:root{--bg:#f5f7fb;--pri:#2563eb;--pri2:#7c3aed;--dark:#0f172a;--muted:#64748b;--card:#fff;--ok:#16a34a;--warn:#f59e0b;--bad:#ef4444}
*{box-sizing:border-box}body{margin:0;background:var(--bg);font-family:Inter,system-ui,Arial,sans-serif;color:var(--dark)}a{text-decoration:none;color:inherit}.app{max-width:480px;margin:auto;min-height:100vh;background:#f8fafc;position:relative;padding-bottom:86px}.hero{background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;padding:22px 18px 30px;border-radius:0 0 28px 28px;box-shadow:0 12px 32px rgba(37,99,235,.25)}.topbar{display:flex;align-items:center;justify-content:space-between}.brand{font-weight:900;font-size:20px}.avatar{width:44px;height:44px;border-radius:16px;background:rgba(255,255,255,.2);display:grid;place-items:center;border:1px solid rgba(255,255,255,.3)}.hello{margin-top:18px}.hello h1{font-size:24px;margin:3px 0}.hello p{margin:0;opacity:.88}.search{margin:16px 0 0;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.22);border-radius:18px;padding:13px 15px;color:#fff}.wrap{padding:16px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.card{background:var(--card);border-radius:22px;padding:16px;box-shadow:0 10px 28px rgba(15,23,42,.08);border:1px solid #eef2ff}.stat b{font-size:22px;display:block}.stat span,.muted{color:var(--muted);font-size:13px}.icon{width:42px;height:42px;border-radius:15px;display:grid;place-items:center;background:#eef2ff;color:var(--pri);font-weight:900;margin-bottom:9px}.section-title{display:flex;align-items:center;justify-content:space-between;margin:20px 0 10px}.section-title h2{font-size:18px;margin:0}.course{display:flex;gap:12px;align-items:center;margin-bottom:12px}.course img{width:72px;height:72px;border-radius:18px;object-fit:cover;background:#e2e8f0}.course h3{font-size:15px;margin:0 0 5px}.badge{display:inline-block;padding:5px 9px;border-radius:999px;background:#eef2ff;color:#3730a3;font-size:12px;font-weight:700}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;border:0;border-radius:16px;padding:13px 16px;font-weight:800;background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;box-shadow:0 10px 24px rgba(37,99,235,.25);cursor:pointer}.btn.light{background:#eef2ff;color:#1d4ed8;box-shadow:none}.btn.danger{background:var(--bad)}.form{background:#fff;border-radius:24px;padding:18px;box-shadow:0 10px 28px rgba(15,23,42,.08)}.field{margin-bottom:13px}.field label{display:block;font-size:13px;font-weight:800;margin:0 0 7px;color:#334155}.field input,.field select,.field textarea{width:100%;border:1px solid #e2e8f0;border-radius:15px;padding:13px;background:#f8fafc;outline:none;font-size:15px}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--pri);background:#fff}.alert{margin:12px 0;padding:12px 14px;border-radius:16px;font-weight:700}.alert.success{background:#dcfce7;color:#166534}.alert.error{background:#fee2e2;color:#991b1b}.alert.info{background:#dbeafe;color:#1e40af}.bottom-nav{position:fixed;left:50%;transform:translateX(-50%);bottom:10px;max-width:456px;width:calc(100% - 24px);background:#fff;border:1px solid #e2e8f0;border-radius:24px;display:grid;grid-template-columns:repeat(5,1fr);box-shadow:0 16px 40px rgba(15,23,42,.18);z-index:10}.bottom-nav a{padding:10px 4px;text-align:center;color:#64748b;font-size:11px;font-weight:800}.bottom-nav a.active{color:var(--pri)}.bottom-nav i{display:block;font-style:normal;font-size:20px;margin-bottom:2px}.page-head{padding:18px 16px;background:#fff;border-bottom:1px solid #e2e8f0;position:sticky;top:0;z-index:5}.page-head h1{font-size:20px;margin:0}.list{display:grid;gap:12px}.progress{height:9px;background:#e2e8f0;border-radius:20px;overflow:hidden}.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--pri),var(--pri2));border-radius:20px}.row{display:flex;gap:10px;align-items:center;justify-content:space-between}.small{font-size:12px}.empty{text-align:center;color:#64748b;padding:30px 10px}.certificate{background:linear-gradient(135deg,#fff7ed,#eff6ff);border:2px dashed #f59e0b;text-align:center}.certificate h2{font-family:Georgia,serif;font-size:24px}.print-btn{margin-top:12px}@media print{.bottom-nav,.page-head,.print-btn{display:none}.app{max-width:none;padding:0}.card{box-shadow:none}}

