:root{
  --bg:#eaf5f2;
  --paper:#f7fbfa;
  --ink:#163532;
  --mute:#5f7a76;
  --line:#c5ddd7;
  --teal:#2a9b8c;
  --teal-deep:#1e7a6e;
  --soft:#d7eee9;
  --warn:#b9893a;
  --font:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"Cascadia Mono","Consolas","Sarasa Mono SC",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);font-family:var(--font);line-height:1.65;
  background:
    linear-gradient(180deg,#f3faf8 0%,var(--bg) 28%,#e4f2ee 100%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:min(1100px,92%);margin:0 auto}

.sc-top{
  position:sticky;top:0;z-index:30;
  background:rgba(247,251,250,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.sc-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.8rem 0}
.logo{display:flex;align-items:center;gap:.65rem}
.logo-box{
  width:2rem;height:2rem;display:grid;place-items:center;
  background:var(--teal);color:#fff;font-weight:700;font-size:.95rem;
  border-radius:4px;
}
.logo b{display:block;font-size:1.05rem;letter-spacing:.04em}
.logo small{display:block;font-family:var(--mono);font-size:.62rem;color:var(--mute);letter-spacing:.12em}
.nav{display:flex;flex-wrap:wrap;gap:.3rem 1rem;color:var(--mute);font-size:.92rem}
.nav a:hover,.nav a.on{color:var(--teal-deep)}
.nav-dl{
  padding:.42rem .9rem;background:var(--teal);color:#fff;border-radius:4px;
  white-space:nowrap;font-size:.9rem;
}
.lane-bar{
  display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;color:var(--mute);
}
.lane-bar span{
  flex:1 1 8rem;padding:.4rem .7rem;border-right:1px solid var(--line);
  background:var(--paper);
}
.lane-bar span:last-child{border-right:0}
.lane-bar em{font-style:normal;color:var(--teal-deep);font-weight:600}

/* Hero — supply intake strip */
.hero-sc{
  padding:2.8rem 0 2.2rem;border-bottom:1px solid var(--line);
}
.hero-sc .hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:2rem;align-items:center;
}
.tag{
  display:inline-block;margin:0 0 .75rem;padding:.2rem .55rem;
  background:var(--soft);color:var(--teal-deep);font-family:var(--mono);
  font-size:.72rem;letter-spacing:.08em;border-radius:3px;
}
.hero-sc h1{
  margin:0 0 .7rem;font-size:clamp(1.85rem,3.8vw,2.7rem);
  line-height:1.2;font-weight:700;letter-spacing:.02em;color:var(--ink);
}
.lead{margin:0 0 1.25rem;color:var(--mute);max-width:34rem;font-size:1.02rem}
.actions{display:flex;flex-wrap:wrap;gap:.65rem;margin-bottom:1rem}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:9.2rem;padding:.72rem 1.15rem;border-radius:4px;
  font-size:.94rem;border:1px solid transparent;cursor:pointer;
  white-space:nowrap;word-break:keep-all;writing-mode:horizontal-tb;
}
.btn-fill{background:var(--teal);color:#fff;border-color:var(--teal-deep)}
.btn-line{background:var(--paper);color:var(--ink);border-color:var(--line)}
.btn:hover{filter:brightness(.97)}
.req{
  display:grid;grid-template-columns:1fr 1fr;gap:.5rem;
  padding:.75rem;background:var(--paper);border:1px solid var(--line);border-radius:4px;
}
.req p{margin:0;font-size:.84rem;color:var(--mute)}
.req b{color:var(--ink)}
.hero-media{align-self:center}
.media-shell{
  align-self:center;margin:0;padding:0;overflow:visible;
  border:1px solid var(--line);border-radius:6px;background:#fff;
  box-shadow:0 12px 32px rgba(22,53,50,.06);
}
.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;
}

.flow-strip{
  display:flex;flex-wrap:wrap;align-items:center;gap:.35rem .55rem;
  margin-top:1rem;font-family:var(--mono);font-size:.72rem;color:var(--mute);
}
.flow-strip i{
  font-style:normal;padding:.25rem .5rem;background:var(--soft);
  color:var(--teal-deep);border-radius:3px;
}
.flow-strip b{font-weight:500;color:var(--line)}

.sec{padding:3.1rem 0;border-bottom:1px solid var(--line)}
.sec-h{margin-bottom:1.4rem;max-width:38rem}
.sec-h .mono{margin:0 0 .35rem;font-family:var(--mono);font-size:.72rem;color:var(--teal);letter-spacing:.1em}
.sec-h h2{margin:0 0 .45rem;font-size:clamp(1.35rem,2.4vw,1.85rem);letter-spacing:.02em}
.sec-h p{margin:0;color:var(--mute)}

/* SKU download cards */
.sku-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:.85rem}
.sku{
  display:flex;flex-direction:column;background:var(--paper);
  border:1px solid var(--line);border-radius:6px;padding:1.05rem .95rem;
}
.sku .os{margin:0 0 .5rem;font-weight:700;font-size:1.05rem}
.sku .row{margin:0 0 .2rem;font-size:.86rem;color:var(--mute)}
.sku .row b{color:var(--ink);font-family:var(--mono);font-weight:600}
.sku .btn{margin-top:auto;width:100%;margin-top:.95rem}

