/* _base.css — reset + 通用变量(构建时拼接到每站 style.css 头部) */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--font:'Cairo','Segoe UI',Tahoma,Arial,sans-serif;--pri:#3556c9;--acc:#0d9488;--bg:#f7f8fb;--card:#ffffff;--ink:#1c2333;--mut:#5b6473;--line:#e4e7ee;--pri-ink:#ffffff;--soft:#eef1f8;--up:#0e9f6e;--dn:#e02424;--rad:12px}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;height:auto;display:block}
.up{color:var(--up)} .dn{color:var(--dn)}
.wrap{max-width:1140px;margin-inline:auto;padding-inline:20px}
[data-rad]{border-radius:var(--rad)}
::selection{background:var(--pri);color:var(--pri-ink)}

/* 工具页表单(全模板共用功能件) */
.tool-wrap{max-width:620px;display:grid;gap:16px;background:var(--card);border:1px solid var(--line);
  border-radius:14px;padding:24px;margin:14px auto 0}
.tool-row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.tool-row>label{flex:1;min-width:130px}
.tool-wrap label{display:grid;gap:6px;font-size:.85rem;font-weight:700;color:var(--mut)}
.tool-wrap input,.tool-wrap select{font:inherit;padding:11px 14px;border:1px solid var(--line);
  border-radius:10px;background:var(--bg);color:var(--ink);width:100%}
.tool-wrap input:focus,.tool-wrap select:focus{outline:2px solid var(--acc);outline-offset:1px}
.tool-btn{display:inline-block;font:inherit;font-weight:800;padding:11px 22px;border:none;cursor:pointer;
  background:var(--pri);color:var(--pri-ink);border-radius:10px}
.tool-swap{background:var(--soft);color:var(--pri);font-size:1.1rem;flex:none;width:52px}
.tool-out{font-size:1.5rem;font-weight:800;color:var(--pri);direction:ltr;text-align:right;
  padding:14px 16px;background:var(--soft);border-radius:10px}
.tool-kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.tool-kv dt{font-size:.78rem;color:var(--mut)}
.tool-kv dd{font-weight:800;direction:ltr;font-size:1.05rem}

:root{--font:'Noto Kufi Arabic','Segoe UI',Tahoma,Arial,sans-serif}
[data-palette="p3-navy-amber"]
/* palettes.css — 5 套调色板(body[data-palette] 覆盖变量) */
[data-palette="p1-indigo-teal"]{--pri:#3b55c4;--acc:#0d9488;--bg:#f6f7fb;--soft:#edf0fa;--pri-ink:#ffffff}
[data-palette="p2-emerald-gold"]{--pri:#047857;--acc:#b45309;--bg:#f4faf7;--soft:#e6f4ec;--pri-ink:#ffffff}
[data-palette="p3-navy-amber"]{--pri:#1e3a5f;--acc:#d97706;--bg:#f5f7fa;--soft:#e9eef5;--pri-ink:#ffffff}
[data-palette="p4-plum-coral"]{--pri:#6d28d9;--acc:#e11d48;--bg:#faf7fc;--soft:#f1eaf9;--pri-ink:#ffffff}
[data-palette="p5-slate-cyan"]{--pri:#334155;--acc:#0891b2;--bg:#f6f8fa;--soft:#e8edf3;--pri-ink:#ffffff}

