/* sy.css - 禹帅朔文具站样式 */
:root{
  --brand:#c22b2b;
  --brand-d:#8f1f1f;
  --ink:#333;
  --gray:#666;
  --line:#e8e4dd;
  --bg:#faf8f4;
  --white:#fff;
  --gold:#b8893a;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{font-family:"Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:var(--white);font-size:15px;line-height:1.7}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.sy-wrap{max-width:1200px;margin:0 auto;padding:0 16px}

/* 顶栏 */
.sy-topbar{background:var(--brand);color:#fff;font-size:13px}
.sy-topbar-in{display:flex;justify-content:space-between;padding-top:6px;padding-bottom:6px}
/* 页头 */
.sy-header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.06)}
.sy-head-main{display:flex;align-items:center;gap:28px;padding-top:12px;padding-bottom:12px}
.sy-logo img{height:52px;width:auto}
.sy-nav{display:flex;gap:4px;flex-wrap:wrap}
.sy-nav a{padding:8px 13px;font-size:15px;color:var(--ink);border-radius:4px;transition:.2s}
.sy-nav a:hover{color:var(--brand)}
.sy-nav a.sy-on{color:var(--brand);font-weight:700;background:#fdf0f0}
.sy-mnav-btn{display:none;margin-left:auto;background:var(--brand);color:#fff;border:none;padding:8px 16px;border-radius:4px;font-size:14px}
.sy-mnav{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#fff;z-index:200;padding:20px;overflow:auto}
.sy-mnav-head{font-size:18px;font-weight:700;display:flex;justify-content:space-between;margin-bottom:16px}
.sy-mnav a{display:block;padding:12px 4px;border-bottom:1px solid var(--line);font-size:16px}

/* 轮播 */
.sy-hero{position:relative;overflow:hidden;background:var(--bg)}
.sy-hero-slider{position:relative}
.sy-hero-slide{position:relative;display:none;width:100%}
.sy-hero-slide.sy-on{display:block}
.sy-hero-slide picture{display:block}
.sy-hero-slide img{width:100%;height:520px;object-fit:cover}
.sy-hero-cap{position:absolute;left:8%;top:50%;transform:translateY(-50%);max-width:520px;color:#fff}
.sy-hero-cap h3{font-size:40px;font-weight:800;margin-bottom:14px;text-shadow:0 2px 12px rgba(0,0,0,.45)}
.sy-hero-cap p{font-size:17px;line-height:1.8;margin-bottom:22px;text-shadow:0 1px 8px rgba(0,0,0,.5)}
.sy-hero-btn{display:inline-block;background:var(--brand);color:#fff;padding:11px 30px;border-radius:4px;font-size:15px;font-weight:600;transition:.2s}
.sy-hero-btn:hover{background:var(--brand-d)}
.sy-hero-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.sy-hero-dots span{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.6);cursor:pointer}
.sy-hero-dots span.sy-on{background:var(--brand)}

/* 区块 */
.sy-cat-sec,.sy-prod-sec,.sy-news-sec{padding:56px 16px}
.sy-sec-head{text-align:center;margin-bottom:36px}
.sy-sec-head h2{font-size:28px;font-weight:800;color:var(--ink);margin-bottom:6px}
.sy-sec-head p{color:var(--gray);font-size:14px}
.sy-catgrid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}
.sy-catitem{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:18px 12px;text-align:center;transition:.25s}
.sy-catitem:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.08);border-color:var(--brand)}
.sy-catimg{width:86px;height:86px;border-radius:50%;overflow:hidden;margin:0 auto 12px;border:3px solid #f3e8d8;display:block}
.sy-catimg img{width:100%;height:100%;object-fit:cover}
.sy-catname{display:block;font-size:16px;font-weight:700;margin-bottom:4px}
.sy-catdesc{display:block;font-size:12px;color:var(--gray)}

/* 服务承诺 */
.sy-serv-sec{background:#f3ede2;padding:44px 16px}
.sy-serv-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.sy-serv{text-align:center;padding:20px 12px}
.sy-serv-img{width:88px;height:88px;border-radius:50%;overflow:hidden;display:block;margin:0 auto 14px;border:3px solid #fff;box-shadow:0 4px 14px rgba(0,0,0,.08)}
.sy-serv-img img{width:100%;height:100%;object-fit:cover}
.sy-serv h4{font-size:17px;color:var(--brand);margin-bottom:8px}
.sy-serv p{font-size:13px;color:var(--gray)}

