:root{color-scheme:light dark;--bg:#eef4f2;--surface:rgba(255,255,255,.82);--surface-solid:#fff;--text:#152522;--muted:#60716d;--line:rgba(22,61,53,.13);--accent:#0f8a7e;--accent-dark:#086d64;--accent-soft:rgba(15,138,126,.1);--danger:#b4333a;--danger-soft:rgba(180,51,58,.1);--shadow:0 24px 70px rgba(23,58,50,.13);font:100%/1.5 ui-sans-serif,-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Microsoft YaHei",sans-serif;font-optical-sizing:auto}
*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;min-height:100dvh;overflow-x:hidden;overflow-y:auto;background:radial-gradient(circle at 12% 8%,rgba(15,138,126,.13),transparent 32rem),linear-gradient(145deg,#f7faf9 0%,var(--bg) 48%,#e8f0ee 100%);color:var(--text)}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}.auth-shell{width:min(1180px,100%);min-height:100vh;min-height:100dvh;margin:auto;padding:24px clamp(18px,4vw,52px) 48px}.auth-topbar{display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:12px;color:inherit;text-decoration:none}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:var(--accent);color:#fff;font-weight:850;box-shadow:0 9px 22px rgba(15,138,126,.22)}.brand>span:last-child{display:grid;line-height:1.2}.brand strong{font-size:17px;letter-spacing:-.01em}.brand small{margin-top:3px;color:var(--muted);font-size:11px;letter-spacing:.02em}.back-link{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.54);color:var(--text);font-size:13px;font-weight:700;text-decoration:none;backdrop-filter:blur(14px)}.auth-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(390px,510px);align-items:center;gap:clamp(42px,7vw,96px);min-height:calc(100vh - 114px);min-height:calc(100dvh - 114px);padding:54px 0}.auth-story{max-width:570px}.eyebrow{margin:0;color:var(--accent-dark);font-size:12px;font-weight:850;letter-spacing:.12em;text-transform:uppercase}.auth-story h1{max-width:620px;margin:14px 0 20px;font-size:clamp(36px,5vw,64px);line-height:1.06;letter-spacing:-.035em}.story-lead{max-width:540px;margin:0;color:var(--muted);font-size:clamp(16px,1.7vw,19px);line-height:1.75}.audience-notes{display:grid;gap:12px;margin-top:34px}.audience-notes article{display:grid;grid-template-columns:38px 1fr;gap:12px;align-items:start}.audience-notes article>span{display:grid;place-items:center;width:34px;height:34px;border:1px solid rgba(15,138,126,.24);border-radius:11px;background:var(--accent-soft);color:var(--accent-dark);font-size:11px;font-weight:850}.audience-notes strong{font-size:14px}.audience-notes p{margin:3px 0 0;color:var(--muted);font-size:13px}.privacy-note{display:flex;align-items:center;gap:9px;margin:30px 0 0;color:var(--muted);font-size:12px}.privacy-note span{color:var(--accent);font-weight:900}.auth-card{position:relative;padding:clamp(24px,4vw,38px);border:1px solid rgba(255,255,255,.72);border-radius:28px;background:var(--surface);box-shadow:var(--shadow);backdrop-filter:blur(30px) saturate(145%)}.existing-session{margin:-10px -10px 24px;padding:12px;border:1px solid rgba(15,138,126,.18);border-radius:16px;background:var(--accent-soft)}.existing-session>div{display:flex;align-items:center;gap:9px}.existing-session>div:first-child{min-width:0}.existing-session p{display:grid;min-width:0;margin:0}.existing-session strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.existing-session small{color:var(--muted);font-size:11px}.session-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(15,138,126,.12)}.session-actions{justify-content:flex-end;margin-top:9px}.session-actions a,.session-actions button{min-height:36px;padding:0 10px;border:0;background:transparent;color:var(--accent-dark);font-size:12px;font-weight:800;text-decoration:none;cursor:pointer}.account-kind{margin:0 0 28px;padding:0;border:0}.account-kind legend{margin-bottom:9px;color:var(--muted);font-size:12px;font-weight:750}.account-kind-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}.account-kind-option{display:grid;grid-template-columns:42px 1fr;gap:10px;align-items:center;min-height:70px;padding:10px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.46);color:var(--text);text-align:left;cursor:pointer;transition:border-color .16s ease,background-color .16s ease,transform .1s