/* Student home + student/parent login landing (home-v2) */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.landing-gear{position:fixed;top:18px;right:22px;z-index:30;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.42);border:1px solid rgba(255,255,255,.7);color:#3b3f78;box-shadow:0 6px 18px #3b2f8820;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.landing-gear:hover{background:rgba(255,255,255,.7)}
.landing-gear svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.landing-logo{margin:0;font-family:'Arial Black','Arial',sans-serif;font-weight:900;letter-spacing:.04em;line-height:1;font-size:clamp(56px,8vw,92px);background:linear-gradient(90deg,#ff7ab6 0%,#ff9a3c 28%,#ffd24a 52%,#5ee0c8 78%,#6aa8ff 100%);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 3px 0 rgba(255,255,255,.45))}
.landing-sub{margin:10px 0 0;font-size:clamp(16px,2vw,22px);font-weight:700;color:#2a2f66;text-shadow:0 1px 0 #fff8}
.landing-cta{display:inline-flex;align-items:center;justify-content:center;min-height:58px;padding:12px 36px;border:0;border-radius:999px;background:#ffd24a;color:#2a2550;font:700 20px/1.3 'Microsoft YaHei','PingFang SC',sans-serif;box-shadow:0 8px 0 #e0b01f,0 12px 24px #c9892033;text-decoration:none;cursor:pointer}
.landing-cta:hover{filter:brightness(1.03);transform:translateY(-1px)}
.landing-cta:active{transform:translateY(2px);box-shadow:0 4px 0 #e0b01f,0 8px 16px #c9892033}
a.landing-cta{color:#2a2550}

/* Homepage */
body.student-home{margin:0;min-height:100dvh;background:#8ec7ff}
body.student-home .student-main{max-width:none;margin:0;padding:0;min-height:100dvh}
body.student-home .topbar,body.student-home footer,body.student-home #status,body.student-home #retry-page{display:none}
.landing-home{min-height:100dvh;box-sizing:border-box;display:flex;align-items:center;justify-content:center;padding:48px 24px 40px;background:#8ec7ff url('/static/student-art/home-v2-bg.jpg') center/cover no-repeat;text-align:center}
.landing-hero{width:min(920px,100%);display:flex;flex-direction:column;align-items:center;gap:22px}
.landing-pills{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.landing-pills li{padding:8px 18px;border-radius:999px;background:rgba(255,255,255,.55);border:1px solid rgba(255,255,255,.8);color:#3a3f7a;font-size:15px;font-weight:700;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:0 4px 14px #3b2f8814}
.landing-subjects{width:100%;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:6px}
a.landing-subject{display:block;text-decoration:none;color:#2a2550;padding:22px 16px 20px;border-radius:22px;background:rgba(255,255,255,.42);border:1px solid rgba(255,255,255,.75);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 10px 28px #3b2f8818;transition:transform .15s,background .15s}
a.landing-subject:hover{background:rgba(255,255,255,.62);transform:translateY(-3px)}
.landing-subject h2{margin:0 0 8px;font-size:28px}
.landing-subject p{margin:0;font-size:15px;color:#4c5284;font-weight:600}
.landing-home .landing-cta{margin-top:8px;min-width:min(420px,100%);min-height:64px;font-size:22px}

