/* Public website: first product feedback, shared by home and content pages. */
.feedback-nav.page-nav{position:relative;inset:auto;transform:none;width:calc(100% - 64px);max-width:1440px;margin:24px auto 0;min-height:72px;border-radius:18px;background:#151b25;color:#edf1fa;box-shadow:none;padding:14px 24px;z-index:50;gap:24px}
.feedback-nav .page-brand{gap:9px;flex-shrink:0}.feedback-nav .page-brand-name{font-size:20px}.feedback-nav .page-huiheng-brand-name{font-size:15px}.feedback-nav .page-links{gap:25px}.feedback-nav .page-actions{gap:12px}.feedback-nav .page-login,.feedback-nav .page-cta{font-size:14px;font-weight:600;border-radius:8px;padding:9px 17px;line-height:1.2;background:transparent;color:#f4f7ff;border:1px solid #768299;text-decoration:none;white-space:nowrap}.feedback-nav .page-login{border-color:transparent}.feedback-nav .page-cta:hover{background:#edf2ff;color:#172236}.feedback-nav .page-international-link{background:transparent;border:0;border-radius:0;padding:0;color:#acb7c9;font-size:12px;white-space:nowrap}.feedback-nav .page-dropdown-menu{background:#1e2634;border:1px solid #364155;border-radius:12px}.feedback-nav .page-dropdown-menu a{color:#e8edf5}.feedback-nav a:focus-visible,.feedback-carousel button:focus-visible{outline:2px solid #8bb4ff;outline-offset:4px}
.feedback-home{background:#0c111b;color:#eef3ff;padding:44px 32px 58px;min-height:0}.feedback-entry{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(340px,1fr);max-width:1376px;margin:auto;gap:32px;align-items:stretch}.feedback-carousel{position:relative;min-width:0;min-height:560px;background:#172137;border:1px solid #2e3b54;border-radius:24px;overflow:hidden}.feedback-slide{position:absolute;inset:0}.feedback-slide[hidden]{display:none!important}.feedback-slide>img{width:100%;height:100%;object-fit:cover;opacity:.62}.feedback-slide:not([data-slide="0"])>img{object-fit:contain;padding:24px 24px 220px;background:#152134;opacity:.85}.feedback-slide:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 22%,rgba(10,17,31,.85) 69%,#0b1427 100%);pointer-events:none}.feedback-slide-copy{position:absolute;left:40px;right:40px;bottom:100px;z-index:1}.feedback-slide-copy>span,.feedback-kicker{font-size:11px;letter-spacing:.17em;color:#a7bded;font-weight:600}.feedback-slide h1{font-size:clamp(28px,3vw,44px);line-height:1.3;margin:16px 0;color:#fff;letter-spacing:-.04em}.feedback-slide p{font-size:16px;line-height:1.8;color:#d1dced;max-width:540px}.feedback-carousel-controls{position:absolute;bottom:26px;left:32px;right:32px;z-index:2;display:flex;align-items:center;gap:10px}.feedback-carousel-controls>div{display:flex;gap:5px;flex:1;justify-content:center}.feedback-carousel-controls button{font:inherit;color:#becbe2;background:transparent;border:1px solid transparent;border-radius:7px;padding:8px;cursor:pointer;min-width:32px}.feedback-carousel-controls button[aria-pressed="true"]{color:#fff;border-color:#86a9f1;background:#ffffff12}.feedback-carousel-controls button:hover{background:#ffffff20}
.feedback-login{padding:40px 34px;border:1px solid #dce3ef;border-radius:24px;background:#fff;color:#182338;align-self:center}.feedback-login h2{font-size:27px;margin:14px 0 8px;letter-spacing:-.03em;line-height:1.4}.feedback-login>p{color:#647086;font-size:14px;line-height:1.8}.feedback-login .feedback-kicker{color:#5278bc}.feedback-login .auth-page-form{display:grid;gap:20px;margin:30px 0 20px}.feedback-login .auth-page-field-full{display:grid;gap:9px}.feedback-login label{color:#29364b;font-size:13px}.feedback-login input:not([type="checkbox"]){width:100%;min-width:0;box-sizing:border-box;height:46px;border:1px solid #ced7e5;border-radius:9px;background:#f9fbff;color:#152238;padding:10px 13px;font:inherit;font-size:14px}.feedback-login input:focus{outline:2px solid #91b3f6;outline-offset:1px}.feedback-login .auth-page-options{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px}.feedback-login .auth-page-options label{display:flex;align-items:center;gap:6px}.feedback-login .auth-page-primary,.feedback-primary{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;height:46px;background:#315fe7;color:#fff;border:0;border-radius:9px;font-size:15px;font-weight:600;cursor:pointer}.feedback-login .auth-page-primary:disabled{opacity:.6;cursor:wait}.feedback-login a{color:#315fe7;text-decoration:none}.feedback-login .feedback-login-legal{font-size:11px;margin-top:22px}.feedback-login .auth-page-feedback{font-size:13px;color:#b32339}.feedback-login .auth-page-mfa{display:grid;gap:10px}.feedback-login .auth-page-secondary{padding:10px;border:1px solid #bac9e1;border-radius:8px;color:#234bae;background:#f2f6ff}.feedback-login .auth-page-field-head{display:flex;gap:10px;justify-content:space-between}.feedback-login .auth-page-link-button{background:transparent;border:0;color:#315fe7;font-size:12px}.feedback-register{border-top:1px solid #edf0f5;padding-top:18px}
