:root{
  --blue-deep:#0a1f3d;
  --blue:#0d2b52;
  --blue-mid:#1a3d7c;
  --blue-light:#2563b0;
  --blue-glow:rgba(37,99,176,.12);
  --orange:#e8742c;
  --orange-light:#f0924a;
  --orange-bg:rgba(232,116,44,.08);
  --bg:#eef2f7;
  --bg-white:#ffffff;
  --ink:#16243f;
  --ink-2:#33415c;
  --muted:#6b7891;
  --border:#e2e8f0;
  --border-2:#d4dce8;
  --radius:14px;
  --radius-sm:9px;
  --shadow:0 1px 2px rgba(10,31,61,.06),0 6px 20px rgba(10,31,61,.07);
  --shadow-lg:0 4px 10px rgba(10,31,61,.08),0 16px 44px rgba(10,31,61,.12);
  --shadow-card:0 2px 8px rgba(10,31,61,.06),0 10px 28px rgba(10,31,61,.06);
  --font:'Inter','Segoe UI',Roboto,Helvetica,Arial,'PingFang SC','Microsoft YaHei',sans-serif;
  --transition:.18s ease;
  /* text on dark */
  --on-dark:#f1f5fb;
  --on-dark-2:rgba(225,233,245,.8);
  --on-dark-muted:rgba(205,216,234,.62);
  --link-dark:#cfe0f5;
  /* text on white */
  --on-white:#16243f;
  --on-white-2:#33415c;
  --on-white-muted:#6b7891;
  --link-white:#1a4a8a;
}

*{box-sizing:border-box}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;margin:0}
a{color:var(--blue-light);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--orange)}
img{max-width:100%;display:block}
h1{font-size:clamp(1.7rem,4vw,2.5rem);font-weight:800;line-height:1.18;color:var(--on-white)}
h2{font-size:clamp(1.15rem,2.5vw,1.5rem);font-weight:700;color:var(--blue);margin:.2em 0 .6em}
h3{font-size:1.06rem;font-weight:650;color:var(--ink)}
p{color:var(--on-white-2);line-height:1.75}
.muted{color:var(--on-white-muted)}
strong{font-weight:650;color:var(--ink)}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

/* ---------- Header ---------- */
.site-header{background:linear-gradient(135deg,var(--blue-deep) 0%,var(--blue) 60%,var(--blue-mid) 100%);
  position:sticky;top:0;z-index:200;box-shadow:0 2px 14px rgba(10,31,61,.28);border-bottom:3px solid var(--orange)}
.header-inner{max-width:1180px;margin:0 auto;padding:0 20px;height:64px;display:flex;align-items:center;gap:18px}
.logo{font-weight:800;font-size:1.18rem;color:#fff;white-space:nowrap;letter-spacing:.3px}
.logo:hover{color:#fff}
.main-nav{display:flex;gap:4px;margin-left:6px}
.main-nav a{color:var(--on-dark-2);padding:8px 12px;border-radius:8px;font-size:.93rem;font-weight:550;transition:background var(--transition),color var(--transition)}
.main-nav a:hover{background:rgba(255,255,255,.1);color:#fff}
.main-nav a.active{background:var(--orange);color:#fff}
.search-mini{margin-left:auto;display:flex;align-items:center;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.18);border-radius:10px;overflow:hidden;backdrop-filter:blur(4px)}
.search-mini input{flex:1;min-width:130px;background:transparent;border:0;color:#fff;padding:9px 12px;font-size:.92rem;outline:none}
.search-mini input::placeholder{color:rgba(225,233,245,.6)}
.search-mini button{background:transparent;border:0;color:#fff;padding:0 12px;cursor:pointer;font-size:1rem}
.search-mini button:hover{color:var(--orange-light)}

/* ---------- Layout ---------- */
.main-content{min-height:calc(100vh - 64px - 120px)}
.page-hero{background:linear-gradient(135deg,var(--blue-deep),var(--blue-mid));color:#fff;padding:54px 0 46px}
.page-hero h1{color:#fff}
.page-hero .muted{color:var(--on-dark-2)}
.page-section{max-width:1180px;margin:0 auto;padding:40px 20px}
.page-section ul{padding-left:20px;color:var(--on-white-2)}
.page-section li{margin:.35em 0}

