:root{--navy:#18374b;--navy-deep:#102b3d;--ink:#263b48;--muted:#586773;--gold:#88682f;--gold-light:#c1a36c;--line:#d7dcd9;--paper:#fff;--wash:#f5f6f3;--serif:Georgia,"Times New Roman",serif;--sans:Inter,"Segoe UI",Arial,sans-serif;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 var(--sans);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:.22em}a:hover{color:var(--gold)}a:focus-visible,button:focus-visible{outline:3px solid var(--gold);outline-offset:5px}button{font:inherit}button,a{-webkit-tap-highlight-color:transparent}[hidden]{display:none!important}.container{width:min(1120px,calc(100% - 80px));margin-inline:auto}.skip-link{position:absolute;left:20px;top:-100px;background:white;padding:12px 20px;z-index:100}.skip-link:focus{top:12px}.status-bar{background:var(--navy);color:#eef2f4;padding:9px 0;text-align:center;font:10px/1.5 var(--mono);text-transform:uppercase;letter-spacing:.13em}.status-bar span{color:var(--gold-light);margin:0 16px}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}.header-inner{min-height:94px;display:flex;justify-content:space-between;align-items:center;gap:32px}.brand{text-decoration:none;display:flex;flex-direction:column;gap:2px;flex-shrink:0}.brand-name{font:22px/1.3 var(--serif);letter-spacing:.08em;text-transform:uppercase;color:var(--navy)}.brand-sub{font:9px/1.6 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}#site-nav{display:flex;align-items:center;gap:26px;font-size:12px;font-weight:550}#site-nav a{text-decoration:none;white-space:nowrap}#site-nav a:hover{text-decoration:underline}.nav-source{border-left:1px solid var(--line);padding-left:24px}.menu-toggle{display:none;border:1px solid var(--line);background:white;color:var(--navy);padding:7px 12px;font-size:13px}.menu-toggle span{font-size:19px;margin-left:9px}.hero{display:grid;grid-template-columns:minmax(0,1.62fr) minmax(260px,.8fr);gap:76px;align-items:center;padding-top:100px;padding-bottom:94px}.eyebrow,.small-label{font:10px/1.6 var(--mono);font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}.line-label{display:flex;align-items:center;gap:12px;margin:0 0 22px}.line-label::before{content:"";display:block;width:22px;height:1px;background:var(--gold-light);flex-shrink:0}h1,h2,h3,p{margin-top:0}h1{font:clamp(45px,4.8vw,66px)/1.09 var(--serif);font-weight:400;letter-spacing:-.032em;color:var(--navy);margin-bottom:27px}h1 em{font-weight:400;font-style:italic;color:var(--navy)}.hero-description{font-size:17px;line-height:1.8;max-width:600px;color:var(--muted);margin-bottom:30px}.actions{display:flex;gap:12px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:22px;min-height:46px;padding:10px 18px;text-decoration:none;font-size:12px;font-weight:650;border:1px solid var(--navy);transition:background .15s,color .15s}.button-primary{background:var(--navy);color:white}.button-primary:hover{background:var(--navy-deep);color:white}.button-secondary{border-color:var(--line);color:var(--navy);background:white}.button-secondary:hover{border-color:var(--navy);color:var(--navy)}.subject-line{display:flex;gap:15px;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:35px;padding-top:17px;font:9px/1.7 var(--mono);letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}.subject-line span::before{content:"";display:inline-block;width:3px;height:3px;background:var(--gold-light);margin:0 7px 2px 0}.reading-note{border-top:2px solid var(--gold-light);background:var(--wash);padding:25px 26px 22px}.reading-note>.eyebrow{font-size:9px;margin-bottom:15px}.reading-note h2{font:27px/1.25 var(--serif);color:var(--navy);margin-bottom:21px}.reading-note>a{display:flex;align-items:start;gap:12px;text-decoration:none;border-top:1px solid var(--line);padding:15px 0}.reading-note>a>span:last-child{margin-left:auto;color:var(--gold);font-size:15px}.index{font:11px/1.7 var(--mono);letter-spacing:.06em;color:var(--gold);font-weight:600}.reading-note strong{display:block;font-size:11px;font-weight:650}.reading-note small{display:block;font-size:10px;line-height:1.6;color:var(--muted);margin-top:2px}.note-caption{border-top:1px solid var(--line);padding-top:15px;font-size:10px;line-height:1.7;color:var(--muted);margin:0}.section{padding-top:74px;padding-bottom:78px;border-top:1px solid var(--line)}.section-heading{display:grid;grid-template-columns:1.2fr 1fr;gap:80px;align-items:end;margin-bottom:42px}.section-heading .line-label{margin-bottom:14px}.section-heading h2,.about-grid h2,.revision-section h2{font:clamp(30px,3vw,39px)/1.2 