:root{font-family:"Segoe UI","Microsoft YaHei",sans-serif;color:#203c37;background:#f7faf5;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible{outline:3px solid #1b8171;outline-offset:4px}.online-shell{max-width:1180px;margin:auto;padding:0 44px}.online-header{height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #d9e4dc}.online-header a{font-weight:750;font-size:28px;color:inherit;text-decoration:none}.online-header span{display:inline-block;margin-left:20px;font-size:13px;font-weight:400}.online-header button{border:1px solid #aac3b5;border-radius:6px;background:white;color:inherit;padding:10px 18px;cursor:pointer}.online-entry{display:grid;grid-template-columns:1.1fr 1fr;gap:80px;align-items:start;padding:90px 0}.online-intro h1{font-size:clamp(32px,4vw,48px);line-height:1.3;letter-spacing:-1px;max-width:12em;margin:28px 0 20px}.online-intro p{font-size:17px;line-height:1.8;max-width:30em}.online-intro .online-note{font-size:13px;color:#526d60;margin-top:36px}.online-emblem{display:grid;place-items:center;width:80px;height:80px;border-radius:24px 24px 24px 6px;background:#d9eacb;color:#245c45;font-size:50px;font-weight:800}.online-entry .qhub-account{background:white;padding:30px}.online-entry .qhub-account form button[type=submit]{background:#24614d;color:white;border-color:#24614d}@media(max-width:760px){.online-shell{padding:0 22px}.online-header{height:78px}.online-header span{display:none}.online-entry{grid-template-columns:1fr;gap:28px;padding:36px 0}.online-intro h1{margin:16px 0}.online-intro .online-note{margin-top:18px}.online-emblem{width:56px;height:56px;font-size:34px;border-radius:16px 16px 16px 4px}.online-entry .qhub-account{padding:22px}}
.online-course-button{padding:14px 24px;border:0;border-radius:8px;background:#24614d;color:white;cursor:pointer;font-weight:600;margin-top:12px}
.online-world-entry{margin:-30px 0 40px;text-align:center}.online-world{margin-bottom:40px}.online-world-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px}.online-world button{font:inherit;padding:8px 12px;margin:4px;border:1px solid #aac3b5;border-radius:6px;background:white;color:inherit;cursor:pointer}.online-world iframe{width:100%;height:min(70vh,720px);min-height:340px;border:0;border-radius:12px;background:#102b25}.online-world h2{font-size:24px}.online-world p{line-height:1.6}@media(max-width:760px){.online-world-toolbar{align-items:flex-start}.online-world-toolbar button{font-size:12px}}
.online-chat{max-width:760px;margin:0 auto 60px;padding:28px;background:white;border:1px solid #d9e4dc;border-radius:16px}.online-chat-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.online-chat h2{margin:0;font-size:24px}.online-chat button{border:1px solid #aac3b5;border-radius:6px;padding:10px 16px;background:#f7faf5;color:#203c37;cursor:pointer}.online-chat button:disabled{opacity:.5;cursor:default}.online-chat-hint,.online-chat-notice{font-size:13px;line-height:1.6;color:#526d60}.online-chat-messages{max-height:420px;overflow:auto;overscroll-behavior:contain}.online-message{padding:16px;margin:12px 0;background:#f2f6ef;border-radius:8px}.online-message-user{background:#e7f1ed}.online-message strong{font-size:13px}.online-message p{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7;margin:8px 0 0}.online-chat-label{display:block;font-size:14px;margin:12px 0 8px}.online-chat textarea{width:100%;resize:vertical;min-height:90px;font:inherit;color:inherit;padding:12px;border:1px solid #aac3b5;border-radius:8px}.online-chat textarea:focus-visible{outline:2px solid #1b8171;outline-offset:2px}.online-chat-actions{display:flex;justify-content:flex-end;margin-top:12px}.online-chat-actions button{background:#24614d;color:white}@media(max-width:760px){.online-chat{padding:18px}.online-chat-heading{align-items:flex-start}.online-chat-heading button{font-size:12px}}