:root{--portal-navy:#10284b;--portal-blue:#1454a8;--portal-blue-strong:#0f458f;--portal-blue-soft:#eaf2ff;--portal-orange:#f09a4a;--portal-text:#14253d;--portal-muted:#5d6c82;--portal-border:#dee5f0;--portal-canvas:#f5f7fb;--portal-white:#fff;--portal-success:#11765b;--bg:var(--portal-canvas);--ink:var(--portal-text);--muted:var(--portal-muted);--line:var(--portal-border);--panel:#fff;--surface-subtle:#f4f8ff;--surface-muted:#f9fbff;--field-border:#cad8ea;--field-hover:#a7c4e7;--accent:var(--portal-blue);--accent-dark:var(--portal-blue-strong);--green:#11765b;--soft-green:#e8f6ee;--yellow:#f4c95d;--red:#b84437;--layout-standard:1440px;--layout-wide:1440px;--layout-focus:960px;--layout-auth:1040px;--layout-reading:820px;--page-gutter:28px;--page-gutter-tablet:20px;--page-gutter-mobile:14px;--page-top:48px;--page-top-tablet:36px;--page-top-compact:28px;--page-bottom:88px;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-7:32px;--space-8:40px;--space-9:48px;--space-10:64px;--radius-control:11px;--radius-soft:14px;--radius-card:18px;--radius-panel:22px;--radius-hero:28px;--radius-pill:999px;--panel-padding:26px;--panel-padding-compact:20px;--section-gap:24px;--page-heading-gap:24px;--page-heading-rule:1px solid var(--line);--control-height:44px;--control-height-lg:48px;--control-height-compact:30px;--table-head-height:44px;--table-row-height:64px;--empty-min-height:144px;--header-height:72px;--header-height-mobile:64px;--title-page:36px;--title-section:26px;--title-hero:48px;--focus-ring:0 0 0 3px #1454a82e;--shadow-soft:0 10px 34px #2032270e;--shadow:0 20px 60px #20322714}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--ink);margin:0;padding:0;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,-apple-system,sans-serif}body{min-height:100vh}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}.home-shell,.report-shell,.review-shell,.admin-shell{width:100%;max-width:var(--layout-standard);padding:var(--page-top) var(--page-gutter) var(--page-bottom);margin:0 auto}.hero-card{background:var(--ink);color:#fff;border-radius:var(--radius-hero);box-shadow:var(--shadow);padding:clamp(42px,5vw,64px);position:relative;overflow:hidden}.hero-card:after{content:"";border:80px solid #ffffff0b;border-radius:50%;width:380px;height:380px;position:absolute;top:-110px;right:-80px}.eyebrow{letter-spacing:.18em;color:var(--accent);margin-bottom:16px;font-size:12px;font-weight:800}.hero-card h1,.section-heading h1,.score-hero h1{letter-spacing:-.05em;margin:0 0 24px;font-size:58px;line-height:1.02}.hero-card h1 span{color:#a8b8ad}.hero-copy{color:#cbd4ce;max-width:720px;font-size:18px;line-height:1.8}.hero-actions,.report-actions{z-index:2;gap:14px;margin-top:34px;display:flex;position:relative}.primary-button,.secondary-button,.ghost-button{min-height:var(--control-height);border-radius:var(--radius-control);cursor:pointer;border:0;justify-content:center;align-items:center;gap:7px;padding:11px 18px;font-size:12px;font-weight:850;line-height:1;text-decoration:none;transition:background .15s,border-color .15s,color .15s,box-shadow .15s,transform .15s;display:inline-flex}.primary-button{background:var(--accent);color:#fff;box-shadow:0 6px 18px #e85c251f}.primary-button:hover{background:var(--portal-blue-strong);transform:translateY(-1px);box-shadow:0 8px 22px #e85c2529}.secondary-button{background:var(--panel);border:1px solid var(--line);color:var(--ink)}.secondary-button:hover{background:var(--surface-subtle);border-color:#c8d1ca}.hero-card .secondary-button{color:#fff;background:#ffffff14;border-color:#ffffff26}.hero-card .secondary-button:hover{background:#ffffff21;border-color:#ffffff3d}.ghost-button{border:1px solid var(--line);color:var(--ink);background:0 0}.ghost-button:hover{background:var(--surface-subtle)}.primary-button:focus-visible,.secondary-button:focus-visible,.ghost-button:focus-visible{box-shadow:var(--focus-ring);outline:0}.primary-button:disabled,.secondary-button:disabled,.ghost-button:disabled{opacity:.48;cursor:not-allowed;box-shadow:none;transform:none}.stat-grid{grid-template-columns:repeat(4,1fr);gap:16px;margin:22px 0;display:grid}.stat-grid article{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:var(--panel-padding);box-shadow:var(--shadow-soft)}.stat-grid strong{letter-spacing:-.04em;font-size:30px}.stat-grid span{margin-left:5px;font-weight:700}.stat-grid p{color:var(--muted);margin:8px 0 0;font-size:13px}.feature-grid{grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px;display:grid}.feature-grid article{border-top:1px solid var(--line);padding:30px}.feature-index{color:var(--accent-dark);font-size:12px;font-weight:800}.feature-grid h2{margin:14px 0 8px;font-size:22px}.feature-grid p{color:var(--muted);line-height:1.7}.exam-shell{width:100%;max-width:var(--layout-wide);padding:32px var(--page-gutter) var(--page-bottom);margin:0 auto}.exam-topbar{border:1px solid var(--line);background:#fff;border-radius:18px 18px 0 0;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;padding:18px 22px;display:grid}.exam-topbar>div:first-child{flex-direction:column;gap:5px;display:flex}.exam-kicker{letter-spacing:.12em;color:var(--muted);font-size:11px;font-weight:800}.exam-topbar .ghost-button{justify-self:end}.timer{text-align:center;min-width:120px}.timer span{text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-size:10px;display:block}.timer strong{font-variant-numeric:tabular-nums;font-size:24px}.timer.danger strong{color:var(--red)}.exam-progress{background:#e7ebe5;height:4px}.exam-progress span{background:var(--accent);height:100%;transition:width .2s;display:block}.exam-layout{grid-template-columns:270px minmax(0,1fr);min-height:680px;display:grid}.question-nav{border:1px solid var(--line);background:#f8faf7;border-top:0;padding:24px}.nav-summary{align-items:baseline;gap:5px;margin-bottom:18px;display:flex}.nav-summary strong{font-size:28px}.nav-summary span{color:var(--muted);font-size:13px}.number-grid{grid-template-columns:repeat(5,1fr);gap:8px;display:grid}.number-grid button{aspect-ratio:1;border:1px solid var(--line);color:#58635c;background:#fff;border-radius:9px;font-weight:700;position:relative}.number-grid button.answered{background:var(--soft-green);color:var(--green);border-color:#a9c5b2}.number-grid button.current{outline:2px solid var(--accent);outline-offset:1px}.number-grid button.flagged:after{content:"";background:var(--yellow);border-radius:50%;width:6px;height:6px;position:absolute;top:4px;right:4px}.legend{color:var(--muted);gap:16px;margin-top:18px;font-size:11px;display:flex}.dot{background:#ddd;border-radius:50%;width:8px;height:8px;margin-right:5px;display:inline-block}.dot.answered{background:#7cab8a}.dot.flag{background:var(--yellow)}.question-card{border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;flex-direction:column;min-width:0;padding:42px 56px;display:flex}.question-meta{justify-content:space-between;align-items:center;display:flex}.question-meta>div:first-child{align-items:center;gap:10px;display:flex}.q-number{letter-spacing:.04em;font-size:13px;font-weight:800}.point-badge{border-radius:999px;padding:5px 9px;font-size:11px;font-weight:800}.point-badge.easy{color:#2b6b3e;background:#e8f3e8}.point-badge.medium{color:#8a6514;background:#fff4d9}.point-badge.hard{color:#a74536;background:#fce8e4}.question-tools{gap:8px;display:flex}.question-tools button{border:1px solid var(--line);color:#5c685f;background:#fff;border-radius:9px;padding:8px 11px}.concept-label{color:var(--accent-dark);letter-spacing:.08em;margin-top:46px;font-size:12px;font-weight:800}.question-stem{letter-spacing:-.025em;max-width:900px;margin:13px 0 30px;font-size:30px;line-height:1.55}.question-asset{object-fit:contain;width:min(100%,900px);max-width:900px;height:auto;max-height:none;margin:0 auto 30px}.choice-list{gap:12px;max-width:900px;display:grid}.choice{border:1px solid var(--line);text-align:left;background:#fff;border-radius:14px;align-items:center;gap:16px;padding:16px 18px;font-size:16px;transition:all .15s;display:flex}.choice:hover{background:#fbfcfa;border-color:#a6b4aa}.choice.selected{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent);background:#fff5ef}.choice-key{background:#f1f3ef;border-radius:50%;flex:0 0 34px;place-items:center;width:34px;height:34px;font-weight:800;display:grid}.choice.selected .choice-key{background:var(--accent);color:#fff}.question-footer{grid-template-columns:1fr auto 1fr;align-items:center;margin-top:auto;padding-top:45px;display:grid}.question-footer .secondary-button{justify-self:start}.question-footer .primary-button{justify-self:end}.question-counter{color:var(--muted);font-size:12px;font-weight:700}.modal-backdrop{z-index:20;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#111c168c;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.submit-modal{background:#fff;border-radius:22px;width:min(470px,100%);padding:34px;box-shadow:0 30px 100px #0003}.modal-icon{background:var(--soft-green);width:44px;height:44px;color:var(--green);border-radius:50%;place-items:center;font-weight:900;display:grid}.submit-modal h2{margin:18px 0 8px;font-size:28px}.submit-modal p{color:var(--muted);line-height:1.65}.warning-box{border-radius:var(--radius-control);color:#775a13;background:#fff6df;border:1px solid #f3d889;padding:12px;font-size:13px}.modal-actions{justify-content:flex-end;gap:10px;margin-top:24px;display:flex}.center-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-panel);text-align:center;max-width:620px;box-shadow:var(--shadow-soft);margin:100px auto;padding:clamp(28px,4vw,44px)}.loader{border:3px solid var(--line);border-top-color:var(--accent);border-radius:50%;width:28px;height:28px;margin:0 auto 18px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.score-hero{background:var(--ink);color:#fff;border-radius:28px;justify-content:space-between;align-items:center;padding:48px 56px;display:flex}.score-hero h1{margin-bottom:10px;font-size:48px}.score-hero p{color:#aebbb2}.score-ring{border:14px solid #ffffff1f;border-radius:50%;align-content:center;place-items:center;width:180px;height:180px;display:grid;position:relative}.score-ring:after{content:"";border:14px solid #0000;border-top-color:var(--accent);border-right-color:var(--accent);border-radius:50%;position:absolute;inset:-14px;transform:rotate(25deg)}.score-ring strong{font-size:48px;line-height:1}.score-ring span,.score-ring small{color:#b9c4bd}.result-stats{grid-template-columns:repeat(3,1fr);gap:14px;margin:18px 0;display:grid}.result-stats article{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:var(--panel-padding-compact);box-shadow:var(--shadow-soft);align-items:baseline;gap:8px;display:flex}.result-stats strong{font-size:30px}.result-stats span{color:var(--muted)}.report-grid{grid-template-columns:1fr 1fr;gap:18px;display:grid}.report-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:var(--panel-padding);box-shadow:var(--shadow-soft)}.report-card h2{margin:0 0 22px}.metric-row{grid-template-columns:110px 1fr 42px;align-items:center;gap:12px;margin:14px 0;font-size:13px;display:grid}.metric-row>span{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.metric-bar{background:#edf0eb;border-radius:999px;height:8px;overflow:hidden}.metric-bar i{background:var(--green);border-radius:999px;height:100%;display:block}.metric-row strong{text-align:right}.report-actions{justify-content:center}.section-heading{justify-content:space-between;align-items:flex-end;gap:var(--page-heading-gap);margin-bottom:var(--page-heading-gap);display:flex}.section-heading h1{margin:0 0 8px;font-size:44px}.section-heading p{color:var(--muted);margin:0}.segmented{border:1px solid var(--line);background:#fff;border-radius:10px;padding:3px;display:flex}.segmented button{color:var(--muted);background:0 0;border:0;border-radius:7px;padding:9px 12px}.segmented button.active{background:var(--ink);color:#fff}.review-list{gap:16px;display:grid}.review-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:var(--panel-padding);box-shadow:var(--shadow-soft)}.review-card-head{color:var(--muted);justify-content:space-between;font-size:12px;display:flex}.review-card-head>div{align-items:center;gap:10px;display:flex}.review-card-head strong{color:var(--ink);font-size:16px}.status{border-radius:var(--radius-pill);padding:5px 9px;font-size:10px;font-weight:850;line-height:1.2}.status.ok{color:#28673b;background:#e9f4ea}.status.bad{color:#a23f32;background:#fce9e6}.status.blank{color:#66716a;background:#eef0ed}.review-card