:root{--ink:#202438;--muted:#686f84;--primary:#5950cb;--primary-dark:#4239aa;--line:#e8e9f1;--surface:#fff;--bg:#f7f8fc;--radius:16px;--sidebar:236px}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit}
button,a,input,textarea,select{touch-action:manipulation}
button{cursor:pointer;background:#fff;color:#51576e;border:1px solid #e0e2ec;border-radius:9px;padding:9px 16px;margin:4px 6px 4px 0;transition:background .15s,border-color .15s,transform .15s}
button:hover{background:#f4f3ff;border-color:#beb9e9;color:var(--primary)}
button:active{transform:translateY(1px)}
button.primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 4px 10px #5850cb16}
button.primary:hover{background:var(--primary-dark)}
button:disabled{cursor:default;opacity:.5;transform:none}
a{color:var(--primary);text-underline-offset:4px}
button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #b7b1fa;outline-offset:3px}
h1,h2,h3,h4,p{margin-top:0}
h2{font-size:25px;line-height:1.45;letter-spacing:-.6px;margin-bottom:22px;font-weight:650}
h3{font-size:19px;letter-spacing:-.3px;margin:26px 0 16px;font-weight:650}
h4{font-size:15px}
p{margin-bottom:14px}
small,.notice{color:var(--muted)}
[hidden]{display:none!important}
.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column;z-index:20}
.brand{display:flex;gap:11px;align-items:center;padding:30px 24px 32px;text-decoration:none;color:var(--ink)}
.brand-symbol{height:40px;width:40px;display:grid;place-items:center;background:linear-gradient(135deg,#7770e4,#4940b6);border-radius:12px;color:white;font-size:21px;box-shadow:0 5px 14px #6156ca26}
.brand strong{font-size:20px;letter-spacing:1px;line-height:1.4;display:block}
.brand small{font-size:10px;letter-spacing:1.3px;display:block;margin-top:3px;color:#70758b}
.sidebar-scroll{flex:1;overflow-y:auto;padding:0 16px 20px}
#navigation{display:flex;flex-direction:column;gap:3px}
.nav-group-title{color:#a0a5b4;font-size:10px;letter-spacing:1.8px;padding:23px 14px 8px;font-weight:650}
.nav-group-title:first-child{padding-top:5px}
#navigation button{border:0;background:transparent;display:flex;align-items:center;text-align:left;gap:12px;padding:11px 15px;margin:0;width:100%;border-radius:9px;font-size:13px;color:#777c90;min-height:43px}
#navigation button:hover{background:#f8f7fd;color:var(--primary)}
#navigation button.active{background:#efedfc;color:var(--primary);font-weight:650}
#navigation button.active:after{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary);margin-left:auto}
.nav-icon{height:18px;width:18px;flex-shrink:0;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.sidebar-footer{margin:0 22px;padding:22px 0;border-top:1px solid var(--line);display:flex;gap:9px;align-items:flex-start;color:#7b8196;font-size:11px}
.sidebar-footer small{display:block;font-size:10px;color:#70758b}
.footer-dot{width:6px;height:6px;border-radius:50%;background:#7a74d8;margin-top:7px}
.app-shell{margin-left:var(--sidebar)}
.topbar{height:80px;padding:0 42px;background:#ffffffd9;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}
.breadcrumb{display:flex;gap:15px;align-items:center;font-size:12px;color:#969aab}
.breadcrumb strong{font-weight:500;color:#545a70}
.user-chip{display:flex;gap:10px;align-items:center;font-size:12px}
.user-chip small{display:block;font-size:10px;color:#70758b;max-width:220px;overflow:hidden;text-overflow:ellipsis}
.avatar{height:34px;width:34px;border:3px solid white;box-shadow:0 0 0 1px #e8e5f5;border-radius:50%;display:grid;place-items:center;background:#eeebfa;color:#7468b7;font-size:13px}
main{max-width:1460px;margin:auto;padding:34px 42px 20px;min-height:calc(100vh - 80px)}
section{padding:30px 32px;background:white;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 3px 12px #24234a02;margin-bottom:24px;min-width:0}
section.landing,section.dashboard{background:transparent;padding:0;border:0;box-shadow:none}
.eyebrow{color:#8b86b9;display:block;letter-spacing:1.7px;font-size:9px;font-weight:650;margin-bottom:12px}
