.landing-page.study-site{grid-template-rows:auto minmax(0,1fr) auto;grid-template-columns:minmax(0,1fr);min-width:0;height:100dvh;min-height:0;display:grid;overflow:hidden}.study-site>.public-header{z-index:50;position:relative;top:auto}.skip-link{z-index:1000;color:#172f44;background:#fffdf7;border:2px solid #b18a40;border-radius:4px;padding:10px 16px;position:absolute;top:-100px;left:12px}.skip-link:focus{top:8px}.study-site>.page-shell{overscroll-behavior-y:contain;scrollbar-gutter:stable;width:100%;height:100%;min-height:0;margin:0 auto;padding-top:32px;padding-bottom:32px;overflow-y:auto}.study-site>.public-footer{padding:14px max(24px,calc((100% - var(--content))/2 + 24px));flex-shrink:0;grid-template-columns:auto minmax(0,1fr);min-height:64px;margin:0}.study-site>.public-footer p{margin:0;font-size:12px}.study-site>.public-footer .brand{font-size:18px}.study-site>.public-footer .brand-mark{width:28px;height:28px}.question-nav{background:var(--cream);align-self:start;max-height:100%;position:sticky;top:0}.question-dots button.incorrect{background:#f5e4df;border-color:#c28e7d}.question-dots button.incorrect .answer-check{background:var(--danger)}.question-dots button.correct .answer-check{background:var(--green)}.question-dots .answer-check{background:var(--muted);border-radius:3px;width:18px;height:18px;line-height:18px;top:-6px;bottom:auto;right:-5px}@media (width<=800px){.study-site>.page-shell{padding:22px 18px}.study-site>.public-footer{min-height:60px;padding:10px 18px;gap:8px!important}.study-site>.public-footer p{max-width:190px;font-size:10px}.study-site>.public-footer .brand{font-size:15px}.question-nav{position:static}}@media (width<=600px){.study-site>.public-footer{align-items:center;height:44px;min-height:44px;padding:6px 12px;display:flex}.study-site>.public-footer .footer-brand,.study-site>.public-footer .footer-description{display:none}.study-site>.public-footer p{white-space:nowrap;scrollbar-width:thin;width:100%;max-width:none;font-size:11px;overflow-x:auto}.study-site>.public-footer p br{display:none}.study-site>.page-shell{scroll-padding-bottom:20px}}@media (width<=800px){.practice-site~.assistant-mascot,.practice-site~.assistant-history-launch{display:none}}.assistant-mascot{z-index:55;cursor:grab;touch-action:none;color:#253a4c;background:0 0;border:0;width:68px;padding:0;font-size:12px;font-weight:700;position:fixed;bottom:96px;right:22px}.assistant-mascot[hidden]{display:none}.assistant-mascot svg{width:68px;height:68px;display:block}.assistant-mascot:active{cursor:grabbing}.assistant-mascot span{background:#fff9ed;border:1px solid #d8c9aa;border-radius:12px;padding:2px 8px}.assistant-history-launch{z-index:55;color:#253a4c;cursor:pointer;background:#fffcf5;border:1px solid #d8c9aa;border-radius:20px;padding:7px 12px;font-size:12px;position:fixed;bottom:66px;right:16px}.assistant-panel{z-index:65;color:#1b3041;isolation:isolate;background:#faf8f3;flex-direction:column;min-height:0;font-size:14px;line-height:1.6;display:flex;position:fixed;overflow:hidden;box-shadow:0 14px 54px #172f4433}.assistant-panel *{box-sizing:border-box}.assistant-panel button{cursor:pointer;font:inherit;color:inherit}.assistant-panel button:disabled{cursor:not-allowed;opacity:.55}.assistant-panel button:focus-visible,.assistant-panel textarea:focus-visible,.assistant-panel a:focus-visible{outline-offset:2px;outline:3px solid #b18a40}.assistant-popup{border:1px solid #d8c9aa;border-radius:20px;width:440px;max-width:calc(100vw - 24px);height:640px;max-height:calc(100dvh - 210px);bottom:190px;right:24px}.assistant-sidebar{border:0;border-left:1px solid #ddd5c5;border-radius:0;width:460px;max-width:100vw;height:100dvh;inset:0 0 0 auto}.assistant-header{background:#fffdf7;border-bottom:1px solid #e5dfd1;flex-shrink:0;justify-content:space-between;align-items:center;gap:8px;padding:15px 18px;display:flex}.assistant-header>div:first-child{flex-direction:column;display:flex}.assistant-header strong{font-size:17px}.assistant-header small{color:#647078;font-size:11px}.assistant-tools{gap:2px;display:flex}.assistant-tools button{background:0 0;border:0;border-radius:8px;width:36px;height:36px;font-size:20px}.assistant-tools button:hover{background:#eee9df}.assistant-history{background:#fffdf7;border-bottom:1px solid #e5dfd1;flex-shrink:0}.assistant-history-toggle{text-align:left;background:0 0;border:0;width:100%;padding:10px 18px;display:block;font-weight:700!important}.assistant-history-list{overscroll-behavior:contain;max-height:180px;padding:0 10px 8px;overflow:auto}.assistant-history-list>button{text-align:left;background:0 0;border:0;border-radius:8px;flex-direction:column;align-items:flex-start;gap:2px;width:100%;padding:8px;display:flex}.assistant-history-list>button:hover,.assistant-history-list>button[aria-current=true]{background:#ece6d8}.assistant-history-list span{overflow-wrap:anywhere}.assistant-history-list small{color:#647078;font-size:10px}.assistant-history-list p{color:#647078;margin:8px}.assistant-topic{background:#f1ede4;border-bottom:1px solid #e5dfd1;flex-shrink:0;padding:10px 18px}.assistant-topic>span{color:#68716f;letter-spacing:.08em;font-size:10px}.assistant-topic p{overflow-wrap:anywhere;max-height:54px;margin:2px 0 0;font-size:12px;line-height:1.5;overflow:auto}.assistant-messages{overscroll-behavior:contain;scrollbar-gutter:stable;flex:1;min-height:90px;padding:20px 16px;overflow:auto}.assistant-empty{text-align:center;color:#677078;padding:20px 12px}.assistant-empty strong{color:#263d4c;font-size:18px;display:block}.assistant-empty p{margin:8px 0}.assistant-empty small{font-size:11px}.assistant-turn{flex-direction:column;gap:14px;margin-bottom:20px;display:flex}.assistant-message{overflow-wrap:anywhere;min-width:0;max-width:93%}.assistant-message>small{color:#69747a;margin:0 4px 4px;font-size:10px;display:block}.assistant-message>div{border-radius:14px;padding:11px 14px}.assistant-message.user{text-align:right;align-self:flex-end;max-width:86%}.assistant-message.user>div{text-align:left;white-space:pre-wrap;color:#fff;background:#243e51;border-bottom-right-radius:4px}.assistant-message.model{align-self:flex-start}.assistant-message.model>div{background:#fff;border:1px solid #e5dfd1;border-bottom-left-radius:4px}.assistant-message p{margin:0 0 10px}.assistant-message p:last-child{margin-bottom:0}.assistant-message ul,.assistant-message ol{margin:8px 0;padding-left:22px}.assistant-message h1,.assistant-message h2,.assistant-message h3,.assistant-message h4{margin:12px 0 6px;font-size:16px;line-height:1.5}.assistant-message pre{white-space:pre;background:#f1f3f3;border-radius:6px;max-width:100%;padding:10px;overflow:auto}.assistant-message code{font-size:12px}.assistant-message blockquote{color:#626b70;border-left:3px