h2{margin:20px 0;font-size:21px;line-height:1.6}.review-choices{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px;display:grid}.review-choices div{border:1px solid var(--line);border-radius:10px;gap:9px;padding:11px;display:flex}.review-choices span{font-weight:800}.review-choices .picked{background:#fff4ee;border-color:#f1b396}.review-choices .correct-choice{box-shadow:inset 3px 0 0 var(--green);background:#edf7ef}.solution-box{border-top:1px solid var(--line);margin-top:20px;padding-top:18px}.solution-box p{color:var(--muted);margin-bottom:0;line-height:1.7}.review-question-asset{object-fit:contain;border-radius:12px;max-width:100%;height:auto;max-height:520px;margin:8px auto 22px;display:block}.review-book-toggle{gap:12px;margin:-8px 0 18px;display:grid}.review-book-toggle>button{justify-self:end}.review-retry-box{background:#f8faf7;border:1px solid #d9e2da;border-radius:14px;margin-top:18px;padding:20px}.review-retry-box>div:first-child strong{font-size:16px}.review-retry-box>div:first-child p{color:var(--muted);margin:6px 0 0;font-size:13px;line-height:1.55}.review-retry-choices{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px;margin-top:16px;display:grid}.review-retry-choices button{border:1px solid var(--line);color:var(--ink);text-align:left;background:#fff;border-radius:10px;align-items:flex-start;gap:9px;padding:11px;display:flex}.review-retry-choices button span{font-weight:900}.review-retry-choices button.selected{border-color:var(--accent);background:#fff8f3;box-shadow:0 0 0 2px #f47f4b24}.review-retry-input{border:1px solid var(--line);background:#fff;border-radius:10px;width:min(320px,100%);margin-top:16px;padding:12px 14px;font-size:20px;font-weight:800;display:block}.review-retry-actions{flex-wrap:wrap;gap:10px;margin-top:16px;display:flex}.review-retry-feedback{border-radius:11px;margin:18px 0 10px;padding:12px 14px;font-size:13px;font-weight:700;line-height:1.5}.review-retry-feedback.ok{color:#28673b;background:#e9f4ea}.review-retry-feedback.bad{color:#a23f32;background:#fce9e6}.review-retry-feedback.neutral{color:#55635a;background:#eef1ee}.review-choices .retry-choice{outline:2px dashed var(--accent);outline-offset:2px}.review-answer-summary{border:1px solid var(--line);background:#f8faf7;border-radius:11px;flex-wrap:wrap;gap:18px;margin-top:18px;padding:13px 15px;display:flex}.review-answer-summary span{color:var(--muted)}.review-answer-summary strong{color:var(--ink)}.admin-toolbar{gap:10px;margin-bottom:16px;display:flex}.admin-toolbar input,.admin-toolbar select{border:1px solid var(--line);background:#fff;border-radius:10px;padding:12px 14px}.admin-toolbar input{flex:1}.admin-table{border:1px solid var(--line);background:#fff;border-radius:16px;overflow:hidden}.admin-row{border-bottom:1px solid #edf0ec;grid-template-columns:50px minmax(300px,1fr) 140px 70px 90px;align-items:center;gap:14px;padding:14px 18px;display:grid}.admin-row:last-child{border-bottom:0}.admin-head{text-transform:uppercase;letter-spacing:.08em;color:var(--muted);background:#f7f9f6;font-size:11px;font-weight:800}.admin-row>span:nth-child(2){flex-direction:column;gap:4px;display:flex}.admin-row small{color:var(--muted);line-height:1.45}.admin-row i{border-radius:999px;padding:5px 7px;font-size:11px;font-style:normal}.admin-row i.pending{color:#856311;background:#fff3d7}.admin-row i.reviewed{color:#2d6840;background:#e8f3e9}@media (max-width:600px){.review-card{padding:20px 16px}.review-card-head{align-items:flex-start;gap:10px}.review-card-head,.review-card-head>div{flex-wrap:wrap}.review-retry-choices,.review-choices{grid-template-columns:1fr}.review-retry-actions{grid-template-columns:1fr;display:grid}.review-retry-actions button{width:100%}.review-book-toggle>button{justify-self:stretch}}@media (max-width:900px){.home-shell,.report-shell,.review-shell,.admin-shell,.student-shell,.verification-shell{padding:var(--page-top-tablet) var(--page-gutter-tablet) 72px}.hero-card{padding:42px 28px}.hero-card h1{font-size:42px}.stat-grid,.feature-grid,.report-grid{grid-template-columns:1fr 1fr}.exam-shell{padding:20px var(--page-gutter-tablet) 64px}.exam-layout{grid-template-columns:1fr}.question-nav{order:2}.question-card{padding:30px 22px}.question-stem{font-size:24px}.number-grid{grid-template-columns:repeat(8,1fr)}.score-hero{align-items:flex-start;padding:34px}.score-ring{width:130px;height:130px}.admin-table{overflow-x:auto}.admin-row{min-width:820px}}@media (max-width:600px){.home-shell,.report-shell,.review-shell,.admin-shell,.student-shell,.verification-shell,.legal-page{padding-left:var(--page-gutter-mobile);padding-right:var(--page-gutter-mobile)}.stat-grid,.feature-grid,.report-grid{grid-template-columns:1fr}.exam-topbar{grid-template-columns:1fr auto}.exam-topbar .timer{grid-area:1/2}.exam-topbar .ghost-button{grid-column:1/-1;width:100%}.question-card{min-height:640px}.question-meta{align-items:flex-start}.question-tools{flex-direction:column}.number-grid{grid-template-columns:repeat(6,1fr)}.question-footer{gap:10px}.question-footer .primary-button,.question-footer .secondary-button{padding:12px}.score-hero{gap:24px;display:grid}.score-ring{justify-self:start}.section-heading{gap:18px;display:grid}.segmented{justify-self:start}}@media (max-width:760px){:root{--title-page:32px;--title-hero:42px;--panel-padding:22px}}.section-heading h1{font-size:var(--title-page);letter-spacing:-.035em;line-height:1.12}.section-heading h2{font-size:var(--title-section);letter-spacing:-.025em;margin:0 0 6px;line-height:1.18}.section-heading p{max-width:760px;line-height:1.65}.report-card,.review-card,.stat-grid article{box-shadow:var(--shadow-soft)}@media (max-width:600px){:root{--title-page:30px;--title-section:23px;--title-hero:40px;--panel-padding:20px}.section-heading h1{font-size:var(--title-page)}}.hero-card h1,.score-hero h1{font-size:var(--title-hero)}.arithmetic-hero{background:linear-gradient(135deg,#12241b,#20362a)}.grade-profile-grid{grid-template-columns:repeat(6,1fr);gap:10px;margin:0 0 34px;display:grid}.grade-profile-card{border:1px solid var(--line);text-align:left;background:#fff;border-radius:16px;gap:3px;padding:20px 14px;display:grid}.grade-profile-card strong{font-size:32px}.grade-profile-card span{font-weight:800}.grade-profile-card small{color:var(--muted);line-height:1.4}.grade-profile-card.active{border-color:var(--accent);background:#fff8f4;box-shadow:0 0 0 2px #ff744024}.arithmetic-dashboard-grid{grid-template-columns:1fr 1fr;gap:18px;margin:18px 0;display:grid}.target-strip{grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0;display:grid}.target-strip div{background:#f6f8f4;border-radius:12px;padding:16px}.target-strip strong{font-size:26px;display:block}.target-strip span{color:var(--muted);font-size:11px}.skill-list{gap:8px;display:grid}.skill-list>div{border-top:1px solid var(--line);justify-content:space-between;gap:14px;padding:12px 0;display:flex}.skill-list span{color:var(--muted);text-align:right;font-size:12px}.big-accuracy{margin:12px 0;font-size:52px;font-weight:900;line-height:1}.focus-chips{flex-wrap:wrap;gap:7px;margin:18px 0;display:flex}.focus-chips span{color:#285d38;background:#eef4ed;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:800}.arithmetic-actions{margin-top:25px}.arithmetic-metrics{margin-top:18px}.arithmetic-metric{grid-template-columns:150px 1fr 54px 54px}.arithmetic-metric small{color:var(--muted);text-align:right}.mental-shell{width:100%;max-width:var(--layout-focus);padding:40px var(--page-gutter) var(--page-bottom);margin:0 auto}.mental-topbar{border:1px solid var(--line);background:#fff;border-radius:18px;grid-template-columns:1fr auto 1fr;align-items:center;padding:18px 22px;display:grid}.mental-topbar>div:first-child{flex-direction:column;display:flex}.mental-topbar .eyebrow{margin:0}.mental-topbar>.ghost-button{justify-self:end}.mental-progress{text-align:center;font-weight:800}.mental-progress span{font-size:26px}.mental-progress i{background:#e7ebe5;border-radius:9px;width:180px;height:5px;margin-top:7px;display:block;overflow:hidden}.mental-progress b{background:var(--accent);height:100%;display:block}.mental-card{border:1px solid var(--line);background:#fff;border-radius:24px;flex-direction:column;justify-content:center;min-height:540px;margin-top:20px;padding:56px;display:flex}.mental-meta{color:var(--muted);justify-content:space-between;font-size:13px;display:flex}.mental-meta span{color:var(--accent-dark);font-weight:800}.mental-prompt{text-align:center;letter-spacing:-.04em;margin:70px 0 40px;font-size:64px;font-weight:850}.mental-card form{grid-template-columns:1fr auto;gap:10px;width:100%;max-width:560px;margin:0 auto;display:grid}.mental-input{text-align:center;border:2px solid var(--line);border-radius:14px;min-width:0;padding:14px 18px;font-size:34px}.mental-input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #ff74401f}.mental-submit{min-width:130px}.mental-hint{text-align:center;color:var(--muted);margin-top:28px;font-size:12px}.diagnosis-row{border-bottom:1px solid var(--line);justify-content:space-between;padding:12px 0;display:flex}.arithmetic-result .score-ring:after{border-top-color:#ff784b;border-right-color:#ff784b}@media (max-width:900px){.grade-profile-grid{grid-template-columns:repeat(3,1fr)}.arithmetic-dashboard-grid{grid-template-columns:1fr}.mental-prompt{font-size:52px}.target-strip{grid-template-columns:1fr 1fr 1fr}}@media (max-width:600px){.grade-profile-grid{grid-template-columns:repeat(2,1fr)}.mental-shell{padding:14px}.mental-topbar{grid-template-columns:1fr auto}.mental-topbar>.ghost-button{grid-column:1/-1;margin-top:10px}.mental-card{padding:30px 18px}.mental-prompt{margin:50px 0 30px;font-size:42px}.mental-card form{grid-template-columns:1fr}.mental-submit{width:100%}.target-strip{grid-template-columns:1fr}.arithmetic-metric{grid-template-columns:100px 1fr 44px}}.mental-feedback{border-radius:14px;grid-template-columns:1fr auto;align-items:center;gap:6px 16px;width:100%;max-width:620px;margin:24px auto 0;padding:16px 18px;display:grid}.mental-feedback.ok{background:#edf7ef;border:1px solid #b9d7c0}.mental-feedback.bad{background:#fff1ec;border:1px solid #f2b9a4}.mental-feedback strong{font-size:16px}.mental-feedback p{color:var(--muted);grid-column:1;margin:0;font-size:13px}.mental-feedback .secondary-button{grid-area:1/2/3}.mental-answer-form{justify-content:center;align-items:center;gap:12px;display:flex}.mental-hidden-submit{opacity:0;pointer-events:none;width:1px;height:1px;position:absolute}.mental-keypad{grid-template-columns:repeat(3,minmax(72px,1fr));gap:10px;max-width:360px;margin:18px auto 0;display:none}.mental-keypad button{border:1px solid var(--line);min-height:62px;color:var(--ink);touch-action:manipulation;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;background:#fff;border-radius:14px;font-size:24px;font-weight:800}.mental-keypad button:active{background:#f5f7f3;transform:translateY(1px)}.mental-keypad .key-back{background:#f4f5f2}.mental-keypad .key-enter{background:var(--accent);border-color:var(--accent);grid-column:1/-1;font-size:28px}.mental-keypad .key-enter:disabled{opacity:.35}.mental-feedback button:focus{outline:3px solid var(--accent);outline-offset:3px}@media (pointer:coarse){.mental-keypad{display:grid}.mental-input{caret-color:#0000}.mental-input.symbolic-input{caret-color:auto}}@media (max-width:700px){.mental-keypad{display:grid}.mental-card{padding-bottom:28px}.mental-hint{margin-top:16px}.mental-prompt{margin-bottom:22px}}.login-shell{place-items:center;min-height:calc(100vh - 72px);padding:48px 20px;display:grid}.login-card{border:1px solid var(--line);width:min(520px,100%);box-shadow:var(--shadow);background:#fff;border-radius:28px;padding:46px}.login-mark{background:var(--ink);color:#fff;border-radius:16px;place-items:center;width:54px;height:54px;margin-bottom:26px;font-size:22px;font-weight:900;display:grid}.login-card h1{margin:0 0 18px;font-size:42px;line-height:1.05}.login-card h1 span{color:#7d8a82}.login-card>p{color:var(--muted);line-height:1.7}.login-card label{gap:8px;margin:20px 0;font-size:13px;font-weight:800;display:grid}.login-card input{border:1px solid var(--line);border-radius:12px;padding:15px 16px;font-size:17px}.login-card input:focus{outline:2px solid var(--accent);border-color:#0000}.login-card .primary-button{width:100%;margin-top:8px}.login-error{color:var(--red);background:#fff0ec;border:1px