:root{--ink:#17251f;--muted:#5f6e67;--paper:#f1eee5;--cream:#fffdf7;--green:#1e4d3c;--green-2:#376b57;--lime:#d7e36c;--blue:#cbe3ee;--amber:#f1d7a4;--rose:#efc5c4;--violet:#d9d2ee;--cyan:#bee1dc;--line:rgba(23,37,31,.18);--shadow:0 18px 50px rgba(23,37,31,.08);--serif:"Songti SC",SimSun,"Noto Serif CJK SC",serif;--sans:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.7}a{color:inherit;text-decoration:none}button,input{font:inherit}button{color:inherit}h1,h2,h3,p{margin-top:0}.skip-link{position:fixed;left:18px;top:-60px;z-index:1000;background:var(--ink);color:white;padding:10px 14px}.skip-link:focus{top:12px}.site-header{position:relative;z-index:20;min-height:84px;padding:16px clamp(22px,5vw,76px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(241,238,229,.94);backdrop-filter:blur(14px)}.site-brand{display:grid;gap:2px}.site-brand span{color:#5d746a;font-size:11px;letter-spacing:.15em}.site-brand strong{font-family:var(--serif);font-size:19px}.site-nav{display:flex;align-items:center;gap:clamp(15px,2.4vw,32px);font-size:13px}.site-nav a{padding:8px 0;border-bottom:2px solid transparent}.site-nav a:hover,.site-nav a[aria-current=page]{border-color:var(--green);color:var(--green)}.nav-toggle{display:none;border:1px solid var(--line);background:transparent;padding:7px 12px}.site-footer{padding:40px clamp(24px,6vw,96px);display:grid;grid-template-columns:1fr 2fr auto;gap:30px;align-items:start;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.site-footer div{display:grid}.site-footer strong{color:var(--ink);font-size:15px}.site-footer p{margin:0;max-width:720px}.site-footer a{color:var(--green);font-weight:700}.eyebrow{margin-bottom:20px;color:var(--green);font-size:11px;font-weight:800;letter-spacing:.2em;text-transform:uppercase}.home-hero{min-height:660px;padding:84px clamp(24px,7vw,110px) 60px;display:grid;grid-template-columns:minmax(0,1.55fr) minmax(310px,.68fr);gap:clamp(40px,8vw,120px);align-items:center;background:radial-gradient(circle at 76% 4%,rgba(215,227,108,.48),transparent 28%),linear-gradient(135deg,var(--cream),#e3eadb)}.hero-copy h1{max-width:850px;margin-bottom:26px;font-family:var(--serif);font-size:clamp(52px,7vw,94px);line-height:1.03;letter-spacing:-.055em}.hero-lead{max-width:760px;color:#4c6157;font-size:18px;line-height:1.9}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}.button{display:inline-flex;align-items:center;justify-content:center;padding:13px 21px;border:1px solid var(--green);font-size:13px;font-weight:750}.button.primary{background:var(--green);color:white}.button.ghost{background:rgba(255,255,255,.4)}.button:hover{transform:translateY(-1px)}.hero-note{padding:28px;background:rgba(255,253,247,.76);border:1px solid var(--line);box-shadow:var(--shadow)}.hero-note>span{display:block;margin-bottom:22px;color:#73827b;font:700 10px/1 var(--sans);letter-spacing:.18em}.hero-note strong{display:block;margin:17px 0 6px;font-family:var(--serif);font-size:20px}.hero-note p{margin-bottom:11px;color:var(--muted);font-size:13px}.hero-note a{display:inline-block;margin-top:12px;color:var(--green);font-size:13px;font-weight:700}.metrics-band{display:grid;grid-template-columns:repeat(4,1fr);padding:0 clamp(24px,7vw,110px);background:var(--green);color:white}.metrics-band div{min-height:138px;padding:30px 24px 26px 0;display:flex;align-items:flex-start;gap:15px;border-right:1px solid rgba(255,255,255,.2)}.metrics-band div+div{padding-left:28px}.metrics-band strong{font:700 40px/1 Georgia,serif;color:var(--lime)}.metrics-band span{font-size:13px;line-height:1.45}.metrics-band small{color:#c7d6cf;font-size:10px}.content-section{padding:90px clamp(24px,7vw,110px)}.content-section.alt{background:var(--cream);border-block:1px solid var(--line)}.section-head{max-width:850px;margin-bottom:42px}.section-head>p{margin-bottom:12px;color:#6c7e75;font-size:10px;font-weight:800;letter-spacing:.2em;text-transform:uppercase}.section-head