.cs-index,.study-shell{--cs-navy:#071a2d;--cs-blue:#0e304d;--cs-gold:#c9a45b;--cs-paper:#f5f5f7;background:radial-gradient(circle at 80% 12%,#c9a45b2e,transparent 28rem),var(--cs-paper);color:#112235;min-height:100vh}.cs-bar{z-index:30;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);background:#ffffffd1;border-bottom:1px solid #071a2d1a;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;min-height:72px;padding:12px clamp(18px,5vw,72px);display:grid;position:sticky;top:0}.cs-bar>a{font-weight:750}.cs-bar>strong{color:var(--cs-navy);font-family:Georgia,Noto Serif TC,serif;font-size:1.1rem}.cs-bar button{color:var(--cs-navy);cursor:pointer;background:#fff;border:1px solid #071a2d26;border-radius:999px;justify-self:end;align-items:center;gap:7px;padding:.55rem .8rem;font-weight:800;display:flex}.cs-index-hero{background:linear-gradient(135deg,var(--cs-navy),#123b5c);color:#fff;padding:clamp(70px,10vw,140px) clamp(22px,9vw,150px)}.cs-index-hero>p:first-child{color:var(--cs-gold);letter-spacing:.16em;font-size:.78rem;font-weight:900}.cs-index-hero h1{max-width:1050px;margin:.8rem 0 1.4rem;font-family:Georgia,Noto Serif TC,serif;font-size:clamp(2.3rem,5vw,5rem);line-height:1.08}.cs-index-hero>p:last-child{color:#d4dee7;max-width:820px;font-size:1.1rem}.cs-catalog{padding:clamp(44px,7vw,90px) clamp(20px,8vw,120px)}.case-card{background:#ffffffc2;border:1px solid #fffffff2;border-radius:32px;max-width:1100px;margin:auto;padding:clamp(26px,5vw,58px);box-shadow:0 28px 70px -30px #071a2d4d}.case-card-top{color:#856624;letter-spacing:.08em;justify-content:space-between;font-size:.8rem;font-weight:850;display:flex}.case-card h2{max-width:800px;margin:1.2rem 0 .6rem;font-family:Georgia,Noto Serif TC,serif;font-size:clamp(2rem,4vw,4rem);line-height:1.12}.case-sub{color:#486072;font-weight:750}.case-meta{flex-wrap:wrap;gap:10px;margin:24px 0;display:flex}.case-meta span{background:#edf1f4;border-radius:999px;align-items:center;gap:7px;padding:.55rem .75rem;font-size:.84rem;font-weight:750;display:flex}.case-meta svg{width:17px}.case-card>p:last-of-type{color:#596978;max-width:800px;font-size:1.05rem}.case-open{background:linear-gradient(135deg,#e2c78e,#c9a45b 58%,#aa8744);border-radius:999px;align-items:center;gap:12px;margin-top:18px;padding:.82rem 1.1rem;font-weight:900;display:inline-flex}.cs-footer{text-align:center;color:#dbe4eb;background:#04111e;padding:36px;font-size:.9rem}@media (width<=700px){.cs-bar{grid-template-columns:1fr auto}.cs-bar>strong{display:none}.cs-index-hero{padding-top:62px}.case-card-top{flex-direction:column;align-items:flex-start;gap:6px}.case-meta{flex-direction:column;align-items:flex-start}}