@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-border-style:solid;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-outline-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-backdrop-blur:initial;--tw-backdrop-brightness:initial;--tw-backdrop-contrast:initial;--tw-backdrop-grayscale:initial;--tw-backdrop-hue-rotate:initial;--tw-backdrop-invert:initial;--tw-backdrop-opacity:initial;--tw-backdrop-saturate:initial;--tw-backdrop-sepia:initial;--tw-ease:initial}}}@layer theme{:root,:host{--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--ease-out:cubic-bezier(0, 0, .2, 1);--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:Arial,Helvetica,sans-serif;--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.collapse{visibility:collapse}.invisible{visibility:hidden}.visible{visibility:visible}.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.sticky{position:sticky}.isolate{isolation:isolate}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.block{display:block}.contents{display:contents}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline{display:inline}.table{display:table}.shrink{flex-shrink:1}.grow{flex-grow:1}.border-collapse{border-collapse:collapse}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.resize{resize:both}.flex-wrap{flex-wrap:wrap}.rounded{border-radius:.25rem}.border{border-style:var(--tw-border-style);border-width:1px}.overline{text-decoration-line:overline}.underline{text-decoration-line:underline}.shadow{--tw-shadow:0 1px 3px 0 var(--tw-shadow-color,#0000001a), 0 1px 2px -1px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.ring{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.blur{--tw-blur:blur(8px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.invert{--tw-invert:invert(100%);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.backdrop-filter{-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.ease-out{--tw-ease:var(--ease-out);transition-timing-function:var(--ease-out)}}:root{--paper:#f8f8f2;--ink:#243d32;--muted:#72776d;--green:#234c3a;--line:#dddfd5;--lime:#d8eaa8;--serif:Georgia,"Times New Roman",serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font:14px Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a{touch-action:manipulation;transition:background .2s,color .2s,box-shadow .2s,transform .2s}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline-offset:5px;outline:3px solid #739e52}::selection{background:var(--lime);color:var(--ink)}h1,h2,h3,p{margin-top:0}h1,h2{font-family:var(--serif);font-weight:400}h2{letter-spacing:-1.7px;margin-bottom:20px;font-size:46px;line-height:1.13}h2 em,h1 em{color:#738d5b;font-weight:400}h3{letter-spacing:-.4px;font-size:19px;font-weight:600;line-height:1.3}p{line-height:1.75}.container{max-width:1200px;margin:auto;padding:0 40px}.button{background:var(--green);color:#fff;border:1px solid var(--green);border-radius:5px;justify-content:center;align-items:center;gap:17px;min-height:50px;padding:16px 23px;font-size:13px;font-weight:600;line-height:1.2;display:inline-flex}.button:hover{background:#183b2c;transform:translateY(-1px);box-shadow:0 4px 12px #234c3a18}.button-small{min-height:39px;padding:11px 17px;font-size:12px}.button-outline{color:var(--green);background:0 0;border-color:#b9c3b3}.button-outline:hover{background:#e9eddf}.button-text{color:var(--ink);background:0 0;border-color:#0000;padding-left:10px;padding-right:10px}.button-text:hover{box-shadow:none;background:#edf0e5}.button-lime{background:var(--lime);border-color:var(--lime);color:var(--green)}.button-lime:hover{background:#e3efc6}.icon-button{background:0 0;border:0;border-radius:4px;justify-content:center;align-items:center;padding:10px;display:inline-flex}.icon-button:hover{background:#e9eddf}.eyebrow{letter-spacing:1.8px;margin-bottom:18px;font:600 10px/1.6 Arial,sans-serif;display:block}.live-dot{background:#719450;border-radius:50%;flex-shrink:0;width:6px;height:6px;display:inline-block}.text-link{border-bottom:1px solid #bac6b3;align-items:center;gap:9px;padding-bottom:5px;font-size:12px;font-weight:600;display:inline-flex}.site-header{z-index:30;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#f8f8f2f5;border-bottom:1px solid #e4e5dc;position:sticky;top:0}.nav-inner{justify-content:space-between;align-items:center;gap:28px;height:83px;display:flex}.brand{letter-spacing:-1px;white-space:nowrap;align-items:center;gap:10px;font-size:22px;font-weight:700;display:inline-flex}.brand-light{font-weight:400}.brand-dot{color:#84a666}.brand-mark{align-items:flex-end;gap:3px;height:24px;display:flex;transform:skew(-15deg)}.brand-mark span{background:var(--green);width:5px;height:16px;display:block}.brand-mark span:nth-child(2){height:24px}.brand-mark span:nth-child(3){background:#8aa671;height:19px}.main-nav{color:#5e665b;gap:25px;font-size:11px;display:flex}.main-nav a:hover{color:#1e4f35}.nav-actions{align-items:center;gap:24px;display:flex}.sign-in{white-space:nowrap;align-items:center;gap:5px;font-size:12px;display:flex}.menu-toggle{display:none}.hero{position:relative;overflow:hidden}.hero-grid{grid-template-columns:1.09fr 1fr;align-items:center;gap:40px;min-height:668px;padding-top:60px;padding-bottom:60px;display:grid}.pill{letter-spacing:1.2px;background:#eef0e5;border:1px solid #dce1cf;border-radius:30px;align-items:center;gap:9px;margin-bottom:25px;padding:8px 