/* Login shell (student + parent) */
.landing-login,.landing-shell{min-height:100dvh;box-sizing:border-box;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;padding:48px 20px 36px;background:#8ec7ff url('/static/student-art/home-v2-bg.jpg') center/cover no-repeat;text-align:center}
.landing-brand{display:flex;flex-direction:column;align-items:center}
.landing-card{width:min(440px,100%);text-align:left;padding:22px 24px 26px;border-radius:28px;background:rgba(255,255,255,.62);border:1px solid rgba(255,255,255,.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:0 16px 40px #3b2f8822}
.landing-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:0 0 20px;padding:5px;border-radius:999px;background:rgba(255,255,255,.45)}
a.landing-tab{display:flex;align-items:center;justify-content:center;min-height:42px;border-radius:999px;color:#4a5080;font-weight:700;text-decoration:none}
body.student-ui .landing-tabs:has(> .landing-tab:only-child){grid-template-columns:1fr;}
a.landing-tab.is-on,a.landing-tab[aria-current=page]{background:#fff;color:#2a2550;box-shadow:0 4px 12px #3b2f8818}
.landing-field{display:block;margin:0 0 14px;position:relative}
.landing-field input{width:100%;box-sizing:border-box;min-height:54px;padding:12px 16px;border:0;border-radius:16px;background:#fff;color:#2a2550;font:16px/1.5 'Microsoft YaHei','PingFang SC',sans-serif;box-shadow:inset 0 0 0 1px #e4e6f2}
.landing-pass input{padding-right:52px}
.landing-eye{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:42px;height:42px;min-height:42px;padding:0;border:0;border-radius:12px;background:transparent;color:#5a618c;cursor:pointer;box-shadow:none}
.landing-eye:hover{background:#f3f4fb}
.landing-eye svg{width:22px;height:22px;display:block;margin:auto;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.landing-remember{display:flex;align-items:center;gap:8px;margin:4px 0 16px;color:#3a3f7a;font-size:15px;font-weight:600}
.landing-remember input{width:18px;height:18px;min-height:18px;accent-color:#6a5cff}
.landing-card .landing-cta{width:100%;margin:4px 0 14px}
.landing-help{margin:0 0 6px;text-align:center;color:#4c5284;font-size:14px}

/* Override the previous two-column student login when landing is on */
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])){background:#8ec7ff}
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])) .student-top,
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])) .student-sticky,
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])) #student-entry,
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])) footer,
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])) .entry-note,
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])) .session-controls{display:none !important}
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])) .student-shell{max-width:none;margin:0;padding:0;min-height:100dvh;display:block}
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])) #entry-form-layout{display:flex;grid-template-columns:none;max-width:none;min-height:100dvh;gap:28px}
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])) #learning-login-panel{order:0;width:min(440px,100%);max-width:440px;margin:0 auto;padding:22px 24px 26px;background:rgba(255,255,255,.62);border:1px solid rgba(255,255,255,.85);box-shadow:0 16px 40px #3b2f8822;border-radius:28px}
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])) #learning-status:not([hidden]){position:fixed;top:16px;left:50%;transform:translateX(-50%);width:min(520px,90vw);z-index:40}
body.student-ui .landing-card input{padding-left:16px;background:#fff}
body.student-ui .landing-card .landing-cta{width:100%;height:auto;min-height:58px;background:#ffd24a;color:#2a2550}

/* Parent login only: hide portal chrome while the login card is visible */
body[data-page=parent]:has([data-login-box]:not([hidden])){margin:0;min-height:100dvh;background:#8ec7ff}
body[data-page=parent]:has([data-login-box]:not([hidden])) .pt-top{display:none}
body[data-page=parent]:has([data-login-box]:not([hidden])) .pt-main{max-width:none;margin:0;padding:0}
body[data-page=parent]:has([data-login-box]:not([hidden])) .pt-msg{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);z-index:40}

@media(max-width:800px){
  .landing-subjects{grid-template-columns:repeat(2,minmax(0,1fr));max-width:540px;gap:12px}
  a.landing-subject{padding:16px 8px}
  .landing-subject h2{font-size:24px}
  .landing-subject p{font-size:clamp(12px,3.4vw,15px)}
  .landing-home .landing-cta{min-width:0;width:100%;font-size:18px}
  .landing-logo{font-size:clamp(44px,14vw,72px)}
  .landing-pills li{font-size:13px;padding:7px 14px}
  .landing-gear{top:12px;right:12px}
}
@media(max-height:760px){
  .landing-home,.landing-login,.landing-shell{padding-top:36px;padding-bottom:24px;gap:16px}
  .landing-hero{gap:14px}
  .landing-subject{padding:16px 14px}
  .landing-subject h2{font-size:22px}
}

