:root{--blue:#000091;--blue-2:#1212ff;--blue-soft:#e3e3fd;--red:#e1000f;--green:#00a95f;--green-soft:#c3fad5;--ink:#1e1e1e;--text:#3a3a3a;--muted:#666;--line:#ddd;--bg:#f6f6f6;--white:#fff;--radius:8px;--shadow:0 6px 18px rgba(0,0,18,.08);--shadow-lg:0 14px 38px rgba(0,0,18,.12)}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--text);background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased}a{color:var(--blue);text-decoration:underline}a:hover{color:var(--blue-2)}button,input,select{font:inherit}.container{max-width:1080px;margin:0 auto;padding:0 24px}.container-narrow{max-width:820px;margin:0 auto;padding:0 24px}.tricolor-bar{height:5px;background:linear-gradient(90deg,#002395 33.33%,#fff 33.33%,#fff 66.66%,#ed2939 66.66%)}.header{background:#fff;border-bottom:1px solid #e5e5e5;position:sticky;top:0;z-index:100}.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}.logo{display:flex;align-items:center;gap:12px;text-decoration:none}.logo-flag{width:44px;height:30px;border-radius:3px;overflow:hidden;display:flex;box-shadow:0 1px 3px rgba(0,0,0,.12)}.logo-flag span{flex:1}.logo-flag span:nth-child(1){background:#002395}.logo-flag span:nth-child(2){background:#fff}.logo-flag span:nth-child(3){background:#ed2939}.logo-text{display:flex;flex-direction:column;line-height:1.18}.logo-title{font-weight:800;color:var(--blue);font-size:1.05rem}.logo-subtitle{font-size:.65rem;color:#666;text-transform:uppercase;letter-spacing:.02em}.nav-main{display:flex;align-items:center;gap:2px}.nav-main a{padding:8px 12px;border-radius:4px;font-size:.88rem;font-weight:700;color:#3a3a3a;text-decoration:none}.nav-main a:hover,.nav-main a:first-child{background:var(--blue-soft);color:var(--blue)}.hamburger{display:none;background:transparent;border:0;padding:8px;cursor:pointer}.hamburger span{display:block;width:22px;height:2px;background:#2a2a2a;margin:5px 0;transition:transform .2s,opacity .2s}.hero{background:var(--blue);color:#fff;padding:48px 0 66px;position:relative;overflow:hidden}.hero::before{content:"";position:absolute;inset:0 -120px 0 auto;width:460px;background:linear-gradient(135deg,rgba(255,255,255,.08),rgba(255,255,255,0));transform:skewX(-15deg)}.hero .container{position:relative;z-index:1}.hero-badge{display:inline-flex;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:4px;padding:5px 12px;font-size:.75rem;font-weight:800;margin-bottom:14px}.hero h1{font-size:2.05rem;line-height:1.22;margin-bottom:12px;color:#fff;font-weight:850}.hero p{font-size:1.06rem;opacity:.88;max-width:760px}.calc-section{margin-top:-36px;position:relative;z-index:2;padding-bottom:42px}.calc-card{background:#fff;border:1px solid #e5e5e5;border-radius:var(--radius);box-shadow:var(--shadow-lg);overflow:hidden}.calc-header{display:flex;align-items:center;gap:10px;background:#f6f6f6;border-bottom:2px solid var(--blue);padding:16px 24px}.calc-header h2{font-size:1.02rem;color:var(--blue)}.calc-body{padding:24px}.calc-grid{display:grid;grid-template-columns:1fr .92fr;gap:22px}.panel{border:1px solid #e5e5e5;border-radius:var(--radius);padding:22px;background:#fff}.mode-tabs{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:18px}.tab{border:1px solid #ddd;background:#fff;border-radius:4px;color:#555;padding:12px;font-weight:800;cursor:pointer}.tab.active{background:var(--blue);border-color:var(--blue);color:#fff}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label,.field span{font-size:.76rem;font-weight:850;color:#555;text-transform:uppercase;letter-spacing:.04em}.field small{color:#666;font-size:.82rem}input,select,textarea{width:100%;border:1px solid #ddd;border-radius:4px;padding:12px;background:#fff;color:#1e1e1e;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}.input-wrap{display:flex;align-items:center;border:1px solid #ddd;border-radius:4px;overflow:hidden;background:#fff}.input-wrap input{border:0;box-shadow:none}.input-wrap span{padding:0 12px;color:#666;font-weight:800}.method-box{margin-top:16px;background:linear-gradient(180deg,#fff,#f7f7ff);border:1px solid #d8d8f8;border-radius:var(--radius);padding:16px;box-shadow:0 2px 8px rgba(0,0,145,.06)}.method-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.method-title>span:first-child{font-size:.76rem;font-weight:850;color:#555;text-transform:uppercase;letter-spacing:.04em}.info-dot{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:var(--blue);color:#fff;font-weight:900;font-size:.82rem;font-family:ui-serif,Georgia,serif}.method-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.method-options label{display:grid;grid-template-columns:auto 1fr;column-gap:9px;row-gap:2px;align-items:start;border:1px