/* ---------- Hero (home) ---------- */
.hero-section{background:radial-gradient(1200px 500px at 70% -10%,rgba(37,99,176,.25),transparent),
  linear-gradient(135deg,var(--blue-deep) 0%,var(--blue) 55%,var(--blue-mid) 100%);color:#fff;padding:72px 0 64px}
.hero-inner{max-width:880px;margin:0 auto;padding:0 20px;text-align:center}
.hero-inner h1{color:#fff;margin-bottom:.3em}
.hero-lead{color:var(--on-dark-2);font-size:1.12rem;max-width:680px;margin:0 auto 28px}
.search-hero{margin:0 auto;max-width:640px}
.search-box-wrap{display:flex;gap:10px;background:#fff;padding:8px;border-radius:14px;box-shadow:var(--shadow-lg)}
.search-input-lg{flex:1;border:0;outline:none;padding:14px 16px;font-size:1.05rem;color:var(--ink);border-radius:9px}
.search-input-lg::placeholder{color:#9aa7bd}
.btn-orange{background:linear-gradient(135deg,var(--orange),var(--orange-light));color:#fff;border:0;padding:14px 26px;border-radius:10px;font-weight:700;font-size:1rem;cursor:pointer;transition:transform var(--transition),box-shadow var(--transition);white-space:nowrap}
.btn-orange:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(232,116,44,.4)}
.btn-orange:active{transform:translateY(1px)}
.search-tips{color:var(--on-dark-muted);font-size:.85rem;margin-top:12px}
.hero-stats{display:flex;gap:30px;justify-content:center;margin-top:38px;flex-wrap:wrap}
.h-stat{text-align:center}
.h-stat strong{display:block;font-size:1.9rem;color:#fff;font-weight:800}
.h-stat span{color:var(--on-dark-2);font-size:.9rem}

/* ---------- Category grid (home) ---------- */
.home-section{max-width:1180px;margin:0 auto;padding:54px 20px}
.home-section h2{font-size:1.5rem}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin-top:22px}
.cat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)}
.cat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--blue-light)}
.cat-card h3{margin:0 0 6px;color:var(--blue)}
.cat-card p{font-size:.9rem;color:var(--on-white-muted);margin:0}

/* ---------- Database layout (sidebar + results) ---------- */
.db-layout{display:grid;grid-template-columns:280px 1fr;gap:26px;max-width:1180px;margin:0 auto;padding:28px 20px;align-items:start}
.sidebar{position:sticky;top:84px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.sidebar h3{margin:0 0 10px;font-size:1rem;color:var(--blue)}
.sidebar .filter-group{margin-bottom:18px}
.sidebar label.chk{display:flex;align-items:center;gap:8px;font-size:.88rem;color:var(--on-white-2);padding:4px 0;cursor:pointer}
.sidebar label.chk input{accent-color:var(--orange);width:15px;height:15px}
.sidebar .cat-link{display:flex;justify-content:space-between;align-items:center;padding:7px 10px;border-radius:8px;color:var(--on-white-2);font-size:.9rem;transition:background var(--transition)}
.sidebar .cat-link:hover{background:var(--orange-bg);color:var(--orange)}
.sidebar .cat-link.active{background:var(--blue);color:#fff}
.sidebar .cat-link .cnt{font-size:.78rem;color:var(--on-white-muted)}
.sidebar .cat-link.active .cnt{color:rgba(255,255,255,.8)}
.sidebar .clear-btn{font-size:.82rem;color:var(--blue-light);cursor:pointer;margin-top:6px;display:inline-block}
.sidebar .clear-btn:hover{color:var(--orange)}