/* First-login onboarding */
.landing-onboard{min-height:100dvh;box-sizing:border-box;display:flex;flex-direction:column;align-items:center;padding:36px 20px 32px;background:#8ec7ff url('/static/student-art/home-v2-bg.jpg') center/cover no-repeat}
.onboard-title{margin:8px 0 0;font-size:clamp(22px,3vw,30px);color:#2a2550;text-shadow:0 1px 0 #fff8}
.onboard-steps{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:18px 0 22px;padding:0}
.onboard-steps li{padding:8px 16px;border-radius:999px;background:rgba(255,255,255,.45);color:#4a5080;font-weight:700;font-size:14px}
.onboard-steps li.is-on{background:#ffd24a;color:#2a2550}
.onboard-steps li.is-done{background:#fff;color:#2a2550}
.onboard-grid{width:min(860px,100%);display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,.8fr);gap:22px;align-items:start}
.onboard-form,.onboard-pick,.onboard-done{width:min(520px,100%);padding:22px;border-radius:28px;background:rgba(255,255,255,.66);border:1px solid rgba(255,255,255,.85);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 16px 40px #3b2f8822}
.onboard-field{display:block;margin:0 0 14px;color:#2a2550;font-weight:700}
.onboard-field input[type=text],.onboard-field input:not([type]),.onboard-field select{width:100%;box-sizing:border-box;margin-top:8px;min-height:48px;border:0;border-radius:14px;padding:10px 14px;background:#fff;font:16px/1.5 'Microsoft YaHei','PingFang SC',sans-serif}
.onboard-field label{display:inline-flex;align-items:center;gap:6px;margin:8px 12px 0 0;font-weight:600}
.onboard-carousel{padding:18px;border-radius:28px;background:rgba(255,255,255,.55);text-align:center;color:#3a3f7a;font-weight:700}
.onboard-thumbs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:12px}
.onboard-thumbs button{padding:6px;border-radius:50%;border:3px solid transparent;background:#fff;min-height:0;box-shadow:none}
.onboard-thumbs button.is-on{border-color:#ffd24a;box-shadow:0 0 0 3px #fff}
.onboard-thumbs img,.onboard-large{width:100%;border-radius:50%;display:block}
.onboard-large{width:min(240px,70vw);margin:0 auto 16px}
.onboard-pick,.onboard-done{text-align:center}
.onboard-hello{font-size:20px;font-weight:700;color:#2a2550}
.onboard-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:18px}
.onboard-form .landing-cta{width:100%;margin-top:8px}
body.student-ui:has(#student-profile-panel:not([hidden])){background:#8ec7ff}
body.student-ui:has(#student-profile-panel:not([hidden])) .student-top,
body.student-ui:has(#student-profile-panel:not([hidden])) .student-sticky,
body.student-ui:has(#student-profile-panel:not([hidden])) footer,
body.student-ui:has(#student-profile-panel:not([hidden])) .session-controls{display:none !important}
body.student-ui:has(#student-profile-panel:not([hidden])) .student-shell{max-width:none;margin:0;padding:0}
@media(max-width:800px){
  .onboard-grid{grid-template-columns:1fr}
  .onboard-thumbs{grid-template-columns:repeat(4,minmax(0,1fr))}
}

/* Step 2: choose avatar */
.onboard-pick{width:min(920px,100%);padding:22px 24px 24px}
.onboard-pick-title{margin:0 0 14px;text-align:center;font-size:24px;color:#2a2550}
.role-tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:0 0 18px}
.role-tab{min-height:42px;padding:8px 18px;border-radius:999px;border:0;background:rgba(255,255,255,.55);color:#3a3f7a;font-weight:700;box-shadow:none}
.role-tab.is-on{background:#ffd24a;color:#2a2550}
.onboard-pick-layout{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(180px,.7fr);gap:20px;align-items:center}
.onboard-avatar-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.onboard-avatar-grid button{padding:6px;border-radius:22px;border:3px solid transparent;background:#fff;min-height:0;box-shadow:none}
.onboard-avatar-grid button.is-on{border-color:#ffd24a;box-shadow:0 0 0 3px #fff}
.onboard-avatar-grid img{width:100%;border-radius:16px;display:block}
.onboard-preview{text-align:center;color:#3a3f7a;font-weight:700}
.onboard-preview .onboard-large{width:min(220px,100%)}

