:root{--navy:#112b4a;--navy2:#1c4169;--gold:#d5aa63;--ink:#1b2e46;--muted:#6a788a;--line:#e3e9f0;--bg:#f4f7fb;--green:#168373;--red:#b03c42;--shadow:0 15px 48px #132e4e0a}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--ink);font-family:Tahoma,Arial,sans-serif;font-size:15px;line-height:1.85}button,input,select,textarea{font:inherit}a{color:inherit;text-decoration:none}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}button:focus-visible,a:focus-visible{outline:3px solid var(--gold);outline-offset:4px}button{border:0}input,textarea,select{width:100%;background:#fff;border:1px solid #d6dee8;border-radius:12px;padding:11px 13px;color:var(--ink);outline:0}input:focus,select:focus,textarea:focus{border-color:var(--navy2);box-shadow:0 0 0 3px #244d7720}input[type=checkbox]{width:19px;height:19px;accent-color:var(--navy)}label{display:block;font-size:13px;font-weight:bold}label input,label select,label textarea{margin-top:6px}input[dir=ltr]{text-align:left}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(32px,4.5vw,59px);line-height:1.5;letter-spacing:-1.7px}h2{font-size:29px;line-height:1.5}h3{font-size:18px}small,.muted{color:var(--muted)}.wrap{max-width:1240px;margin:auto;padding:0 32px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 23px;border-radius:12px;background:var(--navy);color:white;font-weight:bold;font-size:14px;transition:transform .15s,background .15s}.btn:hover{background:var(--navy2);transform:translateY(-1px)}.btn.gold{background:var(--gold);color:var(--navy)}.btn.light{background:white;color:var(--navy);border:1px solid var(--line)}.btn.soft{background:#e9f0f8;color:var(--navy)}.btn.danger{background:#fff0f0;color:var(--red)}.btn.small{padding:7px 12px;font-size:12px}.pill{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:100px;background:#e8f5f0;color:var(--green);font-size:12px;font-weight:bold}.pill.gold{background:#fbf3e6;color:#8f672c}.pill.gray{background:#ecf0f5;color:var(--muted)}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.between{justify-content:space-between}.gap{gap:24px}.eyebrow{font-size:12px;letter-spacing:2px;color:var(--gold);font-weight:bold}.section{padding:68px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}.section-head h2{margin-bottom:8px}.section-head p{margin:0;color:var(--muted)}.card{background:white;border:1px solid var(--line);border-radius:21px;padding:26px;box-shadow:var(--shadow)}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.topbar{background:var(--navy);color:#d8e2ef;text-align:center;font-size:11px;padding:7px}.header{height:86px;display:flex;align-items:center;justify-content:space-between;gap:24px}.header-shell{background:#ffffffec;position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);backdrop-filter:blur(15px)}.brand{display:flex;align-items:center;gap:11px;background:none;color:var(--navy);padding:0;text-align:right}.brand img{width:47px;height:47px}.brand strong{display:block;font-size:20px;line-height:1.5}.brand small{display:block;font-size:9px;letter-spacing:2px;direction:ltr;text-align:right}.nav{display:flex;gap:26px;color:var(--muted);font-size:13px}.nav a:hover{color:var(--navy)}.hero{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;align-items:center;padding:62px 0}.hero h1{margin:17px 0}.hero h1 em{font-style:normal;color:#aa7c38;position:relative}.hero p{font-size:16px;color:var(--muted);max-width:510px;margin-bottom:26px}.hero .footnote{margin-top:18px;font-size:11px}.math-card{position:relative;min-height:420px;border-radius:32px;background:radial-gradient(circle at 25% 20%,#2a527a,transparent 53%),linear-gradient(140deg,#152f50,#0a2039);color:white;padding:36px;overflow:hidden;box-shadow:0 24px 55px #112b4a22}.math-grid{position:absolute;inset:0;opacity:.1;background-image:linear-gradient(#fff4 1px,transparent 1px),linear-gradient(90deg,#fff4 1px,transparent 1px);background-size:35px 35px;transform:perspective(450px) rotateX(12deg)}.math-card .orbit{position:absolute;border:1px solid #ffffff23;border-radius:50%;height:290px;width:290px;left:17%;top:50px;transform:rotate(-25deg)}.math-card .orbit.two{transform:rotate(50deg);width:200px;height:340px;top:20px;left:27%}.formula{font:italic 31px Georgia,serif;position:relative;direction:ltr;color:#dbe8f7}.formula.top{text-align:left;opacity:.7}.math-center{position:relative;text-align:center;margin:38px 0 25px}.math-center .symbol{font:80px Georgia,serif;color:var(--gold);line-height:1.3}.math-center h3{font-size:22px;margin:0}.math-center p{font-size:12px;color:#aebed0;margin:8px auto}.math-footer{position:relative;display:flex;justify-content:space-between;align-items:center;border-top:1px solid #ffffff25;padding-top:18px;color:#d5e0ed;font-size:11px}.math-footer strong{font-size:23px;color:var(--gold)}.trust{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;padding:26px;background:white;border:1px solid var(--line);border-radius:20px}.trust>div{display:flex;align-items:center;justify-content:center;gap:15px;border-left:1px solid var(--line)}.trust>div:last-child{border:0}.trust strong{font-size:21px;color:var(--navy)}.trust small{display:block;font-size:11px}.iconbox{width:45px;height:45px;background:#edf2f8;color:var(--navy2);border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}.course{position:relative;overflow:hidden;padding:0}.course-band{background:#edf2f8;padding:28px;min-height:115px;position:relative}.course-band.gold{background:#fbf1df}.course-band.green{background:#e8f3f1}.course-band .decor{position:absolute;left:20px;top:5px;opacity:.17;font:70px Georgia,serif;color:var(--navy)}.course-content{padding:24px}.course-content p{font-size:13px;color:var(--muted)}.course-content .btn{width:100%;margin-top:16px}.about{background:#fff;border-block:1px solid var(--line)}.about-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:45px;align-items:center}.portrait{background:linear-gradient(150deg,#e6ecf3,#f6f8fb);border-radius:26px;min-height:350px;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;overflow:hidden;border:1px solid var(--line)}.portrait img{width:100%;height:380px;object-fit:cover}.portrait .placeholder-icon{font-size:70px;opacity:.6}.portrait p{font-size:12px;color:var(--muted)}.portrait .photo-label{position:absolute;bottom:18px;right:18px;background:white;border-radius:13px;padding:12px 19px;box-shadow:var(--shadow)}.portrait .photo-label strong{display:block}.details{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:25px 0}.details>div{background:var(--bg);border-radius:12px;padding:14px}.details small{display:block;font-size:11px}.details strong{font-size:13px}.info-banner{border-radius:22px;padding:32px;background:var(--navy);color:white;display:flex;align-items:center;justify-content:space-between;gap:25px}.info-banner p{color:#b7c8dc;font-size:13px;margin-bottom:0}.footer{border-top:1px solid var(--line);padding:28px 0;margin-top:35px;font-size:12px;color:var(--muted)}.footer .brand strong{font-size:17px}.footer .brand img{width:36px;height:36px}.notice{border:1px solid #ecdaba;background:#fff9ec;border-radius:14px;padding:15px 18px;font-size:13px;color:#7b5c2f;margin-bottom:22px}.empty{padding:45px 20px;text-align:center;border:1px dashed #ced9e5;border-radius:17px;color:var(--muted)}.empty .big{font-size:36px;display:block;margin-bottom:8px}.shell{display:grid;grid-template-columns:235px minmax(0,1fr);gap:28px;max-width:1460px;margin:auto;padding:26px 28px;align-items:start}.sidebar{position:sticky;top:112px;background:white;border:1px solid var(--line);border-radius:21px;padding:20px 12px}.side-label{font-size:10px;color:var(--muted);padding:4px 15px 10px}.side-link{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:12px;margin:3px 0;font-size:13px;color:var(--muted)}.side-link.active{background:var(--navy);color:white}.side-link:hover:not(.active){background:var(--bg)}.side-link .side-icon{width:20px;font-size:17px}.side-bottom{border-top:1px solid var(--line);margin-top:15px;padding:20px 14px 4px;font-size:11px;color:var(--muted)}.main-title{margin:10px 0 26px;display:flex;justify-content:space-between;align-items:center;gap:16px}.main-title h1{font-size:27px;letter-spacing:-.6px;margin-bottom:2px}.main-title