/* goboprojector.cn — 设计系统（对标 Alibaba 店铺视觉）
   色板：藏青导航 #0E2A47 / 浅蓝店头渐变 / 橙色 CTA #FF6A00 / Hero 深灰绿 + 黄 #F7E733 / 链接蓝 #1F6FD6 */
:root {
  --navy: #0e2a47;
  --navy-2: #123354;
  --blue: #1f6fd6;
  --blue-light: #eaf3fc;
  --orange: #ff6a00;
  --orange-d: #e55f00;
  --yellow: #f7e733;
  --ink: #22272e;
  --ink-2: #5b6672;
  --line: #e3e8ee;
  --bg: #f6f8fb;
  --card: #ffffff;
  --green: #1a9c5b;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(14, 42, 71, .08), 0 4px 14px rgba(14, 42, 71, .06);
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.55; font-size: 15px; }
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.hidden { display: none !important; }

/* ===== 顶部店头 ===== */
.topbar { background: linear-gradient(90deg, #0b6ec9 0%, #0e2a47 100%); color: #fff; font-size: 13px; }
.topbar .wrap { display: flex; gap: 18px; align-items: center; justify-content: space-between; min-height: 34px; }
.topbar a { color: #fff; }
.topbar .pill { background: rgba(255, 255, 255, .16); border-radius: 20px; padding: 2px 10px; }
.header { background: linear-gradient(180deg, #eaf3fc 0%, #ffffff 100%); border-bottom: 1px solid var(--line); }
.header .wrap { display: flex; align-items: center; gap: 22px; padding-top: 16px; padding-bottom: 16px; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo .word { font-size: 30px; font-weight: 800; color: var(--blue); letter-spacing: 1px; font-style: italic; }
.logo .tag { background: var(--navy); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: 2px; padding: 4px 10px; border-radius: 4px; }
.company-line { font-size: 13px; color: var(--ink-2); }
.company-line b { color: var(--navy); font-size: 15px; }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.search { display: flex; border: 2px solid var(--orange); border-radius: 6px; overflow: hidden; }
.search input { border: 0; padding: 8px 12px; width: 240px; font-size: 14px; outline: none; }
.search button { background: var(--orange); color: #fff; border: 0; padding: 0 18px; cursor: pointer; font-weight: 700; }
.search button:hover { background: var(--orange-d); }

/* 语言切换 */
.lang-select { border: 1px solid var(--line); border-radius: 6px; background: #fff; padding: 8px 10px; font-size: 14px; color: var(--ink); cursor: pointer; }

/* 购物车按钮 */
.cart-btn { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 6px; padding: 8px 14px; cursor: pointer; font-size: 14px; font-weight: 600; color: var(--navy); }
.cart-btn:hover { border-color: var(--blue); color: var(--blue); }
.cart-btn .n { position: absolute; top: -8px; right: -8px; background: var(--orange); color: #fff; border-radius: 50%; min-width: 20px; height: 20px; line-height: 20px; text-align: center; font-size: 12px; font-weight: 700; }

/* ===== 导航条 ===== */
.nav { background: var(--navy); }
.nav .wrap { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav a { color: #fff; padding: 13px 18px; font-weight: 600; font-size: 14.5px; display: inline-block; }
.nav a:hover, .nav a.active { background: var(--navy-2); text-decoration: none; }
.nav .nav-cta { margin-left: auto; background: var(--orange); border-radius: 4px; }
.nav .nav-cta:hover { background: var(--orange-d); }

/* ===== Hero ===== */
.hero { background: linear-gradient(115deg, #24352c 0%, #2e4437 55%, #1c2a22 100%); color: #fff; position: relative; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 30px; align-items: center; padding-top: 54px; padding-bottom: 54px; }
.hero h1 { font-size: 46px; line-height: 1.12; font-weight: 800; color: var(--yellow); text-transform: uppercase; letter-spacing: 1px; }
.hero .sub { background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .25); display: inline-block; padding: 8px 18px; border-radius: 30px; font-weight: 700; letter-spacing: 2.5px; margin: 18px 0; font-size: 15px; }
.hero p.lead { color: #d7e2dc; max-width: 520px; margin-bottom: 22px; }
.hero .ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-block; border-radius: 30px; padding: 12px 30px; font-weight: 800; font-size: 16px; cursor: pointer; border: 0; text-align: center; }
.btn:hover { text-decoration: none; }
.btn-yellow { background: var(--yellow); color: #1c2a22; }
.btn-yellow:hover { filter: brightness(1.05); }
.btn-orange { background: var(--orange); color: #fff; }
.btn-orange:hover { background: var(--orange-d); }
.btn-ghost { background: transparent; color: #fff; border: 2px solid rgba(255, 255, 255, .6); }
.btn-ghost:hover { border-color: #fff; }
.hero .media img { border-radius: var(--radius); box-shadow: 0 18px 40px rgba(0, 0, 0, .4); }

