:root {
  --account-surface: #ffffff;
  --account-surface-soft: #f7f8fa;
  --account-ink: #18202b;
  --account-muted: #66707d;
  --account-line: #dfe4ea;
  --account-accent: #315f88;
  --account-accent-strong: #244b6e;
  --account-success: #287a59;
}
[data-theme="dark"] {
  --account-surface: #17212d;
  --account-surface-soft: #111a24;
  --account-ink: #eef2f5;
  --account-muted: #a8b2bd;
  --account-line: #334150;
  --account-accent: #8db9df;
  --account-accent-strong: #a6c9e7;
  --account-success: #77c99e;
}
.account-page { min-height: 100vh; background: var(--bg-primary); color: var(--account-ink); }
.account-main { padding: 110px 0 96px; }
.account-shell { display: grid; grid-template-columns: minmax(300px, .86fr) minmax(360px, 470px); gap: clamp(42px, 8vw, 110px); align-items: center; max-width: 1040px; }
.account-intro { padding: 12px 0; }
.account-eyebrow { color: var(--account-accent); font-size: .75rem; font-weight: 800; letter-spacing: .14em; }
.account-intro h1 { max-width: 520px; margin: 18px 0 16px; font-size: clamp(2.2rem, 5vw, 4rem); line-height: 1.12; letter-spacing: -.045em; }
.account-intro > p { max-width: 470px; margin: 0; color: var(--account-muted); font-size: 1.04rem; line-height: 1.85; }
.account-intro-list { display: grid; gap: 16px; max-width: 470px; margin: 40px 0 34px; }
.account-intro-list > div { display: grid; grid-template-columns: 30px 1fr; gap: 14px; align-items: start; padding-top: 15px; border-top: 1px solid var(--account-line); }
.account-intro-list span { color: var(--account-accent); font-size: .72rem; font-weight: 800; letter-spacing: .08em; }
.account-intro-list p { margin: -2px 0 0; color: var(--account-muted); font-size: .88rem; line-height: 1.6; }
.account-status { display: inline-flex; align-items: center; padding: 9px 12px; border: 1px solid var(--account-line); border-radius: 8px; color: var(--account-muted); background: var(--account-surface-soft); font-size: .78rem; }
.status-dot { display: inline-block; width: 7px; height: 7px; margin-right: 8px; border-radius: 50%; background: var(--account-success); }
.account-auth-card { width: 100%; min-height: 480px; box-sizing: border-box; padding: clamp(24px, 4vw, 36px); border: 1px solid var(--account-line); border-radius: 14px; background: var(--account-surface); box-shadow: 0 14px 35px rgba(20, 32, 44, .09); }
.account-loading-panel { min-height: 406px; display: grid; place-content: center; justify-items: center; text-align: center; }
.account-loading-panel[hidden] { display: none; }
.account-loading-mark { width: 24px; height: 24px; margin-bottom: 18px; border: 2px solid var(--account-line); border-top-color: var(--account-accent); border-radius: 50%; animation: account-loading .8s linear infinite; }
.account-loading-panel strong { color: var(--account-ink); font-size: 1rem; }
.account-loading-panel p { max-width: 270px; margin: 8px 0 0; color: var(--account-muted); font-size: .8rem; line-height: 1.6; }
.account-session-panel, .auth-view.is-active { animation: account-reveal .16s ease-out; }
.account-session-panel[hidden] { display: none; }
.account-session-label { display: block; padding-bottom: 16px; border-bottom: 1px solid var(--account-line); color: var(--account-muted); font-size: .76rem; font-weight: 800; letter-spacing: .08em; }
.account-session-user { display: flex; align-items: center; gap: 16px; padding: 22px 0; }
.account-session-avatar { display: grid; place-items: center; flex: 0 0 52px; width: 52px; height: 52px; box-sizing: border-box; border-radius: 12px; color: #fff; background: var(--account-accent-strong); font-size: 1.2rem; font-weight: 800; line-height: 1; text-align: center; }
.account-session-identity { min-width: 0; }
.account-session-identity strong, .account-session-identity span { display: block; }
.account-session-identity strong { color: var(--account-ink); font-size: 1.08rem; line-height: 1.35; }
.account-session-identity span { margin-top: 5px; color: var(--account-muted); font-size: .82rem; line-height: 1.45; overflow-wrap: anywhere; }
.account-session-meta { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 18px; padding: 14px 15px; border: 1px solid var(--account-line); border-radius: 8px; color: var(--account-muted); background: var(--account-surface-soft); font-size: .82rem; }
.account-session-meta strong { color: var(--account-ink); font-size: .82rem; }
.account-session-actions { display: grid; gap: 10px; padding-top: 2px; }
.account-session-actions[hidden], .account-policy-update[hidden] { display: none !important; }
.account-session-actions [hidden] { display: none !important; }
.account-policy-update { margin: 8px 0 18px; padding: 16px; border: 1px solid color-mix(in srgb, var(--account-accent) 45%, var(--account-line)); border-radius: 10px; background: color-mix(in srgb, var(--account-accent) 7%, var(--account-surface)); }
.account-policy-update > strong { display: block; color: var(--account-ink); font-size: .96rem; }
.account-policy-update > p { margin: 7px 0 15px; color: var(--account-muted); font-size: .82rem; line-height: 1.65; }
.account-action-link { box-sizing: border-box; width: 100%; text-decoration: none; }
.account-secondary { display: block; border: 1px solid var(--account-line); border-radius: 7px; padding: 12px 14px; color: var(--account-ink); background: var(--account-surface-soft); text-align: center; font-size: .86rem; font-weight: 700; }