.hero{position:relative;background:linear-gradient(112deg,#f0edfc 0%,#eeeffd 62%,#e8eafa 100%);border-radius:19px;overflow:hidden;min-height:310px;display:flex;padding:38px 40px;border:1px solid #e7e4f6}
.hero-copy{z-index:1;max-width:68%;position:relative}
.hero h2{font-size:35px;line-height:1.5;font-weight:650;letter-spacing:-1px;margin:0 0 15px;color:#302b60}
.hero p{font-size:12px;line-height:1.9;color:#70758b;margin-bottom:20px}
.hero .eyebrow{color:#8a80b0;font-size:9px}
.hero-actions{display:flex;gap:7px}
.hero-actions button{font-size:12px;padding:9px 19px}
.hero-actions button:not(.primary){background:#ffffff8a;border-color:#d9d4ed;color:#6c609a}
.hero-note{display:block;margin-top:17px;font-size:10px;color:#70758b}
.hero-art{position:absolute;right:25px;top:18px;bottom:0;width:310px;pointer-events:none}
.orbit{position:absolute;left:50%;top:50%;border-radius:50%;border:1px solid #b9b2e04d;transform:translate(-50%,-50%) rotate(-25deg)}
.orbit-one{width:240px;height:240px}
.orbit-two{width:310px;height:180px;border-style:dashed}
.art-center{position:absolute;left:102px;top:95px;width:110px;height:110px;border-radius:30px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(145deg,#fff,#e0dcfa);box-shadow:16px 18px 30px #7062ad19,inset 0 0 0 1px #ffffffa6;transform:rotate(-8deg);font-size:43px;line-height:1.3;color:#7565b1;font-weight:650}
.art-center span{font-size:9px;letter-spacing:3px;font-weight:400;color:#9d91b9}
.art-note{position:absolute;border:1px solid #ffffffb3;background:#ffffffda;backdrop-filter:blur(8px);border-radius:12px;padding:12px 15px;box-shadow:0 10px 30px #6860800c;color:#6c608f;font-size:11px;line-height:1.5}
.art-note small{display:block;color:#70758b;font-size:9px;padding-left:23px;margin-top:3px}
.art-note i{display:inline-grid;place-items:center;width:18px;height:18px;border-radius:6px;background:#eeebfa;color:#8673ba;font-style:normal;margin-right:6px}
.art-note-one{top:43px;right:3px;transform:rotate(5deg)}
.art-note-two{bottom:35px;left:5px;transform:rotate(-5deg)}
.art-dot{width:10px;height:10px;border:2px solid #fff;background:#aea4de;border-radius:50%;position:absolute;right:33px;bottom:65px;box-shadow:0 0 0 5px #c6bee333}
.section-heading{display:flex;justify-content:space-between;align-items:end;margin:31px 0 17px;gap:12px}
.section-heading .eyebrow{margin:0 0 5px;font-size:8px}
.section-heading h3{margin:0;font-size:19px}
.section-heading>p{font-size:11px;color:#70758b;margin:0 0 2px}
.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}
.feature-card{background:white;border:1px solid var(--line);border-radius:14px;padding:23px;position:relative}
.feature-icon{display:grid;place-items:center;width:39px;height:39px;border-radius:11px;background:#efedfc;color:#8778c9;margin-bottom:20px}
.feature-icon .nav-icon{width:21px;height:21px}
.feature-card:nth-child(2) .feature-icon{background:#eaf4f2;color:#5d9c93}
.feature-card:nth-child(3) .feature-icon{background:#fcf2e9;color:#c4a076}
.feature-card h3{font-size:15px;margin:0 0 9px}
.feature-card p{font-size:12px;color:#70758b;line-height:1.9;margin-bottom:17px}
.feature-card button{padding:0;border:0;color:#7b70bc;font-size:11px;background:none;display:flex;width:100%;justify-content:space-between;align-items:center;margin:0}
.feature-card button:hover{color:var(--primary-dark)}
.welcome-bottom{margin-top:22px;display:flex;gap:14px;align-items:center;padding:20px 23px;background:#f0f1f8;border-radius:13px}
.trust-mark{display:grid;place-items:center;width:30px;height:30px;background:white;color:#9b94bf;border-radius:50%;font-size:13px;flex-shrink:0}
.welcome-bottom strong{font-size:12px;font-weight:500;color:#777b95}
.welcome-bottom p{font-size:10px;color:#70758b;margin:3px 0 0}
.welcome-bottom button{margin-left:auto;border:0;background:transparent;white-space:nowrap;font-size:11px;color:#86809e}
.workspace-footer{display:flex;justify-content:space-between;gap:20px;color:#70758b;font-size:9px;padding:20px 2px 8px}
