/* Video Transcriber · account entry
   The moving atmosphere remains outside the form. The account cabin itself is
   stable; only its optical edge reacts to the scene and pointer. */

:root{
  --auth-card:color-mix(in srgb,var(--vt-surface) 82%,transparent);
  --auth-card-strong:color-mix(in srgb,var(--vt-surface-raised) 88%,transparent);
  --auth-edge:color-mix(in srgb,var(--vt-glass-border) 76%,var(--vt-border));
  --auth-shadow:0 34px 90px rgba(12,18,27,.24),0 9px 28px rgba(12,18,27,.10),inset 0 1px 0 rgba(255,255,255,.22);
  --auth-ease:cubic-bezier(.23,1,.32,1);
}
html,body{min-width:320px;min-height:100%}
body{
  position:relative;display:grid;place-items:center;min-height:100dvh;margin:0;padding:24px;
  overflow-x:hidden;background:var(--vt-bg);color:var(--vt-text);
}
body::before{
  content:"";position:fixed;z-index:-2;inset:0;pointer-events:none;
  background:
    radial-gradient(52rem 34rem at 13% 0%,color-mix(in srgb,var(--vt-focus) 12%,transparent),transparent 68%),
    radial-gradient(42rem 30rem at 88% 104%,color-mix(in srgb,var(--vt-accent) 9%,transparent),transparent 70%),
    linear-gradient(90deg,color-mix(in srgb,var(--vt-bg) 20%,transparent),transparent 32% 68%,color-mix(in srgb,var(--vt-bg) 18%,transparent));
}
body::after{
  content:"";position:fixed;z-index:-1;inset:0;pointer-events:none;opacity:.56;
  background:linear-gradient(180deg,color-mix(in srgb,var(--vt-bg) 5%,transparent),transparent 35%,color-mix(in srgb,var(--vt-bg) 24%,transparent));
}
.ambient-canvas{
  position:fixed;z-index:-3;inset:0;width:100vw;height:100dvh;display:block;pointer-events:none;
  opacity:0;transition:opacity 720ms var(--auth-ease);
}
.ambient-canvas[data-ambient-ready]{opacity:.88}
.ambient-canvas[data-ambient-fallback]{display:none}
:root[data-appearance="calm"] .ambient-canvas{display:none}
h1,h2,p{margin-top:0}

.auth-stage{width:min(1120px,100%);min-height:min(720px,calc(100dvh - 48px));display:grid;grid-template-rows:auto 1fr;gap:18px}
.auth-topbar{height:46px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 4px}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--vt-text-strong);text-decoration:none}
.brand-mark{width:35px;height:35px;display:block;flex:none}
:root[data-appearance] .brand-mark:has(img){border:0;background:transparent;box-shadow:none;overflow:hidden}
.brand-mark>img{width:100%;height:100%;display:block;object-fit:contain}
.brand-name{font-size:13.5px;font-weight:740;letter-spacing:-.018em}
.privacy-chip,.account-privacy{
  display:inline-flex;align-items:center;gap:7px;color:var(--vt-text-muted);font-size:10.5px;font-weight:650;
}
.privacy-chip{padding:7px 10px;border:1px solid color-mix(in srgb,var(--vt-border) 74%,transparent);border-radius:999px;background:color-mix(in srgb,var(--vt-surface) 22%,transparent)}
.privacy-chip i,.account-privacy i{width:6px;height:6px;border-radius:50%;background:var(--vt-success);box-shadow:0 0 0 4px color-mix(in srgb,var(--vt-success) 11%,transparent)}

.auth-shell{
  min-height:0;display:grid;grid-template-columns:minmax(0,1fr) minmax(390px,430px);
  align-items:center;gap:clamp(54px,7vw,96px);padding:32px clamp(12px,3vw,34px) 52px;
}
.welcome-panel{min-width:0;padding:22px 0 8px}
.welcome-copy{max-width:590px}
.eyebrow{
  margin:0 0 18px;color:var(--vt-accent-hover);font-size:11px;font-weight:760;letter-spacing:.12em;text-transform:uppercase;
}
.welcome-copy h1{
  max-width:590px;margin:0 0 22px;color:var(--vt-text-strong);
  font-size:clamp(42px,5vw,66px);font-weight:760;line-height:1.06;letter-spacing:-.06em;text-wrap:balance;
  text-shadow:0 1px 18px color-mix(in srgb,var(--vt-bg) 22%,transparent);
}
.welcome-text{max-width:530px;margin:0;color:var(--vt-text-muted);font-size:14px;line-height:1.82;text-wrap:pretty}
.value-list{
  max-width:590px;margin:64px 0 0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  border-top:1px solid color-mix(in srgb,var(--vt-border) 66%,transparent);
}
.value-list li{min-width:0;padding:16px 16px 0 0;display:flex;align-items:flex-start;gap:11px}
.value-list li+li{padding-left:16px;border-left:1px solid color-mix(in srgb,var(--vt-border) 60%,transparent)}
.value-list>li>span{padding-top:2px;color:var(--vt-text-faint);font:650 9px/1.4 var(--vt-font-mono)}
.value-list div{min-width:0;display:grid;gap:4px}
.value-list strong{color:var(--vt-text-strong);font-size:11.5px;font-weight:700;white-space:nowrap}
.value-list small{color:var(--vt-text-faint);font-size:9.5px;line-height:1.45;white-space:nowrap}

