/* =========================================================
   华电低压在线选型 · 共享设计系统
   Design Tokens 与 index.html 完全一致（取自客户 logo）
   var(--brand) 主蓝 / var(--accent) 亮青
   ========================================================= */
:root{
  --brand:#0055B1;
  --brand-dark:#0C3390;
  --brand-mid:#2A4A9D;
  --accent:#00A0E8;
  --accent-2:#45B8E4;
  --bg:#F4F8FD;
  --card:#FFFFFF;
  --line:#E3EAF4;
  --txt:#1E2A3A;
  --txt-2:#5A6B80;
  --txt-3:#8B99AC;
  --ok:#269C22;
  --warn:#D72C25;
  --radius:14px;
  --shadow:0 6px 24px rgba(var(--brand-dark-rgb),.08);
  --shadow-lg:0 16px 48px rgba(var(--brand-dark-rgb),.16);
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --mono:Menlo,Consolas,"Courier New",monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--txt);background:var(--bg);-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;outline:none}
ul{list-style:none}
.wrap{max-width:1280px;margin:0 auto;padding:0 24px}

/* ============ 顶部工具条 ============ */
.topbar{background:var(--brand-dark);color:var(--topbar-txt);font-size:12px}
.topbar .wrap{height:34px;display:flex;align-items:center;justify-content:space-between}
.topbar .lang button{color:var(--topbar-txt);padding:0 6px;line-height:34px}
.topbar .lang button.on{color:#fff;font-weight:600}
.topbar .links a{margin-left:18px;color:var(--topbar-txt)}
.topbar .links a:hover{color:#fff}

/* ============ 主导航 ============ */
.header{position:sticky;top:0;z-index:100;background:linear-gradient(90deg,var(--brand-dark) 0%,var(--brand-mid) 60%,var(--brand) 100%);box-shadow:0 2px 12px rgba(var(--brand-dark-rgb),.25)}
.header .wrap{height:68px;display:flex;align-items:center;gap:32px}
.logo img{height:30px;width:auto}
.nav{display:flex;gap:4px;flex:1}
.nav a{color:var(--nav-txt);font-size:15px;padding:8px 14px;border-radius:8px;transition:.2s}
.nav a:hover{color:#fff;background:rgba(255,255,255,.12)}
.nav a.active{color:#fff;font-weight:600;background:rgba(255,255,255,.16)}
.header-act{display:flex;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:10px;font-size:14px;padding:0 18px;height:38px;transition:.2s;white-space:nowrap}
.btn-ghost{color:#fff;border:1px solid rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.14)}
.btn-light{background:#fff;color:var(--brand);font-weight:600}
.btn-light:hover{background:var(--tint)}
.btn-primary{background:var(--brand);color:#fff;font-weight:600}
.btn-primary:hover{background:var(--brand-hover)}
.btn-accent{background:var(--accent-deep);color:#fff;font-weight:600}
.btn-accent:hover{background:var(--accent-deep-hover)}
.btn-outline{border:1px solid var(--line);color:var(--txt-2);background:#fff}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);background:var(--tint)}
.btn-sm{height:34px;padding:0 13px;font-size:13px;border-radius:8px}
.btn-lg{height:46px;padding:0 26px;font-size:15px}
.btn-block{width:100%}
.btn[disabled],.btn[disabled]:hover{background:var(--state-disabled-bg);color:var(--state-disabled-txt);border-color:var(--state-disabled-bd);opacity:1;cursor:not-allowed;box-shadow:none}
.cart-btn{position:relative}
.cart-badge{position:absolute;top:-6px;right:-8px;min-width:18px;height:18px;border-radius:9px;background:var(--warn);color:#fff;font-size:11px;display:flex;align-items:center;justify-content:center;padding:0 5px;font-weight:700}
.burger{display:none;color:#fff;padding:8px}

/* ============ 页面头（子页） ============ */
.pagehero{background:linear-gradient(135deg,var(--brand-dark) 0%,var(--brand-hero) 55%,var(--brand-mid) 100%);color:#fff;position:relative;overflow:hidden}
.pagehero::after{content:"";position:absolute;width:420px;height:420px;right:-120px;top:-200px;border-radius:50%;background:radial-gradient(circle,rgba(var(--accent-rgb),.32),transparent 70%)}
.pagehero .wrap{padding:26px 24px 30px;position:relative;z-index:1}
.crumb{font-size:13px;color:var(--on-dark-3);margin-bottom:12px}
.crumb a:hover{color:#fff}
.crumb b{color:#fff;font-weight:500}
.pagehero h1{font-size:26px;font-weight:700;letter-spacing:.5px}
.pagehero .sub{margin-top:8px;color:var(--on-dark-2);font-size:14px}

