[hidden]{display:none!important}
:root{--bg:#f9fafb;--panel:#fff;--ink:#171e29;--sub:#526071;--border:#dfe5ea;--accent:#155eef;--accent2:#1049bf;--good:#11624d;--bad:#b42318;--shadow:0 10px 30px rgba(15,23,42,.045);color-scheme:light}
:root[data-theme="dark"]{--bg:#10151c;--panel:#19232e;--ink:#edf4fa;--sub:#b6c3d1;--border:#394757;--accent:#84b1ff;--accent2:#a3c9ff;--good:#72dfb7;--bad:#ff9089;--shadow:none;color-scheme:dark}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;line-height:1.55}a{color:var(--accent)}a:hover{text-decoration:underline}button,input,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:3px}h1,h2,h3{line-height:1.2;letter-spacing:-.035em}h1{font-size:clamp(2rem,4vw,3.15rem);margin:.1em 0 .35em}h2{font-size:clamp(1.35rem,2.5vw,1.75rem)}p{margin:.45rem 0 1rem}.muted{color:var(--sub)}.site-width{max-width:1130px;margin:auto;padding:0 22px}.skip{position:absolute;top:-80px;left:10px;background:var(--panel);padding:12px;z-index:100}.skip:focus{top:10px}.header{background:var(--panel);border-bottom:1px solid var(--border)}.header-in{min-height:72px;display:flex;align-items:center;gap:25px;flex-wrap:wrap}.brand{display:inline-flex;align-items:center;gap:9px;font-weight:750;font-size:1.15rem;color:var(--ink);text-decoration:none;letter-spacing:-.025em}.brand-icon{width:36px;height:36px;border:1.5px solid var(--accent);color:var(--accent);border-radius:10px;display:grid;place-items:center;font-size:13px;font-weight:800}.nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-left:auto}.nav a{color:var(--sub);text-decoration:none;font-size:.94rem}.nav a:hover{color:var(--ink)}.theme-btn{background:var(--panel);border:1px solid var(--border);color:var(--ink);padding:6px 12px;border-radius:9px}.hero{padding:64px 0 38px;max-width:730px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-weight:800;color:var(--accent);font-size:.73rem}.hero-lead{font-size:1.12rem;max-width:640px;color:var(--sub)}.search{background:var(--panel);border:1px solid var(--border);padding:16px;border-radius:13px;width:100%;box-shadow:var(--shadow)}.section-head{margin:37px 0 14px;display:flex;align-items:center;justify-content:space-between;gap:12px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.card{display:block;background:var(--panel);border:1px solid var(--border);border-radius:15px;padding:22px;color:var(--ink);text-decoration:none;transition:border-color .15s,transform .15s}.card:hover{border-color:var(--accent);transform:translateY(-2px);text-decoration:none}.card h3{font-size:1.07rem;margin:6px 0 5px}.card p{color:var(--sub);font-size:.89rem;margin:0}.tag{display:inline-block;border:1px solid var(--border);background:var(--bg);color:var(--sub);padding:3px 9px;border-radius:30px;font-size:.76rem}.tool-layout{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(280px,.9fr);gap:20px;align-items:start}.tool-panel,.side-panel,.article{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:24px}.tool-panel{min-height:380px}.tool-head{padding:38px 0 24px;max-width:770px}.crumb{font-size:.85rem;color:var(--sub)}.drop{border:2px dashed var(--border);border-radius:14px;text-align:center;padding:34px 20px;transition:border .15s,background .15s;background:var(--bg)}.drop.drag{border-color:var(--accent)}.drop strong{display:block;font-size:1.14rem;margin-bottom:6px}.file-input{max-width:100%;width:100%;margin-top:16px}.field{margin:18px 0}.field label{display:block;font-size:.93rem;font-weight:700;margin-bottom:7px}.field input,.field select{width:100%;padding:11px 12px;background:var(--panel);color:var(--ink);border:1px solid var(--border);border-radius:10px}.btn{background:var(--accent);color:#fff;border:1px solid transparent;border-radius:10px;padding:12px 20px;font-weight:750;display:inline-flex;gap:9px;align-items:center;justify-content:center;text-decoration:none}.btn:hover{background:var(--accent2);color:#fff;text-decoration:none}.btn.secondary{background:var(--panel);color:var(--ink);border-color:var(--border)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:16px 0}.notice{padding:12px 14px;border-radius:10px;border:1px solid var(--border);color:var(--sub);background:var(--bg);font-size:.9rem}.status{min-height:26px;margin:12px 0;font-weight:650;white-space:pre-line}.status.error{color:var(--bad)}.status.ok{color:var(--good)}.preview{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:12px;min-height:150px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px}.preview canvas{width:auto;max-width:100%;max-height:345px;height:auto;background:white;box-shadow:var(--shadow)}.file-list{font-size:.9rem;list-style:none;padding:0}.file-list li{margin:7px 0;overflow-wrap:anywhere}.file-list li:before{content:'• ';color:var(--accent)}.downloads{display:flex;flex-direction:column;gap:10px}.downloads a{font-weight:700}.article{margin:32px 0}.article h2{margin-top:26px}.article ul{padding-left:21px}.article li{margin:.35rem 0}.article details{padding:13px 0;border-bottom:1px solid var(--border)}.article summary{cursor:pointer;font-weight:700}.footer{margin-top:70px;border-top:1px solid var(--border);background:var(--panel);padding:38px 0;color:var(--sub);font-size:.88rem}.footer a{color:var(--sub);margin-right:13px}.footer p{margin:13px 0}.related{display:flex;gap:10px;flex-wrap:wrap}.related a{border:1px solid var(--border);padding:6px 12px;border-radius:20px;text-decoration:none}.hidden{display:none!important}main{min-height:56vh}@media(max-width:900px){.tool-layout{grid-template-columns:1fr}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.nav{gap:11px}}@media(max-width:580px){.site-width{padding:0 16px}.header-in{padding-top:12px;padding-bottom:12px;gap:10px}.nav{width:100%;margin-left:0}.nav a{font-size:.84rem}.hero{padding-top:35px}.cards{grid-template-columns:1fr}.tool-panel,.side-panel,.article{padding:17px}.tool-head{padding-top:23px}}

/* Phase 3: minimal option grid while keeping existing site design */
#options{display:grid;gap:9px;margin-top:12px}#options label{display:block;font-size:.92rem;font-weight:650;color:var(--sub)}#options input,#options textarea{display:block;width:100%;background:var(--panel);color:var(--ink);border:1px solid var(--border);border-radius:9px;padding:9px;margin-top:4px}#options .notice{line-height:1.4;margin:5px 0}