/* _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:'Tajawal','Segoe UI',Tahoma,Arial,sans-serif}
[data-palette="p2-emerald-gold"]
/* 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}

/* t4 — 深色仪表盘风 (db-) */
body.t4{background:#0f1420;color:#dbe1ef;--card:#151b2c;--line:#232a3d;--ink:#dbe1ef;--mut:#9aa4bd;--bg:#0f1420;--soft:#1a2133;--pri-ink:#ffffff}
.db-top{background:#0a0e18;border-bottom:1px solid #232a3d;position:sticky;top:0;z-index:20}
.db-top-in{max-width:1220px;margin-inline:auto;padding:12px 20px;display:flex;align-items:center;gap:24px}
.db-logo{font-weight:800;font-size:1.3rem;display:flex;align-items:center;gap:9px;color:#fff}
.db-logo-dot{width:11px;height:11px;border-radius:3px;background:linear-gradient(135deg,var(--pri),var(--acc));display:inline-block}
.db-nav{display:flex;gap:2px;flex-wrap:wrap;font-size:.9rem;font-weight:600}
.db-nav a{padding:7px 13px;border-radius:8px;color:#9aa4bd}
.db-nav a:hover{background:#1a2133;color:#fff}
.db-clock{margin-inline-start:auto;font-size:.8rem;color:#6b7590}
.db-board{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1px;background:#232a3d;border-bottom:1px solid #232a3d}
.db-cell a{display:flex;flex-direction:column;gap:2px;background:#121828;padding:10px 16px}
.db-cell small{color:#6b7590;font-size:.72rem;font-weight:700;direction:ltr;text-align:right}
.db-cell b{direction:ltr;text-align:right;color:#fff}
.db-cell i{font-style:normal;font-size:.8rem;font-weight:800;direction:ltr;text-align:right}
.db-hero{max-width:1220px;margin-inline:auto;padding:44px 20px 20px}
.db-kicker{color:var(--acc);font-weight:800;font-size:.85rem;letter-spacing:1px}
.db-hero h1{color:#fff;font-size:clamp(1.6rem,3.4vw,2.4rem);font-weight:800;line-height:1.4;margin-top:6px;max-width:780px}
.db-hero-sub{color:#9aa4bd;margin-top:10px;max-width:620px}
.db-panels{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px;margin-top:26px}
.db-panel{background:#151b2c;border:1px solid #232a3d;border-radius:12px;padding:14px 18px}
.db-panel span{font-size:.76rem;color:#6b7590;display:block}
.db-panel b{font-size:1.18rem;color:#fff;direction:ltr;display:block;margin-top:2px}
.db-panel.up b{color:var(--up)} .db-panel.dn b{color:var(--dn)}
.db-sec{max-width:1220px;margin-inline:auto;padding-block:38px;padding-inline:20px}
.db-sec-head{display:flex;align-items:center;gap:16px;margin-bottom:18px}
.db-sec-head h2{color:#fff;font-size:1.22rem;font-weight:800}
.db-sec-line{flex:1;height:1px;background:#232a3d}
.db-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.db-tile{background:#151b2c;border:1px solid #232a3d;border-radius:12px;padding:16px;transition:.16s}
.db-tile:hover{border-color:var(--acc);transform:translateY(-2px)}
.db-tile-top{display:flex;justify-content:space-between;color:#fff;font-weight:800}
.db-tile-top small{color:#6b7590;font-weight:700}
.db-tile-p{display:block;margin-top:8px;font-size:1.15rem;color:var(--acc);direction:ltr}
.db-tile-ch{font-style:normal;font-weight:800;font-size:.88rem;direction:ltr;display:block;text-align:left;margin-top:2px}
.db-tile-m{display:flex;justify-content:space-between;margin-top:4px;font-size:.78rem;color:#6b7590}
.db-rows{display:grid;gap:1px;background:#232a3d;border:1px solid #232a3d;border-radius:12px;overflow:hidden}
.db-row{display:flex;align-items:center;gap:14px;background:#121828;padding:12px 18px}
.db-row:hover{background:#1a2133}
.db-row b{color:#fff;flex:1}
.db-row small{color:#6b7590}
.db-row-p{color:var(--acc);font-weight:800;direction:ltr}
.db-row i{font-style:normal;font-weight:800;font-size:.88rem;direction:ltr}
.db-pricebox{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;background:#151b2c;border:1px solid #232a3d;border-radius:14px;padding:28px;margin-bottom:20px}
.db-price-main small{color:#6b7590}
.db-price-num{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:800;color:var(--acc);direction:ltr}
.db-ch{font-style:normal;font-weight:800;padding:3px 12px;border-radius:7px;direction:ltr;display:inline-block;margin-top:6px;background:#12261d}
.db-ch.dn{background:#2d1519}
.db-price-side{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;align-content:center}
.db-spark{width:100%;max-width:560px;height:58px;margin-top:16px}
.db-spark.up{color:var(--up)} .db-spark.dn{color:var(--dn)}
.db-faq{max-width:1220px;margin-inline:auto;padding-inline:20px}
.db-faq-i{background:#151b2c;border:1px solid #232a3d;border-radius:12px;margin-bottom:9px;overflow:hidden}
.db-faq-i summary{padding:15px 20px;cursor:pointer;font-weight:800;color:#fff;list-style:none}
.db-faq-i summary::-webkit-details-marker{display:none}
.db-faq-i summary::after{content:"＋";color:var(--acc);float:left}
.db-faq-i[open] summary::after{content:"－"}
.db-faq-i p{padding:0 20px 16px;color:#9aa4bd;font-size:.94rem}
.db-art{margin:22px auto 0;border-radius:12px;overflow:hidden;border:1px solid #232a3d;max-width:820px}
.db-article{max-width:1220px}
.db-lead{font-size:1.12rem;color:#fff;font-weight:600;border-inline-start:4px solid var(--acc);padding-inline-start:16px;margin-bottom:16px}
.db-article h2{color:#fff;font-size:1.2rem;font-weight:800;margin:26px 0 8px}
.db-article p{color:#aab3c9}
.db-related{max-width:1220px;margin-inline:auto;padding-inline:20px}
.db-related h2{color:#fff;font-size:1.05rem;margin-bottom:12px}
.db-kv{max-width:1220px;margin-inline:auto;padding-inline:20px}
.db-cta{display:flex;justify-content:space-between;align-items:center;gap:16px;background:linear-gradient(135deg,var(--pri),var(--acc));border-radius:12px;padding:20px 24px;color:#fff;margin:26px auto 0;max-width:1180px;flex-wrap:wrap}
.db-cta a{background:#0f1420;color:#fff;padding:9px 20px;border-radius:9px;font-weight:800}
.db-crumbs{max-width:1220px;margin:16px auto 0;padding-inline:20px;font-size:.8rem;color:#6b7590}
.db-crumbs a{color:#9aa4bd}
.db-foot{margin-top:64px;background:#0a0e18;border-top:1px solid #232a3d;padding-block:38px 24px}
.db-foot-in{max-width:1220px;margin-inline:auto;padding-inline:20px}
.db-foot-brand{font-weight:800;color:#fff;font-size:1.2rem}
.db-foot-brand small{color:#6b7590;font-weight:400;margin-inline-start:8px}
.db-foot-about{color:#9aa4bd;max-width:460px;margin-block:10px 16px;font-size:.92rem}
.db-foot-nav{display:flex;gap:18px;flex-wrap:wrap;font-size:.85rem;color:#9aa4bd}
.db-warn{color:#e8c76a;font-size:.82rem;margin-top:14px}
.db-disc{color:#6b7590;font-size:.8rem;margin-top:8px}
.db-attr{color:#4d5670;font-size:.78rem;margin-top:6px}