.account-secondary:hover { border-color: var(--account-accent); color: var(--account-accent); }
.account-logout { justify-self: center; border: 0; margin-top: 4px; padding: 9px 14px; color: #b54848; background: transparent; font: inherit; font-size: .84rem; font-weight: 700; cursor: pointer; }
.account-logout:hover { color: #963b3b; text-decoration: underline; }
.auth-tabs { display: flex; gap: 4px; padding-bottom: 12px; margin-bottom: 28px; border-bottom: 1px solid var(--account-line); }
.auth-tabs[hidden] { display: none; }
.auth-tab { position: relative; border: 0; padding: 0 14px 12px; color: var(--account-muted); background: transparent; font: inherit; font-size: .96rem; font-weight: 700; cursor: pointer; }
.auth-tab::after { position: absolute; right: 14px; bottom: -13px; left: 14px; height: 2px; background: transparent; content: ""; }
.auth-tab.is-active { color: var(--account-ink); }
.auth-tab.is-active::after { background: var(--account-accent); }
.auth-view[hidden] { display: none; }
.auth-view h2 { margin: 0 0 8px; font-size: 1.55rem; letter-spacing: -.025em; }
.panel-intro { margin: 0 0 25px; color: var(--account-muted); line-height: 1.7; }
.account-notice { margin: -7px 0 23px; padding: 13px 14px; border: 1px solid var(--account-accent); border-radius: 8px; color: var(--account-ink); background: color-mix(in srgb, var(--account-accent) 11%, var(--account-surface)); font-size: .84rem; line-height: 1.65; }
.account-notice[data-tone="success"] { border-color: var(--account-success); background: color-mix(in srgb, var(--account-success) 11%, var(--account-surface)); }
.account-form { display: grid; gap: 16px; }
.account-region-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.region-hint { margin: -6px 0 0; color: var(--account-muted); font-size: .76rem; line-height: 1.55; }
.check-line a { color: var(--account-accent); font-weight: 700; }
.account-form label:not(.check-line) { display: grid; gap: 8px; color: var(--account-ink); font-size: .83rem; font-weight: 700; }
.account-form input:not([type="checkbox"]) { width: 100%; box-sizing: border-box; border: 1px solid var(--account-line); border-radius: 7px; padding: 12px 13px; color: var(--account-ink); background: var(--account-surface); font: inherit; outline: none; transition: border-color .18s, box-shadow .18s; }
.account-form input:not([type="checkbox"])::placeholder { color: var(--account-muted); opacity: .78; }
.account-form input:not([type="checkbox"]):focus { border-color: var(--account-accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--account-accent) 18%, transparent); }
.account-primary { display: flex; justify-content: space-between; align-items: center; margin-top: 3px; border: 0; border-radius: 7px; padding: 13px 15px; color: #fff; background: var(--account-accent-strong); font: inherit; font-weight: 800; cursor: pointer; }
.account-primary:hover { filter: brightness(1.08); }
.account-primary span { font-size: 1.1rem; }
.text-button, .back-button { border: 0; padding: 0; color: var(--account-accent); background: transparent; font: inherit; font-size: .82rem; font-weight: 700; cursor: pointer; }
.text-button { margin-top: 19px; }
.back-button { margin-bottom: 21px; }
.check-line { display: flex; align-items: flex-start; gap: 9px; color: var(--account-muted); font-size: .78rem; line-height: 1.45; }
.check-line input { margin-top: 2px; accent-color: var(--account-accent); }
.account-form.is-submitting { opacity: .72; pointer-events: none; }
.account-primary:disabled { cursor: wait; }
@keyframes account-loading { to { transform: rotate(360deg); } }
@keyframes account-reveal { from { opacity: 0; } to { opacity: 1; } }
.account-toast { position: fixed; right: 24px; bottom: 24px; z-index: 20; max-width: min(390px, calc(100vw - 32px)); padding: 14px 17px; border: 1px solid var(--account-line); border-radius: 9px; color: var(--account-ink); background: var(--account-surface); box-shadow: 0 12px 30px rgba(20, 32, 44, .18); font-size: .86rem; font-weight: 700; line-height: 1.55; opacity: 0; transform: translateY(10px); pointer-events: none; transition: opacity .2s, transform .2s; }
.account-toast.is-visible { opacity: 1; transform: translateY(0); }
.account-toast.is-emphasis { border-color: var(--account-success); }
.account-toast.is-emphasis::before { display: block; margin-bottom: 3px; color: var(--account-success); content: "请完成邮箱验证"; font-size: .72rem; letter-spacing: .05em; }
@media (max-width: 800px) {
  .account-main { padding: 90px 0 60px; }
  .account-shell { display: flex; flex-direction: column; align-items: stretch; gap: 0; max-width: 520px; }
  .account-intro { display: contents; }
  .account-eyebrow { order: 0; }
  .account-intro h1 { order: 1; margin: 10px 0 8px; font-size: clamp(2rem, 9vw, 2.6rem); }
  .account-intro > p { order: 2; margin-bottom: 20px; font-size: .92rem; line-height: 1.6; }
  .account-auth-card { order: 3; }
  .account-intro-list { order: 4; gap: 12px; margin: 28px 0 20px; }
  .account-status { order: 5; align-self: flex-start; }
  .account-status { font-size: .74rem; }
  .account-auth-card { min-height: 0; }
  .account-loading-panel { min-height: 300px; }
  .account-region-fields { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}