:root{--color-primary:#D71920;--color-primary-hover:#B9151B;--color-text:#15171B;--color-muted:#6B7280;--color-border:#E8EAED;--color-surface:#FFF;--color-background:#F6F7F9;--color-success:#16A34A;--color-success-soft:#F0FDF4;--color-red-soft:#FFF1F2;--radius-sm:12px;--radius-md:18px;--radius-lg:26px;--shadow-sm:0 6px 18px rgba(21,23,27,.045);--shadow-md:0 16px 38px rgba(21,23,27,.09);--space-1:8px;--space-2:12px;--space-3:16px;--space-4:24px;--space-5:32px}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;min-width:320px;background:var(--color-background);color:var(--color-text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}.portal-shell{min-height:100dvh}.portal-container{width:min(100% - 32px,1100px);margin:auto}.page-enter{animation:page-enter .3s ease both}.topbar{height:72px;display:flex;align-items:center;border-bottom:1px solid var(--color-border);background:rgba(255,255,255,.94);backdrop-filter:blur(16px);position:sticky;top:0;z-index:20;padding-top:env(safe-area-inset-top)}.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}.brand-logo{display:block;width:auto;max-width:168px;max-height:45px;object-fit:contain}.header-user{min-width:0;text-align:right}.header-user strong{display:block;font-size:13px}.header-user span{display:block;color:var(--color-muted);font-size:11px;margin-top:2px}.icon-button,.back-button{width:42px;height:42px;border:1px solid var(--color-border);border-radius:var(--radius-sm);display:inline-flex;align-items:center;justify-content:center;background:var(--color-surface);color:var(--color-text);transition:transform .18s,background .18s,border-color .18s}.icon-button svg,.back-button svg{width:20px;height:20px}.icon-button:hover,.back-button:hover{background:#fafafa;border-color:#d5d8dc;transform:translateY(-1px)}.icon-button:active,.button:active{transform:translateY(1px)}.inner-topbar{display:grid;grid-template-columns:42px 1fr 42px;align-items:center}.page-title{text-align:center;font-size:15px;font-weight:800;letter-spacing:-.2px}.page-main{padding:28px 0 56px}.student-summary{display:flex;gap:13px;align-items:center;padding:15px 16px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.avatar,.icon-box{flex:0 0 auto;width:48px;height:48px;display:grid;place-items:center;border-radius:15px;background:var(--color-red-soft);color:var(--color-primary);font-weight:900;font-size:17px}.student-copy{min-width:0;flex:1}.student-name{font-size:15px;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.student-meta{margin-top:3px;color:var(--color-muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:6px 9px;font-size:10px;font-weight:800;letter-spacing:.25px}.badge-success{color:#15803d;background:var(--color-success-soft)}.badge-success:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--color-success)}.hero{position:relative;overflow:hidden;padding:32px;border-radius:var(--radius-lg);color:#fff;background:linear-gradient(135deg,#17181b 0%,#28282b 68%,#50151a 100%);box-shadow:var(--shadow-md)}.hero:after{content:"";position:absolute;width:280px;height:280px;right:-110px;top:-165px;border-radius:50%;background:radial-gradient(circle,rgba(215,25,32,.48),transparent 68%)}.hero>*{position:relative;z-index:1}.eyebrow{display:inline-flex;align-items:center;gap:7px;padding:7px 10px;border:1px solid rgba(255,255,255,.15);border-radius:999px;background:rgba(255,255,255,.1);font-size:10px;font-weight:800;letter-spacing:.35px}.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:#4ade80}.hero h1{max-width:650px;margin:16px 0 8px;font-size:clamp(28px,4vw,40px);line-height:1.08;letter-spacing:-1px}.hero p{max-width:580px;color:#d7d9df;font-size:14px;line-height:1.6}.