/* ---------- Cat hero / search hero small ---------- */
.cat-hero{background:linear-gradient(135deg,var(--blue-deep),var(--blue-mid));color:#fff;padding:40px 0 34px}
.cat-hero-inner{max-width:1180px;margin:0 auto;padding:0 20px}
.breadcrumb{font-size:.85rem;color:var(--on-dark-muted);margin-bottom:8px}
.breadcrumb a{color:var(--link-dark)}
.breadcrumb a:hover{color:var(--orange-light)}
.cat-hero h1{color:#fff;margin:0 0 8px}
.cat-tagline{color:var(--on-dark-2);margin:0 0 14px;max-width:760px}
.cat-stats{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}
.stat-pill{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);border-radius:20px;padding:6px 14px;font-size:.88rem;color:#fff}
.stat-pill strong{font-weight:700}
.cat-search{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);border-radius:12px;padding:6px 12px;max-width:560px}
.cat-search-icon{color:var(--on-dark-2);flex-shrink:0}
.cat-search-input{flex:1;background:transparent;border:0;color:#fff;font-size:.95rem;outline:none;padding:8px 0}
.cat-search-input::placeholder{color:rgba(225,233,245,.6)}
.cat-search button{background:var(--orange);color:#fff;border:0;border-radius:8px;padding:8px 14px;cursor:pointer;font-weight:600}

/* ---------- Supplier box ---------- */
.supplier-box{background:linear-gradient(135deg,var(--orange-bg),#fff);border:1px solid var(--border-2);border-left:4px solid var(--orange);border-radius:var(--radius);padding:18px 20px;margin-bottom:22px}
.supplier-box h3{margin:0 0 6px;color:var(--blue)}
.supplier-box p{margin:0 0 12px;font-size:.92rem}
.supplier-box .btn-orange{padding:10px 20px;font-size:.92rem}

/* ---------- Material list ---------- */
.mat-list-section h2.list-heading{font-size:1.25rem;margin-bottom:14px}
.mat-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.mat-row{background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);padding:13px 16px;display:flex;align-items:center;gap:14px;transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)}
.mat-row:hover{transform:translateX(3px);box-shadow:var(--shadow);border-color:var(--blue-light)}
.mat-row-grade{font-weight:700;color:var(--blue);font-size:1.02rem;min-width:130px;flex-shrink:0}
.mat-row-grade:hover{color:var(--orange)}
.mat-row-meta{color:var(--on-white-muted);font-size:.88rem;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cat-badge{background:var(--blue-glow);color:var(--blue-mid);border:1px solid var(--border-2);border-radius:20px;padding:3px 10px;font-size:.74rem;font-weight:600;flex-shrink:0}
.loading,.error{color:var(--on-white-muted);padding:18px;text-align:center}

/* ---------- Pager ---------- */
.pager{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.pg{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 12px;border:1px solid var(--border);border-radius:9px;color:var(--on-white-2);font-size:.9rem;background:#fff;transition:all var(--transition)}
.pg:hover{border-color:var(--blue-light);color:var(--blue)}
.pg.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.pg-prev,.pg-next{font-weight:600}

/* ---------- Material detail ---------- */
.material-page{max-width:1000px;margin:0 auto;padding:24px 20px 60px}
.mat-hero{background:linear-gradient(135deg,var(--blue-deep),var(--blue-mid));color:#fff;border-radius:var(--radius);padding:30px 28px;margin-bottom:26px}
.mat-hero h1{color:#fff;margin:0 0 10px;font-size:clamp(1.6rem,4vw,2.4rem)}
.mat-desc{color:var(--on-dark-2);margin:0;max-width:820px}
.mat-breadcrumb{font-size:.85rem;color:var(--on-white-muted);margin-bottom:18px}
.mat-breadcrumb a{color:var(--blue-light)}
.mat-body{display:grid;grid-template-columns:1fr 280px;gap:26px;align-items:start}
.spec-section{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px 22px;margin-bottom:18px;box-shadow:var(--shadow-card)}
.spec-heading{font-size:1.12rem;color:var(--blue);margin:0 0 14px;padding-bottom:10px;border-bottom:2px solid var(--orange-bg)}
.comp-table{width:100%;border-collapse:collapse;font-size:.92rem}
.comp-table th{text-align:left;padding:8px 10px;color:var(--blue-mid);font-weight:600;width:42%;background:var(--bg);border-bottom:1px solid var(--border)}
.comp-table td{padding:8px 10px;color:var(--ink);border-bottom:1px solid var(--border)}
.comp-table tr:hover td{background:#fafcff}
.elem-pill{display:inline-block;background:var(--blue-glow);color:var(--blue-mid);border-radius:6px;padding:2px 8px;margin:2px;font-size:.82rem;font-weight:600}
.supplier-cta{background:linear-gradient(160deg,var(--orange-bg),#fff);border:1px solid var(--border-2);border-top:4px solid var(--orange);border-radius:var(--radius);padding:22px;position:sticky;top:84px;text-align:center}
.supplier-cta h3{margin:0 0 8px;color:var(--blue)}
.supplier-cta p{font-size:.9rem;margin:0 0 16px}
.copy-btn{background:#fff;border:1px solid var(--border-2);border-radius:8px;padding:6px 10px;font-size:.8rem;cursor:pointer;color:var(--blue-mid);margin-left:8px}
.copy-btn:hover{border-color:var(--orange);color:var(--orange)}