.feedback-footer{display:block!important;background:#111722!important;color:#aab6ca;padding:40px max(32px,calc((100vw - 1376px)/2)) 24px!important;margin:0!important;max-width:none!important;border-top:1px solid #293244;font-size:13px}.feedback-footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;align-items:start}.feedback-company{display:flex;align-items:center;gap:12px;color:#edf2fc!important;font-size:18px;text-decoration:none}.feedback-company>img{width:44px;height:44px;object-fit:contain}.feedback-company small{display:block;font-size:11px;color:#9caac0;margin-top:7px}.feedback-footer nav{display:flex;flex-wrap:wrap;gap:12px 22px;align-items:start}.feedback-footer nav a{color:#bac7dc;text-decoration:none;white-space:nowrap}.feedback-footer a:hover{color:#fff;text-decoration:underline}.feedback-wechat{display:flex;align-items:center;gap:12px}.feedback-wechat small{display:block;font-size:11px;color:#8b9ab2;margin-top:5px}.feedback-footer-bottom{border-top:1px solid #2b3445;margin-top:28px;padding-top:22px;text-align:center;font-size:11px;color:#8f9bb0;line-height:1.8}.feedback-footer-bottom>div{display:flex;justify-content:center;flex-wrap:wrap;gap:8px 22px}.feedback-footer-bottom p{margin:0 0 9px}.feedback-footer-bottom a{color:inherit;text-decoration:none}
.feedback-content{max-width:1220px;margin:0 auto;padding:70px 32px 80px;color:#e7edf9}.feedback-content>h1{font-size:clamp(30px,4vw,48px);line-height:1.3;letter-spacing:-.04em;margin:14px 0 20px}.feedback-lead{color:#aebbd1;font-size:17px;line-height:1.9;max-width:820px}.feedback-media-empty{margin:44px 0;padding:70px 30px;border:1px dashed #53627b;border-radius:20px;text-align:center;background:#162031;min-height:260px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:14px}.feedback-media-empty>span{font-size:12px;color:#8faade;letter-spacing:.1em}.feedback-media-empty h2{font-size:28px;margin:0}.feedback-media-empty p{color:#aab8d0;line-height:1.7;margin:0}.feedback-media-empty a{color:#a9c5ff}.feedback-feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:40px}.feedback-feature-grid article{border:1px solid #303d53;border-radius:18px;overflow:hidden;background:#151e2d}.feedback-feature-grid img{width:100%;height:240px;object-fit:contain;background:#1c293e}.feedback-feature-grid article:first-child img{object-fit:cover}.feedback-feature-grid article>div{padding:26px}.feedback-feature-grid span,.feedback-case-grid article>span{font-size:12px;color:#8eafe8}.feedback-feature-grid h2{font-size:23px;margin:12px 0}.feedback-feature-grid p{color:#b2bfd4;line-height:1.8}.feedback-case-grid{display:grid;gap:28px;margin-top:36px}.feedback-case-grid article{padding:32px;background:#172131;border:1px solid #354058;border-radius:20px;scroll-margin-top:30px}.feedback-case-grid h2{font-size:26px;margin:16px 0}.feedback-case-grid p,.feedback-case-grid dd{color:#aebbd0;line-height:1.8}.feedback-case-grid dl{display:flex;gap:44px;flex-wrap:wrap}.feedback-case-grid dt{font-size:13px}.feedback-case-grid dd{margin:8px 0 0;font-size:13px}.feedback-comparison{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:26px}.feedback-comparison span{display:grid;place-items:center;min-height:140px;border:1px dashed #516078;border-radius:10px;color:#91a0b8;font-size:13px}.feedback-steps{line-height:2.5;padding-left:24px;color:#b7c5da}.feedback-honor{display:inline-block;padding:10px 16px;margin:12px 0;color:#e8efff;background:#1b294ba8;border:1px solid #9aafdc;border-radius:10px;text-decoration:none}.feedback-material-note{color:#9cabc3;line-height:1.7}.feedback-content [id]{scroll-margin-top:30px}
