:root{
  --clr-primary:#1f4e3d;
  --clr-primary-dark:#153a2d;
  --clr-primary-light:#2f6b54;
  --clr-accent:#e6b34d;
  --clr-accent-soft:#f2d18a;
  --clr-bg:#f4f7f5;
  --clr-surface:#ffffff;
  --clr-surface-2:#eef3ef;
  --clr-text:#1c2b25;
  --clr-text-soft:#4a5c54;
  --clr-muted:#7a8a82;
  --clr-border:rgba(31,78,61,.12);
  --clr-glass:rgba(255,255,255,.55);
  --clr-glass-border:rgba(255,255,255,.65);
  --shadow-sm:0 2px 8px rgba(21,58,45,.06);
  --shadow-md:0 10px 30px rgba(21,58,45,.10);
  --shadow-lg:0 20px 50px rgba(21,58,45,.16);
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --space-1:.25rem;
  --space-2:.5rem;
  --space-3:.75rem;
  --space-4:1rem;
  --space-5:1.5rem;
  --space-6:2rem;
  --space-7:3rem;
  --space-8:4.5rem;
  --maxw:1180px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.45s;
}

@media (prefers-color-scheme: dark){
  :root{
    --clr-primary:#3f8f6e;
    --clr-primary-dark:#1f4e3d;
    --clr-primary-light:#57a985;
    --clr-accent:#f0c264;
    --clr-accent-soft:#8a6f36;
    --clr-bg:#0e1613;
    --clr-surface:#16211c;
    --clr-surface-2:#1b2a24;
    --clr-text:#e8f0ec;
    --clr-text-soft:#b9c9c1;
    --clr-muted:#8ba096;
    --clr-border:rgba(120,190,160,.18);
    --clr-glass:rgba(22,33,28,.55);
    --clr-glass-border:rgba(120,190,160,.22);
    --shadow-sm:0 2px 8px rgba(0,0,0,.35);
    --shadow-md:0 10px 30px rgba(0,0,0,.45);
    --shadow-lg:0 20px 50px rgba(0,0,0,.55);
  }
}

*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:90px;
}

body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--clr-text);
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(230,179,77,.10), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(47,107,84,.12), transparent 55%),
    var(--clr-bg);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

img,svg{max-width:100%;height:auto;display:block}

a{
  color:var(--clr-primary-light);
  text-decoration:none;
  transition:color .25s var(--ease);
}
a:hover,a:focus-visible{color:var(--clr-accent)}
a:focus-visible{outline:2px solid var(--clr-accent);outline-offset:3px;border-radius:4px}

h1,h2,h3,h4{
  margin:0 0 var(--space-3);
  line-height:1.3;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--clr-text);
}

h1{
  font-size:clamp(1.6rem,1.15rem + 2.2vw,2.6rem);
  line-height:1.25;
}

h2{
  font-size:clamp(1.35rem,1.05rem + 1.3vw,1.9rem);
  position:relative;
  padding-bottom:var(--space-3);
}
h2::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:64px;height:4px;
  border-radius:var(--radius-pill);
  background:linear-gradient(90deg,var(--clr-primary),var(--clr-accent));
}

h3{
  font-size:clamp(1.08rem,1rem + .4vw,1.28rem);
  color:var(--clr-primary-light);
}

p{margin:0 0 var(--space-4);color:var(--clr-text-soft)}

ul,ol{margin:0 0 var(--space-4);padding-left:1.25rem}

li{margin-bottom:var(--space-2)}

strong{color:var(--clr-text)}

::selection{background:var(--clr-accent-soft);color:var(--clr-primary-dark)}

/* ---------- Header ---------- */
header{
  position:sticky;
  top:0;
  z-index:100;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:var(--space-4);
  padding:var(--space-3) clamp(1rem,4vw,2.5rem);
  background:var(--clr-glass);
  -webkit-backdrop-filter:saturate(180%) blur(18px);
  backdrop-filter:saturate(180%) blur(18px);
  border-bottom:1px solid var(--clr-glass-border);
  box-shadow:var(--shadow-sm);
}

