/* ToolTide — single stylesheet, no framework */
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:#0f172a;background:#f8fafc;line-height:1.55}
.wrap{max-width:1000px;margin:0 auto;padding:0 20px}
a{color:#0e7490}
h1{font-size:clamp(1.7rem,3.5vw,2.3rem);line-height:1.2;margin:6px 0 14px;letter-spacing:-.02em}
h2{font-size:1.25rem;margin:26px 0 10px}

/* header / nav */
.site-head{background:#fff;border-bottom:1px solid #e2e8f0}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap}
.logo{font-weight:800;font-size:1.25rem;color:#0e7490;text-decoration:none;letter-spacing:-.02em}
.site-head nav{display:flex;gap:16px;flex-wrap:wrap}
.site-head nav a{color:#475569;text-decoration:none;font-size:.95rem;font-weight:500}
.site-head nav a:hover{color:#0e7490}
.nav-all{font-weight:700}

/* breadcrumbs */
.crumbs{font-size:.85rem;color:#64748b;margin-top:16px}
.crumbs a{color:#64748b;text-decoration:none}
.crumbs a:hover{color:#0e7490}

/* hero */
.hero{padding:44px 0 10px}
.hero p{color:#475569;max-width:640px;margin-bottom:18px}
#tool-search{width:100%;max-width:560px;padding:13px 16px;border:1px solid #cbd5e1;border-radius:12px;font-size:1rem;background:#fff}
#tool-search:focus{outline:2px solid #0e7490;border-color:#0e7490}

/* card grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin:16px 0}
.card{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:7px;text-decoration:none;color:inherit;transition:box-shadow .15s,transform .15s,border-color .15s}
.card:hover{border-color:#67e8f9;box-shadow:0 6px 20px rgba(14,116,144,.10);transform:translateY(-2px)}
.card-emoji{font-size:1.5rem}
.card-title{font-weight:700;font-size:1rem}
.card-desc{font-size:.83rem;color:#64748b;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cat{margin-top:26px}
.cat-blurb{color:#475569;font-size:.95rem;margin-bottom:6px;max-width:680px}

/* article */
main{padding-bottom:20px}
article>.page-emoji{font-size:2.3rem;margin-top:18px}
.intro p{margin:9px 0;color:#334155}
.seo-block{margin-top:28px}
.howto{padding-left:22px}
.howto li{margin:8px 0;color:#334155}

/* tool card */
.tool{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:22px;margin:20px 0;box-shadow:0 1px 3px rgba(15,23,42,.04)}
.fields{display:flex;flex-wrap:wrap;gap:14px;margin:6px 0}
.fields .field{flex:1;min-width:150px;display:flex;flex-direction:column;gap:6px}
.field label{font-size:.83rem;font-weight:600;color:#475569}
.field label small{font-weight:400;color:#94a3b8}
input,select,textarea{font:inherit;color:inherit;padding:10px 12px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;width:100%}
textarea{resize:vertical;line-height:1.6}
input:focus,select:focus,textarea:focus{outline:2px solid #0e7490;border-color:#0e7490}
input[type=range]{padding:0;accent-color:#0e7490}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0;align-items:center}
.chip{padding:8px 14px;border-radius:999px;border:1px solid #cbd5e1;background:#fff;cursor:pointer;font:inherit;font-size:.9rem;font-weight:500;color:#334155}
.chip:hover{border-color:#0e7490;color:#0e7490}
.chip.active{background:#0e7490;border-color:#0e7490;color:#fff}
#tip-custom{width:110px}
.pane .inline{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:1.05rem}
.pane .inline input{width:120px}
.pane .inline b{font-size:1.3rem;color:#0e7490}
.of,.pct,.pct2{color:#64748b}

.result{background:#ecfeff;border:1px solid #a5f3fc;border-radius:12px;padding:16px 18px;margin:14px 0}
.result-num{font-size:2rem;font-weight:800;color:#155e75;word-break:break-word}
.result-unit{color:#0e7490;margin-left:8px;font-weight:600}
.result-formula{font-size:.85rem;color:#475569;margin-top:6px}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin-top:14px}
.stat{background:#f1f5f9;border-radius:10px;padding:12px;word-break:break-word}
.stat b{display:block;font-size:1.12rem;color:#0f172a}
.stat span{font-size:.75rem;color:#64748b}

/* countdown */
.cd-event{font-size:1.15rem;font-weight:700;color:#0e7490}
.cd-big{font-size:clamp(4rem,14vw,7rem);font-weight:900;color:#0e7490;line-height:1.05;font-variant-numeric:tabular-nums}
.cd-big-label{color:#64748b;font-size:1.05rem;margin-bottom:8px}
.cd-clock{font-size:1.35rem;letter-spacing:2px;font-variant-numeric:tabular-nums;margin-top:4px}

