:root{--bg:#f6f7fb;--surface:#fff;--surface-2:#eef1f8;--text:#171a21;--muted:#5a6374;--border:#e2e6ef;--accent:#3556e0;--accent-strong:#2843bd;--accent-soft:#e9edfd;--danger:#c2313b;--danger-soft:#fdecee;--radius-lg:18px;--radius-md:12px;--radius-sm:8px;--shadow-sm:0 1px 2px #171a210f;--shadow-md:0 12px 32px -16px #171a2140;--container:1080px;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;margin:0;font-size:16px;line-height:1.65}.site{flex-direction:column;min-height:100vh;display:flex}.site-main{flex:1}.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}.container.narrow{max-width:780px}h1,h2,h3{letter-spacing:-.01em;line-height:1.3}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}.visually-hidden{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;margin:-1px;position:absolute;overflow:hidden}.skip-link{z-index:100;background:var(--accent);color:#fff;border-radius:var(--radius-sm);padding:10px 16px;font-weight:600;position:absolute;top:-48px;left:16px}.skip-link:focus{top:12px}.site-header{z-index:50;-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);background:#ffffffe0;position:sticky;top:0}.header-inner{flex-wrap:wrap;align-items:center;gap:12px 20px;padding-top:12px;padding-bottom:12px;display:flex}.brand{color:var(--text);align-items:center;gap:10px;font-size:1.05rem;font-weight:700;display:inline-flex}.brand:hover{text-decoration:none}.brand-mark{background:var(--accent);color:#fff;border-radius:9px;place-items:center;width:34px;height:34px;font-size:1.05rem;font-weight:800;display:grid}.site-nav{-webkit-overflow-scrolling:touch;align-items:center;gap:4px;margin-right:auto;display:flex;overflow-x:auto}.nav-link{color:var(--muted);white-space:nowrap;border-radius:999px;padding:7px 12px;font-size:.93rem;font-weight:600}.nav-link:hover{color:var(--text);background:var(--surface-2);text-decoration:none}.nav-link.active{color:var(--accent-strong);background:var(--accent-soft)}.lang-switch{border:1px solid var(--border);background:var(--surface);color:var(--muted);border-radius:999px;align-items:center;gap:6px;padding:5px 10px;display:inline-flex}.lang-icon{flex:none}.lang-switch select{font:inherit;color:var(--text);cursor:pointer;background:0 0;border:none;padding:0 2px;font-weight:600}.hero{background:radial-gradient(900px 420px at 85% -10%, var(--accent-soft), transparent 65%), linear-gradient(180deg, #fbfcff 0%, var(--bg) 100%);border-bottom:1px solid var(--border)}.hero-inner{grid-template-columns:minmax(0,3fr) minmax(0,2fr);align-items:center;gap:48px;padding-top:72px;padding-bottom:72px;display:grid}.hero-badge{background:var(--accent-soft);color:var(--accent-strong);border-radius:999px;margin-bottom:18px;padding:5px 14px;font-size:.85rem;font-weight:700;display:inline-block}.hero h1{margin:0 0 16px;font-size:clamp(1.9rem,4.5vw,3rem)}.hero-subtitle{color:var(--muted);max-width:54ch;margin:0 0 28px;font-size:1.1rem}.hero-cta{flex-wrap:wrap;gap:12px;display:flex}.hero-keys{display:none}@media (width>=860px){.hero-keys{flex-direction:column;align-items:center;gap:10px;display:flex;transform:rotate(-2deg)}}.keycaps{gap:8px;display:flex}.keycap{background:var(--surface);border:1px solid var(--border);width:46px;height:46px;box-shadow:0 3px 0 var(--border), var(--shadow-sm);color:var(--muted);border-radius:10px;place-items:center;font-size:1.05rem;font-weight:700;display:grid}.keycap.space{color:#b3bac7;letter-spacing:.14em;text-transform:uppercase;width:158px;font-size:.8rem}.button{font:inherit;cursor:pointer;border:1px solid #0000;border-radius:999px;padding:11px 22px;font-weight:700;transition:transform .12s,box-shadow .12s,background .12s;display:inline-block}.button:hover{text-decoration:none;transform:translateY(-1px)}.button.primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-md)}.button.primary:hover{background:var(--accent-strong)}.button.ghost{background:var(--surface);color:var(--accent-strong);border-color:var(--border)}.button.ghost:hover{border-color:var(--accent)}.section{padding:56px 0}.section.alt{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.section-title{margin:0 0 8px;font-size:1.6rem}.section-subtitle{color:var(--muted);max-width:60ch;margin:0 0 32px}.feature-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;display:grid}.