solid #f0c0b6;border-radius:10px;padding:10px 12px}.login-data-note{border-top:1px solid var(--line);gap:5px;margin-top:26px;padding-top:20px;display:grid}.login-data-note span{color:var(--muted);font-size:12px;line-height:1.6}.candidate-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-panel);max-width:850px;box-shadow:var(--shadow-soft);margin:40px auto;padding:clamp(28px,4vw,44px)}.candidate-card h1{margin:0 0 28px;font-size:42px}.candidate-grid{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.candidate-grid div{border:1px solid var(--line);background:var(--surface-subtle);border-radius:var(--radius-soft);padding:17px}.candidate-grid span{color:var(--muted);margin-bottom:6px;font-size:11px;display:block}.candidate-grid strong{font-size:16px}.candidate-notice{border-radius:var(--radius-soft);color:#725b1f;background:#fff8e8;border:1px solid #efdca6;margin:20px 0;padding:14px;line-height:1.65}.candidate-start{width:100%;font-size:17px}.student-shell{width:100%;max-width:var(--layout-standard);padding:var(--page-top) var(--page-gutter) var(--page-bottom);margin:0 auto}.student-hero{background:var(--ink);color:#fff;border-radius:28px;justify-content:space-between;align-items:center;padding:44px 52px;display:flex}.student-hero h1{margin:6px 0 10px;font-size:42px}.student-hero p{color:#b8c3bc}.readiness-ring{text-align:center;border:12px solid #ffffff1f;border-radius:50%;align-content:center;place-items:center;width:160px;height:160px;display:grid}.readiness-ring strong{font-size:44px}.readiness-ring span,.readiness-ring small{color:#bdc7c0}.model-note{color:var(--muted);font-size:12px;line-height:1.6}.student-kpi-grid{grid-template-columns:repeat(6,1fr);gap:10px;margin:20px 0;display:grid}.student-kpi-grid article{border:1px solid var(--line);background:#fff;border-radius:14px;padding:18px}.student-kpi-grid span,.student-kpi-grid small{color:var(--muted);font-size:11px;display:block}.student-kpi-grid strong{margin:5px 0;font-size:26px;display:block}.student-dashboard-grid{grid-template-columns:1fr 1fr;gap:18px;margin:18px 0;display:grid}.insight-card{border-top:1px solid var(--line);padding:16px 0}.insight-card>div{align-items:center;gap:10px;display:flex}.insight-card>div>span{background:#eef0ed;border-radius:999px;padding:5px 8px;font-size:10px;font-weight:900}.insight-card.priority>div>span{color:#9a4a23;background:#fff0e5}.insight-card.strength>div>span{color:#29623c;background:#e8f3e9}.insight-card h3{margin:0}.insight-card p{color:var(--muted);margin:8px 0;font-size:13px;line-height:1.6}.student-metric{border-top:1px solid var(--line);justify-content:space-between;align-items:center;padding:14px 0;display:flex}.student-metric div{gap:4px;display:grid}.student-metric span{color:var(--muted);font-size:12px}.student-metric strong{font-size:22px}.next-action-list{gap:14px;padding-left:22px;display:grid}.next-action-list li{padding-left:4px}.next-action-list b,.next-action-list span,.next-action-list small{display:block}.next-action-list span{color:var(--ink);margin-top:4px}.next-action-list small{color:var(--muted);margin-top:4px;line-height:1.5}.recommended-paper{border-top:1px solid var(--line);justify-content:space-between;align-items:center;padding:16px 0;display:flex}.recommended-paper div{gap:5px;display:grid}.recommended-paper span{color:var(--muted);font-size:12px}.recommended-paper>strong{color:var(--accent-dark)}.attempt-timeline{gap:8px;display:grid}.attempt-row{border-top:1px solid var(--line);justify-content:space-between;gap:16px;padding:14px 0;display:flex}.attempt-row>div{gap:4px;display:grid}.attempt-row small,.attempt-scores span{color:var(--muted);font-size:12px}.attempt-scores{text-align:right}.empty-evidence{background:#f7f9f6;border-radius:12px;padding:20px}.empty-evidence p{color:var(--muted)}@media (max-width:900px){.student-kpi-grid{grid-template-columns:repeat(3,1fr)}.student-dashboard-grid{grid-template-columns:1fr}.candidate-grid{grid-template-columns:1fr 1fr}.student-hero{padding:34px}.readiness-ring{width:125px;height:125px}}@media (max-width:600px){.login-card{padding:30px 22px}.student-shell{padding:28px 14px 70px}.student-hero{gap:20px;display:grid}.student-kpi-grid{grid-template-columns:1fr 1fr}.candidate-grid{grid-template-columns:1fr}.candidate-card{padding:28px 20px}.attempt-row{display:grid}.attempt-scores{text-align:left}}.student-create-form{border:1px solid var(--line);background:#fff;border-radius:16px;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:20px;padding:18px;display:grid}.student-create-form input{border:1px solid var(--line);border-radius:10px;padding:12px}.student-admin-table{border:1px solid var(--line);background:#fff;border-radius:16px;overflow:hidden}.student-admin-row{border-bottom:1px solid #edf0ec;grid-template-columns:1.4fr .5fr .8fr .8fr 1fr 1.6fr;align-items:center;gap:14px;padding:15px 18px;display:grid}.student-admin-row.head{color:var(--muted);letter-spacing:.06em;background:#f7f9f6;font-size:11px;font-weight:800}.student-admin-row>span{gap:3px;display:grid}.student-admin-row small{color:var(--muted);font-size:11px}@media (max-width:900px){.student-create-form{grid-template-columns:1fr 1fr}.student-admin-table{overflow-x:auto}.student-admin-row{min-width:900px}}@media (max-width:600px){.student-create-form{grid-template-columns:1fr}}.student-admin-row.disabled{opacity:.52}.student-admin-actions{flex-wrap:wrap;margin-top:5px;gap:8px!important;display:flex!important}.student-admin-actions a,.student-admin-actions button{color:var(--accent-dark);background:0 0;border:0;padding:0;font-size:11px;text-decoration:underline}.student-admin-actions button{cursor:pointer}.student-edit-form{border:1px solid var(--line);background:#fff;border-radius:16px;grid-template-columns:1.4fr 1fr .7fr 1fr auto;align-items:end;gap:10px;margin-bottom:20px;padding:18px;display:grid}.student-edit-form h2{margin:2px 0 4px}.student-edit-form p{color:var(--muted);margin:0;font-size:12px}.student-edit-form input{border:1px solid var(--line);border-radius:10px;padding:12px}.student-edit-actions{gap:8px;display:flex}@media (max-width:900px){.student-edit-form{grid-template-columns:1fr 1fr}.student-edit-form>div:first-child{grid-column:1/-1}}@media (max-width:600px){.student-edit-form{grid-template-columns:1fr}.student-edit-form>div:first-child{grid-column:auto}}.integer-answer-box{border:1px solid var(--line,#d9d9d9);background:#ffffffb8;border-radius:18px;flex-direction:column;gap:12px;max-width:420px;margin:28px 0;padding:22px;display:flex}.integer-answer-box label{letter-spacing:.02em;font-size:14px;font-weight:700}.integer-answer-box input{letter-spacing:.08em;background:#fff;border:2px solid #111;border-radius:12px;max-width:220px;padding:14px 18px;font-size:32px;font-weight:800}.integer-answer-box input:focus{outline:3px solid #0000001f}.competition-heading{margin-top:54px}.competition-grid{grid-template-columns:repeat(2,1fr);gap:14px;margin:0 0 54px;display:grid}.competition-card{appearance:none;text-align:left;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-card);padding:var(--panel-padding-compact);min-height:190px;box-shadow:var(--shadow-soft);gap:8px;transition:all .16s;display:grid}.competition-card:hover{box-shadow:var(--shadow);border-color:#aeb9b1;transform:translateY(-2px)}.competition-card.active{border-color:var(--accent);background:#fff9f5;box-shadow:0 0 0 2px #ff7a4521}.competition-card>span{letter-spacing:.14em;color:var(--accent-dark);font-size:11px;font-weight:900}.competition-card>strong{letter-spacing:-.025em;color:var(--ink);font-size:24px}.competition-card>small{color:var(--muted);font-size:13px;font-weight:500;line-height:1.55}.competition-card>em{color:var(--green);margin-top:auto;font-size:12px;font-style:normal;font-weight:800}@media (max-width:900px){.competition-grid{grid-template-columns:1fr 1fr}}@media (max-width:600px){.competition-grid{grid-template-columns:1fr}.competition-card{min-height:0}}.smart-heading{padding:var(--panel-padding-compact) var(--panel-padding);border-radius:var(--radius-panel);background:#eef4ed;border:1px solid #cfddd2}.smart-heading h1{font-size:36px}.smart-mock-grid{margin-top:18px}.smart-mock-card{background:#f8fbf7;border-radius:18px;border:1px solid #cfddd2!important}.smart-mock-card .feature-index{color:var(--green)}.candidate-rules{border-radius:var(--radius-soft);background:#eef4ed;border:1px solid #cbdacc;margin:18px 0;padding:16px 18px}.candidate-rules strong{font-size:13px}.candidate-rules p{color:var(--muted);margin:7px 0 0;font-size:13px;line-height:1.65}.mental-continue{touch-action:manipulation;-webkit-tap-highlight-color:transparent;min-width:150px}.mental-feedback .mental-continue{grid-area:1/2/3}@media (max-width:700px){.mental-feedback{grid-template-columns:1fr}.mental-feedback p,.mental-feedback .mental-continue{grid-area:auto/1}.mental-feedback .mental-continue{width:100%;min-height:54px;margin-top:8px}}.number-grid button.section-locked{opacity:.42;color:#8a918d;cursor:not-allowed;background:#eef0ed;text-decoration:line-through}.number-grid button.section-locked.answered{color:#6e7a72;background:#e3ebe4}.section-chip{color:var(--green);letter-spacing:.04em;background:#eef4ed;border:1px solid #cbdacc;border-radius:999px;align-items:center;margin-left:10px;padding:5px 9px;font-size:11px;font-weight:800;display:inline-flex}.section-break-card{text-align:left;max-width:760px}.section-break-card .candidate-rules{margin-top:22px;margin-bottom:24px}.section-break-card h1{margin-bottom:12px}.smart-solution-entry{margin-top:16px}.smart-solution-launch{text-align:left;width:100%;color:var(--ink);background:linear-gradient(135deg,#fff8f2,#f7fbf5);border:1px solid #f1c6ad;border-radius:16px;align-items:center;gap:12px;padding:16px 18px;transition:all .18s;display:flex}.smart-solution-launch:hover{transform:translateY(-1px);box-shadow:0 14px 36px #27362d14}.smart-solution-launch>span{background:#fff;border-radius:13px;place-items:center;width:42px;height:42px;font-size:22px;display:grid;box-shadow:0 5px 18px #0000000d}.smart-solution-launch>div{flex:1;gap:3px;display:grid}.smart-solution-launch strong{font-size:15px}.smart-solution-launch small{color:var(--muted);font-size:11px}.smart-solution-launch b{color:var(--accent-dark);font-size:12px}.solution-quality-note{color:#8a681e!important;margin:7px 3px 0!important;font-size:11px!important}.smart-solution-player{background:linear-gradient(#fff,#fbfcfa);border:1px solid #d8dfd7;border-radius:22px;margin-top:18px;overflow:hidden;box-shadow:0 18px 55px #1c312312}.solution-player-head{background:#f4f8f2e0;border-bottom:1px solid #e7ebe6;justify-content:space-between;align-items:center;padding:16px 18px;display:flex}.solution-player-head>div{align-items:center;gap:10px;display:flex}.solution-player-head>div>div{gap:2px;display:grid}.solution-player-head small{color:var(--muted);letter-spacing:.06em;font-size:10px;font-weight:800}.solution-player-head strong{font-size:17px}.solution-mascot{background:#fff3df;border-radius:14px;place-items:center;width:42px;height:42px;font-size:24px;display:grid}.solution-close{color:var(--muted);background:0 0;border:0;font-size:12px}.solution-stage{grid-template-columns:minmax(0,1.25fr) minmax(260px,.75fr);min-height:360px;display:grid}.solution-stage>div:first-child{min-height:360px}.solution-source-frame{background:radial-gradient(circle at 50% 40%,#fff 0,#f5f7f2 72%);place-items:center;padding:24px;display:grid;position:relative;overflow:hidden}.solution-source-frame img{object-fit:contain;filter:drop-shadow(0 12px 20px #2a382f17);max-width:100%;max-height:330px;animation:5s ease-in-out infinite solutionFloat}.solution-scanline{background:linear-gradient(90deg,transparent,var(--accent),transparent);height:2px;animation:4s ease-in-out infinite solutionScan;position:absolute;left:12%;right:12%;box-shadow:0 0 12px #ff7a4552}@keyframes solutionFloat{50%{transform:translateY(-4px)scale(1.008)}}@keyframes solutionScan{0%,to{opacity:.2;top:24%}50%{opacity:.8;top:76%}}.solution-story-card{background:#fff;border-left:1px solid #e7ebe6;flex-direction:column;justify-content:center;padding:28px 24px;display:flex}.solution-step-tag{color:var(--green);letter-spacing:.08em;background:#eef4ed;border-radius:999px;align-self:flex-start;padding:5px 9px;font-size:10px;font-weight:900}.solution-story-card p{color:var(--ink)!important;margin:16px 