solid #dcdcf4;border-radius:6px;background:#fff;padding:12px;font-size:.9rem;color:#333;cursor:pointer}.method-options label:has(input:checked){border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}.method-options input{width:auto;margin-top:4px;accent-color:var(--blue)}.method-options strong{line-height:1.25;color:#1e1e1e}.method-options small{grid-column:2;color:#666;font-size:.78rem;line-height:1.35}.method-help{margin-top:11px;background:var(--blue-soft);border-left:4px solid var(--blue);border-radius:4px;padding:11px 12px;color:#333;font-size:.86rem;line-height:1.5}.method-help strong{color:var(--blue)}.result-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.eyebrow{display:inline-flex;background:var(--green-soft);color:#18753c;border-radius:4px;padding:5px 12px;font-size:.76rem;font-weight:850}.copy-btn{border:1px solid var(--blue);background:#fff;color:var(--blue);border-radius:4px;padding:8px 12px;font-weight:800;cursor:pointer}.copy-btn:hover{background:var(--blue-soft)}.result-main{background:var(--blue);color:#fff;border-radius:var(--radius);padding:24px;margin-bottom:12px}.result-main span,.result-list span{display:block;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;font-weight:800;opacity:.74}.result-main 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h2,.section-title h2{font-size:1.7rem;line-height:1.25;color:#1e1e1e;margin-bottom:16px;font-weight:850}.article-content h3{font-size:1.15rem;color:#1e1e1e;margin:22px 0 8px}.article-content p{margin-bottom:14px;color:#555;line-height:1.82}.highlight-box{background:var(--blue-soft);border-left:4px solid var(--blue);border-radius:4px;padding:16px;margin:18px 0;color:#333}.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.info-card{background:#fff;border:1px solid #e5e5e5;border-radius:var(--radius);padding:22px;box-shadow:0 2px 6px rgba(0,0,18,.06)}.info-card h3{font-size:1.12rem;color:#1e1e1e;margin-bottom:8px}.check-list{padding-left:0;list-style:none;display:grid;gap:9px;margin-top:14px}.check-list li{position:relative;padding-left:28px;color:#555}.check-list li::before{content:'✓';position:absolute;left:0;color:var(--green);font-weight:900}.faq-list details{background:#fff;border:1px solid #e5e5e5;border-radius:var(--radius);margin:10px 0;padding:18px;box-shadow:0 2px 6px rgba(0,0,18,.06)}.faq-list summary{font-weight:850;color:#1e1e1e;cursor:pointer}.faq-list p{margin-top:10px;color:#555}.footer{background:#161616;color:#fff;text-align:left}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px;padding:40px 0 28px}.footer h4{font-size:1rem;margin-bottom:10px;color:#fff}.footer p{color:rgba(255,255,255,.72);font-size:.9rem}.footer a{display:block;color:rgba(255,255,255,.72);text-decoration:none;font-size:.9rem;margin:6px 0}.footer a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;text-align:center}.footer-bottom p{font-size:.82rem;color:rgba(255,255,255,.6)}.breadcrumb{font-size:.85rem;color:#666;padding:16px 0 0}.breadcrumb a{text-decoration:none;font-weight:800}.page h1{font-size:2rem;color:#1e1e1e;margin-bottom:16px}.page h2{font-size:1.2rem;color:var(--blue);margin:28px 0 10px}.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px}.contact-form{display:flex;flex-direction:column;gap:16px;border:1px solid #e5e5e5;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.button-submit{border:0;border-radius:4px;background:var(--blue);color:#fff;font-weight:850;padding:13px 18px;cursor:pointer}@media(max-width:900px){.header-inner{position:relative}.nav-main{display:none}.nav-main.open{position:absolute;top:calc(100% + 1px);left:24px;right:24px;display:flex;flex-direction:column;align-items:stretch;background:#fff;border:1px solid #e5e5e5;border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:8px;z-index:200}.nav-main.open a{display:block;padding:13px 14px;font-size:.95rem}.hamburger{display:block}.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}.hamburger.open span:nth-child(2){opacity:0}.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.calc-grid,.contact-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.calc-body{padding:18px}}@media(max-width:560px){.container,.container-narrow{padding-left:16px;padding-right:16px}.header-inner{height:68px}.logo-subtitle{display:none}.hero{padding:36px 0 54px}.hero h1{font-size:1.62rem}.form-grid,.method-options,.cards{grid-template-columns:1fr}.calc-section{margin-top:-26px}.calc-header,.calc-body,.panel{padding:16px}.result-main strong{font-size:2.05rem}.result-list div{display:grid}.footer-grid{grid-template-columns:1fr}.content-section{padding:42px 0}}