*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;background:var(--page);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
button,input{font:inherit}
button{-webkit-tap-highlight-color:transparent}
.topbar{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
.topbar-inner{width:min(100%,780px);height:70px;margin:auto;padding:9px 16px;display:flex;align-items:center;justify-content:space-between}
.top-identity{display:flex;align-items:center;gap:10px;min-width:0}
.identity-copy{min-width:0}
.identity-copy strong{display:block;font-size:17px;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.identity-copy small{display:flex;align-items:center;gap:6px;margin-top:5px;color:#5d7e76;font-size:12px;white-space:nowrap}
.identity-copy small i{width:7px;height:7px;border-radius:50%;background:#21c979}
.avatar{position:relative;flex:none;display:grid;place-items:center;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;box-shadow:0 0 0 3px #fff,0 0 0 4px var(--line)}
.avatar img{width:100%;height:100%;object-fit:cover;border-radius:inherit}
.avatar span{font-size:20px}
.avatar-small{width:46px;height:46px}
.avatar-medium{width:48px;height:48px}
.online-dot{position:absolute;right:-1px;bottom:1px;width:12px;height:12px;border:2px solid #fff;border-radius:50%;background:#21c979}
.top-actions{display:flex;gap:12px}
.top-actions button{min-width:42px;border:0;background:transparent;color:var(--brand);display:grid;justify-items:center;gap:3px;padding:4px;cursor:pointer}
.top-actions button>i{font-size:19px}
.top-actions button span{font-size:10px;color:#60766f;max-width:48px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.page-shell{width:min(100%,780px);margin:0 auto;padding:14px 12px 128px}
.campus-hero{position:relative;height:250px;border-radius:22px;overflow:hidden;background:#dfeeea}
.campus-hero>img{width:100%;height:100%;object-fit:cover;object-position:center}
.campus-hero::after{content:"";position:absolute;inset:0;background:rgba(237,249,246,.38)}
.campus-hero-copy{position:absolute;z-index:1;left:18px;right:44%;top:18px;padding:12px;background:rgba(255,255,255,.82);border-radius:15px;color:#0e3c35}
.campus-label{display:inline-block;padding:6px 10px;background:rgba(255,255,255,.86);border-left:3px solid var(--brand);font-size:12px;font-weight:700}
.campus-hero h1{margin:10px 0 7px;font-size:30px;line-height:1.12;letter-spacing:.02em}
.campus-hero p{margin:0;font-size:13px;line-height:1.6;font-weight:600}
.hero-intro{margin-top:11px;color:#31564e;font-size:10px;line-height:1.55}
.hero-intro span{display:block}
.welcome-panel{margin-top:14px;padding:18px;background:rgba(255,255,255,.8);border:1px solid var(--line);border-radius:18px}
.welcome-title{display:flex;align-items:center;gap:13px}
.welcome-title span{font-size:12px;color:#658078}
.welcome-title h2{margin:3px 0 0;font-size:20px}
.intro{margin:14px 0;color:#3f5c55;font-size:14px;line-height:1.75}
.intro p{margin:2px 0}
.knowledge{display:flex;gap:8px;align-items:flex-start;margin:0;padding-top:12px;border-top:1px solid var(--line);color:#6a817b;font-size:12px;line-height:1.55}
.knowledge i{color:var(--brand);margin-top:2px}
.campus-facts{display:grid;grid-template-columns:repeat(4,1fr);margin:14px 0;padding:15px 6px;background:var(--surface);border:1px solid var(--line);border-radius:18px}
.campus-facts>div{min-width:0;padding:0 7px;text-align:center;border-right:1px solid var(--line)}
.campus-facts>div:last-child{border-right:0}
.campus-facts i{display:block;margin-bottom:8px;color:var(--brand);font-size:17px}
.campus-facts strong,.campus-facts span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.campus-facts strong{font-size:11px}
.campus-facts span{margin-top:4px;color:#7a8c87;font-size:10px}
.knowledge-strip{margin:-5px 7px 0;padding:0;border:0;background:transparent}
.question-section{margin-top:25px}
.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin:0 6px 12px}
.section-heading h2{margin:2px 0 0;font-size:22px}
.section-heading p{margin:0 0 2px;color:#80908c;font-size:11px}
.section-kicker{color:var(--brand);font-size:9px;font-weight:800;letter-spacing:.16em}
.question-list{overflow:hidden;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:0 12px 35px rgba(21,73,63,.06)}
.question-card{width:100%;min-height:60px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--ink);padding:8px 15px;display:grid;grid-template-columns:34px 1fr 14px;align-items:center;gap:11px;text-align:left;cursor:pointer;transition:background-color .16s}
.question-card:last-child{border-bottom:0}
.question-card:hover,.question-card:focus-visible{background:#eff8f5;outline:0}
.question-card:active{background:#e4f2ee}
.question-icon{width:34px;height:34px;display:grid;place-items:center;border-radius:11px;background:#e7f4f0;color:var(--brand);font-size:14px}
.question-copy{font-size:14px;line-height:1.45}
.question-arrow{color:#9baba7;font-size:11px}
.resource-panel{display:flex;align-items:center;gap:15px;margin-top:16px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px}