p{font-size:12px;color:var(--muted);margin:0}.stat{padding:22px}.stat .row{justify-content:space-between}.stat b{display:block;font-size:32px;margin:14px 0 1px;font-weight:500}.stat small{font-size:11px}.stat .iconbox{width:38px;height:38px;font-size:18px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;white-space:nowrap;font-size:12px;text-align:right}th{font-weight:normal;color:var(--muted);background:#f8fafc;font-size:11px}th,td{padding:14px;border-bottom:1px solid var(--line)}td strong{font-size:12px}td small{display:block;font-size:10px}.table-card{padding:0;overflow:hidden}.table-top{padding:22px}.code{font-family:Consolas,monospace;direction:ltr;display:inline-block;color:#315d85;letter-spacing:1px;background:#eef4fa;border-radius:6px;padding:3px 7px}.pager{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:20px}.search{max-width:330px}.status{font-size:11px;padding:4px 9px;border-radius:20px;background:#eaf5ef;color:#25806b}.status.pending{background:#fff3dc;color:#996c24}.status.cancelled{background:#fff0f0;color:var(--red)}.timeline{border-right:2px solid var(--line);margin-right:8px;padding-right:25px}.timeline>div{position:relative;margin-bottom:25px}.timeline>div:before{content:'';position:absolute;right:-32px;top:8px;width:12px;height:12px;border-radius:50%;background:var(--gold);border:3px solid white}.timeline h3{margin-bottom:5px;font-size:14px}.timeline p{font-size:12px;color:var(--muted);margin:0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.form-grid .full{grid-column:1/-1}.form-stack{display:grid;gap:16px}.hint{font-size:11px;color:var(--muted);font-weight:normal;display:block;margin-top:5px}.check{display:flex;align-items:center;gap:10px;font-size:12px;font-weight:normal}.form-actions{display:flex;gap:10px;justify-content:flex-end;border-top:1px solid var(--line);padding-top:20px;margin-top:22px}.form-error{color:var(--red);background:#fff0f0;padding:10px 13px;border-radius:8px;font-size:12px;margin-top:12px}.form-error:empty{display:none}dialog{width:min(720px,94vw);max-height:90dvh;overflow:auto;border:0;border-radius:23px;padding:30px;color:var(--ink);box-shadow:0 30px 100px #0004}dialog::backdrop{background:#0b2038a8;backdrop-filter:blur(5px)}.modal-head{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:20px}.modal-head h2{font-size:22px;margin:0}.close{width:34px;height:34px;border-radius:50%;background:var(--bg);color:var(--navy);font-size:22px}.login-intro{text-align:center;margin-bottom:24px}.login-intro img{width:65px;margin-bottom:12px}.login-intro p{font-size:13px;color:var(--muted)}.form-width{max-width:430px;margin:auto}.success{padding:22px;background:#eaf7f1;border:1px solid #bbddcc;border-radius:15px;color:#226f57;white-space:pre-line}.success .code{font-size:20px;margin-top:12px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--navy);color:white;border-radius:12px;padding:12px 24px;max-width:90%;box-shadow:0 8px 30px #0002;z-index:100;font-size:13px;display:none}.skip{position:fixed;top:-100px;z-index:200;background:white;padding:12px}.skip:focus{top:0}.loading{min-height:50vh;display:grid;place-items:center;color:var(--muted)}.mb{margin-bottom:24px}.mt{margin-top:26px}.pre{white-space:pre-wrap;font-size:12px;background:#f5f7fa;border:1px solid var(--line);border-radius:12px;padding:15px;overflow-wrap:anywhere}.offline{background:#fff3dc;text-align:center;font-size:12px;padding:8px}.student-card{background:var(--navy);color:white}.student-card h2{color:white}.student-card .muted{color:#bbcbdf}.student-card .code{background:#fff2;color:#ebd1a5;font-size:20px}.arch-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.arch-grid .card{box-shadow:none}.arch-grid p{font-size:12px;color:var(--muted)}@media(min-width:1500px){.wrap{max-width:1300px}}@media(max-width:1100px){.nav{gap:14px}.hero{gap:28px}.grid4{grid-template-columns:repeat(2,1fr)}.shell{grid-template-columns:200px minmax(0,1fr);padding:22px 18px;gap:18px}.header{gap:15px}.header .btn{padding:10px 15px}.brand strong{font-size:17px}}@media(max-width:800px){.nav{display:none}.wrap{padding-inline:20px}.hero{grid-template-columns:1fr;padding:35px 