/* ---------- Search page ---------- */
.search-page .search-hero{background:linear-gradient(135deg,var(--blue-deep),var(--blue-mid));color:#fff;padding:42px 0 36px;text-align:center}
.search-page .search-hero h1{color:#fff;margin:0 0 18px}
.search-page .search-box-wrap{margin:0 auto;max-width:640px}
.search-page .search-tips{color:var(--on-dark-muted)}
.results-section{max-width:1180px;margin:0 auto;padding:30px 20px}
#results-heading{font-size:1.3rem}
#results-count{margin-bottom:18px}

/* ---------- Standards grid ---------- */
.standards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin-top:20px}
.std-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px;transition:all var(--transition)}
.std-card:hover{box-shadow:var(--shadow);border-color:var(--blue-light)}
.std-card h3{margin:0 0 4px;color:var(--blue);font-size:1rem}
.std-card .cnt{color:var(--on-white-muted);font-size:.82rem}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:20px 0}
.contact-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-card)}
.contact-card h3{margin:0 0 8px;color:var(--orange)}
.contact-card a{font-weight:600}

/* ---------- Footer ---------- */
.site-footer{background:var(--blue-deep);color:var(--on-dark-2);margin-top:40px;padding:30px 0}
.footer-inner{max-width:1180px;margin:0 auto;padding:0 20px;text-align:center}
.footer-inner p{margin:6px 0;font-size:.9rem}
.footer-links a{color:var(--link-dark)}
.footer-links a:hover{color:var(--orange-light)}

/* ---------- Spinner / Skeleton ---------- */
.spinner{width:34px;height:34px;border:3px solid var(--border-2);border-top-color:var(--orange);border-radius:50%;animation:spin .8s linear infinite;margin:30px auto}
@keyframes spin{to{transform:rotate(360deg)}}
.skeleton{background:linear-gradient(90deg,#eef2f7 25%,#e3e9f2 37%,#eef2f7 63%);background-size:400% 100%;animation:sk 1.3s ease infinite;border-radius:8px;height:18px;margin:8px 0}
@keyframes sk{0%{background-position:100% 0}100%{background-position:-100% 0}}
mark{background:#fff3cd;color:var(--ink);padding:0 2px;border-radius:3px}

/* ---------- Autocomplete ---------- */
.autocomplete{position:relative;flex:1}
.ac-list{position:absolute;top:calc(100% + 6px);left:0;right:0;background:#fff;border:1px solid var(--border-2);border-radius:12px;box-shadow:var(--shadow-lg);z-index:300;max-height:340px;overflow-y:auto;display:none}
.ac-list.show{display:block}
.ac-item{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;cursor:pointer;border-bottom:1px solid var(--border);font-size:.9rem}
.ac-item:last-child{border-bottom:0}
.ac-item:hover,.ac-item.active{background:var(--orange-bg)}
.ac-item .ac-grade{font-weight:700;color:var(--blue)}
.ac-item .ac-cat{font-size:.76rem;color:var(--on-white-muted)}
.ac-empty{padding:12px 14px;color:var(--on-white-muted);font-size:.88rem}