.back{width:34px;height:34px;border-radius:12px;background:#eef2ff;color:#1d4ed8;display:inline-grid;place-items:center;font-size:28px;margin-right:10px;vertical-align:middle}.page-head{display:flex;align-items:center}.hero-home{padding-bottom:64px}.home-wrap{margin-top:-54px}.banner-card{position:relative;overflow:hidden;border-radius:26px;margin-bottom:14px;box-shadow:0 16px 36px rgba(15,23,42,.18);background:#111827}.banner-card img{width:100%;height:158px;object-fit:cover;display:block;opacity:.92}.banner-text{position:absolute;left:16px;right:16px;bottom:14px;color:#fff;background:rgba(15,23,42,.42);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.22);padding:12px;border-radius:18px}.banner-text b{display:block;font-size:18px}.banner-text span{display:block;font-size:12px;opacity:.9;margin-top:3px}.course-grid{display:grid;grid-template-columns:1fr;gap:14px}.course-card{position:relative;padding:0;overflow:hidden}.course-card>img{width:100%;height:145px;object-fit:cover;background:#e2e8f0}.course-body{padding:14px}.course-body h3{margin:0 0 7px;font-size:17px;line-height:1.25}.course-body p{margin:0 0 12px;color:var(--muted);font-size:13px;line-height:1.45}.meta{display:flex;align-items:center;justify-content:space-between;gap:10px}.meta span{font-size:12px;color:#475569;background:#f1f5f9;border-radius:999px;padding:5px 9px}.meta b{color:#1d4ed8}.meta.big{margin-top:10px}.actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:13px}.actions a{padding:11px;border-radius:14px;text-align:center;font-weight:900;font-size:13px;background:#eef2ff;color:#1d4ed8}.actions a:last-child{background:linear-gradient(135deg,var(--pri),var(--pri2));color:white}.check{position:absolute;top:10px;right:10px;z-index:2}.check input{display:none}.check span{width:32px;height:32px;border-radius:12px;background:rgba(255,255,255,.92);border:2px solid #dbeafe;display:block;box-shadow:0 6px 18px rgba(0,0,0,.12)}.check input:checked+span{background:#22c55e;border-color:#22c55e}.check input:checked+span:after{content:'✓';display:grid;place-items:center;height:100%;color:#fff;font-weight:900}.sticky-buy{position:sticky;bottom:80px;z-index:6;margin-top:16px}.search-form{margin-bottom:14px}.search-form .field{margin-bottom:10px}.detail-hero{text-align:center;overflow:hidden;padding:0 0 16px}.detail-hero img{width:100%;height:190px;object-fit:cover}.detail-hero h2{font-size:22px;margin:14px 14px 0}.detail-box h3{margin-top:0}.detail-box p{color:#475569;line-height:1.65;margin-bottom:0}.facility-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.facility-grid span{background:#f8fafc;border:1px solid #e2e8f0;border-radius:16px;padding:12px;font-weight:800;font-size:13px}.mini-course{display:flex;gap:12px;align-items:center;background:#f8fafc;border:1px solid #e2e8f0;border-radius:18px;padding:10px}.mini-course img{width:58px;height:58px;border-radius:15px;object-fit:cover}.mini-course b{display:block;font-size:14px}.mini-course span{display:block;color:var(--muted);font-size:12px;margin-top:3px}.total-box{display:flex;justify-content:space-between;align-items:center;background:#eef2ff;border-radius:18px;padding:14px;margin:14px 0}.total-box span{font-weight:800;color:#475569}.total-box b{font-size:20px;color:#1d4ed8}.form-title{font-size:18px;margin:0 0 12px}.empty.slim{padding:16px;background:#fff;border-radius:18px;border:1px dashed #cbd5e1}@media(min-width:430px){.course-grid{grid-template-columns:1fr 1fr}.course-card>img{height:120px}.course-body h3{font-size:14px}.course-body p{font-size:12px}.actions{grid-template-columns:1fr}.banner-card img{height:180px}}