ease}.account-kind-option:active,.submit-btn:active,.back-link:active{transform:scale(.98)}.account-kind-option.active{border-color:rgba(15,138,126,.42);background:var(--accent-soft)}.kind-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--surface-solid);color:var(--accent-dark);font-size:11px;font-weight:850;box-shadow:0 4px 12px rgba(31,72,63,.08)}.account-kind-option>span:last-child{display:grid}.account-kind-option strong{font-size:14px}.account-kind-option small{margin-top:2px;color:var(--muted);font-size:11px}.auth-heading h2,.registration-success h2{margin:6px 0 4px;font-size:28px;line-height:1.15;letter-spacing:-.025em}.auth-heading>p:last-child{margin:0;color:var(--muted);font-size:13px}.mode-switch{display:grid;grid-template-columns:1fr 1fr;margin:22px 0 18px;padding:4px;border-radius:13px;background:rgba(23,58,50,.065)}.mode-switch button{min-height:40px;border:0;border-radius:10px;background:transparent;color:var(--muted);font-weight:800;cursor:pointer}.mode-switch button[aria-selected="true"]{background:var(--surface-solid);color:var(--text);box-shadow:0 2px 10px rgba(23,58,50,.08)}.auth-form{display:grid;gap:14px}.auth-form[hidden],.conditional-fields[hidden],.registration-success[hidden],.existing-session[hidden]{display:none}.conditional-fields{display:grid;grid-template-columns:1.35fr .85fr;gap:12px}.auth-form label{display:grid;gap:6px;color:var(--text);font-size:12px;font-weight:750}.auth-form input,.auth-form select{width:100%;height:48px;padding:0 13px;border:1px solid var(--line);border-radius:12px;outline:0;background:rgba(255,255,255,.62);color:var(--text);transition:border-color .15s ease,box-shadow .15s ease}.auth-form input:focus,.auth-form select:focus{border-color:rgba(15,138,126,.62);box-shadow:0 0 0 4px rgba(15,138,126,.1)}.auth-form input[aria-invalid="true"]{border-color:var(--danger);box-shadow:0 0 0 4px var(--danger-soft)}.password-field{position:relative;display:block}.password-field input{padding-right:62px}.password-toggle{position:absolute;top:4px;right:4px;min-width:50px;height:40px;border:0;border-radius:9px;background:transparent;color:var(--accent-dark);font-size:12px;font-weight:800;cursor:pointer}.password-hint{margin:-4px 0 0;color:var(--muted);font-size:11px}.form-status{min-height:0;color:var(--danger);font-size:12px;font-weight:700}.form-status:not(:empty){padding:9px 11px;border-radius:10px;background:var(--danger-soft)}.submit-btn{display:flex;align-items:center;justify-content:center;min-height:50px;padding:0 18px;border:0;border-radius:13px;background:var(--accent);color:#fff;font-weight:850;text-decoration:none;cursor:pointer;box-shadow:0 9px 20px rgba(15,138,126,.2);transition:transform .1s ease,filter .15s ease}.submit-btn:hover{filter:brightness(.97)}.submit-btn:disabled{cursor:wait;opacity:.72}.submit-btn i{display:none;width:15px;height:15px;margin-left:9px;border:2px solid rgba(255,255,255,.42);border-top-color:#fff;border-radius:50%;animation:authSpin .7s linear infinite}.submit-btn.loading i{display:block}.sso-link{display:flex;align-items:center;justify-content:center;min-height:44px;color:var(--accent-dark);font-size:12px;font-weight:800}.registration-success{text-align:center}.success-mark{display:grid;place-items:center;width:54px;height:54px;margin:0 auto 15px;border-radius:18px;background:var(--accent-soft);color:var(--accent);font-size:24px;font-weight:900}.registration-success>p:not(.eyebrow){color:var(--muted);font-size:13px}.invite-code-row{display:grid;grid-template-columns:1fr auto;gap:9px;margin:18px 0}.invite-code-row code{display:flex;align-items:center;justify-content:center;min-height:48px;border:1px dashed rgba(15,138,126,.38);border-radius:12px;background:var(--accent-soft);color:var(--accent-dark);font-size:16px;font-weight:850;letter-spacing:.08em}.invite-code-row button{min-height:48px;padding:0 13px;border:1px solid var(--line);border-radius:12px;background:var(--surface-solid);color:var(--text);font-weight:800;cursor:pointer}.success-continue{margin-top:10px}.auth-boundary{margin:20px 0 0;color:var(--muted);font-size:10px;line-height:1.6;text-align:center}@keyframes authSpin{to{transform:rotate(360deg)}}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(15,138,126,.25);outline-offset:3px}
@media (max-width:860px){.auth-shell{padding-top:18px}.auth-layout{display:block;min-height:0;padding:24px 0 36px}.auth-story{display:none}.auth-card{width:min(100%,560px);margin:0 auto}}