.workspace-footer>span:first-child{font-weight:600;letter-spacing:2px}
.page-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:23px;gap:12px}
.page-heading h2{margin:0;font-size:26px}
.page-heading .eyebrow{font-size:8px;margin-bottom:4px}
.page-heading>p{font-size:11px;color:#70758b;margin:0}
.dashboard .hero{min-height:235px;padding:31px 34px}
.dashboard .hero h2{font-size:28px}
.dashboard .hero-art{transform:scale(.83);transform-origin:center top;right:8px}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;margin-top:22px}
.stat-card{background:white;border:1px solid var(--line);border-radius:13px;padding:18px 21px;position:relative}
.stat-card .stat-label{color:#70758b;font-size:11px}
.stat-value{font-size:28px;font-weight:600;line-height:1.35;color:#383452;margin:8px 0 2px;font-variant-numeric:tabular-nums}
.stat-value small{font-size:10px;margin-left:5px;font-weight:400;color:#70758b}
.stat-card .feature-icon{position:absolute;right:18px;top:19px;height:28px;width:28px;border-radius:8px;margin:0}
.stat-card .nav-icon{width:15px;height:15px}
.stat-description{font-size:10px;color:#70758b}
.dashboard-columns{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(240px,1fr);gap:20px;margin-top:25px}
.dashboard-panel{background:white;border:1px solid var(--line);border-radius:15px;padding:23px}
.panel-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}
.panel-heading h3{font-size:15px;margin:0}
.panel-heading button{padding:0;margin:0;border:0;color:#70758b;font-size:10px}
.course-row{display:flex;gap:13px;align-items:center;padding:15px 0;border-top:1px solid #f0f1f6}
.course-row .feature-icon{width:38px;height:42px;border-radius:8px;margin:0;flex-shrink:0}
.course-row-text{min-width:0;flex:1}
.course-row h4{font-size:12px;font-weight:550;margin:0 0 2px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;max-width:310px}
.course-row p{font-size:10px;color:#70758b;margin:0}
.course-row button{padding:5px 11px;font-size:10px;white-space:nowrap}
.progress-track{height:4px;border-radius:5px;background:#eeedf7;margin-top:10px;max-width:250px;overflow:hidden}
.progress-fill{height:100%;background:#9b90db;border-radius:5px}
.quick-row{width:100%;display:flex;gap:12px;align-items:center;text-align:left;border:0;padding:12px 0;border-bottom:1px solid #f2f2f7;margin:0;border-radius:0;background:transparent}
.quick-row:last-child{border-bottom:0}
.quick-row .feature-icon{width:30px;height:30px;margin:0;border-radius:8px}
.quick-row strong{font-size:11px;font-weight:500;color:#64677e}
.quick-row small{font-size:9px;display:block;color:#70758b}
.quick-row>span:last-child{margin-left:auto;color:#a8a4b9}
.empty-state{padding:24px 0;color:#70758b;font-size:12px;text-align:center}
#message{white-space:pre-wrap;padding:12px 17px;border-radius:10px;background:#eeecfa;border:1px solid #e1ddf4;font-size:12px;color:#6f638f;margin:0 0 22px}
#message:empty{display:none}
#auth{max-width:530px;margin:22px auto 40px;padding:38px 40px}
#auth h2{margin-bottom:7px}
#auth>small{display:block;margin-top:19px;font-size:11px}
#auth-form{margin-top:25px}
label{display:block;font-size:12px;color:#757b91;margin:17px 0 7px}
input,select,textarea{color:#41465d;border:1px solid #e0e3ed;background:#fcfcff;border-radius:8px;padding:10px 12px;max-width:100%;transition:border .15s,box-shadow .15s}
input,textarea{display:block;width:100%;margin-top:7px}
input:not([type=checkbox]):not([type=radio]):not([type=file]){max-width:560px}
input:focus,textarea:focus,select:focus{outline:0;border-color:#9c91d6;box-shadow:0 0 0 3px #e8e3fb80;background:white}
input[type=checkbox],input[type=radio]{display:inline;width:auto;margin:0 7px 0 0;accent-color:var(--primary)}
textarea{min-height:110px;resize:vertical;line-height:1.8}
select{margin:5px 0;min-height:40px}
fieldset{min-width:0;border:1px solid var(--line);border-radius:12px;padding:20px 23px;margin:23px 0;background:linear-gradient(110deg,#fff,#fdfdff)}
legend{font-size:14px;font-weight:600;color:#57546e;padding:0 8px}