/* ============ 主区域容器 ============ */
.page{flex:1;padding:26px 0 60px}

/* ============ 面板 / 卡片 ============ */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);min-width:0}
.panel-pad{padding:22px 24px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 24px 0;flex-wrap:wrap}
.panel-head h2{font-size:18px;font-weight:700;display:flex;align-items:center;gap:9px}
.panel-head h2::before{content:"";width:4px;height:16px;border-radius:2px;background:linear-gradient(180deg,var(--accent),var(--brand))}
.panel-head .hint{font-size:12.5px;color:var(--txt-3)}
.sec{margin-top:22px}
.sec-title{font-size:16px;font-weight:700;margin:0 0 14px;display:flex;align-items:center;gap:9px}
.sec-title::before{content:"";width:4px;height:15px;border-radius:2px;background:linear-gradient(180deg,var(--accent),var(--brand))}
.sec-title small{font-weight:400;color:var(--txt-3);font-size:12.5px}

/* ============ 详情主区 ============ */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.detail-grid>*{min-width:0}
.gallery{position:sticky;top:96px}
/* ============ 详情图廊（增强：切换/懒加载/占位/手势） ============ */
.gallery-stage{position:relative;aspect-ratio:1/1;border-radius:var(--radius);overflow:hidden;
  background:radial-gradient(circle at 50% 42%,#fff 0%,var(--surface-soft) 55%,var(--tint-5) 100%);
  border:1px solid var(--line);cursor:pointer;user-select:none;-webkit-touch-callout:none;touch-action:pan-y}
.gallery-stage:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.g-stage-img{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.g-stage-img img{width:100%;height:100%;object-fit:contain;padding:8%;
  transition:opacity .28s ease, transform .12s ease;will-change:transform,opacity}
/* 加载占位骨架 */
.g-skeleton{position:absolute;inset:0;display:none;align-items:center;justify-content:center;z-index:1;
  background:linear-gradient(100deg,var(--surface-soft) 30%,var(--surface-2) 50%,var(--surface-soft) 70%);
  background-size:200% 100%;animation:gShimmer 1.2s linear infinite}
.gallery-stage.loading .g-skeleton{display:flex}
.g-skeleton::after{content:"";width:36%;height:36%;border-radius:16px;background:var(--line);opacity:.55}
@keyframes gShimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
/* 图片缺失兜底 */
.g-ph{position:absolute;inset:0;display:none;align-items:center;justify-content:center;z-index:1}
.gallery-stage.missing .g-ph{display:flex}
.g-ph img{width:62%;opacity:.5}
/* 左右切换箭头 */
.g-arrow{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:rgba(255,255,255,.85);color:var(--txt);font-size:22px;line-height:1;
  display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;transition:.2s;z-index:3;
  box-shadow:var(--shadow-sm);backdrop-filter:blur(2px)}
.gallery-stage:hover .g-arrow{opacity:1}
.g-arrow:hover{background:#fff;color:var(--brand);border-color:var(--brand)}
.g-arrow:active{transform:translateY(-50%) scale(.92)}
.g-prev{left:12px}.g-next{right:12px}
.g-arrow[hidden]{display:none}
/* 计数 / 提示 */
.g-counter{position:absolute;right:14px;bottom:14px;background:rgba(20,30,45,.55);color:#fff;
  font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;z-index:3;letter-spacing:.5px;font-variant-numeric:tabular-nums}
.g-hint{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);background:rgba(20,30,45,.5);
  color:#fff;font-size:11.5px;padding:4px 12px;border-radius:999px;z-index:2;pointer-events:none;
  opacity:0;transition:.2s;white-space:nowrap}
.gallery-stage:hover .g-hint{opacity:1}
/* 缩略图（可横向滚动 / 懒加载骨架） */
.thumbs{display:flex;gap:10px;margin-top:12px;overflow-x:auto;padding-bottom:4px;scroll-behavior:smooth;
  -webkit-overflow-scrolling:touch;scrollbar-width:thin}
.thumbs::-webkit-scrollbar{height:6px}
.thumbs::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.thumbs .t{flex:0 0 auto;width:64px;height:64px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface-soft);overflow:hidden;cursor:pointer;display:flex;align-items:center;justify-content:center;
  position:relative;transition:border-color .15s,box-shadow .15s}
.thumbs .t img{width:100%;height:100%;object-fit:contain;padding:6px}
.thumbs .t .t-lazy{position:absolute;inset:0;background:linear-gradient(100deg,var(--surface-soft),var(--surface-2),var(--surface-soft));
  background-size:200% 100%;animation:gShimmer 1.2s linear infinite}
.thumbs .t.loaded .t-lazy{display:none}
.thumbs .t.on{border-color:var(--brand);box-shadow:0 0 0 2px rgba(var(--brand-rgb),.15)}
/* 移动端大图灯箱 */
.g-lightbox{position:fixed;inset:0;z-index:999;background:rgba(10,14,20,.92);display:none;
  align-items:center;justify-content:center;flex-direction:column;touch-action:none}
.g-lightbox.on{display:flex}
.g-lightbox img{max-width:92vw;max-height:82vh;object-fit:contain;transition:transform .08s ease;
  will-change:transform;user-select:none;-webkit-user-drag:none}
.g-lb-close{position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:50%;border:none;
  background:rgba(255,255,255,.15);color:#fff;font-size:20px;cursor:pointer;z-index:2}
.g-lb-close:hover{background:rgba(255,255,255,.28)}
.g-lb-hint{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.7);
  font-size:12px;white-space:nowrap}
@media (hover:none){ .g-arrow{opacity:1} .g-hint{display:none} .gallery-stage{cursor:pointer} }