0!important;font-size:18px!important;line-height:1.85!important}.solution-caption{border-left:3px solid var(--accent);color:#4f5b54;background:#fff7f1;border-radius:0 10px 10px 0;padding:11px 12px;font-size:12px;line-height:1.65}.solution-checkpoint{color:#775c1f;text-align:left;background:#fff9e9;border:1px dashed #e6b24a;border-radius:11px;margin-top:14px;padding:11px 12px;font-size:12px;font-weight:750}.solution-progress{justify-content:center;gap:7px;padding:14px 18px 4px;display:flex}.solution-progress button{background:#dfe4de;border:0;border-radius:999px;width:28px;height:5px;padding:0}.solution-progress button.done{background:#8fb39a}.solution-progress button.active{background:var(--accent);width:42px}.solution-controls{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;padding:12px 18px 16px;display:flex}.solution-controls button{padding:10px 13px;font-size:12px}.solution-controls select{border:1px solid var(--line);color:var(--muted);background:#fff;border-radius:10px;padding:10px 9px;font-size:12px}.solution-controls .secondary-button.active{color:var(--green);background:#edf7ef;border-color:#9fc4aa}.solution-playing{box-shadow:0 0 0 4px #ff7a451f}.solution-quality{text-align:center;color:var(--muted);background:#f8faf7;border-top:1px solid #edf0ec;padding:10px 18px;font-size:10px}.solution-quality.answer-only{color:#7a6426;background:#fff9e9}.solution-3d-stage{touch-action:none;background:radial-gradient(circle at 50% 38%,#fff9ee 0,#eef5ef 72%);width:100%;height:360px}.solution-empty-visual{text-align:center;background:radial-gradient(circle,#fff8ee,#f2f6f1);align-content:center;place-items:center;gap:8px;min-height:360px;display:grid}.solution-empty-visual>span{font-size:64px;animation:3s ease-in-out infinite solutionFloat}.solution-empty-visual strong{font-size:16px}.solution-empty-visual small{color:var(--muted)}.solution-fraction-wrap{background:#f8fbf6;align-content:center;place-items:center;gap:24px;min-height:360px;display:grid}.solution-fraction-bar{border:3px solid #314338;border-radius:14px;width:min(82%,520px);height:90px;display:flex;overflow:hidden}.solution-fraction-bar i{background:#fff;border-right:1px solid #3143384d;flex:1}.solution-fraction-bar i:last-child{border-right:0}.solution-fraction-bar i.filled{background:linear-gradient(#ffc176,#ff9b68)}.solution-fraction-wrap strong{font-size:34px}.solution-number-line{background:#f8fbf6;align-content:center;min-height:360px;padding:0 50px;display:grid;position:relative}.number-track{background:#34463b;border-radius:9px;height:5px}.number-points{justify-content:space-between;margin-top:-11px;display:flex}.number-points span{color:var(--muted);justify-items:center;gap:7px;font-size:12px;display:grid}.number-points i{background:#fff;border:4px solid #34463b;border-radius:50%;width:16px;height:16px}.number-points span.hot i{border-color:var(--accent);background:#fff1e8;transform:scale(1.3)}.number-points span.hot{color:var(--accent-dark);font-weight:900}@media (max-width:800px){.solution-stage{grid-template-columns:1fr}.solution-story-card{border-top:1px solid #e7ebe6;border-left:0}.solution-stage>div:first-child,.solution-empty-visual,.solution-3d-stage,.solution-number-line,.solution-fraction-wrap{height:280px;min-height:280px}.solution-source-frame img{max-height:245px}.solution-story-card{padding:22px 18px}.solution-story-card p{font-size:16px!important}.solution-controls{justify-content:stretch}.solution-controls button,.solution-controls select{flex:1;min-width:110px}}.dsl-stage{background:radial-gradient(circle at 50% 35%,#fffdf7 0,#f3f7f1 72%);align-content:center;gap:20px;min-height:360px;padding:26px;display:grid;overflow:hidden}.dsl-counters{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.dsl-counters i{background:linear-gradient(#ffbe72,#ff9567);border-radius:50%;width:34px;height:34px;box-shadow:inset 0 -3px #00000014,0 5px 12px #0000000f}.dsl-counters.hot i{outline:4px solid #ff7a4533;transform:scale(1.06)}.dsl-tenframe{grid-template-rows:repeat(2,58px);grid-template-columns:repeat(5,58px);justify-content:center;gap:5px;display:grid}.dsl-tenframe i{background:#fff;border:2px solid #44554a;border-radius:10px}.dsl-tenframe i.filled{background:radial-gradient(circle,#ff9c67 0 42%,#fff1e8 44%)}.dsl-tenframe.hot{filter:drop-shadow(0 0 8px #ff7a4538)}.dsl-numberline{padding:18px 14px 8px}.dsl-number-track{background:#384b3e;border-radius:99px;height:4px}.dsl-number-ticks{justify-content:space-between;margin-top:-9px;display:flex}.dsl-number-ticks span{color:var(--muted);justify-items:center;gap:6px;font-size:11px;display:grid}.dsl-number-ticks i{background:#fff;border:3px solid #384b3e;border-radius:50%;width:14px;height:14px}.dsl-numberline.hot .dsl-number-track{background:var(--accent)}.dsl-bar-row{grid-template-columns:90px minmax(0,1fr) 54px;align-items:center;gap:10px;display:grid}.dsl-bar-row>span{color:var(--muted);text-align:right;font-size:12px}.dsl-bar-row>i{background:linear-gradient(90deg,#9cc5a7,#6ea884);border-radius:10px;min-width:8px;height:34px;display:block}.dsl-bar-row>b{font-size:13px}.dsl-bar-row.hot>i{background:linear-gradient(90deg,#ffc076,#ff9567);box-shadow:0 0 0 4px #ff7a4529}.dsl-geometry{width:100%;height:300px}.dsl-geometry line{stroke:#42564a;stroke-width:4px;stroke-linecap:round}.dsl-geometry line.hot{stroke:#ff7a45;stroke-width:7px}.dsl-geometry circle{fill:#fff;stroke:#42564a;stroke-width:4px}.dsl-geometry g.hot circle{stroke:#ff7a45;stroke-width:6px}.dsl-geometry text{fill:#26362d;font-size:18px;font-weight:800}.dsl-equation{border:1px solid var(--line);background:#fff;border-radius:12px;justify-self:center;padding:12px 18px;font-family:STIX Two Math,Times New Roman,serif;font-size:28px;font-weight:700}.dsl-text{justify-self:center;font-size:17px;font-weight:750}@media (max-width:800px){.dsl-stage{min-height:280px;padding:18px}.dsl-tenframe{grid-template-rows:repeat(2,44px);grid-template-columns:repeat(5,44px)}.dsl-geometry{height:240px}.dsl-equation{font-size:22px}}.solution-book-entry{margin-top:14px}.solution-book-launch{text-align:left;width:100%;color:var(--ink);background:linear-gradient(135deg,#f8fbf5,#fffaf4);border:1px solid #d9e2d8;border-radius:16px;align-items:center;gap:12px;padding:14px 16px;transition:all .18s;display:flex}.solution-book-launch:hover{transform:translateY(-1px);box-shadow:0 12px 30px #22342712}.solution-book-launch>span{background:#fff;border-radius:12px;place-items:center;width:40px;height:40px;font-size:21px;display:grid;box-shadow:0 4px 14px #0000000d}.solution-book-launch>div{flex:1;gap:2px;display:grid}.solution-book-launch small{color:var(--muted);letter-spacing:.04em;font-size:10px;font-weight:800}.solution-book-launch strong{font-size:14px}.solution-book-launch em{color:#8a681e;font-size:10px;font-style:normal}.solution-book-launch>b{color:var(--green);font-size:11px}.solution-book-viewer{background:#f5f7f2;border:1px solid #d8dfd7;border-radius:20px;margin-top:16px;overflow:hidden;box-shadow:0 14px 40px #1c31230f}.solution-book-viewer>header{background:#fff;border-bottom:1px solid #e7ebe6;justify-content:space-between;align-items:center;padding:13px 15px;display:flex}.solution-book-viewer>header>div{align-items:center;gap:9px;display:flex}.solution-book-viewer>header>div>span{font-size:22px}.solution-book-viewer>header>div>div{gap:1px;display:grid}.solution-book-viewer header small{color:var(--muted);letter-spacing:.08em;font-size:9px;font-weight:900}.solution-book-viewer header strong{font-size:14px}.solution-book-viewer header button{color:var(--muted);background:0 0;border:0;font-size:11px}.solution-book-page{background:linear-gradient(#eef2ec,#f8faf7);place-items:start center;min-height:320px;max-height:640px;padding:16px;display:grid;overflow:auto}.solution-book-page a{max-width:100%;display:block}.solution-book-page img{background:#fff;border-radius:8px;max-width:100%;height:auto;margin:auto;display:block;box-shadow:0 8px 28px #0000001f}.solution-book-controls{background:#fff;border-top:1px solid #e7ebe6;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;padding:12px 14px;display:flex}.solution-book-controls .secondary-button{padding:8px 11px;font-size:11px}.solution-book-controls button:disabled{opacity:.4;cursor:not-allowed}.solution-book-controls label{color:var(--muted);align-items:center;gap:6px;font-size:11px;display:flex}.solution-book-controls input{border:1px solid var(--line);text-align:center;width:52px;color:var(--ink);background:#fff;border-radius:8px;padding:7px 6px}.solution-book-open{text-decoration:none}.solution-book-note{text-align:center;background:#fffdf5;color:#7a6426!important;margin:0!important;padding:9px 14px 11px!important;font-size:10px!important;line-height:1.55!important}@media (max-width:700px){.solution-book-page{min-height:240px;max-height:70vh;padding:10px}.solution-book-controls{justify-content:stretch}.solution-book-controls .secondary-button,.solution-book-controls label{flex:1;justify-content:center}.solution-book-open{text-align:center;flex-basis:100%!important}}.dsl-dicepair{border:1px solid var(--line);background:#fff;border-radius:14px;justify-content:center;align-items:center;gap:16px;padding:10px 14px;display:flex}.dsl-dicepair>div{align-items:center;gap:8px;display:flex}.dsl-dicepair i{background:linear-gradient(#fff,#f5f7f3);border:2px solid #42564a;border-radius:11px;place-items:center;width:44px;height:44px;font-size:20px;font-style:normal;font-weight:900;display:grid}.dsl-dicepair span{color:var(--muted);font-weight:900}.dsl-dicepair b{color:var(--ink);font-size:13px}.dsl-dicepair.hot{background:#fff7f2;border-color:#ff9a67;box-shadow:0 0 0 4px #ff7a451f}.dsl-dicepair.hot i{border-color:#ff7a45}.site-footer{color:#c7d8ef;background:#10284b;border-top:1px solid #d8e3f1;font-size:12px}.site-footer-inner{width:100%;max-width:var(--layout-wide);padding:32px var(--page-gutter) 34px;text-align:left;margin:0 auto}.site-footer-top{border-bottom:1px solid #ffffff2b;justify-content:space-between;align-items:center;gap:22px;margin-bottom:17px;padding-bottom:20px;display:flex}.site-footer-top strong{color:#fff;font-size:16px}.site-footer-top nav{flex-wrap:wrap;gap:10px 19px;display:flex}.site-footer p{margin:7px 0;line-height:1.65}.site-footer a{color:inherit}.site-footer a:hover{color:#fff}@media (max-width:760px){.site-footer-inner{padding-left:var(--page-gutter-mobile);padding-right:var(--page-gutter-mobile)}.site-footer-top{display:block}.site-footer-top nav{margin-top:16px}.site-footer-top strong{font-size:14px}}.dsl-reveal{opacity:0;animation:.38s cubic-bezier(.2,.8,.2,1) forwards dslReveal}@keyframes dslReveal{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.dsl-geometry .dsl-geo-shape{fill:#78aa8714;stroke:#648675;stroke-width:3px}.dsl-geometry .dsl-geo-shape.hot{fill:#ff7a451a;stroke:#ff7a45;stroke-width:6px}.dsl-geometry .dsl-angle path{fill:none;stroke:#df9a2b;stroke-width:5px;stroke-linecap:round}.dsl-geometry .dsl-angle.hot path{stroke:#ff7a45;stroke-width:7px}.dsl-geometry .dsl-angle text{fill:#8d651e;font-size:17px;font-weight:850}.dsl-geometry .dsl-point.hot circle{stroke:#ff7a45;stroke-width:6px}.cube-net-scene{justify-items:center;gap:12px;width:min(100%,620px);margin:auto;display:grid}.cube-net-stage{background:linear-gradient(145deg,#fffaf1,#f3f7f2);border:1px solid #374c3f1f;border-radius:24px;place-items:center;width:100%;min-height:330px;display:grid;overflow:hidden}.cube-net-svg{width:min(100%,520px);height:360px}.cube-net-face{opacity:0;animation:.38s cubic-bezier(.2,.8,.2,1) forwards dslReveal}.cube-net-face rect{fill:#fff3df;stroke:#42564a;stroke-width:4px}.cube-net-face text{text-anchor:middle;fill:#27362d;font-size:20px;font-weight:850}.cube-net-toggle{color:#fff;cursor:pointer;background:#27362d;border:0;border-radius:999px;padding:10px 18px;font-weight:850}.cube-net-toggle:hover{transform:translateY(-1px)}.cube-net-scene small{color:#6a756e;font-weight:650}.dsl-morphed{animation:.52s cubic-bezier(.2,.8,.2,1) dslMorph}@keyframes dslMorph{0%{opacity:.2;transform:scale(.94)}70%{transform:scale(1.04)}to{opacity:1;transform:scale(1)}}.cube-net-puzzle{justify-items:center;gap:12px;width:min(100%,680px);margin:auto;display:grid}.cube-net-puzzle-stage{background:linear-gradient(145deg,#fffdf8,#f1f6f2);border:1px solid #374c3f1f;border-radius:24px;place-items:center;width:100%;min-height:340px;display:grid;overflow:hidden}.cube-net-puzzle-svg{width:min(100%,560px);height:330px}.cube-net-puzzle-cell{cursor:pointer;transition:opacity .18s,transform .18s}.cube-net-puzzle-cell rect{fill:#fff3df;stroke:#42564a;stroke-width:4px}.cube-net-puzzle-cell text{text-anchor:middle;fill:#27362d;pointer-events:none;font-size:22px;font-weight:900}.cube-net-puzzle-cell:hover rect{fill:#ffe2bd;stroke:#ff7a45}.cube-net-puzzle-cell.removed{opacity:.18}.cube-net-puzzle-actions{flex-wrap:wrap;justify-content:center;align-items:center;gap:9px;display:flex}.cube-net-puzzle-actions span{color:#4b5c52;font-weight:760}.cube-net-puzzle-actions button{color:#fff;cursor:pointer;background:#27362d;border:0;border-radius:999px;padding:9px 15px;font-weight:850}.cube-net-puzzle-actions button.secondary{color:#33443a;background:#e8eee9}.cube-net-puzzle small{color:#6a756e;font-weight:650}.cube-net-puzzle-teacher{display:none}.image-overlay-scene{justify-items:center;gap:10px;width:min(100%,760px);margin:auto;display:grid}.image-overlay-wrap{place-items:center;max-width:100%;max-height:340px;display:inline-grid;position:relative}.image-overlay-wrap>img{object-fit:contain;border-radius:12px;max-width:100%;max-height:340px;display:block;box-shadow:0 10px 28px #24342a14}.image-overlay-svg{pointer-events:none;width:100%;height:100%;position:absolute;inset:0;overflow:visible}.image-overlay-trace{fill:none;stroke:#e89a2c;stroke-width:1.2px;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:3 2;filter:drop-shadow(0 1px 1px #0000001f);animation:1.1s ease-out both imageTrace}.image-overlay-trace.hot{stroke:#ff6c3d;stroke-width:1.8px;stroke-dasharray:none}@keyframes imageTrace{0%{stroke-dashoffset:45px;opacity:.1}to{stroke-dashoffset:0;opacity:1}}.image-overlay-spot ellipse{fill:#ffb55421;stroke:#d89023;stroke-width:.65px}.image-overlay-spot.hot ellipse{fill:#ff6c3d29;stroke:#ff6c3d;stroke-width:1.1px}.image-overlay-spot text{fill:#7b5a1f;paint-order:stroke;stroke:#fff;stroke-width:.7px;font-size:2.6px;font-weight:900}.image-overlay-pick{color:#27362d;cursor:pointer;z-index:3;background:#ffffffeb;border:2px solid #42564a;border-radius:999px;min-width:34px;height:34px;padding:0 9px;font-weight:900;position:absolute;transform:translate(-50%,-50%);box-shadow:0 4px 12px #00000017}.image-overlay-pick:hover{border-color:#ff7a45;transform:translate(-50%,-50%)scale(1.06)}.image-overlay-pick.correct{color:#28613a;background:#e9f6ec;border-color:#58a36c}.image-overlay-pick.wrong{color:#8d3c20;background:#fff1eb;border-color:#ef835d}.image-overlay-feedback{color:#6a756e;min-height:20px;font-size:12px;font-weight:800}.image-overlay-feedback.correct{color:#36764b}.image-overlay-feedback.wrong{color:#a64e30}@media (max-width:800px){.image-overlay-wrap,.image-overlay-wrap>img{max-height:250px}.image-overlay-pick{min-width:30px;height:30px;font-size:11px}}.flip-card-scene,.chase-scene{align-content:center;justify-items:center;gap:16px;min-height:320px;display:grid}.flip-card-board{perspective:900px;place-items:center;width:min(82%,520px);height:170px;display:grid}.flip-card-object{width:330px;height:110px;transform-style:preserve-3d;background:#fff;border:4px solid #42564a;border-radius:12px;justify-content:space-around;align-items:center;transition:transform .65s cubic-bezier(.2,.8,.2,1);display:flex}.flip-circle{background:#27362d;border-radius:50%;width:52px;height:52px}.flip-square{background:#27362d;width:54px;height:54px}.flip-triangle{border-bottom:58px solid #27362d;border-left:31px solid #0000;border-right:31px solid #0000;width:0;height:0}.flip-card-actions,.chase-actions{flex-wrap:wrap;justify-content:center;gap:9px;display:flex}.flip-card-actions button,.chase-actions button{color:#fff;background:#27362d;border:0;border-radius:999px;padding:10px 15px;font-weight:850}.flip-card-actions button:disabled,.chase-actions button:disabled{opacity:.35}.flip-card-actions .secondary,.chase-actions .secondary{color:#33443a;background:#e8eee9}.flip-card-scene>strong{color:#4b5c52;font-size:14px}.chase-strip{grid-template-columns:repeat(15,minmax(28px,42px));max-width:100%;display:grid;overflow:auto}.chase-tile{background:#fff;border:2px solid #42564a;border-right:0;place-items:center;height:64px;display:grid;position:relative}.chase-tile:last-child{border-right:2px solid #42564a}.chase-tile>span{white-space:nowrap;font-size:22px}.chase-tile>b{font-size:12px;position:absolute;bottom:-26px}.chase-tile.meet{background:#fff1df;box-shadow:inset 0 0 0 4px #ff9b68}.chase-info{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;margin-top:18px;display:flex}.chase-info span{background:#eef4ed;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:800}.chase-info strong{color:#b9552f}@media (max-width:800px){.flip-card-object{width:260px;height:92px}.flip-circle{width:42px;height:42px}.flip-square{width:44px;height:44px}.flip-triangle{border-bottom-width:48px;border-left-width:25px;border-right-width:25px}.chase-strip{grid-template-columns:repeat(15,34px)}}.step-reveal-scene{align-content:center;justify-items:center;gap:14px;width:min(100%,720px);min-height:320px;margin:auto;display:grid}.step-reveal-stack{gap:10px;width:min(92%,640px);display:grid}.step-reveal-card{opacity:.72;background:#fff;border:1px solid #dfe5df;border-radius:14px;grid-template-columns:38px 1fr;align-items:center;gap:10px;padding:12px 14px;display:grid;transform:scale(.985)}.step-reveal-card>span{color:#3c5d47;background:#edf3ed;border-radius:50%;place-items:center;width:32px;height:32px;font-size:12px;font-weight:900;display:grid}.step-reveal-card>strong{color:#36443b;font-size:15px;line-height:1.55}.step-reveal-card.active{opacity:1;border-color:#ffb485;animation:.28s both stepRevealPop;transform:scale(1);box-shadow:0 8px 22px #ff7a451a}.step-reveal-card.active>span{color:#b75228;background:#fff0e5}@keyframes stepRevealPop{0%{opacity:.15;transform:translateY(8px)scale(.98)}to{opacity:1;transform:none}}.step-reveal-actions{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.step-reveal-actions button{color:#fff;background:#27362d;border:0;border-radius:999px;padding:10px 14px;font-weight:850}.step-reveal-actions button:disabled{opacity:.35}.step-reveal-actions .secondary{color:#33443a;background:#e8eee9}.step-reveal-scene>small{color:#748078;font-weight:700}.parent-auth-form{gap:14px;display:grid}.parent-auth-form label{color:#33443a;gap:7px;font-weight:800;display:grid}.parent-auth-form input:not([type=checkbox]),.forgot-inline input{min-height:44px;font:inherit;background:#fff;border:1px solid #cfd9d2;border-radius:11px;padding:0 13px}.check-line{align-items:flex-start;font-size:13px;line-height:1.45;grid-template-columns:none!important;gap:9px!important;font-weight:650!important;display:flex!important}.check-line input{margin-top:2px}.auth-switch{color:#67736c;font-size:13px}.forgot-inline{gap:8px;margin-top:14px;display:flex}.forgot-inline input{flex:1}.parent-login-entry{background:#f6f8f5;border:1px solid #dde5de;border-radius:14px;gap:7px;margin-top:18px;padding:14px;display:grid}.parent-login-entry>span{color:#6d786f;font-size:12px}.parent-login-entry>div{flex-wrap:wrap;gap:8px;display:flex}.parent-head{width:100%;max-width:var(--layout-standard);padding:0 var(--page-gutter);justify-content:space-between;align-items:center;gap:20px;margin:30px auto 0;display:flex}.family-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:22px;display:grid}.legal-page{width:100%;max-width:var(--layout-wide);padding:var(--page-top) var(--page-gutter) var(--page-bottom);margin:0 auto;line-height:1.8}.legal-page>p,.legal-page>h2{max-width:var(--layout-reading)}.legal-page h1{font-size:36px}.legal-page h2{margin-top:28px}.success-box{color:#2f6d42;background:#edf8ef;border:1px solid #cfe6d4;border-radius:12px;padding:12px 14px}@media (max-width:700px){.forgot-inline{display:grid}.parent-head{flex-direction:column;align-items:flex-start}}.competition-intro{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-panel);padding:var(--panel-padding);box-shadow:var(--shadow-soft);gap:26px;margin:-28px 0 54px;display:grid}.competition-intro-lead{max-width:900px}.competition-intro-lead .eyebrow{margin-bottom:10px}.competition-intro-lead h2{letter-spacing:-.035em;margin:0 0 12px;font-size:34px}.competition-intro-lead p{color:var(--muted);margin:0;font-size:15px;line-height:1.8}.competition-strengths{flex-wrap:wrap;gap:8px;margin-top:18px;display:flex}.competition-strengths span{background:var(--soft-green);color:var(--green);border-radius:999px;padding:7px 10px;font-size:11px;font-weight:800}.competition-fact-grid{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}.competition-fact-grid article{border-top:1px solid var(--line);gap:7px;padding:16px 4px 2px;display:grid}.competition-fact-grid span{color:var(--accent-dark);letter-spacing:.04em;font-size:11px;font-weight:900}.competition-fact-grid strong{font-size:14px;font-weight:720;line-height:1.65}.competition-coverage{background:#f6f8f4;border-radius:16px;grid-template-columns:repeat(4,1fr);gap:10px;padding:14px;display:grid}.competition-coverage div{border-right:1px solid #dde5de;padding:8px 10px}.competition-coverage div:last-child{border-right:0}.competition-coverage strong{font-size:20px;display:block}.competition-coverage span{color:var(--muted);margin-top:4px;font-size:10px;font-weight:700;display:block}.competition-intro-note{background:#fff8ec;border-radius:12px;padding:14px 16px;color:#705d2c!important;margin:0!important;font-size:12px!important;line-height:1.7!important}@media (max-width:760px){.competition-intro{padding:var(--panel-padding);margin-top:-34px}.competition-intro-lead h2{font-size:27px}.competition-fact-grid{grid-template-columns:1fr}.competition-coverage{grid-template-columns:1fr 1fr}.competition-coverage div{border-bottom:1px solid #dde5de;border-right:0}.competition-coverage div:nth-last-child(-n+2){border-bottom:0}}.competition-countdown{border-top:1px solid var(--line);flex-wrap:wrap;align-items:baseline;gap:10px;margin-top:18px;padding-top:14px;display:flex}.competition-countdown>span{letter-spacing:.08em;color:var(--muted);font-size:10px;font-weight:900}.competition-countdown>strong{font-size:14px}.competition-countdown>b{color:var(--accent-dark);font-size:13px}.competition-countdown>small{color:var(--muted);font-size:11px;font-weight:650}@media (max-width:600px){.competition-countdown{gap:7px 9px}.competition-countdown>small{flex-basis:100%}}.coaching-panel{background:#f8fbf6;border:1px solid #d9e2d7;border-radius:16px;width:100%;max-width:680px;margin:-18px auto 28px;padding:16px 18px}.coaching-head{justify-content:space-between;align-items:baseline;gap:14px;display:flex}.coaching-head b{font-size:15px}.coaching-head span{color:var(--muted);font-size:11px}.coaching-step{border:1px solid var(--line);background:#fff;border-radius:12px;margin-top:12px;padding:13px 15px}.coaching-step strong{color:var(--accent-dark);font-size:12px}.coaching-step p{margin:5px 0 0;line-height:1.6}.coaching-actions{align-items:center;gap:8px;margin-top:12px;display:flex}.coaching-actions small{color:var(--muted)}@media (max-width:600px){.coaching-head{gap:4px;display:grid}.coaching-actions{flex-wrap:wrap}.coaching-actions button{min-height:44px}.coaching-panel{margin-top:-10px}}.discovery-choices{gap:12px;width:100%;max-width:680px;margin:0 auto 22px;display:grid}.discovery-choice{border:1px solid var(--line);text-align:left;font:inherit;color:var(--ink);cursor:pointer;background:#fff;border-radius:16px;gap:6px;padding:18px 20px;display:grid}.discovery-choice strong{font-size:20px}.discovery-choice small{color:var(--muted);line-height:1.45}.discovery-choice:hover{border-color:var(--accent)}.discovery-choice.preferred{background:#edf7ef;border-color:#9bc6a5}.discovery-choice.direct-choice{background:#fff8e8;border-color:#dfc98d}.discovery-choice:disabled{opacity:1;cursor:default}.discovery-empty{text-align:center;align-items:center;gap:12px;min-height:360px}.discovery-empty h1{margin:0;font-size:32px}.discovery-empty p{max-width:520px;color:var(--muted);line-height:1.7}.discovery-empty .primary-button{margin-top:8px}.mental-card .mental-meta{align-items:flex-start;gap:24px}.mental-card .mental-meta>div{gap:5px;display:grid}.mental-card .mental-meta>div small{color:var(--muted);font-size:12px}.mental-card .mental-meta>b{color:var(--green);background:var(--soft-green);white-space:nowrap;border-radius:999px;padding:7px 10px;font-size:12px}.discovery-choices{grid-template-columns:1fr;gap:10px;max-width:720px}.discovery-choice{border-radius:14px;grid-template-columns:38px