h2{margin-bottom:10px;font-family:var(--serif);font-size:clamp(32px,4vw,54px);line-height:1.18;letter-spacing:-.025em}.section-head span{color:var(--muted)}.path-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.path-grid>a{min-height:300px;padding:28px;display:flex;flex-direction:column;border:1px solid var(--line);background:rgba(255,255,255,.45);transition:.2s}.path-grid>a:hover{transform:translateY(-4px);background:var(--cream);box-shadow:var(--shadow)}.path-grid span{margin-bottom:54px;color:#7d8b84;font:600 15px Georgia,serif}.path-grid h3{font-family:var(--serif);font-size:25px}.path-grid p{color:var(--muted);font-size:14px}.path-grid b{margin-top:auto;color:var(--green);font-size:12px}.unit-overview{padding-top:40px}.unit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.unit-card{min-height:330px;padding:25px;display:flex;flex-direction:column;background:var(--cream);border:1px solid var(--line);border-top:8px solid var(--green)}.unit-card.blue{border-top-color:#4c86a3}.unit-card.amber{border-top-color:#bd7e2d}.unit-card.rose{border-top-color:#a65058}.unit-card.violet{border-top-color:#7868a0}.unit-card.cyan{border-top-color:#488b82}.unit-card.lime{border-top-color:#95a131}.unit-meta,.unit-footer{display:flex;justify-content:space-between;gap:12px;color:#6e7d76;font-size:10px}.unit-card h3{margin:42px 0 16px;font-family:var(--serif);font-size:27px;line-height:1.25}.unit-card p{color:var(--muted);font-size:13px}.unit-footer{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}.research-strip{margin:0 clamp(24px,5vw,76px) 76px;padding:clamp(34px,5vw,62px);display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;background:var(--ink);color:white}.research-strip>div p{color:var(--lime);font-size:10px;letter-spacing:.18em}.research-strip h2{font-family:var(--serif);font-size:40px;line-height:1.2}.research-strip ul{margin:0;padding:0;list-style:none}.research-strip li{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.16);font-size:13px}.source-chip{display:inline-flex;margin:3px 5px;padding:4px 8px;border:1px solid currentColor;border-radius:99px;color:var(--green);font-size:10px;font-weight:700;white-space:nowrap}.research-strip .source-chip,.source-callout .source-chip{color:var(--lime)}.page-hero{padding:90px clamp(24px,7vw,110px);background:radial-gradient(circle at 84% 10%,rgba(215,227,108,.42),transparent 30%),var(--cream);border-bottom:1px solid var(--line)}.page-hero.compact{min-height:390px;display:flex;flex-direction:column;justify-content:center}.page-hero h1{max-width:1000px;margin-bottom:24px;font-family:var(--serif);font-size:clamp(48px,6.2vw,80px);line-height:1.05;letter-spacing:-.045em}.page-hero>p:last-child{max-width:820px;margin:0;color:var(--muted);font-size:18px}.evidence-banner{display:grid;grid-template-columns:1fr 1fr;margin-bottom:76px;border:1px solid var(--line)}.evidence-banner>div{padding:28px 32px;background:var(--cream)}.evidence-banner>div+div{border-left:1px solid var(--line);background:#e8eddf}.evidence-banner span{display:block;color:var(--green);font-size:10px;font-weight:800;letter-spacing:.15em}.evidence-banner strong{display:block;margin:8px 0;font-family:var(--serif);font-size:23px}.evidence-banner p{margin:0;color:var(--muted);font-size:13px}.insight-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.insight-grid article{padding:25px;min-height:245px;border:1px solid var(--line);background:rgba(255,255,255,.42)}.insight-grid span{color:#718078;font:600 14px Georgia,serif}.insight-grid h3{margin-top:38px;font-family:var(--serif);font-size:23px}.insight-grid p{color:var(--muted);font-size:13px}.table-wrap{width:100%;overflow-x:auto}.comparison-table,.pace-table,.answer-table{width:100%;border-collapse:collapse;background:white;font-size:13px}.comparison-table