/* 商品网格 */
.sy-pgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.sy-pcard{background:var(--white);border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;flex-direction:column;transition:.25s}
.sy-pcard:hover{transform:translateY(-4px);box-shadow:0 10px 28px rgba(0,0,0,.1)}
.sy-pcard-img{aspect-ratio:1;overflow:hidden;background:var(--bg);display:block}
.sy-pcard-img img{width:100%;height:100%;object-fit:cover;transition:.3s}
.sy-pcard:hover .sy-pcard-img img{transform:scale(1.05)}
.sy-pcard-name{font-size:15px;font-weight:600;padding:12px 14px 2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sy-pcard-cat{font-size:12px;color:var(--gray);padding:0 14px}
.sy-pcard-price{color:var(--brand);font-size:17px;font-weight:800;padding:8px 14px 14px}
.sy-pcard-price i{font-style:normal;font-size:12px;font-weight:400;color:var(--gray);margin-left:4px}
.sy-sec-more{text-align:center;margin-top:32px}
.sy-sec-more a{display:inline-block;border:1px solid var(--brand);color:var(--brand);padding:9px 34px;border-radius:4px;transition:.2s}
.sy-sec-more a:hover{background:var(--brand);color:#fff}

/* 资讯 */
.sy-newslist{max-width:860px;margin:0 auto}
.sy-newsitem{display:flex;gap:14px;padding:14px 8px;border-bottom:1px dashed var(--line);align-items:baseline}
.sy-news-date{color:var(--gray);font-size:13px;flex-shrink:0;width:92px}
.sy-news-t{font-size:15px}
.sy-newsitem:hover .sy-news-t{color:var(--brand)}
.sy-newslist-col .sy-newsrow{display:flex;gap:16px;padding:16px 6px;border-bottom:1px solid var(--line);align-items:baseline}
.sy-newsrow:hover .sy-news-t{color:var(--brand)}
.sy-news-c{color:var(--gold);font-size:12px;margin-left:auto;flex-shrink:0}

/* 定制横幅（真实产品图背景） */
.sy-custom-banner{background:url(../img/banner/banner-custom.webp) center/cover no-repeat;color:#fff;padding:52px 16px;position:relative}
.sy-custom-in{display:flex;justify-content:space-between;align-items:center;gap:20px;position:relative;z-index:2}
.sy-custom-in h3{font-size:26px;margin-bottom:8px}
.sy-custom-in p{opacity:.9;font-size:14px}

/* 内页横幅+面包屑（真实产品图背景） */
.sy-inbanner{background:url(../img/banner/banner-inner.webp) center/cover no-repeat;color:#fff;padding:44px 16px;position:relative}
.sy-inbanner>*{position:relative;z-index:2}
.sy-inbanner h2{font-size:26px;font-weight:800}
.sy-crumb{font-size:13px;color:#d8b9b9;margin-top:8px}
.sy-crumb a{color:#f0d8d8}
.sy-page{padding:40px 16px}
.sy-cat-intro{color:var(--gray);margin-bottom:28px;padding:14px 18px;background:var(--bg);border-left:4px solid var(--brand);border-radius:4px}

/* 商品详情 */
.sy-pd{padding:32px 0 10px;background:#fff}
.sy-pd-main{display:grid;grid-template-columns:minmax(0,480px) 1fr;gap:44px;padding:20px 0}
.sy-pd-gallery{position:sticky;top:120px;align-self:start}
.sy-pd-mainimg{aspect-ratio:1;background:var(--bg);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.sy-pd-mainimg img{width:100%;height:100%;object-fit:cover}
.sy-pd-thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.sy-pd-thumbs img{width:74px;height:74px;object-fit:cover;border:2px solid transparent;border-radius:6px;cursor:pointer}
.sy-pd-thumbs img.sy-on{border-color:var(--brand)}
.sy-pd-info h1{font-size:26px;font-weight:800;margin-bottom:10px}
.sy-pd-cat{color:var(--gray);font-size:14px;margin-bottom:14px}
.sy-pd-price{font-size:30px;font-weight:900;color:var(--brand);margin-bottom:18px}
.sy-pd-price span{font-size:14px;font-weight:400;color:var(--gray);margin-left:6px}
.sy-pd-notes{margin-bottom:22px}
.sy-pd-notes li{padding:7px 0 7px 22px;position:relative;font-size:14px;color:var(--gray)}
.sy-pd-notes li::before{content:"";position:absolute;left:4px;top:14px;width:8px;height:8px;border-radius:50%;background:var(--brand)}
.sy-pd-btns{display:flex;gap:14px;margin-bottom:24px}
.sy-btn{display:inline-block;padding:12px 32px;border-radius:4px;border:1px solid var(--line);font-size:15px;transition:.2s;text-align:center}
.sy-btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.sy-btn-primary:hover{background:var(--brand-d)}
.sy-pd-serv{background:var(--bg);padding:14px 18px;border-radius:8px;font-size:13px;color:var(--gray)}
.sy-pd-detail{padding:36px 16px 50px;max-width:860px}
.sy-pd-detail h3{font-size:22px;font-weight:800;margin-bottom:18px;padding-left:12px;border-left:4px solid var(--brand)}
.sy-pd-detail-body p{margin-bottom:14px;text-align:justify}
.sy-pd-detail-imgs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:20px 0}
.sy-pd-detail-imgs img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.sy-pd-note{font-size:12px;color:#999}