.info-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;gap:5px;background:var(--tint);color:var(--brand);font-size:12.5px;font-weight:600;padding:4px 11px;border-radius:999px;border:1px solid var(--chip-bd)}
.pill.gray{background:var(--surface-2);color:var(--txt-2);border-color:var(--line)}
.detail-h1{font-size:26px;font-weight:700;margin:12px 0 6px;line-height:1.3}
.detail-model{font-family:var(--mono);font-size:14px;color:var(--accent-deep);font-weight:600;letter-spacing:.4px}
.detail-intro{margin-top:12px;color:var(--txt-2);font-size:14px;line-height:1.85}
.kv-line{display:flex;gap:8px;align-items:baseline;margin-top:12px;font-size:13.5px;color:var(--txt-2);flex-wrap:wrap}
.kv-line b{font-family:var(--mono);color:var(--txt);font-size:14px}
.link{color:var(--brand);font-size:13px;font-weight:600;cursor:pointer}
.link:hover{text-decoration:underline}

.price-box{margin-top:18px;background:linear-gradient(135deg,var(--hover-tint-2),var(--tint-2));border:1px solid var(--tint-10);border-radius:12px;padding:16px 18px;display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}
.price-box .lab{font-size:13px;color:var(--txt-2)}
.price-box .val{font-size:24px;font-weight:700;color:var(--brand);margin-top:2px}
.price-box .val small{font-size:12px;font-weight:400;color:var(--txt-3);display:block;margin-top:2px}
.price-box .acts{display:flex;gap:10px;flex-wrap:wrap}

/* 选型面板 */
.sel-list{margin-top:4px}
/* 选型模块标题（本体选型 / 部件清单选型） */
.sel-mod-title{display:flex;align-items:center;gap:8px;margin:22px 0 14px;padding:9px 14px;font-size:14px;font-weight:700;
  color:var(--brand);background:var(--tint-3);border-left:4px solid var(--brand);border-radius:8px}
.sel-mod-title:first-child{margin-top:0}
/* 二级参数组（随一级联动展示） */
.opt-group.sub{margin:-8px 0 18px 14px;padding:12px 14px 2px;background:var(--surface-soft);
  border:1px dashed var(--line);border-radius:10px}
/* 三级及更深的下级参数：逐级缩进，便于看出层级关系 */
.opt-group.sub[data-depth="3"]{margin-left:28px}
.opt-group.sub[data-depth="4"]{margin-left:42px}
.opt-group.sub[data-depth="5"]{margin-left:56px}
.opt-group.sub[data-depth="6"]{margin-left:70px}
.opt-group.sub .lab{font-size:13px;color:var(--txt-2);font-weight:600}
.sub-tag{font-size:11px;font-weight:400;color:var(--brand);background:var(--tint-3);
  border:1px solid var(--tint-bd-2);border-radius:999px;padding:1px 8px;line-height:1.5}
.opt-group{margin-bottom:20px}
.opt-group .lab{font-size:14px;color:var(--txt);font-weight:600;margin-bottom:10px;display:flex;align-items:center;gap:6px}
.opt-group .lab i{font-style:normal;color:var(--warn);font-weight:400;font-size:13px}
.opt-group .lab small{font-weight:400;color:var(--txt-3);font-size:12px}
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chips button{border:1px solid var(--line);background:#fff;color:var(--txt-2);font-size:13px;padding:8px 16px;border-radius:9px;transition:.15s;line-height:1.3}
.chips button:hover{border-color:var(--brand);color:var(--brand)}
.chips button.on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;box-shadow:0 3px 10px rgba(var(--brand-rgb),.22)}
.chips button small{display:block;font-size:11px;opacity:.75;margin-top:1px;font-weight:400}