th,.comparison-table td,.pace-table th,.pace-table td,.answer-table th,.answer-table td{padding:18px;border:1px solid var(--line);vertical-align:top;text-align:left}.comparison-table thead th,.pace-table thead th,.answer-table thead th{background:var(--green);color:white;font-size:11px}.comparison-table tbody th{width:15%;background:#eef0e7;font-weight:400}.comparison-table tbody th strong{display:block;margin-top:5px;font-family:var(--serif);font-size:18px}.comparison-table td:nth-child(2){width:18%}.comparison-table td:nth-child(3){width:33%}.comparison-table td span{display:block;padding:4px 0;border-bottom:1px dotted var(--line)}.comparison-table td b{color:var(--green)}.transfer-map{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.transfer-map article{padding:26px;border:1px solid var(--line);background:rgba(255,255,255,.46)}.transfer-map header{display:flex;align-items:center;gap:12px}.transfer-map header b{padding:5px 8px;background:var(--green);color:white;font-size:11px}.transfer-map header strong{font-family:var(--serif);font-size:23px}.transfer-map>article>p{color:var(--muted);font-size:13px}.transfer-map article div{margin-top:10px;padding:13px;display:grid;grid-template-columns:130px 1fr;gap:12px;background:var(--cream);border-left:4px solid var(--lime)}.transfer-map div span{font-weight:700}.transfer-map div i{color:var(--muted);font-style:normal;font-size:12px}.warning-section{background:#efe3da}.redline-list{margin:0;padding:0;list-style:none;counter-reset:red}.redline-list li{display:grid;grid-template-columns:minmax(240px,.7fr) 1.3fr;gap:30px;padding:22px 0;border-top:1px solid var(--line)}.redline-list li:last-child{border-bottom:1px solid var(--line)}.redline-list b{font-family:var(--serif);font-size:20px}.redline-list span{color:var(--muted)}.source-callout{margin:76px clamp(24px,5vw,76px);padding:42px;display:grid;grid-template-columns:1fr 1fr;gap:40px;background:var(--green);color:white}.source-callout h2{font-family:var(--serif);font-size:34px}.source-callout p{margin:0;color:#d3e0da}.source-callout>div:last-child{display:flex;flex-wrap:wrap;align-content:start;gap:4px}.four-step{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.four-step article{min-height:290px;padding:25px;border:1px solid var(--line);background:var(--cream)}.four-step article>span{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--green);color:var(--lime);font:700 20px Georgia,serif}.four-step h3{margin-top:38px;font-family:var(--serif);font-size:22px}.four-step p{color:var(--muted);font-size:13px}.four-step small{display:block;padding-top:15px;border-top:1px solid var(--line);color:#6f7b75}.lesson-flow{display:grid;grid-template-columns:repeat(4,1fr)}.lesson-flow>div{min-height:290px;padding:28px;border:1px solid var(--line);background:white}.lesson-flow>div+div{border-left:0}.lesson-flow b{font:700 24px Georgia,serif}.lesson-flow span{display:block;margin:42px 0 6px;color:var(--green);font-size:10px;font-weight:800;letter-spacing:.16em}.lesson-flow h3{font-family:var(--serif);font-size:24px}.lesson-flow p{color:var(--muted);font-size:13px}.column-table{border:1px solid var(--line)}.column-table .row{display:grid;grid-template-columns:.8fr 1fr 1.5fr 1fr}.column-table .row>*{padding:15px 18px;border-right:1px solid var(--line)}.column-table .row>*:last-child{border:0}.column-table .row+.row{border-top:1px solid var(--line)}.column-table .head{background:var(--green);color:white;font-size:11px}.column-table .row:not(.head) span:first-child{font-weight:800;color:var(--green)}.column-table .row:not(.head){font-size:12px}.unit-methods{display:grid;grid-template-columns:1fr 1fr;gap:16px}.unit-methods article{padding:28px;border:1px solid var(--line);background:white}.unit-methods header{display:flex;align-items:center;gap:15px}.unit-methods header span{font:700 