solid #b99b5f;margin:8px 0;padding-left:10px}.assistant-message a{color:#195e88;text-decoration:underline}.assistant-table{max-width:100%;overflow:auto}.assistant-message table{border-collapse:collapse;font-size:12px}.assistant-message th,.assistant-message td{border:1px solid #d9dedf;min-width:65px;padding:5px 8px}.assistant-message strong{font-weight:750}.assistant-composer{padding:12px 16px;padding-bottom:max(12px,env(safe-area-inset-bottom));background:#fffdf7;border-top:1px solid #e5dfd1;flex-shrink:0;max-height:45%;overflow:auto}.assistant-composer>label{color:#647078;margin-bottom:4px;font-size:11px;display:block}.assistant-composer textarea{resize:none;width:100%;min-height:60px;max-height:110px;font:inherit;color:inherit;background:#fff;border:1px solid #d9d3c5;border-radius:10px;padding:10px 12px;display:block}.assistant-composer [role=alert]{color:#9c382c;margin:0 0 8px;font-size:12px}.assistant-composer>p{margin:0 0 8px;font-size:12px}.assistant-send{justify-content:space-between;align-items:center;gap:8px;margin-top:8px;display:flex}.assistant-send small{color:#677078;font-size:10px}.assistant-send .button{color:#fff;white-space:nowrap;background:#243e51;border-radius:8px;padding:8px 14px;font-size:12px}.assistant-note{color:#6c7475;line-height:1.6;margin:8px 0 0!important;font-size:10px!important}.assistant-feedback{margin-top:7px;font-size:11px}.assistant-feedback summary{cursor:pointer;color:#647078}.assistant-feedback .feedback-form{margin-top:8px}@media (width>=1100px){body.assistant-sidebar-open .landing-page.study-site{width:calc(100% - 460px)}}.assistant-history-drawer{z-index:4;background:#fffdf7;border-right:1px solid #d8c9aa;flex-direction:column;animation:.16s ease-out assistant-drawer-in;display:flex;position:absolute;inset:68px 36px 0 0;box-shadow:12px 0 32px #172f4433}.assistant-history-drawer>header{border-bottom:1px solid #e5dfd1;justify-content:space-between;align-items:center;padding:16px;display:flex}.assistant-history-drawer>header button{background:0 0;border:0;width:36px;height:36px;font-size:24px}.assistant-history-drawer .assistant-history-list{flex:1;min-height:0;max-height:none;padding:10px;overflow:auto}.assistant-history-drawer .assistant-history-list>button{border-bottom:1px solid #eee8dc;border-radius:8px;padding:14px 10px}.assistant-history-drawer .assistant-history-list small{font-size:11px}.assistant-markdown-loading{color:#647078;min-height:40px}@keyframes assistant-drawer-in{0%{opacity:.5;transform:translate(-15px)}to{opacity:1;transform:none}}@media (prefers-reduced-motion:reduce){.assistant-history-drawer{animation:none}}@media (width<=600px){.assistant-popup{border-radius:16px;width:calc(100vw - 20px);height:620px;max-height:calc(100dvh - 128px);bottom:108px;right:10px}.assistant-sidebar{width:100%;max-width:none}.assistant-mascot{bottom:112px;right:12px}.assistant-history-launch{bottom:76px;right:10px}.assistant-header{padding:12px 14px}.assistant-composer{padding:10px 12px}.assistant-history-list{max-height:135px}.assistant-messages{padding:14px 12px}.assistant-composer textarea{font-size:16px}.assistant-popup~*{pointer-events:auto}.assistant-mascot{width:48px;bottom:58px}.assistant-mascot svg{width:48px;height:48px}.assistant-mascot span,.assistant-history-launch{display:none}.assistant-popup{max-height:calc(100dvh - 72px);bottom:58px}.assistant-history-drawer{inset:60px 0 0}}@media (height<=600px){.assistant-popup{max-height:calc(100dvh - 24px);bottom:12px}.assistant-topic p{max-height:36px}.assistant-history-list{max-height:90px}.assistant-composer{max-height:50%}.assistant-composer .assistant-note{display:none}}.trial-unlock-overlay{z-index:150;background:#17232e99;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.trial-unlock-dialog{box-sizing:border-box;border:1px solid var(--line);background:var(--paper);width:min(100%,390px);max-height:85dvh;color:var(--ink);border-radius:10px;padding:30px 24px 24px;position:relative;overflow:auto;box-shadow:0 16px 48px #0002}.trial-unlock-dialog h2{margin:0 26px 12px 0;font-size:21px;line-height:1.4}.trial-unlock-dialog p{color:var(--muted);margin:0 0 22px;font-size:15px;line-height:1.7}.trial-unlock-dialog>.button{white-space:normal;text-align:center;justify-content:center;min-height:44px;display:flex}.trial-unlock-close{width:36px;height:36px;color:var(--ink);background:0 0;border:0;border-radius:5px;padding:0;font-size:24px;position:absolute;top:12px;right:12px}.trial-unlock-dialog button:focus-visible,.trial-unlock-dialog a:focus-visible{outline:3px solid var(--gold-dark);outline-offset:3px}.record-groups{gap:22px;display:grid}.record-group>h2{border-bottom:1px solid var(--line);color:var(--ink);margin:0 0 10px;padding:0 0 8px;font-size:17px}.record-group .record-list{gap:0;display:grid}.question-tools{flex-wrap:wrap;align-items:center;gap:14px;margin-top:14px;display:flex}.issue-form{border:1px solid var(--line);overflow-wrap:anywhere;flex-basis:100%;margin:12px 0;padding:18px}.issue-form label{margin:8px 0;display:block}.issue-form textarea{width:100%;font:inherit;box-sizing:border-box}.submit-overlay{z-index:100;background:#17232e99;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.submit-dialog{background:#f5f0e5;max-width:520px;max-height:80vh;padding:28px;overflow:auto}.notebook-tabs{border-bottom:1px solid var(--line);gap:24px;margin:20px 0;display:flex}.notebook-tabs button{color:var(--ink);background:0 0;border:0;padding:14px 4px}.notebook-tabs .active{border-bottom:3px solid var(--gold);color:var(--gold-dark)}.notebook-filters{flex-wrap:wrap;gap:12px;display:flex}.notebook-filters label{flex:1;min-width:130px;font-size:13px}.notebook-filters select,.notebook-filters input{box-sizing:border-box;width:100%;min-height:38px;display:block}.notebook-filters form{flex:1;align-items:end;gap:8px;display:flex}.notebook-filters select{max-width:260px}.notebook-toolbar{flex-wrap:wrap;align-items:center;gap:14px;margin:20px 0;display:flex}.notebook-list article{border-bottom:1px solid var(--line);grid-template-columns:24px minmax(0,1fr) 150px;gap:14px;padding:20px 0;display:grid}.notebook-list small{color:var(--muted);margin-top:10px;display:block}.row-actions{align-items:center;gap:10px;display:flex}.study-site button:focus-visible,.study-site a:focus-visible,.study-site input:focus-visible,.study-site select:focus-visible{outline:3px solid var(--gold-dark);outline-offset:3px}@media (width<=800px){.notebook-list article{grid-template-columns:24px minmax(0,1fr)}.row-actions{grid-column:2}.notebook-filters select{max-width:none}.public-nav nav{overflow-x:auto}.notebook-toolbar{gap:8px}}.study-site .study-subjects{display:block}.study-site .study-subject{border-bottom:1px solid var(--line);padding:20px 