/* ==========================================================================
   NEW SHANBAO — 产品与备件页面样式
   与官网首页保持同一套设计令牌：navy #0D1B2A / accent #C41230 / bg #F2F5F9
   ========================================================================== */

:root{
  --navy:#0D1B2A;
  --navy-2:#132840;
  --accent:#C41230;
  --accent-d:#9E0E26;
  --bg:#F2F5F9;
  --ink:#13233A;
  --muted:#5C6B7A;
  --line:#DDE5EE;
  --card:#FFFFFF;
  --radius:12px;
  --radius-s:8px;
  --shadow:0 1px 2px rgba(13,27,42,.06),0 8px 24px rgba(13,27,42,.06);
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI','Microsoft YaHei','Noto Sans SC','Helvetica Neue',Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,h5{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 14px}
ul,ol{margin:0 0 14px;padding-left:20px}
li{margin:6px 0}

.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:900px;margin:0 auto;padding:0 24px}

/* ------------------------------------------------------------------ 页头 */
.ph{position:sticky;top:0;z-index:60;background:var(--navy);color:#fff;
    box-shadow:0 1px 0 rgba(255,255,255,.07),0 6px 20px rgba(13,27,42,.18)}
.ph-in{max-width:1200px;margin:0 auto;padding:10px 24px;display:flex;align-items:center;gap:22px}
.ph-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.ph-logo img,.ph-logo .logo-mark{width:40px;height:40px;border-radius:9px;display:block;flex:0 0 auto}
.ph-logo b{display:block;font-size:15px;letter-spacing:.02em}
.ph-logo i{display:block;font-style:normal;font-size:9.5px;letter-spacing:.16em;color:#8FA6BF}
.ph-nav{display:flex;gap:18px;margin-left:auto;font-size:14.5px;color:#C9D6E4}
.ph-nav a{padding:6px 0;border-bottom:2px solid transparent;transition:.18s}
.ph-nav a:hover{color:#fff;border-color:var(--accent)}
.ph-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.ph-lang{font-size:13px;color:#C9D6E4;border:1px solid rgba(255,255,255,.22);
         padding:6px 11px;border-radius:999px;transition:.18s;white-space:nowrap}
.ph-lang:hover{color:#fff;border-color:var(--accent);background:rgba(196,18,48,.18)}
.btn-brand{display:inline-block;background:var(--accent);color:#fff;font-weight:600;font-size:14px;
           padding:9px 18px;border-radius:999px;transition:.18s;white-space:nowrap}
.btn-brand:hover{background:var(--accent-d)}
.btn-outline{display:inline-block;border:1.5px solid var(--line);color:var(--ink);font-weight:600;
             font-size:14.5px;padding:11px 22px;border-radius:999px;background:#fff;transition:.18s}
.btn-outline:hover{border-color:var(--navy);background:#fff}
.ph-burger{display:none;background:none;border:0;padding:8px;cursor:pointer}
.ph-burger i{display:block;width:22px;height:2px;background:#fff;margin:4px 0;border-radius:2px}

/* ------------------------------------------------------------------ 面包屑 */
.crumbs{font-size:13px;color:var(--muted);padding:16px 0 0}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--accent)}
.crumbs span.sep{margin:0 7px;color:#B7C4D2}
.crumbs .cur{color:var(--ink);font-weight:600}

/* ------------------------------------------------------------------ 首屏 */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 62%,#1B3A5C 100%);
      color:#fff;padding:34px 0 40px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-90px;top:-90px;width:420px;height:420px;border-radius:50%;
             background:radial-gradient(circle,rgba(196,18,48,.30),rgba(196,18,48,0) 68%)}
.hero-in{position:relative;z-index:1}
.hero .crumbs{color:#8FA6BF;padding-top:0}
.hero .crumbs a{color:#8FA6BF}
.hero .crumbs a:hover{color:#fff}
.hero .crumbs span.sep{color:#4E6A88}
.hero .crumbs .cur{color:#fff}
.tag{display:inline-block;background:rgba(196,18,48,.9);color:#fff;font-size:12px;font-weight:700;
     letter-spacing:.08em;text-transform:uppercase;padding:5px 12px;border-radius:999px;margin-bottom:14px}
.hero h1{font-size:clamp(26px,4vw,42px);margin-bottom:12px}
.hero .sub{color:#B9C9DA;font-size:17px;max-width:820px;margin:0}
.hero-alt{font-size:14px;color:#8FA6BF;margin:8px 0 0}

/* 关键参数条 */
.strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;
       background:rgba(255,255,255,.14);border-radius:var(--radius);overflow:hidden;margin-top:26px}
.strip div{background:rgba(13,27,42,.62);padding:14px 18px}
.strip dt{font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:#8FA6BF;margin:0 0 5px}
.strip dd{margin:0;font-size:19px;font-weight:700;color:#fff}
.strip dd small{font-size:12px;font-weight:500;color:#A9BCCE;margin-left:3px}

/* ------------------------------------------------------------------ 版块 */
.sec{padding:44px 0}
.sec.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec h2{font-size:24px;margin-bottom:8px;display:flex;align-items:center;gap:11px}
.sec h2::before{content:"";width:4px;height:22px;background:var(--accent);border-radius:2px;flex:0 0 auto}
.sec h3{font-size:18px;margin:26px 0 10px}
.sec .lead{color:var(--muted);margin-bottom:22px;max-width:900px}

.grid-2{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:start}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
      padding:20px 22px;box-shadow:var(--shadow)}
.card h3{margin-top:0;font-size:16.5px;display:flex;gap:9px;align-items:center}
.card h3 .ico{width:24px;height:24px;flex:0 0 auto;border-radius:6px;background:rgba(196,18,48,.1);
              color:var(--accent);font-size:12px;display:grid;place-items:center;font-weight:800}
.card p:last-child,.card ul:last-child{margin-bottom:0}

