*{box-sizing:border-box}
:root{--action:#2767d7;--composer-height:110px}
html{scroll-behavior:smooth;background:#eaf1ef}
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;text-rendering:optimizeLegibility}
button,input{font:inherit}
button{-webkit-tap-highlight-color:transparent}
.topbar{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s;backdrop-filter:blur(18px)}
.topbar.is-scrolled{border-color:var(--line);box-shadow:0 7px 24px rgba(11,50,43,.08)}
.topbar-inner{width:min(100%,860px);height:72px;margin:auto;padding:9px 18px;display:flex;align-items:center;justify-content:space-between}
.top-identity{display:flex;align-items:center;gap:11px;min-width:0}
.identity-copy{min-width:0}
.identity-copy strong{display:block;font-size:18px;line-height:1.18;letter-spacing:.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.identity-copy small{display:flex;align-items:center;gap:7px;margin-top:5px;color:#647a75;font-size:11px;white-space:nowrap}
.identity-copy small i{width:7px;height:7px;border-radius:50%;background:#24c97a;box-shadow:0 0 0 4px rgba(36,201,122,.1)}
.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 color-mix(in srgb,var(--brand) 24%,transparent)}
.avatar img{width:100%;height:100%;object-fit:cover;border-radius:inherit}
.avatar span{font-size:20px}
.avatar-small{width:48px;height:48px}
.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;align-items:center;gap:7px}
.top-actions button{width:48px;min-height:52px;border:0;border-radius:10px;background:transparent;color:var(--brand);display:grid;place-items:center;align-content:center;gap:4px;padding:4px;cursor:pointer;transition:background-color .16s,transform .16s}
.top-actions button:hover,.top-actions button:focus-visible{outline:0;background:color-mix(in srgb,var(--brand) 8%,transparent)}
.top-actions button:active{transform:scale(.95)}
.top-actions button>i{font-size:19px}
.top-actions button span{font-size:10px;color:#526963;max-width:44px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.page-shell{width:min(100%,860px);margin:0 auto;padding:0 14px calc(var(--composer-height,110px) + 24px)}
.campus-hero{position:relative;height:270px;margin:0 -14px;overflow:hidden;background:#dcebe7;isolation:isolate}
.campus-hero .hero-image{position:absolute;inset:-8px 0 auto;width:100%;height:calc(100% + 16px);object-fit:cover;object-position:center;transform:translate3d(0,var(--hero-shift,0),0) scale(1.035);transition:transform .08s linear;will-change:transform}
.campus-hero::after{content:"";position:absolute;z-index:0;inset:0 39% 0 0;background:rgba(255,255,255,.9);border-right:1px solid rgba(255,255,255,.7)}
.campus-hero-copy{position:absolute;z-index:1;left:20px;top:21px;width:58%;color:#123a34}
.campus-label{display:inline-flex;align-items:center;gap:7px;padding-left:10px;border-left:4px solid var(--brand);color:var(--brand);font-size:11px;font-weight:750;letter-spacing:.03em}
.campus-label i{font-size:10px}
.campus-hero h1{margin:13px 0 7px;font-size:38px;line-height:1.05;letter-spacing:-.04em;font-weight:850}
.campus-hero h1 span{display:inline}
.hero-subtitle{margin:0;color:#294c46;font-size:13px;line-height:1.5;font-weight:650}
.hero-intro{display:grid;gap:7px;margin-top:16px;color:#31534d;font-size:10px;line-height:1.35}
.hero-intro span{display:flex;align-items:flex-start;gap:8px;min-width:0}
.hero-intro i{width:12px;flex:none;margin-top:1px;color:var(--brand);text-align:center}
.campus-compass{position:absolute;z-index:2;right:14px;top:78px;width:42px;min-height:112px;display:flex;flex-direction:column;align-items:center;padding:11px 5px;border:1px solid rgba(255,255,255,.9);border-radius:22px;background:rgba(255,255,255,.92);color:var(--brand);box-shadow:0 8px 22px rgba(17,65,56,.1);backdrop-filter:blur(10px)}
.campus-compass i{font-size:13px;transform:rotate(-35deg)}
.campus-compass strong{margin:4px 0 9px;font-size:12px}
.campus-compass span{font-size:10px;line-height:1.4;writing-mode:vertical-rl;letter-spacing:.14em;color:#284942}
.campus-facts{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:-1px -14px 0;padding:14px 5px;background:var(--brand);color:#fff}
.campus-fact{position:relative;min-width:0;padding:3px 7px;border:0;border-right:1px solid rgba(255,255,255,.32);border-radius:0;background:transparent;color:inherit;text-align:center;text-decoration:none;cursor:pointer;transition:background-color .16s,transform .16s}
.campus-fact:last-child{border-right:0}