@media (max-width:560px){.auth-shell{padding-inline:14px;padding-bottom:28px}.brand small{display:none}.back-link{padding-inline:11px}.auth-layout{padding-top:18px;padding-bottom:0}.auth-card{padding:18px;border-radius:20px}.account-kind{margin-bottom:20px}.account-kind-option{grid-template-columns:36px minmax(0,1fr);gap:9px;min-height:62px;padding:9px;text-align:left}.kind-icon{width:36px;height:36px;margin:0;border-radius:10px}.conditional-fields{grid-template-columns:1fr}.invite-code-row{grid-template-columns:1fr}.account-kind-option,.mode-switch button,.password-toggle,.submit-btn,.invite-code-row button{min-height:44px}}
@media (max-width:360px){.auth-topbar{gap:8px}.brand{flex:0 0 44px}.brand>span:last-child{display:none}.brand-mark{width:44px;min-width:44px;max-width:44px;padding:0;overflow:hidden;font-size:0;white-space:nowrap}.brand-mark::before{content:"医";font-size:17px}.auth-links{min-width:0;flex:1;justify-content:flex-end}.support-link,.back-link{flex:0 1 auto;min-width:0;padding-inline:8px;white-space:nowrap}.support-link{max-width:132px;overflow:hidden;text-overflow:ellipsis}}
@media (min-width:861px) and (max-height:820px){.auth-layout{align-items:start;min-height:0;padding:28px 0 40px}.auth-story{position:sticky;top:24px}.auth-story h1{font-size:clamp(34px,4vw,50px)}.audience-notes{margin-top:24px}.privacy-note{margin-top:20px}}
@media (prefers-color-scheme:dark){:root{--bg:#0d1715;--surface:rgba(21,34,31,.84);--surface-solid:#1b2a27;--text:#edf6f3;--muted:#9fb0ac;--line:rgba(222,242,236,.12);--accent:#4bc4b5;--accent-dark:#70d8ca;--accent-soft:rgba(75,196,181,.12);--danger:#ff8d94;--danger-soft:rgba(255,110,121,.12);--shadow:0 28px 80px rgba(0,0,0,.36)}body{background:radial-gradient(circle at 12% 8%,rgba(75,196,181,.12),transparent 32rem),linear-gradient(145deg,#111d1a 0%,var(--bg) 55%,#09110f 100%)}.back-link,.account-kind-option,.auth-form input,.auth-form select{background:rgba(25,43,39,.62)}.auth-card{border-color:rgba(255,255,255,.09)}.brand-mark{color:#09211d}.submit-btn{color:#07211d}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.account-kind-option,.submit-btn,.back-link{transition:none}.submit-btn i{animation:none;border-top-color:transparent}}
@media (prefers-reduced-transparency:reduce){.auth-card,.back-link{backdrop-filter:none;background:var(--surface-solid)}}
@media (prefers-contrast:more){.auth-card,.account-kind-option,.auth-form input,.auth-form select,.back-link{border-color:currentColor}.auth-card{background:var(--surface-solid)}}
.brand{min-height:44px}.session-actions a,.session-actions button{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px}
.brand .brand-mark{display:block;width:42px;min-width:42px;height:42px;padding:0;border:0;border-radius:0;background:transparent;box-shadow:none;object-fit:contain}
@media (max-width:360px){.brand .brand-mark{width:44px;min-width:44px;max-width:44px;height:44px}.brand .brand-mark::before{content:none}}
.password-change-form{margin-top:4px}.password-change-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.password-change-heading h2{margin:5px 0 0;font-size:24px;line-height:1.15}.password-change-heading>button{min-width:44px;min-height:44px;border:0;border-radius:11px;background:transparent;color:var(--accent-dark);font-size:12px;font-weight:800;cursor:pointer}.password-change-note{margin:0;padding:10px 12px;border-left:3px solid var(--accent);border-radius:0 10px 10px 0;background:var(--accent-soft);color:var(--muted);font-size:11px;line-height:1.6}
.mode-switch[hidden]{display:none}
.local-account-notice{margin:20px 0 8px;padding:12px 14px;border:1px solid rgba(15,138,126,.22);border-radius:12px;background:var(--accent-soft);color:var(--text);font-size:12px;line-height:1.6}.local-account-notice[hidden]{display:none}.auth-card.local-account-disabled .mode-switch,.auth-card.local-account-disabled #loginForm,.auth-card.local-account-disabled #registerForm,.auth-card.local-account-disabled #passwordRecoveryForm{display:none}.auth-card.local-account-disabled .sso-link{margin-top:18px;border:1px solid rgba(15,138,126,.3);border-radius:12px;background:var(--accent-soft)}
.static-access-form{margin-top:14px}.static-access-note{margin:-2px 0 0;color:var(--muted);font-size:11px;line-height:1.6}.session-actions [hidden]{display:none}