minmax(0,1fr);align-items:center;gap:14px;min-height:68px;padding:15px 18px}.discovery-choice-index{border:1px solid var(--line);width:34px;height:34px;color:var(--green);background:#f1f4ef;border-radius:10px;place-items:center;font-weight:900;display:grid}.discovery-choice>div{gap:4px;display:grid}.discovery-choice strong{font-size:18px;line-height:1.35}.discovery-choice:hover .discovery-choice-index{color:var(--accent-dark);background:#fff1e8;border-color:#f2b99e}.discovery-choice.preferred .discovery-choice-index{background:#dff0e3;border-color:#9bc6a5}.discovery-choice.direct-choice .discovery-choice-index{background:#fff0c9;border-color:#dfc98d}.mental-card:has(.discovery-choices){justify-content:flex-start;min-height:0;padding:38px 46px 34px}.mental-card:has(.discovery-choices) .mental-prompt{margin:42px 0 30px;font-size:54px}.mental-card:has(.discovery-choices) .mental-hint{margin-top:8px;font-size:12px;line-height:1.6}.mental-card:has(.discovery-choices) .coaching-panel{margin:0 auto 16px}.cognitive-profile-card{padding:28px 30px}.cognitive-profile-head{grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:24px;display:grid}.cognitive-profile-head h2{margin:2px 0 8px}.cognitive-profile-head p{color:var(--muted);max-width:720px;margin:0;line-height:1.65}.evidence-badge{border:1px solid var(--line);text-align:center;background:#f4f7f2;border-radius:14px;min-width:116px;padding:12px 14px}.evidence-badge strong{font-size:28px;line-height:1;display:block}.evidence-badge span,.evidence-badge small{color:var(--muted);margin-top:4px;font-size:11px;display:block}.cognitive-bars{gap:14px;margin-top:24px;display:grid}.cognitive-bar-row{grid-template-columns:145px minmax(120px,1fr) 56px;align-items:center;gap:14px;display:grid}.cognitive-bar-row>div:first-child{gap:2px;display:grid}.cognitive-bar-row b{font-size:13px}.cognitive-bar-row small{color:var(--muted);font-size:10px}.cognitive-bar-track{background:#edf1eb;border-radius:999px;height:10px;overflow:hidden}.cognitive-bar-track i{background:linear-gradient(90deg,#6c9f7a,#ff9b66);border-radius:999px;min-width:0;height:100%;display:block}.cognitive-bar-row>strong{text-align:right;font-variant-numeric:tabular-nums;font-size:15px}@media (max-width:700px){.mental-card:has(.discovery-choices){padding:26px 16px}.mental-card:has(.discovery-choices) .mental-prompt{margin:32px 0 24px;font-size:42px}.mental-card .mental-meta{gap:10px;display:grid}.mental-card .mental-meta>b{justify-self:start}.discovery-choice{grid-template-columns:34px minmax(0,1fr);padding:14px 12px}.discovery-choice strong{font-size:16px}.cognitive-profile-card{padding:22px 18px}.cognitive-profile-head{grid-template-columns:1fr}.evidence-badge{text-align:left;justify-self:start;align-items:baseline;gap:6px;display:flex}.evidence-badge strong,.evidence-badge span,.evidence-badge small{display:inline}.cognitive-bar-row{grid-template-columns:110px 1fr 48px;gap:9px}.cognitive-bar-row small{display:none}}.training-launchpad{padding:var(--panel-padding);border-radius:var(--radius-panel);box-shadow:var(--shadow-soft);background:linear-gradient(145deg,#fffdf9,#f6faf5);border:1px solid #d6dfd7;margin-top:24px}.training-launchpad-head{justify-content:space-between;align-items:flex-end;gap:28px;margin-bottom:22px;display:flex}.training-launchpad-head .eyebrow{margin-bottom:8px}.training-launchpad-head h2{letter-spacing:-.035em;margin:0 0 7px;font-size:34px}.training-launchpad-head p{color:var(--muted);margin:0;font-size:13px}.grade-switcher{background:#edf2ec;border:1px solid #dbe3dc;border-radius:14px;gap:6px;padding:5px;display:flex}.grade-switcher button{color:#59675f;background:0 0;border:0;border-radius:10px;place-items:center;width:56px;height:48px;font-size:17px;font-weight:900;line-height:1;display:grid}.grade-switcher button small{color:var(--muted);margin-top:-4px;font-size:8px;font-weight:750}.grade-switcher button.active{background:var(--ink);color:#fff;box-shadow:0 5px 14px #17231d2e}.grade-switcher button.active small{color:#bac5bd}.training-primary-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.training-mode-card{border:1px solid var(--line);background:#fff;border-radius:20px;flex-direction:column;min-height:236px;padding:22px;transition:transform .18s,box-shadow .18s,border-color .18s;display:flex;position:relative;overflow:hidden}.training-mode-card:after{content:"";background:#235a420b;border-radius:50%;width:150px;height:150px;position:absolute;bottom:-78px;right:-58px}.training-mode-card:hover{border-color:#bccbbf;transform:translateY(-3px);box-shadow:0 16px 38px #1e302417}.training-mode-card--adaptive{color:#fff;background:linear-gradient(155deg,#173026,#244838);border-color:#244838}.training-mode-card--adaptive:after{background:#ffffff0f}.training-mode-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.training-mode-number{letter-spacing:.12em;opacity:.62;font-size:12px;font-weight:900}.training-mode-top em{letter-spacing:.08em;color:#2f6a43;background:#edf5ef;border-radius:999px;padding:6px 8px;font-size:10px;font-style:normal;font-weight:900}.training-mode-card--adaptive .training-mode-top em{color:#dfe9e2;background:#ffffff1f}.training-mode-card h3{letter-spacing:-.035em;margin:28px 0 9px;font-size:30px}.training-mode-card p{color:var(--muted);max-width:290px;margin:0;font-size:13px;line-height:1.65}.training-mode-card--adaptive p{color:#c7d4cb}.training-mode-card>strong{z-index:1;margin-top:auto;padding-top:24px;font-size:13px;position:relative}.training-mode-card>strong span{margin-left:5px;transition:transform .15s;display:inline-block}.training-mode-card:hover>strong span{transform:translate(4px)}.training-tool-row{grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px;display:grid}.training-tool-row a{border:1px solid var(--line);background:#fff;border-radius:14px;grid-template-columns:auto 1fr;align-items:center;column-gap:10px;min-height:74px;padding:13px 15px;display:grid}.training-tool-row a>span{width:42px;height:42px;color:var(--green);background:#f0f4ef;border-radius:11px;grid-row:1/3;place-items:center;font-size:10px;font-weight:900;display:grid}.training-tool-row b{font-size:14px}.training-tool-row small{color:var(--muted);font-size:10px}.training-tool-row a:hover{background:#fcfdfb;border-color:#b6c5ba}.student-profile-strip{border:1px solid var(--line);background:#fff;border-radius:18px;align-items:center;gap:18px;margin-top:14px;padding:18px 22px;display:flex}.student-profile-strip>div{min-width:0}.student-profile-strip .eyebrow{margin:0 0 5px}.student-profile-strip h2{margin:0 0 3px;font-size:18px}.student-profile-strip p{color:var(--muted);margin:0;font-size:12px;line-height:1.5}.student-profile-strip .secondary-button{flex:none;margin-left:auto;padding:11px 15px;font-size:12px}@media (max-width:900px){.training-launchpad-head{flex-direction:column;align-items:flex-start}.grade-switcher{width:100%;overflow-x:auto}.grade-switcher button{flex:1 0 52px}.training-primary-grid{grid-template-columns:1fr}.training-mode-card{min-height:190px}.training-tool-row{grid-template-columns:1fr 1fr 1fr}}@media (max-width:650px){.training-launchpad{padding:var(--panel-padding);border-radius:var(--radius-panel)}.training-launchpad-head h2{font-size:28px}.grade-switcher{padding:4px}.grade-switcher button{height:44px}.training-mode-card{min-height:176px;padding:18px}.training-mode-card h3{margin-top:20px;font-size:26px}.training-tool-row{grid-template-columns:1fr}.student-profile-strip{display:grid}.student-profile-strip .secondary-button{justify-self:start;margin-left:0}.arithmetic-home>.hero-card{padding-bottom:36px}.arithmetic-home>.hero-card h1{font-size:var(--title-hero)}.arithmetic-home>.hero-card .hero-copy{font-size:15px}}.analysis-section{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-panel);padding:var(--panel-padding);box-shadow:var(--shadow-soft);margin-top:18px}.analysis-section-head{justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:22px;display:flex}.analysis-section-head .eyebrow{margin-bottom:7px}.analysis-section-head h2{letter-spacing:-.025em;margin:0 0 7px;font-size:25px}.analysis-section-head p{color:var(--muted);max-width:720px;margin:0;font-size:12px;line-height:1.65}.analysis-legend{color:var(--muted);flex-wrap:wrap;justify-content:flex-end;gap:11px;font-size:10px;display:flex}.analysis-legend span{white-space:nowrap;align-items:center;gap:5px;display:flex}.analysis-legend i{background:#cbd2cc;border-radius:50%;width:8px;height:8px}.analysis-legend i.good{background:#5f9a71}.analysis-legend i.watch{background:#ef9a55}.skill-visual-list{gap:10px;display:grid}.skill-visual-row{border-top:1px solid #edf0ec;grid-template-columns:minmax(170px,1.1fr) minmax(420px,2fr);align-items:center;gap:24px;padding:15px 0;display:grid}.skill-visual-label{gap:3px;display:grid}.skill-visual-label b{font-size:14px}.skill-visual-label span,.skill-visual-label small{color:var(--muted);font-size:10px;line-height:1.4}.skill-score-grid{grid-template-columns:repeat(4,1fr);gap:9px;display:grid}.skill-score{grid-template-columns:20px minmax(42px,1fr) 28px;align-items:center;gap:7px;display:grid}.skill-score>span{color:#607068;font-size:10px;font-weight:900}.skill-score>div{background:#edf0ec;border-radius:999px;height:8px;overflow:hidden}.skill-score>div i{background:#8fa99a;border-radius:999px;height:100%;display:block}.skill-score.good>div i{background:#5e9870}.skill-score.watch>div i{background:#ec9859}.skill-score.empty>div i{background:#d7ddd8}.skill-score>strong{text-align:right;font-size:11px}.focus-summary{background:#fff4eb;border:1px solid #f1cfb9;border-radius:13px;min-width:180px;padding:11px 14px}.focus-summary small{color:#9b5b36;letter-spacing:.08em;font-size:9px;font-weight:900;display:block}.focus-summary strong{margin-top:3px;font-size:12px;display:block}.ability-node-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;display:grid}.ability-node{border:1px solid var(--line);background:#fbfcfa;border-radius:16px;padding:15px}.ability-node header{justify-content:space-between;align-items:flex-start;gap:10px;display:flex}.ability-node header b{font-size:13px;line-height:1.4}.ability-node header span{color:#6c7770;background:#eef1ee;border-radius:999px;flex:none;padding:5px 7px;font-size:9px;font-weight:900}.ability-node.good header span{color:#347048;background:#e6f3e8}.ability-node.watch{background:#fffaf5;border-color:#efd8c6}.ability-node.watch header span{color:#a55b31;background:#fff0e5}.ability-node-main{align-items:baseline;gap:6px;margin:18px 0 10px;display:flex}.ability-node-main strong{letter-spacing:-.04em;font-size:30px}.ability-node-main small{color:var(--muted);font-size:9px}.ability-node-main em{color:var(--muted);margin-left:auto;font-size:10px;font-style:normal}.evidence-track{background:#e9eeea;border-radius:999px;height:5px;overflow:hidden}.evidence-track i{background:#829c8b;border-radius:999px;height:100%;display:block}.ability-node.watch .evidence-track i{background:#e29a63}.ability-node footer{color:var(--muted);justify-content:space-between;gap:8px;margin-top:7px;font-size:9px;display:flex}.compact-analysis{padding-bottom:22px}.probe-list{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:10px;display:grid}.probe-list article{border:1px solid var(--line);border-radius:14px;padding:14px}.probe-list article>div:first-child{justify-content:space-between;gap:10px;display:flex}.probe-list article>div:first-child b{font-size:12px}.probe-list article>div:first-child span{color:var(--muted);font-size:9px}.probe-ratio{grid-template-columns:auto 1fr auto;align-items:center;gap:8px;margin:13px 0 9px;display:grid}.probe-ratio>span{color:var(--muted);font-size:9px}.probe-ratio>i{background:#edf0ec;border-radius:999px;height:5px;display:block;overflow:hidden}.probe-ratio>i b{background:#87a594;border-radius:999px;height:100%;display:block}.probe-status{font-size:10px}.probe-status.strategy_gap{color:#ae5a2b}.probe-status.efficient{color:#357049}.probe-status.general_slow{color:#8a6514}.probe-status.monitor,.probe-status.insufficient{color:var(--muted)}.strategy-visual-list{gap:5px;display:grid}.strategy-visual-row{border-top:1px solid #edf0ec;grid-template-columns:minmax(230px,1.5fr) minmax(180px,2fr) 44px 52px;align-items:center;gap:13px;padding:12px 0;display:grid}.strategy-title{gap:3px;display:grid}.strategy-title b{font-size:12px;line-height:1.45}.strategy-title