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:24px}.info-cell{padding:13px 15px;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-sm);background:rgba(255,255,255,.08)}.info-cell span{display:block;margin-bottom:5px;color:#b7bbc4;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.4px}.info-cell strong{display:block;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.section{margin-top:34px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:16px}.section-heading h2{margin:0;font-size:20px;letter-spacing:-.45px}.section-heading p{margin:4px 0 0;color:var(--color-muted);font-size:12px}.action-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.action-card{position:relative;min-height:184px;padding:20px;display:flex;flex-direction:column;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s,border-color .2s}.action-card:not(.is-disabled):hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#d6d9dd}.action-card .icon-box{width:48px;height:48px;margin-bottom:21px}.action-card h3{margin:0 0 7px;font-size:15px}.action-card p{margin:0;color:var(--color-muted);font-size:12px;line-height:1.5}.action-card .arrow{position:absolute;top:18px;right:18px;color:#9ca3af;font-size:21px;transition:transform .18s}.action-card:hover .arrow{transform:translateX(3px)}.action-primary{border-color:#fecdd3}.action-primary .icon-box{background:var(--color-red-soft);color:var(--color-primary)}.icon-blue{color:#2563eb;background:#eff6ff}.icon-orange{color:#c2410c;background:#fff7ed}.icon-purple{color:#7c3aed;background:#f5f3ff}.is-disabled{opacity:.67;cursor:default}.coming{margin-top:auto;padding-top:15px;color:#9ca3af;font-size:10px;font-weight:800;letter-spacing:.35px;text-transform:uppercase}.button{min-height:50px;border:0;border-radius:var(--radius-sm);display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 18px;background:var(--color-primary);color:#fff;font-weight:800;transition:background .18s,transform .15s,box-shadow .18s}.button:hover{background:var(--color-primary-hover);box-shadow:0 9px 20px rgba(215,25,32,.2)}.button-secondary{background:var(--color-text)}.button-secondary:hover{background:#2b2d32}.scanner-layout{width:min(100%,600px);margin:auto}.scanner-intro{margin:20px 0 13px}.scanner-intro h1{margin:0 0 5px;font-size:24px;letter-spacing:-.6px}.scanner-intro p{margin:0;color:var(--color-muted);font-size:13px;line-height:1.5}.scanner{position:relative;overflow:hidden;width:100%;height:min(51dvh,430px);min-height:250px;border-radius:var(--radius-lg);background:#15171b;box-shadow:var(--shadow-md)}#video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:none}#canvas{display:none}.scanner-placeholder{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px;color:#fff;text-align:center;background:radial-gradient(circle at center,rgba(215,25,32,.2),transparent 54%),#15171b}.scanner-placeholder .icon-box{margin-bottom:15px;color:#fff;background:rgba(255,255,255,.1)}.scanner-placeholder span{margin-top:6px;color:#b7bbc4;font-size:13px}.scan-frame{display:none;position:absolute;z-index:2;inset:17%;border:3px solid rgba(255,255,255,.9);border-radius:18px;box-shadow:0 0 0 999px rgba(0,0,0,.08)}.scan-line{position:absolute;left:7%;right:7%;top:8%;height:2px;background:#fb4d54;box-shadow:0 0 13px #fb4d54;animation:scan 2s ease-in-out infinite}.status{display:none;margin-top:10px;padding:12px 14px;border-radius:var(--radius-sm);font-size:13px;line-height:1.45}.status.info{display:block;background:#eff6ff;color:#1d4ed8}.status.error{display:block;background:var(--color-red-soft);color:#b9151b}.status.success{display:block;background:var(--color-success-soft);color:#15803d}.scanner-note{margin:12px 0 0;color:var(--color-muted);font-size:11px;line-height:1.5}.success-screen{display:none;margin-top:18px;padding:32px 20px;text-align:center;border:1px solid #bbf7d0;border-radius:var(--radius-lg);background:var(--color-success-soft)}.success-icon{width:68px;height:68px;margin:0 auto 