/* Feature stations */
.stations{
  display:grid;grid-template-columns:repeat(5,1fr);gap:.7rem;
}
.station{
  background:var(--paper);border:1px solid var(--line);border-radius:6px;
  padding:1.05rem .9rem;position:relative;
}
.station::after{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--soft);
  border-radius:6px 6px 0 0;
}
.station:hover::after{background:var(--teal)}
.station .ic{
  width:2rem;height:2rem;margin-bottom:.65rem;border-radius:4px;
  display:grid;place-items:center;background:var(--soft);color:var(--teal-deep);
  font-family:var(--mono);font-size:.75rem;font-weight:700;
}
.station h3{margin:0 0 .35rem;font-size:.98rem}
.station p{margin:0;font-size:.86rem;color:var(--mute)}

/* Solution bilateral */
.bilateral{
  display:grid;grid-template-columns:.95fr 1.05fr;gap:1.3rem;align-items:start;
}
.bilateral-copy{
  background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:1.35rem 1.25rem;
}
.bilateral-copy h2{margin:0 0 .65rem;font-size:1.45rem}
.bilateral-copy p{margin:0 0 .8rem;color:var(--mute)}
.chain-steps{
  display:grid;gap:.45rem;margin-top:1rem;
}
.chain-steps div{
  display:grid;grid-template-columns:auto 1fr;gap:.65rem;align-items:center;
  padding:.55rem .65rem;background:var(--bg);border-radius:4px;font-size:.88rem;color:var(--mute);
}
.chain-steps code{
  font-family:var(--mono);font-size:.72rem;color:var(--teal-deep);
  background:var(--soft);padding:.15rem .4rem;border-radius:3px;
}
.shots{display:grid;grid-template-columns:1fr 1fr;gap:.65rem}
.shots figure{margin:0;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#fff}
.shots img{width:100%;height:auto;object-fit:contain;object-position:center}

.trust{
  padding:2.2rem 0;border-bottom:1px solid var(--line);text-align:center;
  background:linear-gradient(180deg,rgba(215,238,233,.55),transparent);
}
.trust strong{
  display:block;font-size:clamp(1.7rem,3.2vw,2.4rem);color:var(--teal-deep);
  letter-spacing:.02em;margin-bottom:.25rem;
}
.trust .sub{color:var(--mute);margin-bottom:1.1rem}
.brands{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem}
.brands span{
  padding:.45rem .9rem;background:var(--paper);border:1px solid var(--line);
  border-radius:4px;font-size:.88rem;color:var(--ink);
}

.split{display:grid;grid-template-columns:1.1fr .9fr;gap:1rem}
.panel{
  background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:1.15rem 1.1rem;
}
.panel h2{margin:0 0 .9rem;font-size:1.2rem}
.news{list-style:none;margin:0;padding:0;display:grid;gap:.7rem}
.news li{padding-bottom:.7rem;border-bottom:1px dashed var(--line)}
.news time{display:block;font-family:var(--mono);font-size:.72rem;color:var(--teal);margin-bottom:.2rem}
.news a{font-weight:600}.news a:hover{color:var(--teal-deep)}
.news p{margin:.25rem 0 0;font-size:.86rem;color:var(--mute)}
.faq details{border-bottom:1px solid var(--line);padding:.55rem 0}
.faq summary{cursor:pointer;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+ ";color:var(--teal)}
.faq details[open] summary::before{content:"− "}
.faq p{margin:.4rem 0 0;color:var(--mute);font-size:.9rem}
.thumbs{display:grid;grid-template-columns:1fr 1fr 1fr;gap:.55rem;margin-top:1rem}
.thumbs figure{margin:0;border:1px solid var(--line);border-radius:4px;overflow:hidden}
.thumbs img{width:100%;height:auto;object-fit:contain}

.cta-sc{
  padding:2.8rem 0 3.2rem;border-bottom:1px solid var(--line);
  background:var(--soft);
}
.cta-box{text-align:center;max-width:40rem;margin:0 auto}
.cta-box h2{margin:0 0 .55rem;font-size:clamp(1.35rem,2.6vw,1.9rem)}
.cta-box > p{margin:0 0 1.1rem;color:var(--mute)}
.gains{list-style:none;margin:1rem 0 0;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:.45rem}
.gains li{
  padding:.35rem .7rem;background:var(--paper);border:1px solid var(--line);
  border-radius:4px;font-size:.84rem;color:var(--mute);
}

.foot{
  padding:1.3rem 0 1.7rem;color:var(--mute);font-size:.86rem;
}
.foot-row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.7rem;align-items:center}
.foot-links{display:flex;gap:1rem}
.foot-links a:hover{color:var(--teal-deep)}

@media (max-width:960px){
  .hero-sc .hero-grid,.bilateral,.split,.sku-grid{grid-template-columns:1fr 1fr}
  .stations{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .hero-sc .hero-grid,.bilateral,.split,.sku-grid,.stations,.shots,.thumbs,.req{grid-template-columns:1fr}
  .nav{display:none}
  .actions .btn{flex:1 1 100%}
}

.hero-sc .hero-grid{align-items:center}
.hero-sc .hero-media{align-self:center;margin:0;padding:0}
.hero-sc .media-shell{align-self:center;margin:0;padding:0;overflow:visible}
.hero-sc .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;
}