/* Shared student visual language */
body.student-ui{background:#8ec7ff url('/static/student-art/home-v2-bg.jpg') center/cover fixed no-repeat !important}
body.student-ui .panel{background:rgba(255,255,255,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.8)}
body.student-ui .student-top,body.student-ui .student-sticky{background:rgba(255,255,255,.55);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
body.student-ui button:not(.secondary):not(.text-button):not(.landing-eye):not(.role-tab):not([data-avatar]):not(.session-controls button){background:#ffd24a;color:#2a2550}
body.student-ui button.landing-eye{background:transparent;color:#5a618c;box-shadow:none}
body.student-ui button.role-tab{background:rgba(255,255,255,.55);color:#3a3f7a;box-shadow:none}
body.student-ui button.role-tab.is-on{background:#ffd24a;color:#2a2550}
body.student-ui .onboard-thumbs button,body.student-ui .onboard-avatar-grid button{background:#fff;color:inherit;box-shadow:none}
body.student-ui::after{content:'';position:fixed;left:10px;bottom:86px;width:86px;height:110px;background:url('/static/student-art/mascot-robot.jpg') center/contain no-repeat;pointer-events:none;z-index:12;filter:drop-shadow(0 8px 16px #3b2f8830)}
body.student-ui:has(#entry-form-layout.landing-login:not([hidden]))::after,
body.student-ui:has(#student-profile-panel:not([hidden]))::after{display:none}
.onboard-field label{white-space:nowrap;flex-direction:row;width:auto}
fieldset.onboard-field{min-width:0}
.landing-onboard{padding:28px 20px 24px}
.onboard-steps{margin:12px 0 16px}
.onboard-field{margin:0 0 10px}
@media(max-width:800px){
  .onboard-pick-layout{grid-template-columns:1fr}
  .onboard-avatar-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
  body.student-ui::after{width:64px;height:82px;bottom:78px}
}


/* First-use onboard compactness + later edit link */
fieldset.onboard-field{border:0;padding:0;margin:0 0 10px;min-width:0}
fieldset.onboard-field legend{padding:0;float:none}
.landing-onboard .landing-logo{font-size:44px}
.landing-onboard{padding:16px 20px 20px}
.onboard-form{padding:16px 18px}
.onboard-form .landing-cta{margin-top:6px}
#profile-cancel{display:block;width:100%;margin-top:10px;background:transparent;border:0;box-shadow:none;color:#4a5080}
#profile-cancel[hidden]{display:none}
.profile-edit-link{background:none;border:0;box-shadow:none;color:#4a5080;font-size:14px;font-weight:700;min-height:36px;padding:4px 10px;cursor:pointer;text-decoration:underline}
body.student-ui button.profile-edit-link{background:none;color:#4a5080;min-height:36px;padding:4px 10px;box-shadow:none;border:0}
body.student-ui button.landing-eye{min-height:42px;width:42px;height:42px;padding:0;border:0;border-radius:12px;background:transparent;color:#5a618c;box-shadow:none}
body.student-ui button.landing-eye:hover{background:#f3f4fb}
body.student-ui:has(#entry-form-layout.landing-login:not([hidden])) #learning-login-panel{overflow:visible;height:auto;max-height:none}
body.student-ui #learning-login-panel .landing-help{display:block;max-width:none}
body.student-ui #learning-login-panel label.landing-field,
body.student-ui #learning-login-panel label.landing-remember{margin:0 0 12px}
body.student-ui #learning-login-panel .landing-field input{min-height:54px;padding-left:16px;padding-right:52px}

/* ===== V2.1 student studio (04) and topic page (05) ===== */
body.student-ui:has(#studio-home:not([hidden])) .student-top,
body.student-ui:has(#studio-home:not([hidden])) .student-sticky,
body.student-ui:has(#studio-home:not([hidden])) footer{display:none !important}
body.student-ui:has(#studio-home:not([hidden])) .student-shell{max-width:none;margin:0;padding:0}
body.student-ui[data-mode=topic] .student-top,
body.student-ui[data-mode=topic] .student-sticky,
body.student-ui[data-mode=topic] #lesson-context,
body.student-ui[data-mode=topic] #lesson-media-note{display:none !important}
body.student-ui[data-mode=topic]{margin:0;background:#8ec7ff}
body.student-ui[data-mode=topic] .student-shell{max-width:none;margin:0;padding:0;min-height:100dvh}

