:root{--primary:#1e3a8a;--primary-light:#2563eb;--primary-dark:#102343;--text-main:#0f172a;--text-sub:#334155;--text-muted:#526176;--bg-main:#f8fafc;--bg-card:#fff;--primary-bg:#eff6ff;--accent-light:#f59e0b;--border-color:#e2e8f0;--control-border:#64748b;--warning-bg:#fffbeb;--warning-text:#92400e;--error-bg:#fef2f2;--error-text:#991b1b;--success-bg:#ecfdf5;--success-text:#065f46;--radius-sm:8px;--radius-md:12px;--radius-lg:18px;--shadow:0 2px 6px rgba(15,23,42,.06)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:120px}body{margin:0;background:var(--bg-main);color:var(--text-main);font:16px/1.8 -apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Malgun Gothic',sans-serif;word-break:keep-all;overflow-wrap:anywhere}a{color:var(--primary);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.6}:focus-visible{outline:3px solid var(--primary-light);outline-offset:4px}a,button,input,select,textarea{min-width:0}h1,h2,h3,p{margin-top:0}h1{font-size:38px;font-weight:800;line-height:1.4;letter-spacing:-1.5px;margin-bottom:20px}h2{font-size:25px;line-height:1.5;letter-spacing:-.6px;margin-bottom:16px}h3{font-size:20px;line-height:1.5;margin-bottom:12px}p{margin-bottom:18px;color:var(--text-sub)}li{margin-bottom:8px}strong{color:var(--text-main)}svg{flex-shrink:0}img{max-width:100%;height:auto}.container{max-width:840px;margin:auto;padding:0 20px}.section{margin:40px 0}.skip-link{position:fixed;top:-100px;left:16px;z-index:300;background:var(--primary);color:#fff;padding:12px 20px}.skip-link:focus{top:12px}.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--border-color)}.header-inner{max-width:1240px;padding:16px 24px;margin:auto;display:flex;gap:24px;align-items:center;justify-content:space-between}.brand{display:flex;gap:10px;align-items:center;color:var(--primary-dark);font-weight:800;font-size:18px;line-height:1.4;text-decoration:none;white-space:nowrap}.brand small{display:block;font-size:11px;font-weight:500;letter-spacing:1px;color:var(--text-muted);margin-top:2px}.brand-symbol{display:grid;place-items:center;width:40px;height:44px;border-radius:12px;background:var(--primary);color:#fff}.top-nav{display:flex;align-items:center;gap:21px}.top-nav>a{font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap;color:var(--text-sub);padding:8px 0}.top-nav a[aria-current=page]{color:var(--primary);box-shadow:0 2px var(--primary)}.menu-toggle{display:none;border:1px solid var(--border-color);background:#fff;border-radius:8px;padding:8px 12px;min-height:44px}.mobile-quick{display:none}.header-search{width:44px;height:44px;border:1px solid var(--border-color);border-radius:50%;display:grid;place-items:center}.breadcrumbs{font-size:13px;color:var(--text-muted);padding:24px 0 16px;display:flex;gap:8px;flex-wrap:wrap}.breadcrumbs a{color:var(--text-muted)}.eyebrow{font-size:12px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;color:var(--primary);margin-bottom:12px}.page-intro{padding:20px 0 4px}.page-intro>p{font-size:17px}.hero{padding:48px 0 24px}.hero h1{font-size:39px;letter-spacing:-1.5px}.hero h1 em{color:var(--primary);font-style:normal}.hero-label{display:inline-flex;gap:9px;align-items:center;font-size:13px;font-weight:700;border:1px solid #c7d8ef;padding:5px 12px;border-radius:40px;background:#fff;margin-bottom:24px;color:var(--primary)}.hero-label:before{content:'';width:7px;height:7px;border-radius:50%;background:var(--primary-light)}.hero-description{font-size:17px;max-width:670px}.hero-meta{font-size:13px;color:var(--text-muted);margin-top:18px}.hero-strip{margin:32px 0 0;border-top:1px solid var(--border-color);padding-top:18px;display:flex;gap:20px;flex-wrap:wrap;color:var(--text-sub);font-size:13px}.hero-strip span{display:flex;align-items:center;gap:8px}.hero-strip