.brand{
  display:flex;
  align-items:center;
  gap:var(--space-3);
  font-weight:700;
  font-size:clamp(.95rem,.85rem + .4vw,1.1rem);
  color:var(--clr-text);
  letter-spacing:.01em;
}
.brand svg{
  flex:0 0 auto;
  border-radius:10px;
  box-shadow:0 6px 18px rgba(31,78,61,.28);
  transition:transform .5s var(--ease);
}
.brand:hover svg{transform:rotate(-6deg) scale(1.06)}
.brand span{background:linear-gradient(90deg,var(--clr-primary),var(--clr-accent));-webkit-background-clip:text;background-clip:text;color:transparent}

header nav{flex:1 1 auto;min-width:0}
header nav ul{
  display:flex;
  flex-wrap:wrap;
  gap:var(--space-1);
  margin:0;
  padding:0;
  list-style:none;
  justify-content:flex-end;
}
header nav li{margin:0}
header nav a{
  display:inline-block;
  padding:.45rem .8rem;
  font-size:.9rem;
  font-weight:500;
  color:var(--clr-text-soft);
  border-radius:var(--radius-pill);
  transition:color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease);
}
header nav a:hover,
header nav a:focus-visible{
  color:var(--clr-primary-dark);
  background:rgba(230,179,77,.28);
  transform:translateY(-2px);
}
@media (prefers-color-scheme: dark){
  header nav a:hover,
  header nav a:focus-visible{color:#0e1613;background:var(--clr-accent)}
}

/* ---------- Main layout ---------- */
main{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:var(--space-5) clamp(1rem,4vw,2.5rem) var(--space-8);
}

section{
  margin-bottom:var(--space-7);
  padding:clamp(1.25rem,3vw,2.25rem);
  background:var(--clr-surface);
  border:1px solid var(--clr-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  transition:box-shadow .4s var(--ease),transform .4s var(--ease),border-color .4s var(--ease);
  animation:rise .7s var(--ease) both;
}
section:hover{
  box-shadow:var(--shadow-md);
  border-color:rgba(230,179,77,.35);
}

@keyframes rise{
  from{opacity:0;transform:translateY(22px)}
  to{opacity:1;transform:translateY(0)}
}

/* stagger for scroll feel */
main > section:nth-of-type(1){animation-delay:.05s}
main > section:nth-of-type(2){animation-delay:.1s}
main > section:nth-of-type(3){animation-delay:.15s}
main > section:nth-of-type(4){animation-delay:.2s}
main > section:nth-of-type(5){animation-delay:.25s}
main > section:nth-of-type(6){animation-delay:.3s}
main > section:nth-of-type(7){animation-delay:.35s}
main > section:nth-of-type(8){animation-delay:.4s}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* ---------- Breadcrumb ---------- */
main > nav[aria-label="面包屑导航"]{
  margin-bottom:var(--space-5);
}
main > nav[aria-label="面包屑导航"] ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:var(--space-2);
  margin:0;
  padding:0;
  list-style:none;
  font-size:.85rem;
  color:var(--clr-muted);
}
main > nav[aria-label="面包屑导航"] li{
  margin:0;
  display:flex;
  align-items:center;
  gap:var(--space-2);
}
main > nav[aria-label="面包屑导航"] li + li::before{
  content:"/";
  color:var(--clr-muted);
  opacity:.6;
}
main > nav[aria-label="面包屑导航"] a{
  color:var(--clr-text-soft);
  padding:.15rem .35rem;
  border-radius:6px;
}
main > nav[aria-label="面包屑导航"] a:hover{color:var(--clr-primary);background:rgba(31,78,61,.07)}

