.video-modal{position:fixed;inset:0;background:rgba(15,23,42,.72);display:none;align-items:center;justify-content:center;z-index:999;padding:24px}.video-modal.open{display:flex}.video-box{width:min(980px,96vw);background:#fff;border-radius:24px;overflow:hidden;box-shadow:0 30px 90px rgba(0,0,0,.35)}.video-head{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;border-bottom:1px solid #e8edf3}.video-close{border:0;background:#0f172a;color:#fff;border-radius:50%;width:38px;height:38px;font-size:20px;cursor:pointer}.video-frame{aspect-ratio:16/9;background:#000}.video-frame iframe,.video-frame video{width:100%;height:100%;border:0;display:block}.play-btn{border:0;background:#f47b20;color:#fff;border-radius:999px;padding:10px 16px;font-weight:900;cursor:pointer}.alert{padding:14px 16px;border-radius:16px;margin:14px 0;font-weight:800}.alert.ok{background:#dcfce7;color:#166534}.alert.err{background:#fee2e2;color:#991b1b}.form-card{background:#fff;border:1px solid #e8edf3;border-radius:24px;padding:24px;box-shadow:0 16px 45px rgba(18,32,51,.07)}.form-card input,.form-card textarea,.form-card select{width:100%;border:1px solid #d8e2ef;border-radius:14px;padding:14px;margin:8px 0 14px;font:inherit;background:#f8fafc}.form-card textarea{min-height:120px}.auth-actions-row{display:flex;gap:10px;flex-wrap:wrap}.exam-option{display:block;border:1px solid #e5edf6;border-radius:16px;padding:12px;margin:10px 0;cursor:pointer}.exam-option input{margin-right:8px}.admin-body{background:#f4f7fb}.admin-shell{display:grid;grid-template-columns:285px 1fr;min-height:100vh}.admin-side{background:#0f172a;color:#fff;padding:24px;position:sticky;top:0;height:100vh;overflow:auto}.admin-logo{display:flex;align-items:center;gap:12px;color:#fff;font-weight:900;font-size:20px;margin-bottom:25px}.admin-logo img{width:78px;height:auto;max-height:58px;object-fit:contain}.admin-side nav{display:grid;gap:8px}.admin-side nav a{color:#cbd5e1;padding:13px 14px;border-radius:14px;font-weight:800}.admin-side nav a:hover{background:#1e293b;color:#fff}.admin-main{padding:30px}.admin-top{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px}.admin-top h1{margin:0;font-size:32px}.admin-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.admin-stat{background:#fff;border:1px solid #e8edf3;border-radius:22px;padding:24px;box-shadow:0 12px 35px rgba(15,23,42,.06)}.admin-stat b{font-size:34px;display:block;color:#0f172a}.admin-table{width:100%;border-collapse:separate;border-spacing:0 10px}.admin-table th{text-align:left;color:#64748b;font-size:13px}.admin-table td{background:#fff;border-top:1px solid #e8edf3;border-bottom:1px solid #e8edf3;padding:14px}.admin-table td:first-child{border-left:1px solid #e8edf3;border-radius:14px 0 0 14px}.admin-table td:last-child{border-right:1px solid #e8edf3;border-radius:0 14px 14px 0}.admin-actions{display:flex;gap:8px;flex-wrap:wrap}.small-btn{border:0;border-radius:999px;background:#eef5ff;color:#2563eb;padding:8px 12px;font-weight:900;cursor:pointer}.small-btn.danger{background:#fee2e2;color:#991b1b}.two-col{display:grid;grid-template-columns:.9fr 1.1fr;gap:22px}.panel-photo{width:44px;height:44px;border-radius:12px;object-fit:cover}.badge-soft{display:inline-block;background:#eef5ff;color:#2563eb;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:900}.login-clean{max-width:520px;margin:70px auto}.admin-login-link{margin-top:14px;text-align:center}.cta-wide{background:linear-gradient(90deg,#0d4f8b,#083b6a);color:#fff;padding:54px 0}.cta-wide .container{display:flex;align-items:center;justify-content:space-between;gap:28px}.cta-wide h2{font-size:34px;margin:0 0 8px;color:#fff}.cta-wide p{margin:0;color:#dbeafe}.cta-wide .btn{background:#f47b20;color:#fff}.thumb{width:110px;height:70px;object-fit:cover;border-radius:12px}.result-card{background:#fff;border:1px solid #e8edf3;border-radius:22px;padding:22px;margin:16px 0}.result-good{color:#166534}.result-bad{color:#991b1b}@media(max-width:1000px){.admin-shell{grid-template-columns:1fr}.admin-side{position:relative;height:auto}.admin-grid,.two-col{grid-template-columns:1fr}.cta-wide .container{display:block}.admin-top{display:block}.admin-table{font-size:14px}}@media(max-width:640px){.admin-main{padding:18px}.admin-side{padding:18px}.admin-table{display:block;overflow:auto}.cta-wide h2{font-size:26px}}

/* V2 index enrichment + legal pages */
