:root{--font-ja: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", YuGothic, Meiryo, sans-serif;--font-en: "Inter", "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--color-navy: #0b2d4f;--color-navy-hover: #071f38;--color-teal: #0c9b92;--color-teal-hover: #087d76;--color-teal-soft: #ddf4f1;--color-bg: #ffffff;--color-bg-gray: #f6f8f9;--color-bg-mint: #eff9f7;--color-text: #172b3a;--color-text-muted: #526371;--color-text-light: #7b8994;--color-border: #dce3e7;--color-border-light: #e9eef1;--color-white: #ffffff;--color-warning: #d97706;--fs-h1: 48px;--fs-h2: 28px;--fs-card-title: 17px;--fs-card-title-lg: 20px;--fs-body: 15px;--fs-body-lg: 16px;--fs-caption: 13px;--fs-button: 14px;--fs-nav: 13px;--fw-regular: 400;--fw-medium: 500;--fw-semibold: 600;--fw-bold: 700;--lh-h1: 1.28;--lh-heading: 1.4;--lh-card-title: 1.5;--lh-body: 1.8;--lh-body-lg: 1.85;--lh-caption: 1.7;--ls-h1: -.02em;--ls-heading: -.015em;--ls-body: .01em;--ls-button: .02em;--container-max: 1200px;--container-padding: 24px;--section-padding-lg: 72px;--section-padding-md: 56px;--section-padding-sm: 44px;--gap-xs: 8px;--gap-sm: 12px;--gap-md: 16px;--gap-lg: 24px;--gap-xl: 32px;--gap-2xl: 48px;--radius-xs: 4px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 12px;--radius-xl: 16px;--border-default: 1px solid var(--color-border);--border-light: 1px solid var(--color-border-light);--shadow-card: 0 2px 10px rgb(11 45 79 / 4%);--shadow-card-hover: 0 8px 24px rgb(11 45 79 / 8%);--button-height: 48px;--button-height-sm: 44px;--button-radius: 6px;--button-padding-x: 24px;--icon-sm: 20px;--icon-md: 32px;--icon-lg: 40px;--icon-stroke: 1.75;--transition-fast: .15s ease;--transition-base: .2s ease;color-scheme:light}@media(max-width:767px){:root{--container-padding: 20px;--fs-h1: 32px;--fs-h2: 22px;--fs-card-title: 16px;--fs-card-title-lg: 18px;--fs-body: 14px;--fs-body-lg: 15px;--fs-caption: 12px;--lh-h1: 1.35;--ls-heading: -.01em;--ls-button: .01em;--section-padding-lg: 44px;--section-padding-md: 40px;--section-padding-sm: 36px}}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font-ja);font-size:var(--fs-body);line-height:var(--lh-body);letter-spacing:var(--ls-body);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}a{color:var(--color-navy)}img{max-width:100%}.num,.en{font-family:var(--font-en)}.container{max-width:var(--container-max);margin-inline:auto;padding-inline:var(--container-padding)}.section{padding-block:var(--section-padding-sm)}.section--lg{padding-block:var(--section-padding-lg)}.section--gray{background:var(--color-bg-gray)}.section--mint{background:var(--color-bg-mint)}.section-title{margin:0 0 28px;font-size:var(--fs-h2);font-weight:var(--fw-bold);line-height:var(--lh-heading);letter-spacing:var(--ls-heading);color:var(--color-navy)}.section-title span{font-size:.72em;letter-spacing:0}@media(max-width:767px){.section-title{margin-bottom:20px}}.icon{width:var(--icon-md);height:var(--icon-md);stroke:var(--color-teal);stroke-width:var(--icon-stroke);stroke-linecap:round;stroke-linejoin:round;fill:none;flex:none}.icon--sm{width:var(--icon-sm);height:var(--icon-sm)}.icon--lg{width:var(--icon-lg);height:var(--icon-lg);stroke-width:1.6}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:var(--button-height);padding-inline:var(--button-padding-x);border-radius:var(--button-radius);font-size:var(--fs-button);font-weight:var(--fw-semibold);line-height:1;letter-spacing:var(--ls-button);text-decoration:none;transition:background-color var(--transition-base),border-color var(--transition-base),transform var(--transition-base)}.btn-primary{background:var(--color-navy);color:#fff;border:1px solid var(--color-navy)}.btn-primary:hover{background:var(--color-navy-hover);border-color:var(--color-navy-hover);transform:translateY(-1px)}.btn-teal{background:var(--color-teal);color:#fff;border:1px solid var(--color-teal)}.btn-teal:hover{background:var(--color-teal-hover);border-color:var(--color-teal-hover);transform:translateY(-1px)}.btn-outline{min-height:var(--button-height-sm);padding-inline:20px;background:transparent;color:#fff;border:1px solid rgb(255 255 255 / 70%)}.btn-outline:hover{background:#ffffff1a}.btn .icon{stroke:currentcolor}.card{display:block;padding:var(--gap-lg);border-radius:var(--radius-lg);border:var(--border-default);background:#fff;box-shadow:var(--shadow-card);text-decoration:none;color:inherit;transition:transform var(--transition-base),box-shadow