/* ===== 头号工具 tools-no1.com 全站样式（纯静态、无外部依赖） ===== */
:root{
  --primary:#0f766e; --primary-d:#0b5c55; --primary-l:#ccfbf1; --primary-ll:#f0fdfa;
  --ink:#152522; --muted:#5b6b67; --faint:#8a9794;
  --line:#e3eae8; --bg:#f6f8f8; --card:#ffffff;
  --ok:#15803d; --ok-bg:#dcfce7; --warn:#b45309; --warn-bg:#fef3c7; --danger:#b91c1c; --danger-bg:#fee2e2;
  --radius:14px; --shadow:0 1px 2px rgba(15,40,36,.05),0 6px 20px rgba(15,40,36,.06);
  --maxw:1080px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-d)}
h1,h2,h3{line-height:1.3;color:var(--ink);margin:0 0 .5em}
p{margin:0 0 1em}
.container{max-width:var(--maxw);margin:0 auto;padding:0 18px}
.muted{color:var(--muted)}
.small{font-size:13.5px}

/* ===== 顶部导航 ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:saturate(1.2) blur(6px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:18px;height:60px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:19px;color:var(--ink);white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand .logo{width:32px;height:32px;flex:0 0 32px;border-radius:9px;background:var(--primary);display:grid;place-items:center;color:#fff}
.brand b{color:var(--primary)}
.nav-links{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav-links a{padding:7px 12px;border-radius:9px;color:var(--muted);font-size:15px;font-weight:500}
.nav-links a:hover{background:var(--primary-ll);color:var(--primary)}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:10px;place-items:center;cursor:pointer}
.nav-toggle span,.nav-toggle span:before,.nav-toggle span:after{content:"";display:block;width:20px;height:2px;background:var(--ink);position:relative;transition:.2s}
.nav-toggle span:before{position:absolute;top:-6px}.nav-toggle span:after{position:absolute;top:6px}

/* ===== 首页 hero ===== */
.hero{background:linear-gradient(180deg,var(--primary-ll),var(--bg));padding:54px 0 40px;border-bottom:1px solid var(--line)}
.hero h1{font-size:34px;font-weight:900;letter-spacing:-.5px;margin-bottom:12px}
.hero h1 .hl{color:var(--primary)}
.hero p.lead{font-size:17px;color:var(--muted);max-width:680px}
.search-wrap{position:relative;max-width:560px;margin:22px 0 6px}
.search-wrap svg{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--faint)}
.search{width:100%;height:52px;padding:0 16px 0 46px;font-size:16px;border:1.5px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow);outline:none}
.search:focus{border-color:var(--primary)}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--primary-d);background:#fff;border:1px solid var(--primary-l);padding:5px 12px;border-radius:999px;font-weight:600}

/* ===== 工具卡片网格 ===== */
.section{padding:40px 0 8px}
.section-head{display:flex;align-items:baseline;gap:12px;margin-bottom:18px;border-left:4px solid var(--primary);padding-left:12px}
.section-head h2{font-size:22px;margin:0}
.section-head .en{color:var(--faint);font-size:13px;font-weight:500;letter-spacing:1px;text-transform:uppercase}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(238px,1fr));gap:14px}
.tool-card{display:flex;gap:13px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;transition:.16s;box-shadow:var(--shadow)}
.tool-card:hover{transform:translateY(-2px);border-color:var(--primary-l);box-shadow:0 10px 26px rgba(15,118,110,.12)}
.tool-card .ic{width:42px;height:42px;flex:0 0 42px;border-radius:11px;background:var(--primary-ll);color:var(--primary);display:grid;place-items:center}
.tool-card h3{font-size:16px;margin:0 0 3px;font-weight:700;color:var(--ink)}
.tool-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.55}
.tool-card .tags{margin-top:7px;display:flex;gap:6px;flex-wrap:wrap}
.tag{font-size:12.5px;color:var(--primary-d);background:var(--primary-ll);border-radius:6px;padding:1px 7px;font-weight:600}
.no-result{display:none;padding:30px;text-align:center;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:var(--radius)}

/* 卖点/文案区 */
.feat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:8px 0}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;text-align:center}
.feat .ic{width:46px;height:46px;margin:0 auto 10px;border-radius:12px;background:var(--primary-ll);color:var(--primary);display:grid;place-items:center}
.feat b{display:block;font-size:15.5px;margin-bottom:3px}
.feat span{font-size:13px;color:var(--muted)}
.prose{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;box-shadow:var(--shadow)}
.prose h2{font-size:21px;margin-top:8px}
.prose h3{font-size:16.5px;margin-top:18px;color:var(--primary-d)}

