@import url('/assets/components.css?v=80068d57947f');
@import url('/assets/colors.css?v=3f9e936b733a');
@import url('/assets/typography.css?v=b08b4e12e6c1');
@import url('/assets/spacing.css?v=2e8f91b091aa');
:root{--global-header-height:58px;--ink:var(--color-text-primary);--muted:var(--color-text-muted);--blue:var(--color-link);--gray:var(--color-surface);--line:var(--color-border);--width:min(87.5vw,1680px)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;color:var(--color-text-primary);background:var(--color-background);font-family:var(--font-body);font-size:var(--type-body);line-height:var(--leading-body);font-synthesis:none;word-break:keep-all;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:var(--ui-focus-width) solid var(--color-focus);outline-offset:var(--ui-focus-offset)}img{max-width:100%;display:block}button{border:0}p{line-height:1.6}h1,h2,h3,p{margin:0}button:disabled{opacity:1;cursor:default;background:var(--color-disabled);color:var(--color-on-disabled)}.skip{position:fixed;top:-100px;left:20px;z-index:100;background:white;padding:15px}.skip:focus{top:10px}.global-header{height:var(--global-header-height);background:rgba(250,250,252,.95);position:relative;z-index:40}.global-inner{height:100%;max-width:1060px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:26px;padding:0 22px}.wordmark{font-size:var(--type-note);font-weight:800;letter-spacing:normal;white-space:nowrap;line-height:var(--leading-body)}.desktop-nav{display:flex;align-items:center;justify-content:space-between;gap:27px;flex:1}.desktop-nav a{font-size:var(--type-note);white-space:nowrap;line-height:var(--leading-body)}.header-icon{background:none;width:var(--ui-control-height);height:var(--ui-control-height);display:grid;place-items:center;padding:0;color:var(--ink)}.header-icon svg{width:var(--ui-icon-size);height:var(--ui-icon-size);fill:none;stroke:currentColor;stroke-width:var(--ui-icon-stroke)}.mobile-toggle{display:none}.mega{display:none;position:absolute;top:var(--global-header-height);left:0;right:0;background:#fafafc;padding:36px max(6.25vw,calc((100vw - 1020px)/2)) 50px;box-shadow:0 35px 45px #0001;gap:80px}.global-header:has(.n-nav:hover) .mega,.mega.keyboard-open,.mega:hover,.mega:focus-within{display:flex}.mega small{display:block;color:var(--muted);font-size:var(--type-note);margin-bottom:20px;line-height:var(--leading-body)}.mega a{display:block;font-size:var(--type-card);font-weight:600;margin:10px 0;line-height:var(--leading-heading);font-weight:600}.mega .secondary a{font-size:var(--type-note);font-weight:500;line-height:var(--leading-body)}.ribbon{min-height:52px;background:var(--gray);font-size:var(--type-note);padding:16px 24px;text-align:center;line-height:var(--leading-body)}.ribbon a{color:var(--blue);white-space:nowrap;margin-left:10px}.viewport{width:var(--width);margin:auto}.page-title{font-size:var(--type-title);letter-spacing:var(--tracking-heading);line-height:var(--leading-heading);font-weight:800;padding:72px 0 56px;font-family:var(--font-display);font-weight:800}.chapter-nav{display:flex;align-items:flex-start;gap:42px;overflow-x:auto;padding:0 0 44px;scrollbar-width:none}.chapter-nav a{display:flex;align-items:center;flex-direction:column;gap:12px;flex:0 0 84px;font-size:var(--type-note);text-align:center;white-space:nowrap;line-height:var(--leading-body)}.chapter-nav img{height:65px;width:48px;object-fit:contain;transition:transform .25s}.chapter-nav a:hover img{transform:translateY(-4px)}.chapter-nav .nav-symbol{height:65px;display:grid;place-items:center;font-size:38px;font-weight:300}.chapter-nav .new{color:#b64400;font-size:var(--type-note);margin-top:-6px;line-height:var(--leading-body)}.hero-rail{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:20px;padding:0 6.25vw;scrollbar-width:none}.hero-panel{min-width:100%;height:680px;border-radius:var(--ui-radius-container);position:relative;overflow:hidden;scroll-snap-align:center;background:#f5f5f7;text-align:center;padding:42px 