/* ---------- Hero ---------- */
#hero{
  position:relative;
  overflow:hidden;
  padding:clamp(1.75rem,5vw,3.5rem);
  border:none;
  color:#f2f7f4;
  background:
    radial-gradient(900px 420px at 88% -20%, rgba(230,179,77,.45), transparent 60%),
    radial-gradient(700px 380px at -10% 120%, rgba(87,169,133,.5), transparent 60%),
    linear-gradient(135deg,#153a2d 0%,#1f4e3d 45%,#2f6b54 100%);
  box-shadow:var(--shadow-lg);
}
#hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(circle at 70% 20%,#000,transparent 75%);
  -webkit-mask-image:radial-gradient(circle at 70% 20%,#000,transparent 75%);
  pointer-events:none;
}
#hero::after{
  content:"";
  position:absolute;
  width:340px;height:340px;
  right:-120px;top:-120px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(230,179,77,.5),transparent 70%);
  filter:blur(10px);
  animation:float 9s ease-in-out infinite;
  pointer-events:none;
}
@keyframes float{
  0%,100%{transform:translateY(0) scale(1)}
  50%{transform:translateY(18px) scale(1.06)}
}
#hero h1{
  position:relative;
  color:#fff;
  max-width:26ch;
  text-shadow:0 2px 18px rgba(0,0,0,.25);
}
#hero h1::after{
  content:"";
  display:block;
  width:88px;height:5px;
  margin-top:var(--space-4);
  border-radius:var(--radius-pill);
  background:linear-gradient(90deg,var(--clr-accent),rgba(255,255,255,.2));
}
#hero p{
  position:relative;
  color:rgba(240,248,244,.88);
  max-width:72ch;
  font-size:clamp(.95rem,.9rem + .35vw,1.06rem);
}
#hero svg{
  position:relative;
  margin-top:var(--space-5);
  border-radius:var(--radius-md);
  box-shadow:0 18px 40px rgba(0,0,0,.3);
  border:1px solid rgba(255,255,255,.18);
  transition:transform .6s var(--ease);
}
#hero svg:hover{transform:translateY(-4px) scale(1.01)}

/* ---------- Cards: products / solutions / cases / news ---------- */
#products h3,
#solutions h3,
#cases h3,
#news h3,
#howto h3{
  display:flex;
  align-items:center;
  gap:var(--space-2);
}
#products h3::before,
#solutions h3::before,
#cases h3::before,
#news h3::before,
#howto h3::before{
  content:"";
  flex:0 0 auto;
  width:10px;height:10px;
  border-radius:3px;
  background:linear-gradient(135deg,var(--clr-primary),var(--clr-accent));
  transform:rotate(45deg);
  transition:transform .4s var(--ease);
}
#products h3:hover::before,
#solutions h3:hover::before,
#cases h3:hover::before,
#news h3:hover::before,
#howto h3:hover::before{transform:rotate(135deg) scale(1.15)}

#products > h3,
#solutions > h3,
#cases > h3,
#news > h3{
  padding:var(--space-4);
  margin-top:var(--space-4);
  background:var(--clr-surface-2);
  border-radius:var(--radius-md);
  border-left:4px solid var(--clr-accent);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),background .35s var(--ease);
}
#products > h3:hover,
#solutions > h3:hover,
#cases > h3:hover,
#news > h3:hover{
  transform:translateX(6px);
  box-shadow:var(--shadow-sm);
  background:rgba(230,179,77,.14);
}

#products > h3 + p,
#solutions > h3 + p,
#cases > h3 + p,
#news > h3 + p{
  padding:0 var(--space-4) var(--space-2);
}