.resource-panel img{width:72px;height:72px;object-fit:contain;padding:5px;border:1px solid var(--line);border-radius:12px}
.resource-panel span,.resource-panel strong,.resource-panel p{display:block;margin:0}
.resource-panel span{color:var(--brand);font-size:10px;font-weight:800;letter-spacing:.12em}
.resource-panel strong{margin:4px 0;font-size:15px}
.resource-panel p{color:#7c8e89;font-size:11px}
.chat-panel{margin-top:26px;padding-bottom:12px}
.chat-panel[hidden]{display:none}
.chat-divider{display:flex;align-items:center;gap:10px;margin-bottom:18px;color:#91a09c;font-size:11px}
.chat-divider::before,.chat-divider::after{content:"";height:1px;background:var(--line);flex:1}
.message{display:flex;align-items:flex-end;gap:9px;margin:14px 2px}
.message.user{justify-content:flex-end}
.message-avatar{width:34px;height:34px;display:grid;place-items:center;flex:none;border-radius:50%;background:var(--brand);color:#fff;font-size:12px;font-weight:800}
.bubble{max-width:82%;padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:16px 16px 16px 5px;box-shadow:0 8px 24px rgba(21,73,63,.07);font-size:14px;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere}
.user .bubble{background:var(--brand);border-color:var(--brand);border-radius:16px 16px 5px 16px;color:#fff;box-shadow:none}
.answer-image{display:block;max-width:100%;margin-top:11px;border-radius:12px;cursor:zoom-in}
.typing-dot{display:inline-block;width:6px;height:6px;margin:0 2px;border-radius:50%;background:var(--brand-soft);animation:pulse 1s infinite alternate}
.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}
@keyframes pulse{to{opacity:.25;transform:translateY(-2px)}}
.floating-qr{position:fixed;z-index:45;right:18px;bottom:112px;width:56px;height:56px;display:grid;place-items:center;padding:3px;border:1px solid rgba(255,255,255,.92);border-radius:20px;background:#fff;box-shadow:0 14px 34px rgba(11,65,55,.28),inset 0 1px 0 rgba(255,255,255,.25);cursor:grab;touch-action:none;user-select:none;-webkit-user-select:none;transition:box-shadow .18s,transform .18s;overflow:hidden}
.floating-qr:hover,.floating-qr:focus-visible{outline:0;box-shadow:0 17px 40px rgba(11,65,55,.34),0 0 0 4px color-mix(in srgb,var(--brand) 18%,transparent);transform:translateY(-2px)}
.floating-qr:active,.floating-qr.is-dragging{cursor:grabbing;transform:scale(.96);box-shadow:0 9px 24px rgba(11,65,55,.3)}
.floating-wechat-icon{display:block;width:100%;height:100%;border-radius:16px;object-fit:cover;pointer-events:none;-webkit-user-drag:none}
.composer{position:fixed;z-index:25;left:0;right:0;bottom:0;padding:10px 12px max(8px,env(safe-area-inset-bottom));background:rgba(255,255,255,.96);border-top:1px solid var(--line);backdrop-filter:blur(16px)}
.composer form{width:min(100%,756px);height:52px;margin:auto;display:flex;align-items:center;gap:10px;padding:5px 5px 5px 15px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 7px 24px rgba(21,73,63,.08)}
.composer-icon{color:var(--brand);font-size:17px}
.composer input{flex:1;min-width:0;height:40px;border:0;background:transparent;color:var(--ink);font-size:15px;outline:0}
.composer input::placeholder{color:#9aa7a4}
.composer button{width:42px;height:42px;display:grid;place-items:center;flex:none;border:0;border-radius:14px;background:var(--brand);color:#fff;font-size:17px;cursor:pointer}
.composer button:disabled{opacity:.5;cursor:wait}
.composer small{display:block;width:min(100%,756px);margin:5px auto 0;color:#8a9a96;font-size:9px;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.modal[hidden]{display:none}
.modal{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:22px}
.modal-mask{position:absolute;inset:0;background:rgba(9,39,34,.64);backdrop-filter:blur(4px)}
.modal-card{position:relative;z-index:1;width:min(320px,100%);min-height:330px;padding:48px 28px 24px;background:#fff;border-radius:24px;text-align:center;box-shadow:0 24px 70px rgba(6,38,32,.25)}
.modal-badge{position:absolute;left:24px;top:19px;color:var(--brand)}
.modal-card>img{width:100%;max-height:230px;object-fit:contain}
.modal-card p{margin:16px 0 0;font-size:14px;font-weight:700}
.modal-close{position:absolute;right:16px;top:14px;width:34px;height:34px;border:0;border-radius:50%;background:#eff5f3;color:#678079;cursor:pointer}
.qr-empty{height:210px;display:grid;place-items:center;border-radius:14px;background:#f2f7f5;color:#7c8e89;font-size:13px}
@media(max-width:380px){.topbar-inner{padding-inline:12px}.top-actions{gap:6px}.campus-hero{height:238px}.campus-hero-copy{right:39%;top:14px;left:14px}.campus-hero h1{font-size:26px}.campus-facts{grid-template-columns:repeat(2,1fr);gap:15px 0}.campus-facts>div:nth-child(2){border-right:0}.section-heading p{display:none}}
@media(min-width:700px){.page-shell{padding-top:24px}.campus-hero{height:310px}.campus-hero-copy{left:34px;right:52%;top:28px}.campus-hero h1{font-size:38px}.welcome-panel{padding:22px}.question-card{min-height:64px;padding-inline:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.typing-dot{animation:none}}