30px 0}.hero-panel h2{font-size:var(--type-section);letter-spacing:var(--tracking-heading);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:700}.hero-panel p{font-size:var(--type-card);font-weight:600;margin:8px 0 18px;line-height:var(--leading-heading);font-weight:600}.actions{display:flex;justify-content:center;align-items:center;gap:24px}.button{display:inline-flex;justify-content:center;align-items:center;padding:var(--ui-control-padding-y) var(--ui-control-padding-x);border-radius:var(--ui-radius-button);background:var(--color-action);color:var(--color-on-action);font-size:var(--type-button);line-height:1.4;font-weight:600;min-height:var(--ui-control-height)}.button:hover{background:var(--color-action-hover);text-decoration:none;color:var(--color-on-action)}.button.small{padding:var(--ui-control-padding-y) var(--space-4);font-size:var(--type-note);line-height:var(--leading-body);border-radius:var(--ui-radius-button);min-height:var(--ui-control-height)}.text-link{color:var(--color-link);font-size:var(--type-button);line-height:1.4;font-weight:600;display:inline-flex;align-items:center;gap:var(--ui-icon-gap);min-height:var(--ui-control-height)}.text-link::after{content:var(--ui-link-chevron);display:inline}.book-stage{height:430px;display:flex;justify-content:center;align-items:flex-end;gap:42px;perspective:1400px;margin-top:35px}.book-stage img{width:230px;height:326px;object-fit:cover;box-shadow:15px 22px 30px #17272d22;transition:transform .6s;transform:rotateY(-12deg) rotate(-5deg)}.book-stage img:nth-child(2){width:262px;height:371px;transform:translateY(-10px);z-index:2}.book-stage img:nth-child(3){transform:rotateY(12deg) rotate(5deg)}.hero-panel:hover .book-stage img{transform:translateY(-8px)}.hero-trend{background:linear-gradient(135deg,#f0ffbf,#f7ffd9 40%,#ecf7e8)}.hero-trend .book-stage{height:413px;margin-top:16px}.hero-trend .book-stage img{width:258px;height:365px;transform:rotate(-7deg);object-fit:cover}.rail-controls{display:flex;justify-content:flex-end;align-items:center;gap:16px;width:var(--width);margin:26px auto 0}.round{width:var(--ui-control-height);height:var(--ui-control-height);border-radius:var(--ui-radius-round);background:#e8e8ed;color:#333336;font-size:26px;line-height:1}.rail-count{font-size:var(--type-note);color:var(--muted);margin-right:auto;line-height:var(--leading-body)}.section{padding:var(--section-space) 0}.section.alt{background:var(--gray)}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:var(--content-gap)}.section-heading h2,.large-heading{font-size:var(--type-section);line-height:var(--leading-heading);letter-spacing:var(--tracking-heading);font-weight:700;font-family:var(--font-display);font-weight:700}.feature-rail{display:flex;gap:22px;overflow-x:auto;padding:5px 6.25vw 20px;scroll-snap-type:x mandatory;scrollbar-width:none}.feature-card{position:relative;flex:0 0 372px;min-height:630px;border-radius:var(--ui-radius-card);overflow:hidden;padding:32px;scroll-snap-align:start;background:#edf1f7;text-align:left;transition:transform .35s}.feature-card:hover{transform:none}.feature-card .eyebrow{font-size:var(--type-note);font-weight:650;margin-bottom:12px;line-height:var(--leading-body)}.feature-card h3{font-size:var(--type-card);line-height:var(--leading-heading);letter-spacing:var(--tracking-heading);font-weight:600}.feature-card .feature-cover{position:absolute;width:260px;left:56px;top:253px;box-shadow:12px 18px 25px #0002;transform:rotate(-8deg)}.feature-card.dark{background:#101c39;color:white}.feature-card.lime{background:#dbfba8}.feature-card.gray{background:#f5f5f7}.feature-card .number-art{font-size:170px;letter-spacing:-10px;font-weight:750;line-height:1;position:absolute;bottom:116px;left:26px;color:#235cc5}.feature-card.dark .number-art{color:#8caef1}.feature-card .number-note{position:absolute;bottom:85px;font-size:var(--type-note);left:36px;line-height:var(--leading-body)}.feature-card .step-list{position:absolute;top:280px;left:32px;right:32px;display:grid;gap:12px}.step-list span{border-radius:var(--ui-radius-small);background:#fff9;padding:16px;font-size:var(--type-body);line-height:var(--leading-body)}.plus{position:absolute;bottom:20px;right:20px;width:var(--ui-control-height);height:var(--ui-control-height);border-radius:var(--ui-radius-round);display:grid;place-items:center;font-size:28px;background:#333336;color:white}.lineup-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:44px}.segmented{display:flex;gap:4px;background:#e8e8ed;padding:4px;border-radius:var(--ui-radius-card);width:max-content;max-width:100%;flex-wrap:wrap}.segmented button{padding:11px 22px;border-radius:var(--ui-radius-selection);font-size:var(--type-button);background:transparent;color:var(--ink);line-height:1.4;font-weight:600;min-height:var(--ui-control-height)}.segmented button[aria-pressed=true]{background:var(--color-selection-surface);box-shadow:var(--ui-shadow-selection);color:var(--color-selection-text)}.subject-select{border:0;border-bottom:1px solid #b8b8bc;background:transparent;padding:10px 28px 10px 4px;font-size:var(--type-note);line-height:var(--leading-body);min-height:var(--ui-control-height)}.books-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:44px 24px}.book-card{text-align:center;min-width:0;padding-bottom:32px}.book-card[hidden]{display:none}.cover-wrap{height:280px;display:flex;justify-content:center;align-items:center;margin-bottom:28px}.cover-wrap img{height:100%;width:auto;max-width:100%;object-fit:contain;filter:drop-shadow(4px 8px 8px #0001);transition:transform .3s}.cover-wrap:hover img{transform:scale(1.045)}.book-card .badge{font-size:var(--type-note);color:#b64400;height:22px;line-height:var(--leading-body)}.book-card h3{font-size:var(--type-card);line-height:var(--leading-heading);letter-spacing:var(--tracking-heading);font-weight:600}.book-card p{font-size:var(--type-note);color:var(--muted);margin:12px 0 20px;line-height:var(--leading-body)}.book-card .actions{gap:14px}.book-card .text-link{font-size:var(--type-button);line-height:1.4;font-weight:600}.book-spec{border-top:1px solid var(--line);margin-top:32px;padding-top:25px;font-size:var(--type-note);line-height:var(--leading-body)}.book-spec strong{display:block;font-size:var(--type-card);margin-bottom:5px;line-height:var(--leading-heading);font-weight:600}.result-count{font-size:var(--type-note);color:var(--muted);margin-top:24px;line-height:var(--leading-body)}.benefit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--card-gap)}.benefit{background:transparent;border-radius:0;padding:var(--card-padding);min-height:290px;color:var(--color-text-primary);box-shadow:none;border-top:1px solid var(--color-border)}.benefit .symbol{font-size:34px;margin-bottom:22px}.benefit h3{font-size:var(--type-card);letter-spacing:var(--tracking-heading);margin-bottom:16px;line-height:var(--leading-heading);font-weight:600}.benefit p{color:var(--muted);font-size:var(--type-body);line-height:var(--leading-body)}.benefit a{display:inline-block;margin-top:22px}.wide-banner{display:flex;align-items:center;justify-content:center;gap:10%;border-radius:var(--ui-radius-container);background:#f5f5f7;padding:70px;overflow:hidden;min-height:530px}.wide-banner h3{font-size:var(--type-card);letter-spacing:var(--tracking-heading);line-height:var(--leading-heading);margin-bottom:25px;font-weight:600}.wide-banner img{width:230px;transform:rotate(7deg);box-shadow:14px 20px 35px #0002}.wide-banner p{color:var(--muted);font-size:var(--type-card);margin:0 0 25px;max-width:440px;line-height:var(--leading-heading);font-weight:600}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:90px}.faq-grid h2{font-size:var(--type-section);line-height:var(--leading-heading);letter-spacing:var(--tracking-heading);font-family:var(--font-display);font-weight:700}.faq details{border-bottom:1px