@media(max-width:1150px){.feedback-nav.page-nav{width:calc(100% - 32px);padding:14px 18px;gap:16px}.feedback-nav .page-huiheng-brand-name,.feedback-nav .page-brand-divider,.feedback-nav .page-huiheng-brand-logo{display:none}.feedback-nav .page-links{gap:15px}.feedback-nav .page-brand-name{font-size:17px}.feedback-nav .page-actions{gap:5px}.feedback-nav .page-login,.feedback-nav .page-cta{padding:8px 11px}.feedback-entry{gap:20px;grid-template-columns:minmax(0,1.2fr) minmax(325px,1fr)}.feedback-login{padding:30px 24px}.feedback-slide-copy{left:28px;right:28px}.feedback-footer-top{grid-template-columns:1fr 1fr}}
@media(max-width:820px){.feedback-nav.page-nav{margin-top:12px;min-height:60px}.feedback-nav .page-actions{margin-left:auto}.feedback-nav .page-international-link{display:none}.feedback-nav .page-links{display:none}.menu-open .feedback-nav .page-links{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;background:#172131;border:1px solid #38465f;border-radius:14px;padding:20px;gap:20px}.feedback-nav .page-dropdown-menu{position:static;transform:none;margin-top:10px}.feedback-home{padding:24px 16px 32px}.feedback-entry{grid-template-columns:1fr}.feedback-carousel{min-height:480px}.feedback-login{width:100%;box-sizing:border-box}.feedback-slide h1{font-size:32px}.feedback-footer{padding:28px 20px 20px!important}.feedback-footer-top{gap:26px}.feedback-content{padding:40px 20px}.feedback-feature-grid{grid-template-columns:1fr}}
@media(max-width:440px){.feedback-nav .page-brand-name{font-size:15px}.feedback-nav .page-brand-logo{width:26px;height:26px}.feedback-nav .page-actions{gap:1px}.feedback-nav .page-login,.feedback-nav .page-cta{padding:8px 10px;font-size:12px}.feedback-nav.page-nav{gap:10px;padding:12px}.feedback-carousel-controls{left:12px;right:12px;gap:1px}.feedback-carousel-controls button{min-width:28px;padding:7px 5px;font-size:12px}.feedback-slide-copy{bottom:86px;left:22px;right:22px}.feedback-slide h1{font-size:29px}.feedback-slide p{font-size:14px}.feedback-footer-top{grid-template-columns:1fr}.feedback-footer nav{max-width:100%}.feedback-comparison{grid-template-columns:1fr}.feedback-case-grid article{padding:24px}}
@media(prefers-reduced-motion:reduce){.feedback-carousel *{transition:none!important;animation:none!important}}
.feedback-media-empty video{width:100%;max-height:660px;border-radius:10px}.feedback-media-empty iframe{width:100%;height:650px;border:0;background:#fff}.feedback-wechat.has-qr{flex-direction:column;align-items:flex-start}.feedback-wechat.has-qr img{width:100px;height:100px;object-fit:contain;background:#fff;border-radius:6px;padding:6px}.feedback-comparison img{width:100%;height:220px;object-fit:contain;background:#111b2c;border-radius:10px}
.tsinghua-static-home{background:#0c111b;padding-top:1px}.feedback-nav .page-links>a,.feedback-nav .page-dropdown-toggle{color:#d4def0}.feedback-nav .page-links a:hover{color:#fff}.feedback-login a.feedback-primary{color:#fff}.feedback-nav .page-dropdown-toggle>span{border-color:#aebcce}
.feedback-nav .menu-toggle span{background:#d4def0}
@media(max-width:820px){.feedback-nav .page-actions{display:flex;position:static;flex-direction:row;width:auto;padding:0;background:transparent;border:0}.feedback-nav .page-actions .page-international-link{display:none}.feedback-login .auth-page-options{flex-direction:row;align-items:center;justify-content:space-between}}
.feedback-nav.page-nav{display:flex;height:auto;flex-wrap:nowrap}.feedback-nav .page-links{flex:1;justify-content:center}.feedback-nav .page-actions{flex-shrink:0}
@media(max-width:820px){body.menu-open .feedback-nav.page-nav{display:flex;overflow:visible;background:#151b25;color:#edf1fa;max-height:none}.feedback-nav .menu-toggle{display:block;position:relative;inset:auto;transform:none;margin:0;width:32px;height:32px;min-width:32px;flex-shrink:0;grid-area:auto}.feedback-nav .page-brand{min-width:0}.feedback-nav .page-actions{grid-area:auto}body.menu-open .feedback-nav .page-links{max-height:70dvh;overflow-y:auto;top:calc(100% + 8px);justify-content:flex-start}body.menu-open .feedback-nav .menu-toggle span{background:#d4def0}body.menu-open .feedback-nav .page-actions a{color:#f4f7ff}}
body:has(>.feedback-content),body:has(>.feedback-home){background:#0c111b;color:#e7edf9}
.feedback-content a{color:#b1caff}.feedback-content a:hover{color:#fff}
.feedback-nav .page-links>.feedback-international-mobile{display:none}
