:root{--bg: #0B0C10;--surface-1: #111219;--surface-2: #16171D;--surface-3: #1C1D24;--surface-4: #232531;--surface-overlay: rgba(8, 9, 12, .72);--border-subtle: rgba(255, 255, 255, .06);--border: rgba(255, 255, 255, .08);--border-strong: rgba(255, 255, 255, .1);--border-focus: rgba(29, 171, 174, .55);--text: #F5F5F7;--text-secondary: #A1A1A6;--text-muted: #9A9AA2;--text-faint: #82858E;--text-on-accent: #FFFFFF;--purple: #8D2FE7;--purple-bright: #9954FF;--teal: #1DABAE;--teal-bright: #34D2D5;--magenta: #D6336C;--teal-12: rgba(29, 171, 174, .12);--teal-18: rgba(29, 171, 174, .18);--purple-12: rgba(141, 47, 231, .12);--purple-18: rgba(141, 47, 231, .18);--rec: var(--magenta);--rec-12: rgba(214, 51, 108, .12);--rec-18: rgba(214, 51, 108, .18);--gradient-cta: linear-gradient(172deg, #3B0A7A 12%, #8D2FE7 52%, #D6336C 90%);--gradient-cta-hover: linear-gradient(172deg, #45128A 12%, #9A3CF0 52%, #E0497A 90%);--gradient-glow: radial-gradient(circle at 30% 0%, rgba(29,171,174,.1) 0%, rgba(141,47,231,.05) 42%, transparent 70%);--success: #34C759;--success-12: rgba(52, 199, 89, .12);--success-18: rgba(52, 199, 89, .18);--info: #5AC8FA;--info-12: rgba(90, 200, 250, .12);--info-18: rgba(90, 200, 250, .18);--warn: #E5A23D;--warn-12: rgba(229, 162, 61, .12);--warn-18: rgba(229, 162, 61, .18);--danger: #E5544B;--danger-12: rgba(229, 84, 75, .12);--danger-18: rgba(229, 84, 75, .18);--r-sm: 6px;--r-md: 10px;--r-lg: 14px;--r-xl: 18px;--r-pill: 999px;--shadow-1: 0 1px 2px rgba(0,0,0,.4);--shadow-2: 0 8px 24px rgba(0,0,0,.45);--shadow-pop: 0 16px 48px rgba(0,0,0,.55);--shadow-cta: 0 6px 22px rgba(141, 47, 231, .28);--ring-focus: 0 0 0 3px rgba(29, 171, 174, .22);--s-1: 4px;--s-2: 8px;--s-3: 12px;--s-4: 16px;--s-5: 20px;--s-6: 24px;--s-7: 32px;--s-8: 40px;--s-9: 48px;--s-10: 64px;--fs-display: 28px;--fs-h1: 22px;--fs-h2: 18px;--fs-h3: 15px;--fs-body: 14px;--fs-sm: 13px;--fs-xs: 12px;--fs-eyebrow: 11px;--sidebar-w: 248px;--topbar-h: 60px;--content-max: 1280px;--content-pad: 32px;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-display: "Montserrat", var(--font-sans);--font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;--transition: .16s cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:var(--fs-body);line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:var(--purple-bright);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;display:block}:focus-visible{outline:none;box-shadow:var(--ring-focus);border-radius:var(--r-sm)}::selection{background:var(--teal-18);color:var(--text)}:root{--fs-hero: clamp(40px, 6vw, 76px);--fs-section: clamp(28px, 3.4vw, 44px);--fs-lead: clamp(18px, 1.6vw, 22px);--measure-prose: 64ch;--marketing-max: 1180px;--marketing-pad: clamp(20px, 5vw, 64px);--section-atmos: radial-gradient( ellipse 80% 60% at 50% 0%, var(--purple-12) 0%, var(--teal-12) 38%, transparent 72%);--marketing-bg: var(--bg);--mk-grad: linear-gradient(118deg, var(--purple) 0%, var(--magenta) 52%, var(--teal-bright) 100%);--mk-grad-teal: linear-gradient(120deg, var(--teal-bright), var(--teal));--mk-aura: radial-gradient(circle at 50% 46%, var(--teal-18), var(--purple-18) 44%, transparent 70%);--mk-veil: radial-gradient(60% 50% at 50% 8%, var(--purple-12), transparent 60%), radial-gradient(70% 60% at 50% 108%, var(--teal-12), transparent 60%);--mk-vignette: radial-gradient(ellipse at center, transparent 52%, rgba(0, 0, 0, .55) 100%);--mk-card-wash: linear-gradient(180deg, rgba(255, 255, 255, .03), rgba(255, 255, 255, 0));--mk-feat-wash: linear-gradient(180deg, var(--purple-12), var(--surface-3));--mk-hairline: var(--border);--mk-fs-statement: clamp(26px, 3.6vw, 44px);--mk-fs-kicker: clamp(30px, 4.6vw, 54px);--mk-fs-stat: clamp(38px, 5vw, 58px);--mk-fs-inst: clamp(20px, 2.2vw, 24px);--mk-fs-price: clamp(26px, 2.4vw, 32px);--mk-fs-price-individual: clamp(20px, 1.8vw, 26px);--mk-fs-price-individual-dense: clamp(15px, 2vw, 19px);--mk-section-y: clamp(88px, 11vw, 150px)}:root{--bg-alt: #0F1015;--bg-deep: #08090D;--gold: #D4BD82;--gold-soft: #E0CC98;--gold-12: rgba(212, 189, 130, .12);--gold-18: rgba(212, 189, 130, .18);--gold-28: rgba(212, 189, 130, .28);--on-gold: #0B0C10;--ease: cubic-bezier(.16, 1, .3, 1)}.mk-footer{background:#08090d;display:grid;grid-template-columns:minmax(0,1.5fr) repeat(4,minmax(0,1fr));gap:var(--s-7);max-width:var(--marketing-max);margin:0 auto;padding:var(--s-9) var(--marketing-pad) var(--s-7);border-top:1px solid rgba(255,255,255,.08)}.mk-footer__brand{display:flex;flex-direction:column;gap:var(--s-2)}.mk-footer__brand strong{color:var(--text);font-family:var(--font-display);font-size:15px;font-weight:600}.mk-footer__brand span{color:#ffffff80;font-size:13px;line-height:1.5}.mk-footer__col-heading{color:#fffc;font-size:11px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:var(--s-3)}.mk-footer__col{display:flex;flex-direction:column;gap:var(--s-2)}.mk-footer__col a{color:#ffffff80;font-size:14px;line-height:1.6;transition:color .2s ease}.mk-footer__col a:hover{color:var(--text);text-decoration:none}.mk-footer__bottom{grid-column:1 / -1;display:flex;align-items:center;justify-content:space-between;padding-top:var(--s-5);border-top:1px solid rgba(255,255,255,.06)}.mk-footer__bottom-left{display:flex;align-items:center;gap:var(--s-4)}.mk-footer__bottom-legal{display:flex;gap:var(--s-4)}.mk-footer__bottom-legal a{color:#fff6;font-size:13px;transition:color .2s ease}.mk-footer__bottom-legal a:hover{color:#ffffffb3;text-decoration:none}.mk-footer__rights{color:#ffffff4d;font-size:13px}.mk-footer__social{margin-top:var(--s-3)}.mk-footer__social-link{color:#fff6;transition:color .2s ease}.mk-footer__social-link:hover{color:var(--text)}@media(max-width:900px){.mk-footer{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s-6) var(--s-7)}.mk-footer__brand{grid-column:1 / -1}.mk-footer__bottom{flex-direction:column;align-items:flex-start;gap:var(--s-3)}}.bk-amb{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0}.bk-amb--veil{background:var(--mk-veil)}.bk-amb--grain{opacity:.04;mix-blend-mode:overlay;background-image:radial-gradient(rgba(255,255,255,.6) .5px,transparent .5px);background-size:3px 3px}.bk-amb--edge{background:var(--mk-vignette)}.bk-amb--stars i{position:absolute;top:0;left:0;width:1px;height:1px;border-radius:50%;background:transparent}.bk-amb--stars .bk-amb__star-1{box-shadow:1373px 692px #ffffff38,687px 1612px #ffffff5c,1397px 465px #ffffff6b,1349px 570px #ffffff42,850px 1929px #ffffff80,129px 1955px #ffffff30,848px 226px #ffffff47,560px 1442px #ffffff38,1436px 1382px #ffffff63,984px 44px #ffffff5c,722px 653px #ffffff69,133px 1873px #ffffff2b,56px 100px #ffffff61,1287px 1849px #ffffff57,1245px 1760px #ffffff40,1129px 1609px #ffffff54,1475px 974px #ffffff21,1319px 1376px #ffffff4f,1417px 483px #ffffff42,83px 307px #ffffff38,397px 1379px #ffffff1c,630px 142px #ffffff52,995px 466px #ffffff4a,877px 52px #ffffff4a,246px 673px #ffffff70,1125px 1437px #ffffff59,790px 579px #ffffff63,1309px 892px #ffffff57,47px 557px #ffffff73,698px 761px #ffffff75,810px 1791px #ffffff26,1221px 1278px #ffffff6e,694px 