solid var(--line);padding:26px 0}.faq summary{cursor:pointer;font-size:var(--type-card);font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:20px;line-height:var(--leading-heading);font-weight:600}.faq summary::after{content:'+';font-size:24px}.faq details[open] summary::after{content:'−'}.faq details p{color:var(--muted);font-size:var(--type-note);margin-top:20px;line-height:var(--leading-body)}.footer{background:var(--color-surface);padding:40px 0 25px;font-size:var(--type-note);color:var(--color-text-muted);line-height:var(--leading-body)}.footer-inner{max-width:980px;margin:auto;padding:0 24px}.footer-note{line-height:1.6;border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:22px}.breadcrumbs{margin-bottom:26px}.footer-columns{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:35px}.footer-columns h3{font-size:var(--type-note);color:var(--color-text-primary);margin-bottom:14px;line-height:var(--leading-body);font-weight:600}.footer-columns a{display:block;margin-bottom:12px}.footer-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:20px}.localnav{position:sticky;top:0;background:#ffffffdb;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid #0002;z-index:30;height:56px}.localnav-inner{max-width:980px;padding:0 24px;height:100%;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}.localnav strong{font-size:var(--type-body);letter-spacing:normal;line-height:var(--leading-body)}.localnav-links{display:flex;align-items:center;gap:24px;font-size:var(--type-note);line-height:var(--leading-body)}.trend-page{--accent:#97d900}.trend-hero{text-align:center;overflow:hidden;padding:70px 20px 90px;background:linear-gradient(180deg,#fff 65%,#f5f5f7)}.trend-hero .eyebrow{font-size:var(--type-note);font-weight:650;margin-bottom:22px;line-height:var(--leading-body)}.trend-hero h1{font-size:var(--type-title);line-height:var(--leading-heading);letter-spacing:var(--tracking-heading);max-width:1000px;margin:0 auto;font-family:var(--font-display);font-weight:800}.trend-hero .hero-caption{font-size:var(--type-lead);color:var(--muted);margin:25px 0;line-height:var(--leading-body)}.trend-hero .hero-cover{height:520px;width:auto;margin:60px auto 42px;box-shadow:15px 30px 45px #15230924;transform:rotate(-7deg);transition:transform .9s}.trend-hero .hero-cover:hover{transform:rotate(0deg)}.trend-hero .availability{font-size:var(--type-note);color:var(--muted);margin-top:18px;line-height:var(--leading-body)}.trend-highlights .feature-card{flex-basis:440px;min-height:540px}.trend-highlights .number-art{font-size:180px;bottom:100px;color:#427500}.trend-highlights .feature-card.dark .number-art{color:#c0fa45}.trend-story{text-align:center;padding:var(--section-space) 0}.trend-story .eyebrow{font-size:var(--type-note);font-weight:600;margin-bottom:24px;color:#6e6e73;line-height:var(--leading-body)}.trend-story h2{font-size:var(--type-section);letter-spacing:var(--tracking-heading);line-height:var(--leading-heading);margin-bottom:35px;font-family:var(--font-display);font-weight:700}.trend-story .intro{font-size:var(--type-card);line-height:var(--leading-heading);color:var(--muted);max-width:800px;margin:0 auto 70px;font-weight:600}.trend-story .intro strong{color:var(--ink)}.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;max-width:850px;margin:0 auto 70px}.metric-row strong{font-size:var(--type-metric);letter-spacing:var(--tracking-heading);line-height:var(--leading-heading);display:block;font-family:var(--font-display);font-weight:700}.metric-row span{font-size:var(--type-body);color:var(--muted);display:block;margin-top:14px;line-height:var(--leading-body)}.curriculum-panel{max-width:1050px;margin:0 auto;background:var(--gray);padding:var(--card-padding);border-radius:var(--ui-radius-container);text-align:left}.curriculum-panel h3{font-size:var(--type-card);margin-bottom:28px;line-height:var(--leading-heading);font-weight:600}.day-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin:30px 