12px;font-size:9px;font-weight:600;display:inline-flex}.hero h1{letter-spacing:-3px;margin:0 0 24px;font-size:66px;line-height:1.06}.hero-description{color:#707568;max-width:440px;margin-bottom:28px;font-size:14px;line-height:1.9}.hero-actions{align-items:center;gap:16px;display:flex}.hero-assurance{color:#7b8074;gap:16px;margin-top:21px;font-size:9px;display:flex}.hero-assurance span{align-items:center;gap:5px;display:flex}.hero-assurance svg{color:#729058}.hero-visual{isolation:isolate;height:520px;position:relative}.hero-visual:before{content:"";z-index:-1;background:radial-gradient(#e8ecdc 0%,#f1f2e7 45%,#0000 69%);border-radius:50%;position:absolute;inset:30px -50px 35px -30px}.visual-note{letter-spacing:2px;color:#8c927d;align-items:center;gap:10px;font-size:8px;display:flex;position:absolute}.note-top{top:0;left:80px;transform:rotate(-3deg)}.note-bottom{bottom:0;left:90px}.book{border-radius:2px 7px 7px 2px;position:absolute;box-shadow:14px 20px 30px #263d3024,inset 6px 0 7px #0002,inset -2px 0 2px #fff3}.book-front{color:#e6ecd9;z-index:2;background:#264d3c;border-left:7px solid #173d2b;width:286px;height:402px;padding:23px 22px 15px;top:53px;left:31px;transform:rotate(-8deg)}.book-front:after{content:"";z-index:-1;background:repeating-linear-gradient(#dfdfcf 0 1px,#f8f7ec 1px 3px);border-radius:0 4px 4px 0;width:5px;position:absolute;top:5px;bottom:2px;right:-5px}.book-top{letter-spacing:1.3px;border-bottom:1px solid #ffffff36;justify-content:space-between;padding-bottom:13px;font-size:7px;line-height:1.6;display:flex}.book-title{padding-top:23px}.book-title>span{letter-spacing:1.8px;color:#bed39d;font-size:7px}.book-title h2{letter-spacing:-.4px;color:#f5f3df;margin:10px 0;font-size:32px;line-height:1.08}.book-title p{color:#d1dac3;font-size:9px;line-height:1.6}.engineering-art{color:#c3d59b;width:100%;height:160px;margin-top:-7px}.book-bottom{letter-spacing:1px;border-top:1px solid #ffffff36;justify-content:space-between;align-items:center;padding-top:8px;font-size:6px;display:flex}.book-bottom>span:last-child{font-family:var(--serif);font-size:21px}.book-back{color:#597256;background:#e4e6d3;border-left:5px solid #c6c9b1;width:258px;height:366px;padding:28px 22px;top:44px;right:5px;transform:rotate(11deg)}.book-back>span:first-child{letter-spacing:1px;font-size:6px}.book-back>b{font-family:var(--serif);margin-top:34px;font-size:27px;font-weight:400;line-height:1.1;display:block}.book-back-number{font-family:var(--serif);font-size:30px;position:absolute;bottom:20px;right:20px}.back-orbits{height:140px;margin-top:20px;position:relative}.back-orbits i{border:1px solid #8ca17a;border-radius:50%;width:120px;height:70px;position:absolute;top:25px;left:50px;transform:rotate(40deg)}.back-orbits i:nth-child(2){transform:rotate(100deg)}.back-orbits i:nth-child(3){transform:rotate(160deg)}.floating-note{z-index:3;background:#fffdf6;border:1px solid #e3e6d8;border-radius:7px;align-items:center;gap:13px;padding:16px 18px;display:flex;position:absolute;bottom:31px;right:-5px;transform:rotate(2deg);box-shadow:0 10px 25px #223d3010}.floating-icon{color:#5b784a;background:#edf1e5;border-radius:5px;padding:10px}.floating-note strong{margin-bottom:5px;font-size:12px;display:block}.floating-note div>span{color:#858779;font-size:9px}.floating-note>svg{color:#8c9a7b;margin-left:10px}.stats-bar{border-block:1px solid var(--line);background:#f1f3e9}.stats-inner{grid-template-columns:repeat(4,1fr);padding-top:30px;padding-bottom:30px;display:grid}.stats-inner>div{border-left:1px solid #d7ddce;align-items:center;gap:17px;padding-left:28px;display:flex}.stats-inner>div:first-child{border:0;padding-left:0}.stats-inner strong{font-family:var(--serif);letter-spacing:-1px;font-size:35px;font-weight:400}.stats-inner span{color:#747c69;max-width:110px;font-size:10px;line-height:1.6}.section{padding:88px 0}.section-heading{justify-content:space-between;align-items:flex-end;gap:50px;margin-bottom:38px;display:flex}.section-heading h2{margin-bottom:0}.section-heading>p{color:#72786d;max-width:300px;margin-bottom:4px;font-size:12px;line-height:1.9}.catalog-toolbar{border-top:1px solid var(--line);justify-content:space-between;align-items:center;padding:21px 0;display:flex}.catalog-label{color:#68745f;align-items:center;gap:9px;font-size:11px;display:flex}.search-box{color:#798571;border:1px solid var(--line);background:#fff9;border-radius:4px;align-items:center;gap:9px;padding:9px 11px;display:flex}.search-box input{width:155px;color:var(--ink);background:0 0;border:0;outline:0;font-size:11px}.search-box input::placeholder{color:#90958a}.subject-grid{grid-template-columns:repeat(4,1fr);gap:16px;display:grid}.subject-card{background:#fffefa;border:1px solid #e2e4d9;border-radius:7px;flex-direction:column;min-height:284px;padding:23px 20px 0;transition:transform .2s,box-shadow .2s;display:flex}.subject-card:hover{border-color:#c5d0b5;transform:translateY(-4px);box-shadow:0 12px 25px #263d3009}.subject-card-top{justify-content:space-between;align-items:center;margin-bottom:25px;display:flex}.subject-icon{color:#5a7055;border-radius:7px;justify-content:center;align-items:center;width:44px;height:44px;display:inline-flex}.chapter-number{letter-spacing:1.4px;color:#8a8e7f;font-size:7px;font-weight:600}.subject-card