/* ---------- Toast ---------- */
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--blue-deep);color:#fff;padding:12px 22px;border-radius:10px;box-shadow:var(--shadow-lg);font-size:.92rem;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;z-index:500}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- Back to top ---------- */
#backTop{position:fixed;bottom:24px;right:24px;width:46px;height:46px;border-radius:50%;background:var(--orange);color:#fff;border:0;cursor:pointer;font-size:1.3rem;box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;z-index:400}
#backTop.show{opacity:1;pointer-events:auto}
#backTop:hover{transform:scale(1.08)}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .db-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .mat-body{grid-template-columns:1fr}
  .supplier-cta{position:static}
  .main-nav{display:none}
}
@media(max-width:560px){
  .mat-row{flex-wrap:wrap}
  .mat-row-meta{order:3;flex-basis:100%;white-space:normal}
  .hero-stats{gap:18px}
}

/* ============ Homepage Tools (v2) ============ */
#tools-section{margin-top:34px}
.tools-head{margin-bottom:18px}
.tools-head h2{font-size:1.7rem;color:#0a1f3d;margin:0 0 6px}
.section-lead{max-width:780px;color:#5a6b82;margin:6px 0 0;line-height:1.55}
.tool-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;border-bottom:2px solid #e8eef5;padding-bottom:0}
.tool-tab{background:transparent;border:none;border-bottom:3px solid transparent;color:#63748c;padding:10px 16px 12px;cursor:pointer;font-size:14.5px;font-weight:600;border-radius:8px 8px 0 0;transition:.15s;margin-bottom:-2px}
.tool-tab:hover{color:#0a1f3d;background:#f3f7fb}
.tool-tab.active{color:#0a1f3d;border-bottom-color:#e8742c;background:#f3f7fb}
.tool-panel{background:#fff;border:1px solid #e6ecf3;border-top:none;border-radius:0 0 12px 12px;padding:24px;box-shadow:0 4px 18px rgba(13,43,82,.05);animation:toolfade .25s ease}
@keyframes toolfade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.tool-hint{color:#5a6b82;font-size:13.5px;margin:0 0 14px;line-height:1.5}
.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}
.tool-grid-2{grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:820px){.tool-grid,.tool-grid-2{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.tool-grid-2{grid-template-columns:1fr}}
.wc-field{display:flex;flex-direction:column;gap:5px;font-size:13px;color:#1a3460;font-weight:600;margin-bottom:13px}
.wc-field>span{color:#3a4a64;font-weight:600}
.wc-field input,.wc-field select{padding:10px 12px;border:1px solid #cdd6e2;border-radius:8px;font-size:14px;font-weight:500;background:#fbfcfe;color:#1a3460;transition:.15s}
.wc-field input:focus,.wc-field select:focus{outline:none;border-color:#e8742c;box-shadow:0 0 0 3px rgba(232,116,44,.15);background:#fff}
#wc-dyna{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
.tool-btns{display:flex;gap:10px;margin-top:6px;flex-wrap:wrap}
.btn-orange{background:#e8742c;color:#fff;border:none;padding:11px 22px;border-radius:8px;font-weight:700;cursor:pointer;font-size:14px;transition:.15s;box-shadow:0 2px 8px rgba(232,116,44,.25)}
.btn-orange:hover{background:#d4621c;transform:translateY(-1px)}
.btn-ghost{background:#fff;border:1px solid #cdd6e2;color:#1a3460;padding:11px 18px;border-radius:8px;font-weight:600;cursor:pointer;font-size:14px;transition:.15s}
.btn-ghost:hover{background:#f0f4f8}
.chip-row{display:flex;flex-wrap:wrap;gap:7px;margin:4px 0 12px}
.chip{background:#eef3f9;border:1px solid #dde6f0;color:#1a3460;padding:6px 12px;border-radius:999px;font-size:12.5px;font-weight:600;cursor:pointer;transition:.15s}
.chip:hover{background:#e8742c;color:#fff;border-color:#e8742c}
.tool-output{min-height:60px}
.wc-out{background:linear-gradient(180deg,#f6f9fc,#eef3f9);border:1px solid #e2e8f0;border-radius:12px;padding:20px;position:relative}
.wc-big{font-size:36px;font-weight:800;color:#0a1f3d;line-height:1}
.wc-big span{font-size:18px;color:#5a6b82;font-weight:600}
.wc-sub{color:#5a6b82;font-size:13px;margin:6px 0 10px}
.wc-detail{list-style:none;padding:0;margin:0;font-size:13.5px;color:#3a4a64}
.wc-detail li{padding:5px 0;border-top:1px solid #e3e9f1;display:flex;justify-content:space-between;gap:12px}
.wc-detail li b{color:#0a1f3d}
.btn-copy{margin-top:12px;font-size:12.5px;padding:7px 14px}
.cf-row{display:flex;gap:8px;margin-bottom:10px;align-items:center;flex-wrap:wrap}
.cf-row select,.cf-row input{padding:8px 10px;border:1px solid #cdd6e2;border-radius:7px;font-size:13.5px;background:#fbfcfe;color:#1a3460}
.cf-row .cf-el{font-weight:700;color:#0a1f3d;min-width:64px}
.cf-row .cf-v1,.cf-row .cf-v2{width:92px}
.cf-del{background:#fde8e0;border:none;color:#d4621c;width:30px;height:30px;border-radius:6px;cursor:pointer;font-size:16px;font-weight:700}
.cf-del:hover{background:#fbd2c0}
.cf-count{font-size:14px;margin:14px 0 8px;color:#1a3460}
.mat-results{list-style:none;padding:0;margin:0;max-height:440px;overflow:auto}
.mat-results li{display:flex;align-items:center;gap:10px;padding:8px 4px;border-bottom:1px solid #eef2f7;font-size:13.5px}
.mat-row-grade{font-weight:700;color:#0a1f3d;text-decoration:none;min-width:120px}
.mat-row-grade:hover{color:#e8742c}
.mat-row-meta{color:#5a6b82;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.xr-card{background:linear-gradient(180deg,#f6f9fc,#eef3f9);border:1px solid #e2e8f0;border-radius:12px;padding:20px}
.xr-title{font-size:20px;font-weight:800;color:#0a1f3d;display:flex;align-items:center;gap:10px;margin-bottom:12px}
.xr-label{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:#8a98ad;font-weight:700;margin:14px 0 7px}
.xr-chips{display:flex;flex-wrap:wrap;gap:7px}
.xr-chip{background:#fff;border:1px solid #d6deea;color:#0a1f3d;padding:6px 12px;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;transition:.15s}
.xr-chip:hover{background:#0a1f3d;color:#fff;border-color:#0a1f3d}
.xr-chip-plain{cursor:default;background:#eef3f9;color:#3a4a64}
.xr-chip-plain:hover{background:#eef3f9;color:#3a4a64}
.xr-actions{margin-top:16px}
.cat-badge{display:inline-block;background:#0a1f3d;color:#fff;font-size:11px;font-weight:700;padding:3px 9px;border-radius:6px;letter-spacing:.02em}
#uc-result{font-size:22px;color:#0a1f3d;margin-top:10px;font-weight:700}
.tools-faq{margin-top:28px;border-top:1px solid #e8eef5;padding-top:20px}
.tools-faq h3{font-size:1.1rem;color:#0a1f3d;margin:0 0 12px}
.tools-faq dl{margin:0}
.tools-faq dt{font-weight:700;color:#1a3460;margin-top:12px;font-size:14px}
.tools-faq dd{margin:4px 0 0;color:#5a6b82;font-size:13.5px;line-height:1.6}
.tool-toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%) translateY(20px);background:#0a1f3d;color:#fff;padding:11px 22px;border-radius:10px;font-size:14px;font-weight:600;opacity:0;pointer-events:none;transition:.25s;z-index:9999;box-shadow:0 8px 24px rgba(10,31,61,.3)}
.tool-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}