0}.day-grid button{border-radius:var(--ui-radius-selection);background:white;border:2px solid transparent;padding:20px 12px;font-size:var(--type-button);line-height:1.4;font-weight:600}.day-grid button strong{display:block;font-size:var(--type-button);margin-bottom:8px;line-height:1.4;font-weight:600}.day-grid button[aria-pressed=true]{border-color:var(--color-selected);background:var(--color-selection-surface)}.day-detail{padding:28px;background:white;border-radius:18px;min-height:120px}.day-detail h4{margin:0 0 12px;font-size:var(--type-card);line-height:var(--leading-heading);font-weight:600}.day-detail p{color:var(--muted);font-size:var(--type-note);line-height:var(--leading-body)}.method-section{background:#101010;color:white;padding:var(--section-space) 0}.method-section .intro{color:#a1a1a6}.method-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--card-gap);text-align:left}.method-grid article{background:transparent;border-radius:0;padding:var(--card-padding);min-height:265px;box-shadow:none;border-top:1px solid var(--color-border)}.method-grid .step{font-size:var(--type-body);color:#bef344;font-weight:650;margin-bottom:22px;line-height:var(--leading-body)}.method-grid h3{font-size:var(--type-card);letter-spacing:var(--tracking-heading);margin-bottom:20px;line-height:var(--leading-heading);font-weight:600}.method-grid p{font-size:var(--type-card);color:#a1a1a6;line-height:var(--leading-heading);font-weight:600}.specs-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:100px;align-items:center}.specs-grid img{max-height:500px;width:auto;margin:auto;box-shadow:10px 20px 30px #0002}.specs-grid h2{font-size:var(--type-section);letter-spacing:var(--tracking-heading);margin-bottom:32px;line-height:var(--leading-heading);font-family:var(--font-display);font-weight:700}.spec-table{margin:0}.spec-table div{display:grid;grid-template-columns:130px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid var(--line);font-size:var(--type-body);line-height:var(--leading-body)}.spec-table dt{font-weight:650}.spec-table dd{margin:0;color:var(--muted);line-height:1.6}.specs-grid .actions{justify-content:flex-start;margin-top:32px}.dialog{border:0;border-radius:var(--ui-radius-container);padding:0;max-width:850px;width:calc(100% - 40px);max-height:90vh;max-height:90svh;color:var(--ink);box-shadow:var(--ui-shadow-overlay)}.dialog::backdrop{background:#0007;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.dialog-content{padding:60px}.dialog-close{position:absolute;right:18px;top:18px;background:#e8e8ed;border-radius:var(--ui-radius-round);font-size:26px;width:var(--ui-control-height);height:var(--ui-control-height);z-index:1}.dialog h2{font-size:var(--type-section);letter-spacing:var(--tracking-heading);margin-bottom:25px;line-height:var(--leading-heading);font-family:var(--font-display);font-weight:700}.dialog p{font-size:var(--type-card);color:var(--muted);margin:18px 0;line-height:var(--leading-heading);font-weight:600}.dialog img{max-height:420px;width:auto;margin:25px auto}.dialog .actions{justify-content:flex-start}.search-input{width:100%;border:0;border-bottom:1px solid var(--line);padding:15px 0;font-size:var(--type-card);outline-offset:3px;line-height:var(--leading-heading);font-weight:600}.search-results{list-style:none;padding:15px 0 0}.search-results a{display:block;padding:14px 0;border-bottom:1px solid #eee;font-size:var(--type-body);line-height:var(--leading-body)}.mobile-menu{display:none}.preview-launcher{max-width:960px;margin:100px auto;padding:0 24px}.preview-launcher h1{font-size:var(--type-title);letter-spacing:var(--tracking-heading);margin-bottom:15px;line-height:var(--leading-heading);font-family:var(--font-display);font-weight:800}.preview-launcher p{color:var(--muted);font-size:var(--type-card);line-height:var(--leading-heading);font-weight:600}.preview-links{display:grid;grid-template-columns:1fr 1fr;gap:var(--card-gap);margin-top:50px}.preview-links a{display:block;padding:30px;border-radius:var(--ui-radius-card);background:var(--gray)}.preview-links strong{display:block;font-size:var(--type-card);margin-bottom:14px;line-height:var(--leading-heading);font-weight:600}.preview-links span{font-size:var(--type-note);color:var(--muted);line-height:var(--leading-body)}
