:root{--color-bg-base: #FFFFFF;--color-bg-subtle: #F8F8FC;--color-bg-muted: #F0F0F8;--color-bg-overlay: rgba(26, 26, 46, .5);--color-surface-raised: #FFFFFF;--color-border-default: #E5E5EF;--color-border-strong: #A8A8C0;--color-border-focus: #4A5FBD;--color-text-primary: #1A1A2E;--color-text-secondary: #6B6B8A;--color-text-muted: #A8A8C0;--color-text-inverse: #FFFFFF;--color-text-link: #4A5FBD;--color-brand-primary: #4A5FBD;--color-brand-hover: #7B8ED4;--color-brand-subtle: #EEF0FB;--color-level-n5: #5B8C5A;--color-level-n5-bg: #EDF5ED;--color-level-n4: #4A5FBD;--color-level-n4-bg: #EEF0FB;--color-level-n3: #C9902A;--color-level-n3-bg: #FDF6E7;--color-level-n2: #E87FA0;--color-level-n2-bg: #FDF0F4;--color-level-n1: #E53E3E;--color-level-n1-bg: #FFF5F5;--color-success: #5B8C5A;--color-success-bg: #EDF5ED;--color-error: #E53E3E;--color-error-bg: #FFF5F5;--color-warning: #C9902A;--color-warning-bg: #FDF6E7;--font-family-display: "Noto Serif JP", Georgia, serif;--font-family-body: "Noto Sans JP", system-ui, sans-serif;--font-family-mono: "JetBrains Mono", "Courier New", monospace;--font-size-2xs: .64rem;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-md: 1rem;--font-size-lg: 1.25rem;--font-size-xl: 1.5rem;--font-size-2xl: 2rem;--font-size-3xl: 2.5rem;--font-weight-regular: 400;--font-weight-medium: 500;--font-weight-bold: 700;--line-height-tight: 1.2;--line-height-snug: 1.4;--line-height-normal: 1.6;--line-height-relaxed: 1.8;--letter-spacing-tight: -.02em;--letter-spacing-normal: 0;--letter-spacing-wide: .05em;--letter-spacing-wider: .1em;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-7: 32px;--space-8: 40px;--space-9: 48px;--space-10: 64px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(26, 26, 46, .06), 0 1px 3px rgba(26, 26, 46, .04);--shadow-md: 0 4px 6px rgba(26, 26, 46, .07), 0 2px 4px rgba(26, 26, 46, .05);--shadow-lg: 0 10px 15px rgba(26, 26, 46, .08), 0 4px 6px rgba(26, 26, 46, .04);--shadow-xl: 0 20px 25px rgba(26, 26, 46, .1), 0 10px 10px rgba(26, 26, 46, .05);--height-navbar: 64px;--height-btn-sm: 32px;--height-btn-md: 44px;--height-btn-lg: 52px;--duration-fast: .1s;--duration-normal: .2s;--duration-slow: .3s;--duration-slower: .5s;--easing-default: cubic-bezier(.4, 0, .2, 1);--easing-spring: cubic-bezier(.34, 1.56, .64, 1);--easing-out: cubic-bezier(0, 0, .2, 1)}.dark{--color-bg-base: #0F0F1A;--color-bg-subtle: #16162A;--color-bg-muted: #1E1E35;--color-bg-overlay: rgba(0, 0, 0, .7);--color-surface-raised: #1E1E35;--color-border-default: rgba(255, 255, 255, .08);--color-border-strong: rgba(255, 255, 255, .15);--color-border-focus: #7B8ED4;--color-text-primary: #E8E8F4;--color-text-secondary: #9090B0;--color-text-muted: #5C5C80;--color-text-inverse: #0F0F1A;--color-text-link: #7B8ED4;--color-brand-primary: #7B8ED4;--color-brand-hover: #9AAAE0;--color-brand-subtle: rgba(74, 95, 189, .15);--color-level-n5: #8DB88C;--color-level-n5-bg: rgba(91, 140, 90, .15);--color-level-n4: #7B8ED4;--color-level-n4-bg: rgba(74, 95, 189, .15);--color-level-n3: #E2B96A;--color-level-n3-bg: rgba(201, 144, 42, .15);--color-level-n2: #F2AABF;--color-level-n2-bg: rgba(232, 127, 160, .15);--color-level-n1: #FC8181;--color-level-n1-bg: rgba(229, 62, 62, .15);--color-success: #8DB88C;--color-success-bg: rgba(91, 140, 90, .15);--color-error: #FC8181;--color-error-bg: rgba(229, 62, 62, .15);--color-warning: #E2B96A;--color-warning-bg: rgba(201, 144, 42, .15);--shadow-md: 0 4px 6px rgba(0, 0, 0, .3), 0 2px 4px rgba(0, 0, 0, .2);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .4), 0 4px 6px rgba(0, 0, 