0}.submit-checklist{flex-wrap:wrap;gap:4px;max-height:150px;margin-bottom:16px;display:flex;overflow:auto}.submit-checklist button{border:1px solid var(--line);font-size:12px}.catalog-progress,.topic-progress{border:1px solid var(--line,#dfdace);background:#fffdf8;border-radius:6px;gap:8px;margin:0 0 18px;padding:16px 20px;display:grid}.catalog-progress>div{flex-wrap:wrap;justify-content:space-between;gap:10px;display:flex}.catalog-progress span,.topic-progress span,.catalog-progress small{color:var(--muted);font-size:13px}.catalog-progress progress,.topic-progress progress{accent-color:#b99440;width:100%;height:7px}.topic-progress{background:#f9f4e8}.study-site>.page-shell{max-width:none;padding-left:max(28px,50vw - 840px);padding-right:max(28px,50vw - 840px)}.study-site .public-nav{max-width:1680px}.study-site.home-site>.page-shell{padding:0}.study-site>.public-footer{height:64px;min-height:64px;padding-top:8px;padding-bottom:8px;overflow:hidden}.source-filters{margin:0 0 24px;grid-template-columns:1fr!important;gap:16px!important;display:grid!important}.source-choice{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.source-choice>span{width:100%;color:var(--muted);font-size:12px}.source-choice button{border:1px solid var(--line,#dfdace);color:var(--navy);font:inherit;cursor:pointer;background:0 0;border-radius:6px;padding:10px 16px}.source-choice button[aria-pressed=true]{background:var(--navy);color:#fff;border-color:var(--navy)}.source-sections button[aria-pressed=true]{color:#453619;background:#f4e8c6;border-color:#b99440}.catalog-workspace{grid-template-columns:230px minmax(0,1fr);align-items:start;gap:32px;display:grid}.catalog-topics{border-right:1px solid var(--line,#dfdace);flex-direction:column;gap:6px;padding-right:20px;display:flex}.catalog-topics h2{margin:0 0 12px;font-size:14px}.catalog-topics button{text-align:left;font:inherit;color:var(--navy);cursor:pointer;overflow-wrap:anywhere;background:0 0;border:1px solid #0000;border-radius:6px;flex-direction:column;gap:6px;padding:14px 12px;display:flex}.catalog-topics button[aria-current=true]{background:#f4e8c6;border-color:#dbc789}.catalog-topics button small{color:var(--muted);font-size:12px}.catalog-chapter-heading{justify-content:space-between;align-items:baseline;gap:16px;margin:0 0 16px;display:flex}.catalog-chapter-heading h2{margin:0;font-size:24px}.catalog-chapter-heading p{color:var(--muted);margin:0}.feedback-choice{border:0;min-width:0;margin:0 0 24px;padding:0}.feedback-choice legend{color:var(--muted);margin-bottom:10px;font-size:13px}.feedback-choice>div{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.feedback-choice label{border:1px solid var(--line,#dfdace);cursor:pointer;background:#fff;border-radius:6px;align-items:center;padding:14px;flex-direction:row!important;gap:12px!important;display:flex!important}.feedback-choice label.selected{background:#fffaf0;border-color:#b99440}.feedback-choice input{accent-color:#a88229;flex-shrink:0;height:16px;width:16px!important}.feedback-choice strong{font-size:14px;display:block}.feedback-choice small{color:var(--muted);margin-top:4px;font-size:12px;display:block}.chapter-cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.chapter-card{border:1px solid var(--line,#dfdace);background:#fff;border-radius:6px;flex-direction:column;gap:14px;min-width:0;padding:20px;display:flex}.chapter-card-title{justify-content:space-between;align-items:center;gap:8px;display:flex}.chapter-card-title h3{margin:0;font-size:18px}.chapter-card-title>span{color:#8a681f;font-size:13px}.chapter-card p{color:var(--muted);justify-content:space-between;margin:0;font-size:13px;display:flex}.chapter-card progress{appearance:none;background:#eeeae0;border:0;border-radius:0;width:100%;height:5px}.chapter-card progress::-webkit-progress-bar{background:#eeeae0}.chapter-card progress::-webkit-progress-value{background:#b99440}.chapter-card progress::-moz-progress-bar{background:#b99440}.chapter-card .button{align-self:flex-start;margin-top:auto}.prior-coverage{color:var(--muted);font-size:11px}.catalog-note{color:var(--muted);margin:22px 0;font-size:12px;line-height:1.7}.chapter-pagination{justify-content:center;align-items:center;gap:20px;margin-top:24px;display:flex}.chapter-pagination button{cursor:pointer;background:#fff;border:1px solid #d8d0bd;border-radius:5px;padding:8px 16px}.chapter-pagination button:disabled{opacity:.4}@media (width>=1800px){.chapter-cards{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (width<=1100px){.catalog-workspace{grid-template-columns:200px minmax(0,1fr);gap:20px}.chapter-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.feedback-choice>div{grid-template-columns:1fr}}@media (width<=700px){.study-site>.page-shell{padding:20px 16px}.study-site>.public-footer{height:60px;min-height:60px}.catalog-workspace{display:block}.catalog-topics{border:0;flex-direction:row;margin-bottom:8px;padding:0 0 18px;display:flex;overflow:auto}.catalog-topics h2{display:none}.catalog-topics button{flex-shrink:0;min-width:150px;max-width:220px;padding:10px}.catalog-chapter-heading{display:block}.catalog-chapter-heading h2{margin-bottom:8px;font-size:21px}.chapter-cards{gap:10px}.chapter-card{padding:14px}.chapter-card-title{flex-direction:column;align-items:flex-start}.source-choice button{padding:9px 11px;font-size:12px}}@media (width<=600px){.study-site>.public-footer{height:44px;min-height:44px}}@media (width<=370px){.chapter-cards{grid-template-columns:1fr}}.study-site.practice-site>.page-shell{padding-top:12px;padding-bottom:0}@media (width<=800px){.study-site.practice-site>.page-shell{padding:8px 14px 0}}.catalog-page>.page-heading{margin-bottom:22px;padding-bottom:22px}.catalog-page>.page-heading h1{font-size:32px}@media (width<=700px){.catalog-page>.page-heading{gap:0;margin-bottom:16px;padding-bottom:16px}.catalog-page>.page-heading h1{margin:10px 0;font-size:25px;line-height:1.3}.catalog-page>.page-heading p{margin:0;font-size:13px;line-height:1.5}.catalog-page .source-filters{margin-bottom:16px;gap:10px!important}.catalog-page .source-choice>span{display:none}.catalog-page .source-sections{flex-wrap:nowrap;padding-bottom:4px;overflow:auto}.catalog-page .source-sections button{white-space:nowrap;flex-shrink:0}.catalog-topics{margin-bottom:4px;padding-bottom:10px}.catalog-topics button{gap:3px;padding:9px}.catalog-topics button strong{font-size:13px}.catalog-topics button small{font-size:11px}.catalog-chapter-heading{margin-bottom:12px}.catalog-chapter-heading h2{margin-bottom:4px;font-size:19px}.catalog-chapter-heading p{font-size:12px}.catalog-page .feedback-choice{margin-bottom:14px}.catalog-page .feedback-choice>div{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.catalog-page .feedback-choice label{align-items:flex-start;padding:10px;gap:7px!important}.catalog-page .feedback-choice strong{font-size:12px}.catalog-page .feedback-choice small{font-size:10px}.catalog-page .feedback-choice legend{margin-bottom:6px;font-size:11px}}@media (width>=701px){.catalog-topics{overscroll-behavior:contain;scrollbar-gutter:stable;max-height:52dvh;position:sticky;top:0;overflow-y:auto}}.trial-badge{color:#75603a;white-space:nowrap;background:#eee8da;border-radius:999px;align-items:center;padding:3px 8px;font-size:11px;font-weight:600;line-height:1.4;display:inline-flex}.study-owned button .trial-badge,.source-choice button .trial-badge{margin-left:8px}.trial-access-notice{background:#fffdf7;border:1px solid #dfd2b9;border-radius:6px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;margin:18px 0;padding:12px 16px;font-size:13px;display:flex}.trial-access-notice strong{font-weight:600}.catalog-chapters>.language-switch{margin:0 0 18px}.auth-modal{color:#111a24;width:min(460px,100vw - 32px);max-height:calc(100dvh - 40px);box-shadow:none;background:#fffcf5;border:1px solid #dec990;border-radius:4px;padding:0;overflow:auto}.auth-modal::backdrop{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#0c1527b8}.auth-code-field{gap:7px;display:grid}.auth-code-row{align-items:stretch;gap:8px;display:flex}.auth-code-row input{flex:1;min-width:0}.auth-code-send{color:#78530f;min-height:44px;font:inherit;cursor:pointer;background:#f4ead4;border:1px solid #cbbd9e;border-radius:4px;flex-shrink:0;padding:0 12px}.auth-code-send:disabled{opacity:.55;cursor:default}.auth-code-field p{margin:0}.auth-modal .auth-field-error{color:#9d342a;margin:-10px 0 0}.auth-modal input[aria-invalid=true]{border-color:#9d342a}.auth-modal-inner{padding:40px 32px 24px;position:relative}.modal-close{color:#716448;cursor:pointer;background:0 0;border:0;min-width:44px;min-height:44px;font-size:28px;position:absolute;top:8px;right:8px}.modal-brand{color:#9a6913;font:24px Georgia,serif}.auth-modal h2{margin:22px 0 8px;font-size:28px}.auth-modal p{color:#62655f;font-size:14px}.auth-modal form{gap:18px;margin-top:25px;display:grid}.auth-modal label{gap:7px;font-size:14px;font-weight:650;display:grid}.auth-modal input{width:100%;font:inherit;background:#fff;border:1px solid #cbbd9e;border-radius:4px;padding:12px}.auth-modal input:focus-visible{outline-offset:2px;outline:2px solid #9a6913}.auth-modal .modal-consent{align-items:start;gap:9px;font-weight:400;display:flex}.modal-consent input{width:18px;height:18px}.modal-switch{text-align:center;margin-top:24px}.modal-switch a{color:#805510;font-weight:700}@media (width<=600px){.auth-modal-inner{padding:35px 22px 22px}.public-header .login-link{align-items:center;min-height:44px;display:inline-flex}.public-nav{gap:10px}.public-actions{gap:8px}.public-brand{font-size:18px}.public-actions .button.small{padding:8px 10px}}.welcome-page{background:var(--landing-paper);color:var(--landing-ink)}.welcome-coverage,.welcome-method{max-width:1320px;margin:auto;padding:56px 32px}.welcome-section-heading h2,.welcome-method h2{margin:12px 0 16px;font-size:32px}.welcome-section-heading>p:last-child{color:#59636a;line-height:1.7}.welcome-state-grid{grid-template-columns:1fr 1fr;gap:32px;margin-top:28px;display:grid}.welcome-state-grid article{border-top:3px solid var(--landing-gold);min-width:0;padding:24px 0}.welcome-state-grid h3{margin:12px 0 20px;font-size:28px}.state-subjects{margin:0;padding:0;list-style:none}.state-subjects li{border-bottom:1px solid #ded6c7}.state-subjects a{min-height:60px;color:var(--landing-ink);justify-content:space-between;align-items:center;gap:16px;padding:12px 4px;font-size:18px;font-weight:650;line-height:1.5;display:flex}.state-subjects a:hover{color:var(--landing-gold-dark)}.welcome-method{padding-top:20px}.welcome-method>div{grid-template-columns:repeat(3,1fr);gap:28px;margin-top:30px;display:grid}.welcome-method article{border-top:1px solid #d5cbb9;padding-top:20px}.welcome-method article>span{color:#947032;font-size:14px}.welcome-method h3{margin:12px 0;font-size:20px}.welcome-method p{color:#59636a;line-height:1.8}.welcome-page .hero-content h1{text-wrap:balance;max-width:710px;font-size:56px;line-height:1.25}.welcome-page .carousel-dots button{background:padding-box content-box;border-block:14px solid #0000;border-radius:0;width:30px;height:32px}.welcome-page .carousel-dots button.active{background-color:var(--landing-gold)}.welcome-page .carousel-dots button:not(.active){background-color:#fff6}@media (width<=720px){.welcome-coverage,.welcome-method{padding:32px 20px}.welcome-state-grid,.welcome-method>div{grid-template-columns:1fr;gap:22px}.welcome-section-heading h2,.welcome-method h2{font-size:26px}.welcome-page .hero-content h1{font-size:36px;line-height:1.3}.welcome-page .hero-content{padding:56px 24px 120px}.welcome-page .hero-carousel{height:580px;min-height:580px}.welcome-page .hero-shade{background:linear-gradient(90deg,#0c1219e8,#0c121999)}.welcome-page .hero-actions{flex-wrap:wrap}}@media (prefers-reduced-motion:reduce){.hero-image img{animation:none}}.welcome-page .carousel-dots button{width:32px;height:44px;padding:0;position:relative;background:0 0!important}.welcome-page .carousel-dots button:after{content:"";background:#fff7;height:4px;position:absolute;top:20px;left:0;right:0}.welcome-page .carousel-dots button.active:after{background:#d2a32b}.welcome-coverage{position:relative}.welcome-rail-actions{gap:8px;margin-top:18px;display:flex}.welcome-rail-actions button{color:#183148;cursor:pointer;background:#fffaf0;border:1px solid #d8c9aa;border-radius:50%;width:42px;height:42px}.welcome-product-rail{scroll-snap-type:x mandatory;scrollbar-width:thin;gap:20px;padding:8px 2px 18px;display:flex;overflow-x:auto}.welcome-product{scroll-snap-align:start;min-width:0;color:var(--landing-ink);background:#fffdf8;border:1px solid #dfd6c3;border-radius:16px;flex:0 0 clamp(260px,29vw,340px);text-decoration:none;overflow:hidden;box-shadow:0 10px 24px #17273510}.welcome-product:hover{border-color:var(--landing-gold);transform:translateY(-2px)}.welcome-product img{aspect-ratio:3/2;object-fit:cover;width:100%;display:block}.welcome-product>div{padding:18px}.welcome-product h3{margin:8px 0;font-size:20px;line-height:1.35}.welcome-product p{color:#58636c;-webkit-line-clamp:2;-webkit-box-orient:vertical;min-height:43px;font-size:14px;line-height:1.55;display:-webkit-box;overflow:hidden}.welcome-product-link{color:#856221;margin-top:4px;font-weight:700;display:inline-block}.welcome-method>div{grid-template-columns:repeat(4,minmax(0,1fr))}.study-center-tabs{scrollbar-width:thin;border-bottom:1px solid var(--line);gap:8px;margin:28px 0 20px;display:flex;overflow-x:auto}.study-center-tabs button{border:0;color:var(--ink);font:inherit;cursor:pointer;background:0 0;border-bottom:3px