@media(min-width:1700px){.hero-panel{min-width:1440px;border-radius:var(--ui-radius-container)}.hero-rail{padding-left:calc((100vw - 1440px)/2);padding-right:calc((100vw - 1440px)/2)}}
@media(max-width:1100px){.global-inner{gap:20px}.desktop-nav{gap:15px}.desktop-nav a{font-size:var(--type-note);line-height:var(--leading-body)}.page-title{font-size:var(--type-title);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:800}.section-heading h2,.large-heading{font-size:var(--type-section);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:700}.books-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.feature-card{flex-basis:330px;min-height:590px;border-radius:var(--ui-radius-card)}.wide-banner{padding:50px;gap:60px;border-radius:var(--ui-radius-container)}.wide-banner h3{font-size:var(--type-card);line-height:var(--leading-heading);font-weight:600}.faq-grid{gap:50px}.specs-grid{gap:60px}.hero-panel{height:660px;border-radius:var(--ui-radius-container)}}
@media(max-width:760px){:root{--width:min(calc(100% - 2 * var(--page-gutter)),var(--content-max))}:root{--global-header-height:52px}.global-header{height:var(--global-header-height)}.global-inner{justify-content:flex-start;gap:22px}.wordmark{margin-right:auto}.desktop-nav{display:none}.mobile-toggle{display:grid}.mega{display:none!important}.mobile-menu.open{display:flex;flex-direction:column;gap:24px;position:absolute;top:var(--global-header-height);left:0;right:0;background:#fafafc;padding:36px 6.25vw 50px;box-shadow:0 35px 45px #0001}.mobile-menu a{font-size:var(--type-card);font-weight:600;line-height:var(--leading-heading);font-weight:600}.ribbon{font-size:var(--type-note);padding:14px 24px;line-height:var(--leading-body)}.page-title{font-size:var(--type-title);letter-spacing:var(--tracking-heading);padding:48px 0 35px;line-height:var(--leading-heading);font-family:var(--font-display);font-weight:800}.chapter-nav{gap:25px;padding-bottom:30px}.chapter-nav a{flex-basis:64px}.chapter-nav img{height:55px;width:40px}.chapter-nav .nav-symbol{height:55px}.hero-panel{height:610px;padding:36px 20px 0;border-radius:var(--ui-radius-container)}.hero-panel h2{font-size:var(--type-section);letter-spacing:var(--tracking-heading);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:700}.hero-panel p{font-size:var(--type-card);margin:10px 0 20px;line-height:var(--leading-heading);font-weight:600}.button{font-size:var(--type-button);padding:var(--ui-control-padding-y) var(--ui-control-padding-x);line-height:1.4;font-weight:600;background:var(--color-action);color:var(--color-on-action);border-radius:var(--ui-radius-button);min-height:var(--ui-control-height)}.text-link{font-size:var(--type-button);line-height:1.4;font-weight:600;color:var(--color-link);display:inline-flex;align-items:center;gap:var(--ui-icon-gap);min-height:var(--ui-control-height)}.book-stage{gap:14px;margin-top:60px;height:325px}.book-stage img{width:30%;height:auto;max-height:235px}.book-stage img:nth-child(2){width:38%;height:auto;max-height:280px}.hero-trend .book-stage{height:365px;margin-top:35px}.hero-trend .book-stage img{width:218px;height:310px}.rail-controls{margin-top:18px}.section{padding:var(--section-space) 0}.section-heading{display:block;margin-bottom:var(--content-gap)}.section-heading h2,.large-heading{font-size:var(--type-section);letter-spacing:var(--tracking-heading);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:700}.section-heading a{display:inline-block;margin-top:20px}.feature-rail{gap:16px}.feature-card{flex-basis:80vw;min-height:560px;padding:28px;border-radius:var(--ui-radius-card)}.feature-card