/* 四大规则徽章 */
.rules { margin-top: 26px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; max-width: 560px; }
.rule { display: flex; gap: 10px; align-items: center; background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .18); border-radius: 8px; padding: 10px 12px; font-size: 13.5px; font-weight: 600; }
.rule .ico { width: 34px; height: 34px; border-radius: 8px; background: var(--yellow); color: #1c2a22; display: flex; align-items: center; justify-content: center; font-size: 17px; flex: none; }
.rule small { display: block; font-weight: 400; color: #c3cfc8; font-size: 12px; }

/* 认证行 */
.certs { background: var(--navy); color: #cbd7e2; font-size: 13px; }
.certs .wrap { display: flex; gap: 26px; align-items: center; justify-content: center; padding-top: 12px; padding-bottom: 12px; flex-wrap: wrap; }
.certs b { color: #fff; letter-spacing: 1px; }

/* ===== 区块通用 ===== */
.section { padding: 46px 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; margin-bottom: 22px; flex-wrap: wrap; }
.section-head h2 { font-size: 26px; color: var(--navy); }
.section-head .more { font-size: 14px; font-weight: 600; }

/* 产品卡片 */
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 980px) { .grid { grid-template-columns: repeat(3, 1fr); } .hero .wrap { grid-template-columns: 1fr; } }
@media (max-width: 680px) { .grid { grid-template-columns: repeat(2, 1fr); } .hero h1 { font-size: 32px; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column; transition: transform .15s ease, box-shadow .15s ease; position: relative; }
.card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(14, 42, 71, .14); }
.card .imgbox { position: relative; aspect-ratio: 1/1; background: #fff; overflow: hidden; }
.card .imgbox img { width: 100%; height: 100%; object-fit: contain; padding: 12px; }
.card .badges { position: absolute; top: 10px; left: 10px; display: flex; flex-direction: column; gap: 6px; }
.bdg { font-size: 11px; font-weight: 700; padding: 3px 8px; border-radius: 4px; color: #fff; width: max-content; }
.bdg-stock { background: var(--green); }
.bdg-moq { background: var(--navy); }
.bdg-ship { background: var(--blue); }
.card .body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card .title { font-size: 13.5px; line-height: 1.45; color: var(--navy); font-weight: 600; min-height: 58px; }
.card .title:hover { color: var(--blue); }
.card .price { font-size: 19px; font-weight: 800; color: var(--orange); }
.card .price small { color: var(--ink-2); font-weight: 400; font-size: 11.5px; }
.card .meta { font-size: 12px; color: var(--ink-2); }
.card .actions { margin-top: auto; display: flex; gap: 8px; }
.card .actions .btn { flex: 1; padding: 9px 8px; font-size: 13.5px; border-radius: 6px; }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--navy-2); }
.btn-line { background: #fff; border: 1.5px solid var(--navy); color: var(--navy); }
.btn-line:hover { border-color: var(--blue); color: var(--blue); }

/* Why us */
.why { background: #fff; border-top: 1px solid var(--line); }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 900px) { .why-grid { grid-template-columns: repeat(2, 1fr); } }
.why-card { text-align: center; padding: 26px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--blue-light); }
.why-card .ico { font-size: 34px; }
.why-card h3 { color: var(--navy); font-size: 16.5px; margin: 10px 0 6px; }
.why-card p { font-size: 13.5px; color: var(--ink-2); }

/* OEM banner */
.oem { background: linear-gradient(100deg, var(--navy) 0%, #14508c 100%); color: #fff; border-radius: 14px; padding: 40px; display: flex; gap: 26px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.oem h2 { font-size: 26px; margin-bottom: 8px; }
.oem p { color: #c9d8e6; max-width: 640px; }
.oem .btn { flex: none; }

/* 分类块 */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 900px) { .cat-grid { grid-template-columns: repeat(2, 1fr); } }
.cat-card { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: #fff; border: 1px solid var(--line); }
.cat-card img { aspect-ratio: 16/9; object-fit: cover; width: 100%; }
.cat-card .cap { padding: 12px 14px; font-weight: 700; color: var(--navy); }
.cat-card .cap small { display: block; color: var(--ink-2); font-weight: 400; }