var(--transition-base),border-color var(--transition-base)}a.card:hover{transform:translateY(-2px);border-color:#cbd7dc;box-shadow:var(--shadow-card-hover)}@media(max-width:767px){.card{padding:20px;border-radius:var(--radius-md)}}.card-title{font-size:var(--fs-card-title);font-weight:var(--fw-bold);line-height:var(--lh-card-title);color:var(--color-navy)}.card-text{font-size:var(--fs-caption);line-height:var(--lh-caption);color:var(--color-text-muted)}.searchbox{display:flex;align-items:center;gap:10px;height:52px;padding-inline:16px;border:1px solid #aab8c2;border-radius:var(--radius-sm);background:#fff;width:min(100%,520px)}.searchbox .icon{stroke:var(--color-text-light)}.searchbox input{flex:1;min-width:0;border:0;outline-offset:4px;font:inherit;font-size:14px;color:inherit;background:transparent}.prose{max-width:760px;margin-inline:auto;padding-inline:var(--container-padding)}.prose h1{font-size:30px;font-weight:var(--fw-bold);line-height:1.45;letter-spacing:var(--ls-heading);color:var(--color-navy)}.prose h2{margin-top:2.5em;padding-left:12px;border-left:4px solid var(--color-teal);font-size:21px;font-weight:var(--fw-bold);line-height:var(--lh-heading);color:var(--color-navy)}.prose h3{margin-top:2em;font-size:17px;font-weight:var(--fw-bold);color:var(--color-navy)}.prose table{width:100%;margin:1.2rem 0;border-collapse:collapse;font-size:14px}.prose th,.prose td{border:var(--border-default);padding:8px 10px;text-align:left}.prose th{background:var(--color-bg-gray)}.prose blockquote{margin:1.2rem 0;padding:12px 16px;border-left:3px solid var(--color-border);background:var(--color-bg-gray);color:var(--color-text-muted)}@media(max-width:767px){.prose h1{font-size:23px}.prose h2{font-size:18px}}.site-header{border-bottom:var(--border-light);background:#fff}.header-inner{display:flex;align-items:center;gap:var(--gap-lg);min-height:72px;padding-block:10px}.logo{text-decoration:none;color:var(--color-navy);flex:none}.logo strong{display:block;font-size:24px;font-weight:var(--fw-bold);line-height:1.2;letter-spacing:-.01em}.logo small{display:block;margin-top:3px;font-size:10px;font-weight:var(--fw-regular);line-height:1.4;color:var(--color-text-muted)}.gnav{display:flex;flex-wrap:wrap;gap:22px;margin-inline:auto;list-style:none;padding:0}.gnav a{font-size:var(--fs-nav);font-weight:var(--fw-semibold);line-height:1.4;color:var(--color-text);text-decoration:none;white-space:nowrap}.gnav a:hover{color:var(--color-teal)}.header-search{flex:none;width:200px;height:36px}.header-search .searchbox{height:36px;padding-inline:12px;border-color:var(--color-border);border-radius:999px}.header-search input{font-size:12px}@media(max-width:1023px){.header-search{display:none}}@media(max-width:767px){.header-inner{flex-wrap:wrap;gap:var(--gap-sm)}.gnav{margin-inline:0;width:100%;gap:14px;overflow-x:auto;padding-bottom:4px}}.cta-band{background:var(--color-navy);color:#fff;padding-block:22px}.cta-band__inner{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:var(--gap-sm)}.cta-band__lead{margin:0 8px 0 0;font-size:20px;font-weight:var(--fw-bold);letter-spacing:var(--ls-heading)}.cta-band .btn-outline{padding-inline:16px;gap:6px}@media(max-width:767px){.cta-band__lead{font-size:17px;width:100%;text-align:center;margin-right:0}.cta-band__inner{gap:var(--gap-sm)}}.site-footer{padding-block:32px 40px;font-size:var(--fs-caption);line-height:var(--lh-caption);color:var(--color-text-muted)}.site-footer__top{display:flex;flex-wrap:wrap;gap:var(--gap-lg) var(--gap-2xl);align-items:flex-start}.site-footer nav ul{display:flex;flex-wrap:wrap;gap:8px 20px;list-style:none;margin:0;padding:0}.site-footer a{color:var(--color-text-muted);text-decoration:none}.site-footer a:hover{color:var(--color-teal)}.footer-media{margin-top:24px;padding-top:20px;border-top:var(--border-light)}.footer-media h2{margin:0 0 12px;font-size:12px;font-weight:600;color:var(--color-text-light)}.footer-media__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:var(--gap-lg) var(--gap-2xl)}.footer-media__group h3{margin:0 0 6px;font-size:11px;letter-spacing:.06em;color:var(--color-text-light)}.footer-media ul{display:grid;gap:4px;list-style:none;margin:0;padding:0;font-size:12px}.footer-media span{color:var(--color-text-light)}.site-footer__note{margin:20px 0 0;padding-top:16px;border-top:var(--border-light);font-size:12px;color:var(--color-text-light)}.site-footer__copy{margin:8px 0 0;font-size:12px;color:var(--color-text-light)}