:root{
  --brand:#2e8b57;
  --brand-dark:#1f5f3c;
  --brand-light:#7fc79a;
  --brand-soft:#eafaf0;
  --text:#243b2f;
  --text-soft:#33473c;
  --text-muted:#7a9384;
  --bg:#f4faf6;
  --card:#ffffff;
  --border:#e2efe6;
  --border-soft:#cfe3d6;
  --shadow:0 2px 10px rgba(46,139,87,.08);
  --shadow-hover:0 10px 30px rgba(46,139,87,.18);
  --glass:rgba(255,255,255,.72);
  --glass-border:rgba(255,255,255,.55);
  --radius:14px;
  --radius-sm:10px;
  --radius-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.35s;
}

@media (prefers-color-scheme: dark){
  :root{
    --brand:#4fbd7f;
    --brand-dark:#3da368;
    --brand-light:#2e8b57;
    --brand-soft:#16301f;
    --text:#e6f2ea;
    --text-soft:#c4d9cc;
    --text-muted:#8aa89a;
    --bg:#0f1a14;
    --card:#16241b;
    --border:#22392b;
    --border-soft:#2c4736;
    --shadow:0 2px 10px rgba(0,0,0,.4);
    --shadow-hover:0 10px 30px rgba(0,0,0,.55);
    --glass:rgba(22,36,27,.72);
    --glass-border:rgba(79,189,127,.22);
  }
}

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.8;
  overflow-x:hidden;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(circle at 12% 8%,rgba(46,139,87,.10),transparent 42%),
    radial-gradient(circle at 88% 0%,rgba(127,199,154,.14),transparent 40%),
    radial-gradient(circle at 50% 100%,rgba(46,139,87,.08),transparent 55%);
  pointer-events:none;
}

a{
  color:var(--brand);
  text-decoration:none;
  transition:color var(--dur) var(--ease);
}

a:hover{
  color:var(--brand-dark);
}

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

::selection{
  background:var(--brand);
  color:#fff;
}

::-webkit-scrollbar{
  width:10px;
  height:10px;
}

::-webkit-scrollbar-track{
  background:transparent;
}

::-webkit-scrollbar-thumb{
  background:var(--border-soft);
  border-radius:var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover{
  background:var(--brand);
}

header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid var(--glass-border);
  box-shadow:0 2px 18px rgba(0,0,0,.06);
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}

.nav-wrap{
  max-width:1180px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:12px 20px;
}

.logo{
  font-size:22px;
  font-weight:800;
  letter-spacing:.5px;
  color:var(--brand);
  white-space:nowrap;
  position:relative;
  padding-left:28px;
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
}

.logo::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:18px;
  height:18px;
  transform:translateY(-50%);
  border-radius:50% 50% 46% 46%;
  background:linear-gradient(140deg,var(--brand-light),var(--brand));
  box-shadow:0 2px 8px rgba(46,139,87,.45);
}

.logo:hover{
  transform:translateY(-1px);
}

nav ul{
  display:flex;
  gap:22px;
  list-style:none;
  flex-wrap:wrap;
}

nav a{
  font-size:15px;
  color:var(--text);
  position:relative;
  padding:4px 0;
  transition:color var(--dur) var(--ease);
}

nav a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-light));
  transition:width var(--dur) var(--ease);
}

nav a:hover{
  color:var(--brand);
}

nav a:hover::after{
  width:100%;
}

.search-box{
  flex-shrink:0;
}

.search-box input{
  padding:8px 14px;
  width:210px;
  border:1px solid var(--border-soft);
  border-radius:var(--radius-pill);
  background:var(--glass);
  color:var(--text);
  font-size:14px;
  outline:none;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),width var(--dur) var(--ease),background var(--dur) var(--ease);
}