@media(max-width:820px){body.menu-open .feedback-nav .page-links>.feedback-international-mobile{display:block;font-size:12px;color:#aebcd5}}
@media(max-width:820px){body.menu-open .feedback-nav.page-nav .page-links{display:flex;position:absolute;width:auto;left:0;right:0;top:calc(100% + 8px);padding:20px;background:#172131;border:1px solid #38465f;border-radius:14px}body.menu-open .feedback-nav.page-nav .page-actions{width:auto;margin-left:auto;padding:0;gap:1px;border:0;background:transparent}body.menu-open .feedback-nav.page-nav .page-actions a{flex:0 0 auto;min-height:0;padding:8px 10px}body.menu-open .feedback-nav.page-nav .page-brand,body.menu-open .feedback-nav.page-nav .page-links>a,body.menu-open .feedback-nav.page-nav .page-dropdown-toggle{color:#d4def0}body.menu-open .feedback-nav.page-nav .page-dropdown-menu{background:#1e2634}body.menu-open .feedback-nav.page-nav .page-dropdown-menu a{color:#e8edf5}}
@media(max-width:820px){body.menu-open .feedback-nav.page-nav .page-actions .page-international-link{display:none}body.menu-open .feedback-nav.page-nav .menu-toggle span{background:#d4def0;top:16px}}
/* Immersive campaign background with a foreground sign-in panel. */
.feedback-home-immersive{position:relative;padding:0;background:#070e18}
.feedback-home-immersive .feedback-entry{display:block;position:relative;max-width:none;min-height:900px;padding:282px 24px 110px;isolation:isolate}
.feedback-home-immersive .feedback-carousel{position:absolute;inset:0;min-height:0;border:0;border-radius:0;z-index:-1;background:#080f1c}
.feedback-home-immersive .feedback-slide>img,.feedback-home-immersive .feedback-slide:not([data-slide="0"])>img{width:100%;height:100%;object-fit:cover;padding:0;opacity:.5;background:#080f1c;filter:saturate(.65);object-position:center}
.feedback-home-immersive .feedback-slide:after{background:linear-gradient(180deg,rgba(5,12,23,.32),rgba(5,12,23,.35) 40%,rgba(5,12,23,.8)),linear-gradient(90deg,rgba(5,12,23,.25),transparent 50%,rgba(5,12,23,.25))}
.feedback-home-immersive .feedback-slide-copy{left:24px;right:24px;top:64px;bottom:auto;text-align:center;margin:auto;max-width:950px}
.feedback-home-immersive .feedback-slide-copy>span{display:inline-block;padding:8px 18px;border:1px solid #b2a0d34d;border-radius:30px;background:#31264d80;color:#ede3ff;letter-spacing:.15em;font-size:12px;backdrop-filter:blur(12px)}
.feedback-home-immersive .feedback-slide h1{font-size:clamp(28px,3.5vw,48px);letter-spacing:.015em;margin:22px 0 14px;font-weight:650}
.feedback-home-immersive .feedback-slide p{max-width:760px;margin:0 auto;color:#d1d8e4;font-size:15px}
.feedback-home-immersive .feedback-login{position:relative;max-width:400px;margin:0 auto;padding:30px 34px;border:1px solid #ffffff30;border-radius:22px;background:rgba(246,249,255,.94);box-shadow:0 24px 90px #0005;backdrop-filter:blur(24px);box-sizing:border-box}
.feedback-home-immersive .feedback-login h2{font-size:25px;margin:12px 0 10px}.feedback-home-immersive .feedback-login>p{font-size:12px;margin:8px 0}.feedback-home-immersive .feedback-login .auth-page-form{gap:17px;margin:24px 0 18px}.feedback-home-immersive .feedback-login .feedback-register{padding-top:17px;margin-top:18px}.feedback-home-immersive .feedback-login .feedback-login-legal{font-size:10px;margin-top:18px}
.feedback-home-immersive .feedback-carousel-controls{bottom:28px;left:50%;right:auto;width:min(380px,90%);transform:translateX(-50%)}
.feedback-footer.feedback-footer-compact{padding:25px 24px!important;background:#f3f7fb!important;border-top:1px solid #e4eaf1;color:#8592a5;font-size:12px;line-height:1.9}
.feedback-footer-compact nav,.feedback-footer-records{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 0}
.feedback-footer-compact nav a,.feedback-footer-records>*{padding:0 11px;border-right:1px solid #d9e1eb;color:#7d8b9e;text-decoration:none}.feedback-footer-compact nav span{padding-left:11px}.feedback-footer-records{margin-top:10px;font-size:11px}.feedback-footer-records>:last-child{border-right:0}.feedback-footer-compact a:hover{color:#315fe7;text-decoration:underline}
@media(max-width:820px){.feedback-home-immersive .feedback-entry{min-height:870px;padding:252px 20px 100px}.feedback-home-immersive .feedback-slide-copy{top:44px;left:20px;right:20px}.feedback-home-immersive .feedback-slide h1{font-size:30px}.feedback-home-immersive .feedback-slide p{font-size:13px;max-width:450px}.feedback-home-immersive .feedback-login{padding:28px;max-width:380px}.feedback-footer.feedback-footer-compact{padding:22px 16px!important}.feedback-footer-compact nav span{flex-basis:100%;text-align:center;margin-top:5px}.feedback-footer-records{row-gap:6px}}