.studio-home{min-height:100dvh;box-sizing:border-box;padding:22px 24px 36px;background:#8ec7ff url('/static/student-art/home-v2-bg.jpg') center/cover no-repeat;color:#2a2550}
.studio-top{display:flex;justify-content:space-between;align-items:center;gap:16px}
.studio-brand strong{display:block;font-family:'Arial Black',Arial,sans-serif;font-size:clamp(28px,4vw,40px);letter-spacing:.04em;background:linear-gradient(90deg,#ff7ab6,#ff9a3c,#ffd24a,#5ee0c8,#6aa8ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.studio-brand span{font-size:13px;font-weight:700;color:#3a3f7a}
.studio-avatar{display:flex;align-items:center;gap:10px;border:0;background:rgba(255,255,255,.55);padding:6px 14px 6px 6px;border-radius:999px;box-shadow:0 8px 20px #3b2f8814;cursor:pointer}
.studio-avatar img{width:48px;height:48px;border-radius:50%;object-fit:cover}
.studio-avatar b{display:block;font-size:16px}
.studio-avatar small{color:#5a618c;font-size:12px}
.studio-hero{display:flex;flex-direction:column;align-items:center;text-align:center;padding-top:18px}
.studio-mascot{width:min(180px,38vw);filter:drop-shadow(0 10px 18px #3b2f8833)}
.studio-hero h1{margin:8px 0 18px;font-size:clamp(36px,6vw,56px);color:#fff;text-shadow:0 4px 0 #5a4ad0,0 10px 24px #3b2f8866}
.studio-subject-row{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;margin-bottom:16px}
.studio-subject{pointer-events:none;user-select:none;min-width:140px;padding:18px 22px;border-radius:22px;background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.9);box-shadow:0 10px 24px #3b2f8818;font-size:22px;font-weight:800}
.studio-subject span{display:block;font-size:32px;margin-bottom:6px}
.studio-today-card{width:min(100%,540px);box-sizing:border-box;padding:18px 24px;margin:4px 0 12px;border-radius:24px;background:#f7f5ff;color:#292451}
.studio-today-label{margin:0;color:#5a49b9;font-size:14px;font-weight:750}
.studio-today{margin:7px 0 12px;font-size:clamp(21px,4vw,28px);line-height:1.25}
.studio-today-card [hidden]{display:none!important}
.studio-home .landing-cta{min-width:min(420px,92vw);min-height:64px;font-size:22px}
.studio-today-card .landing-cta{min-width:0;min-height:48px;max-width:100%;font-size:18px;white-space:normal}
.studio-today-card:has(#studio-today-cover:not([hidden])){display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:14px;align-items:center;text-align:left}
#studio-today-cover{width:100%;aspect-ratio:1;object-fit:cover;border-radius:14px;background:#eae3fc}
.studio-today-card .studio-wait{grid-column:1/-1}
.studio-today-card #studio-classroom-picker{display:block;margin:0 0 14px;text-align:left}
.studio-today-card #studio-classroom-choice{display:block;width:100%;min-height:44px;margin-top:4px}
.studio-art-home{background:#e9e1fa}
body.student-ui:has(.studio-art-home:not([hidden]))::before,
body.student-ui:has(.studio-art-home:not([hidden]))::after{content:none}
.studio-art-home .studio-brand strong{background:none;color:#392772}
.studio-art-home .studio-hero{padding-top:clamp(20px,8vh,82px)}
.studio-art-home .studio-hero h1{color:#282351;text-shadow:none;font-size:clamp(27px,5vw,42px)}
.studio-art-home :is(.studio-mascot,.studio-subject-row){display:none}
.studio-home .landing-cta:disabled{opacity:.55;cursor:not-allowed;transform:none}
.studio-extra{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;margin-top:22px}
.studio-chip{display:flex;align-items:center;gap:10px;min-width:220px;padding:14px 18px;border-radius:20px;background:rgba(255,255,255,.7);text-decoration:none;color:#2a2550;box-shadow:0 8px 20px #3b2f8814}
.studio-chip span{font-size:26px}
.studio-chip b{display:block}
.studio-chip small{color:#5a618c}

