:root{--background:#f7f8fb;--surface:#ffffff;--surface-soft:#f1f5f9;--text:#111827;--muted:#667085;--line:#d8dee8;--primary:#2563eb;--primary-strong:#1d4ed8;--primary-soft:#eaf1ff;--success:#047857;--warning:#b45309;--danger:#b42318;--shadow:0 18px 45px rgba(15,23,42,0.08)}*{box-sizing:border-box}html{min-width:320px}body{margin:0;background:var(--background);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans KR,sans-serif;line-height:1.55}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}.site-shell{min-height:100vh;display:flex;flex-direction:column}.container{width:min(1120px,calc(100% - 32px));margin:0 auto}.main{flex:1 1}.header{position:-webkit-sticky;position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(216,222,232,.88);background:rgba(247,248,251,.9);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:0}.brand-mark{width:34px;height:34px;border-radius:8px;display:grid;place-items:center;background:var(--primary);color:#fff;font-size:13px}.nav{display:flex;gap:18px;font-size:14px;font-weight:650}.language-select,.nav{align-items:center;color:var(--muted)}.language-select{display:inline-flex;gap:8px;font-size:.92rem;white-space:nowrap}.language-select select{min-width:104px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);padding:7px 28px 7px 10px;font:inherit}.nav a:hover{color:var(--primary)}.footer{border-top:1px solid var(--line);background:#fff;padding:28px 0;color:var(--muted);font-size:14px}.footer-inner{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}.footer-links{display:flex;gap:16px;flex-wrap:wrap}.section{padding:64px 0}.section.compact{padding:40px 0}.hero{padding:72px 0 48px}.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);grid-gap:40px;gap:40px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;color:var(--primary-strong);font-weight:760;font-size:14px}.hero h1,.page-title h1{margin:0;color:var(--text);font-size:clamp(38px,6vw,64px);line-height:1.03;letter-spacing:0}.hero p,.page-title p{margin:18px 0 0;max-width:680px;color:var(--muted);font-size:18px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:8px;padding:10px 16px;background:var(--primary);color:#fff;font-weight:750;transition:background .15s ease,border-color .15s ease,color .15s ease,transform .15s ease}.button:hover{background:var(--primary-strong)}.button.secondary{background:#fff;color:var(--text);border-color:var(--line)}.button.secondary:hover{border-color:#a8b3c5;background:#f9fafb}.button.ghost{background:transparent;color:var(--primary)}.button:disabled{cursor:not-allowed;opacity:.55}.panel{border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow)}.hero-panel{padding:24px}.security-list{display:grid;grid-gap:12px;gap:12px;margin:0;padding:0;list-style:none}.security-list li{display:flex;align-items:flex-start;gap:12px;padding:12px;border-radius:8px;background:var(--surface-soft);color:var(--muted)}.check{width:22px;height:22px;flex:0 0 22px;border-radius:999px;background:#dcfce7;color:var(--success);display:grid;place-items:center;font-size:13px;font-weight:900}.section-heading{display:flex;justify-content:space-between;gap:24px;align-items:flex-end;margin-bottom:20px}.content-page h1,.section-heading h2,.tool-layout h2{margin:0;font-size:28px;line-height:1.18;letter-spacing:0}.content-page li,.content-page p,.section-heading p,.tool-layout .muted{color:var(--muted)}.tool-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:16px;gap:16px}.tool-card{min-height:210px;display:flex;flex-direction:column;justify-content:space-between;border:1px solid var(--line);border-radius:8px;padding:18px;transition:border-color .15s ease,transform .15s ease,box-shadow .15s ease}.tool-card:hover{border-color:#9bb5f5;box-shadow:0 12px 30px rgba(37,99,235,.1);transform:translateY(-2px)}.tool-card h3{margin:12px 0 8px;font-size:19px}.tool-card p{margin:0;color:var(--muted);font-size:14px}.tags{display:flex;gap:6px;flex-wrap:wrap}.tag{background:var(--primary-soft);color:var(--primary-strong);font-weight:750}.category-label,.tag{border-radius:999px;padding:4px 8px;font-size:12px}.category-label{display:inline-flex;width:-moz-fit-content;width:fit-content;margin-bottom:10px;background:#eef2ff;color:#3730a3;font-weight:800}.category-overview{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:16px;gap:16px}.category-card{min-height:160px;display:grid;grid-gap:8px;gap:8px;border:1px