/* ============================================================
 * 子页共享样式 —— 与首页同一套设计系统（提取自 index.html）
 * 首页本身保持原样不动；新增页面引用本文件。
 * ============================================================ */
:root{
  --paper:#f6f2e9;--paper-2:#efeadc;--card:#fffdf9;
  --ink:#1a1815;--ink-2:#514a3e;--ink-3:#8b8273;
  --line:#e1d9c9;--line-2:#d3c9b4;
  --green:#1f5c4a;--green-2:#2c7a63;--green-soft:#e6efe9;
  --brick:#a2432e;--brick-soft:#f8e7e0;
  --gold:#b5893a;--dark:#14211c;--dark-2:#1d3129;--cream:#f0e6cf;
  --serif:"Songti SC","STSong","SimSun","Noto Serif SC",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --mono:ui-monospace,"SF Mono","Cascadia Mono","Roboto Mono",Menlo,Consolas,monospace;
  --r:14px;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--sans);color:var(--ink);
  background:
    radial-gradient(circle at 12% 8%,rgba(31,92,74,.055),transparent 42%),
    radial-gradient(circle at 88% 0%,rgba(181,137,58,.07),transparent 38%),
    var(--paper);
  line-height:1.6;font-size:15px;
}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.wrap{width:min(1180px,100% - 40px);margin-inline:auto}
a{color:var(--green);text-decoration-thickness:1px;text-underline-offset:2px}

/* ---------- 头部 ---------- */
.site-head{border-bottom:1px solid var(--line);background:rgba(246,242,233,.82);backdrop-filter:blur(8px);position:sticky;top:0;z-index:20}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:18px;letter-spacing:.02em;color:var(--ink);text-decoration:none}
.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--dark);color:var(--cream);display:grid;place-items:center;font-size:16px}
.site-nav{display:flex;gap:4px;flex-wrap:wrap}
.site-nav a{font-size:12.5px;color:var(--ink-2);text-decoration:none;padding:6px 10px;border-radius:8px;transition:.15s}
.site-nav a:hover{background:var(--green-soft);color:var(--green)}
.site-nav a[aria-current=page]{background:var(--dark);color:var(--cream)}
.site-nav a[aria-current=page]:hover{color:var(--cream)}
.head-meta{font-size:12px;color:var(--ink-3);letter-spacing:.06em}

/* ---------- 引入区 ---------- */
.intro{padding:44px 0 26px;max-width:780px}
.eyebrow{margin:0 0 14px;font-size:12px;letter-spacing:.18em;color:var(--green);text-transform:uppercase;display:flex;align-items:center;gap:10px}
.eyebrow::after{content:"";height:1px;flex:0 0 46px;background:var(--line-2)}
h1{margin:0 0 14px;font-family:var(--serif);font-weight:600;font-size:clamp(28px,4vw,42px);line-height:1.25;letter-spacing:-.01em}
.lede{margin:0;color:var(--ink-2);font-size:15.5px;max-width:62ch}

/* ---------- 布局 ---------- */
.shell{display:grid;grid-template-columns:376px minmax(0,1fr);gap:36px;align-items:start;padding-bottom:56px}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;
  position:sticky;top:78px;box-shadow:0 1px 2px rgba(26,24,21,.04),0 12px 30px -24px rgba(26,24,21,.35);
}
.panel-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:18px}
.panel-head h2{margin:0;font-size:13px;letter-spacing:.14em;color:var(--ink-2);font-weight:600}
.panel-head span{font-size:11px;color:var(--ink-3)}

.field{margin-bottom:16px}
.field:last-child{margin-bottom:0}
.field > label,.field-label{display:block;font-size:12px;letter-spacing:.06em;color:var(--ink-3);margin-bottom:7px}
.input-wrap{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:11px;background:#fff;padding:0 12px;transition:border-color .15s,box-shadow .15s}
.input-wrap:focus-within{border-color:var(--green);box-shadow:0 0 0 3px var(--green-soft)}
.input-wrap .prefix,.input-wrap .suffix{font-size:12px;color:var(--ink-3);flex:none}
.input{border:0;background:transparent;width:100%;height:44px;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:17px;color:var(--ink);padding:0}
.input:focus{outline:none}
input[type=number]::-webkit-outer-spin-button,input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
input[type=number]{-moz-appearance:textfield}
select.input{font-family:var(--sans);font-size:14px;height:44px;cursor:pointer;appearance:none;
  background:url("data:image/svg+xml,%3Csvg width='10' height='6' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238b8273'/%3E%3C/svg%3E") no-repeat right 2px center}
.select-wrap{position:relative}
.select-wrap select{width:100%;border:1px solid var(--line);border-radius:11px;background-color:#fff;padding:0 34px 0 12px;color:var(--ink)}
.select-wrap select:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px var(--green-soft)}