.studio-topic{min-height:100dvh;box-sizing:border-box;padding:20px 24px 40px;background:#8ec7ff url('/static/student-art/home-v2-bg.jpg') center/cover no-repeat}
.studio-back{display:inline-flex;align-items:center;color:#2a2550;font-weight:700;text-decoration:none;background:rgba(255,255,255,.55);padding:8px 14px;border-radius:999px;margin-bottom:14px}
.studio-steps{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:8px auto 22px;max-width:860px}
.studio-steps span{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;background:rgba(255,255,255,.42);color:#4a5080;font-weight:700}
.studio-steps span.is-on{background:#ffd24a;color:#2a2550;box-shadow:0 6px 0 #e0b01f}
.studio-steps i{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:#fff;font-style:normal;font-size:13px}
.studio-lesson-card{max-width:920px;margin:0 auto;padding:28px 28px 22px;border-radius:28px;background:rgba(255,255,255,.78);box-shadow:0 16px 40px #3b2f8822}
.studio-unit{margin:0 0 8px;color:#5a618c;font-weight:700}
.studio-lesson-body{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:center}
.studio-lesson-card h1{margin:0 0 10px;font-size:clamp(28px,4vw,42px);line-height:1.25}
.studio-intro{margin:0 0 16px;font-size:18px;color:#3a3f7a;font-weight:600}
.studio-subjects{display:flex;gap:8px;flex-wrap:wrap}
.studio-subjects span{padding:6px 12px;border-radius:999px;background:#eef1ff;color:#4a5080;font-weight:700;font-size:14px}
.studio-subjects span.is-on{background:#ffe08a;color:#2a2550}
.studio-hero-art{width:100%;max-height:220px;object-fit:contain}
.studio-pills{max-width:920px;margin:16px auto 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.studio-pills p{margin:0;padding:14px 16px;border-radius:18px;background:rgba(255,255,255,.75);box-shadow:0 8px 18px #3b2f8810}
.studio-pills span{display:block;font-size:13px;color:#5a618c;font-weight:700}
.studio-pills b{display:block;margin-top:4px;font-size:16px}
.studio-listen{display:flex;width:min(360px,92vw);margin:22px auto 0}
@media(max-width:800px){
  .studio-lesson-body,.studio-pills{grid-template-columns:1fr}
  .studio-subject{min-width:28vw}
  .studio-hero h1{font-size:34px}
}

.studio-wait{margin:14px auto 0;max-width:min(560px,92vw);padding:16px 22px;border-radius:20px;background:rgba(255,243,196,.96);color:#7a2410;font:800 24px/1.45 "Microsoft YaHei",system-ui,sans-serif;box-shadow:0 10px 24px #3b2f8822}
.studio-wait[hidden]{display:none}

