:root{
      --ink:#151829;--ink-2:#20243a;--gold:#b88a32;--gold-2:#e2bd6c;--gold-soft:#fff8e9;
      --paper:#fff;--bg:#f4f5f8;--soft:#7b7f8e;--line:rgba(21,24,41,.09);--line-strong:rgba(21,24,41,.14);
      --sidebar:#171a2a;--green:#2f8b68;--red:#c75454;--orange:#b8742d;--blue:#4f6fa6;
      --shadow:0 16px 44px rgba(20,24,44,.075);--shadow-strong:0 24px 60px rgba(20,24,44,.12);
      --sidebar-w:284px;--topbar-h:78px;--mobile-nav-h:82px;
    }
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;min-height:100vh;overflow-x:hidden;color:var(--ink);background:var(--bg);font-family:Manrope,Arial,sans-serif;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}
    a{color:inherit}button,input,select,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}
    svg{display:block;width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

    /* Layout */
    .app{min-height:100vh}.sidebar{position:fixed;z-index:1200;inset:0 auto 0 0;display:flex;flex-direction:column;width:var(--sidebar-w);color:#f6f7fb;background:radial-gradient(circle at 0 0,rgba(226,189,108,.08),transparent 32%),var(--sidebar);border-right:1px solid rgba(255,255,255,.07);overflow-y:auto}
    .sidebar__head{display:flex;align-items:center;height:78px;padding:0 22px;border-bottom:1px solid rgba(255,255,255,.07)}
    .brand{display:inline-flex;align-items:center;text-decoration:none;color:#d4ae45;font-family:Georgia,"Times New Roman",serif;font-size:31px;font-style:italic;font-weight:700;letter-spacing:-1.4px;text-shadow:0 2px 14px rgba(226,189,108,.12)}
    .sidebar__context{display:flex;align-items:center;gap:12px;margin:20px 18px 10px;padding:14px;border:1px solid rgba(255,255,255,.08);border-radius:17px;background:rgba(255,255,255,.045)}
    .avatar{display:grid;place-items:center;flex:0 0 42px;width:42px;height:42px;border-radius:13px;color:var(--ink);background:linear-gradient(135deg,var(--gold-2),#b8862d);font-size:14px;font-weight:900}.sidebar__context-copy{min-width:0}
    .sidebar__context-copy strong,.sidebar__context-copy span{display:block}.sidebar__context-copy strong{overflow:hidden;color:#fff;font-size:14px;text-overflow:ellipsis;white-space:nowrap}.sidebar__context-copy span{margin-top:3px;color:#9da2b2;font-size:14px}
    .menu{padding:8px 14px 16px}.menu__caption{margin:14px 12px 8px;color:#777d90;font-size:14px;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.menu__caption--space{margin-top:22px}
    .menu__link{position:relative;display:flex;align-items:center;gap:12px;min-height:48px;margin:3px 0;padding:9px 12px;border-radius:13px;color:#b9bdca;text-decoration:none;font-size:14px;font-weight:700;transition:.2s ease}.menu__link:hover{color:#fff;background:rgba(255,255,255,.06);transform:translateX(2px)}.menu__link.active{color:#fff;background:linear-gradient(90deg,rgba(226,189,108,.16),rgba(226,189,108,.06))}.menu__link.active::before{content:"";position:absolute;top:9px;bottom:9px;left:0;width:3px;border-radius:3px;background:var(--gold-2)}
    .menu__icon{display:grid;place-items:center;flex:0 0 30px;width:30px;height:30px;border-radius:9px;color:#aeb3c2;background:rgba(255,255,255,.055)}.menu__icon svg{width:17px;height:17px}.menu__link.active .menu__icon,.menu__link:hover .menu__icon{color:var(--gold-2);background:rgba(226,189,108,.1)}.sidebar__footer{margin-top:auto;padding:10px 14px 18px;border-top:1px solid rgba(255,255,255,.07)}
    .workspace{min-height:100vh;margin-left:var(--sidebar-w)}
    .topbar{position:sticky;z-index:1000;top:0;display:flex;align-items:center;justify-content:space-between;min-height:var(--topbar-h);padding:0 34px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.94);box-shadow:0 8px 25px rgba(20,24,44,.025);backdrop-filter:blur(18px)}
    .topbar__mobile-brand{display:none}.topbar__title span,.topbar__title strong{display:block}.topbar__title span{margin-bottom:2px;color:var(--soft);font-size:14px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.topbar__title strong{font-size:14px}.topbar__actions{display:flex;align-items:center;gap:10px}