fieldset p{font-size:12px;color:#83889c;line-height:1.9}
fieldset button{font-size:12px}
fieldset fieldset{border-radius:8px;background:#f9faff}
#training-body>p{font-size:12px;color:#70758b}
#training-body>nav{display:flex;gap:5px;flex-wrap:wrap;padding-bottom:17px;border-bottom:1px solid var(--line);margin-bottom:24px}
#training-body>nav button{font-size:12px;padding:7px 12px}
details{border:1px solid var(--line);border-radius:10px;padding:13px 18px;margin:16px 0;background:#fafbfe;font-size:12px}
summary{cursor:pointer;color:#74798e;list-style-position:inside}
details[open] summary{margin-bottom:13px}
details p{margin:10px 0;color:#8b90a2}
blockquote{border-left:3px solid #c9c1eb;background:#f4f1fc;margin:15px 0;padding:12px 17px;color:#7c7397;border-radius:0 7px 7px 0}
pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f4f5fb;border-radius:9px;padding:18px;font-size:12px}
.scroll{overflow:auto}
table{width:100%;border-collapse:collapse;font-size:12px;margin-top:15px}
thead{background:#f8f9fd;color:#969aac}
th{text-align:left;font-weight:500;padding:12px 15px;border-bottom:1px solid var(--line)}
td{padding:14px 15px;border-bottom:1px solid #eef0f6;color:#7b8095}
td button{font-size:11px;padding:5px 10px}
tbody tr:hover{background:#fcfcff}
.skip-link{position:fixed;top:-70px;left:20px;background:var(--primary);color:white;padding:10px 16px;z-index:100}
.skip-link:focus{top:10px}
#workspace:focus{outline:none}
@media(min-width:1550px){main{padding-top:42px}
.hero{min-height:350px;padding:48px}
.hero-art{right:60px;top:35px}
.hero h2{font-size:40px}
.feature-card{padding:28px}
}
@media(max-width:1100px){:root{--sidebar:210px}
.brand{padding-left:20px}
.topbar{padding:0 27px}
main{padding:27px}
.hero{padding:30px;min-height:290px}
.hero h2{font-size:29px}
.hero-art{right:-25px;transform:scale(.8);transform-origin:right center}
.hero-copy{max-width:70%}
.dashboard .hero-art{right:-35px;transform:scale(.7)}
.feature-card{padding:18px}
.section-heading>p{max-width:180px}
.dashboard-columns{grid-template-columns:minmax(0,1.3fr) minmax(215px,1fr)}
.stats-grid{gap:10px}
.stat-card{padding:16px}
.stat-card .feature-icon{right:12px}
.course-row h4{max-width:210px}
}
@media(max-width:800px){:root{--sidebar:176px}
.brand{gap:8px;padding:24px 16px}
.brand-symbol{width:33px;height:33px;font-size:18px}
.brand strong{font-size:17px}
.brand small{font-size:8px}
.sidebar-scroll{padding:0 10px}
#navigation button{font-size:12px;padding:10px;gap:9px}
.sidebar-footer{margin:0 16px;font-size:10px}
.topbar{height:68px;padding:0 22px}
.user-chip small{max-width:140px}
main{padding:22px}
.hero h2{font-size:25px}
.hero-copy{max-width:78%}
.hero-art{opacity:.42;right:-60px;transform:scale(.65)}
.hero p{font-size:11px}
.feature-grid{grid-template-columns:1fr}
.feature-card{display:grid;grid-template-columns:40px 1fr;column-gap:16px;padding:21px}
.feature-card .feature-icon{grid-row:1/4;margin:0}
.feature-card h3{margin:0 0 5px}
.feature-card p{margin:0 0 10px}
.feature-card button{grid-column:2}
.section-heading>p{display:none}
.welcome-bottom button{display:none}
.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.dashboard-columns{grid-template-columns:1fr}
.page-heading{align-items:start;flex-direction:column;gap:8px}
.workspace-footer>span:last-child{max-width:230px;text-align:right}
section{padding:24px}
.dashboard .hero{padding:27px}
.dashboard .hero h2{font-size:23px}
}
@media(max-width:600px){.sidebar{position:relative;width:auto;border-right:0;border-bottom:1px solid var(--line)}
.brand{padding:18px 20px}
.brand small{font-size:9px}
#navigation{flex-direction:row;overflow-x:auto;padding-bottom:8px;gap:4px;scrollbar-width:thin}
#navigation button{width:auto;white-space:nowrap;flex-shrink:0;min-height:38px;padding:8px 12px;font-size:11px}
#navigation button.active:after{display:none}
.nav-group-title{display:none}
.sidebar-scroll{padding:0 12px}
.sidebar-footer{display:none}
.app-shell{margin-left:0}