0;gap:30px}.hero p{max-width:100%}.hero h1{font-size:39px}.math-card{min-height:340px;max-width:600px;width:100%;margin:auto}.math-center{margin:20px 0}.math-center .symbol{font-size:65px}.trust{padding:20px 10px;gap:5px}.trust>div{gap:8px}.trust .iconbox{display:none}.trust strong{font-size:17px}.trust small{font-size:10px}.grid3{grid-template-columns:1fr}.about-layout{grid-template-columns:1fr}.portrait{min-height:280px;max-width:500px;width:100%;margin:auto}.section{padding:45px 0}.section-head{align-items:start;flex-direction:column}.shell{display:flex;flex-direction:column;padding:18px 14px}.sidebar{width:100%;position:static;padding:9px;display:flex;overflow:auto;gap:4px;border-radius:14px}.side-label,.side-bottom{display:none}.side-link{flex-shrink:0;padding:9px 12px;margin:0;font-size:12px}.shell main{width:100%}.main-title{margin:10px 0 20px}.main-title h1{font-size:24px}.grid2,.arch-grid{grid-template-columns:1fr}.details{gap:10px}.info-banner{flex-direction:column;align-items:start}.header{height:auto;min-height:75px;gap:10px;flex-wrap:wrap;padding-block:12px}.header .btn{font-size:10px;padding:8px}.header>.row{gap:5px;flex-wrap:nowrap;margin-right:auto}.header .brand{flex:0 0 auto}.brand img{width:32px;height:32px}.brand strong{font-size:13px;white-space:nowrap}.brand small{font-size:6px}.footer .between{align-items:start;gap:20px}.table-top{padding:18px}.search{max-width:none}.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}.card{padding:21px}.table-card{padding:0}dialog{padding:23px}.main-title .btn{font-size:11px;padding:9px 12px}.stat{padding:18px}.stat b{font-size:28px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}@media print{.header-shell,.sidebar,.footer,button,.btn,.topbar{display:none!important}body{background:white}.shell{display:block}.card{box-shadow:none}}

/* Phase-two operations UI */
.ops-filters{display:flex;align-items:end;flex-wrap:wrap;gap:15px}.ops-filters label{flex:1;min-width:150px}.ops-filters .btn{flex-shrink:0}.metric{background:#f1f5fa;border:1px solid #dfe7f1;border-radius:14px;padding:16px}.metric small{display:block;font-size:11px}.metric strong{display:block;margin-top:7px;font-size:20px}.attendance-list{display:grid;gap:14px}.attendance-row{padding:16px;border:1px solid var(--line);border-radius:14px}.attendance-row>.row{margin-top:13px;flex-wrap:nowrap}.attendance-row select{width:125px;flex-shrink:0}.attendance-row .row input{min-width:70px}.attendance-row .btn{flex-shrink:0}.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}.sidebar{max-height:calc(100dvh - 130px);overflow:auto}@media(max-width:800px){.sidebar{max-height:none}.ops-filters{padding:18px}.ops-filters label{min-width:115px}.attendance-row{padding:13px}.attendance-row>.row{flex-wrap:wrap}.attendance-row .row input{flex:1}.attendance-row select{width:105px}.metric{padding:13px}.metric strong{font-size:18px}}

.offline-badge{position:fixed;bottom:14px;right:16px;z-index:80;background:#153653;color:white;border:1px solid #56728a;padding:8px 14px;border-radius:22px;font-size:11px;box-shadow:0 4px 15px #0002}.offline-badge.is-offline{background:#895f1c}.queue-row{padding:20px 0;border-bottom:1px solid var(--line)}.math-prompt{padding:16px;background:#f2f6fb;border:1px solid var(--line);border-radius:12px;font-size:17px;white-space:pre-wrap;line-height:2}input[type=radio]{width:18px;height:18px;accent-color:var(--navy)}@media print{.offline-badge{display:none}}

.queue-row strong{overflow-wrap:anywhere;min-width:0}.queue-row .row{overflow-wrap:anywhere}

/* Phase 4: connected learning and safe-area-aware mobile navigation */
