:root{font-family:"Aptos","Microsoft YaHei",sans-serif;color:#243b36;background:#f4f7f2}*{box-sizing:border-box}body{margin:0}header{height:64px;padding:0 max(20px,5vw);display:flex;align-items:center;gap:18px;background:#fff;border-bottom:1px solid #dfe9e2}header span{margin-left:auto}.brand{display:grid;gap:2px;font-weight:800;color:#195d4d;text-decoration:none;line-height:1.05}.brand span{margin-left:0}.brand small{font-weight:600;margin-left:7px;letter-spacing:.06em}.brand-slogan{font-size:11px;font-weight:600;letter-spacing:.04em;color:#607970}main{max-width:1180px;margin:auto;padding:28px 20px 80px}.hero{padding:42px;border-radius:24px;background:linear-gradient(135deg,#195d4d,#4c927a);color:#fff;display:flex;align-items:center;justify-content:space-between}.hero h1{font-size:42px;margin:4px 0}.tabs,.toolbar,.inline,.gridform{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.tabs{padding:18px 0}.tabs a{color:#31564c;text-decoration:none}.toolbar,.card{background:white;border:1px solid #dce7df;border-radius:16px;padding:20px;margin:16px 0}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.stats article{background:#fff;padding:22px;border-radius:16px;border:1px solid #dce7df}.stats b{font-size:30px;display:block;color:#195d4d}.stats span,.bookgrid span{display:block;color:#698079;margin-top:5px}button,.button{border:0;border-radius:10px;padding:11px 18px;background:#19705a;color:#fff;text-decoration:none;cursor:pointer}button.link{background:none;color:#31564c;padding:0}input,select{min-height:42px;border:1px solid #cbdad1;border-radius:9px;padding:8px 10px;background:#fff}.gridform{display:grid;grid-template-columns:1fr 1fr 2fr 1fr 1fr auto}.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.chips span{background:#e7f2eb;border-radius:999px;padding:7px 12px}table{width:100%;border-collapse:collapse;margin-top:16px}th,td{text-align:left;padding:12px;border-bottom:1px solid #e5ece7}details{border-top:1px solid #e5ece7;padding:14px 0}summary{font-weight:700;cursor:pointer}.bookgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:12px 0}.bookgrid article{border:1px solid #e0e9e3;border-radius:10px;padding:12px}.narrow{max-width:620px;margin:50px auto}.narrow label{display:block;margin:16px 0}.narrow select{display:block;width:100%;margin-top:6px}.quiz fieldset{border:0;border-top:1px solid #e1e9e4;padding:20px 0}.quiz legend{font-weight:700}.quiz fieldset label{display:block;padding:8px}.score{font-size:64px;font-weight:800;color:#19705a}.notice{background:#dff2e8;padding:12px;border-radius:9px}@media(max-width:700px){.hero{padding:26px;display:block}.hero h1{font-size:30px}.stats{grid-template-columns:1fr 1fr}.gridform{grid-template-columns:1fr}.bookgrid{grid-template-columns:1fr}table{font-size:13px}.card{overflow:auto}}
.rankgrid{display:grid;grid-template-columns:1fr 1fr;gap:24px}@media(max-width:700px){.rankgrid{grid-template-columns:1fr}}
.hubgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px}.card.hub{display:block;text-decoration:none;color:inherit;margin:0;transition:transform .12s}.card.hub:hover{transform:translateY(-3px)}.card.hub b{font-size:20px;color:#195d4d}.card.hub span{display:block;color:#698079;margin-top:6px}
.chips .chipbtn{background:#e7f2eb;border-radius:999px;padding:9px 16px;color:#243b36;text-decoration:none;font-weight:600}
.namegrid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}.namebtn{width:100%;min-height:74px;font-size:20px;font-weight:700;border-radius:14px}
.heroactions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.button.ghost,button.ghost{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.55)}
.notice.error{background:#fde8e8;color:#8a2b2b}
.notice.success{background:#dff2e8;color:#155e46;font-weight:700;border-left:4px solid #19705a}
.notice.success::before{content:"✓ "}
.notice.warning{background:#fff4d6;color:#7a5b12}
.topnav{display:flex;gap:14px}.topnav a{color:#31564c;text-decoration:none}header span{margin-left:auto}
@media(max-width:700px){.hubgrid{grid-template-columns:1fr}.namegrid{grid-template-columns:1fr 1fr}.heroactions{margin-top:14px}}
.rankgrid.three{grid-template-columns:1fr 1fr 1fr}@media(max-width:900px){.rankgrid.three{grid-template-columns:1fr}}
