:root{--bg: #ffffff;--bg-alt: #f4f7f8;--bg-mint: #eef9f6;--panel: #ffffff;--panel2: #f4f6f8;--line: #e4e8ec;--txt: #17181f;--muted: #5b616c;--accent: #00e0b8;--accent-ink: #0b7a66;--on-accent: #05271f;--tint: #e6f7f2;--tint-line: #b6e5d9;--shadow: 0 1px 2px rgba(20,32,44,.05), 0 10px 26px rgba(20,32,44,.05)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--txt);font-family:Hiragino Kaku Gothic ProN,Noto Sans JP,Yu Gothic UI,Meiryo,sans-serif;line-height:1.85;-webkit-font-smoothing:antialiased}.container{max-width:1040px;margin:0 auto;padding:0 24px}.container-narrow{max-width:760px;margin:0 auto;padding:0 24px}.accent{color:var(--accent-ink)}.muted{color:var(--muted)}.small{font-size:.85rem}.center{text-align:center}.site-header{position:sticky;top:0;z-index:50;background:#ffffffe0;backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;gap:24px;height:60px}.logo{font-weight:800;font-size:1.1rem;color:var(--txt);text-decoration:none;letter-spacing:.02em;display:flex;align-items:center;gap:9px}.nav{display:flex;gap:20px;margin-left:auto}.nav a{color:var(--muted);text-decoration:none;font-size:.9rem}.nav a:hover{color:var(--txt)}.btn{display:inline-block;border:none;border-radius:10px;padding:15px 36px;font-size:1rem;font-weight:700;line-height:1.4;cursor:pointer;text-decoration:none;text-align:center;font-family:inherit}.btn-primary{background:var(--accent);color:var(--on-accent);box-shadow:0 6px 18px #00e0b838}.btn-primary:hover{filter:brightness(1.06)}.btn-sm{padding:9px 20px;font-size:.85rem;border-radius:8px}.section{padding:64px 0}.section-cta{background-color:var(--bg-mint);border-top:1px solid var(--line);text-align:center}.kicker{color:var(--accent-ink);font-weight:700;font-size:.78rem;letter-spacing:.28em;margin-bottom:10px}.cta-p{margin-top:26px;margin-bottom:14px}.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:28px;box-shadow:var(--shadow)}.col-lead{max-width:560px;margin:22px auto 0;text-align:left}.col-lead-row{display:grid;grid-template-columns:1.4fr 1fr;gap:12px}.col-lead label{display:block;font-size:13px;font-weight:600;color:var(--text)}.col-lead input{width:100%;margin-top:6px;padding:11px 12px;border:1px solid var(--line);border-radius:9px;background:var(--panel2);color:var(--text);font-size:14px;box-sizing:border-box}.col-lead input:focus{outline:none;border-color:var(--accent)}.col-lead .btn-wide{width:100%;margin-top:14px}.col-lead #col-lead-status{margin:10px 0 0;text-align:center}.col-lead-alt{margin-top:18px}@media(max-width:560px){.col-lead-row{grid-template-columns:1fr}}.badge{display:inline-block;border-radius:999px;padding:3px 12px;font-size:.75rem;font-weight:700}.badge.inbound{background:var(--tint);color:var(--accent-ink);border:1px solid var(--tint-line)}.badge.internal{background:#eef2fb;color:#33509e;border:1px solid #ccd8f2}.badge.common{background:var(--panel2);color:var(--muted);border:1px solid var(--line)}.site-footer{border-top:1px solid var(--line);padding:28px 0;background:var(--bg)}.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;font-size:.88rem;color:var(--muted)}.footer-brand{display:flex;align-items:center;gap:8px}.footer-inner a{text-decoration:none}.article h1{font-size:clamp(1.5rem,3.4vw,2.05rem);line-height:1.45;font-weight:800;margin:10px 0 14px}.article-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:.85rem;margin-bottom:26px}.article .lead{font-size:1.02rem;color:var(--muted)}.prose h2{font-size:1.32rem;font-weight:800;margin:44px 0 14px;padding-left:14px;border-left:4px solid var(--accent);line-height:1.5}.prose h3{font-size:1.08rem;font-weight:700;margin:30px 0 10px}.prose p{margin:0 0 18px}.prose ul,.prose ol{margin:0 0 18px;padding-left:1.5em}.prose li{margin-bottom:8px}.prose table{width:100%;border-collapse:collapse;font-size:.92rem;margin:0 0 22px}.prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}.prose thead th{background:var(--panel2)}.prose blockquote{border-left:4px solid var(--tint-line);background:var(--bg-mint);padding:14px 18px;border-radius:0 10px 10px 0;margin:0 0 20px;color:var(--txt);font-size:.95rem}.prose blockquote p{margin:0 0 6px}.prose blockquote p:last-child{margin:0}.prose a{color:var(--accent-ink);font-weight:600}.prose strong{color:var(--txt)}.prose hr{border:none;border-top:1px solid var(--line);margin:34px 0}.faq-block{margin-top:46px}.faq-block h2{font-size:1.25rem;font-weight:800;margin-bottom:16px}.faq-item{border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin-bottom:12px;background:var(--panel)}.faq-item .q{font-weight:700;margin-bottom:6px}.faq-item .q:before{content:"Q. ";color:var(--accent-ink);font-weight:800}.faq-item .a{color:var(--muted);font-size:.95rem}.related{margin-top:46px}.related h2{font-size:1.15rem;font-weight:800;margin-bottom:14px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.related-card{border:1px solid var(--line);border-radius:12px;padding:16px 18px;background:var(--panel);text-decoration:none;color:var(--txt);display:block}.related-card:hover{border-color:var(--accent)}.related-card .t{font-weight:700;font-size:.92rem;line-height:1.55;margin-top:8px}.breadcrumb{font-size:.82rem;color:var(--muted);margin:22px 0 6px}.breadcrumb a{color:var(--muted);text-decoration:none}.breadcrumb a:hover{color:var(--accent-ink)}@media(max-width:820px){.nav{display:none}.related-grid{grid-template-columns:1fr}.section{padding:48px 0}}