solid var(--line);border-radius:8px;transition:border-color .15s ease,transform .15s ease,box-shadow .15s ease}.category-card:hover{border-color:#9bb5f5;box-shadow:0 12px 30px rgba(37,99,235,.1);transform:translateY(-2px)}.category-card span{color:var(--muted);font-size:14px}.category-card small{align-self:end;color:var(--primary-strong);font-weight:800}.tool-category-section{scroll-margin-top:92px;padding:24px 0 36px;border-top:1px solid var(--line)}.status{color:var(--success);font-size:13px;font-weight:800}.status.planned{color:var(--warning)}.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:16px;gap:16px;counter-reset:steps}.two-column{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.72fr);grid-gap:32px;gap:32px;align-items:start}.content-grid h2,.content-page h2,.two-column h2{margin:0 0 12px;font-size:24px;line-height:1.22}.two-column p{color:var(--muted)}.feature-list{display:grid;grid-gap:12px;gap:12px}.content-grid article,.feature-list div{border:1px solid var(--line);border-radius:8px;background:#fff;padding:18px}.feature-list strong{display:block;margin-bottom:6px}.feature-list span{color:var(--muted);font-size:14px}.content-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:16px;gap:16px}.content-grid p{margin:0;color:var(--muted)}.step{border-top:1px solid var(--line);padding-top:16px}.step:before{counter-increment:steps;content:counter(steps);width:30px;height:30px;border-radius:8px;display:grid;place-items:center;margin-bottom:12px;background:var(--text);color:#fff;font-weight:800}.tool-layout{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(300px,.92fr);grid-gap:20px;gap:20px;align-items:start;padding:36px 0 64px}.tool-main,.tool-side{display:grid;grid-gap:16px;gap:16px}.tool-header{padding:48px 0 20px}.page-title{padding:48px 0 16px}.tool-panel{border:1px solid var(--line);border-radius:8px;background:#fff;padding:20px}.dropzone{position:relative;min-height:230px;border:1.5px dashed #b8c3d6;border-radius:8px;display:grid;place-items:center;padding:24px;background:#fbfcff;text-align:center;transition:border-color .15s ease,background .15s ease}.dropzone.active{border-color:var(--primary);background:var(--primary-soft)}.dropzone input{position:absolute;inset:0;opacity:0;cursor:pointer}.dropzone strong{display:block;margin-bottom:8px;font-size:18px}.dropzone span,.field-hint,.hint,.meta-row{color:var(--muted);font-size:14px}.dual-dropzones{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px;gap:12px}.privacy-notice{border:1px solid #bfdbfe;border-radius:8px;background:#eff6ff;padding:14px 16px;color:#1e3a8a;font-size:14px;font-weight:650}.form-grid{display:grid;grid-gap:16px;gap:16px}.field{display:grid;grid-gap:8px;gap:8px}.field label,.legend{color:#344054;font-weight:750;font-size:14px}.field input,.field select{width:100%;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);padding:10px 12px}.field input[type=range]{padding:0}.segmented{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:8px;gap:8px}.segment{min-height:42px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--muted);font-weight:750}.segment.active{border-color:var(--primary);background:var(--primary-soft);color:var(--primary-strong)}.inline-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:10px;gap:10px}.preview-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px}.preview-box{min-height:250px;grid-template-rows:auto 1fr auto;grid-gap:12px;gap:12px;border:1px solid var(--line);background:#fff;padding:14px}.preview-box,.preview-stage{display:grid;border-radius:8px}.preview-stage{min-height:180px;place-items:center;background:linear-gradient(45deg,#e5e7eb 25%,transparent 0),linear-gradient(-45deg,#e5e7eb 25%,transparent 0),linear-gradient(45deg,transparent 75%,#e5e7eb 0),linear-gradient(-45deg,transparent 75%,#e5e7eb 0);background-color:#f8fafc;background-position:0 0,0 10px,10px -10px,-10px 0;background-size:20px 20px;overflow:hidden}.preview-stage img,.video-preview{max-height:360px;object-fit:contain}.video-preview{width:100%}.meta-row{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}.error{border:1px solid #fecaca;border-radius:8px;background:#fef2f2;color:var(--danger);padding:12px 14px;font-size:14px;font-weight:650}.frame-list{display:grid;grid-gap:10px;gap:10px}.frame-item{display:grid;grid-template-columns:64px minmax(0,1fr) auto;grid-gap:12px;gap:12px;align-items:center;border:1px solid var(--line);border-radius:8px;background:#fff;padding:10px}.frame-item img{width:64px;height:64px;border-radius:8px;object-fit:cover;background:var(--surface-soft)}.frame-item strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.frame-actions{display:flex;align-items:center;gap:6px}.icon-button{width:34px;height:34px;border:1px solid var(--line);border-radius:8px;display:grid;place-items:center;background:#fff;color:var(--text);font-weight:850}.icon-button:hover{border-color:#a8b3c5;background:#f9fafb}.icon-button:disabled{cursor:not-allowed;opacity:.4}.icon-button.danger{color:var(--danger)}.empty-state{min-height:110px;display:grid;place-items:center;border:1px dashed #c7cfdd;border-radius:8px;background:#f8fafc;color:var(--muted)}.progress-track{height:10px;overflow:hidden;border-radius:999px;background:#e5e7eb}.progress-track span{display:block;height:100%;border-radius:inherit;background:var(--primary);transition:width .12s ease}.result-stats{display:grid;grid-gap:6px;gap:6px;border:1px solid var(--line);border-radius:8px;background:#f8fafc;padding:12px;color:var(--muted);font-size:14px}.result-list{display:grid;grid-gap:10px;gap:10px}.result-item{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:12px}.result-item strong{display:block;overflow-wrap:anywhere}.result-item span{color:var(--muted);font-size:14px}.compact-button{min-height:36px;padding:7px 12px;font-size:14px}.checkbox-row{display:inline-flex;align-items:center;gap:8px;color:#344054;font-weight:700}.checkbox-row input{width:auto}.preset-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:8px;gap:8px}.canvas-frame{width:100%;display:grid;place-items:center;overflow:auto;border:1px solid var(--line);border-radius:8px;background:#0b1020;padding:14px}.tool-canvas{width:100%;max-height:620px;object-fit:contain;border-radius:6px;background:#111827}.palette-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:10px;gap:10px}.swatch{min-height:58px;display:flex;align-items:flex-end;justify-content:flex-start;border:1px solid rgba(15,23,42,.15);border-radius:8px;padding:8px}.swatch span{border-radius:6px;background:rgba(255,255,255,.88);color:#111827;padding:3px 6px;font-size:12px;font-weight:800}.ad-placeholder{min-height:92px;display:grid;place-items:center;border:1px dashed #c7cfdd;border-radius:8px;background:#f8fafc;color:var(--muted);font-size:13px}.faq-list{display:grid;grid-gap:10px;gap:10px}.faq-item{border:1px solid var(--line);border-radius:8px;background:#fff;padding:16px}.faq-item strong{display:block;margin-bottom:6px}.content-page{max-width:780px;padding:52px 0 72px}.placeholder-copy{padding:24px}@media (max-width:900px){.hero-grid,.preview-grid,.tool-layout,.two-column{grid-template-columns:1fr}.category-overview,.content-grid,.steps,.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:640px){.container{width:min(100% - 24px,1120px)}.header-inner{height:auto;min-height:64px;align-items:flex-start;flex-direction:column;padding:14px 0;gap:12px}.nav{width:100%;overflow-x:auto;padding-bottom:2px}.hero{padding-top:48px}.hero h1,.page-title h1{font-size:38px}.category-overview,.content-grid,.dual-dropzones,.frame-item,.inline-fields,.preset-grid,.segmented,.steps,.tool-grid{grid-template-columns:1fr}.frame-actions{justify-content:flex-end}.section-heading{align-items:flex-start;flex-direction:column}}.tool-textarea{width:100%;min-height:190px;resize:vertical;background:#fff;color:var(--text);padding:12px;font:inherit}.code-output,.tool-textarea{border:1px solid var(--line);border-radius:8px;line-height:1.55}.code-output{min-height:150px;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;background:#0f172a;color:#e5e7eb;padding:14px;font-size:13px}.rendered-output{min-height:150px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:16px;color:var(--text)}.rendered-output blockquote{margin:10px 0;border-left:3px solid var(--primary);padding-left:12px;color:var(--muted)}.rendered-output code{border-radius:6px;background:var(--surface-soft);padding:2px 