tr.me td{background:#e7f2eb;font-weight:700}
.chipbtn.on{background:#19705a;color:#fff}
.hero .herograde{margin:6px 0 0;opacity:.85;font-weight:600}
.toolbar .tiertabs{width:100%;margin:0 0 6px}.tiertabs .chipbtn{font-size:16px;padding:10px 20px}
.bulkbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:12px 0}.bulkbar .danger-button{background:#a33;border-color:#a33}.sortbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:8px 0}.sortbar a{color:#31564c;text-decoration:none;font-weight:600;padding:6px 12px;border-radius:999px}.sortbar a.on{background:#19705a;color:#fff}
.goalbar{height:14px;border-radius:999px;background:#e7f2eb;overflow:hidden;margin-top:10px}.goalbar .fill{height:100%;background:linear-gradient(90deg,#19705a,#4c927a);border-radius:999px}
textarea{width:100%;min-height:74px;border:1px solid #cbdad1;border-radius:9px;padding:8px 10px;background:#fff;font:inherit}.tools{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:18px 0}.tools small{color:#698079}.candlist,.conflict,.material,.qedit{border:1px solid #e0e9e3;border-radius:12px;padding:14px;margin:16px 0}.candlist table{margin-top:10px}.conflict .opt,.qedit .opt{display:flex;gap:8px;align-items:center;margin:8px 0}.conflict .opt input[type=radio],.qedit .opt input[type=radio],.qedit .opt input[type=checkbox]{flex:0 0 auto;width:18px;height:18px;min-height:0;padding:0;border:0;background:none}.qedit .opt input:not([type=radio]):not([type=checkbox]){flex:1}.qedit fieldset{border:0;border-top:1px solid #e1e9e4;padding:16px 0;margin-top:10px}.qedit legend{font-weight:700}.qedit h2{margin:0}.material small,.qedit small{display:block;color:#698079;margin:6px 0}@media(max-width:700px){.candlist{overflow:auto}}
.candthumb{width:38px;height:54px;object-fit:cover;border-radius:5px;display:block;background:#e7f2eb}.coverprev{max-height:140px;border-radius:10px;margin:8px 0 0;display:block;border:1px solid #e0e9e3}
.detailhead{display:flex;gap:20px;align-items:flex-start}.detailhead h1{margin:0;font-size:28px}.detailhead .who{color:#698079;margin:6px 0 0}.bookcover{display:block;width:110px;height:156px;object-fit:cover;border-radius:10px;border:1px solid #e0e9e3;background:#e7f2eb}.bookcover.placeholder{display:flex;align-items:center;justify-content:center;font-size:40px;font-weight:800;color:#195d4d}.button.disabled{opacity:.45;cursor:default}.bookgrid{gap:14px}.bookgrid article .bookcover{width:100%;height:auto;aspect-ratio:2/3;font-size:34px}.bookgrid article .title{display:block;font-weight:700;color:#243b36;text-decoration:none;margin-top:10px}.bookgrid .chips{gap:6px;margin-top:8px}.bookgrid .chips span{display:inline-block;margin-top:0;padding:4px 9px;font-size:12px}.sibrow{display:flex;gap:12px;overflow:auto;padding:6px 0}.sibrow a{flex:0 0 auto;width:96px;color:#243b36;text-decoration:none}.sibrow .bookcover{width:96px;height:136px;font-size:30px}@media(max-width:900px) and (min-width:701px){.bookgrid{grid-template-columns:1fr 1fr}}@media(max-width:700px){.detailhead{display:block}.detailhead .bookcover{margin-bottom:14px}}.bookgrid article .body{min-width:0}@media(max-width:700px){.bookgrid article{display:flex;gap:14px;align-items:flex-start}.bookgrid article .bookcover{flex:0 0 auto;width:86px;height:122px;font-size:26px}.bookgrid article .title{margin-top:0}}
.resulthead{display:flex;gap:16px;align-items:center}.resulthead h1{margin:0;font-size:30px}.resulthead .who{color:#698079;margin:6px 0 0}.resulthead .bookcover{width:84px;height:118px;font-size:30px}.resulthead .score{margin-left:auto}.stamp{display:inline-block;margin-top:10px;border:3px solid #19705a;color:#19705a;font-weight:800;letter-spacing:2px;padding:4px 12px;border-radius:8px;transform:rotate(-8deg);opacity:.85}.statlist{margin-top:16px}.statlist>div{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-top:1px solid #e5ece7}.statlist span{color:#698079}.statlist b{text-align:right}.review fieldset{border:0;border-top:1px solid #e1e9e4;padding:16px 0;margin:0}.review legend{font-weight:700}.review .opt{border-radius:9px;padding:8px 10px;margin:6px 0}.review .opt.right{background:#dff2e8}.review .opt.wrong{background:#fde8e8}.review .opt small{color:#698079;margin-left:8px}@media(max-width:700px){.resulthead{display:block}.resulthead .score{margin:10px 0 0}}
.seriesgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:14px;margin-top:18px}.seriesfolder{display:grid;grid-template-columns:52px 1fr;gap:4px 12px;align-items:center;padding:18px;border:1px solid #dce7df;border-radius:14px;color:#243b36;text-decoration:none;background:#fbfdfb}.seriesfolder:hover{border-color:#4c927a;transform:translateY(-2px)}.seriesfolder .foldericon{grid-row:1/3;font-size:36px}.seriesfolder small{color:#698079}.booknumber{display:inline;color:#19705a;font-weight:800}.danger{color:#a33!important}@media(max-width:700px){.student-account-table{min-width:850px}}
.sectionhead{display:flex;align-items:center;justify-content:space-between;gap:16px}.sectionhead h2,.sectionhead p{margin:0 0 6px}@media(max-width:700px){.sectionhead{align-items:flex-start;flex-direction:column}}
.levelbadge{display:inline-block;padding:5px 14px;border-radius:999px;font-weight:700;font-size:14px;color:#fff;background:#8a9ba8;white-space:nowrap}.levelbadge.lv0{background:linear-gradient(135deg,#cd7f32,#a9662a)}.levelbadge.lv1{background:linear-gradient(135deg,#a7b6c2,#7d8f9c)}.levelbadge.lv2{background:linear-gradient(135deg,#f0c33c,#d4a017);color:#4a3a00}.levelbadge.lv3{background:linear-gradient(135deg,#6fe0d4,#2fa79b)}.levelbadge.lv4{background:linear-gradient(135deg,#63b8f0,#3f7fd6)}.levelbadge.lv5{background:linear-gradient(135deg,#9a6bf5,#d13ff0)}.levelcard .sectionhead p{margin:6px 0 0}.millionclub{border:2px solid #e0b422;background:linear-gradient(180deg,#fffdf4,#fff)}.millionclub h2{color:#a9791c}
.hero h1.tagline{display:flex;flex-direction:column;gap:8px;margin:4px 0}.hero h1.tagline .tagline-en{font-size:46px;font-weight:800;line-height:1.14;letter-spacing:.3px}.hero h1.tagline .tagline-zh{font-size:19px;font-weight:400;line-height:1.4;opacity:.8;letter-spacing:3px}@media(max-width:700px){.hero h1.tagline .tagline-en{font-size:29px}.hero h1.tagline .tagline-zh{font-size:15px;letter-spacing:2px}}
.admin-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding:24px 0 10px}.admin-head h1{font-size:36px;margin:0 0 8px;letter-spacing:-.02em}.admin-head p{margin:0;color:#60766f}.admin-summary{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid #dce7df;border-radius:16px;background:#fff;overflow:hidden;margin:18px 0}.admin-summary a{padding:22px;text-decoration:none;color:#243b36;border-right:1px solid #dce7df}.admin-summary a:last-child{border-right:0}.admin-summary b{font-size:30px;color:#195d4d;display:block}.admin-summary span{color:#60766f}.admin-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0}.admin-actions a,.report-list a{display:flex;justify-content:space-between;gap:20px;padding:18px 20px;background:#fff;border:1px solid #dce7df;border-radius:14px;text-decoration:none;color:#243b36}.admin-actions a:hover,.report-list a:hover{border-color:#4c927a}.admin-actions span,.report-list span{color:#60766f}.account-create{display:grid;grid-template-columns:1fr 1fr auto;gap:14px;align-items:end}.account-create label{display:grid;gap:6px}.account-create div{display:grid;gap:8px}.account-create small{color:#60766f;max-width:32ch}.account-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.account-row input{max-width:150px}.tablewrap{overflow:auto}.tablewrap table{min-width:820px}.status{display:inline-block;padding:4px 9px;border-radius:999px;background:#edf0ee;color:#60766f}.status.active{background:#dff2e8;color:#195d4d}.report-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.report-list a{align-items:center}code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:#edf4ef;padding:4px 7px;border-radius:6px;color:#195d4d}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #87cdb7;outline-offset:2px}::selection{background:#bce6d7;color:#153e34}
@media(max-width:900px){header{height:auto;min-height:64px;flex-wrap:wrap;padding-block:12px}.topnav{width:100%;order:3;overflow:auto;padding-bottom:4px}.topnav a{white-space:nowrap}.account-create{grid-template-columns:1fr 1fr}.account-create div{grid-column:1/-1}.admin-summary{grid-template-columns:1fr 1fr}.admin-summary a:nth-child(2){border-right:0}.admin-summary a:nth-child(-n+2){border-bottom:1px solid #dce7df}}