.account-orbit{position:relative;isolation:isolate}
.account-orbit::before{
  content:"";position:absolute;z-index:-1;inset:10% -12% -12%;border-radius:42%;
  background:radial-gradient(circle at 58% 60%,color-mix(in srgb,var(--vt-accent) 15%,transparent),transparent 63%);
  filter:blur(34px);opacity:.74;transform:scale(.96);
  animation:auth-orbit-breathe 14s var(--auth-ease) infinite alternate;
}
.account-panel{
  --auth-glow-x:68%;--auth-glow-y:0%;
  position:relative;isolation:isolate;overflow:hidden;padding:38px 38px 30px;
  border:1px solid var(--auth-edge);border-radius:28px;background:var(--auth-card);
  -webkit-backdrop-filter:blur(28px) saturate(1.34);backdrop-filter:blur(28px) saturate(1.34);
  box-shadow:var(--auth-shadow);
}
.account-panel::before{
  content:"";position:absolute;z-index:-1;inset:-1px;pointer-events:none;opacity:.68;
  background:
    radial-gradient(260px circle at var(--auth-glow-x) var(--auth-glow-y),rgba(255,255,255,.23),transparent 68%),
    linear-gradient(145deg,rgba(255,255,255,.10),transparent 28% 74%,rgba(255,255,255,.025));
  transition:opacity 240ms ease;
}
.account-panel::after{
  content:"";position:absolute;z-index:-1;right:-84px;bottom:-112px;width:250px;height:250px;border-radius:50%;
  border:1px solid color-mix(in srgb,var(--vt-accent) 14%,transparent);
  box-shadow:0 0 0 28px color-mix(in srgb,var(--vt-accent) 2.5%,transparent);
  opacity:.78;pointer-events:none;
}
.material-edge{position:absolute;inset:0;border-radius:inherit;pointer-events:none;box-shadow:inset 0 -1px 0 rgba(0,0,0,.10)}
.account-head{margin-bottom:24px}
.account-heading-row{display:flex;align-items:center;justify-content:space-between;gap:18px}
.account-kicker{margin:0;color:var(--vt-accent-hover);font-size:10.5px;font-weight:760;letter-spacing:.08em}
.account-privacy{font-size:9.5px;color:var(--vt-text-faint)}
.account-privacy i{width:5px;height:5px;box-shadow:none}
.account-head h2{margin:12px 0 8px;color:var(--vt-text-strong);font-size:30px;font-weight:760;line-height:1.15;letter-spacing:-.045em}
.tip{margin:0;color:var(--vt-text-muted);font-size:11.5px;line-height:1.65}

/* 邀请落地页:朋友点开链接后,第一眼要看到「这条邀请还有效」。 */
.invite-banner{
  display:flex;align-items:center;gap:9px;margin:0 0 18px;padding:11px 13px;
  border:1px solid color-mix(in srgb,var(--vt-success) 32%,transparent);border-radius:11px;
  background:color-mix(in srgb,var(--vt-success) 9%,transparent);
  color:var(--vt-text-strong);font-size:11px;font-weight:620;line-height:1.5;
}
.invite-banner i{
  flex:none;width:6px;height:6px;border-radius:50%;background:var(--vt-success);
  box-shadow:0 0 0 4px color-mix(in srgb,var(--vt-success) 13%,transparent);
}
.invite-banner[data-state="invalid"]{
  border-color:color-mix(in srgb,var(--vt-danger) 32%,transparent);
  background:color-mix(in srgb,var(--vt-danger) 8%,transparent);
}
.invite-banner[data-state="invalid"] i{
  background:var(--vt-danger);box-shadow:0 0 0 4px color-mix(in srgb,var(--vt-danger) 13%,transparent);
}