/* public home upgrade */
.subbrand{display:block;font-size:12px;opacity:.82;margin-top:2px}.top-actions a{display:inline-flex;align-items:center;justify-content:center;min-width:78px;height:38px;border-radius:14px;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.28);color:#fff;font-weight:900;font-size:13px}.public-hero{background:radial-gradient(circle at 88% 15%,rgba(255,255,255,.30),transparent 24%),linear-gradient(135deg,#0ea5e9,#2563eb 48%,#7c3aed);padding-bottom:74px}.glass-search{margin-bottom:12px;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.68)}.public-course{border:1px solid #e0e7ff;box-shadow:0 14px 34px rgba(37,99,235,.10)}.facility-line{display:flex;gap:6px;flex-wrap:wrap;margin:11px 0 0}.facility-line span{font-size:11px;font-weight:800;color:#475569;background:#f8fafc;border:1px solid #e2e8f0;border-radius:999px;padding:5px 8px}.bottom-nav a i{width:34px;height:30px;border-radius:13px;display:grid;place-items:center;margin:0 auto 4px;color:#fff;font-size:17px}.bottom-nav .nav-home i{background:linear-gradient(135deg,#06b6d4,#2563eb)}.bottom-nav .nav-courses i{background:linear-gradient(135deg,#f59e0b,#ef4444)}.bottom-nav .nav-study i{background:linear-gradient(135deg,#22c55e,#16a34a)}.bottom-nav .nav-exam i{background:linear-gradient(135deg,#8b5cf6,#7c3aed)}.bottom-nav .nav-profile i{background:linear-gradient(135deg,#64748b,#0f172a)}.bottom-nav a.active{transform:translateY(-2px)}.bottom-nav a.active i{box-shadow:0 9px 18px rgba(37,99,235,.28)}
@media(max-width:380px){.actions{grid-template-columns:1fr}.banner-text b{font-size:16px}.hello h1{font-size:21px}}

/* final mobile app shell */
.app{padding-top:70px;background:linear-gradient(180deg,#eef5ff 0,#f8fafc 180px,#f8fafc 100%)}
.app-top-header{position:fixed;top:0;left:50%;transform:translateX(-50%);max-width:480px;width:100%;height:66px;z-index:30;display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid #e2e8f0;box-shadow:0 10px 28px rgba(15,23,42,.06)}
.brand-mini{display:flex;align-items:center;gap:10px;font-weight:950;color:#0f172a}.brand-mini img{width:42px;height:42px;border-radius:15px;object-fit:contain;background:#eef2ff;padding:5px;border:1px solid #dbeafe}.brand-mini span{font-size:15px;line-height:1.1}.head-links a{padding:10px 13px;border-radius:14px;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;font-size:12px;font-weight:900;box-shadow:0 10px 20px rgba(37,99,235,.18)}
.hero{border-radius:0 0 30px 30px}.topbar .brand{display:flex;align-items:center;gap:10px}.topbar .brand:before{content:'';width:38px;height:38px;border-radius:14px;background:url('https://aicsvs.com/images/favicon.png') center/contain no-repeat,#ffffff33;border:1px solid rgba(255,255,255,.35)}