.topbar{height:57px;padding:0 20px}
.breadcrumb{font-size:10px;gap:10px}
.avatar{height:28px;width:28px}
.user-chip{font-size:10px;gap:7px}
.user-chip small{font-size:8px;max-width:130px}
main{padding:19px 16px 10px}
.hero{padding:26px 23px;min-height:295px;border-radius:15px}
.hero h2{font-size:27px}
.hero-copy{max-width:100%}
.hero-art{right:-95px;top:15px;opacity:.18;transform:scale(.8)}
.hero p{font-size:11px}
.hero-note{font-size:9px}
.eyebrow{font-size:8px!important}
.section-heading{margin-top:25px}
.section-heading h3{font-size:17px}
.welcome-bottom{padding:17px;align-items:start;gap:10px}
.welcome-bottom strong{font-size:11px}
.welcome-bottom p{font-size:9px}
.workspace-footer{font-size:8px}
.dashboard .hero h2{font-size:22px}
.dashboard .hero{min-height:225px;padding:25px}
.dashboard .hero-copy{max-width:100%}
.page-heading h2{font-size:23px}
.stat-card{padding:15px}
.stat-value{font-size:25px}
.stat-description{font-size:8px}
.dashboard-panel{padding:20px}
.course-row h4{max-width:190px}
.hero-actions button{font-size:11px}
.dashboard-columns{gap:16px}
section{padding:23px 19px;border-radius:12px}
h2{font-size:21px}
fieldset{padding:17px 15px}
legend{font-size:12px}
#auth{padding:29px 24px;margin-top:8px}
input:not([type=checkbox]):not([type=radio]),textarea,select{font-size:16px}
#training-body>nav button{padding:6px 9px;font-size:11px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}
}


button.danger{color:#a45865;background:#fff;border-color:#ead9dd}
button.danger:hover{color:#904451;background:#fdf2f4;border-color:#dcb7c0}
button[type=submit]{background:var(--primary);border-color:var(--primary);color:white}
button[type=submit]:hover{background:var(--primary-dark)}
@media(max-width:600px){.hero-art,.dashboard .hero-art{display:none}
}


.status-badge{display:inline-flex;align-items:center;gap:6px;border-radius:6px;padding:2px 9px;font-size:10px;white-space:nowrap;background:#f0f1f6;color:#74798d}
.status-badge:before{content:"";height:4px;width:4px;background:currentColor;border-radius:50%}
.status-active{background:#edf5f0;color:#54876c}
.status-pending{background:#faf2e6;color:#9b7d47}
.status-disabled{background:#f8edef;color:#a86470}
.notice-box{display:block;margin:8px 0;padding:8px 12px;border-radius:6px;background:#faf2e6;color:#6f5a32;font-size:12px;white-space:normal}.notice-box p{margin:2px 0}.notice-error{background:#f8edef;color:#8e4e59}

.header-auth{display:flex;align-items:center;gap:8px;flex-shrink:0}.header-auth button{font-size:12px;margin:0;padding:7px 19px}.header-auth #header-login{background:transparent;border-color:transparent}.auth-help{margin-top:18px;padding-top:15px;border-top:1px solid var(--line)}.auth-help #login-help{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}.auth-help button{background:none;border:0;padding:3px 0;margin:0;color:var(--primary);font-size:12px}.auth-help button:hover{text-decoration:underline}@media(max-width:600px){.header-auth button{font-size:11px;padding:6px 13px}.header-auth{gap:3px}}

.profile-menu{position:relative;border:0;background:none;padding:0;margin:0;flex-shrink:0;z-index:30}.profile-menu>summary{display:flex;align-items:center;gap:9px;list-style:none;margin:0!important;padding:5px;border-radius:10px;cursor:pointer}.profile-menu>summary::-webkit-details-marker{display:none}.profile-menu>summary:hover{background:#f1effb}.profile-chevron{color:#868099;font-size:15px}.profile-panel{position:absolute;right:0;top:calc(100% + 10px);width:260px;max-width:calc(100vw - 32px);background:white;border:1px solid var(--line);border-radius:13px;padding:18px;box-shadow:0 15px 45px #29234c18}.profile-label{display:block;color:var(--muted);font-size:10px;margin-bottom:5px}.profile-panel>strong{display:block;font-size:12px;color:var(--ink);overflow-wrap:anywhere}.profile-panel>p{font-size:11px;color:var(--muted);margin:5px 0 13px;padding-bottom:13px;border-bottom:1px solid var(--line)}.profile-panel>button{width:100%;text-align:left;margin:3px 0;padding:8px 10px;font-size:12px;border:0;background:transparent}.profile-panel>button:hover{background:#f3f1fc}.profile-panel>button.danger:hover{background:#fdf2f4}