15px;display:grid;place-items:center;border-radius:50%;background:var(--color-success);color:#fff;font-size:33px;font-weight:900;animation:success-pop .35s ease both}.success-screen h2{margin:0 0 7px;font-size:22px}.success-screen p{margin:0;color:var(--color-muted);font-size:14px}.success-class{margin:18px auto;max-width:330px;padding:13px;border-radius:var(--radius-sm);background:#fff;font-weight:800}.summary-hero{margin-top:20px}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:22px}.stat{padding:13px;border:1px solid rgba(255,255,255,.11);border-radius:var(--radius-sm);background:rgba(255,255,255,.08)}.stat span{display:block;color:#b7bbc4;font-size:10px}.stat strong{display:block;margin:5px 0;font-size:22px}.latest,.record,.empty,.qr-cta{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);box-shadow:var(--shadow-sm)}.latest{display:flex;align-items:center;gap:12px;margin:20px 0;padding:15px}.latest .icon-box{width:43px;height:43px;background:var(--color-success-soft);color:var(--color-success)}.latest small,.record-meta{color:var(--color-muted);font-size:11px}.latest strong{display:block;margin:2px 0;font-size:14px}.record-count{color:var(--color-muted);font-size:10px;font-weight:800;letter-spacing:.35px}.timeline{position:relative;margin-left:12px;padding-left:22px;border-left:1px solid var(--color-border)}.record{position:relative;margin-bottom:12px;padding:15px}.record:before{content:"✓";position:absolute;left:-31px;top:17px;width:18px;height:18px;display:grid;place-items:center;border-radius:50%;background:var(--color-success);color:#fff;font-size:10px;font-weight:900}.record-top{display:flex;gap:10px;justify-content:space-between;align-items:start}.record-class{font-size:14px;font-weight:800}.record-meta{display:flex;gap:8px;margin-top:7px}.empty{padding:42px 20px;text-align:center}.empty .icon-box{margin:0 auto 14px}.empty h3{margin:0;font-size:16px}.empty p{margin:7px auto 17px;max-width:320px;color:var(--color-muted);font-size:12px;line-height:1.55}.qr-cta{display:flex;align-items:center;gap:13px;margin-top:24px;padding:15px;transition:transform .2s,box-shadow .2s}.qr-cta:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.qr-cta .icon-box{width:44px;height:44px}.qr-cta strong{display:block;font-size:13px}.qr-cta span{display:block;margin-top:3px;color:var(--color-muted);font-size:11px}.qr-cta .arrow{margin-left:auto;color:var(--color-primary);font-size:22px}.auth-page{min-height:100dvh;display:grid;place-items:center;padding:32px 16px;background:radial-gradient(circle at 12% 2%,rgba(215,25,32,.08),transparent 28%),var(--color-background)}.auth-wrap{width:min(100%,440px)}.auth-brand{text-align:center;margin-bottom:25px}.auth-brand .brand-logo{margin:0 auto 17px;max-width:185px;max-height:58px}.auth-brand h1{margin:0 0 6px;font-size:25px;letter-spacing:-.55px}.auth-brand p{margin:0;color:var(--color-muted);font-size:14px}.auth-card{padding:30px;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);box-shadow:var(--shadow-md)}.auth-card h2{margin:0 0 7px;font-size:21px}.auth-card>p{margin:0 0 25px;color:var(--color-muted);font-size:14px;line-height:1.55}.field{margin-bottom:17px}.field label{display:block;margin-bottom:7px;font-size:13px;font-weight:700}.field input{width:100%;height:50px;padding:0 13px;border:1px solid var(--color-border);border-radius:var(--radius-sm);outline:0;background:#fff;color:var(--color-text);transition:border-color .18s,box-shadow .18s}.field input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(215,25,32,.1)}.field input.input-error{border-color:#e11d48}.field-error{margin-top:6px;color:#b4233c;font-size:12px}.form-error{margin-bottom:18px;padding:12px 13px;border:1px solid #fecdd3;border-radius:var(--radius-sm);background:var(--color-red-soft);color:#a20d26;font-size:13px;line-height:1.55}.remember{display:flex;gap:8px;align-items:center;margin:-1px 0 20px;color:var(--color-muted);font-size:13px}.remember