@media(max-width:440px){.feedback-home-immersive .feedback-slide h1{font-size:27px}.feedback-home-immersive .feedback-slide-copy>span{font-size:10px}.feedback-home-immersive .feedback-login{padding:26px}.feedback-home-immersive .feedback-entry{padding-top:252px}.feedback-footer-compact nav a,.feedback-footer-records>*{padding:0 8px}}
/* Minimal foreground login: one outlined row, no card. */
.feedback-home-immersive .feedback-entry{min-height:720px;padding:330px 24px 130px}
.feedback-home-immersive .feedback-login{width:100%;max-width:720px;padding:0;margin:0 auto;background:none;border:0;border-radius:0;box-shadow:none;backdrop-filter:none;color:#c6cedd}
.feedback-home-immersive .feedback-login>.feedback-kicker,.feedback-home-immersive .feedback-login>h2,.feedback-home-immersive .feedback-login>h2+p{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.feedback-home-immersive .feedback-login .auth-page-form{position:relative;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr) 94px;column-gap:0;row-gap:16px;margin:0;padding:6px 6px 0;align-items:center}
.feedback-home-immersive .feedback-login .auth-page-form:before{content:"";position:absolute;top:0;left:0;right:0;height:58px;border:1px solid #c3d0e34d;border-radius:32px;background:#07101b88;backdrop-filter:blur(12px);z-index:-1;box-sizing:border-box}
.feedback-home-immersive .feedback-login .auth-page-field-full{min-width:0;gap:0}.feedback-home-immersive .feedback-login .auth-page-field-full>label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.feedback-home-immersive .feedback-login .auth-page-field-full:nth-child(2){border-left:1px solid #bac8df30}
.feedback-home-immersive .feedback-login input:not([type="checkbox"]){height:46px;border:0;border-radius:0;background:transparent;color:#f1f5fc;font-size:13px;padding:10px 20px;box-shadow:none}
.feedback-home-immersive .feedback-login input::placeholder{color:#68686b}.feedback-home-immersive .feedback-login input:focus{outline:0}.feedback-home-immersive .feedback-login .auth-page-field-full:focus-within{border-radius:24px;outline:1px solid #b2c9ed99;outline-offset:-2px}
.feedback-home-immersive .feedback-login .auth-page-primary{grid-column:3;grid-row:1;height:44px;border-radius:24px;background:#e1e8f2;color:#1b2a40;font-size:13px;box-shadow:none}.feedback-home-immersive .feedback-login .auth-page-primary:hover{background:#454548}
.feedback-home-immersive .feedback-login .auth-page-options{grid-column:1/-1;grid-row:2;padding:0 14px;font-size:11px}.feedback-home-immersive .feedback-login .auth-page-options label{font-size:11px;color:#aebacf}.feedback-home-immersive .feedback-login a,.feedback-home-immersive .feedback-login .auth-page-link-button{color:#b9c9e1;font-size:11px}
.feedback-home-immersive .feedback-login .feedback-register{border:0;text-align:center;margin:22px 0 0;padding:0;color:#aebacf;font-size:11px}.feedback-home-immersive .feedback-login .feedback-login-legal{text-align:center;margin-top:12px;color:#8797af;font-size:10px}
.feedback-home-immersive .feedback-login .auth-page-feedback{grid-column:1/-1;color:#ffb9bc;padding:0 14px;font-size:12px}
.feedback-home-immersive .feedback-login .auth-page-mfa{grid-column:1/-1;padding:16px;border:1px solid #c3d0e34d;border-radius:14px;background:#101b2bdd;gap:12px}.feedback-home-immersive .feedback-login .auth-page-mfa input{border:1px solid #c3d0e34d;border-radius:8px}.feedback-home-immersive .feedback-login .auth-page-mfa:focus-within{outline:0}.feedback-home-immersive .feedback-login .auth-page-mfa label{color:#dce5f3}
@media(max-width:820px){.feedback-home-immersive .feedback-entry{min-height:650px;padding:292px 20px 110px}.feedback-home-immersive .feedback-login{max-width:650px;padding:0}.feedback-home-immersive .feedback-login .auth-page-form{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) 66px}.feedback-home-immersive .feedback-login input:not([type="checkbox"]){font-size:12px;padding:10px}.feedback-home-immersive .feedback-login .auth-page-primary{font-size:12px}}