.recovery-link{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border:0;background:transparent;color:var(--accent-dark);font-size:12px;font-weight:800;cursor:pointer}.recovery-link[hidden]{display:none}
.sso-link[hidden]{display:none}
.data-region-note{display:grid;grid-template-columns:auto 1fr;gap:10px;margin:14px 0 0;padding:12px 13px;border-left:3px solid var(--accent);border-radius:0 11px 11px 0;background:var(--accent-soft);color:var(--muted);font-size:11px;line-height:1.6}.data-region-note strong{color:var(--accent-dark);white-space:nowrap}.auth-boundary{display:grid;gap:6px}.auth-boundary>span:last-child{display:flex;justify-content:center;gap:14px}.auth-boundary a{display:inline-flex;align-items:center;min-height:44px;color:var(--accent-dark);font-size:11px;font-weight:800;text-decoration:underline;text-underline-offset:3px}

/* 首屏轻量编排，表单切换由 auth.js 从当前屏幕状态接续。 */
body::before,body::after{content:"";position:fixed;z-index:-1;pointer-events:none;border-radius:50%;filter:blur(2px);will-change:transform,opacity}
body::before{width:min(54vw,720px);aspect-ratio:1;left:-18vw;top:-28vw;background:radial-gradient(circle,rgba(22,177,159,.16),rgba(22,177,159,0) 68%);animation:authAmbientOne 13s ease-in-out infinite alternate}
body::after{width:min(46vw,620px);aspect-ratio:1;right:-14vw;bottom:-25vw;background:radial-gradient(circle,rgba(77,152,218,.11),rgba(77,152,218,0) 69%);animation:authAmbientTwo 16s ease-in-out infinite alternate}
.auth-topbar{animation:authTopbarEnter 420ms cubic-bezier(.2,.75,.25,1) both}
.auth-story{animation:authStoryEnter 480ms cubic-bezier(.2,.75,.25,1) 40ms both}
.auth-card{animation:authCardEnter 580ms cubic-bezier(.16,1,.3,1) 70ms both}
.audience-notes article{animation:authNoteEnter 520ms cubic-bezier(.16,1,.3,1) both}
.audience-notes article:nth-child(1){animation-delay:160ms}.audience-notes article:nth-child(2){animation-delay:230ms}
@keyframes authTopbarEnter{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
@keyframes authStoryEnter{from{transform:translateY(8px)}to{transform:none}}
@keyframes authCardEnter{from{opacity:0;transform:translateY(12px) scale(.988)}to{opacity:1;transform:none}}
@keyframes authNoteEnter{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes authAmbientOne{from{opacity:.55;transform:translate3d(-3%,0,0) scale(.96)}to{opacity:1;transform:translate3d(12%,9%,0) scale(1.08)}}
@keyframes authAmbientTwo{from{opacity:.5;transform:translate3d(4%,6%,0) scale(.94)}to{opacity:.95;transform:translate3d(-12%,-8%,0) scale(1.07)}}
.auth-card-transitioning{overflow:hidden}
@media (prefers-reduced-motion:reduce){body::before,body::after,.auth-topbar,.auth-story,.auth-card,.audience-notes article{animation:none!important;opacity:1;transform:none}}

/* 登录 / 注册使用同一个有空间来源的滑动指示器。 */
.brand-mark{width:auto;min-width:42px;padding-inline:10px}
.auth-links{display:flex;align-items:center;gap:8px}
.support-link{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:var(--accent-soft);color:var(--accent-dark);font-size:13px;font-weight:700;text-decoration:none}
.support-link[hidden]{display:none}
@media (max-width:560px){.auth-links{gap:4px}.support-link,.back-link{padding-inline:10px;font-size:12px}}
.mode-switch{position:relative;isolation:isolate}
.mode-switch::before{content:"";position:absolute;z-index:-1;top:4px;bottom:4px;left:4px;width:calc(50% - 4px);border-radius:10px;background:var(--surface-solid);box-shadow:0 2px 10px rgba(23,58,50,.08);transform:translateX(0);transition:transform 380ms cubic-bezier(.16,1,.3,1)}
.mode-switch.register-active::before{transform:translateX(100%)}
.mode-switch button{position:relative;z-index:1;transition:color 180ms ease,transform 100ms ease}
.mode-switch button:active{transform:scale(.97)}
.mode-switch button[aria-selected="true"]{background:transparent;box-shadow:none}
.account-kind-option .kind-icon{transition:transform 300ms cubic-bezier(.16,1,.3,1),box-shadow 300ms ease}
.account-kind-option.active .kind-icon{transform:scale(1.06);box-shadow:0 8px 20px rgba(15,138,126,.16)}
@media (prefers-reduced-motion:reduce){.mode-switch::before,.mode-switch button,.account-kind-option .kind-icon{transition:none!important}.account-kind-option.active .kind-icon{transform:none}}