h3{font-size:var(--type-card);line-height:var(--leading-heading);font-weight:600}.feature-card .feature-cover{width:230px;left:calc(50% - 115px);top:245px}.feature-card .number-art{font-size:140px}.books-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:38px 18px}.cover-wrap{height:200px;margin-bottom:22px}.book-card h3{font-size:var(--type-card);line-height:var(--leading-heading);font-weight:600}.book-card .actions{flex-direction:column;gap:15px}.book-card p{font-size:var(--type-note);line-height:var(--leading-body)}.book-spec{font-size:var(--type-note);line-height:var(--leading-body)}.book-spec strong{font-size:var(--type-body);line-height:var(--leading-body)}.segmented button{padding:10px 13px;font-size:var(--type-button);line-height:1.4;font-weight:600;border-radius:var(--ui-radius-selection);min-height:var(--ui-control-height)}.benefit-grid{grid-template-columns:1fr}.benefit{min-height:230px;padding:var(--card-padding);background:transparent;color:var(--color-text-primary);border-radius:0;box-shadow:none;border-top:1px solid var(--color-border)}.benefit h3{font-size:var(--type-card);line-height:var(--leading-heading);font-weight:600}.wide-banner{flex-direction:column;text-align:center;padding:44px 25px;gap:40px;border-radius:var(--ui-radius-container)}.wide-banner h3{font-size:var(--type-card);line-height:var(--leading-heading);font-weight:600}.wide-banner p{font-size:var(--type-body);line-height:var(--leading-body)}.wide-banner img{width:190px}.faq-grid{grid-template-columns:1fr;gap:25px}.faq-grid h2{font-size:var(--type-section);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:700}.faq summary{font-size:var(--type-body);line-height:var(--leading-body)}.footer-columns{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column}.localnav strong{font-size:var(--type-body);line-height:var(--leading-body)}.localnav-links{gap:15px}.localnav-links .desktop{display:none}.localnav-inner{padding:0 6.25vw;gap:8px}.trend-hero{padding:55px 6.25vw 65px}.trend-hero .eyebrow{font-size:var(--type-note);line-height:var(--leading-body)}.trend-hero h1{font-size:var(--type-title);letter-spacing:var(--tracking-heading);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:800}.trend-hero .hero-caption{font-size:var(--type-lead);line-height:var(--leading-body)}.trend-hero .hero-cover{height:380px;margin:55px auto 40px}.trend-highlights .feature-card{flex-basis:82vw;min-height:510px}.trend-highlights .number-art{font-size:150px}.trend-story{padding:var(--section-space) 0}.trend-story .eyebrow{font-size:var(--type-note);line-height:var(--leading-body)}.trend-story h2{font-size:var(--type-section);letter-spacing:var(--tracking-heading);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:700}.trend-story .intro{font-size:var(--type-card);margin-bottom:45px;line-height:var(--leading-heading);font-weight:600}.metric-row{gap:12px;margin-bottom:45px}.metric-row strong{font-size:var(--type-metric);letter-spacing:var(--tracking-heading);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:700}.metric-row span{font-size:var(--type-note);line-height:var(--leading-body)}.curriculum-panel{padding:var(--card-padding);border-radius:var(--ui-radius-container)}.curriculum-panel h3{font-size:var(--type-card);line-height:var(--leading-heading);font-weight:600}.day-grid{grid-template-columns:repeat(2,1fr)}.day-grid button{padding:15px 10px;border-radius:var(--ui-radius-selection)}.day-grid button strong{font-size:var(--type-button);line-height:1.4;font-weight:600}.day-detail{padding:22px}.day-detail h4{font-size:var(--type-card);line-height:var(--leading-heading);font-weight:600}.method-section{padding:var(--section-space) 0}.method-grid{grid-template-columns:1fr}.method-grid article{padding:var(--card-padding);min-height:240px;border-radius:0;box-shadow:none;background:transparent;border-top:1px solid var(--color-border)}.method-grid