/* Account entry and modal match the paper theme without replacing the lesson. */
#cloud-account{overflow:visible;max-width:none;display:flex;align-items:center;gap:10px}
#cloud-account .account-login,#cloud-account .account-register{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:8px 17px;border:1px solid #614a32;border-radius:10px;font-size:14px;text-decoration:none;color:#443629;background:#fffaf0}
#cloud-account .account-register{background:#f5ce69;box-shadow:0 3px 0 #614a32}
#cloud-account .account-menu{position:relative}#cloud-account summary{cursor:pointer;display:flex;align-items:center;gap:8px;max-width:180px;padding:8px;border-radius:12px;list-style:none}#cloud-account summary::-webkit-details-marker{display:none}#cloud-account .account-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#cloud-account .account-avatar{display:grid;place-items:center;flex-shrink:0;width:32px;height:32px;border-radius:50%;background:#f5ce69;color:#443629;font-weight:bold}#cloud-account .account-links{position:absolute;right:0;top:100%;min-width:180px;padding:8px;background:#fffaf0;border:1px solid #b7a184;border-radius:12px;box-shadow:0 8px 24px #44362920;z-index:100}#cloud-account .account-links a{display:block;padding:12px;color:#443629;text-decoration:none;border-radius:8px}#cloud-account .account-links a:hover{background:#f3e9d4}
body.fang-auth-open{overflow:hidden}
#fang-auth-dialog{position:fixed;inset:0;margin:auto;width:min(460px,calc(100vw - 28px));max-height:calc(100dvh - 28px);overflow-y:auto;box-sizing:border-box;padding:32px;border:1.5px solid #6b533a;border-radius:22px;background:#fffaf0;color:#443629;box-shadow:5px 7px 0 #44362935,0 24px 80px #241b2630;text-align:left}
#fang-auth-dialog::backdrop{background:#30271f66;backdrop-filter:blur(5px)}
#fang-auth-dialog[open]{animation:auth-enter .18s ease-out}
#fang-auth-dialog .fang-auth-close{position:absolute;right:13px;top:12px;display:grid;place-items:center;width:36px;height:36px;padding:0;border:0;background:transparent;box-shadow:none;font:26px sans-serif;color:#766148;cursor:pointer}
.fang-auth-heading{display:flex;align-items:center;gap:12px;margin:0 34px 24px 0;font-size:15px;font-weight:650}.fang-auth-heading img{width:36px;height:36px}.fang-auth-heading small{display:block;font-size:9px;letter-spacing:1px;font-weight:400;margin-top:4px;color:#826e54}
#fang-auth-dialog h2{font-size:29px;line-height:1.3;margin:0 0 8px;font-family:inherit}.fang-auth-intro{font-size:14px;line-height:1.6;color:#806d56;margin:0 0 22px}
#fang-login{display:grid;gap:15px}#fang-login label:not(.fang-auth-consent){display:grid;gap:8px;font-size:14px;font-weight:600}
#fang-login input:not([type=checkbox]){display:block;width:100%;min-width:0;box-sizing:border-box;min-height:46px;border:1px solid #c6b495;border-radius:10px;background:#fffef9;padding:12px;font:inherit;font-size:16px;color:#443629;box-shadow:none}
#fang-login input:focus{outline:2px solid #a37835;outline-offset:2px}.fang-password{display:flex;position:relative}#fang-login .fang-password input{padding-right:66px}.fang-password button{position:absolute;right:7px;top:5px;height:36px;border:0;box-shadow:none;background:transparent;padding:5px 8px;font-size:12px;color:#735737}
#fang-auth-dialog .fang-auth-text{border:0;box-shadow:none;padding:0;background:transparent;color:#79532d;font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:3px;cursor:pointer}.fang-forgot{justify-self:end;margin-top:-3px}
#fang-auth-dialog .fang-auth-consent{display:flex;gap:9px;align-items:flex-start;font-size:12px;line-height:1.7;font-weight:400}.fang-auth-consent input{width:16px;height:16px;flex-shrink:0;margin:3px 0 0}.fang-auth-consent a{color:#735737}
#fang-auth-message{margin:0;font-size:13px;line-height:1.7;color:#874427;overflow-wrap:anywhere}#fang-auth-message:empty{display:none}
#fang-auth-dialog .fang-auth-submit{width:100%;min-height:46px;border:1.5px solid #614a32;border-radius:10px;background:#f5ce69;box-shadow:0 3px 0 #614a32;color:#392e24;font-size:15px;padding:11px;margin:0}
.fang-auth-divider{display:flex;align-items:center;gap:12px;margin:20px 0 14px;color:#8d7e6c;font-size:12px}.fang-auth-divider:before,.fang-auth-divider:after{content:'';height:1px;background:#e6d9c4;flex:1}
#fang-auth-dialog .fang-auth-google{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;min-height:46px;background:#fffef9;border:1px solid #c6b495;border-radius:10px;color:#443629;font-size:14px;box-shadow:none}.fang-auth-google span{font:bold 20px Arial;color:#4e694f}
.fang-auth-switch{text-align:center;font-size:13px;line-height:1.8;margin:22px 0 0;color:#806d56}#fang-auth-dialog button:disabled{opacity:.6;cursor:wait}
@keyframes auth-enter{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@media(prefers-reduced-motion:reduce){#fang-auth-dialog[open]{animation:none}}
@media(max-width:700px){header{flex-wrap:wrap;height:auto;min-height:88px;gap:12px;padding:12px 16px}header .brand{font-size:17px}header .header-right{margin-left:auto;gap:7px;flex-wrap:wrap}header #motion-toggle{display:none}header>nav{order:3;width:100%;justify-content:center;gap:18px;padding-top:4px}#cloud-account{max-width:none;gap:6px}#cloud-account .account-login,#cloud-account .account-register{padding:8px 11px;font-size:13px}#fang-auth-dialog{padding:26px 22px}#fang-auth-dialog h2{font-size:26px}}