.tabs{
  position:relative;display:grid;grid-template-columns:1fr 1fr;gap:3px;margin-bottom:24px;padding:3px;
  border:1px solid color-mix(in srgb,var(--vt-border) 78%,transparent);border-radius:12px;
  background:color-mix(in srgb,var(--vt-surface-subtle) 62%,transparent);
}
.tabs button{
  height:36px;border:0;border-radius:9px;background:transparent;color:var(--vt-text-muted);
  font-size:11.5px;font-weight:650;transition:background-color 170ms ease,color 170ms ease,box-shadow 170ms ease,transform 100ms ease;
}
.tabs button:hover{color:var(--vt-text-strong)}
.tabs button.active{
  background:var(--auth-card-strong);color:var(--vt-text-strong);font-weight:720;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.20),0 3px 11px rgba(10,15,22,.08);
}
.tabs button:active{transform:scale(.98)}
.field{margin-bottom:17px}
.field label{display:block;margin:0 0 7px;color:var(--vt-text);font-size:11px;font-weight:700}
.field input{
  width:100%;height:48px;padding:0 13px;border:1px solid color-mix(in srgb,var(--vt-border-strong) 82%,transparent);
  border-radius:11px;outline:0;background:color-mix(in srgb,var(--vt-surface-raised) 90%,transparent);
  color:var(--vt-text-strong);font-size:13px;box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
  transition:border-color 150ms ease,box-shadow 150ms ease,background-color 150ms ease;
}
.field input::placeholder{color:var(--vt-text-faint)}
.field input:hover{border-color:var(--vt-border-strong);background:var(--vt-surface-raised)}
.field input:focus{border-color:var(--vt-focus);box-shadow:0 0 0 3px color-mix(in srgb,var(--vt-focus) 14%,transparent),inset 0 1px 0 rgba(255,255,255,.12)}
.field-hint{margin:6px 1px 0;color:var(--vt-text-faint);font-size:9.5px;line-height:1.5}
.password-wrap{position:relative}
.password-wrap input{padding-right:64px}
.reveal-password{
  position:absolute;right:6px;top:6px;width:50px;height:36px;border:0;border-radius:7px;background:transparent;
  color:var(--vt-text-muted);font-size:10px;font-weight:680;transition:background-color 140ms ease,color 140ms ease,transform 100ms ease;
}
.reveal-password:hover{background:var(--vt-surface-strong);color:var(--vt-text-strong)}
.primary-button,.secondary-button{
  width:100%;min-height:48px;border-radius:12px;font-size:12px;font-weight:760;
  transition:background-color 150ms ease,border-color 150ms ease,box-shadow 180ms ease,transform 110ms ease,opacity 150ms ease;
}
.primary-button{
  margin-top:4px;border:1px solid color-mix(in srgb,var(--vt-cta-bg) 82%,#fff);
  background:linear-gradient(145deg,color-mix(in srgb,var(--vt-cta-bg) 88%,#fff),var(--vt-cta-bg));color:var(--vt-cta-text);
  box-shadow:0 12px 28px color-mix(in srgb,var(--vt-cta-bg) 22%,transparent),inset 0 1px 0 rgba(255,255,255,.28);
}
.primary-button:hover:not(:disabled){
  border-color:var(--vt-cta-hover);background:linear-gradient(145deg,color-mix(in srgb,var(--vt-cta-hover) 88%,#fff),var(--vt-cta-hover));
  box-shadow:0 15px 34px color-mix(in srgb,var(--vt-cta-bg) 27%,transparent),inset 0 1px 0 rgba(255,255,255,.30);
  transform:translateY(-1px);
}
.primary-button:disabled{cursor:wait;opacity:.62}
.primary-button:active:not(:disabled),.secondary-button:active,.reveal-password:active{transform:scale(.985)}
.primary-button i{display:none;width:12px;height:12px;margin-left:7px;border:2px solid rgba(255,255,255,.42);border-top-color:#fff;border-radius:50%}
.primary-button[aria-busy="true"] i{display:inline-block;animation:login-spin .7s linear infinite}
.secondary-button{margin-top:9px;border:1px solid var(--vt-border);background:color-mix(in srgb,var(--vt-surface-subtle) 58%,transparent);color:var(--vt-text-muted)}
.secondary-button:hover{border-color:var(--vt-border-strong);background:var(--vt-surface-subtle);color:var(--vt-text-strong)}
.message{min-height:18px;margin-top:11px;font-size:11px;line-height:1.55}
.message.error{color:var(--vt-danger)}.message.success{color:var(--vt-success)}
.account-foot{
  margin:20px 0 0;padding-top:16px;border-top:1px solid color-mix(in srgb,var(--vt-border) 72%,transparent);
  color:var(--vt-text-faint);font-size:9.5px;line-height:1.58;
}
.account-foot span{margin-right:6px;color:var(--vt-accent-hover)}