/* 实时结果 */
.result-box{background:var(--tint-3);border:1px dashed var(--tint-bd-2);border-radius:12px;padding:16px 18px;margin:4px 0 0;font-size:13px;color:var(--txt-2);line-height:2.05}
.result-box .row{display:flex;gap:10px;flex-wrap:wrap;align-items:baseline}
.result-box .row span:first-child{min-width:76px;color:var(--txt-3)}
.result-box b{color:var(--brand);font-family:var(--mono);font-size:13.5px;letter-spacing:.3px}
.result-box .qty-row{margin-top:8px;display:flex;align-items:center;gap:12px}

.stepper{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#fff}
.stepper button{width:34px;height:34px;font-size:16px;color:var(--txt-2);background:var(--surface-hover)}
.stepper button:hover{color:var(--brand);background:var(--line-soft-4)}
.stepper input{width:52px;height:34px;border:none;text-align:center;font-size:14px;font-weight:600;color:var(--txt);background:#fff}
.stepper.sm button{width:28px;height:28px;font-size:14px}
.stepper.sm input{width:40px;height:28px;font-size:13px}

/* ============ 表格 ============ */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;-webkit-overflow-scrolling:touch;max-width:100%}
table.tbl{width:100%;border-collapse:collapse;font-size:13.5px;min-width:520px}
table.tbl th,table.tbl td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line-soft);vertical-align:top}
table.tbl thead th{background:var(--bg);color:var(--brand);font-weight:700;font-size:13px;white-space:nowrap;border-bottom:1px solid var(--line)}
table.tbl tbody tr:last-child td{border-bottom:none}
table.tbl tbody tr:hover{background:var(--surface-hover)}
table.tbl td.k{color:var(--txt-2);width:34%;font-weight:500}
table.tbl td.v{color:var(--txt);font-weight:600}
table.tbl.cmp td:first-child,table.tbl.cmp th:first-child{font-weight:700;color:var(--brand)}
table.tbl.cmp td{white-space:nowrap}
.tbl-note{font-size:12px;color:var(--txt-3);margin-top:10px;line-height:1.7}

/* ============ 产品资料 / 文档 ============ */
.doc-group{border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:14px}
.doc-group:last-child{margin-bottom:0}
.doc-group .dg-head{padding:13px 18px;background:var(--surface-alt);font-size:14px;font-weight:600;color:var(--txt);display:flex;justify-content:space-between;align-items:center}
.doc-group .dg-head span{font-size:12.5px;color:var(--txt-3);font-weight:400}
.doc-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 18px;border-top:1px solid var(--line-soft);flex-wrap:wrap}
.doc-row .dn{font-size:13.5px;color:var(--txt);display:flex;align-items:center;gap:9px;min-width:0}
.doc-row .dn svg{flex-shrink:0;color:var(--warn)}
.doc-row .dn em{font-style:normal;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.doc-row .dn .dm{flex-shrink:0;font-size:11.5px;color:var(--txt-3);background:var(--surface-alt);border:1px solid var(--line);border-radius:5px;padding:2px 7px;white-space:nowrap}
.doc-row .da{display:flex;gap:8px;flex-shrink:0}
.doc-empty{padding:26px 18px;text-align:center;color:var(--txt-3);font-size:13px;border:1px dashed var(--line);border-radius:12px}

/* ============ Tabs ============ */
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:18px;overflow-x:auto}
.tabs button{padding:12px 18px;font-size:14px;color:var(--txt-2);border-bottom:2px solid transparent;white-space:nowrap;transition:.15s}
.tabs button:hover{color:var(--brand)}
.tabs button.on{color:var(--brand);font-weight:700;border-bottom-color:var(--brand)}

/* ============ 右侧浮动工具条 ============ */
.rail{position:fixed;right:calc(50% - 660px);bottom:120px;z-index:80;display:flex;flex-direction:column;gap:1px;border-radius:14px;overflow:visible;box-shadow:var(--shadow-lg);border:1px solid var(--line);background:#fff}
.rail button{width:64px;padding:12px 4px;display:flex;flex-direction:column;align-items:center;gap:5px;font-size:11px;color:var(--txt-2);background:#fff;transition:.15s}
.rail .rail-item:first-child button{border-radius:13px 13px 4px 4px}
.rail .rail-item:last-child button{border-radius:4px 4px 13px 13px}
.rail .rail-item:only-child button{border-radius:13px}
.rail button:hover{background:var(--hover-tint);color:var(--brand)}
.rail button svg{width:20px;height:20px}
/* 客服按钮悬浮电话浮层（无需点击） */
.rail-item{position:relative;display:flex}
.rail-pop{position:absolute;right:74px;top:50%;transform:translateY(-50%) translateX(8px);min-width:176px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);padding:12px 16px;opacity:0;visibility:hidden;transition:.2s;z-index:2;white-space:nowrap}
.rail-pop::after{content:"";position:absolute;right:-4.5px;top:50%;width:8px;height:8px;background:#fff;border-top:1px solid var(--line);border-right:1px solid var(--line);transform:translateY(-50%) rotate(45deg)}
.rail-item:hover .rail-pop{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}
.rail-pop .rp-t{font-size:12px;color:var(--txt-3)}
.rail-pop .rp-num{font-size:17px;font-weight:700;color:var(--brand);margin:3px 0;letter-spacing:.3px}
.rail-pop .rp-s{font-size:12px;color:var(--txt-2)}