/* ---------- Articles ---------- */
#articles{
  display:grid;
  grid-template-columns:1fr;
  gap:var(--space-4);
}
#articles > h2{grid-column:1 / -1}
#articles article{
  position:relative;
  padding:var(--space-5);
  background:linear-gradient(160deg,var(--clr-surface) 0%,var(--clr-surface-2) 100%);
  border:1px solid var(--clr-border);
  border-radius:var(--radius-md);
  overflow:hidden;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
#articles article::before{
  content:"";
  position:absolute;
  inset:0 auto 0 0;
  width:4px;
  background:linear-gradient(180deg,var(--clr-primary),var(--clr-accent));
  opacity:.55;
  transition:opacity .35s var(--ease),width .35s var(--ease);
}
#articles article:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
  border-color:rgba(230,179,77,.4);
}
#articles article:hover::before{opacity:1;width:6px}
#articles article h3{
  margin-bottom:var(--space-2);
  transition:color .3s var(--ease);
}
#articles article:hover h3{color:var(--clr-accent)}
#articles article p{
  font-size:.93rem;
  color:var(--clr-text-soft);
}
#articles article a{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  font-weight:600;
  font-size:.9rem;
  padding:.4rem .9rem;
  border-radius:var(--radius-pill);
  background:rgba(31,78,61,.08);
  color:var(--clr-primary-light);
  transition:background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease);
}
#articles article a::after{
  content:"→";
  transition:transform .3s var(--ease);
}
#articles article a:hover{
  background:linear-gradient(90deg,var(--clr-primary),var(--clr-primary-light));
  color:#fff;
  transform:translateX(3px);
}
#articles article a:hover::after{transform:translateX(4px)}

/* ---------- FAQ ---------- */
#faq h3{
  position:relative;
  margin-top:var(--space-5);
  padding:var(--space-4) var(--space-4) var(--space-4) var(--space-6);
  background:var(--clr-surface-2);
  border-radius:var(--radius-md);
  border:1px solid var(--clr-border);
  cursor:pointer;
  transition:background .35s var(--ease),transform .35s var(--ease),box-shadow .35s var(--ease);
}
#faq h3::before{
  content:"?";
  position:absolute;
  left:var(--space-3);
  top:50%;
  transform:translateY(-50%);
  width:24px;height:24px;
  display:grid;
  place-items:center;
  font-size:.8rem;
  font-weight:700;
  color:#fff;
  border-radius:50%;
  background:linear-gradient(135deg,var(--clr-primary),var(--clr-accent));
  box-shadow:0 4px 10px rgba(31,78,61,.25);
}
#faq h3:hover{
  background:rgba(230,179,77,.16);
  transform:translateX(4px);
  box-shadow:var(--shadow-sm);
}
#faq h3 + p{
  padding:var(--space-3) var(--space-4) var(--space-2) var(--space-6);
  margin-bottom:var(--space-3);
  border-left:2px dashed var(--clr-border);
  margin-left:var(--space-3);
}

/* ---------- HowTo ---------- */
#howto{
  background:
    linear-gradient(160deg,rgba(31,78,61,.06),rgba(230,179,77,.08)),
    var(--clr-surface);
}
#howto > h3{
  margin-top:var(--space-4);
  padding-left:var(--space-4);
  border-left:4px solid var(--clr-primary);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  background:var(--clr-surface-2);
  padding-top:var(--space-2);
  padding-bottom:var(--space-2);
}
#howto > h3:hover{border-left-color:var(--clr-accent)}

/* ---------- Contact ---------- */
#contact{
  background:
    radial-gradient(600px 300px at 100% 0%, rgba(230,179,77,.18), transparent 60%),
    linear-gradient(135deg,var(--clr-primary-dark),var(--clr-primary));
  color:#eef6f1;
  border:none;
  box-shadow:var(--shadow-lg);
}
#contact h2{color:#fff}
#contact h2::after{background:linear-gradient(90deg,var(--clr-accent),rgba(255,255,255,.25))}
#contact p{
  color:rgba(238,246,241,.9);
  padding:var(--space-3) var(--space-4);
  margin-bottom:var(--space-2);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-md);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  transition:background .35s var(--ease),transform .35s var(--ease);
}
#contact p:hover{
  background:rgba(255,255,255,.16);
  transform:translateX(4px);
}
#contact p:first-of-type{font-weight:700;font-size:1.05rem;color:#fff}

