@font-face{font-family:Source Han Sans Title;src:url(/assets/source-han-sans-title.woff2) format("woff2");font-weight:700;font-style:normal;font-display:swap}:root{font-family:PingFang SC,Microsoft YaHei,sans-serif;color:#25364c;background:#f5f7fa;font-synthesis:none;--page-background: #f5f7fa;--title-color: #0081f1}*{box-sizing:border-box}body{margin:0}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible{outline:3px solid #0081f1;outline-offset:5px}.home{min-height:max(768px,100svh);position:relative;overflow:clip;background:var(--page-background)}.header{height:64px;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;position:relative;z-index:2}.brand{display:block;position:relative;width:145px;height:24px}.brand img{position:absolute;display:block}.brand-ai{left:19.83%;top:10.1%}.brand-symbol{left:0;top:0}.brand-wordmark{left:32.48%;top:5.8%}.auth-area{position:relative;display:flex;align-items:center}.login-button{display:inline-flex;align-items:center;height:34px;padding:0 18px;border-radius:8px;background:linear-gradient(90deg,#a4e35b,#45b649);color:#fff;text-decoration:none;font-size:14px;font-weight:500;box-shadow:0 4px 12px #45b6493d}.login-button:hover{opacity:.92}.user-chip{display:flex;align-items:center;gap:8px;height:34px;padding:0 12px 0 6px;border:1px solid #dfe2e8;border-radius:999px;background:#fff;color:#25364c;font-size:14px}.user-chip:hover{border-color:#9ae637}.user-avatar{width:24px;height:24px;border-radius:50%;background:#e7ffb8;color:#418c00;display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}.user-name{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-caret{font-size:10px;color:#929aa6}.user-menu{position:absolute;right:0;top:42px;width:220px;padding:12px;border:1px solid #dfe2e8;border-radius:10px;background:#fff;box-shadow:0 12px 32px #1f27331f;z-index:10}.user-school{margin-bottom:8px;font-size:14px;font-weight:700;color:#1f2733}.user-row{font-size:13px;line-height:24px;color:#5f6a7a}.switch-button{display:flex;align-items:center;justify-content:center;width:100%;height:34px;margin-top:10px;border:1px solid #dfe2e8;border-radius:8px;background:#fff;color:#5f6a7a;font-size:13px;text-decoration:none}.switch-button:hover{border-color:#9ae637;color:#418c00;background:#f7ffeb}.logout-button{width:100%;height:34px;margin-top:8px;border:1px solid #dfe2e8;border-radius:8px;background:#fff;color:#5f6a7a;font-size:13px}.logout-button:hover{border-color:#9ae637;color:#418c00;background:#f7ffeb}.ambient{position:absolute;top:172px;left:calc(50% - 174px);width:379px;height:243px;pointer-events:none}.ambient img{position:absolute;display:block;top:-180px;left:-180px}.content{position:relative;display:flex;flex-direction:column;align-items:center;gap:120px;padding:120px 80px 96px}.hero{display:flex;align-items:center;flex-direction:column;gap:24px}h1{margin:0;color:var(--title-color);font-family:Source Han Sans Title,Source Han Sans CN VF,Source Han Sans SC,sans-serif;font-size:52px;font-weight:700;line-height:60px;letter-spacing:5px;white-space:nowrap;text-align:center;transform:scaleX(.98882)}.tagline{width:464px;height:40px;border-radius:4px 20px 20px;position:relative;display:flex;align-items:center;justify-content:center;padding:8px 24px}.tagline>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:inherit;pointer-events:none}.tagline p{position:relative;margin:0;white-space:pre;color:#fff;font-size:18px;font-weight:500;line-height:24px;letter-spacing:.8px}.module-panel{width:100%;max-width:1200px;padding:48px 32px;border-radius:20px;background:linear-gradient(169.51599751428deg,#ecffebb3 3.4345%,#ffffffb3 43.795%);-webkit-backdrop-filter:blur(30px);backdrop-filter:blur(30px);filter:drop-shadow(0 5px 15px rgba(70,182,74,.05));position:relative}.module-panel:after{content:"";position:absolute;inset:0;border:2px solid rgba(255,255,255,.4);border-radius:inherit;pointer-events:none}.module-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.module-card{display:block;width:100%;aspect-ratio:272 / 148;border:0;padding:0;background:transparent;border-radius:12px;transition:transform .18s ease,box-shadow .18s ease}.module-card img{display:block;width:100%;height:100%;object-fit:cover}@media(hover:hover){.module-card:hover{transform:translateY(-5px);box-shadow:0 12px 24px #386b9214}}.module-card:active{transform:translateY(-1px)}.module-dialog{border:1px solid #fff;border-radius:20px;padding:36px;width:min(440px,calc(100% - 40px));color:#25364c;background:#f9fcff;box-shadow:0 20px 80px #1e4a6e26}.module-dialog::backdrop{background:#19334f40;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.module-dialog h2{color:var(--title-color);margin:0 0 16px}.module-dialog p{line-height:1.7}.dialog-note{color:#6b7b8e;font-size:14px}.dialog-close{position:absolute;right:8px;top:8px;width:44px;height:44px;border:0;background:transparent;color:#6b7b8e;font-size:28px}.return-button{border:0;border-radius:10px;padding:12px 24px;margin-top:8px;background:#0081f1;color:#fff}@media(max-width:1000px){.content{padding:100px 40px 80px;gap:88px}.module-panel{max-width:640px;padding:32px}.module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:560px){.home{min-height:100svh}.header{padding-inline:20px}.user-name{display:none}.content{padding:76px 20px 56px;gap:64px}.hero{gap:20px;max-width:100%}h1{font-size:32px;line-height:44px;letter-spacing:2px;transform:none}.tagline{width:334px;max-width:calc(100vw - 40px);height:36px;padding:6px 10px}.tagline p{font-size:12px;letter-spacing:.6px}.ambient{top:124px}.module-panel{padding:24px 16px}.module-grid{gap:12px}}@media(prefers-reduced-motion:reduce){.module-card{transition:none}}