.range-row{display:flex;align-items:center;gap:12px}
input[type=range]{-webkit-appearance:none;appearance:none;flex:1;height:22px;background:transparent;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:3px;border-radius:3px;background:var(--line-2)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--green);margin-top:-6.5px;border:2px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.18)}
input[type=range]::-moz-range-track{height:3px;border-radius:3px;background:var(--line-2)}
input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--green);border:2px solid #fff}
.range-val{font-family:var(--mono);font-size:15px;min-width:44px;text-align:right;color:var(--ink)}

.hint{font-size:11.5px;color:var(--ink-3);margin-top:6px;line-height:1.5}
.divider{height:1px;background:var(--line);margin:18px 0}

.presets{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:5px 11px;font-size:12px;color:var(--ink-2);cursor:pointer;transition:.15s;font-family:var(--sans)}
.chip:hover{border-color:var(--green);color:var(--green)}
.chip:focus-visible{outline:2px solid var(--green);outline-offset:2px}

/* ---------- 结果 ---------- */
.results{min-width:0}
.hero{
  background:linear-gradient(160deg,var(--dark) 0%,var(--dark-2) 100%);
  color:var(--cream);border-radius:22px;padding:30px 30px 26px;position:relative;overflow:hidden;
}
.hero::after{content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;border-radius:50%;border:1px solid rgba(240,230,207,.14)}
.hero-label{font-size:12px;letter-spacing:.16em;color:rgba(240,230,207,.62);display:block;margin-bottom:6px}
.hero-num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:clamp(36px,5.2vw,54px);line-height:1.05;letter-spacing:-.02em;color:#fff;display:flex;align-items:baseline;gap:8px}
.hero-num .unit{font-size:14px;font-family:var(--sans);color:rgba(240,230,207,.7);letter-spacing:.1em}
.hero-sub{margin-top:10px;font-size:12.5px;color:rgba(240,230,207,.66)}
.hero-sub b{color:var(--cream);font-family:var(--mono);font-size:14px;font-weight:500}
.hero-foot{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;padding-top:16px;border-top:1px solid rgba(240,230,207,.14)}
.tag{font-size:11.5px;letter-spacing:.04em;padding:4px 10px;border-radius:999px;background:rgba(240,230,207,.1);border:1px solid rgba(240,230,207,.16);color:rgba(240,230,207,.86)}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:14px}
.stats.c3{grid-template-columns:repeat(3,1fr)}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.stat dt{font-size:11.5px;color:var(--ink-3);letter-spacing:.05em;margin:0 0 5px}
.stat dd{margin:0;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:18px;color:var(--ink)}
.stat dd small{font-size:11px;color:var(--ink-3);font-family:var(--sans);margin-left:2px}

.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px 22px;margin-top:16px}
.card-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:14px}
.card-head h3{margin:0;font-family:var(--serif);font-size:17px;font-weight:600;letter-spacing:.01em}
.card-head .note{font-size:11.5px;color:var(--ink-3)}

.insights{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.insight{display:flex;gap:11px;font-size:13.5px;color:var(--ink-2);line-height:1.65}
.insight .dot{flex:none;width:6px;height:6px;border-radius:50%;background:var(--green-2);margin-top:8px}
.insight.warn .dot{background:var(--brick)}
.insight b{color:var(--ink);font-weight:600}
.insight .hl{font-family:var(--mono);color:var(--brick);font-weight:600}
.insight.good .hl{color:var(--green)}

.table-scroll{overflow-x:auto;max-width:100%;-webkit-overflow-scrolling:touch}
.rate-table{width:100%;border-collapse:collapse;font-size:12.5px;margin-top:10px}
.rate-table th,.rate-table td{border:1px solid var(--line);padding:8px 12px;text-align:right}
.rate-table th{background:#faf6ec;font-weight:500;color:var(--ink-3);font-size:11.5px}
.rate-table td:first-child,.rate-table th:first-child{text-align:left}
.rate-table td{font-family:var(--mono);color:var(--ink-2)}
.rate-table tr.hit td{background:var(--brick-soft);color:var(--brick);font-weight:600}

.cmp-table{width:100%;border-collapse:collapse;font-size:13px}
.cmp-table th{text-align:left;font-weight:500;color:var(--ink-3);font-size:11.5px;letter-spacing:.05em;padding:9px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
.cmp-table th:nth-child(2),.cmp-table th:nth-child(3){text-align:right}
.cmp-table td{padding:9px 12px;border-bottom:1px solid #f1ebdf;text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--ink-2);white-space:nowrap}
.cmp-table td:first-child{text-align:left;font-family:var(--sans);color:var(--ink)}
.cmp-table tr:last-child td{border-bottom:0}
.cmp-table tr.total td{border-top:2px solid var(--line-2);font-weight:600;color:var(--ink)}

