.study-tools-page{max-width:1460px;margin:0 auto;padding:18px 20px 42px;color:var(--ink)}
.tools-breadcrumb{display:flex;gap:8px;align-items:center;margin:6px 0 16px;color:var(--muted);font-size:14px;overflow-wrap:anywhere}
.tools-heading{display:grid;grid-template-columns:minmax(0,1fr) 130px;gap:24px;align-items:center;padding:24px 0;border-bottom:1px solid var(--line)}
.tools-heading h1{margin:10px 0 8px;font-size:clamp(30px,4vw,48px)}
.tools-heading p{max-width:760px;margin:0;color:var(--muted);font-size:17px;line-height:1.65}
.tools-heading-mark{display:grid;place-items:center;width:112px;aspect-ratio:1;margin-left:auto;border:1px solid #8bd9d2;border-radius:8px;background:#eafaf7;color:#087b69;font-size:46px}
.tools-heading.is-compact h1{font-size:clamp(28px,3vw,40px)}
.tools-search{display:flex;align-items:center;gap:10px;max-width:760px;margin:24px 0 12px;padding:0 14px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
.tools-search input{width:100%;min-width:0;padding:14px 0;border:0;outline:0;background:transparent;color:var(--ink);font:inherit}
.tools-filter{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.tools-filter button{min-height:42px;padding:9px 14px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink);font:inherit;font-weight:700;cursor:pointer}
.tools-filter button[aria-pressed=true]{border-color:var(--primary);background:var(--primary);color:#fff}
.tools-directory{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:12px}
.tool-directory-item{display:grid;grid-template-columns:52px minmax(0,1fr) 20px;gap:12px;align-items:center;min-height:104px;padding:15px;border:1px solid var(--line);border-left:4px solid var(--primary);border-radius:8px;background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}
.tool-directory-item[hidden]{display:none}
.tool-directory-item:hover,.tool-directory-item:focus-visible{border-color:var(--primary);transform:translateY(-1px)}
.tool-directory-item strong,.tool-directory-item small{display:block}.tool-directory-item small{margin-top:5px;color:var(--muted);line-height:1.45}
.tool-directory-icon{display:grid;place-items:center;width:50px;aspect-ratio:1;border-radius:8px;background:#eaf2ff;color:var(--primary);font-size:21px}
.tools-empty{padding:24px;text-align:center}
.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,340px);gap:20px;margin-top:20px;align-items:start}
.tool-workspace,.tool-related,.tool-help{border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow)}
.tool-workspace{min-width:0;padding:20px}.tool-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
.tool-field{display:grid;gap:7px;min-width:0;font-weight:700}.tool-field.full{grid-column:1/-1}
.tool-field input,.tool-field select,.tool-field textarea{width:100%;min-width:0;min-height:46px;padding:10px 12px;border:1px solid #bdcfdf;border-radius:7px;background:var(--surface);color:var(--ink);font:inherit;font-weight:500}
.tool-field textarea{min-height:128px;resize:vertical}.tool-field small{color:var(--muted);font-weight:500;line-height:1.45}
.tool-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.tool-actions .btn{gap:8px;border:0;cursor:pointer}
.tool-message{min-height:24px;margin:12px 0 0;color:#a3343d;font-weight:700}
.tool-result{margin-top:14px;padding:18px;border:1px solid #8bd9d2;border-left:5px solid #0b8b72;border-radius:8px;background:#effaf7;overflow:auto}
.tool-result h2,.tool-result h3{margin-top:0}.tool-result-value{font-size:clamp(28px,4vw,42px);font-weight:800;color:#087b69}
.tool-result table{width:100%;border-collapse:collapse;min-width:520px}.tool-result th,.tool-result td{padding:10px;border:1px solid #bdcfdf;text-align:left}
.tool-result ol,.tool-result ul{line-height:1.8}.tool-related{padding:18px}.tool-related h2{margin-top:0;font-size:20px}
.tool-related a{display:flex;align-items:center;gap:10px;padding:11px 4px;border-bottom:1px solid var(--line);color:var(--ink)}.tool-related a i{width:25px;color:var(--primary)}
.tool-help{margin-top:20px;padding:20px;line-height:1.7}.tool-help h2{font-size:20px;margin:16px 0 6px}.tool-help h2:first-child{margin-top:0}
.print-document{background:#fff;color:#111;padding:20px}.print-document header{text-align:center;border-bottom:2px solid #111}.print-document .write-lines{height:80px;background:repeating-linear-gradient(to bottom,transparent 0,transparent 25px,#bbb 26px)}
.answer-bubbles{display:flex;gap:12px}.answer-bubbles span{display:inline-grid;place-items:center;width:27px;height:27px;border:1px solid #111;border-radius:50%}
@media(max-width:800px){.study-tools-page{padding:12px}.tools-heading{grid-template-columns:minmax(0,1fr) 74px}.tools-heading-mark{width:70px;font-size:28px}.tool-layout{grid-template-columns:1fr}.tool-related{order:2}}
@media(max-width:560px){.tools-heading{grid-template-columns:1fr}.tools-heading-mark{display:none}.tools-directory,.tool-form{grid-template-columns:1fr}.tool-field.full{grid-column:auto}.tools-filter{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}}
@media print{body>*:not(.site-shell),header,footer,.tools-breadcrumb,.tools-heading,.tool-related,.tool-help,.tool-form,.tool-actions,.tool-message,.floating-actions{display:none!important}.site-shell,.study-tools-page,.tool-layout,.tool-workspace,.tool-result{display:block!important;max-width:none!important;margin:0!important;padding:0!important;border:0!important;box-shadow:none!important}.tool-result{background:#fff!important;color:#111!important}}