    .language{display:flex;gap:3px;padding:3px;border:1px solid var(--line);border-radius:12px;background:#fafafa}.language button{min-width:50px;height:36px;padding:0 10px;border:0;border-radius:9px;color:#7d8291;background:transparent;font-size:14px;font-weight:800;cursor:pointer}.language button.active{color:var(--ink);background:var(--gold-2)}
    .profile{position:relative}.profile__button{display:flex;align-items:center;gap:10px;min-height:48px;padding:4px 8px 4px 5px;border:1px solid transparent;border-radius:14px;color:inherit;background:transparent;cursor:pointer}.profile__button:hover,.profile.open .profile__button{border-color:var(--line);background:#f8f8f6}.profile__avatar{display:grid;place-items:center;flex:0 0 38px;width:38px;height:38px;border-radius:12px;color:var(--ink);background:linear-gradient(135deg,var(--gold-2),#c39038);font-size:14px;font-weight:900}.profile__copy strong,.profile__copy small{display:block;max-width:170px;overflow:hidden;text-align:left;text-overflow:ellipsis;white-space:nowrap}.profile__copy strong{font-size:14px}.profile__copy small{margin-top:2px;color:var(--soft);font-size:14px}.profile__chevron{width:15px!important;height:15px!important;color:#9296a3;transition:.2s}.profile.open .profile__chevron{transform:rotate(180deg)}
    .profile__menu{position:absolute;top:calc(100% + 10px);right:0;width:210px;padding:8px;border:1px solid var(--line);border-radius:15px;background:#fff;box-shadow:var(--shadow-strong);opacity:0;visibility:hidden;transform:translateY(-8px);transition:.18s ease}.profile.open .profile__menu{opacity:1;visibility:visible;transform:none}.profile__menu a{display:block;padding:10px 11px;border-radius:9px;color:#4f5364;text-decoration:none;font-size:14px;font-weight:700}.profile__menu a:hover{background:#f6f5f1}

    /* Main */
    .main{width:min(100%,1680px);margin:0 auto;padding:34px 36px 110px}.intro{display:flex;align-items:flex-start;justify-content:space-between;gap:28px;margin-bottom:24px}.intro__eyebrow{margin:0 0 7px;color:var(--gold);font-size:14px;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.intro h1{margin:0;font-size:clamp(30px,3.4vw,46px);line-height:1.08;letter-spacing:-.04em}.intro h1 span{color:var(--gold)}.intro__lead{max-width:760px;margin:10px 0 0;color:var(--soft);font-size:14px}.date-card{display:flex;align-items:center;gap:11px;min-width:250px;padding:12px 14px;border:1px solid var(--line);border-radius:15px;background:#fff;box-shadow:0 10px 28px rgba(20,24,44,.035)}.date-card__icon{display:grid;place-items:center;flex:0 0 40px;width:40px;height:40px;border-radius:12px;color:#8b651f;background:rgba(226,189,108,.18)}.date-card small,.date-card strong{display:block;font-size:14px}.date-card small{color:var(--soft)}.date-card strong{margin-top:2px}

    /* Summary */
    .summary-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:18px}.summary-card{display:flex;align-items:center;gap:14px;min-width:0;padding:18px;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow)}.summary-card__icon{display:grid;place-items:center;flex:0 0 46px;width:46px;height:46px;border-radius:14px;color:#8c671f;background:#f7ecd2}.summary-card__icon.green{color:#26734a;background:#eaf7ef}.summary-card__icon.blue{color:#49658d;background:#edf2fa}.summary-card__icon.orange{color:#9a642b;background:#fff0df}.summary-card__copy{min-width:0}.summary-card strong,.summary-card span{display:block}.summary-card strong{font-size:24px;line-height:1.05;letter-spacing:-.025em}.summary-card span{margin-top:5px;color:var(--soft);font-size:14px;font-weight:700}

    /* Toolbar */