5px}.compact-heading{margin-bottom:12px}.stat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.color-preview{min-height:74px}@media (max-width:640px){.stat-grid{grid-template-columns:1fr}}.qr-preview{display:grid;place-items:center;min-height:280px;background:#f8fafc;padding:18px}.qr-preview,.qr-preview img{border:1px solid var(--line);border-radius:8px}.qr-preview img{width:min(100%,360px);height:auto;background:#fff;padding:12px}.disabled-link{pointer-events:none;opacity:.5}body{background:#f5f7fb}.header{background:rgba(255,255,255,.92);border-bottom-color:rgba(203,213,225,.8)}.brand-mark{box-shadow:0 8px 18px rgba(37,99,235,.24)}.nav a{border-radius:999px;padding:7px 10px;transition:background .15s ease,color .15s ease}.nav a:hover{background:#eef2ff}.page-title-panel{margin-top:28px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:28px;box-shadow:0 12px 36px rgba(15,23,42,.06)}.category-card,.tool-card,.tool-category-section,[data-category=image]{--cat:#2563eb;--cat-soft:#eaf1ff;--cat-ink:#1d4ed8}[data-category=gif-video]{--cat:#db2777;--cat-soft:#fce7f3;--cat-ink:#be185d}[data-category=pdf]{--cat:#dc2626;--cat-soft:#fee2e2;--cat-ink:#b91c1c}[data-category=social-media]{--cat:#7c3aed;--cat-soft:#ede9fe;--cat-ink:#6d28d9}[data-category=text]{--cat:#0891b2;--cat-soft:#cffafe;--cat-ink:#0e7490}[data-category=developer]{--cat:#0f766e;--cat-soft:#ccfbf1;--cat-ink:#0f766e}[data-category=seo]{--cat:#65a30d;--cat-soft:#ecfccb;--cat-ink:#4d7c0f}[data-category=security]{--cat:#ea580c;--cat-soft:#ffedd5;--cat-ink:#c2410c}[data-category=calculators]{--cat:#9333ea;--cat-soft:#f3e8ff;--cat-ink:#7e22ce}[data-category=unit-converters]{--cat:#0284c7;--cat-soft:#e0f2fe;--cat-ink:#0369a1}[data-category=utilities]{--cat:#475569;--cat-soft:#e2e8f0;--cat-ink:#334155}.category-overview{gap:18px}.category-card{position:relative;min-height:188px;align-content:start;overflow:hidden;border-color:#dbe2ee;background:#fff;padding:18px;box-shadow:0 10px 28px rgba(15,23,42,.05)}.category-card:before{content:"";position:absolute;inset:0 auto 0 0;width:4px;background:var(--cat)}.category-card strong{margin-top:2px;color:#0f172a;font-size:18px;line-height:1.25}.category-card small,.category-count{width:-moz-fit-content;width:fit-content;border-radius:999px;background:var(--cat-soft);color:var(--cat-ink);padding:5px 9px;font-size:12px;font-weight:850}.category-card:hover{border-color:var(--cat);box-shadow:0 16px 38px rgba(15,23,42,.1)}.tool-grid{gap:18px}.tool-card{min-height:196px;border-color:#dbe2ee;border-top:3px solid var(--cat);background:#fff;padding:16px;box-shadow:0 8px 22px rgba(15,23,42,.045)}.tool-card:hover{border-color:#dbe2ee;border-top-color:var(--cat);box-shadow:0 14px 30px rgba(15,23,42,.09)}.tool-card-footer,.tool-topline{display:flex;align-items:center;justify-content:space-between;gap:10px}.tool-topline{margin-bottom:12px}.category-label{margin-bottom:0;background:var(--cat-soft);color:var(--cat-ink)}.status{position:relative;display:inline-flex;align-items:center;gap:6px;color:#047857;white-space:nowrap}.status:before{content:"";width:7px;height:7px;border-radius:999px;background:currentColor}.tool-card h3{margin:0 0 8px;color:#0f172a;font-size:18px;line-height:1.28}.tool-card p{min-height:66px;line-height:1.5}.tool-card-footer{margin-top:18px;padding-top:14px;border-top:1px solid #edf1f7}.tag{background:#f1f5f9;color:#475569}.muted-tag{color:var(--muted)}.tool-action{display:inline-flex;align-items:center;gap:6px;color:var(--cat-ink);font-size:13px;font-weight:850;white-space:nowrap}.tool-category-list{display:grid;grid-gap:28px;gap:28px}.tool-category-section{border:1px solid #dbe2ee;border-radius:8px;background:#fff;padding:24px;box-shadow:0 10px 28px rgba(15,23,42,.045)}.tool-category-section .eyebrow{color:var(--cat-ink)}.category-heading{border-bottom:1px solid #edf1f7;padding-bottom:18px}.hero-panel{border-top:3px solid var(--primary)}@media (max-width:640px){.page-title-panel,.tool-category-section{padding:18px}.tool-card p{min-height:auto}}.category-card small:before,.category-count:before{content:"";width:6px;height:6px;border-radius:999px;background:currentColor}.category-card small,.category-count{display:inline-flex;align-items:center;gap:7px}