.campus-fact:hover,.campus-fact:focus-visible{outline:0;background:rgba(255,255,255,.1);transform:translateY(-2px)}
.campus-fact:active{transform:scale(.97)}
.campus-fact>i{display:block;margin-bottom:8px;font-size:19px}
.campus-fact em{position:absolute;right:7px;top:0;font-style:normal;opacity:0;transform:translate(-3px,3px);transition:opacity .16s,transform .16s}
.campus-fact em i{font-size:8px}
.campus-fact:hover em,.campus-fact:focus-visible em{opacity:.72;transform:none}
.campus-facts strong,.campus-facts span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.campus-facts strong{font-size:10px;font-weight:750}
.campus-facts span{margin-top:4px;color:rgba(255,255,255,.68);font-size:9px}
.knowledge-strip{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:9px;margin:0 -14px;padding:10px 18px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--brand) 5%,var(--surface));color:#627773;font-size:10px;line-height:1.4}
.knowledge-strip i:first-child{color:var(--brand)}
.knowledge-strip i:last-child{font-size:9px;color:#98a8a4}
.question-section{margin-top:25px}
.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin:0 3px 13px}
.section-heading h2{margin:2px 0 0;font-size:25px;line-height:1.1;letter-spacing:-.04em}
.section-heading p{margin:0 0 2px;color:#7d8e89;font-size:10px;white-space:nowrap}
.section-heading p i{margin-left:4px;font-size:8px}
.section-kicker{color:var(--brand);font-size:8px;font-weight:800;letter-spacing:.18em}
.question-list{overflow:hidden;background:var(--surface);border:1px solid color-mix(in srgb,var(--line) 80%,transparent);border-radius:14px;box-shadow:0 12px 30px rgba(17,65,56,.055)}
.question-card{width:100%;min-height:54px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--ink);padding:7px 15px;display:grid;grid-template-columns:42px 1fr 14px;align-items:center;gap:5px;text-align:left;cursor:pointer;transition:background-color .16s,transform .16s}
.question-card:nth-child(even){background:color-mix(in srgb,var(--brand) 2.5%,var(--surface))}
.question-card:last-child{border-bottom:0}
.question-card:hover,.question-card:focus-visible{background:color-mix(in srgb,var(--brand) 6%,var(--surface));outline:0}
.question-card:active,.question-card.is-active{background:color-mix(in srgb,var(--brand) 10%,var(--surface));transform:translateX(2px)}
.question-number{color:var(--brand);font-size:17px;font-weight:850;font-variant-numeric:tabular-nums;letter-spacing:-.04em}
.question-copy{padding-left:10px;border-left:1px solid var(--line);font-size:13px;line-height:1.45}
.question-arrow{color:#94a49f;font-size:10px}
.question-empty{margin:0;padding:30px 18px;color:#71837e;font-size:12px;text-align:center}
.resource-panel{display:flex;align-items:center;gap:15px;margin-top:16px;padding:14px;background:var(--surface);border:1px solid var(--line);border-radius:14px}
.resource-panel img{width:72px;height:72px;object-fit:contain;padding:5px;border:1px solid var(--line);border-radius:9px}
.resource-panel span,.resource-panel strong,.resource-panel p{display:block;margin:0}
.resource-panel span{color:var(--brand);font-size:9px;font-weight:800;letter-spacing:.14em}
.resource-panel strong{margin:4px 0;font-size:14px}
.resource-panel p{color:#7c8e89;font-size:10px}
.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:10px}
.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:32px;height:32px;display:grid;place-items:center;flex:none;border-radius:10px;background:var(--brand);color:#fff;font-size:11px;font-weight:800}
.bubble{max-width:84%;padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:14px 14px 14px 4px;box-shadow:0 7px 20px rgba(21,73,63,.06);font-size:13px;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere}
.user .bubble{background:var(--brand);border-color:var(--brand);border-radius:14px 14px 4px 14px;color:#fff;box-shadow:none}
.answer-image{display:block;max-width:100%;margin-top:11px;border-radius:10px;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:16px;bottom:calc(var(--composer-height,110px) + 18px);width:54px;height:54px;display:grid;place-items:center;padding:3px;border:4px solid #fff;border-radius:50%;background:#fff;box-shadow:0 12px 30px rgba(11,65,55,.24);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 15px 36px rgba(11,65,55,.3),0 0 0 4px color-mix(in srgb,var(--brand) 16%,transparent);transform:translateY(-2px)}
.floating-qr:active,.floating-qr.is-dragging{cursor:grabbing;transform:scale(.96);box-shadow:0 8px 20px rgba(11,65,55,.26)}
