/* Sainthouse Technology - static site stylesheet
   Primary green inherited from the original theme: #008639 */

:root{
  --green:#008639;
  --green-dark:#00662b;
  --green-darker:#004d20;
  --green-light:#e8f5ee;
  --green-tint:#f4faf7;
  --ink:#22292b;
  --ink-soft:#5a6668;
  --line:#e2e8e6;
  --bg:#ffffff;
  --bg-soft:#f7f9f8;
  --radius:10px;
  --maxw:1240px;
  --shadow-sm:0 1px 3px rgba(16,42,28,.07);
  --shadow-md:0 10px 28px rgba(16,42,28,.10);
  --shadow-lg:0 18px 48px rgba(16,42,28,.16);
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  font-size:16px;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--green-dark);text-decoration:none;}
a:hover{text-decoration:underline;}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em;letter-spacing:-.01em;}
h1{font-size:1.9rem;}
h2{font-size:1.45rem;}
h3{font-size:1.15rem;}
p{margin:0 0 1em;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px;}

/* ---------- Header ---------- */
.site-header{background:linear-gradient(90deg,var(--green-darker),var(--green) 55%,var(--green-dark));color:#fff;
  position:sticky;top:0;z-index:900;box-shadow:0 2px 12px rgba(0,60,30,.25);}
.topbar{background:rgba(0,0,0,.22);font-size:.82rem;}
.topbar .wrap{display:flex;justify-content:flex-end;gap:18px;flex-wrap:wrap;padding:6px 20px;}
.topbar a{color:#cfe9db;}
.topbar span{opacity:.9;}
.header-main .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px 20px;padding:12px 20px 0;flex-wrap:wrap;}
.header-main .nav{order:3;width:100%;padding-bottom:10px;}
.brand{display:flex;align-items:center;gap:12px;color:#fff;}
.brand:hover{text-decoration:none;}
/* 注意：logo 本身是透明底白字，绝不可再加白底，否则文字隐形 */
.brand img{height:52px;width:auto;filter:drop-shadow(0 1px 2px rgba(0,0,0,.35));}
.brand-name{font-weight:700;font-size:1.08rem;line-height:1.2;text-shadow:0 1px 2px rgba(0,0,0,.3);}
.brand-tag{font-size:.75rem;opacity:.9;display:block;font-weight:400;}

.nav{display:flex;gap:4px;flex-wrap:wrap;}
.nav a{color:#fff;padding:8px 12px;border-radius:6px;font-size:.92rem;font-weight:500;transition:background .15s;}
.nav a:hover,.nav a.on{background:rgba(0,0,0,.22);text-decoration:none;}

.header-cta{display:flex;align-items:center;gap:10px;}
.btn{
  display:inline-block;background:#fff;color:var(--green-darker);
  padding:10px 20px;border-radius:6px;font-weight:600;font-size:.92rem;border:1px solid #fff;
  transition:transform .15s,box-shadow .15s,background .15s;
}
.btn:hover{background:var(--green-tint);text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-outline{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.75);}
.btn-outline:hover{background:rgba(255,255,255,.16);color:#fff;}
.btn-green{background:var(--green);color:#fff;border-color:var(--green);}
.btn-green:hover{background:var(--green-dark);color:#fff;}

.nav-toggle{display:none;background:transparent;border:1px solid rgba(255,255,255,.7);
  color:#fff;padding:8px 12px;border-radius:6px;font-size:.9rem;cursor:pointer;}

/* ---------- Hero 轮播 ---------- */
.hero{position:relative;overflow:hidden;background:var(--green-darker);color:#fff;}
.hero-slide{
  position:absolute;inset:0;opacity:0;transition:opacity .9s ease;
  background-size:cover;background-position:center;
}
.hero-slide.on{opacity:1;position:relative;}
.hero-slide::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(0,50,25,.86) 0%,rgba(0,50,25,.62) 45%,rgba(0,50,25,.25) 100%);
}
.hero-inner{position:relative;z-index:2;padding:74px 0 84px;max-width:660px;}
.hero-kicker{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.35);
  padding:4px 14px;border-radius:20px;font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;margin-bottom:16px;}
.hero h1,.hero-h1{font-size:2.5rem;margin:0 0 .35em;text-shadow:0 2px 12px rgba(0,0,0,.4);letter-spacing:-.02em;font-weight:700;line-height:1.25;}
.hero p{font-size:1.08rem;opacity:.96;text-shadow:0 1px 6px rgba(0,0,0,.4);}
.hero-actions{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap;}
.hero-nav{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.5);
  background:rgba(0,0,0,.28);color:#fff;font-size:1.25rem;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:background .15s;
}
.hero-nav:hover{background:rgba(0,0,0,.5);}
.hero-prev{left:18px;}
.hero-next{right:18px;}
.hero-dots{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);z-index:3;display:flex;gap:8px;}
.hero-dots button{width:10px;height:10px;border-radius:50%;border:1px solid rgba(255,255,255,.8);
  background:transparent;cursor:pointer;padding:0;transition:background .15s,transform .15s;}
.hero-dots button.on{background:#fff;transform:scale(1.25);}