30px Georgia,serif;color:var(--green)}.unit-methods h3{font-family:var(--serif);font-size:25px}.unit-methods p{margin-bottom:10px;color:var(--muted);font-size:13px}.unit-methods p b{color:var(--ink)}.rubric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.rubric-grid div{padding:24px;border:1px solid var(--line);background:var(--cream)}.rubric-grid b{font-family:var(--serif);font-size:20px}.rubric-grid p{margin:9px 0 0;color:var(--muted);font-size:13px}.answer-formula{margin-top:24px;padding:30px;background:var(--ink);color:white}.answer-formula span{color:var(--lime);font-size:10px;letter-spacing:.16em}.answer-formula p{margin:12px 0 5px;font-size:18px}.answer-formula small{color:#becbc5}.exam-structure{padding:0 clamp(24px,7vw,110px);display:grid;grid-template-columns:1.1fr 1fr 1fr 1.2fr;background:var(--green);color:white}.exam-structure>div{min-height:210px;padding:28px;border-right:1px solid rgba(255,255,255,.18)}.exam-structure span{display:block;color:#c9d7d0;font-size:10px;letter-spacing:.15em}.structure-score strong{font:700 72px/1 Georgia,serif;color:var(--lime)}.structure-score i{font-style:normal}.exam-structure p{margin:14px 0 0;color:#d5e0db;font-size:12px}.structure-part strong{display:block;margin-top:38px;font-family:var(--serif);font-size:26px}.structure-tip b{color:var(--lime)}.year-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.year-grid article{padding:28px;border:1px solid var(--line);background:var(--cream)}.year-grid header{display:flex;align-items:baseline;gap:14px}.year-grid header span{font:700 30px Georgia,serif;color:var(--green)}.year-grid header b{font-family:var(--serif);font-size:20px}.year-grid p{color:var(--muted);font-size:13px}.year-grid ul{padding-left:18px;font-size:12px}.question-ladder{display:grid;grid-template-columns:repeat(7,1fr);border:1px solid var(--line)}.question-ladder>div{min-height:260px;padding:20px;border-right:1px solid var(--line);background:white}.question-ladder>div:last-child{border:0}.question-ladder b{font:700 24px Georgia,serif;color:var(--green)}.question-ladder span{display:block;margin:38px 0 8px;font-family:var(--serif);font-size:18px;font-weight:700}.question-ladder p{color:var(--muted);font-size:11px}.rules-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.rules-grid article{padding:26px;border:1px solid var(--line)}.rules-grid b{color:var(--green);font:700 14px Georgia,serif}.rules-grid h3{margin:25px 0 8px;font-family:var(--serif);font-size:22px}.rules-grid p{color:var(--muted);font-size:13px}.loss-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.loss-grid p{margin:0;padding:22px;background:white;border-left:5px solid #b45955;color:var(--muted);font-size:13px}.loss-grid b{display:block;margin-bottom:7px;color:var(--ink);font-family:var(--serif);font-size:18px}.pace-table tbody th{white-space:nowrap;background:#edf1e8}.pace-table td:nth-child(2){text-align:center}.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.tool-grid article{padding:25px;border:1px solid var(--line);background:var(--cream)}.tool-grid span{color:var(--green);font:700 13px Georgia,serif}.tool-grid h3{margin-top:32px;font-family:var(--serif);font-size:22px}.tool-grid ul{padding-left:17px;color:var(--muted);font-size:12px}.use-cases{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.use-cases article{padding:25px;border:1px solid var(--line);background:white}.use-cases b{color:var(--green);font:700 22px Georgia,serif}.use-cases h3{margin-top:28px;font-family:var(--serif)}.use-cases p{color:var(--muted);font-size:12px}.paper-index-hero{background:radial-gradient(circle at 80% 10%,rgba(215,227,108,.5),transparent 28%),var(--cream)}.bank-summary{padding:0 clamp(24px,7vw,110px);display:grid;grid-template-columns:repeat(4,1fr);background:var(--green);color:white}.bank-summary>div{min-height:130px;padding:28px;display:flex;align-items:center;gap:14px;border-right:1px