.search-box input::placeholder{
  color:var(--text-muted);
}

.search-box input:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(46,139,87,.16);
  width:240px;
}

main{
  max-width:1180px;
  margin:0 auto;
  padding:0 20px;
}

section{
  padding:38px 0;
  border-bottom:1px solid var(--border);
  animation:riseIn .7s var(--ease) both;
}

section:nth-of-type(odd){
  animation-delay:.05s;
}

@keyframes riseIn{
  from{
    opacity:0;
    transform:translateY(26px);
  }
  to{
    opacity:1;
    transform:translateY(0);
  }
}

@keyframes floatIn{
  from{
    opacity:0;
    transform:translateY(18px) scale(.98);
  }
  to{
    opacity:1;
    transform:translateY(0) scale(1);
  }
}

@keyframes shimmer{
  0%{
    background-position:0% 50%;
  }
  50%{
    background-position:100% 50%;
  }
  100%{
    background-position:0% 50%;
  }
}

h1{
  font-size:30px;
  margin:20px 0 12px;
  color:var(--brand-dark);
  line-height:1.35;
  letter-spacing:.3px;
}

h2{
  font-size:24px;
  margin:22px 0 12px;
  color:var(--brand);
  border-left:5px solid var(--brand);
  padding-left:12px;
  line-height:1.4;
  position:relative;
}

h2::after{
  content:"";
  position:absolute;
  left:-5px;
  top:0;
  width:5px;
  height:100%;
  border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-light));
}

h3{
  font-size:19px;
  margin:16px 0 8px;
  color:var(--text);
  line-height:1.45;
}

h4{
  font-size:16px;
  margin:12px 0 6px;
  color:var(--text-soft);
}

p{
  margin:10px 0;
  font-size:15.5px;
  color:var(--text-soft);
}

ul,ol{
  margin:10px 0 10px 24px;
}

li{
  margin:6px 0;
  font-size:15px;
  color:var(--text-soft);
}

strong{
  color:var(--brand-dark);
}

.banner{
  position:relative;
  overflow:hidden;
  background:linear-gradient(120deg,#2e8b57 0%,#3f9e6c 35%,#7fc79a 70%,#a8e0c0 100%);
  background-size:220% 220%;
  animation:shimmer 14s ease infinite;
  color:#fff;
  border-radius:var(--radius);
  padding:44px 30px;
  margin:20px 0;
  box-shadow:0 14px 40px rgba(46,139,87,.28);
  isolation:isolate;
}

.banner::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 82% 18%,rgba(255,255,255,.35),transparent 45%),
    radial-gradient(circle at 10% 90%,rgba(255,255,255,.18),transparent 40%);
  pointer-events:none;
  z-index:0;
}

.banner::after{
  content:"";
  position:absolute;
  right:-70px;
  top:-70px;
  width:230px;
  height:230px;
  border-radius:50%;
  background:rgba(255,255,255,.12);
  -webkit-backdrop-filter:blur(2px);
  backdrop-filter:blur(2px);
  pointer-events:none;
  z-index:0;
}

.banner h1{
  color:#fff;
  position:relative;
  z-index:1;
  text-shadow:0 2px 14px rgba(0,0,0,.18);
}

.banner p{
  color:#eafaf0;
  position:relative;
  z-index:1;
  max-width:900px;
}

.banner .btn{
  position:relative;
  z-index:1;
}

.card{
  position:relative;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:18px 20px;
  margin:14px 0;
  box-shadow:var(--shadow);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
  animation:floatIn .6s var(--ease) both;
}

.card::before{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:linear-gradient(135deg,rgba(46,139,87,.06),transparent 55%);
  opacity:0;
  transition:opacity var(--dur) var(--ease);
  pointer-events:none;
}

.card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-hover);
  border-color:var(--brand-light);
}

.card:hover::before{
  opacity:1;
}

.card h3{
  margin-top:0;
}

.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:18px;
}

.grid .card{
  margin:0;
}

.btn{
  display:inline-block;
  position:relative;
  overflow:hidden;
  background:linear-gradient(120deg,var(--brand),var(--brand-light));
  color:#fff;
  padding:10px 22px;
  border-radius:var(--radius-pill);
  border:none;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  margin-top:10px;
  box-shadow:0 6px 18px rgba(46,139,87,.32);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),filter var(--dur) var(--ease);
}