/* ---------- Breadcrumb ---------- */
.crumbs{background:var(--bg-soft);border-bottom:1px solid var(--line);font-size:.85rem;padding:10px 0;}
.crumbs a{color:var(--ink-soft);}
.crumbs span{color:var(--ink-soft);margin:0 6px;}
.crumbs .cur{color:var(--green-dark);font-weight:600;}

/* ---------- Sections ---------- */
.section{padding:52px 0;}
.section.alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:28px;}
.section-head h2{color:var(--green-darker);font-size:1.6rem;}
.section-head h2::after{content:"";display:block;width:52px;height:3px;background:var(--green);border-radius:2px;margin-top:10px;}
.section-head p{color:var(--ink-soft);max-width:820px;}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:22px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:box-shadow .2s,transform .2s;display:flex;flex-direction:column;}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);text-decoration:none;}
.card-media{background:var(--green-tint);aspect-ratio:4/3;overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.05);}
.card-body{padding:14px 16px 18px;flex:1;display:flex;flex-direction:column;}
.card-body h3{font-size:1rem;margin-bottom:.35em;}
.card-body h3 a{color:var(--ink);}
.card-body p{font-size:.88rem;color:var(--ink-soft);margin-bottom:.5em;flex:1;}
.card-more{color:var(--green);font-weight:600;font-size:.85rem;}

/* ---------- 单行横向滚动产品条（Featured Products 一行展示） ---------- */
.strip-wrap{position:relative;}
.strip{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 18px;scrollbar-width:thin;scrollbar-color:var(--green) var(--green-tint);
}
.strip::-webkit-scrollbar{height:8px;}
.strip::-webkit-scrollbar-track{background:var(--green-tint);border-radius:4px;}
.strip::-webkit-scrollbar-thumb{background:var(--green);border-radius:4px;}
.strip .card{flex:0 0 272px;scroll-snap-align:start;}
.strip-btn{
  position:absolute;top:38%;z-index:5;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--green-darker);
  font-size:1.15rem;cursor:pointer;box-shadow:var(--shadow-md);
  display:flex;align-items:center;justify-content:center;transition:background .15s,transform .15s;
}
.strip-btn:hover{background:var(--green);color:#fff;transform:scale(1.06);}
.strip-prev{left:-14px;}
.strip-next{right:-14px;}

/* ---------- Product page ---------- */
.product-wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:38px;padding:40px 0;align-items:start;}
.gallery-main{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  background:var(--green-tint);cursor:zoom-in;box-shadow:var(--shadow-sm);}
.gallery-main img{width:100%;}
.gallery-thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap;}
.gallery-thumbs img{width:88px;height:66px;object-fit:cover;border:2px solid var(--line);border-radius:6px;cursor:pointer;
  transition:border-color .15s,transform .15s;}
.gallery-thumbs img:hover{border-color:var(--green);transform:translateY(-1px);}
.gallery-thumbs img.on{border-color:var(--green);box-shadow:0 0 0 2px var(--green-light);}

/* ---------- 图片灯箱（点击放大） ---------- */
.lightbox{
  position:fixed;inset:0;z-index:2000;background:rgba(8,18,12,.92);
  display:none;align-items:center;justify-content:center;flex-direction:column;
}
.lightbox.open{display:flex;}
.lightbox img{max-width:92vw;max-height:82vh;border-radius:6px;box-shadow:var(--shadow-lg);
  transition:transform .2s ease;cursor:zoom-in;}
.lightbox img.zoomed{transform:scale(2);cursor:zoom-out;}
.lb-close{position:absolute;top:18px;right:24px;background:none;border:none;color:#fff;
  font-size:2.2rem;cursor:pointer;line-height:1;opacity:.85;}
.lb-close:hover{opacity:1;}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.3);color:#fff;width:48px;height:48px;border-radius:50%;
  font-size:1.5rem;cursor:pointer;display:flex;align-items:center;justify-content:center;}
.lb-nav:hover{background:rgba(255,255,255,.28);}
.lb-prev{left:22px;}
.lb-next{right:22px;}
.lb-count{color:#cfe9db;font-size:.88rem;margin-top:14px;letter-spacing:.05em;}

.answer-box{background:var(--green-light);border-left:4px solid var(--green);
  padding:16px 18px;border-radius:0 var(--radius) var(--radius) 0;margin:0 0 24px;}
.answer-box h2{font-size:1.1rem;color:var(--green-darker);margin-bottom:.4em;}
.answer-box p{margin:0;font-size:.97rem;}