solid #0000;flex:none;min-height:48px;padding:13px 18px;font-weight:600}.study-center-tabs button[aria-current=page]{border-color:var(--gold);color:var(--gold-dark)}.study-center-tabs button:focus-visible,.welcome-rail-actions button:focus-visible,.welcome-product:focus-visible{outline-offset:2px;outline:3px solid #96703a}@media (width<=900px){.welcome-method>div{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=600px){.welcome-coverage{padding-right:0}.welcome-product-rail{padding-right:20px}.welcome-product{flex-basis:min(82vw,320px)}.welcome-method>div{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.welcome-method article{padding-top:12px}.welcome-method h3{font-size:17px}.welcome-method p{font-size:13px;line-height:1.5}.study-center-tabs button{padding:11px 13px}}.study-owned{margin:28px 0 18px}.study-owned h2{margin:0 0 14px;font-size:1.22rem}.study-owned>div{flex-wrap:wrap;gap:9px;display:flex}.study-owned button{color:#24384b;cursor:pointer;background:#fffdf7;border:1px solid #d9c9ab;border-radius:8px;min-height:44px;padding:9px 15px}.study-owned button[aria-pressed=true]{color:#fff;background:#24384b}.study-owned button:focus-visible{outline-offset:2px;outline:3px solid #96703a}:root{--ink:#111a24;--navy:#172737;--gold:#c99a2e;--gold-dark:#966d16;--paper:#fffcf5;--cream:#f5f0e5;--line:#ded5c3;--muted:#697078;--green:#35694f;--danger:#a63537;--radius:4px;--content:1240px;--font:Inter,"Noto Sans SC","PingFang SC",system-ui,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{min-width:320px;font-family:var(--font);color:var(--ink);background:var(--cream);font-synthesis:none;margin:0;line-height:1.65}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}h1,h2,h3,p{margin-top:0}h1,h2,h3{letter-spacing:-.02em;line-height:1.3}h1{font-size:38px;font-weight:600}h2{font-size:27px;font-weight:600}h3{font-size:20px;font-weight:600}p{color:var(--muted)}button:disabled{opacity:.5;cursor:not-allowed}:focus-visible{outline:2px solid var(--gold);outline-offset:4px}.brand{white-space:nowrap;align-items:center;gap:10px;font-family:Georgia,Times New Roman,serif;font-size:23px;display:flex}.brand-mark{width:34px;height:34px;color:var(--gold);border:1px solid var(--gold);background:0 0;border-radius:50%;place-items:center;display:inline-grid}.button{border:1px solid var(--gold);border-radius:var(--radius);background:var(--gold);color:var(--ink);min-height:44px;box-shadow:none;cursor:pointer;justify-content:center;align-items:center;gap:8px;padding:12px 22px;font-weight:600;display:inline-flex}.button:hover{background:#b78a24;border-color:#b78a24}.button.secondary{color:var(--gold-dark);background:0 0;border-color:#c9b178}.button.secondary:hover{background:#eee5d3}.button.small{min-height:36px;padding:8px 14px;font-size:13px}.button.full{width:100%}.text-button{color:var(--muted);background:0 0;border:0;padding:8px}.eyebrow,.gold-eyebrow{text-transform:uppercase;letter-spacing:.15em;color:var(--gold-dark);margin-bottom:14px;font-size:11px;font-weight:600;display:inline-block}.locale-toggle{color:inherit;white-space:nowrap;border-radius:var(--radius);background:0 0;border:1px solid #b89b6044;padding:6px 9px;font-size:12px}.page-shell{max-width:var(--content);min-height:70vh;margin:auto;padding:56px 24px 80px}.page-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:36px;padding-bottom:28px;display:flex}.page-heading h1{margin-bottom:12px}.page-heading p{max-width:650px;margin:0;font-size:15px}.section-title{justify-content:space-between;align-items:center;gap:20px;margin:42px 0 22px;display:flex}.section-title h2{margin:0}.loading,.empty{text-align:center;border-block:1px solid var(--line);padding:50px 24px}.full-page{place-content:center;min-height:65vh;display:grid}.alert{border:1px solid var(--line);background:var(--paper);margin:18px 0;padding:15px 20px}.alert.error{color:var(--danger);border-color:#c98787}.alert p{color:inherit}label,.field{flex-direction:column;gap:9px;font-size:14px;font-weight:500;display:flex}input,select{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);width:100%;min-width:0;color:var(--ink);padding:12px}input:focus,select:focus{border-color:var(--gold);outline:1px solid var(--gold)}.account-menu{position:relative}.account-menu summary{cursor:pointer;text-overflow:ellipsis;white-space:nowrap;max-width:190px;font-size:13px;list-style:none;overflow:hidden}.account-menu summary:after{content:" ▾";color:var(--gold)}.account-options{background:var(--navy);z-index:60;border:1px solid #816b3e;min-width:170px;padding:8px;display:grid;position:absolute;top:38px;right:0}.account-options a,.account-options button{text-align:left;color:#f5f0e5;background:0 0;border:0;padding:10px 12px;font-size:14px}.account-options a:hover,.account-options button:hover{background:#253748}.public-header nav a.active{color:var(--gold);text-underline-offset:10px;text-decoration:underline}.landing-page{--landing-ink:#111a24;--landing-navy:#172737;--landing-gold:#c99a2e;--landing-gold-dark:#9a6913;--landing-cream:#f5f0e5;--landing-paper:#fffcf5;background:var(--landing-cream);color:var(--landing-ink);min-height:100vh}.public-header{color:#fff;z-index:40;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#111a24f7;border-bottom:1px solid #c99a2e3b;height:78px;position:sticky;top:0}.public-nav{align-items:center;gap:54px;max-width:1240px;height:100%;margin:auto;padding:0 24px;display:flex}.public-brand{letter-spacing:.01em;font-family:Georgia,Times New Roman,serif;font-size:23px;font-weight:600}.public-brand .brand-mark,.footer-brand .brand-mark{border:1px solid var(--landing-gold);color:var(--landing-gold);box-shadow:none;background:0 0;border-radius:50%;font-family:Georgia,serif}.public-header nav{align-items:center;gap:28px;display:flex}.public-header nav a{color:#d7d4ca;font-size:14px;transition:all .2s}.public-header nav a:hover{color:var(--landing-gold)}.public-actions{align-items:center;gap:16px;margin-left:auto;display:flex}.login-link{color:#eee9dc;font-size:14px;font-weight:650}.landing-page .button.gold{background:var(--landing-gold);color:#171d23;box-shadow:none;border:1px solid var(--landing-gold)}.landing-page .button.gold:hover{background:#ddb64d}.landing-page .button.ghost{box-shadow:none;color:#fff;background:#111a2459;border:1px solid #ffffff7a}.landing-page .button.ghost:hover{background:#ffffff1a}.hero-carousel{background:var(--landing-ink);color:#fff;height:min(670px,100vh - 78px);min-height:570px;position:relative;overflow:hidden}.hero-image,.hero-image img,.hero-shade{width:100%;height:100%;position:absolute;inset:0}.hero-image img{object-fit:cover;object-position:center;animation:.7s both heroReveal}.hero-shade{background:linear-gradient(90deg,#0c1219f7 0%,#0c1219e0 34%,#0c121952 67%,#0c121929 