button.danger-button{background:#a63d3d;color:#fff}button.danger-button:hover{background:#842f2f}button.danger-button:focus-visible{outline-color:#df9c9c}
@media(max-width:700px){.admin-head{align-items:flex-start;flex-direction:column}.admin-head h1{font-size:30px}.admin-actions,.report-list,.account-create{grid-template-columns:1fr}.admin-summary a{padding:16px}.admin-actions a,.report-list a{display:grid;gap:4px}.account-create div{grid-column:auto}}
.ledgerfilters{margin-top:16px}.ledger small{color:#698079}.petmini{font-size:22px}.petcard{display:grid;grid-template-columns:180px 1fr;gap:28px;align-items:center;background:linear-gradient(135deg,#fffdf4,#edf5ec)}.petvisual{display:grid;place-items:center;min-height:150px;border-radius:50%;font-size:88px;background:radial-gradient(circle,#fff 0,#e6efe3 70%)}.petchoices{display:flex;gap:8px;flex-wrap:wrap}.petchoices button{background:#31564c}@media(max-width:700px){.petcard{grid-template-columns:1fr}.petvisual{min-height:120px}.ledger{min-width:900px}}
/* ===== Button-style option controls (segmented / choice buttons) ===== */
.optgroup{display:flex;flex-wrap:wrap;gap:10px;align-items:stretch;margin:6px 0}
.optgroup.vertical{flex-direction:column}
.optgroup.vertical .optbtn{width:100%;justify-content:flex-start;text-align:left}
.optinput{position:absolute;opacity:0;width:1px;height:1px;margin:0;pointer-events:none}
.optbtn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 18px;border:1px solid #cbdad1;border-radius:12px;background:#fff;color:#243b36;font:inherit;font-weight:600;line-height:1.3;text-align:center;text-decoration:none;cursor:pointer;transition:background .15s,border-color .15s,color .15s,transform .05s}
.optbtn:hover{border-color:#4c927a;background:#f2f8f4}
.optbtn:active{transform:translateY(1px)}
.optinput:checked+.optbtn,.optbtn.on{background:#19705a;border-color:#19705a;color:#fff}
.optinput:checked+.optbtn:hover,.optbtn.on:hover{background:#155a48;border-color:#155a48}
.optinput:focus-visible+.optbtn{outline:3px solid #87cdb7;outline-offset:2px}
.optbtn.small{min-height:38px;padding:7px 14px;font-size:14px;border-radius:10px}
.optgroup .optbtn{display:inline-flex;align-items:center}
.optcaption{display:block;margin:16px 0 8px;font-weight:600;color:#31564c}
.quiz fieldset label.optbtn{display:flex;align-items:center;width:100%;padding:13px 16px;margin:0}
/* ===== Responsive navigation: hamburger + left drawer ===== */
.navtoggle,.navclose,.navoverlay{display:none}
.navpanel{display:flex;align-items:center;gap:18px;flex:1 1 auto;min-width:0}
.navpanel form{display:flex;align-items:center}
.navpanel .orgswitch,.navpanel .langswitch{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.navpanel .orgname{color:#698079;white-space:nowrap}
.whoami{font-weight:600;color:#31564c;white-space:nowrap}
@media(max-width:1024px){
.navtoggle{display:inline-flex;align-items:center;justify-content:center;margin-left:auto;width:46px;height:46px;flex:0 0 auto;border:1px solid #dce7df;border-radius:12px;background:#fff;color:#195d4d;font-size:22px;line-height:1;cursor:pointer}
.navoverlay{display:block;position:fixed;inset:0;background:rgba(15,40,32,.45);opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;z-index:60}
.navoverlay.open{opacity:1;visibility:visible}
.navpanel{position:fixed;top:0;left:0;bottom:0;z-index:70;width:min(320px,86vw);flex:0 0 auto;flex-direction:column;align-items:stretch;gap:0;margin:0;padding:14px 18px 28px;background:#fff;border-right:1px solid #dfe9e2;box-shadow:2px 0 24px rgba(0,0,0,.16);overflow-y:auto;transform:translateX(-102%);transition:transform .28s ease}
.navpanel.open{transform:none}
.navclose{display:inline-flex;align-items:center;justify-content:center;align-self:flex-end;width:40px;height:40px;flex:0 0 auto;border:0;border-radius:10px;background:#f0f5f1;color:#31564c;font-size:20px;cursor:pointer;margin-bottom:6px}
.navpanel .topnav{flex-direction:column;align-items:stretch;width:auto;order:0;overflow:visible;gap:0;padding:0}
.navpanel .topnav a{padding:14px 8px;border-bottom:1px solid #eef3ef;font-size:17px;white-space:normal}
.navpanel .whoami{margin:16px 0 4px;padding:0 8px;font-size:15px;color:#698079}
.navpanel .orgswitch,.navpanel .langswitch{padding:12px 8px;border-top:1px solid #eef3ef;margin-top:8px}