.btn::after{
  content:"";
  position:absolute;
  top:0;
  left:-120%;
  width:60%;
  height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.45),transparent);
  transform:skewX(-20deg);
  transition:left .6s var(--ease);
}

.btn:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 10px 26px rgba(46,139,87,.42);
  filter:brightness(1.05);
}

.btn:hover::after{
  left:130%;
}

.meta{
  font-size:13px;
  color:var(--text-muted);
  letter-spacing:.2px;
}

.tag{
  display:inline-block;
  background:var(--brand-soft);
  color:var(--brand-dark);
  font-size:12.5px;
  padding:3px 12px;
  border-radius:var(--radius-pill);
  margin:0 6px 6px 0;
  border:1px solid var(--border-soft);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}

.tag:hover{
  background:var(--brand);
  color:#fff;
  transform:translateY(-2px);
}

.breadcrumb{
  font-size:13.5px;
  color:var(--text-muted);
  padding:14px 0;
}

.breadcrumb a{
  color:var(--brand);
  transition:color var(--dur) var(--ease);
}

.breadcrumb a:hover{
  color:var(--brand-dark);
  text-decoration:underline;
}

.faq-item{
  border-bottom:1px dashed var(--border-soft);
  padding:14px 0;
  transition:padding-left var(--dur) var(--ease),background var(--dur) var(--ease);
  border-radius:var(--radius-sm);
}

.faq-item:hover{
  padding-left:10px;
  background:linear-gradient(90deg,rgba(46,139,87,.06),transparent 70%);
}

.faq-item h3{
  cursor:pointer;
  color:var(--brand-dark);
  position:relative;
  padding-left:22px;
  transition:color var(--dur) var(--ease);
}

.faq-item h3::before{
  content:"+";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:16px;
  height:16px;
  line-height:16px;
  text-align:center;
  font-size:15px;
  font-weight:700;
  color:var(--brand);
  border-radius:50%;
  background:var(--brand-soft);
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease);
}

.faq-item:hover h3::before{
  transform:translateY(-50%) rotate(90deg);
  background:var(--brand);
  color:#fff;
}

.faq-item h3:hover{
  color:var(--brand);
}

table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  margin:14px 0;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  overflow:hidden;
  font-size:14.5px;
}

th,td{
  border-bottom:1px solid var(--border);
  padding:10px 12px;
  font-size:14.5px;
  text-align:left;
  color:var(--text-soft);
}

th{
  background:var(--brand-soft);
  color:var(--brand-dark);
  font-weight:700;
}

tbody tr:last-child td,
tr:last-child td{
  border-bottom:none;
}

tr{
  transition:background var(--dur) var(--ease);
}

tr:hover td{
  background:rgba(46,139,87,.06);
}

footer{
  background:linear-gradient(160deg,#1f3a2c,#16281e 70%,#101d15);
  color:#cfe3d6;
  padding:34px 20px;
  margin-top:30px;
  position:relative;
  overflow:hidden;
}

footer::before{
  content:"";
  position:absolute;
  top:-60px;
  right:-60px;
  width:200px;
  height:200px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(127,199,154,.22),transparent 70%);
  pointer-events:none;
}

footer a{
  color:#9fd8b5;
  transition:color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}

footer a:hover{
  color:#eafaf0;
  padding-left:4px;
}

footer h4{
  color:#eafaf0;
  margin-bottom:8px;
}

footer p{
  color:#cfe3d6;
  font-size:14px;
}

footer ul{
  list-style:none;
  margin-left:0;
}

footer li{
  color:#cfe3d6;
  font-size:14px;
}

.footer-inner{
  max-width:1180px;
  margin:0 auto;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:22px;
  position:relative;
  z-index:1;
}

.back-top{
  position:fixed;
  right:20px;
  bottom:30px;
  width:46px;
  height:46px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:linear-gradient(140deg,var(--brand),var(--brand-light));
  color:#fff;
  font-size:20px;
  line-height:1;
  box-shadow:0 8px 22px rgba(46,139,87,.4);
  z-index:200;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),filter var(--dur) var(--ease);
}