/* ===== 工具页 ===== */
.crumb{font-size:13px;color:var(--muted);padding:18px 0 0}
.crumb a{color:var(--muted)}.crumb a:hover{color:var(--primary)}
.tool-page h1{font-size:27px;font-weight:800;margin:10px 0 6px}
.tool-sub{color:var(--muted);margin-bottom:22px;max-width:760px}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:22px}
.panel h2{font-size:17px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.panel h2:before{content:"";width:5px;height:18px;background:var(--primary);border-radius:3px}
label.fld{display:block;font-size:14px;font-weight:600;margin:12px 0 6px;color:var(--ink)}
input[type=text],input[type=number],input[type=date],input[type=datetime-local],select,textarea{
  width:100%;padding:11px 13px;font-size:16px;border:1.5px solid var(--line);border-radius:10px;background:#fcfdfd;color:var(--ink);outline:none;font-family:inherit}
input:focus,select:focus,textarea:focus{border-color:var(--primary);background:#fff}
textarea{resize:vertical;min-height:130px;line-height:1.6;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:16px}
.row{display:flex;gap:14px;flex-wrap:wrap}.row>div{flex:1;min-width:150px}
.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:44px;padding:0 20px;border-radius:11px;border:1.5px solid var(--primary);background:var(--primary);color:#fff;font-size:15px;font-weight:700;cursor:pointer;transition:.15s;font-family:inherit}
.btn:hover{background:var(--primary-d);border-color:var(--primary-d);color:#fff}
.btn.ghost{background:#fff;color:var(--primary)}
.btn.ghost:hover{background:var(--primary-ll)}
.btn.subtle{background:#eef3f2;border-color:var(--line);color:var(--ink)}
.btn.subtle:hover{background:#e3eae8}
.btn.sm{height:36px;padding:0 13px;font-size:13.5px;border-radius:9px}
.checks{display:flex;flex-wrap:wrap;gap:14px;margin:10px 0}
.checks label{display:inline-flex;align-items:center;gap:7px;font-size:14.5px;cursor:pointer;font-weight:500}
input[type=checkbox],input[type=radio]{width:18px;height:18px;accent-color:var(--primary);cursor:pointer}
input[type=range]{width:100%;accent-color:var(--primary)}
input[type=color]{width:56px;height:44px;padding:3px;border:1.5px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}
.result{background:var(--primary-ll);border:1px solid var(--primary-l);border-radius:11px;padding:15px 16px;margin-top:12px;white-space:pre-wrap;word-break:break-word;font-size:14.5px;min-height:20px}
.result:empty:before{content:"结果将显示在这里";color:var(--faint)}
.result.err{background:var(--danger-bg);border-color:#fecaca;color:var(--danger)}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:11px;margin-top:6px}
.stat{background:#f7faf9;border:1px solid var(--line);border-radius:11px;padding:12px 14px}
.stat .n{font-size:24px;font-weight:800;color:var(--primary);line-height:1.2}
.stat .k{font-size:12.5px;color:var(--muted)}
.calc-pad{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;max-width:380px}
.calc-pad .btn{height:52px;padding:0;font-size:19px;border-radius:11px}
.calc-pad .op{background:#eef3f2;border-color:var(--line);color:var(--primary-d)}
.calc-pad .eq{background:var(--primary);border-color:var(--primary);color:#fff;grid-column:span 2}
.calc-screen{grid-column:1/-1;background:#0b2b28;color:#d7fffa;border-radius:11px;padding:14px 16px;font-size:26px;text-align:right;min-height:60px;font-family:ui-monospace,Menlo,monospace;word-break:break-all}
.dropzone{border:2px dashed var(--primary-l);border-radius:12px;padding:30px;text-align:center;color:var(--muted);cursor:pointer;background:var(--primary-ll);transition:.15s}
.dropzone.drag{background:var(--primary-l);border-color:var(--primary)}
table.data{width:100%;border-collapse:collapse;font-size:14px;margin-top:8px}
table.data th,table.data td{border:1px solid var(--line);padding:8px 10px;text-align:right}
table.data th{background:#f3f7f6;font-weight:700}
table.data td:first-child,table.data th:first-child{text-align:left}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.pill{display:inline-block;padding:3px 12px;border-radius:999px;font-size:13px;font-weight:700}
.pill.ok{background:var(--ok-bg);color:var(--ok)}.pill.warn{background:var(--warn-bg);color:var(--warn)}.pill.danger{background:var(--danger-bg);color:var(--danger)}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:11px;padding:0 16px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;list-style:none;position:relative;padding-right:30px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";position:absolute;right:4px;top:12px;font-size:22px;color:var(--primary);font-weight:400}
.faq details[open] summary:after{content:"–"}
.faq details p{padding:0 0 14px;color:var(--muted);margin:0}