.feedback-home-immersive .feedback-login .auth-page-field-full:first-child{grid-column:1;grid-row:1}.feedback-home-immersive .feedback-login .auth-page-field-full:nth-child(2){grid-column:2;grid-row:1}

/* Finish the compact sign-in treatment, including browser autofill. */
.feedback-home-immersive .feedback-login{max-width:660px;--signin-surface:rgba(245,245,243,.9)}
.feedback-home-immersive .feedback-login .auth-page-form{padding:4px 4px 0;grid-template-columns:minmax(0,1.12fr) minmax(0,1fr) 86px;row-gap:15px}
.feedback-home-immersive .feedback-login .auth-page-form:before{height:48px;border:0;background:var(--signin-surface);box-shadow:0 4px 18px rgba(0,0,0,.12)}
.feedback-home-immersive .feedback-login .auth-page-form:focus-within:before{border:0;box-shadow:0 4px 18px rgba(0,0,0,.12)}
.feedback-home-immersive .feedback-login .auth-page-field-full:nth-child(-n+2){border:0;border-radius:24px;overflow:hidden;outline:none;background:var(--signin-surface)}
.feedback-home-immersive .feedback-login .auth-page-field-full:nth-child(2){border-radius:0 24px 24px 0;position:relative}
.feedback-home-immersive .feedback-login .auth-page-field-full:nth-child(2):before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:1px;background:#0000001a;z-index:1;pointer-events:none}
.feedback-home-immersive .feedback-login input:not([type="checkbox"]){height:40px;background:transparent;color:#29292c;caret-color:#29292c;padding-left:20px;font-size:13px;font-weight:400}
.feedback-home-immersive .feedback-login input:is(:-webkit-autofill,:autofill){-webkit-box-shadow:0 0 0 1000px var(--signin-surface) inset!important;box-shadow:0 0 0 1000px var(--signin-surface) inset!important;-webkit-text-fill-color:#29292c!important;caret-color:#29292c;color:#29292c!important;background-color:var(--signin-surface)!important}
.feedback-home-immersive .feedback-login .auth-page-field-full:nth-child(2) button{color:#68686b!important;font-size:11px!important;right:14px!important}
.feedback-home-immersive .feedback-login .auth-page-primary{height:36px;margin:2px 0;background:#303033;color:#f5f5f5;font-weight:600;letter-spacing:.08em;border:0;box-shadow:none}
.feedback-home-immersive .feedback-login .auth-page-options{padding:0 16px}.feedback-home-immersive .feedback-login .auth-page-options label{gap:7px;color:#a4b2c8;font-size:11px}.feedback-home-immersive .feedback-login input[type="checkbox"]{width:12px;height:12px;accent-color:#91aaca}
.feedback-home-immersive .feedback-login .feedback-register{margin-top:17px}.feedback-home-immersive .feedback-login .feedback-login-legal{opacity:.8}
.feedback-home-immersive .feedback-slide:not([data-slide="0"])>img{opacity:.22;filter:saturate(.35) blur(3px);transform:scale(1.015)}
.feedback-partners{display:flex;align-items:center;gap:50px;max-width:1240px;margin:0 auto;padding:36px 40px 42px;border-top:1px solid #b3c3df1a;background:#070e18}
.feedback-partners-label{flex-shrink:0;color:#bbc4d2;text-decoration:none;font-size:13px;line-height:1.8}.feedback-partners-label span{display:block;font-size:9px;letter-spacing:.18em;color:#626f84}
.feedback-partners-logos{display:flex;align-items:center;justify-content:space-between;gap:46px;flex:1;min-width:0}.feedback-partners-logos img{display:block;max-width:32%;width:auto;height:42px;object-fit:contain;filter:grayscale(1) brightness(0) invert(1);opacity:.65;transition:opacity .2s}.feedback-partners-logos img:hover{opacity:.95}
@media(max-width:820px){.feedback-home-immersive .feedback-login .auth-page-form{grid-template-columns:minmax(0,1.08fr) minmax(0,1fr) 64px}.feedback-home-immersive .feedback-login input:not([type="checkbox"]){padding-left:13px;font-size:12px}.feedback-home-immersive .feedback-login .auth-page-field-full:nth-child(2) button{right:8px!important}.feedback-partners{padding:26px 24px;gap:24px;flex-direction:column;align-items:flex-start}.feedback-partners-label span{display:inline;margin-left:12px}.feedback-partners-logos{width:100%;gap:22px}.feedback-partners-logos img{height:28px;max-width:31%}}
@media(max-width:380px){.feedback-home-immersive .feedback-entry{padding-left:12px;padding-right:12px}.feedback-home-immersive .feedback-login input:not([type="checkbox"]){font-size:11px;padding-left:10px}.feedback-partners-logos{gap:14px}}
.feedback-home-immersive .feedback-login input:is(:-webkit-autofill,:autofill){transition:none!important}