input{width:16px;height:16px;accent-color:var(--color-primary)}.auth-switch{text-align:center;margin:22px 0 0;color:var(--color-muted);font-size:14px}.auth-switch a{color:var(--color-primary);font-weight:800}.password-hint{margin-top:6px;color:var(--color-muted);font-size:12px}.auth-footer{text-align:center;margin-top:22px;color:#9ca3af;font-size:12px}@keyframes page-enter{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes scan{50%{top:90%}}@keyframes success-pop{from{transform:scale(.7);opacity:0}to{transform:scale(1);opacity:1}}@media(max-width:720px){.topbar{height:64px}.header-user{display:none}.page-main{padding:18px 0 calc(88px + env(safe-area-inset-bottom))}.hero{padding:24px 20px;border-radius:22px}.hero h1{font-size:28px}.info-grid{grid-template-columns:1fr 1fr;gap:8px;margin-top:18px}.info-cell:last-child{grid-column:1/-1}.action-grid{grid-template-columns:repeat(2,1fr);gap:11px}.action-card{min-height:162px;padding:16px}.action-card .icon-box{width:44px;height:44px;margin-bottom:16px}.action-primary{grid-column:1/-1;min-height:118px;display:grid;grid-template-columns:48px 1fr 20px;grid-template-rows:auto auto;column-gap:13px;align-items:center}.action-primary .icon-box{grid-row:1/3;margin:0}.action-primary h3{align-self:end;margin:0}.action-primary p{grid-column:2;align-self:start}.action-primary .arrow{position:static;grid-area:1/3/3}.scanner-layout{width:100%}.scanner-intro{margin:14px 0 10px}.scanner-intro h1{font-size:20px}.scanner-intro p{font-size:11px}.scanner{height:clamp(245px,calc(100dvh - 330px),380px);min-height:0;border-radius:20px}.student-summary{padding:10px 12px;border-radius:14px}.avatar{width:40px;height:40px;border-radius:12px;font-size:15px}.student-name{font-size:13px}.student-meta{font-size:11px}.badge{font-size:9px;padding:5px 7px}.summary-hero{margin-top:14px}.stat-grid{gap:7px;margin-top:17px}.stat{padding:10px}.stat strong{font-size:18px}.section{margin-top:27px}.section-heading h2{font-size:18px}.auth-page{display:block;padding-top:calc(30px + env(safe-area-inset-top));padding-bottom:calc(26px + env(safe-area-inset-bottom))}.auth-wrap{margin:auto}.auth-brand{margin-bottom:20px}.auth-card{padding:25px 20px;border-radius:20px}}@media(max-width:360px){.portal-container{width:min(100% - 24px,1100px)}.hero h1{font-size:26px}.scanner{height:calc(100dvh - 310px)}.scanner-intro p{display:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}

.student-bottom-nav{display:none;position:fixed;left:0;right:0;bottom:0;z-index:9999}
@media(max-width:768px){.page-main{padding-bottom:calc(92px + env(safe-area-inset-bottom))}.student-bottom-nav{position:fixed;z-index:9999;right:0;bottom:0;left:0;display:block;padding-bottom:env(safe-area-inset-bottom);border-top:1px solid var(--color-border);background:rgba(255,255,255,.94);box-shadow:0 -6px 18px rgba(21,23,27,.05);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.student-bottom-nav__inner{display:grid;grid-template-columns:repeat(4,1fr);width:min(100%,720px);height:68px;margin:auto;padding:5px 8px}.student-bottom-nav__item{min-width:0;border:0;border-radius:12px;background:transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--color-muted);font-size:10px;font-weight:650;line-height:1;transition:color .18s,background .18s,transform .15s}.student-bottom-nav__item svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s}.student-bottom-nav__item.is-active{color:var(--color-primary);font-weight:800;background:rgba(215,25,32,.07)}.student-bottom-nav__item:active{transform:scale(.96)}.student-bottom-nav__item.is-disabled{opacity:.52;cursor:default}@media(hover:hover) and (pointer:fine){.student-bottom-nav__item:not(.is-disabled):hover{color:var(--color-primary);background:rgba(215,25,32,.05)}.student-bottom-nav__item:not(.is-disabled):hover svg{transform:translateY(-1px)}}}