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23px}.feature-links{display:flex;flex-direction:column;gap:10px;font-size:11px;font-weight:650}.feature-links a{width:fit-content}.feature-links span{color:var(--gold);margin-left:7px}.method-section{background:var(--navy);color:#e5edf1;padding:76px 0 55px}.method-section .eyebrow,.method-section .section-heading>p{color:#b8c8d1}.method-section h2,.method-section h3{color:white}.method-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}.method-grid article{border-top:1px solid #466071;padding-top:23px}.method-grid .index{color:#d3b77d;font-size:10px}.method-grid h3{font:25px/1.25 var(--serif);font-weight:400;margin:16px 0 13px}.method-grid p{font-size:12px;line-height:1.9;color:#cad6dd;margin-bottom:0}.method-footer{border-top:1px solid #466071;margin-top:36px;padding-top:24px;display:flex;gap:34px;flex-wrap:wrap}.text-link{font-size:12px;font-weight:600}.text-link span{color:var(--gold);margin-left:7px}.method-section .text-link:hover{color:#e6d5af}.method-section .text-link span{color:#d3b77d}#library{border-top:0}.library-tools{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:14px}.filters{display:flex;gap:21px;flex-wrap:wrap}.filters button{border:0;border-bottom:2px solid transparent;padding:8px 0;background:transparent;color:var(--muted);font-size:11px;cursor:pointer}.filters button[aria-pressed=true]{color:var(--navy);border-bottom-color:var(--gold);font-weight:650}.filters button:hover{color:var(--navy)}.result-count{margin:0;font:10px var(--mono);color:var(--muted);white-space:nowrap}.library-row{display:grid;grid-template-columns:36px minmax(0,1fr) 130px;gap:24px;border-top:1px solid var(--line);padding:27px 0 26px}.library-row>.index{padding-top:3px}.library-row .eyebrow{font-size:8px}.library-row h3{font:25px/1.28 var(--serif);font-weight:400;color:var(--navy);margin:8px 0 10px}.library-row h3 a{text-decoration:none}.library-row h3 a:hover{text-decoration:underline}.library-row p{font-size:12px;line-height:1.8;max-width:670px;margin-bottom:8px;color:var(--muted)}.library-row .boundary{font-size:10px;line-height:1.7;color:var(--muted);margin:0;max-width:670px}.library-links{display:flex;flex-direction:column;justify-content:center;gap:12px;font-size:10px;font-weight:600;align-items:start}.library-links span{color:var(--gold);margin-left:5px}.library-note{border-top:1px solid var(--line);padding-top:23px;display:flex;justify-content:space-between;gap:45px;align-items:center}.library-note p{font-size:11px;color:var(--muted);line-height:1.8;max-width:590px;margin:0}.library-note a{white-space:nowrap}.about-section{background:var(--wash);padding:76px 0}.about-grid{display:grid;grid-template-columns:1.18fr 1fr;gap:90px;align-items:start}.about-grid h2{margin-bottom:25px}.about-grid .about-lead{font-size:16px;line-height:1.8;color:var(--ink);margin-bottom:20px}.about-grid p{font-size:13px;color:var(--muted);line-height:1.9;margin-bottom:24px}.review-panel{border-top:2px solid var(--gold-light);padding-top:23px}.review-panel>.eyebrow{font:10px/1.6 var(--mono)}.review-panel dl{margin:0 0 21px}.review-panel dl>div{display:grid;grid-template-columns:125px 1fr;gap:20px;padding:13px 0;border-bottom:1px solid var(--line);font-size:11px;line-height:1.7}.review-panel dt{color:var(--muted)}.review-panel dd{margin:0;color:var(--navy);font-weight:550}.review-panel>p:last-child{font-size:11px;line-height:1.8;margin:0}.revision-section{display:grid;grid-template-columns:1.18fr 1fr;gap:90px;border:0}.revision-section h2{font-size:32px;margin-bottom:19px}.revision-section>div>p:last-child{font-size:12px;line-height:1.8;color:var(--muted);max-width:480px;margin:0}.revision-links{display:flex;flex-direction:column}.revision-links a{display:flex;flex-direction:column;gap:8px;text-decoration:none;border-top:1px solid var(--line);padding:18px 0 20px}.revision-links strong{font-size:13px;font-weight:550}.revision-links strong span{float:right;color:var(--gold)}.revision-links a:hover strong{text-decoration:underline}.site-footer{background:var(--navy-deep);color:#d1dde4;padding-top:45px;padding-bottom:25px}.footer-main{display:flex;justify-content:space-between;gap:50px;padding-bottom:35px}.footer-main .brand-name{color:white;font-size:20px;text-decoration:none}.footer-main p{font-size:11px;line-height:1.8;margin:14px 0 0}.footer-main .footer-note{font-size:10px;color:#a7bac7;max-width:420px;margin-top:9px}.footer-main nav{display:grid;grid-template-columns:1fr 1fr;gap:14px 32px;align-content:start;font-size:11px}.footer-main nav a{text-decoration:none}.footer-main nav a:hover{color:#e6d5af;text-decoration:underline}.footer-bottom{display:flex;align-items:center;gap:27px;flex-wrap:wrap;border-top:1px solid #385264;padding-top:21px;font:9px/1.7 var(--mono);color:#b8c8d1}.footer-bottom span{margin-right:auto}.footer-bottom a:hover{color:white}