/* 独立家长登录视觉：仅作用于家长页，不影响学生端。 */
body[data-page="parent"] .landing-shell[data-login-box][hidden]{display:none !important;}
body[data-page="parent"] .parent-login-shell{background:#8ec7ff url('/static/student-art/home-v2-bg.jpg') center/cover no-repeat;}
body[data-page="parent"] .parent-login-card{max-width:520px;padding:34px 38px 30px;}
.parent-login-heading{display:flex;flex-direction:column;align-items:center;gap:10px;margin:0 0 24px;color:#262d66;text-align:center;}
.parent-login-heading h1{margin:0;font-size:30px;line-height:1.25;letter-spacing:.04em;}
.parent-login-heading p{margin:0;color:#626782;font-size:16px;}
.parent-login-mark{display:grid;place-items:center;width:64px;height:64px;border-radius:20px;background:linear-gradient(145deg,#a78bfa,#60a5fa);box-shadow:0 8px 18px #667eea33;font-size:29px;}
/* test */
/* Unified identity heading for student and parent login */
.landing-tabs a.landing-tab{gap:10px}
.landing-role-icon{font-size:25px;line-height:1}
.parent-login-heading{text-align:center;margin:0 0 18px;color:#2a2550}
.parent-login-heading h1{margin:6px 0 2px;font-size:26px}
.parent-login-heading p{margin:0;color:#4c5284;font-size:14px}
.parent-login-mark{display:block;font-size:38px;line-height:1}
/* Identity icon badges */
.landing-tabs .landing-role-icon{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;background:#fff4c7;font-size:20px}
.parent-login-mark{width:64px;height:64px;margin:0 auto;border-radius:20px;background:#ddf8eb;display:flex;align-items:center;justify-content:center;font-size:32px}
/* Shared login card geometry: all four role pages use the same viewport scale and box model. */
html:has(.ariuvo-login-card){zoom:1!important}
.ariuvo-login-card{box-sizing:border-box!important;width:440px!important;height:560px!important;min-width:440px!important;min-height:560px!important;max-width:440px!important;max-height:560px!important;margin:0!important;border-radius:28px!important;border:1px solid rgba(255,255,255,.88)!important;background:rgba(255,255,255,.64)!important;box-shadow:0 16px 40px #3b2f8822!important;overflow:hidden!important;display:flex!important;flex-direction:column!important}
.ariuvo-login-card form{flex:1;min-height:0}
@media(max-width:520px){.ariuvo-login-card{width:calc(100vw - 32px)!important;min-width:0!important;max-width:calc(100vw - 32px)!important}}
/* Keep the card center and scrollbar geometry identical across all four login routes. */
html:has(.ariuvo-login-card){overflow-y:scroll!important}
body:has(.ariuvo-login-card){min-height:100dvh!important;overflow-y:scroll!important}
.ariuvo-login-card{position:fixed!important;left:50%!important;top:50%!important;transform:translate(-50%,-50%)!important}
/* Parent content is denser, while retaining the shared fixed card geometry. */
.parent-login-card{padding:18px 24px 20px!important}.parent-login-card .parent-login-heading{margin-bottom:10px}.parent-login-card .parent-login-mark{width:52px;height:52px;font-size:28px}.parent-login-card .parent-login-heading h1{font-size:24px;margin:4px 0 0}.parent-login-card .landing-field{margin-bottom:8px}.parent-login-card .landing-remember{margin:2px 0 10px}.parent-login-card .landing-card .landing-cta,.parent-login-card .landing-cta{min-height:52px;margin:2px 0 8px}.parent-login-card .landing-help{font-size:12px;margin-bottom:2px}
/* Internal typography and spacing shared by all four fixed login cards. */
.ariuvo-login-card{font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",sans-serif;color:#2a2550;padding:24px 28px!important}
.ariuvo-login-card h1,.ariuvo-login-card .landing-tab{font-size:24px!important;font-weight:700;line-height:1.25}
.ariuvo-login-card .parent-login-heading h1,.ariuvo-login-card .teacher-role-heading h1,.ariuvo-login-card .portal-role-heading h1{font-size:24px!important;line-height:1.25;margin:6px 0 4px}
.ariuvo-login-card .parent-login-heading p,.ariuvo-login-card .teacher-role-heading p,.ariuvo-login-card .portal-role-heading p,.ariuvo-login-card .landing-help{font-size:13px!important;line-height:1.45}
.ariuvo-login-card .landing-role-icon,.ariuvo-login-card .parent-login-mark,.ariuvo-login-card .teacher-role-icon,.ariuvo-login-card .portal-role-icon{font-size:28px!important}
.ariuvo-login-card form{display:flex!important;flex-direction:column!important;gap:10px!important;padding:0!important}
.ariuvo-login-card label{font-size:14px!important;line-height:1.35;font-weight:600}
.ariuvo-login-card .landing-field{margin:0!important}
.ariuvo-login-card input{height:54px!important;min-height:54px!important;box-sizing:border-box;font-size:16px!important;line-height:1.4}
.ariuvo-login-card .landing-remember{font-size:14px!important;line-height:1.35;margin:0!important}
.ariuvo-login-card button[type=submit],.ariuvo-login-card .landing-cta,.ariuvo-login-card form>button{height:60px!important;min-height:60px!important;box-sizing:border-box;font-size:18px!important;font-weight:700!important}
.ariuvo-login-card .landing-help{margin:0!important;text-align:center}
.ariuvo-login-card .landing-tabs{margin:0 0 18px!important;min-height:44px}
.ariuvo-login-card .parent-login-heading,.ariuvo-login-card .teacher-role-heading,.ariuvo-login-card .portal-role-heading{margin:0 0 16px!important;text-align:center}
.ariuvo-login-card .teacher-role-icon,.ariuvo-login-card .portal-role-icon{width:52px;height:52px;margin:0 auto}
.ariuvo-login-card .parent-login-mark{width:52px;height:52px;margin:0 auto}
/* Student heading matches the icon-title-description pattern used by the other roles. */
.student-login-heading{text-align:center;margin:0 0 16px;color:#2a2550}.student-login-heading h1{font-size:24px;font-weight:700;line-height:1.25;margin:6px 0 4px}.student-login-heading p{font-size:13px;line-height:1.45;margin:0;color:#4c5284}.student-login-mark{width:52px;height:52px;margin:0 auto;border-radius:20px;background:#fff4c7;display:flex;align-items:center;justify-content:center;font-size:28px}