/* ===== 产品列表页 ===== */
.list-layout { display: grid; grid-template-columns: 250px 1fr; gap: 24px; align-items: start; }
@media (max-width: 900px) { .list-layout { grid-template-columns: 1fr; } }
.side { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.side h3 { background: var(--blue-light); color: var(--navy); font-size: 15px; padding: 12px 16px; }
.side a { display: block; padding: 10px 16px; font-size: 14px; color: var(--ink); border-bottom: 1px solid var(--line); }
.side a:hover, .side a.active { background: var(--blue-light); color: var(--blue); text-decoration: none; font-weight: 600; }
.toolbar { display: flex; gap: 12px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.toolbar select, .toolbar input { padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; font-size: 14px; background: #fff; }
.count { color: var(--ink-2); font-size: 13.5px; }

/* ===== 详情页 ===== */
.detail { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 4fr); gap: 34px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
@media (max-width: 900px) { .detail { grid-template-columns: 1fr; } }
.detail .gallery { display: flex; flex-direction: column; gap: 12px; }
.detail .g-main { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; aspect-ratio: 1/1; }
.detail .g-main img { width: 100%; height: 100%; object-fit: contain; padding: 14px; }
.detail .g-thumbs { display: flex; gap: 8px; flex-wrap: wrap; }
.detail .g-thumb { width: 64px; height: 64px; border: 1px solid var(--line); border-radius: 8px; background: #fff; padding: 4px; cursor: pointer; overflow: hidden; transition: border-color .15s ease; }
.detail .g-thumb img { width: 100%; height: 100%; object-fit: contain; }
.detail .g-thumb.active { border-color: var(--blue); box-shadow: 0 0 0 2px rgba(37, 99, 235, .18); }
.pd-desc { color: var(--ink-2); font-size: 14px; line-height: 1.65; margin: 14px 0 4px; }
.pager { display: flex; gap: 6px; justify-content: center; margin: 26px 0 8px; flex-wrap: wrap; }
.pager .pg { min-width: 34px; height: 34px; padding: 0 8px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--navy); font-size: 13.5px; text-decoration: none; }
.pager .pg:hover { border-color: var(--blue); }
.pager .pg.active { background: var(--navy); color: #fff; border-color: var(--navy); }
.pager .pg.disabled { opacity: .4; pointer-events: none; }
.pager .pg.ell { border: none; background: none; pointer-events: none; }
.detail h1 { font-size: 22px; line-height: 1.4; color: var(--navy); }
.detail .price-line { font-size: 30px; font-weight: 800; color: var(--orange); margin: 14px 0 4px; }
.detail .price-line small { font-size: 13px; color: var(--ink-2); font-weight: 400; }
.tagrow { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }
.qty { display: inline-flex; border: 1.5px solid var(--line); border-radius: 6px; overflow: hidden; }
.qty button { width: 38px; border: 0; background: var(--blue-light); font-size: 18px; cursor: pointer; color: var(--navy); }
.qty input { width: 60px; text-align: center; border: 0; border-left: 1.5px solid var(--line); border-right: 1.5px solid var(--line); font-size: 15px; padding: 10px 0; outline: none; }
.detail .ctas { display: flex; gap: 12px; margin: 18px 0; flex-wrap: wrap; }
.detail .ctas .btn { flex: 1; min-width: 170px; }
.spec { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 13.5px; }
.spec td { border: 1px solid var(--line); padding: 8px 12px; }
.spec td:first-child { background: var(--blue-light); color: var(--navy); font-weight: 600; width: 34%; }
.trust { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 14px; font-size: 13px; color: var(--ink-2); }
.trust span { background: var(--bg); border: 1px solid var(--line); padding: 6px 10px; border-radius: 6px; }

/* ===== FAQ ===== */
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; }
.faq-item summary { cursor: pointer; padding: 16px 18px; font-weight: 700; color: var(--navy); list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::after { content: "+"; font-size: 20px; color: var(--orange); }
.faq-item[open] summary::after { content: "–"; }
.faq-item .a { padding: 0 18px 16px; color: var(--ink-2); }

/* ===== 表单 ===== */
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 680px) { .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 600; color: var(--navy); }
.field input, .field select, .field textarea { padding: 10px 12px; border: 1px solid var(--line); border-radius: 6px; font-size: 14px; font-family: var(--font); outline: none; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--blue); }
.form-note { font-size: 12.5px; color: var(--ink-2); }
.form-ok { background: #e8f7ef; border: 1px solid var(--green); color: #116a3d; padding: 14px; border-radius: 8px; margin-top: 12px; }