100%)}.hero-content{z-index:2;flex-direction:column;justify-content:center;align-items:flex-start;max-width:1240px;height:100%;margin:auto;padding:112px 24px 100px;display:flex;position:relative}.hero-content>*{max-width:640px}.hero-eyebrow,.gold-eyebrow{color:var(--landing-gold);letter-spacing:.2em;text-transform:uppercase;font-size:11px;font-weight:800}.hero-content h1{letter-spacing:-.035em;margin:18px 0 22px;font-family:Georgia,Times New Roman,serif;font-size:clamp(48px,5.4vw,78px);font-weight:500;line-height:1.03}.hero-content p{color:#e0ded7;max-width:590px;font-size:18px;line-height:1.75}.hero-actions{gap:12px;margin-top:22px;display:flex}.carousel-controls{z-index:3;align-items:center;gap:16px;display:flex;position:absolute;bottom:28px;left:50%;transform:translate(-50%)}.carousel-controls>button{color:#fff;cursor:pointer;background:#111a2473;border:1px solid #ffffff57;border-radius:50%;width:44px;height:44px}.carousel-dots{gap:9px;display:flex}.carousel-dots button{cursor:pointer;background:#ffffff59;border:0;border-radius:4px;width:26px;height:4px;padding:0}.carousel-dots button.active{background:var(--landing-gold)}.hero-empty,.landing-error,.landing-loading{background:var(--landing-ink);color:#fff;text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:14px;min-height:570px;padding:40px;display:flex}.metrics-band{background:var(--landing-paper);border-bottom:1px solid #e4dccb;grid-template-columns:repeat(3,minmax(150px,220px)) 1fr;align-items:center;gap:20px;padding:30px max(24px,50vw - 596px);display:grid}.metrics-band div{border-right:1px solid #dfd5c0;align-items:baseline;gap:10px;display:flex}.metrics-band strong{color:var(--landing-gold-dark);font-family:Georgia,serif;font-size:29px}.metrics-band span{color:#62655f;font-size:13px}.metrics-band p{color:#6b716c;justify-self:end;margin:0;font-size:12px}.live-dot{background:#3f745e;border-radius:50%;width:7px;height:7px;margin-right:7px;display:inline-block}.landing-section{max-width:1240px;margin:auto;padding:108px 24px}.editorial-heading{justify-content:space-between;align-items:end;gap:40px;margin-bottom:42px;display:flex}.editorial-heading h2,.landing-cta h2{letter-spacing:-.03em;margin:10px 0 0;font-family:Georgia,Times New Roman,serif;font-size:clamp(34px,4vw,52px);font-weight:500}.editorial-heading>p{color:#686b65;max-width:490px;margin:0;line-height:1.8}.public-bank-grid{grid-template-columns:1fr 1fr;gap:24px;display:grid}.public-bank-card{background:var(--landing-paper);min-height:370px;box-shadow:none;border:1px solid #dfd5c0;grid-template-columns:150px 1fr;display:grid;overflow:hidden}.bank-book{color:#fff;border-left:5px solid var(--landing-gold);box-shadow:none;background:linear-gradient(145deg,#172737,#0f1821);flex-direction:column;margin:30px 0 30px 28px;padding:22px 18px;display:flex}.bank-book small{letter-spacing:.15em;color:#d5b660;font-size:8px}.bank-book strong{color:var(--landing-gold);margin-top:auto;font-family:Georgia,serif;font-size:40px}.bank-book span{border-top:1px solid #c99a2e73;padding-top:12px;font-family:Georgia,serif;font-size:18px;line-height:1.25}.bank-copy{flex-direction:column;padding:34px 30px;display:flex}.bank-copy h3{margin:9px 0 13px;font-family:Georgia,serif;font-size:25px;font-weight:500}.bank-copy>p{color:#696b66;font-size:14px;line-height:1.7}.public-category-list{flex-wrap:wrap;gap:6px;margin:8px 0 20px;display:flex}.public-category-list span{color:#64645e;background:#faf6ed;border:1px solid #ddd3bf;padding:5px 7px;font-size:11px}.public-category-list b{color:var(--landing-gold-dark);margin-left:5px}.public-bank-meta{color:#6d6b63;border-top:1px solid #e8e0d1;justify-content:space-between;align-items:center;gap:12px;margin-top:auto;padding-top:16px;font-size:12px;display:flex}.public-bank-meta a{color:var(--landing-gold-dark);font-weight:800}.method-section{background:var(--landing-ink);color:#fff}.editorial-heading.inverse>p{color:#c9c7c1}.method-grid{background:#c99a2e4d;border:1px solid #c99a2e4d;grid-template-columns:repeat(3,1fr);gap:1px;display:grid}.method-grid article{background:var(--landing-navy);min-height:270px;padding:38px;position:relative}.method-grid article>span{color:#c99a2e38;font:italic 42px Georgia,serif;position:absolute;top:25px;right:28px}.method-grid small{color:var(--landing-gold);letter-spacing:.16em;font-size:9px}.method-grid h3{margin:42px 0 16px;font:500 25px Georgia,serif}.method-grid p{color:#cbd0cf;font-size:14px;line-height:1.75}.process-section{padding-top:95px;padding-bottom:95px}.process-grid{grid-template-columns:repeat(3,1fr);gap:24px;display:grid}.process-grid article{border-top:1px solid var(--landing-gold);grid-template-columns:48px 1fr;gap:14px;padding:25px 10px 0;display:grid}.process-grid article>b{color:var(--landing-gold);font:italic 30px Georgia,serif}.process-grid h3{margin:3px 0 10px;font:500 21px Georgia,serif}.process-grid p{color:#666a65;font-size:14px;line-height:1.7}.landing-cta{color:#fff;text-align:center;background:linear-gradient(120deg,#172737,#111a24);border-top:1px solid #c99a2e47;padding:90px 24px}.landing-cta p{color:#cbd0cf;max-width:700px;margin:18px auto 28px;line-height:1.75}.landing-cta>div{justify-content:center;gap:12px;display:flex}.public-footer{color:#aeb4b4;text-align:left;background:#0c131b;border-top:0;grid-template-columns:1fr 1fr 1fr;align-items:center;padding:40px max(24px,50vw - 596px);display:grid}.footer-brand{color:#fff;font-family:Georgia,serif;font-size:20px}.public-footer p{margin:8px 0 0;font-size:12px}.public-footer>p{text-align:center;margin:0}.public-footer>div:last-child{justify-self:end;gap:20px;font-size:12px;display:flex}@keyframes heroReveal{0%{opacity:.6;transform:scale(1.015)}to{opacity:1;transform:scale(1)}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.hero-image img{animation:none}.button{transition:none}}@media (width<=900px){.public-header nav{display:none}.hero-carousel{height:650px}.hero-shade{background:linear-gradient(90deg,#0c1219f5,#0c1219a8)}.metrics-band{grid-template-columns:repeat(3,1fr)}.metrics-band p{grid-column:1/-1;justify-self:start}.public-bank-grid{grid-template-columns:1fr}.public-bank-card{min-height:340px}.method-grid,.process-grid{grid-template-columns:1fr}.editorial-heading{flex-direction:column;align-items:flex-start}.method-grid article{min-height:auto}.public-footer{text-align:center;grid-template-columns:1fr;gap:20px}.public-footer>p{text-align:center}.public-footer>div:last-child{justify-self:center}}@media (width<=600px){.public-header{height:68px}.public-nav{padding:0 16px}.public-brand{font-size:20px}.public-actions{gap:10px}.login-link{display:none}.hero-carousel{height:650px;min-height:650px}.hero-image img{object-position:66% center}.hero-shade{background:linear-gradient(90deg,#0c1219fa 0%,#0c1219d1 58%,#0c121959 