    .toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px;padding:12px;border:1px solid var(--line);border-radius:19px;background:#fff;box-shadow:0 10px 28px rgba(20,24,44,.035)}.search{position:relative;flex:1;max-width:520px}.search svg{position:absolute;left:14px;top:50%;width:19px;height:19px;color:#8b8f9e;transform:translateY(-50%)}.search input{width:100%;height:46px;padding:0 14px 0 43px;border:1px solid #dfe2e8;border-radius:13px;background:#fafbfc;color:var(--ink);font-size:14px;outline:0}.search input:focus{border-color:#c9a758;background:#fff;box-shadow:0 0 0 3px rgba(198,161,79,.11)}.toolbar__filters{display:flex;align-items:center;gap:9px}.filter-select{height:46px;min-width:170px;padding:0 36px 0 12px;border:1px solid #dfe2e8;border-radius:13px;background:#fff;color:#505567;font-size:14px;font-weight:700;outline:0}

    /* Group cards */
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin:0 0 14px}.section-head h2{margin:0;font-size:22px;line-height:1.25}.section-head p{margin:5px 0 0;color:var(--soft);font-size:14px}.section-head__count{color:#777c8c;font-size:14px;font-weight:700}
    .groups-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:18px}.group-card{position:relative;min-width:0;padding:21px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow);cursor:pointer;transition:.22s ease}.group-card:hover{transform:translateY(-3px);border-color:rgba(184,138,50,.28);box-shadow:var(--shadow-strong)}.group-card.active{border-color:#d7b866;background:linear-gradient(145deg,#fffdf9,#fff9ed);box-shadow:0 18px 45px rgba(184,138,50,.11)}.group-card__top{display:flex;align-items:flex-start;justify-content:space-between;gap:15px}.group-card__identity{display:flex;align-items:center;gap:13px;min-width:0}.group-badge{display:grid;place-items:center;flex:0 0 52px;width:52px;height:52px;border-radius:16px;color:#171a2a;background:linear-gradient(135deg,var(--gold-2),#c08d32);font-size:16px;font-weight:900;box-shadow:0 9px 20px rgba(184,138,50,.18)}.group-card h3{margin:0;font-size:20px;line-height:1.2}.group-card__subtitle{margin:5px 0 0;color:var(--soft);font-size:14px}.group-chip{display:inline-flex;align-items:center;min-height:31px;padding:5px 10px;border-radius:999px;color:#656a7b;background:#f2f3f5;font-size:14px;font-weight:800;white-space:nowrap}.group-chip.curator{color:#7d5c1e;background:#fff1cc}.group-card__subject{margin:16px 0 0;padding:12px 13px;border:1px solid #e9e9ec;border-radius:14px;background:#fafafa}.group-card__subject small,.group-card__subject strong{display:block;font-size:14px}.group-card__subject small{margin-bottom:3px;color:#9296a5}.group-card__subject strong{line-height:1.4}
    .metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:14px}.metric{min-width:0;padding:11px;border:1px solid #eceef2;border-radius:13px;background:#fbfbfc}.metric span,.metric strong{display:block}.metric span{color:#8b8f9e;font-size:14px}.metric strong{margin-top:4px;font-size:18px;line-height:1}.metric strong.good{color:var(--green)}.metric strong.warn{color:var(--orange)}
    .group-alert{display:flex;align-items:flex-start;gap:9px;margin-top:12px;padding:10px 11px;border-radius:12px;color:#8f5e29;background:#fff4e7;font-size:14px;line-height:1.45}.group-alert svg{flex:0 0 18px;width:18px;height:18px;margin-top:1px}.group-alert.ok{color:#2d704f;background:#edf8f1}
    .group-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:14px}.action-btn{display:flex;align-items:center;justify-content:center;gap:7px;min-height:42px;padding:0 10px;border:1px solid #dfe2e8;border-radius:12px;color:#5b6071;background:#fff;text-decoration:none;font-size:14px;font-weight:800;cursor:pointer}.action-btn:hover{border-color:#d4b76d;color:#8b641e;background:#fffaf0}.action-btn.primary{border-color:#d6ad50;color:#7d5917;background:#fff7e3}

    /* Selected group */
    .detail-panel{padding:22px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}.detail-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding-bottom:17px;border-bottom:1px solid #eceef2}.detail-head__identity{display:flex;align-items:center;gap:13px}.detail-head h2{margin:0;font-size:22px}.detail-head p{margin:5px 0 0;color:var(--soft);font-size:14px}.detail-head__actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.detail-tabs{display:flex;gap:6px;margin:17px 0 14px;padding:4px;border:1px solid #e7e9ed;border-radius:14px;background:#f7f8fa;width:max-content;max-width:100%;overflow-x:auto}.detail-tab{min-height:39px;padding:0 14px;border:0;border-radius:10px;color:#74798a;background:transparent;font-size:14px;font-weight:800;cursor:pointer;white-space:nowrap}.detail-tab.active{color:#765718;background:#fff;box-shadow:0 5px 14px rgba(20,24,44,.06)}