.floating-wechat-icon{display:block;width:100%;height:100%;border-radius:50%;object-fit:cover;pointer-events:none;-webkit-user-drag:none}
.composer{position:fixed;z-index:25;left:0;right:0;bottom:0;padding:9px 12px max(8px,env(safe-area-inset-bottom));background:rgba(255,255,255,.97);border-top:1px solid var(--line);box-shadow:0 -10px 34px rgba(17,65,56,.07);backdrop-filter:blur(18px)}
.quick-question-strip{width:min(100%,836px);margin:0 auto 8px;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.quick-question-strip::-webkit-scrollbar{display:none}
.quick-question-track{display:flex;align-items:center;gap:8px;width:max-content;min-width:100%;padding:1px 0}
.quick-question{max-width:240px;min-height:34px;flex:none;padding:7px 13px;border:1px solid var(--line);border-radius:17px;background:var(--surface);color:#687976;font-size:11px;line-height:1.35;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer;transition:border-color .16s,background-color .16s,color .16s,transform .16s}
.quick-question:first-child{border-color:var(--brand);background:var(--brand);color:#fff;font-weight:700}
.quick-question:hover,.quick-question:focus-visible,.quick-question.is-active{outline:0;border-color:var(--brand);background:var(--brand);color:#fff}
.quick-question:active{transform:scale(.97)}
.composer form{width:min(100%,836px);height:54px;margin:auto;display:flex;align-items:center;gap:10px;padding:5px 5px 5px 15px;background:#fff;border:1px solid color-mix(in srgb,var(--line) 78%,#9baaa6);border-radius:15px;box-shadow:0 7px 22px rgba(21,73,63,.07);transition:border-color .16s,box-shadow .16s}
.composer form:focus-within{border-color:var(--brand);box-shadow:0 8px 25px rgba(21,73,63,.1),0 0 0 3px color-mix(in srgb,var(--brand) 10%,transparent)}
.composer-icon{color:var(--brand);font-size:18px}
.composer input{flex:1;min-width:0;height:40px;border:0;background:transparent;color:var(--ink);font-size:14px;outline:0}
.composer input::placeholder{color:#98a5a2}
.composer form button{width:44px;height:44px;display:grid;place-items:center;flex:none;border:0;border-radius:11px;background:var(--action);color:#fff;font-size:17px;cursor:pointer;box-shadow:0 6px 16px rgba(39,103,215,.22);transition:transform .16s,filter .16s}
.composer form button:hover,.composer form button:focus-visible{outline:0;filter:brightness(1.06)}
.composer form button:active{transform:scale(.94)}
.composer form button:disabled{opacity:.5;cursor:wait;box-shadow:none}
.composer small{display:block;width:min(100%,836px);margin:5px auto 0;color:#899995;font-size:8px;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,.68);backdrop-filter:blur(5px)}
.modal-card{position:relative;z-index:1;width:min(320px,100%);min-height:330px;padding:48px 28px 24px;background:#fff;border-radius:18px;text-align:center;box-shadow:0 24px 70px rgba(6,38,32,.28)}
.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:9px;background:#eff5f3;color:#678079;cursor:pointer}
.qr-empty{height:210px;display:grid;place-items:center;border-radius:11px;background:#f2f7f5;color:#7c8e89;font-size:13px}.qr-empty[hidden]{display:none}
.campus-hero,.campus-facts,.question-section{animation:enter .55s cubic-bezier(.2,.75,.25,1) both}
.campus-facts{animation-delay:.08s}.question-section{animation-delay:.14s}
@keyframes enter{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@media(max-width:380px){.topbar-inner{padding-inline:13px}.top-actions{gap:2px}.campus-hero{height:270px}.campus-hero::after{right:33%}.campus-hero-copy{left:16px;width:64%}.campus-hero h1{font-size:35px}.campus-compass{right:9px}.campus-facts{padding-inline:2px}.campus-facts>div{padding-inline:4px}.section-heading p{display:none}}
@media(min-width:700px){body{background:color-mix(in srgb,var(--page) 88%,#dfe9e6)}.page-shell{background:var(--page);box-shadow:0 0 0 1px color-mix(in srgb,var(--line) 75%,transparent)}.campus-hero{height:365px}.campus-hero-copy{left:34px;top:40px;width:48%}.campus-hero::after{right:47%}.campus-hero h1{font-size:50px}.hero-subtitle{font-size:15px}.hero-intro{font-size:12px}.campus-facts{padding-block:20px}.campus-facts strong{font-size:12px}.question-card{min-height:62px;padding-inline:21px}.question-copy{font-size:14px}.composer{padding-inline:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.typing-dot{animation:none}.campus-hero,.campus-facts,.question-section{animation:none}.campus-hero .hero-image{transform:none!important}}