/* _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:'Readex Pro','Segoe UI',Tahoma,Arial,sans-serif}
[data-palette="p1-indigo-teal"]
/* 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}

/* t3 — 编辑排版风 (ed-) */
.ed-mast{background:var(--card);border-bottom:3px double var(--line);padding-block:34px 0;text-align:center}
.ed-mast-in{max-width:980px;margin-inline:auto;padding-inline:20px}
.ed-mast-kicker{font-size:.8rem;letter-spacing:2px;color:var(--mut);font-weight:600}
.ed-mast-title{display:block;font-size:clamp(2.2rem,6vw,3.4rem);font-weight:800;color:var(--ink);line-height:1.15;margin-block:6px}
.ed-mast-tag{font-size:.9rem;color:var(--mut)}
.ed-nav{display:flex;justify-content:center;gap:4px;flex-wrap:wrap;margin-top:22px;border-top:1px solid var(--line);padding-top:10px;font-size:.9rem;font-weight:600}
.ed-nav a{padding:7px 14px;border-radius:99px;color:var(--mut)}
.ed-nav a:hover{background:var(--soft);color:var(--pri)}
.ed-strip{max-width:980px;margin:14px auto 0;padding:9px 20px;display:flex;gap:26px;justify-content:center;flex-wrap:wrap;font-size:.82rem;border-top:1px dashed var(--line)}
.ed-strip i{font-style:normal;font-weight:700}
.ed-hero{max-width:900px;margin-inline:auto;padding:44px 20px 10px;text-align:center}
.ed-kicker{font-size:.8rem;font-weight:700;letter-spacing:1.5px;color:var(--acc);text-transform:uppercase}
.ed-hero-h{font-size:clamp(1.7rem,4.4vw,2.7rem);font-weight:800;line-height:1.4;margin-top:8px}
.ed-hero-sub{color:var(--mut);margin-top:12px;font-size:1.04rem}
.ed-stats{display:flex;justify-content:center;gap:0;margin-top:26px;flex-wrap:wrap}
.ed-stats div{padding:8px 28px;border-inline-start:1px solid var(--line)}
.ed-stats div:first-child{border-inline-start:none}
.ed-stats dd{font-size:1.25rem;font-weight:800;color:var(--pri)}
.ed-stats dt{font-size:.78rem;color:var(--mut)}
.ed-sec{max-width:900px;margin-inline:auto;padding-block:36px 6px;padding-inline:20px}
.ed-sec-h{font-size:1.3rem;font-weight:800;text-align:center;margin-bottom:24px}
.ed-sec-h::after{content:"";display:block;width:56px;height:3px;background:var(--acc);margin:10px auto 0;border-radius:2px}
.ed-rows{list-style:none}
.ed-row a{display:flex;align-items:baseline;gap:14px;padding-block:14px;border-bottom:1px solid var(--line)}
.ed-row a:hover .ed-row-main b{color:var(--pri)}
.ed-row-i{font-weight:800;color:var(--mut);opacity:.5;font-size:.85rem;min-width:26px}
.ed-row-main{flex:1;font-size:1.02rem}
.ed-row-main small{color:var(--mut)}
.ed-row-p{font-weight:800;color:var(--pri);direction:ltr}
.ed-row-ch{font-style:normal;font-weight:700;font-size:.88rem}
.ed-price{text-align:center;padding-block:8px}
.ed-price-sub{color:var(--mut);font-size:.9rem}
.ed-price-num{font-size:clamp(2rem,5vw,3rem);font-weight:800;color:var(--pri);direction:ltr}
.ed-price-num i{font-style:normal;font-size:1.1rem}
.ed-price-meta{list-style:none;display:flex;justify-content:center;gap:8px 28px;flex-wrap:wrap;margin-top:14px;font-size:.88rem;color:var(--mut)}
.ed-price-meta b{color:var(--ink)}
.ed-spark{width:100%;max-width:520px;height:62px;margin:20px auto 0}
.ed-spark.up{color:var(--up)} .ed-spark.dn{color:var(--dn)}
.ed-faq{max-width:860px;margin:30px auto 0}
.ed-faq-item{padding-block:18px;border-bottom:1px solid var(--line)}
.ed-faq-q{font-weight:800;font-size:1.02rem}