100%)}.hero-content{justify-content:flex-end;padding:70px 20px 100px}.hero-content h1{max-width:430px;font-size:43px}.hero-content p{font-size:15px;line-height:1.65}.hero-actions{flex-wrap:wrap}.hero-actions .button{width:100%}.metrics-band{grid-template-columns:1fr;padding:20px}.metrics-band div{border-bottom:1px solid #e4dccb;border-right:0;padding-bottom:12px}.landing-section{padding:75px 16px}.editorial-heading h2,.landing-cta h2{font-size:36px}.public-bank-card{grid-template-columns:100px 1fr}.bank-book{margin:22px 0 22px 16px;padding:16px 10px}.bank-book strong{font-size:32px}.bank-book span{font-size:14px}.bank-copy{padding:25px 18px}.bank-copy h3{font-size:21px}.public-bank-meta{flex-direction:column;align-items:flex-start}.method-grid article{padding:30px 25px}.process-grid{gap:36px}.landing-cta{padding:70px 18px}.landing-cta>div{flex-direction:column}.landing-cta .button{width:100%}}.admin-link{color:#8a5b0d;background:#fffaf0;border:1px solid #c99a2e;border-radius:4px;justify-content:center;align-items:center;min-height:38px;padding:7px 13px;font-size:13px;font-weight:800;display:inline-flex}.public-header .admin-link{color:#e9ca70;background:#c99a2e14}.admin-link:hover{background:#f7edcf}@media (width<=600px){.public-header .admin-link{padding:7px 10px}}.recommended-study{border-block:1px solid var(--gold);justify-content:space-between;align-items:center;gap:24px;margin-bottom:36px;padding:28px 0;display:flex}.recommended-study h2{margin-bottom:8px}.recommended-study p{max-width:650px;margin:0}.study-subjects{border-top:1px solid var(--line);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.study-subject{border-bottom:1px solid var(--line);padding:28px 28px 28px 0}.study-subject:nth-child(2n){border-left:1px solid var(--line);padding-left:28px}.study-subject a{color:var(--gold-dark)}.study-subject p{font-size:14px}.practice-mode-grid{border-block:1px solid var(--line);grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin:24px 0 40px;display:grid}.practice-mode-card{border-right:1px solid var(--line);padding:25px}.practice-mode-card:last-child{border:0}.practice-mode-card h3{margin:5px 0 12px}.practice-mode-card p{min-height:72px;font-size:14px}.practice-mode-card b{color:var(--gold-dark);font-size:13px}.practice-mode-card:hover{background:var(--paper)}.record-list{border-top:1px solid var(--line)}.record-row{border-bottom:1px solid var(--line);grid-template-columns:minmax(0,1fr) 150px auto;align-items:center;gap:25px;padding:22px 0;display:grid}.record-row h3{margin-bottom:6px;font-size:18px}.record-row p{margin:0;font-size:13px}.record-status{color:var(--muted);font-size:14px}.record-status strong{color:var(--ink);font-size:20px;font-weight:500;display:block}.status-tabs{border-bottom:1px solid var(--line);gap:24px;margin:26px 0;display:flex}.status-tabs button{color:var(--muted);background:0 0;border:0;border-bottom:2px solid #0000;padding:12px 0}.status-tabs button.active{border-color:var(--gold);color:var(--gold-dark)}.language-switch{border:1px solid var(--line);align-self:flex-start;gap:0;width:max-content;max-width:100%;display:flex}.language-switch button{color:var(--muted);background:0 0;border:0;padding:8px 13px;font-size:13px}.language-switch button.active{background:var(--navy);color:var(--paper)}.practice-top{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:24px;margin-bottom:28px;padding-bottom:24px;display:flex}.practice-top h2{margin:0;font-size:27px}.practice-top .eyebrow{letter-spacing:.03em;margin-bottom:10px}.question-layout{grid-template-columns:minmax(0,1fr) 240px;gap:44px;display:grid}.question-card{border-right:1px solid var(--line);min-width:0;padding:0 35px 0 0}.question-meta{color:var(--gold-dark);margin-bottom:18px;font-size:12px}.question-card h1{font-size:24px;font-weight:500}.question-text .text-en,.question-text .text-zh{line-height:1.7}.question-text .text-en+.text-zh{color:var(--muted);margin-top:10px;font-size:.9em}.options{gap:12px;margin-top:28px;display:grid}.options button{text-align:left;border:1px solid var(--line);border-radius:var(--radius);color:var(--ink);background:0 0;grid-template-columns:30px minmax(0,1fr) 18px;align-items:start;gap:16px;padding:18px;display:grid}.options button.selected{border-color:var(--gold);background:#eee5cf}.options button b{color:var(--gold-dark);font-weight:500}.options button:disabled{opacity:1;cursor:default}.options .text-en{font-size:16px}.options .text-zh{font-size:15px}.confirmation-note{margin:18px 0;font-size:13px}.question-nav h3{font-size:18px}.question-dots{grid-template-columns:repeat(5,1fr);gap:10px;display:grid}.question-dots button{border:1px solid var(--line);height:36px;color:var(--ink);background:0 0;font-size:13px;position:relative}.question-dots button.current{border:2px solid var(--gold)}.question-dots button.answered{background:#e7ece3}.answer-check{background:var(--green);color:#fff;border-radius:50%;width:16px;height:16px;font-size:10px;position:absolute;bottom:-5px;right:-4px}.question-nav p{margin-top:20px;font-size:12px}.practice-actions{flex-wrap:wrap;gap:14px;margin-top:28px;display:flex}.feedback-panel{border-top:2px solid var(--gold);margin-top:32px;padding:24px 0}.feedback-panel h3{font-size:19px}.feedback-panel p{white-space:pre-line}.feedback-correct{color:var(--green)}.feedback-incorrect{color:var(--danger)}.result-summary{border-block:1px solid var(--line);gap:45px;margin-bottom:35px;padding:30px 0;display:flex}.result-number{min-width:150px;color:var(--gold-dark);font-size:70px;font-weight:300;line-height:1.1}.result-number small{margin-top:12px;font-size:14px;display:block}.stat-line{gap:28px;margin:20px 0;display:flex}.stat-line b{font-size:22px;font-weight:500}.review-list details{border-top:1px solid var(--line)}.review-list details:last-child{border-bottom:1px solid var(--line)}.review-list summary{cursor:pointer;grid-template-columns:65px 25px 1fr;gap:12px;padding:20px 0;list-style:none;display:grid}.status{font-size:12px}.status.good{color:var(--green)}.status.bad{color:var(--danger)}.review-body{padding:10px 0 30px 100px}.review-body h3{font-size:20px}.explanation{border-left:2px solid var(--gold);background:var(--paper);margin:22px 0;padding:15px 20px}.explanation p{white-space:pre-line;margin:8px 0 0}.learning-grid{grid-template-columns:1fr 1fr;gap:22px;margin:22px 0;display:grid}.learning-grid .wide{grid-column:1/-1}.learning-grid span{color:var(--gold-dark);font-size:12px}.learning-grid p{font-size:14px}.option-review article{border-bottom:1px solid var(--line);grid-template-columns:30px 1fr;gap:15px;padding:16px 0;display:grid}.option-review .correct-option{border-left:2px solid var(--green);padding-left:15px}.option-review small{color:var(--muted);margin-top:10px;display:block}.wrong-filters{gap:24px;margin-bottom:28px;display:flex}.wrong-filters