/* ============ 会员标识徽章（个人中心） ============ */
.mem-badge{display:inline-flex;align-items:center;gap:4px;margin-left:10px;padding:3px 12px;border-radius:999px;font-size:12px;font-weight:700;vertical-align:2px;line-height:1.5}
.mem-badge.vip{background:linear-gradient(135deg,#F7C948,#E0A02A);color:#5A3B00;box-shadow:0 2px 8px rgba(224,160,42,.35)}
.mem-badge.normal{background:#EDF4FC;color:#2A5C8F;border:1px solid #CBDDF3}

/* ============ 参数对比表：行删除 ============ */
.tbl.cmp .op-th{width:60px;text-align:center}
.tbl.cmp .op-td{text-align:center}
.row-del{width:26px;height:26px;border-radius:8px;border:1px solid var(--line);background:#fff;color:var(--txt-3);cursor:pointer;transition:.15s;font-size:12px;line-height:1;display:inline-flex;align-items:center;justify-content:center}
.row-del:hover{color:#D9433B;border-color:#F0B7B2;background:#FDF3F2}
.cmp-empty{text-align:center;color:var(--txt-3);font-size:13px;padding:20px 0}

@media (max-width:1340px){.rail{right:12px;bottom:96px}}

/* ============ 吸底操作条 ============ */
.actionbar{position:sticky;bottom:0;z-index:70;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-top:1px solid var(--line);box-shadow:0 -6px 24px rgba(var(--brand-dark-rgb),.08);margin-top:26px}
.actionbar .inner{max-width:1280px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.actionbar .sum{font-size:13px;color:var(--txt-2)}
.actionbar .sum b{color:var(--brand);font-size:16px;margin:0 3px}
.actionbar .acts{display:flex;gap:10px;flex-wrap:wrap}

/* ============ 清单 / 购物车 ============ */
.cart-list{display:flex;flex-direction:column;gap:14px}
.cart-group{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.cart-ghead{display:flex;align-items:center;gap:10px;padding:13px 18px;border-bottom:1px solid var(--line-soft);font-size:14px;font-weight:600}
.cart-ghead .ico{width:22px;height:22px;border-radius:6px;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:700}
.c-item{display:flex;gap:14px;padding:16px 18px;border-top:1px solid var(--line-soft-2);align-items:center}
.c-item:first-of-type{border-top:none}
.check{width:20px;height:20px;border:1.5px solid var(--gray-4);border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;cursor:pointer;background:#fff;transition:.15s}
.check.on{background:var(--brand);border-color:var(--brand)}
.check.on::after{content:"";width:9px;height:5px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg) translate(1px,-1px)}
.c-item img{width:84px;height:84px;border-radius:10px;object-fit:contain;background:var(--surface-soft);flex-shrink:0;padding:6px}
.c-item .ph{width:84px;height:84px;border-radius:10px;background:var(--surface-2);flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--gray)}
.c-info{flex:1;min-width:0}
.c-info .n{font-size:15px;font-weight:700}
.c-info .m{font-family:var(--mono);font-size:12.5px;color:var(--accent-deep);margin-top:3px;word-break:break-all}
.c-info .meta{font-size:12.5px;color:var(--txt-3);margin-top:4px}
.c-info .ops{display:flex;align-items:center;justify-content:space-between;margin-top:12px;gap:12px;flex-wrap:wrap}
.c-qty{display:flex;align-items:center;gap:9px}
.c-qty .lab{font-size:12.5px;color:var(--txt-3);white-space:nowrap}
.c-del{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--txt-2);background:var(--danger-bg);border:1px solid var(--danger-bd);border-radius:9px;padding:7px 14px;transition:.15s}
.c-del:hover{color:var(--warn);background:var(--danger-bg-h);border-color:var(--danger-bd-h)}
.c-del svg{width:14px;height:14px}
.cart-empty{text-align:center;padding:80px 0;color:var(--txt-3);font-size:14px}
.cart-empty b{display:block;font-size:40px;margin-bottom:12px;opacity:.35}
.cart-empty .btn{margin-top:18px}