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:22px}.feature-icon{background:var(--accent-soft);border-radius:12px;place-items:center;width:42px;height:42px;margin-bottom:14px;font-size:1.3rem;display:grid}.feature-card h3{margin:0 0 8px;font-size:1.05rem}.feature-card p{color:var(--muted);margin:0;font-size:.95rem}.card-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;display:grid}.action-card{border-radius:var(--radius-lg);border:1px solid var(--border);background:var(--bg);color:var(--text);flex-direction:column;gap:8px;padding:24px;transition:transform .15s,box-shadow .15s;display:flex}.action-card:hover{box-shadow:var(--shadow-md);text-decoration:none;transform:translateY(-3px)}.action-card h3{margin:0;font-size:1.15rem}.action-card p{color:var(--muted);flex:1;margin:0;font-size:.95rem}.action-cta{color:var(--accent-strong);font-size:.95rem;font-weight:700}.lang-chips{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.lang-chip{background:var(--surface);border:1px solid var(--border);color:var(--muted);border-radius:999px;padding:6px 14px;font-size:.92rem;font-weight:600}.page-hero{background:radial-gradient(700px 300px at 90% -20%, var(--accent-soft), transparent 60%), var(--surface);border-bottom:1px solid var(--border)}.page-hero .container{padding-top:44px;padding-bottom:44px}.page-hero h1{margin:0 0 10px;font-size:clamp(1.6rem,3.6vw,2.2rem)}.page-hero p{color:var(--muted);max-width:62ch;margin:0;font-size:1.05rem}.article{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:20px;padding:28px;scroll-margin-top:90px}.article h2{margin:0 0 14px;font-size:1.25rem}.article p{margin:0 0 12px}.article p:last-child{margin-bottom:0}.steps{margin:8px 0 12px;padding-left:22px}.steps li{margin-bottom:10px}.steps li::marker{color:var(--accent);font-weight:700}.article-note{border-left:3px solid var(--accent);background:var(--accent-soft);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text);font-size:.95rem;padding:10px 16px!important}.toc{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:24px;padding:20px 24px}.toc-title{margin:0 0 10px;font-weight:700}.toc ol{columns:2;column-gap:40px;margin:0;padding-left:20px}.toc li{break-inside:avoid;margin-bottom:6px}@media (width<=640px){.toc ol{columns:1}}.accordion{flex-direction:column;gap:12px;margin-bottom:28px;display:flex}.accordion-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden}.accordion-heading{margin:0}.accordion-trigger{width:100%;font:inherit;text-align:left;cursor:pointer;color:var(--text);background:0 0;border:none;justify-content:space-between;align-items:center;gap:16px;padding:16px 20px;font-weight:700;display:flex}.accordion-icon{background:var(--accent-soft);width:26px;height:26px;color:var(--accent-strong);border-radius:50%;flex:none;place-items:center;font-size:1.05rem;font-weight:700;display:grid}.accordion-panel{grid-template-rows:0fr;transition:grid-template-rows .25s;display:grid}.accordion-item.open .accordion-panel{grid-template-rows:1fr}.accordion-content{overflow:hidden}.accordion-content>p{color:var(--muted);margin:0;padding:0 20px 16px}.accordion-content>p+p{padding-top:0}.ask-card{background:linear-gradient(135deg, var(--accent-soft), #f6f9ff);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px}.ask-card h2{margin:0 0 8px;font-size:1.2rem}.ask-card p{color:var(--muted);margin:0 0 18px}.support-grid{grid-template-columns:minmax(0,2fr) minmax(0,3fr);align-items:start;gap:24px;display:grid}@media (width<=880px){.support-grid{grid-template-columns:1fr}}.support-aside{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;position:sticky;top:84px}@media (width<=880px){.support-aside{position:static}}.support-aside h2{margin:0 0 14px;font-size:1.1rem}.tips-list{color:var(--muted);margin:0;padding-left:20px;font-size:.95rem}.tips-list li{margin-bottom:10px}.tips-list li::marker{color:var(--accent);font-weight:700}.response-note{border-top:1px solid var(--border);margin:18px 0 0;padding-top:16px;font-size:.95rem;font-weight:600}.response-note.subtle{color:var(--muted);font-weight:400}.support-form-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:28px}.support-form-card h2{margin:0 0 20px;font-size:1.25rem}.form-row{grid-template-columns:1fr 1fr;gap:0 18px;display:grid}@media (width<=640px){.form-row{grid-template-columns:1fr}}.field{flex-direction:column;margin-bottom:18px;display:flex}.field label{margin-bottom:6px;font-size:.93rem;font-weight:700}.req{color:var(--danger)}.optional{color:var(--muted);font-weight:500}.field input,.field select,.field textarea{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);width:100%;font:inherit;color:var(--text);padding:10px 14px;transition:border-color .12s,box-shadow .12s}.field textarea{resize:vertical;min-height:120px}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.field select:disabled{background:var(--surface-2);color:var(--muted);cursor:not-allowed}.field input[aria-invalid=true],.field select[aria-invalid=true],.field textarea[aria-invalid=true]{border-color:var(--danger);box-shadow:0 0 0 3px var(--danger-soft)}.field-hint{color:var(--muted);margin:6px 0 0;font-size:.85rem}.field-error{color:var(--danger);margin:6px 0 0;font-size:.87rem;font-weight:600}.form-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.form-note{color:var(--muted);margin:14px 0 0;font-size:.88rem}.button:disabled{opacity:.6;cursor:not-allowed;transform:none}.honeypot{opacity:0;width:1px;height:1px;position:absolute;left:-9999px}.form-banner{border:1px solid var(--danger);background:var(--danger-soft);color:var(--danger);border-radius:var(--radius-md);margin-bottom:18px;padding:12px 16px}.form-banner strong{margin-bottom:2px;display:block}.form-banner p{color:inherit;margin:0;font-size:.92rem}.form-banner .error-detail{opacity:.85;margin-top:6px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.78rem}.form-success{text-align:center;padding:32px 8px}.form-success-icon{background:var(--accent-soft);width:52px;height:52px;color:var(--accent-strong);border-radius:50%;place-items:center;margin:0 auto 14px;font-size:1.6rem;font-weight:800;display:grid}.form-success h3{margin:0 0 8px;font-size:1.2rem}.form-success p{color:var(--muted);margin:0 0 20px}.privacy-meta{color:var(--muted);margin:0 0 20px;font-size:.95rem}.notfound{text-align:center;padding-top:40px;padding-bottom:40px}.notfound h1{margin:0 0 10px;font-size:1.8rem}.notfound p{color:var(--muted);margin:0 0 24px}.site-footer{background:var(--surface);border-top:1px solid var(--border);margin-top:24px}.footer-grid{grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:32px;padding-top:40px;padding-bottom:32px;display:grid}@media (width<=720px){.footer-grid{grid-template-columns:1fr}}.footer-title{align-items:center;gap:10px;margin-bottom:12px;font-weight:700;display:flex}.footer-brand p{color:var(--muted);margin:0 0 10px;font-size:.95rem}.footer-note{font-size:.87rem}.footer-nav{flex-direction:column;align-items:flex-start;gap:10px;display:flex}@media (width<=720px){.footer-nav{flex-flow:wrap;gap:10px 22px}}.footer-nav a{color:var(--muted);font-size:.95rem;font-weight:600}.footer-nav a:hover{color:var(--accent-strong)}.footer-bottom{border-top:1px solid var(--border);padding-top:16px;padding-bottom:16px}.footer-bottom p{color:var(--muted);margin:0;font-size:.85rem}