.navpanel .orgname{display:block;padding:12px 8px;border-top:1px solid #eef3ef;margin-top:8px}
.navpanel form.logout{padding:12px 8px 0;border-top:1px solid #eef3ef;margin-top:8px}
.navpanel form.logout button{width:100%;min-height:44px;background:#a63d3d;color:#fff;border-radius:10px}
body.navlock{overflow:hidden}
}
/* ===== Tablet tier (768-1024) ===== */
@media(min-width:701px) and (max-width:1024px){.stats{grid-template-columns:repeat(2,1fr)}.admin-summary{grid-template-columns:repeat(2,1fr)}.admin-summary a:nth-child(2){border-right:0}.admin-summary a:nth-child(-n+2){border-bottom:1px solid #dce7df}main{padding:24px 22px 72px}}
/* ===== Mobile tier (<=767) ===== */
@media(max-width:767px){main{padding:20px 14px 64px}.toolbar,.card{padding:16px;border-radius:14px}.hero{padding:24px}.optbtn{padding:11px 16px}.optgroup{gap:8px}}

/* ===== Student product flow ===== */
html{scroll-behavior:smooth}::selection{background:#d7eadf;color:#153c31}button,.button,a{transition:background-color 120ms ease,color 120ms ease,border-color 120ms ease,transform 120ms ease}button:focus-visible,.button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #e0a84f;outline-offset:3px}.button.secondary,button.secondary{background:#e7f2eb;color:#195d4d}.student-welcome,.shelf-head{display:flex;align-items:center;justify-content:space-between;gap:36px;padding:44px;border-radius:20px;background:#174f42;color:#fff}.student-welcome h1,.shelf-head h1{max-width:18ch;margin:6px 0 10px;font-size:clamp(32px,5vw,56px);line-height:1.05;letter-spacing:-.025em}.student-welcome p,.shelf-head p{margin:0;max-width:60ch;color:#d8eee6}.primary-action{flex:0 0 auto;background:#f3c46f;color:#173c32;font-size:18px;font-weight:800;padding:15px 22px}.continue-strip{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:18px 0;padding:16px 20px;border-radius:14px;background:#fff5dc}.continue-strip div{display:grid;gap:3px}.quick-paths{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:18px 0}.quick-paths a{display:grid;gap:5px;min-height:112px;padding:22px;border-radius:14px;background:#fff;color:#243b36;text-decoration:none;box-shadow:0 8px 24px rgba(23,79,66,.08)}.quick-paths a:hover{transform:translateY(-2px)}.quick-paths b{font-size:20px}.quick-paths span{color:#5f7770}.growth-panel{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:36px;padding:32px;margin:20px 0;border-radius:18px;background:#edf5ec}.growth-panel h2{font-size:30px;margin:0 0 8px}.student-stats{grid-template-columns:repeat(3,1fr);margin:24px 0}.student-stats article{border:0;background:#fff}.progress-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px}.progress-row progress,.quiz-header progress{width:100%;height:12px;accent-color:#26775f}.next-milestone{color:#536d65}.companion{display:grid;place-items:center;align-content:center;gap:8px;border-radius:50%;aspect-ratio:1;background:#fff}.companion span{font-size:82px}.companion small{color:#536d65}.reading-list{display:grid;gap:0;margin-top:16px}.reading-list a{display:grid;grid-template-columns:100px 1fr auto;align-items:center;gap:16px;padding:15px 0;border-top:1px solid #e5ece7;color:#243b36;text-decoration:none}.reading-list small{color:#657a74}.mini-stamp{display:inline-block;width:max-content;border:2px solid #19705a;color:#19705a;font-size:11px;font-weight:900;letter-spacing:1px;padding:3px 8px;border-radius:6px;transform:rotate(-4deg)}.mini-stamp.retry,.stamp.retry{border-color:#b55348;color:#a1443c}.empty-state{text-align:center;padding:36px 20px}.shelf-section{margin:22px 0;padding:26px;border-radius:16px;background:#fff}.shelf-grid article{display:grid;grid-template-columns:minmax(92px,130px) 1fr;gap:18px}.shelf-grid .body{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.shelf-grid .body .button{margin-top:auto}.quiet-empty{color:#657a74;padding:10px 0}.book-confirm{display:grid;gap:5px;margin:20px 0;padding:18px;border-radius:12px;background:#edf5ec}.book-confirm strong{font-size:20px}.quiz-step{max-width:760px;margin:28px auto}.quiz-header{display:grid;grid-template-columns:1fr minmax(160px,45%);align-items:end;gap:20px}.quiz-header p,.quiz-header h1{margin:0}.quiz-step fieldset{min-height:360px;padding-top:40px}.quiz-step legend{font-size:clamp(22px,3vw,30px);line-height:1.3}.quiz-step .optbtn{min-height:52px}.quiz-controls{display:flex;justify-content:space-between;gap:12px}.quiz-warning{color:#8d3d35;font-weight:700}.stamp{animation:stamp-in 300ms cubic-bezier(.16,1,.3,1) both}.result-message{padding:16px;border-radius:12px;background:#edf5ec;line-height:1.6}@keyframes stamp-in{0%{opacity:0;transform:scale(1.5) rotate(-14deg)}100%{opacity:.9;transform:scale(1) rotate(-8deg)}}