solid rgba(255,255,255,.2)}.bank-summary strong{font:700 36px Georgia,serif;color:var(--lime)}.bank-summary span{font-size:12px}.bank-tools{position:sticky;top:0;z-index:10;padding:18px clamp(24px,7vw,110px);display:flex;align-items:end;justify-content:space-between;gap:20px;background:rgba(241,238,229,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.bank-tools label{display:grid;gap:5px;flex:1;max-width:500px}.bank-tools label span{font-size:10px;font-weight:700}.bank-tools input{width:100%;padding:11px 14px;border:1px solid var(--line);background:white}.bank-tools>div{display:flex}.filter,.source-filter{padding:9px 14px;border:1px solid var(--line);background:transparent;font-size:12px;cursor:pointer}.filter+.filter,.source-filter+.source-filter{border-left:0}.filter.is-active,.source-filter.is-active{background:var(--green);color:white}.paper-group{padding:70px clamp(24px,7vw,110px);border-bottom:1px solid var(--line)}.paper-group:nth-child(even){background:var(--cream)}.paper-group>header{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px}.paper-group>header span{color:var(--green);font-size:10px;font-weight:800;letter-spacing:.15em}.paper-group>header h2{margin:4px 0 0;font-family:var(--serif);font-size:34px}.paper-group>header p{margin:0;color:var(--muted);font-size:12px}.paper-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.paper-card{min-height:275px;padding:24px;display:flex;flex-direction:column;border:1px solid var(--line);background:white;transition:.2s}.paper-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.paper-card>div{display:flex;justify-content:space-between}.paper-card>div span{display:grid;place-items:center;width:34px;height:34px;background:var(--green);color:var(--lime);font:700 14px Georgia,serif}.paper-card>div b{color:var(--green);font-size:10px;letter-spacing:.12em}.paper-card h3{margin:34px 0 10px;font-family:var(--serif);font-size:21px;line-height:1.35}.paper-card p{color:var(--muted);font-size:12px}.paper-card footer{margin-top:auto;padding-top:16px;display:flex;justify-content:space-between;border-top:1px solid var(--line);font-size:10px}.paper-card footer strong{color:var(--green)}.bank-note{margin:70px clamp(24px,7vw,110px);padding:36px;background:var(--ink);color:white}.bank-note h2{font-family:var(--serif);font-size:30px}.bank-note>div{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.bank-note p{color:#c7d2cd;font-size:12px}.bank-note b{display:block;color:var(--lime)}.evidence-levels{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.evidence-levels article{padding:28px;border:1px solid var(--line);background:var(--cream)}.evidence-levels span{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--green);color:var(--lime);font:700 18px Georgia,serif}.evidence-levels h3{margin-top:38px;font-family:var(--serif);font-size:22px}.evidence-levels p{color:var(--muted);font-size:13px}.boundary-box{margin-top:28px;padding:34px;border-left:8px solid var(--lime);background:var(--green);color:white}.boundary-box h2{font-family:var(--serif);font-size:29px}.boundary-box p{color:#d5e0da;font-size:13px}.boundary-box b{color:var(--lime)}.source-filters{display:flex;flex-wrap:wrap;margin-bottom:26px}.source-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.source-list article{padding:24px;border:1px solid var(--line);background:white}.source-list article>div{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:9px}.source-list article>div span{color:var(--green);font-weight:800}.source-list article>div time{margin-left:auto}.source-list h3{margin:20px 0 8px;font-family:var(--serif);font-size:18px;line-height:1.4}.source-list h3 a:hover{color:var(--green)}.source-list p{margin:0;color:var(--muted);font-size:12px}.legal-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.legal-grid