/* ============ 订单 ============ */
.order-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;margin-bottom:16px}
.order-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:15px 20px;border-bottom:1px solid var(--line-soft);flex-wrap:wrap}
.order-head .no{font-size:14px;font-weight:700;color:var(--txt)}
.order-head .no small{font-weight:400;color:var(--txt-3);font-size:12px;margin-left:10px}
.status{font-size:13px;font-weight:700;padding:4px 12px;border-radius:999px}
.status.wait{color:var(--state-info);background:var(--state-info-bg)}
.status.done{color:var(--state-success);background:var(--state-success-bg)}
.order-body{padding:8px 20px 16px}
.order-line{display:flex;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line-soft-3);align-items:center}
.order-line:last-child{border-bottom:none}
.order-line img{width:64px;height:64px;border-radius:9px;object-fit:contain;background:var(--surface-soft);padding:4px;flex-shrink:0}
.order-line .ph{width:64px;height:64px;border-radius:9px;background:var(--surface-2);flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--gray)}
.order-line .oi{flex:1;min-width:0}
.order-line .oi .n{font-size:14px;font-weight:600}
.order-line .oi .m{font-family:var(--mono);font-size:12px;color:var(--accent-deep);margin-top:2px;word-break:break-all}
.order-line .oi .meta{font-size:12px;color:var(--txt-3);margin-top:2px}
.order-line .qty{font-size:13px;color:var(--txt-2);white-space:nowrap}
.order-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 20px;background:var(--surface-hover);border-top:1px solid var(--line-soft);flex-wrap:wrap}
.order-foot .sum{font-size:13px;color:var(--txt-2)}
.order-foot .acts{display:flex;gap:8px;flex-wrap:wrap}
.order-detail{display:none;padding:8px 20px 20px;background:var(--surface-hover);border-top:1px solid var(--line-soft)}
.order-detail.open{display:block}
.order-detail .od-sec{padding:16px 0;border-top:1px solid var(--line-soft)}
.order-detail .od-sec:first-child{border-top:none;padding-top:6px}
.order-detail .od-h{font-size:13.5px;font-weight:700;color:var(--brand);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.order-detail .od-h::before{content:"";width:3px;height:13px;border-radius:2px;background:var(--accent)}
.order-detail .od-items{display:flex;flex-direction:column;gap:2px}
.order-detail .od-note{font-size:13px;color:var(--txt-3);background:var(--surface-alt);border:1px dashed var(--tint-9);border-radius:8px;padding:11px 14px}
.order-detail .kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px 24px;padding:14px 0}
.order-detail .kv div{font-size:13px;color:var(--txt-2)}
.order-detail .kv b{color:var(--txt);font-weight:600}
.order-detail .biz{background:var(--tint-4);border:1px solid var(--tint-bd);border-radius:10px;padding:12px 16px;font-size:13px;color:var(--txt-5);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.order-detail .biz b{color:var(--brand)}

/* ============ 个人中心 / 表单 ============ */
.auth-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:stretch}
.auth-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px 32px}
.auth-card h2{font-size:20px;font-weight:700;margin-bottom:6px}
.auth-card .sub{font-size:13px;color:var(--txt-3);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--txt-2);margin-bottom:6px}
.field label i{font-style:normal;color:var(--warn);margin-left:2px}
.field input,.field textarea,.field select{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 14px;font-size:14px;color:var(--txt);transition:.15s;background:#fff}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.1)}
.field .err{font-size:12px;color:var(--warn);margin-top:4px;display:none}
.field.bad input,.field.bad textarea{border-color:var(--warn)}
.field.bad .err{display:block}
.field-row{display:flex;gap:8px}
.field-row select{width:110px;flex-shrink:0}
.auth-switch{text-align:center;font-size:13px;color:var(--txt-2);margin-top:16px}
.auth-switch a{color:var(--brand);font-weight:600;cursor:pointer}
.auth-side{background:linear-gradient(135deg,var(--brand-dark),var(--brand-mid));border-radius:var(--radius);color:#fff;padding:34px 32px;display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden}
.auth-side::after{content:"";position:absolute;width:320px;height:320px;right:-120px;bottom:-140px;border-radius:50%;background:radial-gradient(circle,rgba(var(--accent-rgb),.35),transparent 70%)}
.auth-side img{height:26px;width:auto;max-width:170px;object-fit:contain;margin-bottom:22px;position:relative;z-index:1}
.auth-side h3{font-size:22px;margin-bottom:14px;position:relative;z-index:1}
.auth-side ul{position:relative;z-index:1}
.auth-side li{font-size:14px;color:var(--on-dark-2);margin-bottom:12px;display:flex;gap:10px;align-items:flex-start;line-height:1.6}
.auth-side li b{color:var(--accent-on-dark);font-family:var(--mono)}