0, .2)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{background:var(--color-bg-base);color:var(--color-text-primary);font-family:var(--font-family-body);font-size:var(--font-size-md);line-height:var(--line-height-normal);-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}img{max-width:100%;height:auto;display:block}a{color:var(--color-text-link)}:focus-visible{outline:2px solid var(--color-border-focus);outline-offset:3px}.container{width:100%;max-width:1280px;margin-inline:auto;padding-inline:var(--space-5)}@media(min-width:768px){.container{padding-inline:var(--space-7)}}@media(min-width:1024px){.container{padding-inline:var(--space-9)}}.skip-link{position:absolute;top:-100%;left:var(--space-4);background:var(--color-brand-primary);color:var(--color-text-inverse);padding:var(--space-3) var(--space-5);border-radius:var(--radius-md);z-index:9999;transition:top var(--duration-fast);text-decoration:none}.skip-link:focus{top:var(--space-4)}.section{padding:var(--space-10) 0}.section__title{font-family:var(--font-family-display);font-size:var(--font-size-2xl);font-weight:var(--font-weight-bold);color:var(--color-text-primary);text-align:center;margin-bottom:var(--space-3)}.section__subtitle{font-family:var(--font-family-body);font-size:var(--font-size-lg);color:var(--color-text-secondary);text-align:center;margin-bottom:var(--space-8);max-width:640px;margin-inline:auto}@media(max-width:767px){.section{padding:var(--space-8) 0}.section__title{font-size:var(--font-size-xl)}.section__subtitle{font-size:var(--font-size-md)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.dark .navbar{background:#0f0f1ad9}.dark .navbar__links{background:#0f0f1afa}.dark .navbar__link:hover{background:var(--color-bg-muted)}.navbar[data-astro-cid-ri6uxye2]{position:sticky;top:0;z-index:100;height:var(--height-navbar, 64px);background:#ffffffd9;backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border-default, #e5e5ef)}.navbar__inner[data-astro-cid-ri6uxye2]{display:flex;align-items:center;justify-content:space-between;height:100%}.navbar__logo[data-astro-cid-ri6uxye2]{display:flex;align-items:center;gap:8px;text-decoration:none}.navbar__logo-kanji[data-astro-cid-ri6uxye2]{font-family:"Noto Serif JP",Georgia,serif;font-size:1.5rem;color:var(--color-brand-primary, #4A5FBD)}.navbar__logo-text[data-astro-cid-ri6uxye2]{font-family:Noto Sans JP,system-ui,sans-serif;font-size:1.25rem;font-weight:500;color:var(--color-text-primary, #1A1A2E)}.navbar__links[data-astro-cid-ri6uxye2]{display:flex;list-style:none;gap:8px;margin:0;padding:0}.navbar__link[data-astro-cid-ri6uxye2]{color:var(--color-text-secondary, 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JP,system-ui,sans-serif;font-size:.875rem;color:var(--color-text-muted, #A8A8C0);max-width:320px;line-height:1.6}.footer__nav[data-astro-cid-l3trhy4j]{display:flex;flex-direction:column;gap:8px}.footer__link[data-astro-cid-l3trhy4j]{color:var(--color-text-secondary, #6B6B8A);text-decoration:none;font-family:Noto Sans JP,system-ui,sans-serif;font-size:.875rem;transition:color .2s}.footer__link[data-astro-cid-l3trhy4j]:hover{color:var(--color-text-primary, #1A1A2E)}.footer__bottom[data-astro-cid-l3trhy4j]{margin-top:32px;padding-top:16px;border-top:1px solid var(--color-border-default, #e5e5ef)}.footer__bottom[data-astro-cid-l3trhy4j] p[data-astro-cid-l3trhy4j]{font-family:Noto Sans JP,system-ui,sans-serif;font-size:.75rem;color:var(--color-text-muted, #A8A8C0);margin:0}@media(max-width:480px){.footer__inner[data-astro-cid-l3trhy4j]{flex-direction:column;gap:24px}.footer__tagline[data-astro-cid-l3trhy4j]{max-width:100%}}