/* ===== 购物车抽屉 ===== */
.drawer-mask { position: fixed; inset: 0; background: rgba(10, 20, 30, .45); z-index: 90; opacity: 0; pointer-events: none; transition: opacity .2s; }
.drawer-mask.open { opacity: 1; pointer-events: auto; }
.drawer { position: fixed; top: 0; right: 0; height: 100%; width: min(400px, 92vw); background: #fff; z-index: 95; box-shadow: -8px 0 30px rgba(0, 0, 0, .2); transform: translateX(105%); transition: transform .25s ease; display: flex; flex-direction: column; }
[dir="rtl"] .drawer { right: auto; left: 0; transform: translateX(-105%); }
.drawer.open { transform: translateX(0); }
.drawer .head { display: flex; justify-content: space-between; align-items: center; padding: 16px 18px; background: var(--navy); color: #fff; font-weight: 700; }
.drawer .head button { background: none; border: 0; color: #fff; font-size: 22px; cursor: pointer; }
.drawer .items { flex: 1; overflow: auto; padding: 14px 18px; display: flex; flex-direction: column; gap: 12px; }
.cart-it { display: grid; grid-template-columns: 64px 1fr auto; gap: 10px; align-items: center; border-bottom: 1px solid var(--line); padding-bottom: 10px; }
.cart-it img { width: 64px; height: 64px; object-fit: contain; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.cart-it .t { font-size: 12.5px; color: var(--navy); font-weight: 600; line-height: 1.35; }
.cart-it .p { color: var(--orange); font-weight: 800; font-size: 14px; }
.cart-it .rm { background: none; border: 0; color: #b33; cursor: pointer; font-size: 17px; }
.cart-it .qty-row { display: flex; align-items: center; gap: 8px; margin-top: 4px; }
.cart-it .qty-sm { display: inline-flex; border: 1px solid var(--line); border-radius: 5px; overflow: hidden; }
.cart-it .qty-sm button { width: 24px; height: 24px; border: 0; background: var(--blue-light); cursor: pointer; color: var(--navy); }
.cart-it .qty-sm input { width: 34px; text-align: center; border: 0; font-size: 13px; }
.drawer .foot { border-top: 1px solid var(--line); padding: 16px 18px; }
.drawer .total { display: flex; justify-content: space-between; font-size: 16px; font-weight: 800; margin-bottom: 12px; }
.drawer .total b { color: var(--orange); }

/* ===== checkout ===== */
.checkout-layout { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 26px; align-items: start; }
@media (max-width: 900px) { .checkout-layout { grid-template-columns: 1fr; } }
.ck-table { width: 100%; border-collapse: collapse; font-size: 14px; background: #fff; }
.ck-table th, .ck-table td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; }
.ck-table th { background: var(--blue-light); color: var(--navy); }
.ck-table img { width: 52px; height: 52px; object-fit: contain; }
.pay-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.pay-total { font-size: 22px; font-weight: 800; margin-bottom: 14px; }
.pay-total b { color: var(--orange); }
.pay-note { font-size: 12.5px; color: var(--ink-2); margin-top: 12px; }
.pay-disabled { background: #fff8ec; border: 1px dashed var(--orange); padding: 14px; border-radius: 8px; font-size: 13.5px; color: #8a5300; margin-top: 10px; }

/* ===== 页脚 ===== */
footer { background: var(--navy); color: #b9c7d4; margin-top: 40px; font-size: 13.5px; }
footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 30px; padding: 40px 0 26px; }
@media (max-width: 860px) { footer .cols { grid-template-columns: 1fr 1fr; } }
footer h4 { color: #fff; font-size: 15px; margin-bottom: 10px; }
footer a { color: #b9c7d4; display: block; padding: 3px 0; }
footer a:hover { color: #fff; }
footer .legal { border-top: 1px solid rgba(255, 255, 255, .12); padding: 14px 0; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 12.5px; }

/* 面包屑 */
.crumb { font-size: 13px; color: var(--ink-2); padding: 14px 0 0; }
.crumb a { color: var(--ink-2); }

/* 占位图 */
.ph-img { background: linear-gradient(135deg, var(--blue-light), #d7e6f7); display: flex; align-items: center; justify-content: center; color: var(--blue); font-weight: 700; font-size: 13px; aspect-ratio: 1/1; text-align: center; padding: 10px; }