@media(max-width:760px){.student-welcome,.shelf-head{align-items:flex-start;flex-direction:column;padding:28px}.quick-paths{grid-template-columns:1fr}.growth-panel{grid-template-columns:1fr}.companion{max-width:190px}.student-stats{grid-template-columns:1fr 1fr}.student-stats article:last-child{grid-column:1/-1}.reading-list a{grid-template-columns:88px 1fr}.reading-list small{grid-column:2}.shelf-section{padding:18px}.shelf-grid article{grid-template-columns:86px 1fr}.quiz-header{grid-template-columns:1fr}.quiz-step fieldset{min-height:390px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.stamp{animation:none}}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
[hidden]{display:none!important}

/* ===== Parent and teacher insight dashboards ===== */
.insight-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;padding:46px;border-radius:24px;background:linear-gradient(135deg,#123f35 0%,#1f6b57 62%,#e0aa4e 160%);color:#fff;box-shadow:0 18px 48px rgba(20,63,52,.16)}
.insight-hero h1{max-width:760px;margin:7px 0 14px;font-family:Georgia,"Times New Roman",serif;font-size:clamp(35px,5.2vw,62px);line-height:1.02;letter-spacing:-.035em}.insight-hero>div>p:last-child{margin:0;color:#d8eee6}.eyebrow{margin:0!important;font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:#8d6a2d}.insight-hero .eyebrow{color:#f2d69d}.hero-cta{flex:0 0 auto;background:#f3c46f;color:#173c32;font-weight:800}
.login-brand-hero{align-items:center;min-height:270px}.brand-hero h1{max-width:800px;margin:12px 0 18px;font-family:Georgia,"Times New Roman",serif;font-size:clamp(34px,4.8vw,56px);font-weight:800;line-height:1.06;letter-spacing:-.035em}.brand-hero h1 span{display:block;white-space:nowrap}.brand-hero .brand-context{margin:0;color:#d8eee6;font-size:14px;font-weight:700;letter-spacing:.035em}.brand-hero .brand-tagline-zh{margin:0;color:#f2d69d;font-size:clamp(17px,2vw,23px);font-weight:600;line-height:1.4;letter-spacing:.12em}
.period-nav{display:flex;align-items:center;justify-content:center;gap:14px;margin:20px 0}.period-nav strong{min-width:120px;text-align:center;font-size:18px}.period-nav .button{display:grid;place-items:center;width:44px;height:44px;padding:0}.button.disabled{pointer-events:none}
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:18px 0}.metric-grid article{display:grid;gap:8px;min-height:145px;padding:22px;border:1px solid #dce7df;border-radius:16px;background:#fff}.metric-grid span{color:#607970}.metric-grid b{font-size:36px;line-height:1;color:#174f42;font-variant-numeric:tabular-nums}.metric-grid b small{font-size:15px;font-weight:600}.metric-grid em{font-size:13px;font-style:normal;color:#70847e}.metric-grid em.positive{color:#16705a}.metric-grid em.negative{color:#a54a41}.teacher-metrics{grid-template-columns:repeat(5,minmax(0,1fr))}.teacher-metrics .attention-metric{background:#fff8eb;border-color:#efd49f}.teacher-metrics .attention-metric b{color:#9a6325}
.insight-card h2,.attention-card h2{margin:0 0 6px}.insight-card p,.attention-card p{margin:0;color:#607970}.legend{display:flex;align-items:center;gap:7px;color:#607970}.legend i{width:10px;height:10px;border-radius:3px;background:#2c8169}
.month-chart{display:grid;grid-template-columns:repeat(auto-fit,minmax(28px,1fr));align-items:end;gap:6px;min-height:190px;margin-top:24px;padding-top:10px}.day-cell{display:grid;grid-template-rows:22px 112px 20px;gap:5px;align-items:end;text-align:center;color:#7b8d87}.day-cell>span,.day-cell>small{font-size:11px}.day-cell i{position:relative;display:block;width:100%;height:100%;overflow:hidden;border-radius:6px;background:#eef2ef}.day-cell i:after{content:"";position:absolute;right:0;bottom:0;left:0;height:var(--score);background:#a9d5c7;border-radius:5px}.day-cell.read i:after{background:linear-gradient(180deg,#64ad95,#21725c)}.day-cell.future{opacity:.35}
