:root{--blue:#07358f;--navy:#041d62;--royal:#0647bd;--pale:#edf5ff;--red:#f12646;--gold:#f4c74c;--ink:#111a2d;--muted:#526177;--line:#cbd9ef;--shadow:0 12px 32px rgba(6,37,103,.12);font-family:"Noto Sans JP","Yu Gothic",Meiryo,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;color:var(--ink);background:#f7f9fc;line-height:1.8;-webkit-font-smoothing:antialiased}a{color:var(--blue)}img{display:block;max-width:100%}.shell,.article{width:min(920px,calc(100% - 40px));margin-inline:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid #dce7f6;backdrop-filter:blur(12px)}.header-inner{width:min(1080px,calc(100% - 40px));min-height:74px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:9px;color:var(--blue);text-decoration:none;line-height:1}.brand-mark{width:44px;height:44px;display:grid;place-items:center;border:5px solid var(--blue);border-radius:50%;font-size:19px}.brand small{display:block;font-size:11px;font-weight:800;letter-spacing:.15em}.brand strong{display:block;margin-top:4px;font-size:20px;font-weight:900}.header-nav{display:flex;align-items:center;gap:22px}.header-nav a{font-size:13px;font-weight:800;text-decoration:none}.header-phone{color:var(--blue);font-size:17px;font-weight:900}.btn{min-height:52px;padding:12px 26px;display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:999px;background:linear-gradient(135deg,#ff2b50,#ed193c);color:#fff;font-weight:900;text-align:center;text-decoration:none;box-shadow:0 5px 0 rgba(116,10,30,.18)}.btn-small{min-height:42px;padding:8px 18px;border-radius:8px;font-size:13px}.breadcrumb{width:min(1080px,calc(100% - 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/* 2026-08-06: keep child-page title blocks full width and use natural wrapping */
.article h1{width:100%;text-wrap:wrap;word-break:auto-phrase;overflow-wrap:break-word}