.ed-faq-a{color:var(--mut);margin-top:6px;font-size:.95rem}
.ed-art{margin-block:24px;max-width:860px;margin-inline:auto;border-radius:6px;overflow:hidden}
.ed-article{max-width:800px;margin-inline:auto;padding-inline:20px}
.ed-lead{font-size:1.14rem;font-weight:600;line-height:1.9;border-block:2px solid var(--line);padding-block:16px;margin-bottom:18px}
.ed-article-h{font-size:1.24rem;font-weight:800;margin:30px 0 10px;text-align:center}
.ed-article-h::after{content:"✦";display:block;color:var(--acc);font-size:.7rem;margin-top:2px}
.ed-article-p{color:#3a4254;text-align:justify}
.ed-related{max-width:760px;margin:34px auto 0;padding-inline:20px}
.ed-related h2{font-size:1.05rem;margin-bottom:12px}
.ed-related ul{list-style:square;padding-inline-start:22px;display:grid;grid-template-columns:1fr 1fr;gap:6px;font-size:.92rem}
.ed-related a{color:var(--pri);font-weight:600}
.ed-kv{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px 22px;max-width:760px;margin:18px auto 0}
.ed-kv ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:8px 24px;font-size:.9rem}
.ed-kv span{color:var(--mut)}
.ed-cta{max-width:760px;margin:30px auto 0;text-align:center;border:2px solid var(--pri);border-radius:14px;padding:24px}
.ed-cta-btn{display:inline-block;margin-top:12px;background:var(--pri);color:#fff;padding:10px 26px;border-radius:9px;font-weight:800}
.ed-hub{list-style:none;display:grid;grid-template-columns:1fr;gap:0}
.ed-hub a{display:flex;justify-content:space-between;align-items:baseline;gap:14px;padding-block:15px;border-bottom:1px solid var(--line)}
.ed-hub b{font-size:1.04rem} .ed-hub b:hover{color:var(--pri)}
.ed-hub span{color:var(--mut);font-size:.86rem}
.ed-crumbs{max-width:860px;margin:16px auto 0;padding-inline:20px;font-size:.82rem;color:var(--mut);text-align:center}
.ed-crumbs a{color:var(--pri)} .ed-crumb-sep{margin-inline:8px;opacity:.4}
.ed-foot{margin-top:60px;background:var(--ink);color:#c7ccd8;text-align:center;padding-block:40px 24px}
.ed-foot-in{max-width:860px;margin-inline:auto;padding-inline:20px}
.ed-foot-brand{font-size:1.5rem;font-weight:800;color:#fff}
.ed-foot-about{margin:8px auto 16px;max-width:480px;opacity:.8;font-size:.92rem}
.ed-foot-nav{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;font-size:.86rem}
.ed-rule{border:none;border-top:1px solid #2a3040;margin-block:20px}
.ed-warn{color:#e8c76a;font-size:.82rem}
.ed-disc{opacity:.72;font-size:.8rem;margin-top:8px}
.ed-attr{opacity:.55;font-size:.78rem;margin-top:6px}


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

@media(max-width:860px){
 .ed-burger{display:inline-flex;order:9}
 .ed-nav{display:none;position:absolute;top:100%;inset-inline:10px;flex-direction:column;
   background:var(--card);border:1px solid var(--line);border-top:none;border-radius:0 0 14px 14px;
   padding:8px;z-index:60;box-shadow:0 20px 40px rgba(15,22,40,.16)}
 .ed-nav a{padding:12px 14px;border-bottom:1px solid var(--line);border-radius:0}
 .ed-nav a:last-child{border-bottom:none}
 .ed-navtog:checked ~ .ed-mast-in .ed-nav{display:flex}
 .ed-mast{position:relative}
 .ed-burger{position:absolute;inset-inline-end:14px;top:14px;z-index:70}
}

/* 页面H1 */
.ed-h1x{font-size:1.5rem;font-weight:800;margin:14px auto 2px;max-width:860px;text-align:center;padding-inline:20px}