:root{
  --bg:#fbfcfa;
  --surface:#fff;
  --ink:#142033;
  --muted:#6d7888;
  --line:#e6ebe6;
  --green:#169c62;
  --green-dark:#08794a;
  --green-soft:#edf9f3;
  --blue-soft:#eef6ff;
  --amber-soft:#fff7e8;
  --danger:#c94b4b;
  --shadow:0 18px 55px rgba(20,32,51,.07);
  --radius:22px;
  --max:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}
button,input{font:inherit}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
.site-header{position:sticky;top:0;z-index:20;background:rgba(251,252,250,.9);backdrop-filter:blur(16px);border-bottom:1px solid rgba(230,235,230,.9)}
.nav-wrap{max-width:var(--max);height:72px;margin:auto;padding:0 24px;display:flex;align-items:center;gap:28px}
.brand{display:inline-flex;align-items:center;gap:12px;font-weight:750;letter-spacing:-.035em;font-size:20px;white-space:nowrap}
.brand-mark{width:30px;height:30px;display:grid;grid-template-columns:1fr 1fr;gap:4px}
.brand-mark i{display:block;border-radius:5px;background:var(--green)}
.brand-mark i:nth-child(2),.brand-mark i:nth-child(3){opacity:.78}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-links a{font-size:14px;font-weight:600;color:#687487;padding:26px 0;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--green-dark)}
.nav-links a.active:after{content:"";position:absolute;height:2px;border-radius:2px;background:var(--green);left:0;right:0;bottom:17px}
.nav-search,.mobile-menu{border:0;background:none;color:var(--ink);font-size:27px;width:38px;height:38px;border-radius:10px}
.nav-search:hover,.mobile-menu:hover{background:#eef2ee}
.mobile-menu{display:none;font-size:19px}
.hero{max-width:900px;margin:0 auto;padding:90px 24px 42px;text-align:center}
.hero h1{font-size:clamp(42px,6vw,68px);line-height:1.02;letter-spacing:-.055em;margin:0 0 20px;font-weight:800}
.hero p{font-size:19px;color:var(--muted);max-width:650px;margin:0 auto;line-height:1.65}
.finder-wrap{max-width:1030px;margin:0 auto;padding:0 24px}
.finder-card{background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);overflow:hidden}
.finder-tabs{display:flex;gap:6px;padding:9px 14px 0;border-bottom:1px solid var(--line)}
.finder-tab{border:0;background:transparent;color:#687487;padding:16px 18px 15px;border-radius:12px 12px 0 0;font-weight:650;font-size:14px;display:flex;gap:9px;align-items:center;position:relative}
.finder-tab:hover{background:#f7faf7;color:var(--ink)}
.finder-tab.active{background:#f1faf5;color:var(--green-dark)}
.finder-tab.active:after{content:"";position:absolute;left:16px;right:16px;bottom:-1px;height:2px;background:var(--green)}
.finder-body{display:grid;grid-template-columns:1.1fr 1fr;gap:34px;padding:31px}
.finder-body label,.advanced-panel label{display:block;font-size:13px;font-weight:750;margin:0 0 10px;color:#344054}
.finder-body label span,.advanced-panel label span{font-weight:500;color:#98a1ad}
.letter-row{display:flex;gap:10px}
.letter-row input{width:60px;height:60px;border:1px solid #dfe5df;border-radius:12px;background:#f8faf8;text-align:center;text-transform:uppercase;font-size:22px;font-weight:800;color:var(--ink);outline:none;transition:.15s}
.letter-row input:focus{background:#fff;border-color:#5acb95;box-shadow:0 0 0 4px rgba(22,156,98,.11)}
.finder-hint{font-size:12px;color:#8a94a3;margin:10px 0 0}
.exclude-input{width:100%;height:60px;border:1px solid #dfe5df;border-radius:12px;background:#fff;padding:0 16px;color:var(--ink);outline:none}
.exclude-input:focus{border-color:#5acb95;box-shadow:0 0 0 4px rgba(22,156,98,.11)}
.finder-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:12px}
.clear-btn{border:1px solid var(--line);background:#fff;color:#687487;border-radius:11px;padding:12px 16px;font-weight:650}
.primary-btn{border:0;background:var(--green);color:white;border-radius:11px;padding:12px 18px;font-weight:750;display:inline-flex;gap:12px;align-items:center;box-shadow:0 7px 18px rgba(22,156,98,.2)}
.primary-btn:hover{background:var(--green-dark);transform:translateY(-1px)}
.advanced-row{border-top:1px solid var(--line);padding:0 31px}
.text-button{border:0;background:none;padding:15px 0;color:#687487;font-weight:650;font-size:13px;display:flex;gap:7px}
.advanced-panel{padding:0 0 22px;display:grid;grid-template-columns:1fr 1fr;gap:10px 18px}
.results-section{max-width:1030px;margin:48px auto 0;padding:0 24px}
.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:18px}
.eyebrow{font-size:11px;letter-spacing:.15em;font-weight:800;color:var(--green-dark);margin:0 0 5px}
.section-heading h2{font-size:28px;letter-spacing:-.035em;margin:0}
.result-count{font-size:13px;color:#7d8795}
.results-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.word-chip{border:1px solid var(--line);background:#fff;border-radius:13px;padding:16px 15px;text-align:left;font-size:16px;font-weight:750;letter-spacing:.08em;display:flex;justify-content:space-between;align-items:center;transition:.16s}
.word-chip:hover{border-color:#b9e4cd;box-shadow:0 8px 24px rgba(20,32,51,.06);transform:translateY(-2px)}
.copy-mark{opacity:.2;font-size:14px;letter-spacing:0}
.word-chip:hover .copy-mark{opacity:.8;color:var(--green)}
.result-note{grid-column:1/-1;color:var(--muted);font-size:13px;margin:10px 0}
.home-sections{max-width:1030px;margin:76px auto 0;padding:0 24px}