.bottom-navigation{display:none}.resource-links,.lecture-timeline,.result-grid{display:grid;gap:12px;margin-top:16px}.resource-link{display:flex;flex-direction:column;gap:6px;padding:14px;border:1px solid #dce5ee;border-radius:14px;background:#f7fafc;text-align:right;text-decoration:none;color:var(--navy);font:inherit;min-width:0}.resource-link small{color:#63778b}.quick-links{display:flex;flex-wrap:wrap;gap:10px}.quick-links a{padding:12px 16px;border:1px solid #dce5ee;border-radius:12px;background:#f4f8fc;text-decoration:none;color:var(--navy)}.lecture-timeline{grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}.lecture-card{padding:16px;border:1px solid #dce5ee;border-right:4px solid var(--gold);border-radius:12px}.result-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr))}.result-tile{display:grid;gap:10px;padding:16px;background:#f5faf8;border:1px solid #cce0d9;border-radius:14px;text-align:right;color:var(--navy);font:inherit;cursor:pointer}.resource-preview{display:block;width:100%;height:min(72dvh,800px);border:1px solid #dce5ee;border-radius:12px;margin-top:14px}.exam-top{position:sticky;top:0;z-index:5;display:flex;gap:16px;align-items:center;flex-wrap:wrap;background:#fff}.exam-top #exam-timer{font:700 24px monospace;direction:ltr}.exam-questions{display:grid;gap:18px}.math-prompt{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.9;unicode-bidi:plaintext}.answer-options{display:grid;gap:10px;margin-top:18px}.answer-option{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid #dce5ee;border-radius:10px;cursor:pointer;overflow-wrap:anywhere;min-width:0}.answer-option input{width:20px;height:20px;flex-shrink:0}.answer-option:has(input:checked){border-color:var(--navy);background:#eef4fa}.answer-option.is-correct{border-color:#1f8261;background:#eefbf5}.answer-option.is-wrong{border-color:#bc4551;background:#fff1f2}.answer-review{margin-top:16px;padding:16px;border-radius:10px;background:#eefbf5}.honor-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;border-bottom:1px solid #edf0f5;padding:14px 0}.honor-row strong{flex:1}.honor-medal{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:#f3e4c7;color:#79521e;font-weight:bold}.chat-card{max-width:850px;margin:auto}.chat-log{display:flex;flex-direction:column;gap:15px;max-height:55dvh;min-height:220px;overflow:auto;padding:8px}.chat-bubble{white-space:pre-wrap;line-height:1.9;padding:15px 18px;max-width:92%;border-radius:16px;background:#f0f5fa;border:1px solid #dce5ee}.chat-bubble.user{align-self:flex-end;background:#112b4a;color:white}.chat-form{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.chat-form input{flex:1;min-width:140px}.chat-form .form-error{width:100%}.more-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.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}dialog{max-height:92dvh;overflow:auto}.form-grid>*{min-width:0}.form-grid input,.form-grid select{max-width:100%}.member-main{min-height:65dvh}
@media(max-width:900px){body{padding-bottom:calc(88px + env(safe-area-inset-bottom))}.bottom-navigation{position:fixed;inset:auto 8px max(8px,env(safe-area-inset-bottom));z-index:30;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));background:rgba(255,255,255,.98);border:1px solid #dbe3ed;border-radius:20px;box-shadow:0 -5px 28px #112b4a16;padding:7px 3px}.bottom-navigation a,.bottom-navigation button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;min-height:54px;min-width:0;text-decoration:none;color:#64768a;border:0;background:none;font:inherit;border-radius:13px;cursor:pointer}.bottom-navigation span{font-size:21px}.bottom-navigation small{font-size:10px;white-space:nowrap}.bottom-navigation .active{background:#edf4f8;color:#112b4a;font-weight:bold}.offline-badge{bottom:calc(88px + env(safe-area-inset-bottom))}.header .brand strong{font-size:14px}.header .brand small{font-size:9px}.header .row{gap:5px}.header .row .btn{padding:8px;font-size:11px}.header .row{flex-wrap:wrap;justify-content:flex-end}.header .brand{min-width:0}.header.wrap{gap:8px}.exam-top{position:static;gap:10px}.exam-question{padding:18px}.more-grid{gap:8px}.more-grid .resource-link{padding:12px;font-size:13px}.chat-bubble{max-width:100%;font-size:14px}}

.member-main{padding:38px 28px}.main-title>div{min-width:0;max-width:100%}.main-title h1{letter-spacing:0}.main-title{flex-wrap:wrap}@media(max-width:900px){.member-main{padding:28px 16px}.main-title{align-items:flex-start}.main-title h1{font-size:23px}.main-title p{line-height:1.9}#toast{bottom:calc(145px + env(safe-area-inset-bottom));font-size:12px}}