    .detail-view[hidden]{display:none!important}.student-list{display:grid;gap:8px}.student-row{display:grid;grid-template-columns:minmax(240px,1.4fr) 130px 130px minmax(160px,.7fr) auto;gap:12px;align-items:center;min-height:66px;padding:10px 12px;border:1px solid #e8e9ed;border-radius:14px;background:#fbfbfc}.student-person{display:flex;align-items:center;gap:11px;min-width:0}.student-avatar{display:grid;place-items:center;flex:0 0 40px;width:40px;height:40px;border-radius:12px;color:#5c6377;background:#e9ecf2;font-size:14px;font-weight:900}.student-person strong,.student-person span{display:block}.student-person strong{overflow:hidden;font-size:14px;text-overflow:ellipsis;white-space:nowrap}.student-person span{margin-top:2px;color:#9195a4;font-size:14px}.student-cell span,.student-cell strong{display:block;font-size:14px}.student-cell span{color:#9498a7}.student-cell strong{margin-top:2px}.risk{display:inline-flex;align-items:center;width:max-content;max-width:100%;min-height:31px;padding:5px 9px;border-radius:999px;font-size:14px;font-weight:800}.risk.ok{color:#26734a;background:#eaf7ef}.risk.attention{color:#9b662b;background:#fff0df}.risk.high{color:#a4473f;background:#fff0ee}.student-open{display:grid;place-items:center;width:40px;height:40px;border:1px solid #dfe2e8;border-radius:11px;background:#fff;color:#696e7f;text-decoration:none}.student-open:hover{color:#8b641e;border-color:#d4b76d;background:#fffaf0}
    .result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.result-card{padding:17px;border:1px solid #e7e9ed;border-radius:17px;background:#fafbfc}.result-card span,.result-card strong{display:block}.result-card span{color:#898e9f;font-size:14px}.result-card strong{margin-top:8px;font-size:28px;line-height:1}.result-card p{margin:9px 0 0;color:#777c8d;font-size:14px}.assignment-list{display:grid;gap:9px}.assignment{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px;border:1px solid #e8e9ed;border-radius:14px;background:#fbfbfc}.assignment strong,.assignment span{display:block}.assignment strong{font-size:15px}.assignment span{margin-top:4px;color:#858a9b;font-size:14px}.assignment .status{display:inline-flex;align-items:center;min-height:31px;padding:5px 10px;border-radius:999px;font-size:14px;font-weight:800}.status.green{color:#26734a;background:#eaf7ef}.status.orange{color:#966128;background:#fff0df}.status.gray{color:#666d7e;background:#eef0f3}

    /* Groups accordion */
    .groups-accordion{display:grid;gap:12px;margin-bottom:18px}
    .group-accordion{overflow:hidden;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow);transition:border-color .2s ease,box-shadow .2s ease}
    .group-accordion.open{border-color:#d7b866;box-shadow:0 18px 45px rgba(184,138,50,.11)}
    .accordion-trigger{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;width:100%;min-height:82px;padding:14px 16px;border:0;background:#fff;color:var(--ink);text-align:left;cursor:pointer}
    .group-accordion.open .accordion-trigger{background:linear-gradient(145deg,#fffdf9,#fff9ed)}
    .accordion-trigger:hover{background:#fffaf1}
    .accordion-main{min-width:0}.accordion-title-row{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.accordion-title-row h3{margin:0;font-size:20px;line-height:1.25}.accordion-meta{margin-top:4px;color:var(--soft);font-size:14px}.accordion-subject{margin-top:5px;color:#505667;font-size:14px;font-weight:700;line-height:1.4}
    .accordion-side{display:flex;align-items:center;gap:10px}.accordion-chevron{display:grid;place-items:center;width:38px;height:38px;border:1px solid #e3e5e9;border-radius:11px;color:#73798a;background:#fff;transition:transform .2s ease,background .2s ease,color .2s ease}.accordion-chevron svg{width:18px;height:18px}.group-accordion.open .accordion-chevron{color:#8a641d;background:#fff4d8;transform:rotate(180deg)}