.feedback-home-immersive .feedback-login .auth-page-field-full:nth-child(-n+2) input{border:0!important;outline:0!important;border-radius:0!important}
@media(max-width:600px){.feedback-partners-logos{flex-wrap:wrap;justify-content:flex-start;gap:24px 28px}.feedback-partners-logos img{height:30px;max-width:calc(50% - 14px)}.feedback-partners-logos img:first-child{width:250px;max-width:100%}}

/* One continuous input surface; only the outside silhouette is rounded. */
.feedback-home-immersive .feedback-login .auth-page-field-full:nth-child(-n+2){border-radius:0!important;overflow:visible;background:transparent;box-shadow:none!important;outline:0!important}
.feedback-home-immersive .feedback-login .auth-page-field-full:first-child input{clip-path:inset(0 round 24px 0 0 24px)}
.feedback-home-immersive .feedback-login .auth-page-field-full:nth-child(2) input{clip-path:none}
.feedback-partners-window{min-width:0;flex:1;overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 3%,#000 97%,transparent)}
.feedback-partners-track{display:flex;width:max-content;animation:feedback-partner-scroll 28s linear infinite}
.feedback-partners-track .feedback-partners-logos{display:flex;flex-wrap:nowrap;flex:none;justify-content:flex-start;width:auto;gap:64px;padding-right:64px}
.feedback-partners-track .feedback-partners-logos img,.feedback-partners-track .feedback-partners-logos img:first-child{width:280px;max-width:none;height:44px;flex:none;object-fit:contain}
.feedback-partners-window:hover .feedback-partners-track,.feedback-partners-window:focus-within .feedback-partners-track{animation-play-state:paused}
@keyframes feedback-partner-scroll{to{transform:translateX(-50%)}}
@media(max-width:820px){.feedback-partners-window{width:100%;flex:auto}.feedback-partners-track .feedback-partners-logos{gap:36px;padding-right:36px}.feedback-partners-track .feedback-partners-logos img,.feedback-partners-track .feedback-partners-logos img:first-child{width:230px;height:36px}}
@media(prefers-reduced-motion:reduce){.feedback-partners-track{animation:none}.feedback-partners-window{overflow-x:auto}}

.feedback-home-immersive .feedback-login .auth-page-field-full:first-child input{clip-path:none}
.feedback-home-immersive .feedback-login .auth-page-field-full:first-child{padding-left:20px}.feedback-home-immersive .feedback-login .auth-page-field-full:first-child input{padding-left:0}
@media(max-width:820px){.feedback-home-immersive .feedback-login .auth-page-field-full:first-child{padding-left:16px}}

/* Each scene keeps its own timeline; only the visible scene runs. */
.feedback-slide[data-flash] { opacity:0; visibility:visible; pointer-events:none; transform:none; transition:none; }
.feedback-slide[data-flash].is-active { opacity:1; visibility:visible; }
.feedback-slide[data-flash] .feedback-slide-frame { position:absolute; inset:0; width:100%; height:100%; border:0; background:#000; pointer-events:none; opacity:0; transition:opacity 350ms ease; }
.feedback-slide[data-scene-ready="true"] .feedback-slide-frame { opacity:1; }
.feedback-carousel[data-intro-handoff="true"] .feedback-slide-frame { transition:none; }
.feedback-carousel:not([data-initial-scene-ready="true"]) .feedback-carousel-controls { opacity:0; pointer-events:none; }
.feedback-login .auth-page-form[data-auth-hydrating="true"] .auth-page-primary:disabled { opacity:1; }
.feedback-slide[data-flash] .feedback-slide-copy { display:none; }
.feedback-home-immersive .feedback-slide[data-flash]::after { background:none; }
.feedback-particle-transition { position:absolute; inset:0; z-index:3; width:100%; height:100%; pointer-events:none; opacity:0; transition:opacity 100ms ease; }
.feedback-carousel[data-transitioning="true"] .feedback-particle-transition { opacity:1; transition:none; }
.feedback-home-immersive .feedback-carousel-controls { z-index:5; }
.feedback-entry:has(.feedback-carousel:not([data-initial-scene-ready="true"])) .feedback-login { visibility:hidden; }
.feedback-slide[data-slide="0"] .feedback-slide-frame { transition:none; }
@media(prefers-reduced-motion:reduce){.feedback-particle-transition{display:none}}
/* Compact scene indicators and a separate playback control. */
.feedback-home-immersive .feedback-carousel-controls{width:max-content;max-width:calc(100% - 24px);gap:12px;align-items:center}