.back-top:hover{
  color:#fff;
  transform:translateY(-4px) scale(1.06);
  box-shadow:0 14px 30px rgba(46,139,87,.5);
  filter:brightness(1.08);
}

.back-top:active{
  transform:translateY(-1px) scale(.98);
}

#sitemap ul,
#links ul{
  list-style:none;
  margin-left:0;
  display:flex;
  flex-wrap:wrap;
  gap:10px 16px;
}

#sitemap li,
#links li{
  margin:0;
}

#sitemap a,
#links a{
  display:inline-block;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  background:var(--card);
  border:1px solid var(--border);
  font-size:14px;
  box-shadow:var(--shadow);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}

#sitemap a:hover,
#links a:hover{
  transform:translateY(-3px);
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
  box-shadow:var(--shadow-hover);
}

#policy h3{
  color:var(--brand);
}

#updates{
  border-bottom:none;
}

article.card{
  animation:floatIn .6s var(--ease) both;
}

article.card:nth-child(2){animation-delay:.05s;}
article.card:nth-child(3){animation-delay:.1s;}
article.card:nth-child(4){animation-delay:.15s;}
article.card:nth-child(5){animation-delay:.2s;}
article.card:nth-child(6){animation-delay:.25s;}
article.card:nth-child(7){animation-delay:.3s;}
article.card:nth-child(8){animation-delay:.35s;}
article.card:nth-child(9){animation-delay:.4s;}
article.card:nth-child(10){animation-delay:.45s;}

article.card a{
  font-weight:600;
  display:inline-block;
  margin-top:6px;
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
}

article.card a:hover{
  transform:translateX(4px);
}

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

@media (max-width:1024px){
  .search-box input{
    width:170px;
  }
  .search-box input:focus{
    width:200px;
  }
  nav ul{
    gap:16px;
  }
  nav a{
    font-size:14px;
  }
}

@media (max-width:760px){
  body{
    line-height:1.75;
  }
  .nav-wrap{
    flex-wrap:wrap;
    gap:10px;
    padding:10px 16px;
  }
  nav ul{
    display:none;
  }
  .search-box{
    flex:1;
    min-width:140px;
  }
  .search-box input,
  .search-box input:focus{
    width:100%;
  }
  main{
    padding:0 16px;
  }
  section{
    padding:28px 0;
  }
  h1{
    font-size:24px;
  }
  h2{
    font-size:20px;
    padding-left:10px;
  }
  h3{
    font-size:17px;
  }
  p,li{
    font-size:14.5px;
  }
  .banner{
    padding:30px 20px;
    border-radius:12px;
  }
  .banner h1{
    font-size:22px;
  }
  .grid{
    grid-template-columns:1fr;
    gap:14px;
  }
  .card{
    padding:16px 16px;
    border-radius:12px;
  }
  .btn{
    padding:9px 18px;
    font-size:14px;
  }
  table{
    display:block;
    overflow-x:auto;
    white-space:nowrap;
    -webkit-overflow-scrolling:touch;
  }
  .back-top{
    right:14px;
    bottom:20px;
    width:42px;
    height:42px;
    font-size:18px;
  }
  .footer-inner{
    grid-template-columns:1fr;
    gap:18px;
  }
}

@media (max-width:420px){
  h1{
    font-size:21px;
  }
  h2{
    font-size:18px;
  }
  .logo{
    font-size:19px;
    padding-left:24px;
  }
  .logo::before{
    width:15px;
    height:15px;
  }
  .banner{
    padding:24px 16px;
  }
  .banner h1{
    font-size:20px;
  }
  .banner p{
    font-size:14px;
  }
}

@media print{
  header,
  footer,
  .back-top,
  .search-box{
    display:none;
  }
  body{
    background:#fff;
    color:#000;
  }
  section{
    border-bottom:1px solid #ccc;
    animation:none;
  }
  .card,
  .banner{
    box-shadow:none;
    animation:none;
  }
}