:root{--bg:#faf6ee;--card:#ffffff;--text:#33404e;--heading:#1d3f77;--muted:#6b7684;--line:#e8e2d6;--accent:#2e7cc9;--accent-soft:#eaf4fd;--main-btn:#b45309;--main-btn-hover:#92400e;--box:#f6f1e7;--badge-bg:#e6f0fb;--badge-text:#1d3f77;--hero-1:#cfe6fa;--hero-2:#eaf4fd;--hero-3:#fdf3dc;--glow:rgba(253,214,130,0.55);--check:#4f9a45;--table-base:#d6ebf9;--table-head:#e2673f;--table-cell:#fcf6ea;--header-bg:rgba(255,255,255,0.92);--shadow:0 2px 10px rgba(29,63,119,0.07);--shadow-hover:0 8px 22px rgba(29,63,119,0.13);--radius:18px;--max:760px;--max-wide:1080px}@media (prefers-color-scheme:dark){:root{--bg:#171d25;--card:#222a35;--text:#e3e8ee;--heading:#a9cdf2;--muted:#a3adb9;--line:#36404d;--accent:#8cc3ea;--accent-soft:#24313d;--main-btn:#d9822b;--main-btn-hover:#e8963f;--box:#2a323d;--badge-bg:#2b3a4c;--badge-text:#cfe3f7;--hero-1:#1c2c40;--hero-2:#1b2532;--hero-3:#2a2620;--glow:rgba(217,160,60,0.18);--check:#5fae55;--table-base:#1f3044;--table-head:#c4562f;--table-cell:#2c3440;--header-bg:rgba(23,29,37,0.92);--shadow:0 2px 10px rgba(0,0,0,0.3);--shadow-hover:0 8px 22px rgba(0,0,0,0.45)}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body),"Hiragino Kaku Gothic ProN","Yu Gothic UI",Meiryo,sans-serif;font-size:17px;line-height:1.9;overflow-x:clip}.footer-name,.post-card-title,.site-title,h1,h2,h3{font-family:var(--font-head),var(--font-body),sans-serif}a{color:var(--accent)}img{max-width:100%;height:auto;display:block}.wrap{max-width:var(--max)}.wrap,.wrap-wide{margin:0 auto;padding:0 16px}.wrap-wide{max-width:var(--max-wide)}.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:10;background:var(--header-bg);border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.site-header .wrap-wide{display:flex;align-items:center;justify-content:space-between;gap:8px 16px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px}.site-title{display:inline-flex;align-items:center;gap:8px;font-size:1.25rem;font-weight:900;color:var(--heading);text-decoration:none;letter-spacing:.02em}.site-title-mark{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--hero-2);font-size:1.1rem}.site-nav{display:flex;flex-wrap:wrap;gap:4px 20px;font-size:.9rem}.site-nav a{color:var(--text);text-decoration:none}.site-nav a:hover{color:var(--accent)}main{padding:24px 0 56px}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line);padding:32px 28px}@media (max-width:480px){.card{padding:22px 16px}}.home{margin-top:-24px}.full-bleed{width:100vw;margin-left:calc(50% - 50vw)}.hero{position:relative;text-align:center;padding:56px 16px 64px;background:linear-gradient(var(--hero-1) 0,var(--hero-2) 42%,var(--hero-3) 78%,var(--bg) 100%);overflow:hidden}.hero:before{content:"";position:absolute;left:50%;bottom:-140px;width:420px;height:420px;transform:translateX(-50%);border-radius:50%;background:radial-gradient(var(--glow),transparent 70%);pointer-events:none}.hero-inner{position:relative;max-width:640px;margin:0 auto}.hero-logo{width:132px;height:132px;margin:0 auto 20px;border-radius:50%;background:var(--card);box-shadow:0 8px 24px rgba(29,63,119,.15);display:flex;flex-direction:column;align-items:center;justify-content:center}.hero-logo-icon{font-size:2.6rem;line-height:1.1}.hero-logo-text{font-family:var(--font-head),sans-serif;font-size:1rem}.hero h1,.hero-logo-text{font-weight:900;color:var(--heading)}.hero h1{margin:0 0 12px;font-size:2.5rem;line-height:1.3;letter-spacing:.04em}.hero-desc{margin:0 0 20px;color:var(--text)}.chips{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;justify-content:center;gap:6px 22px}.chips li{display:inline-flex;align-items:center;gap:6px;font-size:.9rem;font-weight:500;color:var(--text)}.chips li:before{content:"✓";display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--check);color:#fff;font-size:.75rem;font-weight:700;line-height:1}.btn{display:inline-block;padding:12px 28px;border-radius:999px;font-weight:700;font-size:.95rem;text-decoration:none;transition:transform .15s,background .15s}.btn:hover{transform:translateY(-2px)}.btn-main{background:var(--main-btn);color:#fff;box-shadow:0 4px 12px rgba(180,83,9,.3)}.btn-main:hover{background:var(--main-btn-hover)}.btn-sub{background:var(--card);color:var(--heading);border:1.6px solid var(--accent)}.home-section{padding-top:56px}.category-buttons{list-style:none;padding:0;margin:0 0 32px;display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.category-buttons .btn{padding:10px 22px}.category-count{display:inline-block;margin-left:8px;min-width:1.6em;padding:0 6px;border-radius:999px;background:var(--hero-2);color:var(--heading);font-size:.8rem;line-height:1.6;text-align:center}.category-buttons .btn-main .category-count{background:rgba(255,255,255,.25);color:#fff}#topics .category-buttons{margin-bottom:0}.back-home{text-align:center;margin-top:36px}.section-title{text-align:center;font-size:1.7rem;font-weight:900;color:var(--heading);margin:0 0 8px}.section-lead{text-align:center;color:var(--muted);margin:0 0 28px;font-size:.95rem}.intro-title{text-align:center;font-size:1.2rem;font-weight:900;color:var(--heading);margin:0 0 14px}.intro-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 32px}.intro-card p{margin:0 0 1em}.intro-card p:last-child{margin-bottom:0}.feature-grid,.post-grid{list-style:none;padding:0;display:grid;grid-gap:20px;gap:20px;width:min(var(--max-wide) - 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