span{color:var(--muted);font-size:9px}.strategy-bar{background:#edf0ec;border-radius:999px;height:8px;overflow:hidden}.strategy-bar i{background:#8ea697;border-radius:999px;height:100%;display:block}.strategy-visual-row.good .strategy-bar i{background:#5f9870}.strategy-visual-row.watch .strategy-bar i{background:#eb9758}.strategy-visual-row>strong{text-align:right;font-size:11px}.strategy-visual-row>small{color:var(--muted);text-align:right;font-size:9px}@media (max-width:800px){.analysis-section{padding:22px 18px}.analysis-section-head{display:grid}.analysis-legend{justify-content:flex-start}.skill-visual-row{grid-template-columns:1fr;gap:10px}.skill-score-grid{grid-template-columns:1fr 1fr}.strategy-visual-row{grid-template-columns:minmax(150px,1fr) 1.3fr 38px}.strategy-visual-row>small{display:none}.focus-summary{justify-self:start}}@media (max-width:520px){.skill-score-grid,.ability-node-grid,.probe-list{grid-template-columns:1fr}.strategy-visual-row{grid-template-columns:1fr 56px}.strategy-bar{grid-area:2/1/auto/-1}.strategy-visual-row>strong{grid-area:1/2}.analysis-section-head h2{font-size:22px}}.compact-coaching{max-width:620px;margin:-12px auto 22px;padding:13px 15px}.compact-coaching .coaching-head b{font-size:13px}.compact-coaching .coaching-head span{font-size:10px}.compact-coaching .coaching-step{margin-top:9px;padding:11px 13px}.compact-coaching .coaching-step p{margin-top:4px;font-size:13px}.compact-coaching .coaching-actions{margin-top:9px}.compact-coaching .coaching-actions button{padding:9px 12px;font-size:11px}.coaching-direct{background:#f5f8f3;border:1px solid #dbe4da;border-radius:13px;align-items:center;gap:12px;width:100%;max-width:620px;margin:-8px auto 22px;padding:13px 16px;display:flex}.coaching-direct>span{letter-spacing:.08em;color:#8a572f;background:#fff0e5;border-radius:999px;flex:none;padding:5px 8px;font-size:10px;font-weight:900}.coaching-direct>strong{letter-spacing:.01em;font-size:16px;line-height:1.45}.coaching-direct+.mental-answer-form{margin-top:2px}@media (max-width:600px){.coaching-direct{align-items:flex-start;padding:11px 12px}.coaching-direct>strong{font-size:14px}}.competition-brand{justify-content:flex-start;align-items:center;height:48px;margin-bottom:4px;display:flex;overflow:hidden}.competition-brand img{object-fit:contain;object-position:left center;width:auto;max-width:156px;height:auto;max-height:44px;display:block}.competition-brand-wordmark{align-items:center;gap:10px;min-height:42px;display:flex}.competition-brand-wordmark b{letter-spacing:-.04em;color:var(--ink);font-size:20px;font-weight:950;line-height:1}.competition-brand-wordmark span{letter-spacing:.08em;color:#526158;max-width:150px;font-size:9px;font-weight:900;line-height:1.18}.competition-card.active .competition-brand-wordmark b{color:var(--accent-dark)}.competition-brand--large{height:66px;margin:0}.competition-brand--large img{max-width:220px;max-height:62px}.competition-brand--large .competition-brand-wordmark b{font-size:28px}.competition-brand--large .competition-brand-wordmark span{max-width:190px;font-size:10px}.competition-intro-brand{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;margin-bottom:18px;padding-bottom:16px;display:flex}.competition-intro-brand>a{color:var(--green);background:var(--soft-green);border-radius:9px;flex:none;padding:8px 10px;font-size:11px;font-weight:800}.competition-intro-brand>a:hover{text-decoration:underline}@media (max-width:600px){.competition-brand{height:42px}.competition-brand img{max-width:140px;max-height:38px}.competition-brand--large{height:56px}.competition-brand--large img{max-width:180px;max-height:52px}.competition-intro-brand{align-items:flex-start}.competition-intro-brand>a{font-size:10px}}.paper-brand{align-items:baseline;gap:9px;min-height:28px;margin-bottom:12px;display:flex}.paper-brand>b{letter-spacing:-.02em;color:var(--ink);font-size:18px;font-weight:950}.paper-brand>span{letter-spacing:.07em;color:var(--muted);text-transform:uppercase;font-size:9px;font-weight:850;line-height:1.2}.paper-brand--stage{margin-bottom:16px}.paper-brand--stage>b{color:var(--green);font-size:22px}.exam-brand{align-items:baseline;gap:8px;display:flex}.exam-brand>b{letter-spacing:-.02em;color:var(--ink);font-size:18px;font-weight:950;line-height:1}.exam-brand>span{letter-spacing:.07em;color:var(--muted);text-transform:uppercase;font-size:8px;font-weight:850;line-height:1.2}.exam-title-brand{gap:5px;display:grid}.exam-title-brand .exam-brand b{font-size:16px}.exam-title-brand .exam-brand span{font-size:7px}.candidate-brand-row{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;margin-bottom:26px;padding-bottom:18px;display:flex}.candidate-brand-row .exam-brand b{font-size:26px}.candidate-brand-row .exam-brand span{font-size:9px}.candidate-brand-row>a{color:var(--green);background:var(--soft-green);border-radius:9px;padding:8px 10px;font-size:10px;font-weight:800}@media (max-width:600px){.paper-brand{gap:3px;display:grid}.paper-brand>span{font-size:8px}.candidate-brand-row{align-items:flex-start}.candidate-brand-row .exam-brand{gap:3px;display:grid}.candidate-brand-row .exam-brand b{font-size:22px}.exam-topbar .exam-brand span{display:none}}.official-archive-grid{margin-top:8px}.official-archive-card{flex-direction:column;min-height:210px;display:flex}.official-archive-card>p{color:var(--muted);flex:1}.official-archive-card>a.primary-button{justify-content:center;align-self:flex-start;align-items:center;text-decoration:none;display:inline-flex}.concept-label-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.math-verification-badge{color:#17613a;background:#f1faf5;border:1px solid #bfd9ca;border-radius:999px;align-items:center;gap:6px;width:max-content;padding:6px 10px;font-size:12px;line-height:1;text-decoration:none;display:inline-flex}.math-verification-badge:hover{background:#e8f6ee;border-color:#79b592}.math-verification-badge.formal span{color:#fff;background:#17613a;border-radius:50%;place-items:center;width:17px;height:17px;font-size:11px;display:grid}.review-trust{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;display:flex}.verification-shell{width:100%;max-width:var(--layout-standard);padding:var(--page-top) var(--page-gutter) var(--page-bottom);margin:0 auto}.verification-hero{border-radius:var(--radius-hero);color:#fff;background:#14241c;padding:clamp(32px,4vw,44px)}.verification-hero h1{font-size:var(--title-hero);margin:8px 0 14px}.verification-hero p{color:#dbe8e0;max-width:820px;font-size:18px;line-height:1.75}.verification-principle{background:#1c3026;border:1px solid #416050;border-radius:16px;align-items:center;gap:16px;margin-top:24px;padding:16px 18px;display:flex}.verification-principle span{color:#c6d8cd}.verification-levels{grid-template-columns:repeat(4,1fr);gap:14px;margin:22px 0;display:grid}.verification-levels article{padding:var(--panel-padding-compact);background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-soft);flex-direction:column;gap:6px;display:flex}.verification-levels article.active{border-color:#7fb394;box-shadow:0 8px 24px #195d3914}.verification-levels b{font-size:20px}.verification-levels span{color:var(--muted);font-size:13px}.verification-method,.verification-table-wrap{margin-top:var(--section-gap);padding:var(--panel-padding);background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-panel);box-shadow:var(--shadow-soft)}.verification-method h2{margin-top:0}.verification-method p{color:#48564e;line-height:1.8}.verification-table{border:1px solid var(--line);border-radius:var(--radius-card);gap:0;display:grid;overflow:hidden}.verification-row{border-top:1px solid var(--line);grid-template-columns:2.1fr 1.1fr .8fr .8fr 1.1fr 1.1fr;align-items:center;gap:12px;padding:14px 16px;font-size:13px;display:grid}.verification-row:first-child{border-top:0}.verification-row.head{color:#66736b;background:#f4f7f4;font-weight:700}.verification-row>span:first-child{flex-direction:column;gap:3px;display:flex}.verification-row small{color:var(--muted)}@media (max-width:900px){.verification-levels{grid-template-columns:1fr 1fr}.verification-row{grid-template-columns:1.8fr 1fr 1fr}.verification-row span:nth-child(n+4){display:none}.verification-principle{flex-direction:column;align-items:flex-start}}.public-home{gap:72px;display:grid}.home-hero{padding-top:78px;padding-bottom:64px}.home-auth-links{color:#aebbb2;z-index:2;align-items:center;gap:10px;margin-top:24px;font-size:13px;display:flex;position:relative}.home-auth-links a{text-decoration:none}.home-auth-links .home-parent-entry{min-height:42px;color:var(--ink);background:#fff;border-radius:11px;align-items:center;padding:0 15px;font-weight:900;display:inline-flex;box-shadow:0 8px 24px #0000001f}.home-auth-links .home-parent-entry:hover{color:#a8441f;background:#fff3ec}.home-auth-links .home-student-entry{color:#d7dfda;text-underline-offset:4px;padding:10px 4px;font-weight:800;text-decoration:underline}.home-loop .section-heading,.home-modes .section-heading{margin-bottom:24px}.home-loop .section-heading h1,.home-modes .section-heading h1{font-size:38px}.home-step-grid{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(4,1fr);display:grid}.home-step-grid article{border-right:1px solid var(--line);padding:28px 24px}.home-step-grid article:last-child{border-right:0}.home-step-grid h2{margin:12px 0 8px;font-size:20px}.home-step-grid p,.home-mode-grid p,.home-profile p{color:var(--muted);margin:0;line-height:1.75}.home-mode-grid{grid-template-columns:1fr 1fr;gap:18px;display:grid}.home-mode-grid article{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:var(--panel-padding);box-shadow:var(--shadow-soft)}.home-mode-grid h2{margin:12px 0;font-size:26px}.home-mode-grid .primary-button,.home-mode-grid .secondary-button{margin-top:24px}.home-profile{background:var(--soft-green);border-radius:var(--radius-panel);padding:var(--panel-padding);grid-template-columns:1fr auto;align-items:center;gap:36px;display:grid}.home-profile h2{margin:8px 0 10px;font-size:28px}.home-profile p{max-width:760px}.home-profile .eyebrow{margin:0}@media (max-width:900px){.public-home{gap:52px}.home-step-grid{grid-template-columns:1fr 1fr}.home-step-grid article:nth-child(2){border-right:0}.home-step-grid article:nth-child(-n+2){border-bottom:1px solid var(--line)}}@media (max-width:600px){.public-home{gap:44px}.home-hero{padding:42px 24px}.home-hero .hero-actions{display:grid}.home-auth-links{flex-direction:column;align-items:stretch}.home-auth-links .home-parent-entry,.home-auth-links .home-student-entry{justify-content:center}.home-auth-links .home-student-entry{text-align:center}.home-step-grid,.home-mode-grid,.home-profile{grid-template-columns:1fr}.home-step-grid article{border-right:0;border-bottom:1px solid var(--line)}.home-step-grid article:last-child{border-bottom:0}.home-loop .section-heading h1,.home-modes .section-heading h1{font-size:30px}.home-profile{gap:22px;padding:26px}.home-profile .secondary-button{justify-self:start}}.diagnostic-empty-state{padding:var(--panel-padding);background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-panel);box-shadow:var(--shadow-soft);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:22px;margin-top:18px;display:grid}.diagnostic-empty-icon{width:56px;height:56px;color:var(--accent-dark);background:#fff1e9;border-radius:18px;place-items:center;font-size:28px;font-weight:900;display:grid}.diagnostic-empty-state h2{letter-spacing:-.02em;margin:4px 0 8px;font-size:25px}.diagnostic-empty-state p{max-width:760px;color:var(--muted);margin:0;font-size:14px;line-height:1.75}.diagnostic-deliverables{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.diagnostic-deliverables span{color:#315f43;background:#eef5ef;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:800}@media (max-width:760px){.diagnostic-empty-state{grid-template-columns:auto 1fr}.diagnostic-empty-state .primary-button{grid-column:1/-1;width:100%}.diagnostic-empty-state h2{font-size:21px}}.parent-diagnosis-card{padding:var(--panel-padding);background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-panel);box-shadow:var(--shadow-soft);grid-template-columns:minmax(0,1.7fr) minmax(280px,.8fr);gap:22px;margin-top:18px;display:grid}.parent-diagnosis-summary h2{letter-spacing:-.025em;margin:4px 0 18px;font-size:26px}.diagnosis-cards{grid-template-columns:1fr 1fr;gap:12px;display:grid}.diagnosis-cards article{border-radius:var(--radius-soft);background:var(--surface-subtle);border:1px