.recent-books{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;margin-top:18px}.recent-books article{display:grid;grid-template-columns:58px 1fr;gap:12px;min-width:0;padding:12px;border-radius:12px;background:#f7faf7}.recent-books img{width:58px;height:78px;object-fit:cover;border-radius:7px;background:#e7eee9}.recent-books article div{display:flex;min-width:0;flex-direction:column;align-items:flex-start;gap:6px}.recent-books strong{display:-webkit-box;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:2}.recent-books span{font-size:12px;color:#70847e}.score-pill{padding:4px 7px;border-radius:999px;background:#dff2e8;color:#155e46;font-size:11px}.score-pill.retry{background:#fde8e8;color:#8a2b2b}.settings-card summary{font-weight:700}.settings-card label{display:grid;gap:5px;color:#607970}
.login-clean h1{font-size:40px;margin:7px 0 22px}.login-clean input{display:block;width:100%;margin-top:7px}.login-clean button{width:100%;font-weight:700}
.dashboard-controls{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;margin:16px 0}.dashboard-controls form label{display:flex;align-items:center;gap:10px}.dashboard-controls .period-nav{margin:0}.dashboard-actions{display:flex;justify-content:flex-end;gap:8px}
.attention-list,.student-directory{display:grid;gap:8px;margin-top:18px}.attention-list a,.student-directory a{display:grid;grid-template-columns:44px minmax(0,1fr) auto 20px;align-items:center;gap:12px;padding:13px;border:1px solid #e2eae5;border-radius:12px;color:#243b36;text-decoration:none}.attention-list a:hover,.student-directory a:hover{border-color:#4c927a;background:#f8fbf9}.student-avatar{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:#e0efe8;color:#195d4d;font-weight:800}.attention-list div{display:grid;gap:3px}.attention-list small,.student-directory small{color:#697e77}.attention-value{font-weight:800;color:#9a6325}.student-directory{grid-template-columns:repeat(2,1fr)}.student-directory a{grid-template-columns:44px minmax(0,1fr) auto 20px}.compact-goal{display:grid;grid-template-columns:minmax(220px,1fr) 2fr;align-items:center;gap:24px}.compact-goal h2,.compact-goal p{margin:0 0 5px}.compact-goal progress{width:100%;height:12px}
.ranking-launcher h2{margin:0 0 6px}.ranking-launcher p{margin:0;color:#607970}.ranking-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:18px}.ranking-links a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px;border:1px solid #dce7df;border-radius:12px;background:#f8fbf9;color:#195d4d;font-weight:800;text-decoration:none}.ranking-links a:hover{border-color:#4c927a;background:#eaf4ee;transform:translateY(-1px)}
.detail-title{margin:10px 0 24px}.detail-title h1{margin:5px 0;font-size:42px}.detail-title h1 small{font-size:18px;color:#607970}.detail-title>p:last-child{color:#607970}.back-link{display:inline-block;margin-bottom:24px;color:#31564c;text-decoration:none}.analysis-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.analysis-grid .card{margin:0}.breakdown-list{display:grid;gap:8px;margin-top:20px}.breakdown-list>div{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;border-top:1px solid #e5ece7}.breakdown-list span{display:grid;gap:3px}.breakdown-list small{color:#607970}.attempt-details summary{font-weight:700}.review-filters form{display:flex;align-items:flex-end;gap:10px;flex-wrap:wrap}.review-filters label{display:grid;gap:5px;font-size:13px;color:#607970}.revoke-form{display:flex;gap:8px;min-width:340px}.revoke-form input{flex:1}.status.revoked{background:#fde8e8;color:#8a2b2b}
@media(max-width:1000px){.teacher-metrics{grid-template-columns:repeat(3,1fr)}.recent-books{grid-template-columns:repeat(3,1fr)}.dashboard-controls{grid-template-columns:1fr auto}.dashboard-actions{grid-column:1/-1;justify-content:flex-start}.month-chart{overflow-x:auto;grid-template-columns:repeat(31,minmax(26px,1fr));padding-bottom:10px}}