.feedback-home-immersive .feedback-carousel-controls>[data-slide-prev],
.feedback-home-immersive .feedback-carousel-controls>[data-slide-next]{display:none}
.feedback-home-immersive .feedback-carousel-controls>div{flex:none;align-items:center;gap:2px;height:48px;padding:0 16px;border-radius:999px;background:rgba(239,239,242,.94)}
.feedback-home-immersive .feedback-carousel-controls [data-slide-to]{display:grid;place-items:center;width:26px;min-width:26px;height:40px;padding:0;border:0;border-radius:20px;background:transparent;color:#707073;font-size:0;transition:width .3s ease}
.feedback-home-immersive .feedback-carousel-controls [data-slide-to]::before{content:"";width:7px;height:7px;border-radius:999px;background:currentColor;transition:width .3s ease}
.feedback-home-immersive .feedback-carousel-controls [data-slide-to][aria-pressed="true"]{width:52px;background:transparent;color:#707073;border:0}
.feedback-home-immersive .feedback-carousel-controls [data-slide-to][aria-pressed="true"]::before{width:42px}
.feedback-home-immersive .feedback-carousel-controls [data-slide-to]:hover{color:#29292c;background:transparent}
.feedback-home-immersive .feedback-carousel-controls [data-slide-pause]{display:grid;place-items:center;flex:none;width:48px;min-width:48px;height:48px;padding:0;border:0;border-radius:50%;background:rgba(239,239,242,.94);color:#202023;font-size:0}
.feedback-home-immersive .feedback-carousel-controls [data-slide-pause]::before{content:"";box-sizing:border-box;width:9px;height:12px;border-left:3px solid currentColor;border-right:3px solid currentColor}
.feedback-home-immersive .feedback-carousel-controls [data-slide-pause][aria-pressed="true"]::before{width:0;height:0;border-top:6px solid transparent;border-bottom:6px solid transparent;border-left:10px solid currentColor;border-right:0;margin-left:3px}
.feedback-home-immersive .feedback-carousel-controls [data-slide-pause]:hover{background:#fff}
.feedback-home-immersive .feedback-carousel-controls button:focus-visible{outline:2px solid #fff;outline-offset:3px;box-shadow:0 0 0 2px #444}
@media(max-width:380px){.feedback-home-immersive .feedback-carousel-controls>div{padding:0 10px;gap:0}.feedback-home-immersive .feedback-carousel-controls{gap:8px}}
/* Minimal white-dot navigation without enclosing surfaces. */
.feedback-home-immersive .feedback-carousel-controls>div{background:transparent;padding:0 4px;gap:2px}
.feedback-home-immersive .feedback-carousel-controls [data-slide-to],
.feedback-home-immersive .feedback-carousel-controls [data-slide-to][aria-pressed="true"]{width:26px;color:rgba(255,255,255,.42);background:transparent;border:0}
.feedback-home-immersive .feedback-carousel-controls [data-slide-to]::before,
.feedback-home-immersive .feedback-carousel-controls [data-slide-to][aria-pressed="true"]::before{width:6px;height:6px}
.feedback-home-immersive .feedback-carousel-controls [data-slide-to][aria-pressed="true"],
.feedback-home-immersive .feedback-carousel-controls [data-slide-to]:hover{color:#fff}
.feedback-home-immersive .feedback-carousel-controls [data-slide-pause],
.feedback-home-immersive .feedback-carousel-controls [data-slide-pause]:hover{background:transparent;color:#fff;border:0;box-shadow:none}

/* The compact sign-in row must not inherit the full-page form's 47px minimum. */
.feedback-home-immersive .feedback-login .auth-page-field-full:nth-child(-n+2) input{min-height:0;height:40px;padding-top:0;padding-bottom:0}
.feedback-home-immersive .feedback-login .auth-page-primary{min-height:0;height:36px}

.feedback-nav .home-language-select{color:#e5e5eb;background:#141416;border:1px solid #ffffff40;border-radius:999px;padding:8px 12px;font-size:12px;max-width:118px;cursor:pointer}
.feedback-nav .home-language-select option{color:#eee;background:#141416}
html[lang="en"] .feedback-home-immersive .feedback-login .auth-page-primary{letter-spacing:0;padding:0 6px}
html[lang="en"] .feedback-home-immersive .feedback-login .feedback-login-legal a{margin:0 3px}
@media(max-width:820px){.feedback-nav #home-language-slot{display:flex}.feedback-nav .home-language-select{max-width:100px;padding:7px 5px;font-size:11px}.tsinghua-static-home .feedback-nav .page-brand-name{font-size:16px}.tsinghua-static-home .feedback-nav .page-actions{gap:2px}}
@media(max-width:440px){.tsinghua-static-home .feedback-nav .page-login{display:none}}