/* 相关工具 / 页脚 */
.related{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:11px;margin-bottom:30px}
.related a{background:#fff;border:1px solid var(--line);border-radius:11px;padding:12px 14px;font-size:14.5px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:9px}
.related a:hover{border-color:var(--primary-l);color:var(--primary)}
.site-footer{border-top:1px solid var(--line);background:#fff;margin-top:40px;padding:30px 0; color:var(--muted);font-size:13.5px}
.footer-grid{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.site-footer a{color:var(--muted);margin-right:14px}
.site-footer a:hover{color:var(--primary)}

#toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);background:#0b2b28;color:#fff;padding:11px 22px;border-radius:999px;font-size:14.5px;opacity:0;pointer-events:none;transition:.25s;z-index:99;box-shadow:0 8px 24px rgba(0,0,0,.2)}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
#backTop{position:fixed;right:20px;bottom:24px;width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--primary);box-shadow:var(--shadow);cursor:pointer;display:none;place-items:center;z-index:60}
#backTop.show{display:grid}

/* ===== 响应式 ===== */
@media (max-width:760px){
  .nav-links{position:absolute;top:60px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 14px 14px;gap:2px;display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 12px}
  .nav-toggle{display:grid}
  .hero{padding:38px 0 30px}
  .hero h1{font-size:26px}
  .feat-strip{grid-template-columns:1fr 1fr}
  .two-col{grid-template-columns:1fr}
  .tool-page h1{font-size:23px}
  .panel{padding:17px}
  .btn.sm{height:42px;padding:0 15px;font-size:14px}
  .btn{min-height:44px}
  .grid{grid-template-columns:1fr 1fr;gap:10px}
  .tool-card{padding:13px;gap:10px}
  .tool-card .ic{width:36px;height:36px;flex-basis:36px}
  .tool-card p{display:none}
}
@media (max-width:430px){.grid{grid-template-columns:1fr}.feat-strip{grid-template-columns:1fr}}

/* ===== 裂变：页内二维码 / 结果分享卡 ===== */
.share-box{display:flex;align-items:center;gap:18px;background:var(--primary-ll);border:1px solid #cdeae5;border-radius:var(--radius);padding:16px 18px;margin:20px 0}
.share-box canvas#pageQR{width:116px;height:116px;flex:0 0 116px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:6px}
.share-box b{font-size:16px;display:block;margin-bottom:4px}
.share-box p{margin:0;color:var(--muted);font-size:14px}
.share-preview{margin-top:14px;text-align:center}
.share-preview[hidden]{display:none}
[hidden]{display:none!important}
.share-preview img{max-width:300px;width:100%;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);display:block;margin:0 auto 12px;background:#fff}
.wm-opt{display:flex;align-items:center;gap:7px;font-size:14px;color:var(--muted);margin-top:10px}
.wm-opt input{width:auto;margin:0}
@media (max-width:640px){.share-box{gap:14px;padding:14px}.share-box canvas#pageQR{width:104px;height:104px;flex-basis:104px}.share-preview img{max-width:264px}}

/* ===== 导购(CPS)相关好物位 ===== */
.aff-box h2{font-size:17px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.aff-box h2:before{content:"";width:5px;height:18px;background:var(--primary);border-radius:3px}
.aff-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.aff-card{position:relative;display:flex;flex-direction:column;gap:4px;background:#f7faf9;border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:var(--ink);transition:.15s}
.aff-card:hover{border-color:var(--primary);background:var(--primary-ll);color:var(--ink)}
.aff-card b{font-size:15px;font-weight:700;padding-right:58px;line-height:1.4}
.aff-desc{font-size:13px;color:var(--muted);line-height:1.55}
.aff-go{position:absolute;right:12px;top:12px;font-size:12px;font-weight:700;color:var(--primary);background:#fff;border:1px solid var(--primary-l);border-radius:999px;padding:2px 10px;white-space:nowrap}
.aff-note{font-size:12.5px;color:var(--faint);margin:12px 0 0}
@media (max-width:640px){.aff-grid{grid-template-columns:1fr}}