solid #e2e8e2;gap:6px;padding:16px;display:grid}.diagnosis-cards article>span{letter-spacing:.06em;color:#758079;font-size:11px;font-weight:900}.diagnosis-cards article>b{font-size:18px;line-height:1.25}.diagnosis-cards article>p{color:var(--muted);margin:0;font-size:12px;line-height:1.6}.diagnosis-cards .diagnosis-good{background:#eef7ef;border-color:#cfe4d2}.diagnosis-cards .diagnosis-watch{background:#fff4ea;border-color:#f1d3bc}.diagnosis-cards .diagnosis-next{color:#fff;background:#172f25;border-color:#172f25}.diagnosis-cards .diagnosis-next>span,.diagnosis-cards .diagnosis-next>p{color:#c9d7ce}.diagnosis-cards .diagnosis-next a{color:#ff9a6d;margin-top:4px;font-size:12px;font-weight:900}.ability-radar-wrap{border-left:1px solid #edf0ec;align-content:center;justify-items:center;padding:8px 8px 0;display:grid}.ability-radar{aspect-ratio:1;width:min(270px,100%);position:relative}.ability-radar svg{width:100%;height:100%;overflow:visible}.radar-grid{fill:none;stroke:#dce4de;stroke-width:1.2px}.radar-grid.inner{stroke-dasharray:3 4}.ability-radar line{stroke:#e4e9e5;stroke-width:1px}.radar-value{fill:#377b532e;stroke:#377b53;stroke-width:2.2px}.ability-radar circle{fill:#377b53}.radar-label{text-align:center;gap:1px;min-width:54px;display:grid;position:absolute}.radar-label b{font-size:11px}.radar-label span{font-size:16px;font-weight:900}.radar-label-0{top:-2px;left:50%;transform:translate(-50%,-35%)}.radar-label-1{top:50%;right:-3px;transform:translate(38%,-50%)}.radar-label-2{bottom:-2px;left:50%;transform:translate(-50%,35%)}.radar-label-3{top:50%;left:-3px;transform:translate(-38%,-50%)}.ability-radar-wrap>p{color:var(--muted);text-align:center;max-width:260px;margin:6px 0 0;font-size:11px;line-height:1.5}@media (max-width:900px){.parent-diagnosis-card{grid-template-columns:1fr}.ability-radar-wrap{border-top:1px solid #edf0ec;border-left:0;padding-top:20px}}@media (max-width:620px){.parent-diagnosis-card{padding:22px 16px}.diagnosis-cards{grid-template-columns:1fr}.parent-diagnosis-summary h2{font-size:22px}.ability-radar{width:min(240px,80vw)}}.exam-companion{padding:var(--panel-padding);border-radius:var(--radius-panel);box-shadow:var(--shadow-soft);background:linear-gradient(#fff 0%,#f8fafc 100%);border:1px solid #0f172a1f;margin:28px 0 38px}.exam-companion__head{grid-template-columns:minmax(0,1.4fr) minmax(260px,.6fr);align-items:start;gap:22px;display:grid}.exam-companion__head h2{margin:8px 0;font-size:clamp(24px,3vw,36px)}.exam-companion__head p{color:#475569;margin:0;line-height:1.7}.exam-companion__source{background:#fff;border:1px solid #0f172a17;border-radius:16px;flex-direction:column;gap:5px;padding:16px;display:flex}.exam-companion__source span,.exam-companion__source small{color:#64748b;line-height:1.5}.exam-companion__source a{margin-top:5px;font-weight:700}.exam-companion__next{color:#fff;background:#0f172a;border-radius:18px;margin:22px 0;padding:22px}.exam-companion__next>span{letter-spacing:.08em;opacity:.72;font-size:13px;font-weight:800}.exam-companion__next h3{margin:8px 0;font-size:25px}.exam-companion__next p{color:#e2e8f0;margin:0 0 16px;line-height:1.7}.exam-companion__timeline{gap:12px;display:grid}.exam-companion__task{background:#fff;border:1px solid #0f172a14;border-radius:16px;grid-template-columns:38px 1fr;gap:14px;padding:17px;display:grid}.exam-companion__task--past{opacity:.55}.exam-companion__task--current{border-width:2px;border-color:#0f172a}.exam-companion__marker{background:#e2e8f0;border-radius:50%;place-items:center;width:32px;height:32px;font-weight:800;display:grid}.exam-companion__task--current .exam-companion__marker{color:#fff;background:#0f172a}.exam-companion__date{color:#475569;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;font-weight:800;display:flex}.exam-companion__date em{background:#f1f5f9;border-radius:999px;padding:3px 8px;font-size:11px;font-style:normal}.exam-companion__task h3{margin:6px 0;font-size:19px}.exam-companion__task p{color:#64748b;margin:0;line-height:1.65}.exam-companion__task ul{color:#334155;margin:10px 0 0;padding-left:20px;line-height:1.8}.exam-companion__disclaimer{color:#64748b;margin:16px 0 0;font-size:12px}@media (max-width:760px){.exam-companion{border-radius:18px;padding:18px}.exam-companion__head{grid-template-columns:1fr}.exam-companion__next{padding:18px}.exam-companion__task{grid-template-columns:32px 1fr;padding:14px}}.math-input-assistant{gap:10px;width:100%;max-width:620px;margin:14px auto 0;display:grid}.math-answer-preview{background:#f8faf7;border:1px solid #dfe6df;border-radius:14px;justify-content:space-between;align-items:center;gap:18px;min-height:64px;padding:10px 16px;display:flex}.math-answer-preview small{letter-spacing:.08em;color:var(--muted);text-transform:uppercase;font-size:10px;font-weight:900}.math-answer-preview strong{overflow-wrap:anywhere;justify-content:flex-end;align-items:center;min-width:0;font-size:29px;line-height:1.15;display:flex}.math-preview-fraction{text-align:center;vertical-align:middle;grid-template-rows:auto auto;align-items:center;min-width:34px;line-height:1.05;display:inline-grid}.math-preview-fraction>span:first-child{border-bottom:2px solid;padding:0 5px 3px}.math-preview-fraction>span:last-child{padding:3px 5px 0}.math-preview-radical{align-items:flex-start;display:inline-flex}.math-preview-radical .root-sign{font-size:1.2em;line-height:.95}.math-preview-radical .radicand{border-top:2px solid;padding:2px 4px 0 2px}.symbolic-math-keypad{grid-template-columns:repeat(4,minmax(56px,1fr));gap:8px;display:grid}.symbolic-math-keypad button{border:1px solid var(--line);min-height:50px;color:var(--ink);touch-action:manipulation;background:#fff;border-radius:12px;font-size:18px;font-weight:850}.symbolic-math-keypad button:active{background:#f4f7f2;transform:translateY(1px)}.symbolic-math-keypad .key-back{background:#f4f5f2}.symbolic-math-keypad .key-enter{background:var(--accent);border-color:var(--accent);grid-column:span 2;font-size:16px}.symbolic-math-keypad .key-enter:disabled,.symbolic-math-keypad button:disabled{opacity:.35}.symbolic-math-keypad.kind-fraction,.symbolic-math-keypad.kind-radical,.symbolic-math-keypad.kind-pi{grid-template-columns:repeat(3,minmax(62px,1fr))}.math-input-hint{color:#8e4f24;text-align:center;background:#fff6ee;border:1px solid #efc8a8;border-radius:11px;width:100%;max-width:620px;margin:10px auto 0;padding:10px 13px;font-size:12px;font-weight:800}@media (max-width:600px){.math-answer-preview{min-height:56px}.math-answer-preview strong{font-size:25px}.symbolic-math-keypad button{min-height:48px;font-size:17px}}.home-competition-showcase{gap:22px;display:grid}.home-competition-showcase .section-heading{margin-bottom:0}.home-competition-showcase .section-heading p{max-width:760px;line-height:1.7}.home-competition-grid{grid-template-columns:repeat(4,1fr);gap:14px;display:grid}.home-competition-card{min-width:0;min-height:190px;padding:var(--panel-padding-compact);border:1px solid var(--line);border-radius:var(--radius-card);background:var(--panel);box-shadow:var(--shadow-soft);flex-direction:column;gap:9px;transition:all .16s;display:flex}.home-competition-card:hover{box-shadow:var(--shadow);border-color:#aeb9b1;transform:translateY(-2px)}.home-competition-card>strong{letter-spacing:-.02em;font-size:20px}.home-competition-card>span{color:var(--muted);font-size:12px;line-height:1.55}.home-competition-card>em{color:var(--green);margin-top:auto;font-size:12px;font-style:normal;font-weight:850}@media (max-width:980px){.home-competition-grid{grid-template-columns:1fr 1fr}}@media (max-width:560px){.home-competition-grid{grid-template-columns:1fr}.home-competition-card{min-height:0}}.guest-access-note{z-index:2;color:#aebbb2;max-width:680px;margin:16px 0 0;font-size:13px;line-height:1.6;position:relative}@media (max-width:600px){.arithmetic-hero-actions{grid-template-columns:1fr;margin-top:24px;display:grid}.arithmetic-hero-actions .primary-button,.arithmetic-hero-actions .secondary-button{width:100%}.guest-access-note{margin-top:14px;font-size:12px}}@media (max-width:900px){.verification-shell,.legal-page{padding-left:var(--page-gutter-tablet);padding-right:var(--page-gutter-tablet)}}@media (max-width:600px){.verification-shell,.legal-page{padding-left:var(--page-gutter-mobile);padding-right:var(--page-gutter-mobile)}}.home-hero .home-login-primary{min-height:54px;padding-inline:24px;font-size:16px;box-shadow:0 10px 24px #00000030}.home-hero .home-login-primary:focus-visible{outline-offset:3px;outline:3px solid #fff}.competition-heading h2,.home-shell .section-heading h2{letter-spacing:-.025em;font-size:clamp(24px,3vw,35px);line-height:1.18}.home-shell>.hero-card,.arithmetic-hero,.student-hero,.verification-hero{background:linear-gradient(115deg,var(--portal-navy),#164d91 85%)}.home-shell .eyebrow{color:var(--portal-blue)}.home-shell>.hero-card .eyebrow{color:#bad5ff}.home-shell>.hero-card .hero-copy{color:#d8e7ff}.home-shell .primary-button{background:var(--portal-blue);color:#fff}.home-shell .primary-button:hover{background:var(--portal-blue-strong);color:#fff}.home-shell>.hero-card .primary-button{color:var(--portal-blue);background:#fff}.home-shell>.hero-card .primary-button:hover{color:var(--portal-blue);background:#eaf2ff}.home-shell>.hero-card .secondary-button{color:#fff;background:#ffffff17}@media (min-width:761px) and (max-width:900px){.home-shell,.report-shell,.review-shell,.admin-shell,.student-shell,.verification-shell,.exam-shell,.legal-page{padding-left:var(--page-gutter);padding-right:var(--page-gutter)}}@media (max-width:760px){.home-shell,.report-shell,.review-shell,.admin-shell,.student-shell,.verification-shell,.exam-shell,.legal-page{padding-left:var(--page-gutter-mobile);padding-right:var(--page-gutter-mobile)}}.exam-nav-toggle{display:none}.exam-review-shortcuts{flex-wrap:wrap;gap:9px;margin-top:17px;display:flex}.exam-review-shortcuts button{border:1px solid var(--portal-blue);background:var(--portal-blue-soft);min-height:44px;color:var(--portal-blue);border-radius:var(--radius-control);padding:10px 14px;font-size:14px;font-weight:800}.exam-review-shortcuts button:hover{background:#dfeeff}.exam-shell .number-grid button{min-height:42px}.exam-shell .number-grid button.answered{background:var(--portal-blue-soft);color:var(--portal-blue);border-color:#9abce7}.exam-shell .number-grid button.flagged:after{background:#d99416;width:8px;height:8px}.exam-shell .number-grid button:focus-visible,.exam-review-shortcuts button:focus-visible,.exam-nav-toggle:focus-visible{outline:3px solid var(--portal-blue);outline-offset:2px}.exam-shell .exam-progress{background:#e5edf8}.exam-shell .exam-progress span{background:var(--portal-blue)}@media (max-width:900px){.exam-shell .question-nav{border:1px solid var(--portal-border);background:#fff;border-top:0;border-radius:0 0 14px 14px;order:0;min-width:0;margin-bottom:12px;padding:0 16px;display:block}.exam-shell .exam-nav-toggle{text-align:left;width:100%;color:var(--portal-blue);background:0 0;border:0;min-height:46px;padding:13px 0;font-size:14px;font-weight:800;line-height:1.6;display:block}.exam-shell .question-nav .nav-summary,.exam-shell .question-nav .number-grid,.exam-shell .question-nav .legend{display:none}.exam-shell .question-nav.nav-expanded .nav-summary{margin:13px 0 3px;display:flex}.exam-shell .question-nav.nav-expanded .number-grid{grid-template-columns:repeat(8,minmax(0,1fr));gap:8px;padding:13px 0;display:grid}.exam-shell .question-nav.nav-expanded .legend{flex-wrap:wrap;gap:15px;margin:0 0 14px;display:flex}.exam-shell .question-nav.nav-expanded .number-grid button{aspect-ratio:auto;min-height:44px}}@media (max-width:600px){.exam-shell .question-nav{padding:0 12px}.exam-shell .question-nav.nav-expanded .number-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.exam-shell .exam-layout,.exam-shell .question-card{min-height:0}.exam-review-shortcuts button{flex:1}}.site-footer-top{align-items:start}.site-footer-top nav{flex:1;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px 23px;max-width:980px;display:grid}.site-footer-group{gap:12px;min-width:0;display:grid}.site-footer-group>b{color:#fff;font-size:14px}.site-footer-group>div{gap:9px;display:grid}.site-footer-group a{font-size:13px;line-height:1.4}@media (max-width:760px){.site-footer-top nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:27px 18px;margin-top:24px}}