:root{
  /* 主题色 */
  --paper:#E8DCCA;
  --paperDark:#C8B69F;
  --paperAccent:#A67C52;
  --ecoGreen:#4A6F5D;
  --natural:#F5F1E9;

  /* 中性色 */
  --gray-900:#1F2937;
  --gray-800:#2D2D2D;
  --gray-700:#374151;
  --gray-600:#4B5563;
  --gray-500:#6B7280;
  --gray-400:#9CA3AF;
  --gray-300:#D1D5DB;
  --gray-200:#E5E7EB;
  --gray-100:#F3F4F6;

  /* 布局 */
  --radius-sm:8px;
  --radius:14px;
  --radius-lg:16px;
  --shadow-sm:0 1px 2px rgba(0,0,0,.06);
  --shadow:0 4px 6px rgba(0,0,0,.1);
  --shadow-lg:0 10px 25px -5px rgba(0,0,0,.15);
}

@media (min-width: 768px) {
    .md\:w-1\/4 {
        width: 25%;
    }
}

/* Reset & base */
*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family: Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Noto Sans","Apple Color Emoji","Segoe UI Emoji",sans-serif;
  color:var(--gray-800);
  font-size: 16px;
  line-height:1.6;
}

/* 容器与段落 */
.container{max-width:1200px;margin:0 auto;padding:0 16px}
.section{padding:4rem 0}
.section-white{background:#fff}
.section-gradient{background:linear-gradient(180deg, var(--natural), #fff)}
.section-eco{background:rgba(74,111,93,.05)}
.section-head{margin-bottom: 2rem;}
.section-title{font-size:clamp(1.5rem,3vw,2.5rem);margin:8px 0 12px}

.center{text-align:center}
.max-680{max-width:680px;margin:0 auto}
.muted{color:var(--gray-600)}
.lead{font-size:1.1rem;color:var(--gray-700)}

/* 徽章 */
.badge{
  display:inline-block;
  padding:6px 10px;
  border-radius:999px;
  font-size:.85rem;
  font-weight:600;
}
.badge-paper{background:rgba(232,220,202,.5);color:var(--paperAccent)}
.badge-paper-soft{background:rgba(232,220,202,.3);color:var(--paperAccent)}
.badge-eco-soft{background:rgba(74,111,93,.2);color:var(--ecoGreen)}

/* 卡片通用 */
.card{
  background:var(--natural);
  border-radius:12px;overflow:hidden;
  box-shadow:var(--shadow);
  position:relative;
  transition:transform .3s ease, box-shadow .3s ease;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.card-image{height:200px;overflow:hidden}
.card-image img{width:100%;height:100%;object-fit:cover;transition:transform .7s ease}
.card:hover .card-image img{transform:scale(1.1)}
.card-content{padding:24px}
.card-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.card-icon{
  width:40px;height:40px;border-radius:999px;background:var(--paper);
  display:flex;align-items:center;justify-content:center;color:var(--paperAccent)
}
.card-title{font-size:1.25rem;font-weight:800;margin:0}
.card-description{margin:12px 0 14px;color:var(--gray-700)}
.card-list{list-style:none;margin:0;padding:0}
.card-list li{display:flex;gap:8px;align-items:flex-start;color:var(--gray-700);margin:8px 0}
.card-list i{color:var(--paperAccent);margin-top:3px}

/* 折角效果 */
.paper-fold::after{
  content:"";position:absolute;top:0;right:0;
  border-width:0 24px 24px 0;border-style:solid;border-color:#fff #f5f5f5;
  box-shadow:-3px 3px 5px rgba(0,0,0,.1)
}

/* 悬浮提升 */
.hover-lift{transition:transform .3s ease, box-shadow .3s ease}
.hover-lift:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}

/* 栅格 */
.cards-grid{display:grid;gap:24px;}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
@media (min-width:768px){
  .desktop-nav{display:flex}
  .menu-toggle{display:none}
  .hero-inner{grid-template-columns:1fr 1fr}
  .grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
  .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
}

/* 信息卡（features） */
.info-card{background:#fff;border-radius:var(--radius);;padding:2rem;box-shadow:var(--shadow)}
.info-row{display:flex;gap:16px;align-items:flex-start}
.info-icon{
  --tw-bg-opacity: 1;
  width:4rem;
  height:4rem;
  border-radius:9999px;
  display: flex;
  background-color: rgb(232 220 202 / var(--tw-bg-opacity, 1));
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color:var(--ecoGreen);
}

.table-wrap{
  margin-top: 4rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background-color: #fff;
}

.data-table {
  min-width: 768px;
  width: 100%;
  text-indent: 0;
  border-color: inherit;
  border-collapse: collapse;
}

.table-head {
  padding: 1.5rem;
}

.table-header {
  background-color: rgb(232 220 202 / 0.2);
  text-align: left;
}

.table-header th, .data-table td {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.data-table tbody tr{
  border-bottom: 1px solid rgb(229 231 235 / 1);
}

.hover-bg-paper:hover {
  background-color: rgba(232,220,202,0.1); /* --paper 10% 透明度 */
  transition: background-color 0.2s;
}


.app-image {
  overflow: hidden;
  height: 14rem;
  border-radius: 0.5rem;
  margin-bottom: 1.25rem;
}

.app-image img{
  object-fit: cover;
  overflow-clip-margin: content-box;
  overflow: clip;
  border-radius: 0.5rem;
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
}

.app-title {
  font-size: 1.25rem;
  line-height: 1.75rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 0.75rem;
}

.app-desc{
  margin-bottom: 1rem;
  display: block;
  text-align: justify;
}

.chip{
  background: rgba(232, 220, 202, .3);
  color: var(--paperAccent);
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: .75rem;
}

.eco-grid{margin-top: 2rem;margin-bottom: 2rem;}
.eco-image{
  border-radius: 0.75rem;
  max-width: 100%;
  width: 100%;
  height: 100%;
}

.eco-title {font-size: 1.85rem;}
.eco-item{display: flex; margin-top: 1rem;}
.eco-bullet{
  background-color: #4A6F5D;
  border-radius: 9999px;
  justify-content: center;
  align-items: center;
  width: 2.5rem;
  height: 2.5rem;
  flex-shrink:0;
  display: flex;
  margin-right: 1rem;
}
.eco-bullet i{color:#fff; font-size: 1.25rem;}
.trend-card{background-color: var(--natural); border-radius: 0.5rem;padding: 1.5rem;}
.trend-head{text-align: center;margin-bottom: 1.5rem;}
.trend-icon{
    background-color: rgb(74 111 93 / 0.2);
    border-radius: 9999px;
    justify-content: center;
    align-items: center;
    width: 3rem;
    height: 3rem;
    flex-shrink: 0;
    display: flex;
    margin-right: 1rem;
    margin-bottom: 1.25rem;
}
.trend-icon i{color:var(--ecoGreen); font-size: 1.25rem;}
.trend-text{color:rgb(75 85 99 / 1);font-size: 0.875rem;line-height: 1.25rem; margin-top: 1rem;}
.pro-text{
  display: flex;
  justify-content: center;
  flex-direction: column;
}
.text-secondary {color: rgb(200 169 81);}
.text-amber-500 {color: rgb(245 158 11);}
.mt-1 {margin-top: 0.25rem;}
.ml-1 {margin-left: 1rem;}
.mt-2 {margin-top: 1rem;}
.mr-2 {margin-right: 0.5rem;}
.mt-4{margin-top: 5rem;}