h3{max-width:180px;min-height:47px;margin-bottom:10px;font-size:18px;line-height:1.3}.subject-card>p{color:#808373;min-height:52px;margin-bottom:17px;font-size:10px;line-height:1.8}.subject-meta{color:#7d8272;align-items:center;gap:12px;margin-top:auto;padding-bottom:18px;font-size:9px;display:flex}.subject-meta span{align-items:center;gap:5px;display:flex}.subject-card-bottom{border-top:1px solid #e8e9df;justify-content:space-between;align-items:center;gap:8px;padding:14px 0;display:flex}.preview-link{align-items:center;gap:4px;font-size:10px;font-weight:600;display:flex}.preview-link:hover{text-decoration:underline}.subject-price{align-items:center;gap:7px;font-size:11px;display:flex}.subject-price span{background:#eff1e7;border-radius:50%;justify-content:center;align-items:center;width:21px;height:21px;font-size:14px;display:flex}.bundle-card{background:#eaf0de;border:1px solid #d4ddc1;border-radius:7px;flex-direction:column;padding:23px 20px 18px;display:flex;position:relative;overflow:hidden}.bundle-card .eyebrow{letter-spacing:1.3px;margin-bottom:15px;font-size:7px}.bundle-card h3{font-family:var(--serif);letter-spacing:-.9px;margin-bottom:12px;font-size:30px;font-weight:400;line-height:1.08}.bundle-card p{color:#748065;margin-bottom:16px;font-size:10px;line-height:1.8}.bundle-card-price{font-family:var(--serif);margin-top:auto;margin-bottom:14px;font-size:29px}.bundle-card-price>span{color:#7c846f;margin-left:5px;font-family:Arial,sans-serif;font-size:8px}.bundle-card .button{color:#fff;background:#31543d;border-color:#31543d;gap:8px;min-height:37px;padding:11px 7px;font-size:9px}.bundle-card small{color:#758265;justify-content:center;align-items:center;gap:4px;margin-top:10px;font-size:8px;display:flex}.catalog-footnote{color:#8b8e7e;justify-content:center;align-items:center;gap:8px;margin:24px 0 0;font-size:9px;display:flex}.companion-section{color:#e9eddf;background:#243e31;padding:83px 0;overflow:hidden}.companion-grid{grid-template-columns:.9fr 1fr;align-items:center;gap:90px;display:grid}.light-eyebrow{color:#bdcd9e}.companion-copy h2{color:#f2f3e7;font-size:49px;line-height:1.12}.companion-copy h2 em{color:#c3d79d}.companion-copy>p{color:#adbba8;max-width:350px;font-size:12px;line-height:1.9}.companion-features{margin:29px 0}.companion-features>div{align-items:center;gap:15px;margin:20px 0;display:flex}.companion-features svg{color:#b3ca96;stroke-width:1.4px;width:20px}.companion-features strong{margin-bottom:5px;font-size:12px;display:block}.companion-features small{color:#9faf98;font-size:10px}.companion-link{color:#d1e2b4;border-bottom:1px solid #778a60;align-items:center;gap:13px;padding-bottom:7px;font-size:12px;display:inline-flex}.companion-disclaimer{color:#92a38b;margin-top:15px;font-size:8px;display:block}.companion-window{color:#314637;background:#f5f3e9;border:1px solid #5d6d4b;border-radius:9px;overflow:hidden;transform:rotate(2deg);box-shadow:0 24px 70px #10221980}.browser-bar{color:#7c846d;background:#dfe3d2;border-bottom:1px solid #d3d8c4;justify-content:space-between;align-items:center;padding:12px 15px;font-size:8px;display:flex}.browser-bar>div{gap:4px;display:flex}.browser-bar i{background:#adb7a0;border-radius:50%;width:5px;height:5px}.browser-bar>span{align-items:center;gap:5px;display:flex}.companion-mock-header{justify-content:space-between;align-items:center;padding:20px 20px 15px;display:flex}.companion-mock-header strong{font-size:13px;font-family:var(--serif);align-items:center;gap:4px;font-weight:400;display:flex}.companion-mock-header strong>span:last-child{color:#7d8069;font-style:italic}.tiny-logo{color:#e0e9cb;background:#37593e;border-radius:3px;justify-content:center;align-items:center;width:23px;height:23px;margin-right:5px;display:inline-flex}.companion-mock-nav{color:#7a7d69;border-bottom:1px solid #d7dac9;gap:21px;padding:0 20px 12px;font-size:9px;display:flex}.companion-mock-nav .selected{color:#34583d;border-bottom:2px solid #59734d;margin-bottom:-13px;padding-bottom:7px}.companion-mock-body{padding:25px 25px 17px}.companion-mock-body .eyebrow{letter-spacing:1px;color:#889078;margin-bottom:12px;font-size:7px}.companion-mock-body h3{font-family:var(--serif);margin-bottom:10px;font-size:30px;font-weight:400;line-height:1.1}.companion-mock-body>p{color:#84866f;font-size:9px}.mock-diagram{background:#ecefdc;border:1px solid #d4dbc3;border-radius:5px;padding:12px 15px}.mock-diagram>span{letter-spacing:1px;color:#7e886b;font-size:7px}.mock-diagram .engineering-art{color:#5a7951;height:150px;display:block}.mock-diagram>div{color:#6f7d5f;border-top:1px solid #d6ddc7;justify-content:space-between;padding-top:10px;font-size:7px;display:flex}.mock-diagram>div>span:first-child{align-items:center;gap:5px;display:flex}.mock-bottom{color:#7d856d;gap:26px;margin-top:18px;font-size:8px;display:flex}.mock-bottom>span{align-items:center;gap:6px;display:flex}.window-caption{text-align:center;color:#879079;background:#eceee1;border-top:1px solid #d7dac9;justify-content:center;align-items:center;gap:6px;padding:10px;font-size:8px;display:flex}.steps-grid{grid-template-columns:repeat(3,1fr);gap:45px;padding-top:12px;display:grid}.step{border-top:1px solid #d9dece;padding-top:21px}.step-top{color:#6b835a;justify-content:space-between;align-items:center;margin-bottom:27px;display:flex}.step-top>span{font-family:var(--serif);color:#b6c1a4;font-size:31px;font-style:italic}.step