b{color:var(--primary)}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 16px}.button,.button-secondary,button.primary{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--primary);border:2px solid var(--primary);color:#fff;min-height:50px;padding:11px 20px;border-radius:10px;font-size:15px;font-weight:750;line-height:1.6;text-decoration:none}.button-secondary{background:#fff;color:var(--primary);border-color:#bac9df}.button:hover,button.primary:hover{background:var(--primary-dark)}.button-secondary:hover{background:var(--primary-bg)}.button-full{width:100%}.button-text{min-height:44px;padding:9px 12px;background:#fff;border:1px solid var(--control-border);border-radius:8px;color:var(--primary);font-size:14px}.emergency{background:var(--warning-bg);border:1px solid #f4d49c;color:var(--warning-text);border-radius:12px;padding:18px 20px;margin:24px 0;display:flex;gap:12px;align-items:flex-start;font-size:14px}.emergency p{margin:0;color:inherit}.emergency a{color:inherit;font-weight:800}.card,.hub-card,.calc-form-card,.calc-result-card,.procedure-step-card,.nexus-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow);margin:18px 0}.hub-card,.nexus-card{display:flex;gap:18px;align-items:flex-start;text-decoration:none;color:var(--text-main);position:relative;padding-right:54px}.hub-card:after,.nexus-card:after{content:'↗';position:absolute;right:24px;top:26px;color:var(--primary);font-size:21px}.hub-card h3,.nexus-card h3{margin:0 0 8px;font-size:19px}.hub-card p,.nexus-card p{margin:0;font-size:15px}.hub-card:hover,.nexus-card:hover{border-color:#9cb3db;box-shadow:0 5px 16px #1023430a;transform:translateY(-1px)}.card-icon{display:grid;place-items:center;min-width:48px;width:48px;height:48px;background:var(--primary-bg);color:var(--primary);border-radius:12px}.card--calc{border-left:4px solid var(--primary-light)}.card--forms .card-icon{background:#f1edff;color:#5b3db4}.card--operator .card-icon{background:#e9f5f6;color:#15606a}.card-kicker{display:block;font-size:12px;letter-spacing:.4px;color:var(--text-muted);margin-bottom:7px}.section-label{display:flex;align-items:center;gap:14px;margin-bottom:20px}.section-label .eyebrow{margin:0;white-space:nowrap}.section-label:after{content:'';height:1px;background:var(--border-color);flex:1}.section-heading p{font-size:15px}.geo-summary-box{background:var(--primary-bg);border-left:4px solid var(--primary-light);padding:22px 24px;border-radius:0 12px 12px 0;margin:24px 0}.geo-summary-box h2{font-size:18px}.geo-summary-box p:last-child,.card p:last-child,.procedure-step-card p:last-child{margin-bottom:0}.geo-summary-box ul{padding-left:20px;margin-bottom:0}.notice{border-radius:10px;padding:18px 20px;margin:20px 0;background:var(--primary-bg);color:var(--primary)}.notice p{color:inherit;margin:0}.notice-box-warning{background:var(--warning-bg);color:var(--warning-text)}.notice-box-error{background:var(--error-bg);color:var(--error-text)}.notice-box-success{background:var(--success-bg);color:var(--success-text)}.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.tag{font-size:12px;background:#edf2f7;border:1px solid var(--border-color);color:var(--text-sub);padding:3px 10px;border-radius:40px}.tag--scheduled{color:var(--warning-text);background:var(--warning-bg);border-color:#eed5a5}.toc{background:#fff;border:1px solid var(--border-color);padding:24px;border-radius:14px;margin:28px 0}.toc h2{font-size:18px;margin-bottom:12px}.toc ol{padding-left:24px;margin:0}.toc li{margin:0}.toc a{display:block;padding:10px 0;min-height:44px;font-size:15px;line-height:1.6}.article-section{margin:36px 