/* 参数表 */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:15px;min-width:420px}
table.spec th,table.spec td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
table.spec thead th{background:#EEF3F9;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;
                    color:var(--muted);font-weight:700}
table.spec tbody tr:last-child td{border-bottom:0}
table.spec td:first-child{color:var(--muted);width:42%}
table.spec td:last-child{font-weight:600}
table.spec td:last-child small{font-weight:500;color:var(--muted);margin-left:4px}
.note{font-size:13px;color:var(--muted);margin-top:10px}

/* 特性 / 应用 列表 */
ul.ticks{list-style:none;padding:0;margin:0}
ul.ticks li{position:relative;padding-left:26px;margin:11px 0}
ul.ticks li::before{content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;
                    border-radius:50%;background:var(--accent)}
ul.chips{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:9px}
ul.chips li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;
            font-size:14px;margin:0}
ul.chips li:hover{border-color:var(--accent);color:var(--accent)}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
             padding:16px 20px;margin-bottom:11px}
.faq details[open]{box-shadow:var(--shadow)}
.faq summary{font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-weight:700;font-size:19px;line-height:1;flex:0 0 auto}
.faq details[open] summary::after{content:"–"}
.faq .a{margin-top:11px;color:var(--muted);font-size:15px}
.faq .a p:last-child{margin-bottom:0}

/* 相关型号 */
.chips-rel{display:flex;flex-wrap:wrap;gap:8px}
.chips-rel a{background:#fff;border:1px solid var(--line);border-radius:var(--radius-s);
             padding:7px 13px;font-size:14px;transition:.16s}
.chips-rel a:hover{border-color:var(--accent);color:var(--accent)}
.chips-rel a.cur{background:var(--navy);color:#fff;border-color:var(--navy)}

/* 询价条 */
.cta{background:linear-gradient(135deg,var(--navy),#1B3A5C);color:#fff;border-radius:var(--radius);
     padding:30px 32px;display:flex;gap:24px;align-items:center;flex-wrap:wrap}
.cta h3{font-size:21px;margin-bottom:7px}
.cta p{color:#B9C9DA;margin:0;font-size:15px;max-width:620px}
.cta .acts{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap}
.cta .btn-outline{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.cta .btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1)}

/* 目录卡 */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(232px,1fr));gap:14px}
a.cat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;
      transition:.18s;display:block}
a.cat:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}
a.cat .n{font-size:17px;font-weight:700;margin-bottom:4px}
a.cat .c{font-size:13px;color:var(--muted)}
a.cat .m{font-size:12.5px;color:var(--muted);margin-top:9px;line-height:1.55}

/* 备件表 */
table.parts{width:100%;border-collapse:collapse;font-size:13.5px}
table.parts th,table.parts td{padding:8px 12px;border-bottom:1px solid var(--line);text-align:left;
                              vertical-align:top}
table.parts thead th{background:#EEF3F9;position:sticky;top:60px;z-index:2;font-size:12px;
                     letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
table.parts tbody tr:hover{background:#F7FAFD}
table.parts td.code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12.5px;
                    color:var(--navy);white-space:nowrap}
.parts-tools{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:14px}
.parts-tools input{flex:1 1 260px;padding:11px 16px;border:1px solid var(--line);border-radius:999px;
                   font-size:14.5px;font-family:var(--font);background:#fff}
.parts-tools input:focus{outline:none;border-color:var(--accent)}
.parts-tools .cnt{font-size:13.5px;color:var(--muted)}
.acc{border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin-bottom:12px;overflow:hidden}
.acc>summary{padding:14px 20px;font-weight:600;cursor:pointer;list-style:none;background:#F7FAFD;
             display:flex;justify-content:space-between;gap:12px}
.acc>summary::-webkit-details-marker{display:none}
.acc>summary .n{font-size:13px;color:var(--muted);font-weight:500}
.acc .body{padding:0}
.no-res{padding:18px;color:var(--muted);font-size:14px;display:none}

/* 页脚 */
.pf{background:var(--navy);color:#9FB3C8;padding:44px 0 24px;margin-top:8px;font-size:14px}
.pf-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.pf h5{color:#fff;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:13px}
.pf a{display:block;color:#9FB3C8;padding:3px 0}
.pf a:hover{color:#fff}
.pf .brand{display:flex;align-items:center;gap:11px;margin-bottom:13px}
.pf .brand img,.pf .brand .logo-mark{width:40px;height:40px;border-radius:9px;display:block;flex:0 0 auto}
.pf .brand b{color:#fff;display:block;font-size:15px}
.pf .brand i{font-style:normal;font-size:9.5px;letter-spacing:.16em}
.pf .bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:30px;padding-top:18px;
            display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:#7C90A6}

/* 侧栏目录（长表页） */
.toc{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.toc a{font-size:13px;border:1px solid var(--line);border-radius:999px;padding:5px 12px;background:#fff}
.toc a:hover{border-color:var(--accent);color:var(--accent)}

@media(max-width:1000px){
  .ph-nav{display:none}
  .ph-burger{display:block;margin-left:auto}
  .ph-right{margin-left:auto}
  .grid-2{grid-template-columns:1fr;gap:24px}
  .pf-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  body{font-size:15.5px}
  .wrap,.wrap-narrow{padding:0 16px}
  .hero{padding:24px 0 30px}
  .sec{padding:32px 0}
  .cta{padding:22px}
  .cta .acts{margin-left:0;width:100%}
  .pf-grid{grid-template-columns:1fr}
  .strip{grid-template-columns:1fr 1fr}
  table.parts thead th{position:static}
}