.profile-head{display:flex;align-items:center;gap:18px;padding:26px 28px;background:linear-gradient(135deg,var(--brand-dark),var(--brand-mid));border-radius:var(--radius);color:#fff;position:relative;overflow:hidden;flex-wrap:wrap}
.profile-head::after{content:"";position:absolute;width:300px;height:300px;right:-100px;top:-160px;border-radius:50%;background:radial-gradient(circle,rgba(var(--accent-rgb),.35),transparent 70%)}
.avatar{width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;flex-shrink:0;border:1px solid rgba(255,255,255,.3)}
.profile-head .pi{position:relative;z-index:1;flex:1;min-width:140px}
.profile-head .pi .n{font-size:19px;font-weight:700}
.profile-head .pi .s{font-size:13px;color:var(--on-dark-2);margin-top:4px}
.profile-head .pa{position:relative;z-index:1;display:flex;gap:10px;flex-wrap:wrap}
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px}
.quick{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;display:flex;flex-direction:column;align-items:center;gap:9px;text-align:center;transition:.2s;color:var(--txt)}
.quick:hover{border-color:var(--brand);box-shadow:var(--shadow);transform:translateY(-2px)}
.quick svg{width:26px;height:26px;color:var(--brand)}
.quick .qn{font-size:14px;font-weight:600}
.quick .qs{font-size:12px;color:var(--txt-3)}
.quick .badge-n{position:absolute;transform:translate(26px,-26px);background:var(--warn);color:#fff;font-size:11px;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 5px}

/* ============ 相关产品 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.rel{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.2s;color:inherit}
.rel:hover{border-color:var(--line-hover);box-shadow:var(--shadow);transform:translateY(-3px)}
.rel .ri{aspect-ratio:1/1;background:radial-gradient(circle at 50% 45%,#fff,var(--line-soft-5));display:flex;align-items:center;justify-content:center}
.rel .ri img{width:100%;height:100%;object-fit:contain;padding:12%}
.rel .ri .ph{width:52%;opacity:.45}
.rel .rb{padding:12px 14px;font-size:13.5px;font-weight:600}

/* ============ 应用场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(228px,1fr));gap:10px}
.scene-item{display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--surface-alt);border:1px solid var(--tint-8);border-radius:10px;font-size:13.5px;color:var(--txt-4);transition:.2s}
.scene-item:hover{border-color:var(--line-hover);background:var(--hover-tint-2)}
.scene-item .sn{font-family:var(--mono);font-size:12px;font-weight:700;color:var(--brand);opacity:.5;flex-shrink:0}
.scene-item .st{line-height:1.5}

/* ============ 弹层 / 抽屉 ============ */
.mask{position:fixed;inset:0;background:rgba(var(--mask-rgb),.5);backdrop-filter:blur(2px);z-index:200;opacity:0;visibility:hidden;transition:.25s}
.mask.show{opacity:1;visibility:visible}
.modal{position:fixed;z-index:210;left:50%;top:50%;transform:translate(-50%,-46%) scale(.96);width:min(560px,92vw);max-height:86vh;overflow:auto;background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transition:.25s}
.modal.show{opacity:1;visibility:visible;transform:translate(-50%,-50%) scale(1)}
.modal.wide{width:min(820px,94vw)}
.modal-head{padding:20px 24px 12px;display:flex;justify-content:space-between;align-items:center;gap:12px}
.modal-head h3{font-size:18px;font-weight:700}
.x{font-size:20px;color:var(--txt-3);width:32px;height:32px;border-radius:8px;flex-shrink:0}
.x:hover{background:var(--surface-2);color:var(--txt)}
.modal-body{padding:4px 24px 8px}
.modal-foot{padding:14px 24px 22px;display:flex;gap:12px;justify-content:flex-end;flex-wrap:wrap}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(440px,94vw);background:#fff;z-index:210;transform:translateX(105%);transition:.3s;display:flex;flex-direction:column;box-shadow:-12px 0 40px rgba(var(--brand-dark-rgb),.18)}
.drawer.show{transform:none}
.drawer-head{padding:18px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.drawer-head h3{font-size:17px;font-weight:700}
.drawer-list{flex:1;overflow:auto;padding:14px 22px}
.d-foot{border-top:1px solid var(--line);padding:16px 22px 20px}
.toast{position:fixed;left:50%;top:76px;transform:translateX(-50%) translateY(-16px);background:rgba(var(--toast-rgb),.92);color:#fff;font-size:14px;padding:10px 22px;border-radius:999px;z-index:300;opacity:0;visibility:hidden;transition:.3s;max-width:86vw;text-align:center}
.toast.show{opacity:1;visibility:visible;transform:translateX(-50%)}