0;scroll-margin-top:120px}.article-section>h2{display:flex;align-items:center;gap:10px}.article-section>h2:before{content:'';width:4px;height:22px;border-radius:5px;background:var(--primary)}.procedure-step-card{padding-left:76px;position:relative}.step-number{position:absolute;left:24px;top:24px;width:34px;height:34px;display:grid;place-items:center;background:var(--primary-bg);border-radius:50%;font-size:14px;font-weight:800;color:var(--primary)}.table-wrap{overflow-x:auto;border:1px solid var(--border-color);border-radius:12px;background:#fff;margin:20px 0}table{border-collapse:collapse;width:100%;font-size:14px}caption{text-align:left;padding:16px;font-weight:700;color:var(--primary)}th,td{text-align:left;padding:16px;border-bottom:1px solid var(--border-color);vertical-align:top}th{background:#f0f4f9;color:var(--primary-dark);font-weight:700}tr:last-child td{border-bottom:0}.table-wrap th:first-child{min-width:110px}.faq details{border-bottom:1px solid var(--border-color);padding:16px 0}.faq summary{font-weight:700;cursor:pointer;min-height:44px;padding:8px 26px 8px 0}.faq details p{margin:12px 0 8px}.faq details[open] summary{color:var(--primary)}.ad-placement{margin:32px 0;padding:16px 0;border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color);text-align:center;clear:both}.ad-label{display:block;font-size:11px;color:var(--text-muted);letter-spacing:2px;margin-bottom:10px}.adsbygoogle{display:block}.sources{font-size:14px}.sources li{margin-bottom:14px}.source-note{display:block;color:var(--text-muted);font-size:13px}.byline{font-size:13px;color:var(--text-muted);border-top:1px solid var(--border-color);padding-top:18px;margin:24px 0}.site-footer{margin-top:64px;background:var(--primary-dark);color:#fff;padding:40px 0 30px}.site-footer p{color:#c6d0e0;font-size:13px}.site-footer .brand{color:#fff}.footer-links{display:flex;flex-wrap:wrap;gap:12px 22px;margin:24px 0}.footer-links a{color:#e0e8f5;font-size:13px;text-decoration:none}.footer-bottom{border-top:1px solid #ffffff26;padding-top:22px}.footer-bottom p{margin-bottom:8px}.form-field{margin:20px 0}.form-field>label,.field-label{display:block;font-weight:700;margin-bottom:8px}.form-field input:not([type=checkbox]):not([type=radio]),.form-field select,.form-field textarea,.search-input{display:block;width:100%;min-height:52px;border:2px solid var(--control-border);border-radius:9px;padding:12px 14px;background:#fff;color:var(--text-main);font-size:16px;line-height:1.5}.form-field textarea{min-height:120px;resize:vertical}.form-hint{font-size:13px;color:var(--text-muted);margin:7px 0 0}.field-group{padding:20px;background:#f6f8fc;border:1px solid var(--border-color);border-radius:12px;margin:20px 0}.field-group legend{font-weight:800;padding:0 7px;color:var(--primary)}.choice{display:flex;gap:12px;align-items:flex-start;padding:14px;background:#fff;border:2px solid var(--control-border);border-radius:9px;margin:10px 0;cursor:pointer;min-height:52px}.choice input{width:20px;height:20px;margin:4px 0;accent-color:var(--primary);flex-shrink:0}.choice:has(input:checked){background:var(--primary-bg);border-color:var(--primary-light)}.tool-actions{border-top:1px solid var(--border-color);padding-top:24px;margin-top:24px}.result-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.calc-result-card{border-top:5px solid var(--accent-light);scroll-margin-top:130px}.calc-result-card>h2{background:var(--primary-dark);color:#fff;padding:18px 22px;margin:-26px -26px 24px;border-radius:12px 12px 0 0;font-size:20px}.result-text{white-space:pre-wrap;background:#f7f9fc;border:1px solid var(--border-color);padding:20px;font:15px/1.9 inherit;border-radius:10px;overflow-wrap:anywhere}.result-number{font-size:36px;font-weight:800;line-height:1.4;color:var(--primary);margin:16px 0}.summary-row{display:flex;justify-content:space-between;gap:24px;border-bottom:1px solid var(--border-color);padding:12px 0;flex-wrap:wrap}.check-row{border-bottom:1px