p{margin:0;padding:24px;border:1px solid var(--line);background:var(--cream);color:var(--muted)}.legal-grid b{color:var(--ink)}.paper-page{background:#e7e6e0}.paper-page .site-header,.paper-page .site-footer{display:none}.paper-toolbar{position:sticky;top:0;z-index:20;padding:12px 24px;display:flex;justify-content:space-between;align-items:center;background:var(--ink);color:white;font-size:12px}.paper-toolbar>div{display:flex;gap:8px}.paper-toolbar button{padding:8px 12px;border:1px solid rgba(255,255,255,.3);background:transparent;color:white;cursor:pointer}.paper-toolbar .print-primary{background:var(--lime);color:var(--ink);border-color:var(--lime);font-weight:800}.paper-toolbar .print-secondary{background:var(--green-2)}.paper-shell{width:min(920px,calc(100% - 40px));margin:34px auto;padding:58px 64px;background:white;box-shadow:0 12px 38px rgba(0,0,0,.1)}.paper-head{text-align:center}.paper-head>p:first-child{margin-bottom:8px;font-size:11px;letter-spacing:.12em}.paper-head h1{margin-bottom:18px;font-family:var(--serif);font-size:30px;line-height:1.4}.paper-head>div{display:flex;justify-content:center;flex-wrap:wrap;gap:7px 20px;font-size:11px}.student-fields{margin-top:24px;padding:10px 0;border-block:1px solid #777;font-size:12px}.paper-notice{margin:24px 0;padding:14px 18px;background:#f4f3ee;border-left:4px solid var(--green);font-size:11px}.paper-notice p{margin:3px 0 0}.paper-section{margin-top:34px}.paper-section>h2,.answer-section>h2,.fact-sources>h2,.blueprint>h2{font-family:var(--serif);font-size:19px;border-bottom:2px solid #333;padding-bottom:8px}.section-note{font-size:11px}.mcq-list{padding-left:26px}.mcq{margin:15px 0;break-inside:avoid}.mcq>p{margin-bottom:5px;font-size:13px}.options{display:grid;grid-template-columns:1fr 1fr;gap:2px 24px;padding-left:25px;font-size:12px}.material-question{margin-top:28px;break-inside:auto}.material-question h3{font-family:var(--serif);font-size:16px}.material-question h3 span,.material-question li>span{font-size:11px;font-weight:400}.material{margin:8px 0;padding:12px 15px;background:#f5f4f0;text-indent:2em;font-size:12px}.material-question>ol{padding-left:24px;font-size:12px}.material-question>ol>li{margin:12px 0;break-inside:avoid}.answer-lines{height:calc(var(--lines) * 1.55em);margin-top:6px;background:repeating-linear-gradient(to bottom,transparent 0,transparent calc(1.55em - 1px),#bbb calc(1.55em - 1px),#bbb 1.55em)}.paper-end{margin-top:40px;text-align:center;font-size:10px}.teacher-paper{display:none}.show-answers .teacher-paper{display:block}.answer-head{padding-bottom:20px;border-bottom:4px solid var(--green)}.answer-head>p{color:var(--green);font-size:11px;font-weight:800;letter-spacing:.15em}.answer-head h1{font-family:var(--serif);font-size:27px}.answer-head>div{display:flex;gap:20px;color:var(--muted);font-size:11px}.blueprint{margin:28px 0}.blueprint>div{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line)}.blueprint p{margin:0;padding:12px;display:grid;grid-template-columns:90px 1fr;font-size:11px}.blueprint p:nth-child(even){border-left:1px solid var(--line)}.blueprint p:nth-child(n+3){border-top:1px solid var(--line)}.blueprint span{color:var(--muted)}.answer-table{font-size:10px}.answer-table th,.answer-table td{padding:9px}.answer-table tbody th{width:42px;text-align:center}.answer-table tbody td:nth-child(2){width:42px;text-align:center;font-weight:800}.answer-item{margin:24px 0}.answer-item>h3{padding-bottom:6px;border-bottom:1px solid var(--line);font-family:var(--serif);font-size:17px}.answer-item>div{padding:9px 0}.answer-item>div b{font-size:11px;color:var(--green)}.answer-item>div p{margin:4px 0;font-size:12px;white-space:pre-line}.answer-item>div small{display:block;padding:7px 10px;background:#edf2ec;color:var(--muted);font-size:10px}.fact-sources{margin-top:35px}.fact-sources ol{padding-left:20px;font-size:11px}.fact-sources li{margin:8px 0}.fact-sources li span{display:block;color:var(--muted);font-size:9px}.fact-sources>p{color:var(--muted);font-size:10px}