/* ===== Standards module (auto-generated by _build_standards.py) ===== */
.std-org-tag{display:inline-block;background:#0d2b52;color:#f0f4f8;font-size:13px;font-weight:600;letter-spacing:.04em;padding:4px 12px;border-radius:20px;margin-bottom:10px;text-transform:uppercase;}
.std-toolbar{display:flex;flex-direction:column;gap:14px;margin-bottom:26px;}
.std-search{width:100%;max-width:560px;padding:12px 16px;border:1px solid #e2e8f0;border-radius:10px;font-size:15px;outline:none;background:#fff;color:#1a3460;}
.std-search:focus{border-color:#e8742c;box-shadow:0 0 0 3px rgba(232,116,44,.15);}
.std-cats{display:flex;flex-wrap:wrap;gap:8px;}
.std-chip{background:#fff;border:1px solid #e2e8f0;color:#1a3460;padding:7px 14px;border-radius:20px;font-size:13px;cursor:pointer;transition:.15s;}
.std-chip:hover{border-color:#e8742c;color:#e8742c;}
.std-chip.active{background:#0a1f3d;color:#fff;border-color:#0a1f3d;}
.standards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;}
.std-card{display:block;background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:18px 18px 16px;text-decoration:none;color:#1a3460;transition:.15s;box-shadow:0 1px 2px rgba(10,31,61,.04);}
.std-card:hover{transform:translateY(-2px);border-color:#e8742c;box-shadow:0 6px 18px rgba(10,31,61,.10);}
.std-card-org{font-size:12px;font-weight:700;color:#e8742c;letter-spacing:.05em;text-transform:uppercase;margin-bottom:6px;}
.std-card-code{font-size:18px;font-weight:700;color:#0a1f3d;margin-bottom:4px;}
.std-card-title{font-size:14px;font-weight:600;color:#1a3460;margin-bottom:6px;line-height:1.35;}
.std-card-scope{font-size:13px;color:#5a6b82;line-height:1.45;}
.std-count{margin-top:22px;font-size:14px;}
.std-detail{max-width:820px;}
.spec-table{width:100%;border-collapse:collapse;margin-top:8px;background:#fff;border:1px solid #e2e8f0;border-radius:10px;overflow:hidden;}
.spec-table th,.spec-table td{text-align:left;padding:11px 14px;border-bottom:1px solid #eef2f7;font-size:14px;vertical-align:top;}
.spec-table th{width:160px;color:#0a1f3d;background:#f6f8fb;font-weight:600;}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:none;}
.btn-primary{display:inline-block;background:#e8742c;color:#fff;padding:11px 20px;border-radius:9px;font-weight:600;text-decoration:none;font-size:14px;transition:.15s;}
.btn-primary:hover{background:#f0924a;}
.std-links{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 4px;}
.btn-secondary{display:inline-block;background:#fff;color:#0a1f3d;border:1px solid #e2e8f0;padding:11px 20px;border-radius:9px;font-weight:600;text-decoration:none;font-size:14px;transition:.15s;}
.btn-secondary:hover{border-color:#e8742c;color:#e8742c;}


