:root{--ink:#151515;--muted:#686868;--line:#e8e8e8;--tint:#f7f8fa;--accent:#2264e5;--max:1080px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;background:#fff}a{color:inherit;text-decoration:none}.container{width:min(var(--max),calc(100% - 40px));margin:auto}.article{max-width:780px;padding:80px 20px 100px}.article h1{font-size:clamp(34px,5vw,52px);line-height:1.2;letter-spacing:-.05em;margin:0 0 42px}.article-body h2{font-size:26px;line-height:1.3;margin:42px 0 12px}.article-body h3{font-size:19px;margin:28px 0 8px}.article-body p,.article-body li{font-size:16px}.article-body ul,.article-body ol{padding-left:24px}.article-source{margin-top:48px;padding:18px;border:1px solid var(--line);border-radius:8px;color:var(--muted);font-size:13px}.back,.back-link{color:var(--accent);font-size:14px}.back-link{display:inline-block;margin-top:20px}.nav{height:72px;display:flex;align-items:center;justify-content:space-between}.site-header{border-bottom:1px solid var(--line);background:#fff}.brand{font-size:20px;font-weight:750;letter-spacing:-.03em}.brand span{font-weight:500;color:var(--muted)}nav{display:flex;gap:24px;font-size:14px;color:var(--muted)}nav a:hover,.card span,.product a{color:var(--accent)}.hero{background:linear-gradient(120deg,#f6f8ff,#fff 62%);padding:110px 0 120px}.hero-inner{max-width:1080px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:48px}.hero-visual{display:flex;justify-content:center;align-items:center;min-height:300px;border-radius:18px;background:#eef2fa;overflow:hidden}.hero-visual img{display:block;width:100%;height:auto;object-fit:contain}.hero h1{max-width:720px;margin:0 0 18px;font-size:clamp(38px,6vw,68px);line-height:1.12;letter-spacing:-.06em}.lead{max-width:620px;color:var(--muted);font-size:19px}.hero-actions{display:flex;gap:12px;margin-top:30px}.button{padding:11px 20px;border-radius:8px;font-size:14px;font-weight:650}.primary{background:var(--ink);color:white}.secondary{border:1px solid var(--line);background:white}.section{padding:92px 0}.section-heading{margin-bottom:30px}.section-heading h2{margin:0 0 8px;font-size:36px;line-height:1.2;letter-spacing:-.04em}.section-heading p:last-child{margin:0;color:var(--muted)}.card-grid,.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.product-grid-wide{grid-template-columns:repeat(3,1fr)}.card,.product{border:1px solid var(--line);border-radius:12px;padding:26px;background:#fff;transition:transform .2s,box-shadow .2s}.card:hover,.product:hover{transform:translateY(-3px);box-shadow:0 10px 30px #0000000d}.card h3,.product h3{margin:0 0 8px;font-size:19px}.card p,.product p{min-height:54px;margin:0 0 20px;color:var(--muted);font-size:14px}.card span,.product a{font-size:14px;font-weight:650}.tint{background:var(--tint)}.product-icon{display:grid;place-items:center;width:46px;height:46px;margin-bottom:22px;border-radius:12px;background:#eef3ff;color:var(--accent);font-weight:800}.product-image{overflow:hidden}.product-image>img{display:block;width:calc(100% + 52px);height:190px;margin:-26px -26px 24px;object-fit:contain;background:#f4f6fa}.product-placeholder{display:grid;place-items:center;width:100%;height:190px;margin:-26px -26px 24px;padding:26px;width:calc(100% + 52px);background:#eef3ff;color:var(--accent);font-size:48px;font-weight:800}.task-list{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}.task-list a{padding:18px 4px;border-bottom:1px solid var(--line);font-weight:600}.task-list a:after{content:"→";float:right;color:var(--accent)}.narrow{max-width:760px}.notice{padding:22px 24px;border-left:3px solid var(--accent);background:white}.notice p{margin:6px 0 0;color:var(--muted);font-size:14px}.site-footer{padding:42px 0;border-top:1px solid var(--line);font-size:14px}.site-footer p{margin:4px 0;color:var(--muted)}.muted{font-size:12px}@media(max-width:700px){.container{width:min(var(--max),calc(100% - 28px))}.nav{height:auto;padding:18px 0;align-items:flex-start;gap:16px}nav{display:none}.hero{padding:76px 0 84px}.hero-grid{grid-template-columns:1fr;gap:30px}.hero-visual{min-height:200px}.hero h1{font-size:42px}.lead{font-size:17px}.section{padding:64px 0}.card-grid,.product-grid,.product-grid-wide{grid-template-columns:1fr}.task-list{grid-template-columns:1fr}.card p,.product p{min-height:0}}