h3{margin-bottom:12px;font-size:16px}.step p{color:#7f8375;max-width:290px;font-size:12px}.pricing-section{background:#eef1e5;border-block:1px solid #e1e5d5}.centered{text-align:center;flex-direction:column;align-items:center;gap:0;margin-bottom:42px;display:flex}.centered h2{margin-bottom:17px;font-size:43px}.centered>p{max-width:100%;font-size:12px}.pricing-grid{grid-template-columns:1fr 1fr;gap:24px;max-width:810px;margin:auto;display:grid}.price-card{background:#fafbf6;border:1px solid #d4dcc7;border-radius:7px;padding:33px;position:relative}.price-card.featured{background:#f8fbee;border:1.5px solid #6d8454;box-shadow:0 10px 26px #3b532c09}.recommended{color:#e5edcf;letter-spacing:1px;background:#3e5a3c;border-radius:20px;align-items:center;gap:6px;padding:7px 12px;font-size:7px;display:flex;position:absolute;top:-13px;right:20px}.price-card .eyebrow{letter-spacing:1.4px;color:#7a8669;margin-bottom:14px;font-size:8px}.price-card h3{font-family:var(--serif);margin-bottom:5px;font-size:30px;font-weight:400}.price-card>p{color:#7b8370;font-size:10px}.price-value{font-family:var(--serif);letter-spacing:-2px;border-bottom:1px solid #dde3d2;align-items:baseline;gap:8px;padding:15px 0 23px;font-size:47px;display:flex}.price-value>span{letter-spacing:0;color:#859075;font-family:Arial,sans-serif;font-size:10px}.price-value .savings{color:#5d7943;white-space:nowrap;background:#e6eed7;border-radius:3px;margin-left:auto;padding:5px 7px;font-size:8px}.price-card ul{margin:0;padding:17px 0 20px;list-style:none}.price-card li{color:#65735a;align-items:center;gap:10px;margin:15px 0;font-size:11px;display:flex}.price-card li svg{color:#6e8d52;width:14px;height:14px}.price-card .button{width:100%;min-height:45px;font-size:11px}.payment-assurance{color:#8a937c;justify-content:center;align-items:center;gap:10px;margin-top:26px;font-size:9px;display:flex}.divider-dot{color:#a8b396}.faq-grid{grid-template-columns:.85fr 1fr;gap:100px;display:grid}.faq-grid h2{font-size:42px}.faq-grid>div>p{color:#828776;margin:20px 0 25px;font-size:12px}.faq-grid .text-link{color:#72845f;font-size:10px}.faq-list details{border-bottom:1px solid var(--line)}.faq-list details:first-child{border-top:1px solid var(--line)}.faq-list summary{cursor:pointer;justify-content:space-between;align-items:center;gap:20px;padding:21px 0;font-size:12px;line-height:1.5;list-style:none;display:flex}.faq-list summary::-webkit-details-marker{display:none}.faq-plus{color:#7e8b6e;font-size:20px;font-weight:400}.faq-list details[open] .faq-plus{transform:rotate(45deg)}.faq-list details>p{color:#7a8370;padding-bottom:10px;padding-right:20px;font-size:11px;line-height:1.9}.closing-section{background:#e9eddb;border-block:1px solid #d9dfcc;overflow:hidden}.closing-inner{justify-content:space-between;align-items:center;gap:20px;padding-top:47px;padding-bottom:47px;display:flex;position:relative}.closing-inner .eyebrow{margin-bottom:12px;font-size:8px}.closing-inner h2{letter-spacing:-1px;margin:0;font-size:33px}.closing-inner .button{z-index:1;font-size:11px}.closing-art{opacity:.08;pointer-events:none;position:absolute;top:5px;right:-10px;transform:rotate(20deg)}.site-footer{padding:43px 0 20px}.footer-top{justify-content:space-between;align-items:center;gap:30px;padding-bottom:35px;display:flex}.footer-top .brand{font-size:21px}.footer-top p{color:#838a77;margin:12px 0 0;font-size:10px}.footer-links{color:#7c8471;gap:25px;font-size:10px;display:flex}.footer-bottom{border-top:1px solid var(--line);color:#929887;justify-content:space-between;gap:30px;padding-top:20px;font-size:8px;display:flex}.footer-bottom p{margin:0}.empty-state{text-align:center;color:#7d886f;border:1px dashed #cbd4be;border-radius:8px;padding:45px 20px}.empty-state>svg{margin:0 auto 14px}.empty-state h3{color:var(--ink)}.empty-state p{font-size:13px}.skip-link{z-index:100;background:var(--green);color:#fff;border-radius:5px;padding:15px;position:fixed;top:-70px;left:10px}.skip-link:focus{top:10px}.subpage{min-height:65vh;padding:50px 0 80px}.breadcrumbs{color:#859076;align-items:center;gap:10px;margin-bottom:28px;font-size:11px;display:flex}.breadcrumbs a:hover{text-decoration:underline}.subpage h1{letter-spacing:-1.6px;font-size:44px;line-height:1.15}.subpage-heading{justify-content:space-between;align-items:center;gap:25px;margin-bottom:30px;display:flex}.subpage-heading h1{margin-bottom:10px}.subpage-heading p{color:#7e8771;margin:0;font-size:13px}.preview-layout{grid-template-columns:1fr 290px;align-items:start;gap:30px;display:grid}.reader{background:#e9ece2;border:1px solid #d8decc;border-radius:7px;overflow:hidden}.reader-toolbar{border-bottom:1px solid var(--line);background:#fdfdf8;justify-content:space-between;align-items:center;gap:10px;padding:12px 18px;font-size:12px;display:flex}.reader-toolbar>div{align-items:center;gap:12px;display:flex}.reader-toolbar .icon-button{padding:7px}.reader-image{justify-content:center;min-height:300px;padding:25px;display:flex}.reader-image img{background:#fff;width:100%;height:auto;box-shadow:0 5px 17px #293f3017}.reader-pagination{justify-content:center;gap:8px;padding:0 16px 20px;display:flex}.reader-pagination button{background:#f9faf4;border:1px solid #d1d9c5;border-radius:4px;padding:7px 11px;font-size:12px}.reader-pagination button.active{background:var(--green);color:#fff;border-color:var(--green)}.preview-sidebar{border:1px