.qr-box{text-align:center;background:linear-gradient(135deg,#f8fafc,#eef2ff);border:1px dashed #93c5fd;border-radius:22px;padding:15px;margin:12px 0}.qr-box img{width:210px;height:210px;border-radius:16px;background:#fff;padding:8px;border:1px solid #e2e8f0}.qr-box b{display:block;margin:8px 0 3px}.qr-box small{display:block;color:#64748b;line-height:1.5}.qr-note{background:#fff7ed;color:#9a3412;border:1px solid #fed7aa;padding:10px 12px;border-radius:15px;font-size:12px;font-weight:800;line-height:1.5;margin:10px 0}.status{display:inline-flex;padding:6px 10px;border-radius:999px;font-size:11px;font-weight:900}.status.pending{background:#fef3c7;color:#92400e}.status.active{background:#dcfce7;color:#166534}.status.rejected{background:#fee2e2;color:#991b1b}.status.completed{background:#ede9fe;color:#5b21b6}.history-card{padding:0;overflow:hidden}.history-top{display:flex;gap:12px;padding:13px;background:#fff}.history-top img{width:74px;height:74px;border-radius:18px;object-fit:cover}.history-mid{padding:0 14px 14px}.kv{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:12px 0}.kv div{background:#f8fafc;border:1px solid #e2e8f0;border-radius:14px;padding:10px}.kv span{display:block;color:#64748b;font-size:11px;font-weight:800}.kv b{display:block;margin-top:3px;font-size:13px}.pay-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:12px 0}.pay-flow span{background:#eef2ff;color:#1d4ed8;border-radius:14px;padding:9px 6px;text-align:center;font-size:11px;font-weight:900}.course-detail-list{margin:10px 0 0;padding-left:18px;color:#475569;font-size:13px;line-height:1.7}.admin-receipt{display:inline-flex;margin-top:9px;padding:9px 12px;border-radius:12px;background:#eef2ff;color:#1d4ed8;font-weight:900;font-size:12px}
@media print{.app-top-header{display:none}.app{padding-top:0}}


/* Play Store policy/support pages */
.legal-strip{margin:18px 14px 92px;display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.legal-strip a{font-size:11px;font-weight:900;color:#1d4ed8;background:#eef2ff;border:1px solid #dbeafe;border-radius:999px;padding:7px 10px}
.policy-hero{text-align:center;margin:14px 0;background:linear-gradient(135deg,#eff6ff,#fff)}
.policy-hero img{width:82px;height:82px;border-radius:24px;object-fit:contain;background:#fff;border:1px solid #dbeafe;padding:8px;box-shadow:0 8px 22px rgba(37,99,235,.12)}
.policy-hero h2{margin:10px 0 4px;font-size:22px}.policy-hero p{margin:0;color:#64748b;font-weight:700;font-size:13px}
.policy-card{margin:12px 0;line-height:1.65}.policy-card h3{font-size:16px;margin:16px 0 7px}.policy-card h3:first-child{margin-top:0}.policy-card p,.policy-card li{font-size:14px;color:#475569}.policy-card ul{padding-left:18px;margin:8px 0}.support-grid,.app-info-grid{display:grid;grid-template-columns:1fr;gap:12px;margin:12px 0}.support-card b,.info-tile b{display:block;font-size:15px}.support-card span,.info-tile span{display:block;color:#64748b;font-size:13px;margin-top:5px;word-break:break-word}.link-list{display:grid;gap:10px}.link-list a{padding:12px 14px;border-radius:14px;background:#f8fafc;border:1px solid #e2e8f0;font-weight:900;color:#1d4ed8}.app-links{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:14px;padding:12px}.app-links a{display:block;background:#f8fafc;border:1px solid #e2e8f0;border-radius:16px;padding:11px 8px;text-align:center}.app-links b{display:block;font-size:12px;color:#0f172a}.app-links span{display:block;color:#64748b;font-size:10px;margin-top:3px}
.head-links{display:flex;gap:6px}.head-links a{white-space:nowrap}
@media(min-width:430px){.support-grid,.app-info-grid{grid-template-columns:1fr 1fr}}


/* Responsive V4 source-level fallback (loaded before the unified layer) */
@media (max-width:767px){.app{max-width:100%;margin:0}.course-grid{grid-template-columns:1fr}.app-top-header{left:0;transform:none;max-width:none}.bottom-nav{left:12px;right:12px;transform:none;width:auto}}
@media (min-width:768px){.app{max-width:980px}.app-top-header{max-width:980px}.course-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (min-width:1200px){.app{max-width:1240px}.app-top-header{max-width:1240px}.course-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}