@media(max-width:760px){main>section.container:first-of-type{grid-template-columns:1fr!important;padding-top:48px!important}main.container article.card,main.container>div:nth-of-type(2){grid-template-columns:1fr!important}}:root{--ink:#172a30;--muted:#718085;--paper:#f5f6f2;--line:#e2e8e5;--green:#176d5c;--mint:#dcece5}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}::selection{background:#b9dfcf;color:#153f35}.container{width:min(1180px,calc(100% - 48px));margin-inline:auto}.serif{font-family:Georgia,Songti SC,serif}.eyebrow{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--green);font-weight:700}.card{border:1px solid var(--line);background:#fff;border-radius:14px;transition:transform .2s,border-color .2s}.card:hover{transform:translateY(-3px);border-color:#9abeb0}.pill{display:inline-flex;align-items:center;padding:6px 10px;border-radius:99px;background:#edf4ef;color:#356958;font-size:11px}.grid-subjects{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px}.subject{min-height:125px;padding:17px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.68);transition:.2s}.subject:hover{background:white;transform:translateY(-2px);border-color:#aac9bc}.subject-icon{font-size:21px;color:#36836d}.model-shell{height:460px;background:radial-gradient(ellipse at center,#fff 0,#edf2ee 75%);border-radius:18px;overflow:hidden}.site-nav{height:72px;display:flex;align-items:center;border-bottom:1px solid var(--line)}@media(max-width:850px){.grid-subjects{grid-template-columns:repeat(3,minmax(0,1fr))}.model-shell{height:340px}}@media(max-width:560px){.container{width:calc(100% - 32px)}.grid-subjects{grid-template-columns:repeat(2,minmax(0,1fr))}.subject{min-height:105px;padding:13px}.hide-mobile{display:none!important}.model-shell{height:280px}}@media(max-width:760px){.hero{grid-template-columns:1fr!important;padding-top:48px!important;gap:28px!important}.hero-visual{min-height:280px!important}.model-layout,.source-card{grid-template-columns:1fr!important}}