.user-chip-text{display:flex;flex-direction:column;align-items:flex-end;line-height:1.35;text-align:right}
.user-chip-text strong{font-size:12px;font-weight:600;color:var(--primary);white-space:nowrap}
@media(max-width:600px){.user-chip-text small{display:none}.user-chip-text strong{font-size:11px}}

.library-card{margin:14px 0;padding:14px 16px}
.library-card legend{font-size:13px}
.library-card p{margin:4px 0}
.library-card button{margin:8px 8px 0 0}
.dashboard-library{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}

.shelf-card{cursor:pointer;transition:border-color .15s,box-shadow .15s}
.shelf-card:hover,.shelf-card:focus-visible{border-color:var(--primary);box-shadow:0 4px 18px #5950cb1f;outline:none}
.reader-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:20px;align-items:start}
.reader-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:12px}
.reader-toolbar button,.reader-toolbar a{margin:0;font-size:12px}
.reader-page-input{display:flex;align-items:center;gap:4px;margin:0;font-size:12px}
.reader-page-input input{width:64px;margin:0;padding:6px}
.reader-view{border:1px solid var(--line);border-radius:12px;background:#fff;min-height:60vh;overflow:auto;padding:12px}
.reader-view img{display:block;width:100%;height:auto}
.reader-doc{height:70vh;overflow:hidden;padding:8px 16px;line-height:1.8;font-size:14px}
.reader-doc img{max-width:100%;height:auto}
.reader-doc table{border-collapse:collapse}.reader-doc td,.reader-doc th{border:1px solid var(--line);padding:4px 8px}
.reader-notes{position:sticky;top:16px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:16px;max-height:calc(100vh - 32px);overflow:auto}
.reader-notes h3{font-size:14px;margin:8px 0}
.reader-note{border-top:1px solid var(--line);padding:8px 0}
.reader-note p{margin:4px 0;font-size:12px}
.reader-note button{font-size:11px;padding:3px 10px;margin:0 6px 0 0}
.reader-note-page{border:0;background:#eeebfa;color:var(--primary);border-radius:6px}
.reader-note-label{display:block;font-size:11px;color:var(--muted)}
@media(max-width:900px){.reader-layout{grid-template-columns:1fr}.reader-notes{position:static;max-height:none}}
.reader-pager{display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.resource-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.question-card .question-prompt{font-size:13px;color:var(--ink)}
.question-options{margin:6px 0 6px 18px;padding:0;font-size:12px;color:#5c6075}
.question-options li.correct{color:#3d7a5a;font-weight:600}
.option-row{display:flex;align-items:center;gap:8px;margin:6px 0}
.option-row input[type=text],.option-row input:not([type]){flex:1;margin:0}
.option-row input[type=radio],.option-row input[type=checkbox]{width:auto;margin:0}
.paper-pick label{font-size:12px}

.filter-row{display:flex;flex-wrap:wrap;gap:4px 16px;align-items:flex-end}.filter-row label{min-width:120px;flex:0 1 160px}
.exam-status{position:sticky;top:0;z-index:5;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 16px;margin:8px 0;padding:8px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}.exam-status strong{font-variant-numeric:tabular-nums}.exam-status .time-warning{color:#b4232c}.save-state{font-size:12px;color:var(--muted)}.save-state.ok{color:#2f7a4d}.save-state.error{color:#b4232c}
a.button-link{display:inline-block;background:#fff;color:#51576e;border:1px solid #e0e2ec;border-radius:9px;padding:9px 16px;margin:4px 6px 4px 0;text-decoration:none}
a.button-link:hover{background:#f4f3ff;border-color:#beb9e9;color:var(--primary)}
.bar-row{display:grid;grid-template-columns:5.5em 1fr 2.5em;align-items:center;gap:8px;margin:3px 0;font-size:.9em;color:var(--muted)}
.bar-track{height:12px;background:#f0f0f6;border-radius:4px}
.bar-track .bar{display:block;height:100%;min-width:2px;background:var(--primary);border-radius:4px;opacity:.75}