solid var(--line);background:#fffef8;border-radius:7px;padding:25px;position:sticky;top:110px}.preview-sidebar h3{font-family:var(--serif);margin-top:20px;font-size:27px;font-weight:400}.preview-sidebar>p{color:#7a856c;font-size:12px}.preview-sidebar ul{border-top:1px solid var(--line);padding:15px 0;list-style:none}.preview-sidebar li{color:#6e7d60;align-items:center;gap:8px;margin:14px 0;font-size:11px;display:flex}.preview-sidebar .button{width:100%;margin-bottom:10px;font-size:11px}.preview-sidebar small{text-align:center;color:#8a947e;margin-top:8px;font-size:10px;display:block}.sidebar-price{font-family:var(--serif);margin-bottom:17px;font-size:36px}.sidebar-price small{margin-left:7px;font-family:Arial,sans-serif;display:inline}.sidebar-bundle{border-top:1px solid var(--line);margin-top:22px;padding-top:20px}.sidebar-bundle>p{font-size:11px;line-height:1.7}.sidebar-bundle a{align-items:center;gap:8px;font-size:11px;font-weight:600;display:flex}.preview-notice{background:#e8efdb;border:1px solid #d6e0c5;border-radius:5px;align-items:center;gap:12px;margin-bottom:24px;padding:16px 20px;font-size:12px;line-height:1.6;display:flex}.preview-subject-switch{max-width:250px;color:var(--ink);background:#fffef8;border:1px solid #d5ddc8;border-radius:4px;padding:10px;font-size:12px}.auth-page{grid-template-columns:1fr 1fr;align-items:start;gap:90px;max-width:1120px;min-height:80vh;margin:auto;padding:70px 40px;display:grid}.auth-intro{padding-top:25px}.auth-intro h1{letter-spacing:-2px;margin:20px 0;font-size:52px;line-height:1.1}.auth-intro>p{color:#7c856e;max-width:350px;font-size:14px}.auth-benefit{color:#6d7d5d;align-items:center;gap:12px;margin-top:22px;font-size:12px;display:flex}.auth-benefit svg{width:19px}.auth-card{background:#fffef9;border:1px solid #dce2d1;border-radius:10px;padding:32px;box-shadow:0 12px 35px #2f443209}.auth-card h2{letter-spacing:-.7px;margin-bottom:10px;font-size:30px}.auth-card>p{color:#7c866f;font-size:12px}.form-label{margin:25px 0 9px;font-size:12px;font-weight:600;display:block}.phone-input{background:#fff;border:1px solid #cdd7c0;border-radius:5px;align-items:center;display:flex;overflow:hidden}.phone-input>span{color:#7c886d;border-right:1px solid #dfe5d6;padding:14px;font-size:13px}.phone-input input{width:100%;color:var(--ink);background:0 0;border:0;outline:0;min-width:0;padding:14px 12px;font-size:15px}.phone-input:focus-within{outline-offset:2px;outline:2px solid #8ca770}.auth-card .button{width:100%;margin-top:20px}.form-note{margin-top:15px;margin-bottom:0;line-height:1.8;color:#8a947b!important;font-size:10px!important}.form-note a{text-decoration:underline}.alert{color:#7b693b;background:#f8f2df;border:1px solid #e5d9b7;border-radius:5px;align-items:flex-start;gap:9px;margin:18px 0;padding:13px 15px;font-size:12px;line-height:1.6;display:flex}.alert svg{flex-shrink:0;width:17px;margin-top:1px}.alert-error{color:#985b43;background:#fbefeb;border-color:#eccfc3}.alert-success{color:#547143;background:#edf4e6;border-color:#cedfbf}.otp-input{letter-spacing:12px;text-align:center;width:100%;color:var(--ink);background:#fff;border:1px solid #cdd7c0;border-radius:5px;padding:14px;font-size:24px}.auth-card .text-button{margin:16px auto 0;display:block}.text-button{color:#6d815a;background:0 0;border:0;padding:5px;font-size:12px;text-decoration:underline}.checkout-layout{grid-template-columns:1fr 390px;gap:60px;max-width:980px;margin:auto;display:grid}.checkout-summary{background:#eef2e5;border:1px solid #d8e1c9;border-radius:8px;padding:30px}.checkout-summary h2{letter-spacing:-.5px;font-size:28px}.checkout-summary .subject-icon{margin-bottom:20px}.checkout-items{margin:25px 0;padding:0;list-style:none}.checkout-items li{color:#6c7e5d;align-items:center;gap:10px;margin:16px 0;font-size:12px;display:flex}.checkout-items svg{flex-shrink:0;width:14px}.checkout-total{border-top:1px solid #d0dbc0;justify-content:space-between;align-items:center;padding-top:20px;font-size:13px;display:flex}.checkout-total strong{font-family:var(--serif);font-size:36px;font-weight:400}.checkout-summary small{color:#839273;margin-top:13px;font-size:10px;line-height:1.7;display:block}.checkout-stages{color:#8d9780;align-items:center;gap:13px;margin-bottom:35px;font-size:10px;display:flex}.checkout-stages .active{color:var(--green);font-weight:600}.checkout-stages>span{align-items:center;gap:6px;display:flex}.checkout-stages i{border:1px solid #c8d4bb;border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;font-size:9px;font-style:normal;display:flex}.checkout-stages .active i{background:var(--green);border-color:var(--green);color:#fff}.checkout-status h2{font-size:34px}.checkout-status>p{color:#7b856f;font-size:13px}.purchase-ready{border:1px solid var(--line);background:#fffef9;border-radius:8px;padding:27px}.purchase-ready .button{width:100%;margin-top:20px}.purchase-ready>p{color:#7f8874;font-size:12px}.secure-note{color:#8a967d;justify-content:center;align-items:center;gap:7px;margin-top:20px;font-size:10px;display:flex}.library-grid{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.library-card{border:1px solid var(--line);background:#fffef9;border-radius:7px;flex-direction:column;padding:25px;display:flex}.library-card .subject-card-top{margin-bottom:20px}.library-card