.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0;}

table.spec{width:100%;border-collapse:collapse;font-size:.92rem;margin-bottom:20px;box-shadow:var(--shadow-sm);border-radius:var(--radius);overflow:hidden;}
table.spec th,table.spec td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top;}
table.spec th{background:var(--green-tint);width:32%;color:var(--green-darker);font-weight:600;}

/* ---------- FAQ (AEO) ---------- */
.faq{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:24px;}
.faq details{border-bottom:1px solid var(--line);}
.faq details:last-child{border-bottom:none;}
.faq summary{cursor:pointer;padding:14px 18px;font-weight:600;background:var(--bg-soft);
  color:var(--green-darker);list-style:none;transition:background .15s;}
.faq summary:hover{background:var(--green-tint);}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::before{content:"+ ";color:var(--green);font-weight:700;}
.faq details[open] summary::before{content:"\2212  ";}
.faq .faq-body{padding:14px 18px;font-size:.94rem;color:var(--ink-soft);}

/* ---------- Sidebar ---------- */
.layout{display:grid;grid-template-columns:1fr 280px;gap:34px;padding:38px 0;align-items:start;}
.side-box{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:20px;overflow:hidden;box-shadow:var(--shadow-sm);}
.side-box h3{background:var(--green);color:#fff;margin:0;padding:11px 16px;font-size:1rem;}
.side-box ul{list-style:none;margin:0;padding:8px 0;}
.side-box li a{display:block;padding:7px 16px;font-size:.9rem;color:var(--ink);}
.side-box li a:hover{background:var(--green-tint);text-decoration:none;color:var(--green-darker);}
.side-box li a.on{background:var(--green-tint);color:var(--green-darker);font-weight:600;}

/* ---------- Contact / form ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;}
.contact-list{list-style:none;padding:0;}
.contact-list li{padding:9px 0;border-bottom:1px dashed var(--line);font-size:.94rem;}
.contact-list strong{color:var(--green-darker);display:inline-block;min-width:88px;}

form.quote label{display:block;font-size:.85rem;font-weight:600;margin-bottom:4px;color:var(--ink);}
form.quote input,form.quote textarea,form.quote select{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:6px;
  font-size:.94rem;font-family:inherit;margin-bottom:14px;background:#fff;transition:border-color .15s,box-shadow .15s;}
form.quote input:focus,form.quote textarea:focus,form.quote select:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px var(--green-light);}
form.quote textarea{min-height:110px;resize:vertical;}

/* ---------- Footer ---------- */
.site-footer{background:linear-gradient(180deg,var(--green-darker),#003816);color:#d9ece1;padding:44px 0 0;margin-top:20px;}
.foot-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;padding-bottom:30px;}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:.7em;}
.site-footer a{color:#cfe9db;font-size:.9rem;}
.site-footer ul{list-style:none;padding:0;margin:0;}
.site-footer li{margin-bottom:6px;}
.foot-bottom{border-top:1px solid rgba(255,255,255,.15);padding:16px 0;font-size:.82rem;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;}

/* ---------- Misc ---------- */
.badge{display:inline-block;background:var(--green-light);color:var(--green-darker);
  padding:3px 10px;border-radius:20px;font-size:.78rem;font-weight:600;margin:0 5px 5px 0;}
.meta-note{font-size:.82rem;color:var(--ink-soft);margin-top:8px;}
.article-body{font-size:.98rem;}
.article-body img{margin:14px 0;border-radius:var(--radius);}
.pager{display:flex;justify-content:space-between;gap:14px;font-size:.9rem;
  border-top:1px solid var(--line);padding-top:18px;margin-top:26px;flex-wrap:wrap;}

/* ---- hub 页分类小标题 ---- */
.cat-title {
  margin: 44px 0 18px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink);
  border-left: 4px solid var(--green);
  padding-left: 12px;
}
.cat-title a { color: inherit; text-decoration: none; }
.cat-title a:hover { color: var(--green); }

/* ---- 反垃圾蜜罐字段：对用户不可见，仅用于识别机器人 ---- */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ---- 表单反馈提示 ---- */
.form-error {
  margin: 12px 0;
  padding: 10px 14px;
  border-left: 4px solid #c0392b;
  background: #fdecea;
  color: #7b241c;
  border-radius: 4px;
}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .layout{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:repeat(2,1fr);}
  .strip-prev{left:2px;}
  .strip-next{right:2px;}
}
@media (max-width:760px){
  h1{font-size:1.5rem;}
  .hero-inner{padding:48px 0 60px;}
  .hero h1,.hero-h1{font-size:1.7rem;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .product-wrap{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .nav{display:none;width:100%;flex-direction:column;}
  .nav.open{display:flex;}
  .nav-toggle{display:block;}
  .header-main .wrap{gap:10px;}
  .section{padding:34px 0;}
  .hero-nav{display:none;}
  .strip .card{flex-basis:228px;}
  .lb-nav{width:40px;height:40px;font-size:1.2rem;}
  .lb-prev{left:8px;}
  .lb-next{right:8px;}
}