@media(max-width:700px){.insight-hero{align-items:flex-start;flex-direction:column;padding:28px 22px}.insight-hero h1{font-size:34px}.metric-grid,.teacher-metrics{grid-template-columns:1fr 1fr}.metric-grid article{min-height:125px;padding:17px}.metric-grid b{font-size:30px}.month-chart{grid-template-columns:repeat(31,30px)}.recent-books{grid-template-columns:1fr}.dashboard-controls{grid-template-columns:1fr}.dashboard-controls .period-nav{justify-content:flex-start}.dashboard-actions{grid-column:auto}.student-directory,.analysis-grid{grid-template-columns:1fr}.ranking-links{grid-template-columns:1fr 1fr}.compact-goal{grid-template-columns:1fr}.review-filters form{display:grid;grid-template-columns:1fr 1fr}.review-filters button{grid-column:1/-1}.revoke-form{min-width:280px}.detail-title h1{font-size:34px}}
@media(max-width:700px){.brand-hero h1{font-size:clamp(24px,7.2vw,32px)}}
.picksteps{display:grid;gap:6px;margin-top:8px}.pickstep{display:grid;gap:12px}.stepbar{display:flex;align-items:center;flex-wrap:wrap;gap:10px}.steptitle{display:flex;align-items:center;gap:10px;margin:14px 0 0;font-size:22px}.stepnum{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:#19705a;color:#fff;font-size:16px;font-weight:800}.pickchip{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:5px 12px;border-radius:999px;background:#e7f2eb;color:#195d4d;font-size:13px;font-weight:700}.stepbar .optbtn.small{margin-left:auto}
.catgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}.catgrid .catpick{display:block;margin:0}.catgrid .catpick .optbtn.catcard{display:grid;justify-items:center;gap:5px;width:100%;min-height:150px;padding:18px 12px;border-radius:16px;text-align:center}.caticon{font-size:38px;line-height:1}.catname{font-size:18px;font-weight:800}.catstars{color:#e0a84f;font-size:15px;letter-spacing:3px}.optinput:checked+.catcard .catstars{color:#ffd98a}.cathint{font-size:13px;font-weight:500;opacity:.85;line-height:1.4}.catcount{margin-top:2px;padding:2px 10px;border-radius:999px;background:#e7f2eb;color:#195d4d;font-size:12px;font-weight:700}.catgrid .catpick .optbtn.catcard.disabled{background:#f2f5f3;border-color:#e3e9e5;color:#9daba5;cursor:not-allowed}.catgrid .catpick .optbtn.catcard.disabled:hover{background:#f2f5f3;border-color:#e3e9e5;transform:none}.catcard.disabled .caticon{filter:grayscale(1);opacity:.5}.catcard.disabled .catstars{color:#cbd5d0}
.seriesgrid.pickgrid{margin-top:0}button.pickseries{padding:18px;border:1px solid #dce7df;border-radius:14px;background:#fbfdfb;color:#243b36;text-align:left;transition:background .15s,border-color .15s,transform .05s}button.pickseries:hover{border-color:#4c927a;transform:translateY(-2px)}button.pickseries.on{border-color:#19705a;background:#e7f2eb;box-shadow:0 0 0 2px #19705a inset}
.bookpanel{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:14px}button.bookcard{display:grid;gap:8px;padding:10px;border:1px solid #dce7df;border-radius:14px;background:#fbfdfb;color:#243b36;font:inherit;text-align:left;cursor:pointer;transition:border-color .15s,transform .12s,box-shadow .15s}button.bookcard:hover{border-color:#4c927a;transform:translateY(-2px)}button.bookcard.on{border-color:#19705a;box-shadow:0 0 0 2px #19705a}.pickcover{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:10px;background:#eef4ef}.pickcover.placeholder{display:grid;place-items:center;font-size:42px;font-weight:800;color:#fff;background:linear-gradient(150deg,#4c927a,#2c6151)}.picktitle{font-size:14px;font-weight:600;line-height:1.35;color:#243b36}button.bookcard.on .picktitle{color:#155a48}
@media(max-width:700px){.catgrid{grid-template-columns:1fr 1fr}.catgrid .catpick .optbtn.catcard{min-height:132px;padding:14px 8px}.catname{font-size:16px}.bookpanel{grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:10px}.stepbar .optbtn.small{margin-left:0}}
.muted{color:#698079;font-size:13px}
.sitefoot{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px 18px;margin:26px auto 0;padding:16px;border-top:1px solid #dce7df;color:#698079;font-size:13px}.sitefoot .footbrand{font-weight:700;color:#243b36}.sitefoot a{color:#4c927a;text-decoration:none}.sitefoot a:hover{text-decoration:underline}
.policy{max-width:860px;margin:24px auto}.policy h2{margin:26px 0 8px;font-size:18px;color:#195d4d}.policy .lead{margin:16px 0 6px;font-weight:700;color:#243b36}.policy ul{margin:0 0 12px;padding-left:22px}.policy li{margin:5px 0;line-height:1.7}
@media(max-width:700px){.sitefoot{gap:6px 12px;font-size:12px}.policy h2{font-size:17px}}