label{flex:1}.wrong-card{border-top:1px solid var(--line);padding:26px 0}.wrong-card>.question-text{margin:10px 0 25px}.wrong-actions{flex-wrap:wrap;gap:15px;display:flex}.result-number strong{font-weight:300;display:block}.question-origin-note{border-top:1px solid var(--line);color:var(--muted);overflow-wrap:anywhere;margin:16px 0;padding-top:12px;font-size:13px}.question-origin-note b{font-weight:500}.question-origin-note p{margin:6px 0;line-height:1.6}@media (width<=1050px){.public-nav{gap:20px!important}.public-header nav{gap:16px!important}.public-actions{gap:10px!important}.account-menu summary{max-width:125px}.public-brand{font-size:20px!important}.question-layout{grid-template-columns:minmax(0,1fr) 200px;gap:26px}}@media (width<=800px){.public-header{min-height:70px;height:auto!important}.public-nav{flex-wrap:wrap;padding:18px 20px 12px!important}.public-header nav{border-top:1px solid #ffffff18;flex-basis:100%;order:3;justify-content:center;padding-top:10px;display:flex!important}.public-header nav a{white-space:nowrap;font-size:12px!important}.public-actions{margin-left:auto}.public-actions .button{font-size:12px;padding:7px 11px!important}.account-menu summary{max-width:155px;font-size:12px}.locale-toggle{padding:5px;font-size:11px}.page-shell{padding:34px 20px 60px}.page-heading{flex-direction:column;align-items:flex-start;gap:20px}h1{font-size:30px}h2{font-size:24px}.recommended-study{flex-direction:column;align-items:flex-start}.practice-mode-grid{grid-template-columns:1fr 1fr}.practice-mode-card:nth-child(2){border-right:0}.practice-mode-card:nth-child(-n+2){border-bottom:1px solid var(--line)}.record-row{grid-template-columns:minmax(0,1fr) auto;gap:14px}.record-status{grid-column:1}.record-row>.button{grid-area:1/2/3}.question-layout{grid-template-columns:1fr}.question-card{border:0;padding:0}.question-nav{border-top:1px solid var(--line);padding-top:24px}.question-dots{grid-template-columns:repeat(10,minmax(0,1fr))}.practice-top{flex-direction:column;align-items:flex-start}.question-card h1{font-size:21px}.section-title{flex-wrap:wrap}.result-summary{gap:25px}.review-body{padding:8px 0 24px}.wrong-filters{flex-direction:column}.public-footer{gap:20px!important}}@media (width<=440px){.public-brand{font-size:18px!important}.brand-mark{width:27px;height:27px}.public-actions{gap:9px!important}.public-nav{padding-inline:14px!important}.account-menu summary{max-width:120px}.public-header nav{gap:20px!important}.page-shell{padding-inline:18px}.study-subjects{grid-template-columns:1fr}.study-subject,.study-subject:nth-child(2n){border-left:0;padding:22px 0}.practice-mode-card{padding:20px 14px}.practice-mode-card h3{font-size:19px}.practice-mode-card p{min-height:90px;font-size:13px}.question-dots{grid-template-columns:repeat(5,1fr)}.options button{grid-template-columns:22px 1fr 15px;gap:10px;padding:14px}.result-summary{flex-direction:column}.result-number{font-size:56px}.learning-grid{grid-template-columns:1fr}.learning-grid .wide{grid-column:auto}.record-row{grid-template-columns:1fr}.record-status{grid-column:auto}.record-row>.button{grid-area:auto;justify-self:start}.review-list summary{grid-template-columns:55px 22px 1fr;font-size:14px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}@media (width<=800px){.study-site .practice-mode-grid{grid-template-columns:1fr}.study-site .practice-mode-card{border-right:0;border-bottom:1px solid var(--line);padding:22px 0}.study-site .practice-mode-card:last-child{border-bottom:0}.study-site .practice-mode-card p{min-height:0}}.public-nav,.public-header nav,.public-actions{min-width:0}.cart-nav-link{white-space:nowrap;font-size:13px}@media (width<=800px){.public-header nav{justify-content:flex-start;max-width:100%;overflow-x:auto}.public-actions{flex-wrap:wrap}.public-nav{max-width:100%}.study-site>.page-shell{min-width:0}}html[data-site=nailai]{--ink:#35252e;--navy:#553342;--gold:#a84e6c;--gold-dark:#883d58;--paper:#fffaf8;--cream:#f5ebe9;--line:#e2cdcf;--muted:#796a73;--green:#36715c;--danger:#a43f4a;--radius:8px;--landing-ink:#35252e;--landing-gold:#bc6987;--landing-gold-dark:#883d58;--landing-paper:#fffaf8;--landing-cream:#f5ebe9}html[data-site=nailai] .landing-page{--landing-ink:#35252e;--landing-gold:#bc6987;--landing-gold-dark:#883d58;--landing-paper:#fffaf8;--landing-cream:#f5ebe9}html[data-site=nailai] body{color:#35252e;background:#fffaf8}html[data-site=nailai] .public-header{color:#553342;background:#fffaf8;border-color:#e2cdcf}html[data-site=nailai] .public-header nav{border-color:#e2cdcf}html[data-site=nailai] .public-header nav a,html[data-site=nailai] .public-header .login-link{color:#553342}html[data-site=nailai] .public-header .admin-link{color:#883d58;background:#fff0f3;border-color:#dfbbc8}html[data-site=nailai] .public-footer{color:#fffaf8;background:#553342;border-color:#74465d}html[data-site=nailai] .public-footer p,html[data-site=nailai] .public-footer a{color:#eedbe3}html[data-site=nailai] .account-options{border-color:#b7839a}html[data-site=nailai] .account-options :is(a,button):hover{background:#70475c}html[data-site=nailai] .brand-mark{color:#fffaf8;background:#553342;border-color:#553342}html[data-site=nailai] .public-nav nav a.active{color:#883d58}html[data-site=nailai] .button.gold{color:#fff;background:#a84e6c;border-color:#a84e6c}html[data-site=nailai] .button.gold:hover{background:#883d58;border-color:#883d58}html[data-site=nailai] .gold-eyebrow,html[data-site=nailai] .welcome-product-link{color:#883d58}html[data-site=nailai] .shop-tag{color:#883d58;background:#f3e2e7}html[data-site=nailai] .shop-price{color:#553342}html[data-site=nailai] .welcome-method article>span{color:#883d58}html[data-site=nailai] .welcome-product,html[data-site=nailai] .shop-product{background:#fffaf8;border-color:#e2cdcf}html[data-site=nailai] .welcome-rail-actions button{color:#553342;background:#fff5f3;border-color:#dfbbc8}html[data-site=nailai] .hero-shade{background:linear-gradient(90deg,#35252ef0 0%,#35252ec4 34%,#35252e18 74%)}html[data-site=nailai] .welcome-page .carousel-dots button.active:after{background:#e3a8bc}html[data-site=nailai] .study-owned button{color:#553342;background:#fffaf8;border-color:#dfbbc8}html[data-site=nailai] .study-owned button[aria-pressed=true]{color:#fffaf8;background:#553342}html[data-site=nailai] .shop-filters button[aria-pressed=true]{color:#fffaf8;background:#553342;border-color:#553342}html[data-site=nailai] .trial-badge{color:#883d58;background:#f3e2e7;border-color:#dfbbc8}html[data-site=nailai] :is(button,a,input,textarea,select):focus-visible{outline-color:#a84e6c}@media (width<=720px){html[data-site=nailai] .welcome-page .hero-shade{background:linear-gradient(90deg,#35252ef0,#35252eaa)}}