    .accordion-body{display:none;padding:0 16px 18px;border-top:1px solid #eceef2;background:#fff}.group-accordion.open .accordion-body{display:block}
    .accordion-summary{padding-top:15px}.accordion-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px;flex-wrap:wrap}.accordion-toolbar .group-actions{flex:1;margin-top:0;min-width:min(100%,460px)}
    .accordion-tabs{display:flex;gap:6px;margin:17px 0 14px;padding:4px;border:1px solid #e7e9ed;border-radius:14px;background:#f7f8fa;width:max-content;max-width:100%;overflow-x:auto}.accordion-tab{min-height:40px;padding:0 14px;border:0;border-radius:10px;color:#74798a;background:transparent;font-size:14px;font-weight:800;cursor:pointer;white-space:nowrap}.accordion-tab.active{color:#765718;background:#fff;box-shadow:0 5px 14px rgba(20,24,44,.06)}.accordion-view[hidden]{display:none!important}
    @media(max-width:700px){.accordion-trigger{grid-template-columns:auto minmax(0,1fr) auto;gap:10px;min-height:78px;padding:12px}.accordion-side .group-chip{display:none}.accordion-title-row h3{font-size:18px}.accordion-body{padding:0 12px 14px}.accordion-toolbar{display:block}.accordion-toolbar .group-actions{margin-top:12px}.result-grid{grid-template-columns:1fr}.assignment{grid-template-columns:1fr}.assignment .status{width:max-content}.student-row{grid-template-columns:1fr}.student-open{width:100%;height:42px}.metrics{grid-template-columns:1fr}.metric{display:flex;align-items:center;justify-content:space-between;gap:10px}.metric strong{margin-top:0}.group-actions{grid-template-columns:1fr}.group-actions .action-btn:last-child{grid-column:auto}}
    .empty-state{display:none;padding:28px;border:1px dashed #d7dae1;border-radius:18px;color:#858a9b;background:#fafbfc;text-align:center;font-size:14px}

    /* Mobile */
    .mobile-nav{display:none}.ai-fab{position:fixed;z-index:1050;right:22px;bottom:24px;display:grid;place-items:center;width:58px;height:58px;border:1px solid #c28d2b;border-radius:18px;color:#171a2a;background:linear-gradient(135deg,var(--gold-2),#c48f2f);box-shadow:0 17px 32px rgba(184,138,50,.28);font-size:14px;font-weight:900;text-decoration:none}
    @media(max-width:1180px){.summary-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.student-row{grid-template-columns:minmax(210px,1.25fr) 110px 110px minmax(145px,.7fr) auto}.toolbar{align-items:flex-start}.toolbar__filters{flex-wrap:wrap;justify-content:flex-end}.groups-grid{grid-template-columns:1fr}}
    @media(max-width:900px){
      :root{--topbar-h:68px}.sidebar{display:none}.workspace{margin-left:0;padding-bottom:var(--mobile-nav-h)}.topbar{min-height:68px;padding:0 14px}.topbar__title{display:none}.topbar__mobile-brand{display:block;color:#b7862d;font-family:Georgia,"Times New Roman",serif;font-size:20px;font-style:italic;font-weight:700}.language button{min-width:42px;height:36px;padding:0 8px}.profile__copy,.profile__chevron{display:none}.profile__button{padding:4px}.profile__avatar{width:38px;height:38px}
      .main{padding:22px 14px calc(var(--mobile-nav-h) + 36px)}.intro{display:block;margin-bottom:18px}.intro__eyebrow{margin-bottom:5px}.intro h1{font-size:30px}.intro__lead{font-size:14px;line-height:1.6}.date-card{width:100%;min-width:0;margin-top:15px}.summary-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.summary-card{padding:14px}.summary-card__icon{width:42px;height:42px;flex-basis:42px}.summary-card strong{font-size:21px}
      .toolbar{display:grid;grid-template-columns:1fr;padding:10px}.search{max-width:none}.toolbar__filters{display:grid;grid-template-columns:1fr 1fr;width:100%}.filter-select{width:100%;min-width:0}.groups-grid{grid-template-columns:1fr}.group-card{padding:17px}.group-card__top{gap:10px}.group-chip{white-space:normal;text-align:center}.metrics{grid-template-columns:repeat(3,minmax(0,1fr))}.metric{padding:10px 8px}.metric strong{font-size:17px}.group-actions{grid-template-columns:1fr 1fr}.group-actions .action-btn:last-child{grid-column:1/-1}