solid var(--border-color);padding:16px 0}.check-row select{margin-top:10px}.small{font-size:13px;color:var(--text-muted)}.progress-label{font-size:14px;font-weight:700;color:var(--primary)}progress{display:block;width:100%;height:9px;accent-color:var(--primary);margin:12px 0 24px}.search-form{padding:24px;background:#fff;border:1px solid var(--border-color);border-radius:14px;margin:24px 0}.search-form label{display:block;font-weight:700;margin-bottom:10px}.filter-chips{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0}.filter-chips a{padding:8px 13px;border:1px solid #bdcde1;background:#fff;border-radius:30px;font-size:14px;text-decoration:none;min-height:44px;display:inline-flex;align-items:center}.filter-chips a:hover{background:var(--primary-bg)}.list-index{margin:0;padding:0;list-style:none}.list-index li{border-bottom:1px solid var(--border-color)}.list-index a{display:block;padding:16px 0;text-decoration:none;font-weight:600}.list-index small{display:block;font-weight:400;color:var(--text-muted);margin-top:5px}.document-editor{white-space:pre-wrap}.status-line{font-size:14px;min-height:26px;color:var(--primary)}[hidden]{display:none!important}.cookie-note{font-size:13px}noscript .notice{margin:24px 0}
@media(min-width:1061px){.top-nav{display:flex!important}}
@media(max-width:1060px){.header-inner{padding:12px 20px}.menu-toggle{display:block}.top-nav{display:none;position:absolute;top:100%;left:0;right:0;padding:14px 20px;background:#fff;border-bottom:1px solid var(--border-color);box-shadow:var(--shadow);max-height:75vh;overflow-y:auto}.top-nav[data-open=true]{display:block}.top-nav>a{display:block;padding:12px 8px;white-space:normal}.header-search{display:none}.mobile-quick{display:flex;border-top:1px solid #edf1f7;justify-content:center;gap:24px;padding:6px 16px}.mobile-quick a{font-size:12px;text-decoration:none;min-height:32px;display:flex;align-items:center}.hero{padding-top:32px}html{scroll-padding-top:145px}.article-section{scroll-margin-top:145px}}
@media(max-width:540px){.container{padding:0 18px}h1,.hero h1{font-size:28px;letter-spacing:-.8px}h2{font-size:23px}.hero-description,.page-intro>p{font-size:16px}.hero .button-row{display:block}.hero .button-row a{display:flex;margin:12px 0}.hero-strip{gap:12px;font-size:12px}.hero-label{font-size:12px}.card,.hub-card,.calc-form-card,.calc-result-card,.nexus-card{padding:20px;margin:16px 0}.hub-card,.nexus-card{gap:12px;padding-right:40px}.hub-card:after,.nexus-card:after{right:16px;top:20px}.hub-card h3,.nexus-card h3{font-size:18px}.card-icon{width:40px;height:40px;min-width:40px}.hub-card p{font-size:14px}.geo-summary-box{padding:20px}.toc{padding:20px}.procedure-step-card{padding:20px 20px 20px 65px}.step-number{left:18px;top:20px}.calc-result-card>h2{margin:-20px -20px 20px;padding:16px 20px}.result-number{font-size:30px}.button-row .button,.button-row .button-secondary{flex:1 1 100%}.form-field input,.form-field select{max-width:100%}.field-group{padding:16px}.brand{font-size:16px}.brand small{font-size:10px}.brand-symbol{width:34px;height:38px}.result-text{padding:14px}.section{margin:32px 0}.site-footer{margin-top:40px}.table-wrap th,.table-wrap td{padding:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}.hub-card:hover,.nexus-card:hover{transform:none}}
.page-intro>.direct-answer{color:var(--text-main);font-weight:700;line-height:1.85;margin:20px 0 12px}.content-dates{font-size:13px;color:var(--text-muted);line-height:1.8;margin:0 0 22px}.content-dates time{white-space:nowrap}
@media(max-width:540px){.header-inner{gap:8px;padding:10px 16px}.site-header .brand{font-size:14px;white-space:normal;gap:8px}.site-header .brand small{font-size:9px}.menu-toggle{padding:8px 10px;font-size:14px;flex-shrink:0}}
