@media (prefers-color-scheme: light) {
  :root{color-scheme:light;--bg:#f5f8f2;--panel:#fff;--panel2:#edf3e9;--line:#cbd9c9;--green:#3c7118;--green2:#639934;--muted:#536554;--white:#172618}
  body{background:#e5eee2;color:var(--white)}
  .phone{border-color:#c8d8c4;box-shadow:0 25px 70px #25402124}
  .brandmark,.gate-open,.primary,.login-submit,.toast,.video-placeholder .play,.exercise-demo-empty .play,.demo-load .play{background:#a8f05a;color:#111510}
  .avatar,.bigavatar,.student-avatar,.machine,.demo-icon,.placeholder .icon{background:#e2efd8;color:var(--green)}
  .hero,.bill-card{background:linear-gradient(135deg,#e4f2d7,#f8fcf5 75%);border-color:#bdd4ad}
  .hero p,.bill-card>p,.stat span{color:#435b43}
  .hero:after{border-color:#4b862b28;box-shadow:0 0 0 20px #4b862b0b,0 0 0 42px #4b862b08}
  .pill,.good{background:#e0efda;color:#2f651b}
  .exercise.done .check{background:#a8f05a;border-color:#83c83d;color:#111510}
  .exercise.done .exinfo b{color:#607260}
  .note,.team-tip,.payment-choice.active,.login-role.active,.demo-video-option[aria-pressed="true"]{background:#e9f3e2;color:var(--white);border-color:#bbd2ad}
  .note,.team-tip{color:#415a42}.note strong{color:var(--green)}
  .howto,.demo-box,.video-placeholder,.placeholder,.photo-picker,.demo-video-option,.exercise-demo-empty,.demo-load{background:#f8fbf6;border-color:var(--line)}
  .demo-box strong,.video-placeholder b,.exercise-demo-empty b{color:var(--white)}
  .field,.login-field{color:#344735}
  .field input,.field textarea,.field select,.extra-edit input,.login-field>input,.password-wrap input,.demo-video-option{background:#fff;color:var(--white);color-scheme:light}
  .field input::placeholder,.login-field input::placeholder{color:#718272}
  .remove-extra,.staff-quick button>span{background:#e5f1dd;color:var(--green)}
  .login-screen,.staff-screen,.blocked-screen{background:var(--bg)}
  .login-lock{background:#e5f1dc;border-color:#bdd1b3;color:var(--green)}
  .login-roles{background:#edf4e9}.login-role.active{color:#275a15}
  .login-footer{color:#627463}
  .staff-nav,.student-payment-actions,.bottom,.bottomnav,.bottom-nav{background:#f8fbf6;border-color:var(--line)}
  .staff-navbtn,.navbtn{color:#556a56}.staff-navbtn.active,.navbtn.active{color:var(--green)}
  .staff-quick button,.staff-search,.payment-choice,.blocked-method{background:#fff;color:var(--white)}
  .staff-search input{color:var(--white)}
  .gate-prompt-card{background:linear-gradient(155deg,#e9f4e3,#fff);border-color:#bed4b2;box-shadow:0 18px 45px #25402124}
  .day-chip,.day-chip.today,.day-chip.selected,.machine-photo{background:linear-gradient(155deg,#e9f3e3,#fff);border-color:var(--line);color:var(--white)}
  .day-chip.today em,.day-chip.has-workout span{color:#426543}
  .student-open:hover,.demo-load:hover{background:#e9f3e2}
  .demo-load{color:var(--white)}
  .gate-prompt{background:#17301880}
  .student-detail-modal{background:#17301880}
  .login-error{background:#fff1ef;color:#ad3029!important;border-color:#e7aaa5}
  .video-frame,.exercise-demo-stage,.exercise-demo-player{background:#eaf0e8}
}