      .detail-panel{padding:15px;border-radius:19px}.detail-head{display:block}.detail-head__actions{display:grid;grid-template-columns:1fr 1fr;margin-top:14px}.detail-head__actions .action-btn{width:100%}.detail-tabs{width:100%}.detail-tab{flex:1}.student-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;padding:13px}.student-person{grid-column:1/-1}.student-cell{padding-top:8px;border-top:1px solid #e9eaed}.student-cell:nth-of-type(4){grid-column:1/-1}.student-open{align-self:end}.result-grid{grid-template-columns:1fr}.assignment{grid-template-columns:1fr}.assignment .status{justify-self:start}
      .mobile-nav{position:fixed;z-index:1100;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,1fr);min-height:var(--mobile-nav-h);padding:7px max(6px,env(safe-area-inset-right)) calc(7px + env(safe-area-inset-bottom)) max(6px,env(safe-area-inset-left));border-top:1px solid rgba(21,24,41,.1);background:rgba(255,255,255,.97);box-shadow:0 -12px 30px rgba(20,24,44,.08);backdrop-filter:blur(16px)}.mobile-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-width:0;border-radius:12px;color:#74798a;text-decoration:none;font-size:14px;font-weight:700;line-height:1.15;text-align:center}.mobile-nav a.active{color:#8c651f;background:#fff7e6}.mobile-nav svg{width:20px;height:20px}.ai-fab{right:15px;bottom:calc(var(--mobile-nav-h) + 14px);width:54px;height:54px;border-radius:17px}
    }
    @media(max-width:520px){.summary-grid{grid-template-columns:1fr}.summary-card{min-height:70px}.toolbar__filters{grid-template-columns:1fr}.group-card__top{display:block}.group-card__identity{margin-bottom:12px}.group-chip{display:inline-flex}.metrics{grid-template-columns:1fr}.metric{display:flex;align-items:center;justify-content:space-between;gap:10px}.metric strong{margin-top:0}.group-actions{grid-template-columns:1fr}.group-actions .action-btn:last-child{grid-column:auto}.detail-head__actions{grid-template-columns:1fr}.student-row{grid-template-columns:1fr}.student-cell,.student-cell:nth-of-type(4){grid-column:1}.student-open{width:100%;height:42px}.detail-tab{min-width:max-content;flex:none}}
    @media(max-width:430px){.topbar{padding:0 10px}.topbar__actions{gap:6px}.language{gap:1px;padding:2px}.language button{min-width:36px;height:34px;padding:0 5px}.topbar__mobile-brand{font-size:18px}.main{padding-left:10px;padding-right:10px}.intro h1{font-size:28px}.section-head{display:block}.section-head__count{display:block;margin-top:6px}.group-card{padding:15px}.group-badge{width:48px;height:48px;flex-basis:48px}.detail-panel{padding:12px}.mobile-nav{padding-left:4px;padding-right:4px}.mobile-nav a{font-size:14px}}
  
/* Platform additions */
.brand img{display:block;width:192px;max-width:100%;height:auto;object-fit:contain}.data-state{display:none;align-items:center;gap:10px;margin:0 0 18px;padding:13px 15px;border:1px solid var(--line);border-radius:15px;background:#fff;color:var(--soft);font-size:14px;font-weight:700}.data-state.show{display:flex}.data-state.is-loading{border-color:#eadab7;background:#fffaf0;color:#8a671f}.data-state.is-ready{border-color:#cce8db;background:#f1fbf6;color:#287154}.data-state.is-error{border-color:#efd0cc;background:#fff5f4;color:#a44840}.data-state__spinner{width:18px;height:18px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
.empty-state{display:none;padding:28px;border:1px dashed #d8dbe2;border-radius:18px;background:#fff;color:var(--soft);text-align:center;font-size:14px}.group-chip.curator{color:#8a641d;background:#fff2cc}.metric strong.na{color:#9aa0ad}.student-row--simple{grid-template-columns:minmax(220px,1fr) 160px auto}.student-id{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:#7c8190}.result-card strong.na{color:#9aa0ad}.assignment-empty{padding:18px;border:1px dashed #dfe2e8;border-radius:14px;color:var(--soft);background:#fafbfc}.topbar__mobile-brand img{display:block;width:118px;height:auto}
@media(max-width:900px){.brand img{width:168px}}