/* ============ 页脚 ============ */
.footer{background:var(--footer-bg);color:var(--footer-txt);margin-top:auto}
.footer .wrap{padding:44px 24px 30px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:600}
.footer .fbrand img{height:26px;margin-bottom:14px}
.footer p{font-size:13px;line-height:1.9}
.footer li{font-size:13px;margin-bottom:9px}
.footer li a:hover{color:#fff}
.footer-bar{border-top:1px solid rgba(255,255,255,.08)}
.footer-bar .wrap{display:flex;justify-content:space-between;gap:10px;padding:16px 24px;font-size:12px;color:var(--footer-txt-2);flex-wrap:wrap}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .detail-grid{grid-template-columns:1fr;gap:24px}
  .gallery{position:static}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer .wrap{grid-template-columns:1fr 1fr}
  .auth-grid{grid-template-columns:1fr}
  .auth-side{order:-1}
}
@media (max-width:900px){
  .nav{display:none}
  .burger{display:block}
  .nav.open{display:flex;position:absolute;top:68px;left:0;right:0;background:var(--brand-dark);flex-direction:column;padding:12px 18px 18px;gap:2px;box-shadow:var(--shadow-lg)}
  .pagehero h1{font-size:22px}
  .rail{display:none}
  .quick-grid{grid-template-columns:1fr 1fr}
  .actionbar .inner{padding:10px 16px}
}
@media (max-width:600px){
  .wrap{padding:0 16px}
  .topbar .links{display:none}
  .header .wrap{gap:14px}
  .header-act .btn-ghost{display:none}
  .footer .wrap{grid-template-columns:1fr}
  .detail-h1{font-size:22px}
  .panel-pad{padding:18px 16px}
  .panel-head{padding:16px 16px 0}
  .quick-grid{grid-template-columns:1fr 1fr}
  .c-item img,.c-item .ph{width:64px;height:64px}
  .actionbar .inner{flex-direction:column;align-items:stretch}
  .actionbar .acts{display:grid;grid-template-columns:1fr 1fr}
  .actionbar .acts .btn{width:100%}
  table.tbl{min-width:0}
  table.tbl td,table.tbl th{padding:10px 12px}
  table.tbl.cmp{min-width:560px}
}

/* =========================================================
   英文版本地化排版适配（lang="en"）
   解决：英文标签更长导致的按钮拥挤、长词溢出、
   以及中文专用字间距套用到拉丁字母产生的松散感
   ========================================================= */
html[lang="en"] body{letter-spacing:.15px;word-spacing:.3px}
/* 拉丁字母不需要中文的额外字间距，关掉 h1/标题的字距 */
html[lang="en"] .pagehero h1,
html[lang="en"] .detail-h1,
html[lang="en"] .panel-head h2,
html[lang="en"] .sec-title,
html[lang="en"] .auth-card h2,
html[lang="en"] .auth-side h3,
html[lang="en"] .modal-head h3,
html[lang="en"] .drawer-head h3{letter-spacing:0}
/* 英文导航/按钮标签普遍更长，放宽内边距并允许换行优先收缩 */
html[lang="en"] .nav a{padding:8px 11px;white-space:nowrap}
html[lang="en"] .btn{padding:0 15px}
html[lang="en"] .btn-sm{padding:0 12px}
html[lang="en"] .btn-lg{padding:0 22px}
html[lang="en"] .header-act .btn{white-space:nowrap}
/* 长英文选项/型号词可断行，避免撑破 chip、结果框与清单行 */
html[lang="en"] .chips button{white-space:normal;word-break:break-word;min-height:36px;align-items:flex-start}
html[lang="en"] .chips button small{word-break:break-word}
html[lang="en"] .result-box b,
html[lang="en"] .detail-model,
html[lang="en"] .kv-line b{word-break:break-word}
html[lang="en"] .c-info .m,
html[lang="en"] .order-line .oi .m,
html[lang="en"] .c-info .meta,
html[lang="en"] .order-line .oi .meta{word-break:break-word}
/* 英文产品名可能较长，气泡/卡片标题允许自然断行 */
html[lang="en"] .detail-h1,
html[lang="en"] .rel .rb,
html[lang="en"] .c-info .n,
html[lang="en"] .order-line .oi .n{word-break:break-word}
/* 文档行、页脚在英文下文本更长，保证可换行不溢出 */
html[lang="en"] .doc-row .dn em{white-space:normal;word-break:break-word}
html[lang="en"] .footer p,
html[lang="en"] .footer li{word-break:break-word}
/* 吸底操作条英文摘要更长，保证数字与文字不挤压 */
html[lang="en"] .actionbar .sum{line-height:1.5}
/* 顶部语言切换与链接英文 */
html[lang="en"] .topbar .lang button{padding:0 5px}