h2{letter-spacing:-.6px;font-size:26px}.library-card>p{color:#7e8971;font-size:12px}.library-card .button{min-height:43px;padding:13px 10px;font-size:11px}.library-card .button+.button{margin-top:10px}.library-card .subject-meta{margin-top:auto}.owned-badge{color:#65824b;align-items:center;gap:5px;font-size:10px;display:flex}.locked-badge{color:#969d8b;align-items:center;gap:5px;font-size:10px;display:flex}.library-banner{background:var(--green);color:#fff;border-radius:8px;justify-content:space-between;align-items:center;gap:30px;margin-bottom:30px;padding:28px;display:flex}.library-banner h2{letter-spacing:-.5px;margin-bottom:8px;font-size:27px}.library-banner p{color:#bdcdb2;margin-bottom:0;font-size:12px}.library-banner .button{white-space:nowrap;font-size:11px}.policy-content{max-width:760px}.policy-content h2{letter-spacing:-.5px;margin-top:35px;font-size:27px}.policy-content p,.policy-content li{color:#748166;font-size:14px;line-height:1.9}.policy-content a{text-decoration:underline}.loading-panel{text-align:center;color:#7f8c6f;padding:80px 20px}.spin{animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width:1100px){.container{padding-inline:28px}.nav-inner{gap:20px}.main-nav{gap:17px;font-size:10px}.nav-actions{gap:16px}.brand{font-size:20px}.hero-grid{gap:20px;min-height:620px}.hero h1{font-size:58px}.hero-visual{transform-origin:50%;transform:scale(.9)}.hero-actions{gap:6px}.hero-actions .button{padding:15px 16px;font-size:11px}.hero-assurance{gap:10px;font-size:8px}.subject-grid{gap:12px}.subject-card{padding:19px 16px 0}.subject-card h3{font-size:17px}.preview-link{font-size:9px}.subject-card-bottom{gap:3px}.subject-meta{gap:8px;font-size:8px}.companion-grid{gap:45px}.faq-grid{gap:60px}.checkout-layout{grid-template-columns:1fr 350px;gap:35px}.auth-page{gap:50px}.stats-inner>div{gap:12px;padding-left:18px}}@media (max-width:850px){.main-nav{background:var(--paper);border-bottom:1px solid var(--line);padding:25px;font-size:14px;display:none;position:absolute;top:74px;left:0;right:0;box-shadow:0 10px 20px #233e3010}.main-nav.is-open{flex-direction:column;display:flex}.menu-toggle{display:inline-flex}.nav-inner{height:74px}.nav-actions{gap:16px}.hero-grid{grid-template-columns:1fr 1fr;min-height:580px;padding-block:45px 40px}.hero h1{letter-spacing:-2px;font-size:48px}.hero-description{font-size:12px}.hero-visual{transform-origin:0;width:420px;margin-left:-10px;transform:scale(.77)}.hero-actions{flex-wrap:wrap;gap:5px}.hero-assurance{flex-wrap:wrap;gap:8px 12px}.pill{letter-spacing:.8px;padding:7px 9px;font-size:7px}.stats-inner strong{font-size:28px}.stats-inner span{font-size:9px}.stats-inner>div{gap:9px;padding-left:12px}.subject-grid{grid-template-columns:repeat(2,1fr);gap:20px}.subject-card{min-height:290px;padding:25px 24px 0}.subject-card h3{max-width:240px;min-height:52px;font-size:21px}.subject-card>p{font-size:12px}.subject-meta{font-size:10px}.preview-link{font-size:11px}.subject-price{font-size:12px}.chapter-number{font-size:8px}.bundle-card{padding:26px 24px}.bundle-card h3{font-size:34px}.bundle-card p{font-size:12px}.bundle-card .button{min-height:43px;font-size:12px}.bundle-card small{font-size:10px}.bundle-card .eyebrow{font-size:9px}.bundle-card-price{font-size:34px}.companion-grid{gap:30px}.companion-copy h2{font-size:40px}.companion-mock-body{padding:20px 17px}.companion-mock-body h3{font-size:25px}.companion-mock-header{padding:17px}.companion-mock-header strong{font-size:11px}.companion-mock-nav{gap:17px}.mock-bottom{gap:12px;font-size:7px}.steps-grid{gap:25px}.section{padding:70px 0}h2{font-size:39px}.section-heading{gap:30px}.section-heading>p{max-width:260px}.faq-grid{gap:35px}.faq-grid h2{font-size:34px}.price-card{padding:28px}.price-value{font-size:40px}.price-value .savings{font-size:7px}.footer-links{gap:15px}.preview-layout{grid-template-columns:1fr 250px;gap:20px}.preview-sidebar{padding:20px}.subpage h1{font-size:36px}.auth-page{gap:30px;padding:50px 28px}.auth-intro h1{font-size:43px}.auth-card{padding:25px}.checkout-layout{grid-template-columns:1fr 310px;gap:25px}.checkout-summary{padding:24px}.library-grid{grid-template-columns:1fr 1fr}}@media (max-width:640px){.container{padding-inline:22px}.nav-inner{gap:10px;height:70px}.brand{font-size:21px}.nav-actions{gap:8px}.nav-actions>.button{display:none}.sign-in{font-size:11px}.hero-grid{flex-direction:column;align-items:stretch;gap:0;padding-block:42px 33px;display:flex}.hero-copy{z-index:4;position:relative}.pill{letter-spacing:.8px;margin-bottom:24px;padding:8px 11px;font-size:8px}.hero h1{letter-spacing:-2.5px;font-size:54px;line-height:1.07}.hero-description{max-width:380px;font-size:13px;line-height:1.85}.hero-actions{flex-wrap:nowrap;gap:12px}.hero-actions .button{gap:9px;padding:15px 14px;font-size:11px}.hero-actions .button-text{padding-inline:0;font-size:10px}.hero-assurance{gap:12px;margin-top:19px;font-size:8px}.hero-visual{transform-origin:top;width:360px;max-width:100%;height:440px;margin:35px auto -15px;transform:scale(.85)}.book-front{left:12px}.book-back{right:-10px}.floating-note{padding:13px 15px;bottom:-9px;right:-20px}.note-bottom{display:none}.note-top{font-size:7px;left:45px}.stats-inner{grid-template-columns:1fr 1fr;gap:25px 10px;padding-block:25px}.stats-inner>div{gap:15px;padding-left:20px}.stats-inner>div:nth-child(3){border:0;padding-left:0}.stats-inner strong{font-size:32px}.stats-inner