/* info boxes */
.info-box{background:#fffbeb;border:1px solid #fde68a;border-radius:12px;padding:14px;margin:16px 0;font-size:.95rem;color:#713f12}
.info-box.tip{background:#f0fdf4;border-color:#bbf7d0;color:#14532d}

/* faq */
.faq{border-bottom:1px solid #e2e8f0;padding:13px 0}
.faq summary{cursor:pointer;font-weight:600;color:#0f172a}
.faq summary:hover{color:#0e7490}
.faq p{margin-top:9px;color:#334155}

/* tables */
.copytable{width:100%;border-collapse:collapse;margin-top:14px;background:#fff;border:1px solid #e2e8f0;border-radius:12px;overflow:hidden}
.copytable th,.copytable td{padding:8px 12px;border-bottom:1px solid #f1f5f9;text-align:left;font-size:.95rem}
.copytable th{background:#f8fafc;color:#64748b;font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}
.copytable td:last-child{font-weight:600}
.copytable tr:last-child td{border-bottom:none}

/* typing test */
.type-passive{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:14px;line-height:1.9;letter-spacing:.4px;margin-bottom:10px;min-height:88px}
.tp-ok{color:#059669}
.tp-bad{color:#b91c1c;background:#fee2e2;border-radius:3px}
.tp-cur{background:#fef08a;border-radius:2px}
#type-in{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
#type-timer{font-size:1.5rem;font-weight:700;color:#0e7490;margin-top:10px;font-variant-numeric:tabular-nums}

/* names */
.names-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;margin:14px 0}
.name-card{padding:12px 10px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;cursor:pointer;font:inherit;font-size:.95rem;font-weight:600;color:#0f172a;text-align:center;word-break:break-word}
.name-card:hover{border-color:#0e7490;color:#0e7490}
.name-card.copied{background:#0e7490;border-color:#0e7490;color:#fff}

/* password */
.pw-out-row{display:flex;gap:8px;margin:6px 0 12px}
#pw-out{flex:1;font-family:ui-monospace,Menlo,Consolas,monospace;letter-spacing:1px;font-size:1.05rem}
.pw-strength{display:flex;align-items:center;gap:10px;margin:0 0 14px;font-size:.85rem;color:#475569}
.pw-bar{display:block;height:9px;border-radius:5px;background:#0e7490;width:0%;transition:width .25s;flex:0 0 60%}
.pw-w{background:#dc2626}.pw-f{background:#d97706}.pw-s{background:#0e7490}.pw-x{background:#16a34a}

/* buttons */
.btn{background:#0e7490;color:#fff;border:none;border-radius:10px;padding:11px 20px;font:inherit;font-weight:600;cursor:pointer}
.btn:hover{background:#155e75}
.btn-sm{padding:6px 12px;font-size:.85rem;border-radius:8px}

/* ads (render only when configured) */
.ad{margin:20px 0;min-height:0}

/* footer */
.site-foot{margin-top:52px;border-top:1px solid #e2e8f0;background:#fff;padding:26px 0 34px;font-size:.88rem;color:#64748b}
.site-foot nav{display:flex;gap:18px;flex-wrap:wrap;margin-bottom:10px}
.site-foot a{color:#475569;text-decoration:none}
.site-foot a:hover{color:#0e7490}
.aff-note{margin-top:6px;font-size:.8rem;color:#94a3b8}

/* static pages */
.static-page{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:28px;margin:18px 0}
.static-page h2{margin-top:20px}
.static-page p,.static-page li{color:#334155;margin:9px 0}
.static-page ul{padding-left:22px}

@media(max-width:560px){
  .nav-row{justify-content:center}
  .fields .field{min-width:130px}
  .result-num{font-size:1.6rem}
}

/* games */
.game-frame{position:relative;margin:18px 0;border:1px solid #e2e8f0;border-radius:16px;overflow:hidden;background:#0f172a}
.game-frame iframe{display:block;width:100%;height:min(72vh,640px);border:0}
.game-frame #fs-btn{position:absolute;top:10px;right:10px;background:rgba(15,23,42,.6);color:#fff;border:0;border-radius:8px;width:38px;height:38px;font-size:1.1rem;cursor:pointer}
.game-frame #fs-btn:hover{background:#0e7490}
.controls-line{color:#64748b;font-size:.9rem;margin:10px 0 0}