.hero-advanced{position:relative;overflow:hidden}.hero-advanced:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 82% 18%,rgba(245,158,11,.16),transparent 28%),radial-gradient(circle at 12% 20%,rgba(10,34,78,.14),transparent 30%);pointer-events:none}.hero-copy{position:relative;z-index:2}.hero-trust{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.hero-trust span{background:#fff;border:1px solid rgba(10,34,78,.08);padding:9px 12px;border-radius:999px;font-size:13px;font-weight:700;color:#0a224e;box-shadow:0 12px 30px rgba(15,23,42,.06)}.hero-visual-stack{position:relative}.hero-card-main{position:relative;z-index:1}.floating-score-card,.floating-lesson-card{position:absolute;z-index:3;background:#fff;border:1px solid rgba(10,34,78,.08);box-shadow:0 18px 45px rgba(15,23,42,.14);border-radius:18px;padding:14px 16px}.floating-score-card{right:-12px;top:34px}.floating-score-card strong{display:block;font-size:28px;color:#f59e0b}.floating-score-card span,.floating-lesson-card span{display:block;font-size:12px;color:#64748b}.floating-lesson-card{left:-18px;bottom:36px}.floating-lesson-card b{display:block;color:#0a224e}.compact-section{padding:26px 0}.feature-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;background:#0a224e;border-radius:26px;padding:18px;box-shadow:0 24px 60px rgba(10,34,78,.18)}.feature-strip div{display:flex;gap:10px;align-items:center;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:16px;color:#fff}.feature-strip b{color:#f59e0b}.split-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}.split-layout.reverse{grid-template-columns:.95fr 1.05fr}.split-photo{position:relative;border-radius:28px;overflow:hidden;box-shadow:0 24px 70px rgba(15,23,42,.14)}.split-photo img{width:100%;height:430px;object-fit:cover;display:block}.photo-badge{position:absolute;left:20px;bottom:20px;background:#fff;padding:12px 16px;border-radius:14px;font-weight:800;color:#0a224e}.split-content h2{font-size:38px;line-height:1.12;margin:10px 0 14px;color:#0a224e}.split-content p{color:#64748b;font-size:16px;line-height:1.75}.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:18px 0}.check-list span{background:#fff;border:1px solid rgba(10,34,78,.09);padding:13px;border-radius:14px;font-weight:700;color:#0f172a}.check-list span:before{content:"✓";color:#f59e0b;margin-right:8px}.teacher-mini-grid,.scenario-grid,.announcement-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.teacher-mini-grid div,.scenario-grid div,.announcement-grid article{background:#fff;border:1px solid rgba(10,34,78,.08);border-radius:20px;padding:20px;box-shadow:0 16px 44px rgba(15,23,42,.06)}.teacher-mini-grid b{display:block;color:#0a224e}.teacher-mini-grid small{color:#64748b}.panel-preview{background:#0a224e;border-radius:28px;padding:24px;color:#fff;box-shadow:0 24px 70px rgba(10,34,78,.22)}.panel-line{display:flex;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12)}.panel-line b{color:#f59e0b}.panel-chart{height:160px;display:flex;align-items:end;gap:12px;margin-top:24px}.panel-chart i{display:block;flex:1;border-radius:12px 12px 0 0;background:linear-gradient(180deg,#f59e0b,#fff1c2)}.topic-showcase{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.topic-card{background:#fff;border-radius:22px;overflow:hidden;text-decoration:none;color:inherit;border:1px solid rgba(10,34,78,.08);box-shadow:0 18px 45px rgba(15,23,42,.06)}.topic-card img{height:190px;width:100%;object-fit:cover}.topic-card div{padding:18px}.topic-card small{font-weight:800;color:#f59e0b}.topic-card h3{color:#0a224e;margin:6px 0}.topic-card p{color:#64748b}.announcement-grid{grid-template-columns:repeat(3,1fr)}.announcement-grid small{color:#f59e0b;font-weight:800}.announcement-grid h3{color:#0a224e}.scenario-grid div{box-shadow:none}.scenario-grid h3{color:#0a224e}.scenario-grid p{color:#64748b;line-height:1.7}.faq-block{display:grid;grid-template-columns:.8fr 1.2fr;gap:36px;background:#fff;border:1px solid rgba(10,34,78,.08);border-radius:28px;padding:34px;box-shadow:0 20px 60px rgba(15,23,42,.07)}.faq-list details{border-bottom:1px solid rgba(10,34,78,.1);padding:16px 0}.faq-list summary{cursor:pointer;font-weight:800;color:#0a224e}.faq-list p{color:#64748b;line-height:1.7}.legal-hero{background:linear-gradient(135deg,#0a224e,#12376f);color:#fff;padding:70px 0}.legal-hero h1{font-size:44px;margin:10px 0}.legal-hero p{max-width:760px;color:rgba(255,255,255,.82)}.legal-layout{display:grid;grid-template-columns:300px 1fr;gap:28px;align-items:start}.legal-menu,.legal-content{background:#fff;border:1px solid rgba(10,34,78,.08);border-radius:24px;padding:24px;box-shadow:0 16px 45px rgba(15,23,42,.06)}.legal-menu{position:sticky;top:110px}.legal-menu h3{margin-top:0;color:#0a224e}.legal-menu a{display:block;text-decoration:none;color:#334155;padding:12px 14px;border-radius:12px;font-weight:700}.legal-menu a.active,.legal-menu a:hover{background:#fff7e6;color:#b45309}.legal-content h2{margin-top:0;color:#0a224e}.legal-content p{color:#475569;line-height:1.85;font-size:16px}.legal-note{margin-top:26px;background:#fff7e6;border:1px solid #fed7aa;border-radius:16px;padding:16px;color:#7c2d12}.footer-links div:nth-child(3) a{margin-bottom:6px}
@media(max-width:900px){.feature-strip,.split-layout,.split-layout.reverse,.teacher-mini-grid,.scenario-grid,.announcement-grid,.topic-showcase,.faq-block,.legal-layout{grid-template-columns:1fr}.split-photo img{height:300px}.split-content h2{font-size:29px}.check-list{grid-template-columns:1fr}.floating-score-card,.floating-lesson-card{position:static;margin-top:12px}.legal-menu{position:static}.hero-trust span{font-size:12px}.feature-strip{padding:12px}.feature-strip div{padding:13px}.legal-hero h1{font-size:32px}}