span{max-width:100px;font-size:10px}.section{padding:58px 0}.section-heading{margin-bottom:26px;display:block}.section-heading h2{margin-bottom:20px;font-size:38px}.section-heading>p{max-width:350px;font-size:12px}.eyebrow{letter-spacing:1.6px;font-size:9px}.catalog-toolbar{flex-direction:column;align-items:flex-start;gap:15px;padding:18px 0}.catalog-label{font-size:10px}.search-box{width:100%;padding:11px}.search-box input{width:100%;font-size:12px}.subject-grid{gap:13px}.subject-card{min-height:310px;padding:18px 14px 0}.subject-card-top{flex-wrap:wrap;gap:5px;margin-bottom:19px}.subject-icon{width:37px;height:37px}.subject-icon svg{width:21px}.chapter-number{letter-spacing:.8px;font-size:6px}.subject-card h3{min-height:45px;font-size:17px}.subject-card>p{min-height:68px;font-size:10px;line-height:1.7}.subject-meta{flex-wrap:wrap;gap:7px;padding-bottom:12px;font-size:8px}.subject-card-bottom{flex-wrap:wrap;gap:10px;padding:11px 0}.preview-link{gap:3px;font-size:9px}.preview-link svg{width:12px}.subject-price{font-size:11px}.bundle-card{padding:19px 14px}.bundle-card .eyebrow{letter-spacing:.9px;font-size:6px}.bundle-card h3{font-size:28px}.bundle-card p{font-size:10px}.bundle-card-price{margin-bottom:12px;font-size:29px}.bundle-card-price>span{margin:3px 0 0;font-size:8px;display:block}.bundle-card .button{gap:4px;min-height:41px;padding:8px;font-size:9px;line-height:1.6}.bundle-card .button svg{display:none}.bundle-card small{font-size:7px;line-height:1.5}.catalog-footnote{text-align:center;align-items:flex-start;font-size:8px;line-height:1.8}.catalog-footnote svg{flex-shrink:0;margin-top:3px}.companion-section{padding:55px 0}.companion-grid{grid-template-columns:1fr;gap:40px}.companion-copy h2{font-size:43px}.companion-copy>p{max-width:100%;font-size:13px}.companion-features strong{font-size:13px}.companion-features small{font-size:11px}.companion-window{width:100%;max-width:450px;margin:auto;transform:rotate(1deg)}.companion-mock-header{padding:19px}.companion-mock-header strong{font-size:14px}.companion-mock-nav{gap:25px;font-size:10px}.companion-mock-body{padding:25px}.companion-mock-body h3{font-size:31px}.mock-bottom{gap:18px;font-size:8px}.steps-grid{grid-template-columns:1fr;gap:22px;padding-top:5px}.step-top{margin-bottom:18px}.step h3{font-size:18px}.step p{max-width:100%;font-size:12px}.centered{display:flex}.centered h2{font-size:35px}.centered>p{font-size:11px}.pricing-grid{grid-template-columns:1fr;gap:28px;max-width:400px}.price-card{padding:29px}.price-card h3{font-size:32px}.price-value{font-size:48px}.price-card>p,.price-card li,.price-card .button{font-size:12px}.price-value .savings{font-size:9px}.payment-assurance{flex-wrap:wrap;gap:7px;max-width:320px;margin-inline:auto;font-size:8px;line-height:1.8}.payment-assurance .divider-dot:last-of-type{display:none}.faq-grid{grid-template-columns:1fr;gap:30px}.faq-grid h2{font-size:38px}.faq-list details>p{font-size:12px}.closing-inner{flex-direction:column;align-items:flex-start;gap:25px;padding-block:35px}.closing-inner h2{max-width:260px;font-size:33px;line-height:1.2}.closing-inner .eyebrow{font-size:7px}.closing-art{top:25px;right:-20px}.footer-top{display:block}.footer-links{flex-wrap:wrap;gap:20px;margin-top:25px}.footer-bottom{flex-direction:column;gap:12px;font-size:8px}.site-footer{padding-top:35px}.subpage{padding:30px 0 50px}.breadcrumbs{gap:7px;font-size:10px}.subpage h1{font-size:34px}.subpage-heading{flex-direction:column;align-items:flex-start;gap:20px}.preview-layout{grid-template-columns:1fr}.reader-image{padding:12px}.reader-toolbar{padding:10px;font-size:10px}.reader-toolbar>div{gap:8px}.preview-sidebar{padding:25px;position:static}.preview-notice{padding:13px;font-size:11px}.preview-notice svg{flex-shrink:0}.preview-subject-switch{width:100%;max-width:100%}.auth-page{flex-direction:column;gap:25px;padding:35px 22px 55px;display:flex}.auth-intro{padding-top:0}.auth-intro h1{margin:15px 0;font-size:39px}.auth-intro>p{margin-bottom:0;font-size:12px}.auth-benefit{display:none}.auth-card{width:100%;padding:25px}.checkout-layout{flex-direction:column;gap:30px;display:flex}.checkout-summary{order:-1;padding:24px}.checkout-summary h2{margin-bottom:20px;font-size:27px}.checkout-summary .subject-icon,.checkout-summary .eyebrow,.checkout-summary .checkout-items{display:none}.checkout-total{padding-top:15px}.checkout-total strong{font-size:32px}.checkout-stages{margin-bottom:22px}.checkout-status h2{font-size:30px}.library-grid{grid-template-columns:1fr}.library-banner{padding:25px;display:block}.library-banner .button{margin-top:20px}.library-card h2{font-size:27px}.library-card .subject-meta{font-size:11px}.library-card .button{font-size:12px}.library-card .chapter-number{font-size:9px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition:none!important;animation:none!important}.subject-card:hover,.button:hover{transform:none}}@media (min-width:641px) and (max-width:780px){.hero-grid{flex-direction:column;align-items:stretch;gap:25px;display:flex}.hero-copy{max-width:600px}.hero h1{font-size:60px}.hero-description{font-size:14px}.hero-visual{transform-origin:top;width:450px;max-width:100%;height:480px;margin:15px auto 0;transform:scale(.9)}.hero-assurance{font-size:10px}.hero-actions .button{font-size:12px}.pill{font-size:9px}}@media (max-width:640px){.hero