/* ===== Dynamic site additions ===== */
.home-section{max-width:1180px;margin:0 auto;padding:42px 20px}
.section-lead{color:var(--on-white-2);max-width:720px;margin:0 0 22px;font-size:1.02rem}

.result-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin-top:18px}
.result-card{display:block;background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;box-shadow:var(--shadow-card);transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)}
.result-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--orange)}
.rc-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:4px}
.rc-grade{font-weight:750;color:var(--blue);font-size:1.05rem}
.rc-cat{font-size:.74rem;color:#fff;background:var(--blue-mid);padding:2px 9px;border-radius:20px;white-space:nowrap}
.rc-name{color:var(--on-white-muted);font-size:.86rem;margin-bottom:4px}
.rc-desc{color:var(--on-white-2);font-size:.86rem;line-height:1.5}

.cat-count{font-size:.72rem;color:var(--blue-light);background:var(--blue-glow);padding:1px 8px;border-radius:20px;margin-left:6px;font-weight:600}

.result-meta{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin:8px 0 4px}
.result-meta>span{color:var(--on-white-muted);font-size:.92rem}
.cat-filters{display:flex;gap:6px;flex-wrap:wrap}
.cat-filters a{font-size:.82rem;color:var(--on-white-2);background:var(--bg-white);border:1px solid var(--border);padding:4px 11px;border-radius:20px;transition:all var(--transition)}
.cat-filters a:hover{border-color:var(--orange);color:var(--orange)}
.cat-filters a.active{background:var(--orange);border-color:var(--orange);color:#fff}

.pager{display:flex;align-items:center;gap:18px;justify-content:center;margin:26px 0 6px}
.pager a{background:var(--blue);color:#fff;padding:9px 18px;border-radius:9px;font-weight:600;transition:background var(--transition)}
.pager a:hover{background:var(--blue-mid)}
.pager-info{color:var(--on-white-muted);font-size:.92rem}