/* t6 — 紧凑工具风 (ut-) */
.ut-bar{background:var(--pri);position:sticky;top:0;z-index:20}
.ut-bar-in{max-width:1080px;margin-inline:auto;padding:9px 16px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.ut-logo{color:#fff;font-weight:800;font-size:1.15rem;letter-spacing:.3px}
.ut-nav{display:flex;gap:1px;font-size:.84rem;font-weight:700;flex-wrap:wrap}
.ut-nav a{color:rgba(255,255,255,.82);padding:6px 11px;border-radius:7px}
.ut-nav a:hover{background:rgba(255,255,255,.15);color:#fff}
.ut-bar-date{margin-inline-start:auto;color:rgba(255,255,255,.6);font-size:.75rem}
.ut-quick{background:var(--ink);display:flex;gap:2px;overflow-x:auto;padding-block:7px}
.ut-quick a{display:inline-flex;gap:6px;align-items:center;color:#c7ccd8;font-size:.8rem;font-weight:700;padding:3px 12px;border-inline-end:1px solid #2a3040;white-space:nowrap}
.ut-quick i{font-style:normal}
.ut-hero{max-width:1080px;margin-inline:auto;padding:36px 16px 18px}
.ut-hero h1{font-size:clamp(1.4rem,3vw,2rem);font-weight:800;color:var(--pri)}
.ut-hero p{color:var(--mut);margin-top:8px;max-width:600px;font-size:.95rem}
.ut-stats{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.ut-stats span{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:7px 14px;font-size:.82rem;color:var(--mut)}
.ut-stats b{color:var(--ink);margin-inline-start:5px}
.ut-sec{max-width:1080px;margin-inline:auto;padding-block:26px;padding-inline:16px}
.ut-sec-h{font-size:1.05rem;font-weight:800;margin-bottom:12px;padding-bottom:7px;border-bottom:2px solid var(--pri);display:inline-block}
.ut-lines{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.ut-line{display:flex;align-items:center;gap:12px;background:var(--card);padding:10px 16px;font-size:.9rem}
.ut-line:hover{background:var(--soft)}
.ut-line b{font-weight:800}
.ut-line b:hover{color:var(--pri)}
.ut-line small{color:var(--mut);font-weight:700}
.ut-line-l{flex:1}
.ut-line i{font-style:normal;font-weight:800;font-size:.85rem}
.ut-price{max-width:1080px;margin:14px auto 0;padding-inline:16px}
.ut-price small{color:var(--mut);font-size:.85rem}
.ut-price-num{font-size:clamp(1.7rem,4vw,2.4rem);font-weight:800;color:var(--pri);direction:ltr}
.ut-price-num i{font-style:normal;font-size:1rem}
.ut-price-meta{display:flex;gap:8px 22px;flex-wrap:wrap;margin-top:10px;font-size:.85rem;color:var(--mut)}
.ut-price-meta b{color:var(--ink)}
.ut-spark{width:100%;max-width:520px;height:52px;margin-top:12px}
.ut-spark.up{color:var(--up)} .ut-spark.dn{color:var(--dn)}
.ut-faq{max-width:1080px;margin-inline:auto;padding-block:24px;padding-inline:16px}
.ut-faq-i{background:var(--card);border:1px solid var(--line);border-radius:8px;margin-bottom:7px}
.ut-faq-i summary{padding:11px 15px;font-weight:800;font-size:.92rem;cursor:pointer;list-style:none}
.ut-faq-i summary::-webkit-details-marker{display:none}
.ut-faq-i summary::before{content:"؟";color:var(--acc);font-weight:800;margin-inline-end:8px}
.ut-faq-i p{padding:0 15px 12px;color:var(--mut);font-size:.9rem}
.ut-art{margin:18px auto 0;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.ut-article{max-width:1080px}
.ut-lead{font-weight:700;font-size:1.05rem;background:var(--soft);padding:13px 16px;border-radius:8px;margin-bottom:14px}
.ut-article h2{font-size:1.12rem;font-weight:800;color:var(--pri);margin:22px 0 7px}
.ut-article p{color:#3a4254;font-size:.96rem}
.ut-related{max-width:1080px;margin:22px auto 0;padding-inline:16px}
.ut-cta{display:flex;justify-content:space-between;align-items:center;gap:14px;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:16px 18px;margin:22px auto 0;max-width:1048px;flex-wrap:wrap;font-size:.92rem}
.ut-cta a{background:var(--acc);color:#fff;padding:8px 18px;border-radius:8px;font-weight:800}
.ut-kv{max-width:1080px;margin:14px auto 0;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:15px 18px}
.ut-crumbs{max-width:1080px;margin:12px auto 0;padding-inline:16px;font-size:.8rem;color:var(--mut)}
.ut-crumbs a{color:var(--pri)}
.ut-foot{margin-top:54px;background:var(--ink);color:#c7ccd8;padding-block:34px 22px}
.ut-foot-in{max-width:1080px;margin-inline:auto;padding-inline:16px}
.ut-foot-top{display:flex;gap:18px;align-items:baseline;flex-wrap:wrap;margin-bottom:14px}
.ut-foot-top p{color:#9aa4bd;font-size:.88rem;max-width:460px}
.ut-foot-nav{display:flex;gap:16px;flex-wrap:wrap;font-size:.84rem;margin-bottom:14px}
.ut-warn{color:#e8c76a;font-size:.8rem}
.ut-disc{opacity:.72;font-size:.78rem;margin-top:7px}
.ut-attr{opacity:.55;font-size:.76rem;margin-top:5px}


/* 移动端汉堡菜单(纯CSS) */
.ut-navtog{position:absolute;opacity:0;pointer-events:none;height:0}
.ut-burger{display:none;width:42px;height:38px;border:1px solid transparent;border-radius:10px;
  flex-direction:column;gap:4px;align-items:center;justify-content:center;cursor:pointer;
  background:rgba(255,255,255,.14);color:#fff;flex:none}
.ut-burger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px}

@media(max-width:880px){
 .ut-burger{display:inline-flex;order:9;margin-inline-start:auto}
 .ut-nav{display:none;position:absolute;top:100%;inset-inline:10px;flex-direction:column;
   background:var(--pri);border:1px solid transparent;border-top:none;border-radius:0 0 14px 14px;
   padding:8px;z-index:60;box-shadow:0 20px 40px rgba(10,14,24,.35)}
 .ut-nav a{padding:12px 14px;border-bottom:1px solid transparent;border-radius:0}
 .ut-nav a:last-child{border-bottom:none}
 .ut-navtog:checked ~ .ut-nav{display:flex}
 .ut-bar{position:relative}
 .ut-bar-date{display:none}
 .ut-burger{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.25);color:#fff}
}

/* 页面H1 */
.ut-h1x{font-size:1.3rem;font-weight:800;color:var(--pri);margin:12px 0 8px}