.platform-hero{padding:64px 0 74px;background:linear-gradient(180deg,#fff 0%,#eff6ff 100%)}.platform-hero__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.9fr);gap:46px;align-items:center}.platform-hero h1{margin:18px 0;font-size:clamp(2.45rem,5vw,3.7rem);line-height:1.12;color:var(--brand-dark)}.platform-hero p{color:var(--muted);font-size:1.08rem}.platform-visual{position:relative;overflow:hidden;border-radius:28px;background:#dcebf6;box-shadow:var(--shadow)}.platform-visual>img{display:block;width:100%;aspect-ratio:3/2;object-fit:cover}.platform-badge{position:absolute;right:18px;bottom:18px;display:grid;place-items:center;min-width:150px;min-height:76px;padding:16px 22px;border-radius:18px;background:rgba(255,255,255,.94);box-shadow:0 12px 30px rgba(18,58,90,.18)}.platform-badge img{width:112px;max-height:42px}.platform-mark{display:grid;place-items:center;min-height:360px;padding:54px;border:1px solid var(--line);border-radius:28px;background:radial-gradient(circle at 50% 25%,#fff 0%,#eff6ff 70%);box-shadow:var(--shadow)}.platform-mark img{width:min(250px,80%);max-height:130px}.platform-mark span{margin-top:28px;color:var(--muted);font-weight:700}.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.pain{padding:26px;border-radius:20px;background:#fff;border:1px solid var(--line)}.pain svg{width:36px;height:36px;color:var(--brand)}.pain h3{color:var(--brand-dark);margin:16px 0 8px}.pain p{color:var(--muted);margin:0}.platform-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.platform-flow__step{padding:25px;border-radius:18px;background:#fff;border:1px solid var(--line)}.platform-flow__step b{display:flex;width:40px;height:40px;align-items:center;justify-content:center;border-radius:12px;background:#e0f2fe;color:var(--brand-dark)}.platform-flow__step h3{color:var(--brand-dark);margin:16px 0 8px}.platform-flow__step p{color:var(--muted);margin:0;font-size:.93rem}.split{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}.split__media{overflow:hidden;border-radius:24px;box-shadow:var(--shadow)}.split__media img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover}.check-list{display:grid;gap:12px}.check-list li{display:grid;grid-template-columns:28px 1fr;gap:10px;align-items:start;color:var(--muted)}.check-list b{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:#dcfce7;color:var(--green)}.fit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.fit{padding:25px;border:1px solid var(--line);border-radius:18px;background:#fff}.fit h3{color:var(--brand-dark)}.fit p{margin:0;color:var(--muted)}.platform-faq{display:grid;grid-template-columns:1fr 1fr;gap:14px}.platform-faq details{padding:20px 22px;border:1px solid var(--line);border-radius:16px;background:#fff}.platform-faq summary{cursor:pointer;font-weight:800;color:var(--brand-dark)}.platform-faq p{margin-bottom:0;color:var(--muted)}
.pain .number{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:#e0f2fe;color:var(--brand-dark);font-weight:900}
.readiness-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}.readiness-list article{display:grid;grid-template-columns:88px 1fr;gap:18px;padding:24px;border:1px solid var(--line);border-radius:18px;background:#fff}.readiness-list b{color:var(--brand);font-size:.82rem}.readiness-list h3,.responsibility-grid h3,.campaign-brief h3,.channel-cases h3{margin:0 0 7px;color:var(--brand-dark)}.readiness-list p,.responsibility-grid li,.campaign-brief p,.channel-cases p{margin:0;color:var(--muted)}
.responsibility-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.responsibility-grid article{padding:30px;border:1px solid var(--line);border-radius:22px;background:#fff}.responsibility-grid span{display:inline-flex;padding:6px 11px;border-radius:999px;background:#e0f2fe;color:var(--brand);font-size:.84rem;font-weight:800}.responsibility-grid h3{margin-top:16px}.responsibility-grid ul{display:grid;gap:10px;margin:18px 0 0;padding-left:20px}
.campaign-brief{display:grid;grid-template-columns:1fr 1fr;gap:16px}.campaign-brief article{display:grid;grid-template-columns:100px 1fr;gap:18px;padding:25px;border:1px solid #cfe3f3;border-radius:18px;background:#fff}.campaign-brief b,.channel-cases b{color:var(--brand);font-size:.82rem;letter-spacing:.04em}
.channel-cases{display:grid;gap:14px}.channel-cases article{display:grid;grid-template-columns:110px 1fr;gap:22px;align-items:start;padding:22px 25px;border:1px solid var(--line);border-radius:18px;background:#fff}.notice a{display:block;margin-top:5px;color:var(--brand-dark);font-weight:700}
.sku-map{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}.sku-map article{position:relative;padding:28px;border:1px solid var(--line);border-radius:20px;background:#fff}.sku-map article:not(:last-child)::after{content:"→";position:absolute;z-index:2;right:-25px;top:50%;display:grid;width:32px;height:32px;place-items:center;border:1px solid #cfe3f3;border-radius:50%;background:#eff6ff;color:var(--brand);font-weight:900;transform:translateY(-50%)}.sku-map b{display:inline-flex;padding:6px 10px;border-radius:999px;background:#e0f2fe;color:var(--brand);font-size:.78rem;letter-spacing:.04em}.sku-map h3{margin:15px 0 8px;color:var(--brand-dark)}.sku-map p{margin:0;color:var(--muted)}
.stock-board{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:24px;align-items:start}.stock-board__intro{padding:30px;border-radius:22px;background:var(--brand-dark);color:#fff}.stock-board__intro h3{margin:14px 0 10px;font-size:1.55rem}.stock-board__intro p{margin:0;color:#d8e8f4}.stock-board__rows{display:grid;gap:12px}.stock-board__row{display:grid;grid-template-columns:90px 1fr;gap:18px;padding:20px 22px;border:1px solid var(--line);border-radius:17px;background:#fff}.stock-board__row b{color:var(--brand);font-size:.82rem}.stock-board__row h3{margin:0 0 6px;color:var(--brand-dark);font-size:1.03rem}.stock-board__row p{margin:0;color:var(--muted);font-size:.93rem}
.launch-check{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.launch-check article{display:grid;grid-template-columns:48px 1fr;gap:16px;padding:24px;border:1px solid var(--line);border-radius:18px;background:#fff}.launch-check b{display:grid;width:42px;height:42px;place-items:center;border-radius:13px;background:#e0f2fe;color:var(--brand-dark)}.launch-check h3{margin:0 0 7px;color:var(--brand-dark)}.launch-check p{margin:0;color:var(--muted)}
@media(max-width:900px){.platform-hero__grid,.split{grid-template-columns:1fr}.platform-mark{min-height:280px}.pain-grid{grid-template-columns:1fr}.platform-flow{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.platform-hero{padding:48px 0 62px}.platform-hero h1{font-size:2.35rem;overflow-wrap:anywhere}.platform-mark{min-height:240px;padding:36px}.platform-flow,.fit-grid,.platform-faq{grid-template-columns:1fr}}
@media(max-width:760px){.readiness-list,.responsibility-grid,.campaign-brief,.sku-map,.stock-board,.launch-check{grid-template-columns:1fr}.readiness-list article,.campaign-brief article,.channel-cases article,.stock-board__row{grid-template-columns:1fr;gap:9px}.sku-map article:not(:last-child)::after{content:"↓";right:auto;left:50%;top:auto;bottom:-26px;transform:translateX(-50%)}}