/* ---- game-first mobile layout ---- */
.game-frame{margin:10px 0 0}
.game-frame iframe{height:min(64vh,600px)}
.title-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px}
.title-row h1{margin:0;font-size:1.55rem}
article>.title-emoji{font-size:1.5rem}
@media (max-width:640px){
  .site-head{padding:8px 0}
  .wrap{padding:0 12px}
  .game-frame{margin:8px 0 0;border-radius:10px}
  .game-frame iframe{height:min(58vh,520px)}
  .title-row h1{font-size:1.3rem}
  .title-row .controls-line{width:100%;margin:2px 0 0}
  .hero{padding:22px 0 8px}
  .hero h1{font-size:1.5rem}
}

/* ---- daily spotlight card ---- */
.spotlight-cat{margin-top:0!important;margin-bottom:8px}
.spot-card{background:linear-gradient(135deg,rgba(34,211,238,.08),rgba(167,139,250,.08));
  border:1px solid rgba(34,211,238,.25);border-radius:14px;padding:16px 18px;position:relative;overflow:hidden}
.spot-card::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;
  background:radial-gradient(circle,rgba(34,211,238,.06) 0%,transparent 60%);pointer-events:none}
.spot-label{font-size:.78rem;font-weight:700;letter-spacing:1px;color:#22d3ee;text-transform:uppercase;margin-bottom:8px}
.spot-link{display:flex;flex-direction:column;gap:4px;color:inherit}
.spot-link:hover .card-title{color:#22d3ee}
.spot-link .card-emoji{font-size:2rem}
.spot-play{transition:transform .15s}
.spot-link:hover .spot-play{transform:scale(1.05)}
@media (max-width:640px){.spot-card{padding:12px 14px}.spot-card .card-emoji{font-size:1.6rem}}

/* ---- 全站视觉统一 polish ---- */
.hero{padding:28px 0 16px}
.hero h1{font-size:clamp(1.6rem,5vw,2.2rem);letter-spacing:.5px;
  background:linear-gradient(135deg,#22d3ee,#a78bfa,#f472b6);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{font-size:.95rem;opacity:.75;max-width:520px;margin:4px auto 0}
.cat{margin:20px 0}
.cat h2{font-size:1.15rem;letter-spacing:.3px;margin-bottom:10px;
  padding-bottom:6px;border-bottom:1px solid rgba(34,211,238,.15)}
.card{transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s}
.card:hover{transform:translateY(-3px);box-shadow:0 6px 20px rgba(34,211,238,.12)}
.card-emoji{transition:transform .2s ease-out}
.card:hover .card-emoji{transform:scale(1.15)}
.seo-block{margin:18px 0;padding:14px 16px;border-radius:12px;
  background:rgba(20,26,53,.5);border:1px solid rgba(255,255,255,.06)}
.seo-block h2{font-size:1.05rem;margin:0 0 8px}
.howto li{margin:6px 0;line-height:1.5}
.faq{margin:8px 0}
.seo-block ul{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:7px}
.seo-block ul li{padding-left:16px;position:relative;line-height:1.5}
.seo-block ul li::before{content:"▸";position:absolute;left:0;color:#22d3ee}
.seo-block ul li a{color:#7dd3fc;font-weight:600;text-decoration:none}
.seo-block ul li a:hover{text-decoration:underline}
.faq summary{font-weight:700;cursor:pointer;padding:6px 0}
.faq p{margin:6px 0;padding-left:12px;border-left:2px solid rgba(34,211,238,.2);line-height:1.5}

/* ---- UX detail polish ---- */
html{scroll-behavior:smooth}
.cat-blurb{line-height:1.65;opacity:.82;max-width:560px;margin:4px auto 0}
.hero h1{letter-spacing:.5px;text-shadow:0 0 40px rgba(34,211,238,.15)}
.card{border:1px solid rgba(255,255,255,.06)}
.card:hover{border-color:rgba(34,211,238,.3)}
.controls-line{opacity:.7;font-size:.85rem;margin-top:8px}
.spot-label{letter-spacing:1.5px;text-transform:uppercase}
.spot-card::after{content:'';position:absolute;top:0;right:0;width:80px;height:80px;
  background:radial-gradient(circle at top right,rgba(167,139,250,.08),transparent 70%);pointer-events:none}
.game-frame iframe{border-radius:8px}
@media (max-width:640px){
  .hero h1{font-size:clamp(1.4rem,5.5vw,1.8rem)}
  .cat h2{font-size:1rem}
  .game-frame iframe{height:min(56vh,480px)}
}

/* ---- micro-interaction polish ---- */
.spot-card{cursor:default}
.spot-card:hover{border-color:rgba(34,211,238,.4);box-shadow:0 4px 20px rgba(34,211,238,.1)}
.cat-blurb{margin:4px auto 0;max-width:560px;line-height:1.6;opacity:.8}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}