@media(min-width:1500px){.hero{padding-top:118px;padding-bottom:112px}}
@media(max-width:1000px){.container{width:calc(100% - 56px)}.header-inner{gap:20px}#site-nav{gap:16px;font-size:11px}.brand-name{font-size:19px}.brand-sub{font-size:8px}.nav-source{padding-left:16px}.hero{gap:38px;padding-top:78px;padding-bottom:76px;grid-template-columns:1.5fr 1fr}h1{font-size:48px}.reading-note{padding:21px}.reading-note h2{font-size:24px}.section-heading{gap:40px}.features{gap:25px}.feature h3{font-size:26px}.about-grid,.revision-section{gap:50px}}
@media(max-width:760px){html{scroll-padding-top:90px}.container{width:calc(100% - 40px)}.status-bar{font-size:8px;padding:8px 0;letter-spacing:.06em}.status-bar span{margin:0 5px}.header-inner{min-height:80px;flex-wrap:wrap;padding:16px 0;gap:16px}.brand-name{font-size:19px}.brand-sub{font-size:8px}#site-nav{width:100%;justify-content:flex-start;gap:20px;flex-wrap:wrap;padding:5px 0;font-size:12px}.js-enabled .menu-toggle{display:block}.js-enabled #site-nav{display:none}.js-enabled #site-nav.is-open{display:flex}.nav-source{border-left:0;padding-left:0}.hero{grid-template-columns:1fr;gap:42px;padding-top:60px;padding-bottom:60px}h1{font-size:clamp(41px,8.5vw,58px);letter-spacing:-.035em}.hero-description{font-size:15px;max-width:540px}.line-label{font-size:8px;letter-spacing:.12em;margin-bottom:18px}.hero .actions{gap:10px}.button{font-size:11px;gap:16px;min-height:44px;padding:10px 14px}.subject-line{font-size:8px;gap:11px;margin-top:29px}.reading-note{padding:25px;max-width:none}.reading-note h2{font-size:26px}.reading-note>a{padding:14px 0}.reading-note strong{font-size:12px}.reading-note small{font-size:11px}.note-caption{font-size:11px}.section{padding-top:56px;padding-bottom:58px}.section-heading{grid-template-columns:1fr;gap:20px;margin-bottom:32px}.section-heading h2,.about-grid h2{font-size:32px}.section-heading>p{font-size:13px;max-width:540px}.features{grid-template-columns:1fr;gap:37px}.feature h3{font-size:29px;max-width:none}.feature>p{font-size:14px;margin-bottom:20px}.feature-focus p{font-size:12px;margin-bottom:20px}.feature-links{flex-direction:row;flex-wrap:wrap;gap:14px 24px;font-size:12px}.method-section{padding:57px 0 40px}.method-grid{grid-template-columns:1fr;gap:29px}.method-grid h3{font-size:26px;margin-top:12px}.method-grid p{font-size:13px;max-width:540px}.method-footer{gap:18px;margin-top:29px}.method-footer a{font-size:11px}.library-tools{align-items:start}.filters{gap:9px 20px}.filters button{font-size:11px}.result-count{font-size:9px;padding-top:12px}.library-row{grid-template-columns:23px minmax(0,1fr);gap:14px;padding:24px 0}.library-row h3{font-size:25px}.library-row p{font-size:13px}.library-row .boundary{font-size:11px}.library-links{grid-column:2;flex-direction:row;gap:24px;font-size:11px;margin-top:1px}.library-note{align-items:start;flex-direction:column;gap:17px}.library-note p{font-size:12px}.library-note a{white-space:normal}.about-section{padding:56px 0}.about-grid,.revision-section{grid-template-columns:1fr;gap:38px}.about-grid .about-lead{font-size:16px}.about-grid p{font-size:13px}.review-panel dl>div{font-size:12px;grid-template-columns:105px 1fr;gap:14px}.review-panel>p:last-child{font-size:12px}.revision-section{gap:27px}.revision-section h2{font-size:31px}.revision-section>div>p:last-child{font-size:13px}.footer-main{flex-direction:column;gap:28px}.footer-main nav{gap:15px 25px;font-size:12px}.footer-bottom{gap:14px;align-items:start;font-size:8px}.footer-bottom span{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
/* Prominent student study link; collapse navigation before it becomes crowded. */
#site-nav{gap:20px}#site-nav .nav-study{color:#fff;font-size:11px;min-height:40px;padding:9px 13px;gap:15px;white-space:nowrap}#site-nav .nav-study:hover{color:#fff;text-decoration:none}
@media(min-width:761px) and (max-width:1100px){.header-inner{flex-wrap:wrap;padding:16px 0}.js-enabled .menu-toggle{display:block}#site-nav{width:100%;flex-wrap:wrap;justify-content:flex-start;padding:5px 0}.js-enabled #site-nav{display:none}.js-enabled #site-nav.is-open{display:flex}}