h3{font-size:var(--type-card);line-height:var(--leading-heading);font-weight:600}.method-grid p{font-size:var(--type-body);line-height:var(--leading-body)}.specs-grid{grid-template-columns:1fr;gap:55px}.specs-grid img{height:360px}.specs-grid h2{font-size:var(--type-section);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:700}.spec-table div{grid-template-columns:95px 1fr;font-size:var(--type-note);gap:15px;line-height:var(--leading-body)}.dialog-content{padding:60px 28px 35px}.dialog h2{font-size:var(--type-section);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:700}.dialog p{font-size:var(--type-body);line-height:var(--leading-body)}.preview-launcher{margin:60px auto}.preview-launcher h1{font-size:var(--type-title);line-height:var(--leading-heading);font-family:var(--font-display);font-weight:800}.preview-links{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.book-stage img,.hero-cover{transform:none!important}}
/* Typography: vivid content, restrained interface. Keep text solid; image/card shadows are independent. */
:where(body,h1,h2,h3,h4,h5,h6,p,a,button,label,summary,small,strong,span,li,dt,dd,th,td){text-shadow:none;-webkit-text-stroke-width:0}
.wordmark{display:flex;align-items:center}/* 로고 속 글자(원본 250px 중 114–200px)의 중심을 메뉴 글자 중심에 맞춘다: 이미지 중심보다 12.8% 아래에 있는 만큼 올린다. */
.wordmark img{display:block;height:26px;width:auto;mix-blend-mode:multiply;transform:translateY(-12.8%)}

/* 상단 메뉴: 항목마다 같은 너비의 칸 — 교재패스~학습 지원이 균등 간격, 로고와 첫 항목 사이에도 반 칸 여백 */
@media(min-width:761px){.desktop-nav{display:grid;grid-auto-flow:column;grid-template-columns:repeat(6,1fr);justify-items:center;column-gap:0;margin-left:12px}}

/* 로컬 내비 양끝을 글로벌 로고와 마지막 메뉴 아이콘에 맞춘다. */
:root{--site-header-width:1060px}
.localnav-inner{max-width:var(--site-header-width);padding-left:22px;padding-right:calc(22px + (var(--ui-control-height) - var(--ui-icon-size))/2)}

/* 모바일 공용 기반(2026-10-28): 아이폰·갤럭시 기본 브라우저와 인스타그램·네이버·카카오톡 인앱 대비.
   크롬 계열 강제 다크 반전 방지(light만으로는 안 멈추고 only가 있어야 한다. 삼성 인터넷 자체 다크 모드는 웹에서 끌 수 없다), 가로 회전 시 글자 확대 방지,
   좁은 화면에서 긴 낱말이 화면 밖으로 나가지 않게 줄바꿈, 흐림 미지원 브라우저의 상단 내비 배경. */
:root{color-scheme:only light}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{overflow-wrap:break-word}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.localnav{background:#fffffff2}}.footer-business{border-bottom:0;margin-bottom:0}
/* 짧은 확인창(수능직전 1회 「오픈 예정」, 준비 중인 시리즈 링크 「준비 중입니다」). home.css에서 사이트 공통으로 옮김(2026-10-28). csat-final.css는 같은 틀에 글자색만 페이지 값. */
.cf-why-dialog{border:0;padding:0;border-radius:var(--ui-radius-container);background:#fff;color:var(--color-text-primary);max-height:calc(100vh - 32px);max-height:calc(100dvh - 32px);overflow:auto}
.cf-why-dialog::backdrop{background:#000000b3}
html.cf-why-lock{overflow:hidden}
.cf-alert-dialog{width:min(360px,100vw - 48px)}
.cf-alert-body{padding:32px 28px 24px;text-align:center}
.cf-alert-title{font-size:var(--type-card);font-weight:700;line-height:var(--leading-heading);word-break:keep-all}
.cf-alert-body .button{margin-top:24px;min-width:120px}
/* 구매 중간 안내(/go/<시리즈>/·/go/pass/, build_series_gate.py): 2.5초 안내 후 시대인재북스로 옮긴다. 「알겠어요」는 바로 이동. */
.buy-go{min-height:100vh;min-height:100svh;display:grid;place-items:center;margin:0;background:var(--color-background);color:var(--color-text-primary)}
.buy-go-main{width:min(100% - 32px,440px);text-align:center}
.buy-go-logo{display:block;width:120px;height:auto;margin:0 auto 36px}
.buy-go-message{margin:0;font-size:var(--type-body);line-height:1.7;word-break:keep-all}
.buy-go-main .button{margin-top:28px;min-width:140px}
.buy-go-bar{width:160px;height:3px;margin:24px auto 0;border-radius:3px;background:var(--color-border);overflow:hidden}
.buy-go-bar span{display:block;height:100%;background:var(--color-text-primary);transform-origin:left;animation:buy-go 2.5s linear forwards}
@keyframes buy-go{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@media(prefers-reduced-motion:reduce){.buy-go-bar span{animation:none}}