.browse-layout{display:grid;grid-template-columns:230px 1fr;gap:26px;align-items:start;margin-top:14px}
.browse-sidebar{position:sticky;top:84px;background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow-card)}
.browse-sidebar h3{margin:.2em 0 .8em;color:var(--blue)}
.cat-list{list-style:none;margin:0;padding:0}
.cat-list li{margin:0}
.cat-list a{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 11px;border-radius:8px;color:var(--on-white-2);font-size:.9rem;transition:background var(--transition),color var(--transition)}
.cat-list a:hover{background:var(--bg);color:var(--blue)}
.cat-list a.active{background:var(--orange);color:#fff}
.cat-list .cnt{font-size:.74rem;color:var(--on-white-muted);background:var(--bg);padding:1px 8px;border-radius:20px}
.cat-list a.active .cnt{background:rgba(255,255,255,.25);color:#fff}
@media(max-width:760px){.browse-layout{grid-template-columns:1fr}.browse-sidebar{position:static}}

.calc-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow-card);max-width:420px}
.cc-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:7px 0;border-bottom:1px dashed var(--border-2)}
.cc-row:last-child{border-bottom:0}
.cc-row span{color:var(--on-white-muted);font-size:.9rem}
.cc-row b{color:var(--blue);font-size:1.02rem}

.detail-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:4px}
.detail-head h1{margin-bottom:0}
.detail-cat{font-size:.82rem;color:#fff;background:var(--blue-mid);padding:3px 12px;border-radius:20px}
.detail-name{color:var(--on-white-muted);font-size:1.05rem;margin:.2em 0}
.detail-desc{color:var(--on-white-2);max-width:820px}
.detail-grid{display:grid;grid-template-columns:300px 1fr;gap:26px;align-items:start;margin-top:20px}
@media(max-width:760px){.detail-grid{grid-template-columns:1fr}}
.detail-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.detail-actions .btn-orange,.detail-actions .btn-ghost{display:inline-block;padding:13px 24px;border-radius:10px;font-weight:700}
.btn-ghost{background:#fff;border:1px solid var(--border-2);color:var(--blue);padding:14px 24px;border-radius:10px;font-weight:650;cursor:pointer;transition:all var(--transition)}
.btn-ghost:hover{border-color:var(--orange);color:var(--orange)}
.spec-block{margin-bottom:16px}
.spec-block h3{margin:0 0 5px;color:var(--blue);font-size:.98rem}
.spec-block p{margin:0;color:var(--on-white-2);font-size:.92rem;line-height:1.6}
.comp-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border);border-radius:10px;overflow:hidden}
.comp-table th,.comp-table td{text-align:left;padding:7px 12px;border-bottom:1px solid var(--border-2);font-size:.9rem}
.comp-table th{width:42%;color:var(--on-white-muted);font-weight:600;background:var(--bg)}
.comp-table tr:last-child th,.comp-table tr:last-child td{border-bottom:0}

.cf-row{display:flex;gap:8px;align-items:center;margin-bottom:8px}
.cf-row select,.cf-row input{font-size:.92rem;padding:8px 10px;border:1px solid var(--border-2);border-radius:8px;outline:none}
.cf-row .cf-el{width:84px}
.cf-row .cf-op{width:64px}
.cf-row .cf-val{flex:1}
.cf-del{background:transparent;border:0;color:var(--muted);font-size:1.2rem;cursor:pointer;line-height:1}
.cf-del:hover{color:var(--orange)}

.ac-list{position:absolute;left:0;right:0;top:100%;background:#fff;border:1px solid var(--border-2);border-radius:0 0 10px 10px;box-shadow:var(--shadow-lg);z-index:50;overflow:hidden;display:none}
.autocomplete{position:relative;flex:1}
.ac-list .ac-item{padding:9px 14px;cursor:pointer;color:var(--ink);font-size:.95rem;border-bottom:1px solid var(--border)}
.ac-list .ac-item:hover,.ac-list .ac-item:last-child{border-bottom:0}
.ac-list .ac-item small{color:var(--on-white-muted);margin-left:8px}
.autocomplete:focus-within .ac-list{display:block}