.db-sec-h{color:#fff;font-size:1.05rem;font-weight:800;margin-bottom:12px}


/* 移动端汉堡菜单(纯CSS) */
.db-navtog{position:absolute;opacity:0;pointer-events:none;height:0}
.db-burger{display:none;width:42px;height:38px;border:1px solid #232a3d;border-radius:10px;
  flex-direction:column;gap:4px;align-items:center;justify-content:center;cursor:pointer;
  background:#121828;color:#fff;flex:none}
.db-burger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px}

@media(max-width:880px){
 .db-burger{display:inline-flex;order:9;margin-inline-start:auto}
 .db-nav{display:none;position:absolute;top:100%;inset-inline:10px;flex-direction:column;
   background:#121828;border:1px solid #232a3d;border-top:none;border-radius:0 0 14px 14px;
   padding:8px;z-index:60;box-shadow:0 20px 40px rgba(0,0,0,.45)}
 .db-nav a{padding:12px 14px;border-bottom:1px solid #232a3d;border-radius:0}
 .db-nav a:last-child{border-bottom:none}
 .db-navtog:checked ~ .db-nav{display:flex}
 .db-top{position:relative}
 .db-clock{display:none}
}

/* 页面H1 */
.db-h1x{font-size:1.4rem;font-weight:800;color:#fff;margin:16px 0 4px}