@media(max-width:1050px){.path-grid,.unit-grid,.four-step,.tool-grid,.use-cases{grid-template-columns:1fr 1fr}.question-ladder{grid-template-columns:repeat(4,1fr)}.question-ladder>div{border-bottom:1px solid var(--line)}.home-hero{grid-template-columns:1fr}.exam-structure{grid-template-columns:1fr 1fr}.exam-structure>div:nth-child(2){border-right:0}.exam-structure>div:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.18)}}
@media(max-width:760px){.site-header{min-height:72px}.nav-toggle{display:block}.site-nav{display:none;position:absolute;left:0;right:0;top:72px;padding:18px 24px;flex-direction:column;align-items:stretch;background:var(--cream);border-bottom:1px solid var(--line)}.nav-open .site-nav{display:flex}.home-hero,.content-section,.page-hero{padding-left:22px;padding-right:22px}.home-hero{padding-top:55px}.hero-copy h1{font-size:49px}.hero-lead,.page-hero>p:last-child{font-size:15px}.metrics-band,.bank-summary{grid-template-columns:1fr 1fr;padding:0}.metrics-band div,.bank-summary>div{padding-left:22px!important}.path-grid,.unit-grid,.insight-grid,.transfer-map,.four-step,.lesson-flow,.unit-methods,.rubric-grid,.year-grid,.rules-grid,.loss-grid,.tool-grid,.use-cases,.paper-card-grid,.evidence-levels,.source-list,.legal-grid{grid-template-columns:1fr}.research-strip,.source-callout{grid-template-columns:1fr}.evidence-banner{grid-template-columns:1fr}.evidence-banner>div+div{border-left:0;border-top:1px solid var(--line)}.column-table{overflow-x:auto}.column-table .row{min-width:760px}.question-ladder{grid-template-columns:1fr 1fr}.redline-list li{grid-template-columns:1fr;gap:4px}.exam-structure{grid-template-columns:1fr}.exam-structure>div{border-right:0;border-bottom:1px solid rgba(255,255,255,.18)}.bank-tools{position:static;align-items:stretch;flex-direction:column}.paper-group{padding:48px 22px}.paper-group>header{align-items:start;flex-direction:column}.bank-note{margin:45px 22px}.bank-note>div{grid-template-columns:1fr}.site-footer{grid-template-columns:1fr}.paper-toolbar{align-items:start;gap:10px;flex-direction:column}.paper-toolbar>div{width:100%;overflow-x:auto}.paper-shell{width:calc(100% - 20px);padding:28px 22px}.options{grid-template-columns:1fr}.blueprint>div{grid-template-columns:1fr}.blueprint p:nth-child(even){border-left:0}.blueprint p:nth-child(n+2){border-top:1px solid var(--line)}}
@media print{@page{size:A4;margin:15mm 14mm}html,body{background:white!important;color:#000!important;font-size:10.5pt}.paper-toolbar,.site-header,.site-footer{display:none!important}.paper-shell{display:block;width:auto;margin:0;padding:0;box-shadow:none}.teacher-paper{display:none!important}.student-paper{display:block!important}html[data-print-mode=answer] .student-paper{display:none!important}html[data-print-mode=answer] .teacher-paper{display:block!important}.paper-head h1{font-size:19pt}.paper-head,.paper-notice{break-inside:avoid}.paper-section>h2{font-size:13pt}.mcq{margin:9pt 0}.mcq>p,.options,.material,.material-question>ol{font-size:9.5pt}.options{gap:0 16pt}.material{background:#f2f2f2!important;print-color-adjust:exact;-webkit-print-color-adjust:exact}.answer-lines{background:repeating-linear-gradient(to bottom,transparent 0,transparent calc(1.55em - .4pt),#aaa calc(1.55em - .4pt),#aaa 1.55em)!important;print-color-adjust:exact;-webkit-print-color-adjust:exact}.material-question{break-before:auto}.answer-item,.fact-sources,.blueprint{break-inside:auto}.answer-table{font-size:8pt}.answer-table tr{break-inside:avoid}.answer-item>div{break-inside:avoid}.fact-sources a{color:#000;text-decoration:none}.fact-sources a[href]::after{content:""}.paper-end{margin-top:20pt}.source-chip{display:none}}