.alert{margin-top:14px;padding:14px 16px;border-radius:12px;background:var(--brick-soft);border:1px solid #eccdc3;font-size:13px;color:#7d3323;line-height:1.65}
.alert b{color:var(--brick)}
.notice{margin-top:14px;padding:14px 16px;border-radius:12px;background:var(--green-soft);border:1px solid #cfe3da;font-size:13px;color:#1d4a3a;line-height:1.65}
.notice b{color:var(--green)}

.tools{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}
.copy-fallback{margin-top:12px}
.copy-fallback textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-family:var(--mono);font-size:12px;line-height:1.7;color:var(--ink-2);background:#fdfbf6;resize:vertical}
.btn{border:1px solid var(--line-2);background:#fff;border-radius:10px;padding:9px 16px;font-size:13px;color:var(--ink-2);cursor:pointer;font-family:var(--sans);transition:.15s}
.btn:hover{border-color:var(--green);color:var(--green)}
.btn:focus-visible{outline:2px solid var(--green);outline-offset:2px}
.btn.primary{background:var(--dark);border-color:var(--dark);color:var(--cream)}
.btn.primary:hover{background:var(--dark-2);color:#fff}

/* ---------- 变现位（与首页同策略：默认隐藏） ---------- */
.ad-slot{
  display:none;margin-top:16px;border:1px dashed var(--line-2);border-radius:12px;min-height:92px;
  place-items:center;color:#b3a996;font-size:11.5px;letter-spacing:.1em;background:rgba(255,253,249,.6)
}
.support{display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:center}
.qr-box{width:180px;height:180px;border:1px dashed var(--line-2);border-radius:12px;display:grid;place-items:center;padding:8px;background:#fff;position:relative}
.qr-box img{width:100%;height:100%;object-fit:contain;border-radius:8px;cursor:zoom-in}
.qr-box .qr-hint{font-size:10.5px;color:#b3a996;text-align:center;line-height:1.5;padding:6px}
.qr-box.has-img .qr-hint{display:none}
.qr-zoom{position:fixed;inset:0;background:rgba(20,27,23,.82);display:grid;place-items:center;z-index:999;cursor:zoom-out;padding:32px}
.qr-zoom img{width:min(420px,80vmin);height:auto;border-radius:12px;box-shadow:0 18px 60px rgba(0,0,0,.35)}
.qr-zoom p{color:#f0e6cf;text-align:center;margin:14px 0 0;font-size:14px}
.support h3{margin:0 0 6px;font-family:var(--serif);font-size:17px;font-weight:600}
.support p{margin:0;font-size:12.5px;color:var(--ink-3);line-height:1.7}

/* ---------- 说明区 ---------- */
.doc{padding:8px 0 64px;border-top:1px solid var(--line);margin-top:8px}
.doc h2{font-family:var(--serif);font-size:22px;font-weight:600;margin:34px 0 14px}
.doc h3{font-size:14px;margin:22px 0 8px;color:var(--ink)}
.doc p,.doc li{font-size:13.5px;color:var(--ink-2);line-height:1.8}
.doc ul{padding-left:18px}
.doc code{font-family:var(--mono);font-size:12.5px;background:var(--paper-2);padding:1px 5px;border-radius:4px}
.doc .linklist{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;list-style:none;padding:0;margin:16px 0 0}
.doc .linklist a{display:block;border:1px solid var(--line);border-radius:12px;padding:12px 14px;text-decoration:none;background:var(--card);transition:.15s}
.doc .linklist a:hover{border-color:var(--green);box-shadow:0 0 0 3px var(--green-soft)}
.doc .linklist b{display:block;font-size:13.5px;color:var(--ink)}
.doc .linklist span{font-size:11.5px;color:var(--ink-3)}
details.faq{border-bottom:1px solid var(--line);padding:4px 0}
details.faq summary{cursor:pointer;padding:12px 0;font-size:14px;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:12px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"＋";color:var(--ink-3)}
details.faq[open] summary::after{content:"－"}
details.faq p{margin:0 0 14px}

footer{border-top:1px solid var(--line);padding:26px 0 40px;font-size:11.5px;color:var(--ink-3)}
footer p{margin:0 0 6px}

@media (max-width:960px){
  .head-inner{flex-wrap:wrap;height:auto;padding:10px 0;row-gap:6px}
  .shell{grid-template-columns:1fr;gap:20px}
  .panel{position:static}
  .stats{grid-template-columns:repeat(2,1fr)}
  .intro{padding:32px 0 20px}
  .hero{padding:24px}
  .doc .linklist{grid-template-columns:1fr}
}
@media (max-width:520px){
  .wrap{width:calc(100% - 28px)}
  .support{grid-template-columns:1fr;justify-items:start;gap:12px}
  .head-meta{display:none}
  .card{padding:16px}
  .cmp-table th{white-space:normal;font-size:10.5px}
  .cmp-table td{white-space:normal;word-break:break-all;padding:8px 8px;font-size:12px}
  .cmp-table td:first-child{font-size:11px;line-height:1.45;padding-right:4px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}