/* 文本页 */
.sy-txtpage{max-width:900px}
.sy-txt-sec{margin-bottom:34px}
.sy-txt-sec h3{font-size:20px;font-weight:800;margin-bottom:12px;color:var(--brand);padding-left:12px;border-left:4px solid var(--gold)}
.sy-txt-sec p{text-align:justify;white-space:pre-line}

/* 资讯详情 */
.sy-newsdetail h1{font-size:24px;margin-bottom:10px}
.sy-news-meta{color:var(--gray);font-size:13px;margin-bottom:20px}
.sy-news-cover{max-width:680px;margin:0 auto 22px;border-radius:10px}
.sy-news-firm{margin-top:26px;padding-top:14px;border-top:1px dashed var(--line);font-size:12px;color:#999}

/* 搜索 */
.sy-searchbar{display:flex;gap:10px;max-width:560px;margin:0 auto 30px}
.sy-searchbar input{flex:1;padding:12px 16px;border:1px solid var(--line);border-radius:6px;font-size:15px;outline:none}
.sy-searchbar input:focus{border-color:var(--brand)}
.sy-searchbar button{background:var(--brand);color:#fff;border:none;padding:12px 30px;border-radius:6px;font-size:15px;cursor:pointer}
.sy-search-empty{text-align:center;color:var(--gray);padding:40px 0}

/* 购物车演示 */
.sy-cart-app{max-width:760px;margin:0 auto}
.sy-cart-empty{text-align:center;background:var(--bg);padding:60px 30px;border-radius:12px}
.sy-cart-empty h3{font-size:22px;margin-bottom:12px}
.sy-cart-empty p{color:var(--gray);margin-bottom:24px}

/* 404 */
.sy-404{text-align:center;padding:90px 16px}
.sy-404 h2{font-size:30px;margin-bottom:14px}
.sy-404 p{color:var(--gray);margin-bottom:30px}

/* 页脚 */
.sy-footer{background:#2c2520;color:#c9c0b8;margin-top:40px}
.sy-footer .sy-wrap{padding-top:46px;padding-bottom:26px}
.sy-foot-cols{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:40px;margin-bottom:30px}
.sy-foot-about p{font-size:13px;line-height:1.9;margin-top:14px;color:#a89f96}
.sy-foot-logo{height:44px;width:auto;margin-bottom:6px}
.sy-foot-col h4{color:#fff;font-size:16px;margin-bottom:16px}
.sy-foot-links{display:flex;flex-direction:column;gap:8px}
.sy-foot-links a{font-size:13px}
.sy-foot-links a:hover{color:#fff}
.sy-foot-col p{font-size:13px;margin-bottom:8px;color:#b3aaa1}
.sy-foot-icp{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;text-align:center;font-size:12px;color:#968c82;line-height:2}
.sy-foot-icp a{color:#c9a06a}
.sy-foot-icp a:hover{text-decoration:underline}

/* 响应式 */
@media (max-width:960px){
  .sy-catgrid{grid-template-columns:repeat(4,minmax(0,1fr))}
  .sy-pgrid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .sy-pd-main{grid-template-columns:1fr;gap:24px}
  .sy-pd-gallery{position:static}
  .sy-foot-cols{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .sy-nav{display:none}
  .sy-mnav-btn{display:block}
  .sy-catgrid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .sy-pgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sy-hero-slide img{height:300px}
  .sy-hero-cap h3{font-size:24px}
  .sy-hero-cap p{font-size:14px}
  .sy-hero-cap{left:6%;right:6%;max-width:none}
  .sy-serv-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sy-foot-cols{grid-template-columns:1fr}
  .sy-custom-in{flex-direction:column;text-align:center}
  .sy-custom-banner{background:url(../img/banner/banner-custom-m.webp) center/cover no-repeat}
  .sy-topbar-in{font-size:12px}
  .sy-pd-thumbs img{width:60px;height:60px}
}
@media (max-width:480px){
  .sy-catgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sy-pgrid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .sy-pcard-name{font-size:13px}
  .sy-pcard-price{font-size:15px}
  .sy-sec-head h2{font-size:22px}
}