/* foundation.css knows the older split-card login shell. This page deliberately
   releases that shared material so only the compact account cabin is glass. */
:root[data-appearance="glass"] .auth-shell{
  border:0;background:transparent;background-image:none;-webkit-backdrop-filter:none;backdrop-filter:none;box-shadow:none;
}
:root[data-appearance="glass"] .welcome-panel{border:0;background:transparent}
:root[data-appearance="glass"] .account-panel{
  border-color:var(--auth-edge);background:var(--auth-card);
  -webkit-backdrop-filter:blur(28px) saturate(1.34);backdrop-filter:blur(28px) saturate(1.34);box-shadow:var(--auth-shadow);
}
:root[data-appearance="glass"] body::before{
  background:
    radial-gradient(52rem 34rem at 13% 0%,color-mix(in srgb,var(--vt-focus) 12%,transparent),transparent 68%),
    radial-gradient(42rem 30rem at 88% 104%,color-mix(in srgb,var(--vt-accent) 9%,transparent),transparent 70%),
    linear-gradient(90deg,color-mix(in srgb,var(--vt-bg) 20%,transparent),transparent 32% 68%,color-mix(in srgb,var(--vt-bg) 18%,transparent));
}
:root[data-appearance="glass"] body::after{
  opacity:.56;mix-blend-mode:normal;
  background:linear-gradient(180deg,color-mix(in srgb,var(--vt-bg) 5%,transparent),transparent 35%,color-mix(in srgb,var(--vt-bg) 24%,transparent));
}

@keyframes login-spin{to{transform:rotate(360deg)}}
@keyframes auth-orbit-breathe{from{opacity:.56;transform:translate3d(-1%,1%,0) scale(.94)}to{opacity:.80;transform:translate3d(2%,-1%,0) scale(1.04)}}

@media(max-width:900px){
  body{align-items:start}
  .auth-stage{min-height:0}
  .auth-shell{grid-template-columns:1fr;gap:34px;padding:24px 6vw 44px}
  .welcome-panel{padding:12px 0 0}
  .welcome-copy{max-width:680px}.welcome-copy h1{max-width:700px;font-size:clamp(38px,8vw,56px)}
  .welcome-text{max-width:620px}
  .value-list{max-width:680px;margin-top:34px}
  .account-orbit{order:-1;width:min(440px,100%);margin:0 auto}
}

@media(max-height:760px) and (min-width:901px){
  body{padding-block:12px}
  .auth-stage{min-height:calc(100dvh - 24px);gap:6px}
  .auth-topbar{height:40px}
  .auth-shell{padding-top:4px;padding-bottom:6px}
  .account-panel{padding:30px 34px 24px}
  .account-head{margin-bottom:20px}.account-head h2{font-size:28px}
  .tabs{margin-bottom:20px}.field{margin-bottom:14px}
  .account-foot{margin-top:16px;padding-top:13px}
  .value-list{margin-top:44px}
}

@media(max-width:560px){
  body{padding:14px}
  .auth-stage{gap:6px}
  .auth-topbar{height:42px;padding:0 2px}.brand-mark{width:32px;height:32px}.brand-name{font-size:12.5px}
  .privacy-chip{padding:6px 8px;font-size:9.5px}
  .auth-shell{gap:26px;padding:20px 0 max(24px,env(safe-area-inset-bottom))}
  .welcome-panel{padding-inline:5px}
  .eyebrow{margin-bottom:12px;font-size:9.5px}
  .welcome-copy h1{margin-bottom:14px;font-size:36px;line-height:1.08}
  .welcome-text{font-size:12px;line-height:1.7}
  .value-list{display:none}
  .value-list li{padding:10px 0;border-top:1px solid color-mix(in srgb,var(--vt-border) 52%,transparent)}
  .value-list li+li{padding-left:0;border-left:0}
  .value-list small{white-space:normal}
  .account-panel{padding:28px 22px 23px;border-radius:24px}
  .account-head h2{font-size:26px}.account-head{margin-bottom:21px}
}

@media(prefers-reduced-motion:reduce){
  .ambient-canvas,.tabs button,.field input,.reveal-password,.primary-button,.secondary-button{transition:none}
  .account-orbit::before,.primary-button[aria-busy="true"] i{animation:none}
}
@media(prefers-reduced-transparency:reduce){
  body::after{opacity:.80;background:color-mix(in srgb,var(--vt-bg) 76%,transparent)}
  .account-panel{background:var(--vt-surface);-webkit-backdrop-filter:none;backdrop-filter:none}
  .account-panel::before{display:none}
  .field input{background:var(--vt-surface-raised)}
}