.three-col{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px}
.info-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}
.info-card h3{font-size:17px;margin:0 0 8px;letter-spacing:-.02em}
.info-card p{font-size:14px;color:var(--muted);margin:0}
.icon-bubble{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;margin-bottom:16px;font-size:18px}
.green{background:var(--green-soft);color:var(--green-dark)}
.blue{background:var(--blue-soft);color:#3277d8}
.amber{background:var(--amber-soft);color:#b7770b}
.popular{margin-top:58px}
.popular h2,.content-section h2{font-size:28px;letter-spacing:-.035em;margin:0 0 20px}
.link-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.seo-link{background:#fff;border:1px solid var(--line);border-radius:13px;padding:16px 18px;display:flex;justify-content:space-between;align-items:center;color:#526075;font-size:14px;font-weight:650;transition:.15s}
.seo-link:hover{border-color:#b9e4cd;color:var(--green-dark);transform:translateY(-1px)}
.tip{margin-top:34px;background:linear-gradient(90deg,#effaf4,#f7fbf8);border:1px solid #e1f0e7;border-radius:16px;padding:18px 20px;display:flex;gap:14px;align-items:flex-start}
.tip strong{display:block;font-size:13px}.tip p{margin:3px 0 0;color:#6d7888;font-size:13px}
.content-page{max-width:1030px;margin:0 auto;padding:68px 24px}
.page-hero{max-width:780px;margin-bottom:38px}
.breadcrumbs{display:flex;gap:8px;align-items:center;color:#8a94a3;font-size:13px;margin-bottom:18px}
.breadcrumbs a:hover{color:var(--green-dark)}
.page-hero h1{font-size:clamp(38px,5vw,56px);letter-spacing:-.055em;line-height:1.05;margin:0 0 16px}
.page-hero p{font-size:18px;color:var(--muted);max-width:700px}
.pattern-summary{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;margin:26px 0 34px}
.pattern-code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:800;letter-spacing:.16em;font-size:20px}
.word-cloud{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.content-section{margin-top:46px}
.content-section p,.content-section li{color:#687487;font-size:15px}
.content-section ul{padding-left:22px}
.letter-index{display:grid;grid-template-columns:repeat(7,1fr);gap:10px}
.letter-link{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;text-align:center;font-size:20px;font-weight:800}
.letter-link:hover{border-color:#b9e4cd;color:var(--green-dark);background:#fbfffc}
.faq-list{display:grid;gap:10px}
.faq{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 18px}
.faq summary{cursor:pointer;padding:17px 0;font-weight:700}
.faq p{padding:0 0 17px;margin:0}
.site-footer{border-top:1px solid var(--line);margin-top:100px;padding:52px 24px 24px;background:#f8faf8}
.footer-grid{max-width:var(--max);margin:auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.footer-brand{font-size:18px}
.footer-copy{color:#7a8593;font-size:13px;max-width:300px}
.footer-grid h3{font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:#8a94a3;margin:0 0 13px}
.footer-grid>div>a:not(.brand){display:block;color:#687487;font-size:13px;margin:9px 0}
.footer-grid>div>a:hover{color:var(--green-dark)}
.footer-bottom{max-width:var(--max);border-top:1px solid var(--line);margin:40px auto 0;padding-top:18px;display:flex;justify-content:space-between;color:#9aa2ad;font-size:11px}
.toast{position:fixed;bottom:22px;left:50%;transform:translate(-50%,20px);background:#142033;color:#fff;padding:11px 16px;border-radius:10px;font-size:13px;opacity:0;pointer-events:none;transition:.2s;z-index:50}
.toast.show{opacity:1;transform:translate(-50%,0)}
.empty-state{grid-column:1/-1;background:#fff;border:1px dashed #d8ded8;border-radius:16px;padding:30px;text-align:center;color:#718094}
.error{color:var(--danger)!important}
@media(max-width:820px){
  .nav-links{display:none}.mobile-menu{display:block;margin-left:auto}.nav-search{display:none}
  .nav-links.open{display:flex;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:10px 24px 18px;flex-direction:column;align-items:stretch;gap:0;box-shadow:0 15px 35px rgba(20,32,51,.07)}
  .nav-links.open a{padding:13px 0}.nav-links.open a.active:after{display:none}
  .finder-body{grid-template-columns:1fr;gap:24px}.three-col{grid-template-columns:1fr}.results-grid{grid-template-columns:repeat(2,1fr)}
  .letter-index{grid-template-columns:repeat(4,1fr)}.word-cloud{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}
}
@media(max-width:520px){
  .nav-wrap{height:64px;padding:0 17px}.site-header{position:sticky}.hero{padding:66px 18px 34px}.hero h1{font-size:43px}.hero p{font-size:16px}
  .finder-wrap,.results-section,.home-sections,.content-page{padding-left:17px;padding-right:17px}
  .finder-card{border-radius:18px}.finder-tabs{overflow:auto;padding:7px 7px 0}.finder-tab{white-space:nowrap;padding:13px 12px;font-size:12px}
  .finder-body{padding:22px}.letter-row{gap:7px}.letter-row input{width:calc((100vw - 82px)/5);height:54px}
  .finder-actions{justify-content:stretch}.clear-btn,.primary-btn{flex:1;justify-content:center}
  .advanced-row{padding:0 22px}.advanced-panel{grid-template-columns:1fr}
  .results-grid{grid-template-columns:1fr 1fr}.word-chip{padding:14px 12px}
  .link-grid{grid-template-columns:1fr}.letter-index{grid-template-columns:repeat(4,1fr)}.word-cloud{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}
}