/* ---------- Sitemap & Links ---------- */
#sitemap ul,
#links ul{
  display:flex;
  flex-wrap:wrap;
  gap:var(--space-3);
  padding:0;
  list-style:none;
}
#sitemap li,
#links li{margin:0}
#sitemap a,
#links a{
  display:inline-block;
  padding:.5rem 1rem;
  font-size:.9rem;
  font-weight:500;
  color:var(--clr-text-soft);
  background:var(--clr-surface-2);
  border:1px solid var(--clr-border);
  border-radius:var(--radius-pill);
  transition:all .3s var(--ease);
}
#sitemap a:hover,
#links a:hover{
  color:#fff;
  background:linear-gradient(135deg,var(--clr-primary),var(--clr-primary-light));
  border-color:transparent;
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}

/* ---------- Legal ---------- */
#legal{
  background:var(--clr-surface-2);
}
#legal h2{
  font-size:1.1rem;
  margin-top:var(--space-4);
  padding-bottom:var(--space-2);
}
#legal h2::after{width:40px;height:3px}
#legal h2:first-of-type{margin-top:0}
#legal p{font-size:.9rem;color:var(--clr-muted)}

/* ---------- Footer ---------- */
footer{
  position:relative;
  padding:var(--space-7) clamp(1rem,4vw,2.5rem);
  text-align:center;
  color:rgba(238,246,241,.85);
  background:linear-gradient(180deg,#153a2d,#0e1613);
  border-top:3px solid var(--clr-accent);
}
footer::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:min(720px,80%);
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(230,179,77,.6),transparent);
}
footer p{
  margin:0 auto var(--space-2);
  max-width:70ch;
  font-size:.88rem;
  color:rgba(238,246,241,.75);
}
footer p:first-child{
  font-weight:600;
  color:#fff;
  font-size:.95rem;
  letter-spacing:.02em;
}

/* ---------- Responsive ---------- */
@media (min-width:720px){
  #articles{grid-template-columns:repeat(2,1fr)}
}

@media (min-width:1024px){
  #articles{grid-template-columns:repeat(3,1fr)}
  #hero{padding:clamp(2.5rem,5vw,4rem)}
}

@media (max-width:860px){
  header{
    flex-direction:column;
    align-items:flex-start;
    gap:var(--space-3);
    padding:var(--space-3) var(--space-4);
  }
  header nav{width:100%}
  header nav ul{
    justify-content:flex-start;
    flex-wrap:nowrap;
    overflow-x:auto;
    padding-bottom:var(--space-2);
    scrollbar-width:thin;
    -webkit-overflow-scrolling:touch;
  }
  header nav ul::-webkit-scrollbar{height:5px}
  header nav ul::-webkit-scrollbar-thumb{background:var(--clr-border);border-radius:99px}
  header nav a{white-space:nowrap}
}

@media (max-width:600px){
  html{scroll-padding-top:130px}
  body{font-size:15px}
  main{padding:var(--space-4) var(--space-4) var(--space-7)}
  section{
    padding:var(--space-5) var(--space-4);
    border-radius:var(--radius-md);
    margin-bottom:var(--space-5);
  }
  #hero{border-radius:var(--radius-md)}
  #hero h1{max-width:none}
  #articles article{padding:var(--space-4)}
  #faq h3{
    padding-left:2.75rem;
    font-size:1rem;
  }
  #faq h3 + p{padding-left:var(--space-4);margin-left:0}
  #contact p{font-size:.9rem;padding:var(--space-2) var(--space-3)}
  footer{padding:var(--space-6) var(--space-4)}
}

@media (max-width:380px){
  .brand span{font-size:.85rem}
  #sitemap a,#links a{padding:.4rem .75rem;font-size:.82rem}
}

/* ---------- Print ---------- */
@media print{
  header,footer,#hero::after{display:none}
  body{background:#fff;color:#000}
  section{box-shadow:none;border:1px solid #ccc;break-inside:avoid}
  a{color:#000;text-decoration:underline}
}