottom:1px dotted var(--line)}
.pad .btn{width:100%;margin-top:auto;border-radius:12px}

.feats{display:grid;grid-template-columns:repeat(5,1fr);gap:.7rem}
.feat{
  background:var(--white);border:1px solid var(--line);border-radius:16px;padding:.95rem .8rem;
}
.feat .ico{
  width:2.2rem;height:2.2rem;border-radius:12px;margin-bottom:.55rem;
  display:grid;place-items:center;background:var(--grad);color:#fff;
  font-family:var(--font-display);font-size:.8rem;font-weight:700;
}
.feat h3{margin:0 0 .3rem;font-size:.98rem;font-family:var(--font-display)}
.feat p{margin:0;font-size:.84rem;color:var(--muted)}

.solution{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;align-items:center}
.sol-copy{
  background:var(--white);border:1px solid var(--line);border-radius:20px;
  padding:1.25rem 1.15rem;box-shadow:var(--shadow);
}
.sol-copy h2{margin:0 0 .5rem;font-family:var(--font-display);font-size:1.5rem}
.sol-copy p{margin:0 0 .7rem;color:var(--muted)}
.sol-media{display:grid;gap:.65rem}
.sol-media figure{margin:0;padding:0;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#fff}
.sol-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;
}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:.65rem}

.trust{
  text-align:center;padding:1.55rem 1.1rem;border-radius:22px;color:#eefcff;
  background:var(--grad);
}
.trust .big{font-family:var(--font-display);font-size:clamp(1.7rem,3.5vw,2.4rem);margin-bottom:.35rem}
.trust .big span{color:#FFE8A8}
.trust p{margin:.2rem auto 1rem;max-width:34rem;opacity:.93}
.brands{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem}
.brands span{
  padding:.4rem .75rem;border-radius:999px;border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.12);font-family:var(--font-display);font-size:.9rem;
}

.split{display:grid;grid-template-columns:1.1fr .9fr;gap:1rem}
.panel{
  background:var(--white);border:1px solid var(--line);border-radius:18px;
  padding:1.1rem 1rem;box-shadow:0 8px 20px rgba(18,52,63,.04);
}
.panel h2{margin:0 0 .75rem;font-family:var(--font-display);font-size:1.25rem}
.news{list-style:none;margin:0;padding:0}
.news li{padding:.6rem 0;border-bottom:1px solid var(--line)}
.news li:last-child{border-bottom:0}
.news time{display:block;font-size:.72rem;color:var(--teal);margin-bottom:.15rem}
.news a:hover{color:var(--blue)}
.faq details{border:1px solid var(--line);border-radius:12px;padding:.55rem .7rem;margin-bottom:.45rem;background:var(--sky)}
.faq summary{cursor:pointer;font-weight:600}
.faq p{margin:.4rem 0 0;font-size:.9rem;color:var(--muted)}

.cta-band{
  margin-bottom:1.8rem;border-radius:22px;overflow:hidden;color:#fff;
  background:linear-gradient(120deg,rgba(18,52,63,.72),rgba(31,126,168,.65)),url("5.png") center/cover no-repeat;
}
.cta-band .inner{padding:1.6rem 1.25rem}
.cta-band h2{margin:0 0 .4rem;font-family:var(--font-display);font-size:clamp(1.3rem,3vw,1.85rem)}
.cta-band p{margin:0 0 .9rem;max-width:36rem;opacity:.95}
.gains{display:flex;flex-wrap:wrap;gap:.45rem;margin-bottom:.9rem}
.gains span{padding:.3rem .6rem;border-radius:999px;border:1px solid rgba(255,255,255,.4);font-size:.82rem;background:rgba(0,0,0,.15)}

.foot{border-top:1px solid var(--line);padding:1.1rem 0 1.5rem;font-size:.86rem;color:var(--muted)}
.foot-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.7rem}
.foot nav{display:flex;gap:.8rem}
.foot a:hover{color:var(--blue)}

.page-hero{padding:1.5rem 0 1rem;border-bottom:1px dashed var(--line)}
.page-hero h1{margin:0 0 .35rem;font-family:var(--font-display);font-size:clamp(1.45rem,3vw,2rem)}
.page-hero p{margin:0;color:var(--muted);max-width:40rem}
.help-grid{display:grid;grid-template-columns:1fr 1fr;gap:.8rem}
.help-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:1rem}
.help-card h3{margin:0 0 .35rem;font-family:var(--font-display)}
.help-card p{margin:0;font-size:.9rem;color:var(--muted)}

@media (max-width:960px){
  .hero-grid,.solution,.split{grid-template-columns:1fr}
  .pads{grid-template-columns:1fr 1fr}
  .feats{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:640px){
  .nav{display:none}
  .pads,.feats,.help-grid,.pair,.req{grid-template-columns:1fr}
  .cta-row .btn{flex:1 1 100%}
}
.hero-grid{align-items:center}
.hero-media{align-self:center;height:auto;padding:0;margin:0;overflow:visible}
.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;
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn:hover{transform:none}
}