h1{font-size:clamp(40px,10.7vw,54px)}.hero-actions{gap:7px}.hero-actions .button{font-size:10px}}.legal-page{padding:58px 0 85px}.legal-heading{max-width:860px;margin-bottom:42px}.legal-heading>.text-link{margin-bottom:35px}.legal-heading h1{letter-spacing:-2px;margin:0 0 22px;font-size:52px;line-height:1.12}.legal-heading>p{color:#626d61;max-width:670px;margin-bottom:18px;font-size:16px}.legal-heading .eyebrow{color:#6b805d}.legal-updated{color:#687460;font-size:11px}.legal-layout{grid-template-columns:235px minmax(0,1fr);align-items:start;gap:60px;display:grid}.legal-sidebar{position:sticky;top:110px}.legal-sidebar nav{border-top:1px solid var(--line);flex-direction:column;display:flex}.legal-sidebar nav a{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:10px;padding:17px 10px;font-size:12px;line-height:1.4;display:flex}.legal-sidebar nav a:hover,.legal-sidebar nav a[aria-current=page]{color:#234c3a;background:#e9eedf}.legal-sidebar nav a[aria-current=page]{border-left:3px solid var(--green);font-weight:700}.legal-sidebar svg{flex-shrink:0}.legal-sidebar>p{color:#6b7464;margin:28px 10px;font-size:12px}.legal-sidebar>p>a{text-underline-offset:4px;text-decoration:underline}.legal-article{min-width:0;max-width:800px}.legal-article h2{letter-spacing:-.5px;margin:37px 0 15px;font-size:27px;line-height:1.3}.legal-article p,.legal-article li{color:#4d5d4f;font-size:14px;line-height:1.9}.legal-article li{margin-bottom:10px}.legal-article ul{margin:15px 0 25px;padding-left:21px}.legal-article a{color:#234c3a;text-underline-offset:3px;overflow-wrap:anywhere;text-decoration:underline}.legal-notice{color:#67542e;background:#f3ecda;border:1px solid #dfd2b2;border-radius:6px;align-items:flex-start;gap:13px;margin:0 0 22px;padding:19px 22px;display:flex}.legal-notice>svg{flex-shrink:0;margin-top:2px}.legal-notice strong{font-size:13px}.legal-notice p{color:#6b5b38;margin:6px 0 0;font-size:12px;line-height:1.8}.legal-preview{color:#4f6545;background:#eaf0e2;border-left:3px solid #7c9464;margin-bottom:30px;padding:17px 20px;font-size:12px;line-height:1.9}.legal-endnote{border-top:1px solid var(--line);color:#65725d;margin-top:38px;padding-top:24px;font-size:12px;line-height:1.9}.legal-placeholder{color:#735a24;background:#f3ecda;border-radius:3px;padding:2px 7px;font-size:12px;display:inline-block}.contact-details{border-top:1px solid var(--line);margin:14px 0 30px}.contact-details>div{border-bottom:1px solid var(--line);grid-template-columns:180px minmax(0,1fr);gap:20px;padding:18px 0;display:grid}.contact-details dt{color:#6d7665;font-size:12px;line-height:1.7}.contact-details dd{overflow-wrap:anywhere;margin:0;font-size:14px;line-height:1.8}.contact-address{white-space:pre-line}.legal-table-wrap{max-width:100%;margin:20px 0 25px;overflow:auto}.legal-table-wrap table{border-collapse:collapse;text-align:left;width:100%;font-size:12px;line-height:1.7}.legal-table-wrap caption{text-align:left;color:#67725e;padding-bottom:12px}.legal-table-wrap th,.legal-table-wrap td{vertical-align:top;border:1px solid var(--line);min-width:120px;padding:13px}.legal-table-wrap th{background:#eaf0e2;font-weight:600}.legal-table-wrap td{color:#53614e}.policy-directory{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:35px;display:grid}.policy-directory-card{border:1px solid var(--line);background:#fcfcf6;border-radius:7px;flex-direction:column;align-items:flex-start;padding:28px;display:flex}.policy-directory-card:hover{background:#f0f3e7;border-color:#92a17e;transform:translateY(-2px)}.policy-directory-card .eyebrow{color:#859272;margin-bottom:22px;font-size:12px}.policy-directory-card h2{letter-spacing:-.7px;margin-bottom:15px;font-size:26px;line-height:1.2}.policy-directory-card p{color:#697460;margin-bottom:26px;font-size:13px;line-height:1.8}.policy-directory-card .text-link{margin-top:auto}.footer-legal-links{border-top:1px solid var(--line);color:#5c6b55;flex-wrap:wrap;gap:16px 26px;margin:26px 0 0;padding-top:23px;font-size:11px;line-height:1.6;display:flex}.footer-legal-links a:hover{text-underline-offset:4px;text-decoration:underline}@media (max-width:900px){.legal-layout{grid-template-columns:190px minmax(0,1fr);gap:30px}.policy-directory{grid-template-columns:repeat(2,minmax(0,1fr))}.legal-heading h1{font-size:44px}.contact-details>div{grid-template-columns:1fr;gap:7px}}@media (max-width:640px){.legal-page{padding:35px 0 55px}.legal-page>.container{padding:0 22px}.legal-heading{margin-bottom:28px}.legal-heading h1{letter-spacing:-1.2px;overflow-wrap:break-word;font-size:36px}.legal-heading>p{font-size:14px}.legal-heading>.text-link{margin-bottom:25px}.legal-layout{grid-template-columns:1fr;gap:28px}.legal-sidebar{position:static}.legal-sidebar nav{grid-template-columns:1fr 1fr;display:grid}.legal-sidebar nav a{padding:13px 9px;font-size:11px}.legal-sidebar>p{display:none}.legal-article h2{margin-top:30px;font-size:25px}.legal-article p,.legal-article li{font-size:13px}.legal-notice{gap:10px;padding:16px}.legal-notice p{font-size:12px}.legal-preview{padding:15px}.policy-directory{grid-template-columns:1fr;gap:15px}.policy-directory-card{padding:23px}.policy-directory-card h2{font-size:27px}.policy-directory-card .eyebrow{margin-bottom:13px}.footer-legal-links{grid-template-columns:1fr 1fr;gap:15px 20px;display:grid}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}