/* ===== AI Business Toolkit (/ai/) ===== */
.nav-links a.on{background:var(--primary-l);color:var(--primary-d)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0 6px}
.ai-cta{display:inline-block;background:var(--primary);color:#fff!important;font-weight:700;border-radius:11px;padding:11px 20px;font-size:15px;transition:.15s;border:1px solid var(--primary)}
.ai-cta:hover{background:var(--primary-d);color:#fff!important}
.ai-cta-big{padding:14px 26px;font-size:16px}
.ai-ghost{display:inline-flex;align-items:center;border:1px solid var(--line);background:#fff;color:var(--ink)!important;border-radius:11px;padding:11px 20px;font-weight:600;font-size:15px}
.ai-ghost:hover{border-color:var(--primary);color:var(--primary)!important}
.stars{color:#e0a800;letter-spacing:1px;font-size:14px;font-weight:700;white-space:nowrap}
.cat-blurb{color:var(--muted);font-size:14.5px;margin:-4px 0 14px}
.pick-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.pick-card{display:flex;flex-direction:column;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);transition:.15s;color:var(--ink)}
.pick-card:hover{border-color:var(--primary);transform:translateY(-2px);color:var(--ink)}
.pick-top{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:16.5px}
.pick-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.6;flex:1}
.pick-go{font-size:13px;font-weight:700;color:var(--primary)}
.how-pick{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.how-pick>div{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.how-pick b{display:block;font-size:16px;margin-bottom:2px}
.how-pick span{color:var(--primary);font-weight:700;font-size:13.5px;display:block;margin-bottom:6px}
.how-pick p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.6}
.chk-list{list-style:none;padding-left:4px;margin:6px 0}
.chk-list li{position:relative;padding:5px 0 5px 30px}
.chk-list li:before{content:"";position:absolute;left:2px;top:11px;width:16px;height:16px;border-radius:50%;background:var(--primary-l);}
.chk-list li:after{content:"";position:absolute;left:7px;top:14px;width:5px;height:9px;border:solid var(--primary);border-width:0 2px 2px 0;transform:rotate(45deg)}
.step-list{padding-left:22px;line-height:2.05;margin:6px 0 14px}
.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.pc-pros ul,.pc-cons ul{padding-left:20px;margin:6px 0 0;font-size:14.5px;line-height:1.85}
.pc-pros h2{color:var(--ok)}
.pc-cons h2{color:var(--warn)}
.pc-cons ul li::marker{color:var(--warn)}
.price-note{font-size:13px;color:var(--faint);font-style:italic;margin:12px 0 0}
.disclose{font-size:12.5px;color:var(--faint);background:#f7faf9;border:1px dashed var(--line);border-radius:10px;padding:11px 14px;margin:18px 0;line-height:1.7}
.ai-hero-panel .ai-cta{margin-top:2px}
.related.ai-related{grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.related.ai-related a{flex-direction:column;align-items:flex-start;gap:2px;line-height:1.4}
.related.ai-related a span{font-size:12.5px;color:var(--faint);font-weight:400}
.round-stage{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin:14px 0;box-shadow:var(--shadow)}
.round-stage h3{color:var(--primary-d);margin-bottom:4px}
.round-list{list-style:none;padding:0;margin:8px 0 0}
.round-list li{padding:8px 0;border-top:1px dashed var(--line);font-size:15px}
.round-list li:first-child{border-top:none}
.vs-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:16px 0}
.vs-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.vs-card h3{margin-bottom:8px}
.ai-cross{display:flex;align-items:center;gap:16px;background:linear-gradient(120deg,var(--primary),var(--primary-d));color:#fff!important;border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow)}
.ai-cross b{font-size:18px;white-space:nowrap;color:#fff}
.ai-cross span{font-size:14.5px;opacity:.92;line-height:1.6}
.ai-cross:hover{color:#fff!important;opacity:.96}
.fish-cross{display:flex;align-items:center;gap:16px;background:linear-gradient(120deg,#075985,#0e7490);color:#fff!important;border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow)}
.fish-cross b{font-size:18px;white-space:nowrap;color:#fff}
.fish-cross span{font-size:14.5px;opacity:.93;line-height:1.6}
.fish-cross:hover{color:#fff!important;opacity:.96}
.fish-badge{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.02em;color:#075985;background:#e0f2fe;border:1px solid #bae6fd;border-radius:999px;padding:3px 10px;margin-right:6px}
.price-tier{font-weight:800;color:#075985;letter-spacing:.02em}
.spec-table{width:100%;border-collapse:collapse;margin:14px 0;font-size:14.5px}
.spec-table th,.spec-table td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
.spec-table th{background:var(--muted,#f1f5f9);font-weight:700}
.spec-table td:first-child{font-weight:700;white-space:nowrap}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:14px 0;border-radius:var(--radius)}
.table-wrap .spec-table{margin:0;min-width:460px}
@media (max-width:760px){.how-pick{grid-template-columns:1fr}.pros-cons,.vs-grid{grid-template-columns:1fr}.hero h1{font-size:27px}.ai-cross,.fish-cross{flex-direction:column;align-items:flex-start;gap:6px}.ai-cross b,.fish-cross b{white-space:normal}.spec-table{font-size:13px}.table-wrap .spec-table{min-width:460px}.spec-table td:first-child{white-space:normal}}