117px #ffffff7d,927px 1603px #ffffff61,203px 556px #ffffff3d,1015px 2075px #ffffff7d,1140px 1759px #ffffff54,884px 157px #fff3,147px 760px #ffffff30,95px 1555px #ffffff52,923px 1811px #ffffff3d,1146px 9px #ffffff52,13px 767px #ffffff52,748px 1501px #ffffff29,1156px 1924px #ffffff63,728px 319px #ffffff80,288px 2050px #ffffff38,1000px 2075px #ffffff3d,161px 2088px #ffffff80,493px 308px #ffffff69,579px 1384px #ffffff85,1196px 664px #ffffff63,1083px 699px #ffffff1c,1142px 716px #ffffff57,782px 777px #ffffff30,755px 144px #ffffff7d,96px 1437px #ffffff3d,795px 2082px #ffffff4d,1232px 452px #ffffff2b,15px 1212px #ffffff26,76px 719px #ffffff4a,1223px 24px #ffffff80,684px 1963px #ffffff36,1369px 998px #ffffff7d,318px 1051px #ffffff2e,867px 262px #ffffff80,564px 1412px #ffffff36,520px 1186px #ffffff5e,984px 751px #ffffff4f,216px 67px #ffffff82,172px 778px #ffffff54,1238px 1622px #ffffff57,847px 2037px #ffffff1c,1390px 1945px #ffffff82,1205px 59px #ffffff1f,1492px 1438px #ffffff63,1405px 145px #ffffff70,644px 5px #ffffff38,609px 1526px #ffffff7a,547px 937px #ffffff69,107px 1075px #ffffff1f,892px 1740px #ffffff57,844px 798px #ffffff78,416px 1793px #ffffff61,1298px 2067px #ffffff82,242px 29px #ffffff5e,828px 410px #ffffff61,137px 284px #ffffff24,820px 378px #ffffff70,1449px 367px #ffffff6e,369px 1634px #ffffff2b,883px 691px #ffffff40,948px 816px #ffffff45,1092px 1141px #ffffff1f,831px 1256px #ffffff5e,1448px 1277px #ffffff5e,1121px 1603px #ffffff2b,589px 351px #ffffff4d,1299px 1487px #ffffff6b,1261px 102px #fff3,748px 105px #ffffff7a,20px 40px #ffffff26,842px 1728px #ffffff75,35px 57px #ffffff75,975px 2042px #ffffff7d,1317px 1621px #ffffff80,855px 928px #ffffff4f,719px 1174px #ffffff75,194px 449px #ffffff36,756px 66px #ffffff47,286px 1281px #fff6,816px 2005px #ffffff4d,1210px 1256px #ffffff6e,1395px 118px #ffffff1c,1477px 1717px #ffffff24,1130px 1076px #ffffff4f,820px 212px #fff3,1484px 2020px #ffffff1f,400px 1264px #ffffff73,214px 1767px #ffffff61,950px 1610px #ffffff30,1303px 925px #ffffff63,540px 2067px #ffffff59,755px 534px #ffffff78,1045px 1801px #ffffff4f,1468px 1608px #ffffff1c,1433px 1700px #ffffff6b,1097px 1221px #ffffff63,1072px 1172px #ffffff38,246px 1920px #ffffff7a,540px 2048px #ffffff4f,765px 1525px #ffffff2e,1180px 603px #ffffff61,39px 0 #ffffff75,1376px 655px #ffffff21,264px 844px #ffffff80,866px 515px #ffffff2e,1003px 119px #ffffff78,222px 1822px #ffffff59,1443px 76px #ffffff36,879px 846px #ffffff1f,798px 715px #ffffff75,563px 1595px #ffffff4d,647px 1479px #ffffff63,149px 572px #ffffff4a,1494px 379px #ffffff38,1495px 1037px #ffffff59,498px 2074px #ffffff42,875px 2020px #ffffff21,1006px 820px #ffffff59;animation:bk-amb-drift 240s linear infinite}.bk-amb--stars .bk-amb__star-2{box-shadow:344px 935px #ffffff40,404px 705px #ffffff6b,1384px 1915px #ffffff5c,584px 606px #ffffff85,1393px 1453px #ffffff78,155px 1554px #ffffff7d,1px 1350px #ffffff3d,876px 225px #ffffff61,314px 1052px #ffffff70,1233px 1232px #ffffff1c,914px 1210px #ffffff21,819px 577px #ffffff6e,744px 1151px #ffffff2b,658px 458px #ffffff57,132px 373px #ffffff80,1118px 1126px #ffffff78,1396px 643px #ffffff82,1487px 260px #ffffff73,50px 2050px #ffffff59,397px 560px #ffffff1a,1047px 1687px #ffffff5e,578px 1372px #ffffff4f,608px 837px #ffffff3d,1017px 1318px #ffffff40,812px 1062px #ffffff5c,80px 1725px #ffffff38,872px 1956px #ffffff63,225px 603px #ffffff61,1027px 1903px #ffffff7d,19px 590px #ffffff40,958px 332px #ffffff3d,1381px 560px #ffffff47,1349px 1244px #ffffff57,129px 2087px #ffffff21,146px 1950px #ffffff59,301px 273px #ffffff75,904px 971px #ffffff57,808px 1558px #ffffff42,16px 1917px #ffffff29,247px 1043px #ffffff40,408px 1670px #ffffff73,981px 984px #ffffff21,89px 582px #ffffff78,42px 1290px #ffffff21,140px 1215px #ffffff61,1362px 1029px #ffffff2e,746px 1868px #ffffff54,490px 428px #ffffff75,1360px 1807px #fff3,1348px 811px #ffffff61,324px 1835px #ffffff42,1487px 997px #ffffff38,323px 45px #fff3,796px 339px #ffffff45,592px 932px #ffffff40,1123px 421px #ffffff45,1249px 1625px #ffffff63,684px 96px #ffffff5c,957px 573px #ffffff69,1404px 710px #ffffff6e,490px 364px #ffffff21,487px 1773px #ffffff42,274px 938px #ffffff75,1149px 2048px #ffffff70,178px 1689px #ffffff4f,89px 1866px #ffffff4d,488px 1483px #ffffff61,678px 994px #ffffff40,312px 1938px #ffffff1a,1144px 1442px #ffffff4f,1347px 500px #fff6,861px 1026px #ffffff61,1157px 1229px #ffffff52,414px 1348px #ffffff69,1107px 1422px #ffffff24,995px 2021px #ffffff1c,673px 881px #ffffff5e,1261px 1830px #ffffff82,173px 1328px #ffffff2e,726px 373px #ffffff61,54px 1871px #ffffff61,212px 1656px #ffffff6b,217px 312px #ffffff57,636px 1037px #ffffff52,1030px 1237px #ffffff61,1354px 2096px #ffffff5c,508px 1649px #ffffff1c,832px 1140px #ffffff36,1340px 1350px #ffffff52,262px 2034px #ffffff24;animation:bk-amb-drift 150s linear infinite;opacity:.75}.bk-amb--stars .bk-amb__star-3{box-shadow:756px 475px #fff6,405px 716px #ffffff75,1322px 1475px #ffffff40,605px 952px #ffffff2b,1090px 1393px #ffffff47,276px 1265px #ffffff1c,842px 878px #ffffff61,1451px 1206px #ffffff6e,248px 1046px #ffffff7a,667px 803px #fff6,781px 1847px #ffffff70,945px 287px #ffffff57,1411px 949px #ffffff24,559px 157px #ffffff6b,1212px 244px #ffffff45,772px 1675px #ffffff24,33px 1592px #ffffff42,973px 1885px #ffffff26,1041px 1901px #ffffff6b,278px 1560px #ffffff40,1195px 1606px #ffffff70,212px 490px #ffffff26,478px 605px #ffffff1f,735px 1954px #ffffff4d,397px 1720px #ffffff29,103px 1036px #ffffff36,1003px 897px #ffffff1c,911px 1284px #ffffff3d,294px 1077px #ffffff4f,1214px 1044px #ffffff85,452px 1143px #ffffff5e,110px 123px #ffffff63,1393px 1400px #ffffff73,1301px 1483px #ffffff1f,19px 390px #ffffff3d,1035px 170px #ffffff38,723px 34px #ffffff54,929px 645px #ffffff3d,338px 917px #ffffff69,510px 769px #fff3,552px 1806px #ffffff63,248px 288px #ffffff61,1246px 103px #fff6,1490px 527px #ffffff5e,1336px 922px #ffffff38;animation:bk-amb-drift 90s linear infinite;opacity:.5}@keyframes bk-amb-drift{0%{transform:translateZ(0)}to{transform:translate3d(0,-1400px,0)}}.bk-sec--alt{background:var(--bg-alt);border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle)}@media(prefers-reduced-motion:reduce){.bk-amb--stars i{animation:none!important}}.book-root{min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}.book-root>header a{color:var(--text);font-family:var(--font-display)}.book-root>header a:hover{text-decoration:none}.bk-header{display:flex;align-items:baseline;justify-content:space-between;gap:var(--s-5);flex-wrap:wrap;max-width:var(--marketing-max);width:100%;margin:0 auto;padding:var(--s-2) var(--marketing-pad);position:relative;z-index:2}.bk-header__wordmark{display:inline-flex;align-items:center;gap:10px;min-height:40px;text-decoration:none}.bk-header__wordmark strong{font-family:var(--font-display);font-size:17px;font-weight:600;letter-spacing:-.1px}.bk-header__dot{width:7px;height:7px;border-radius:50%;background:var(--gold);flex:none}.bk-imprint{position:relative;overflow:hidden;background:var(--bg-deep);padding:clamp(20px,2.2vw,28px) 0 clamp(20px,2vw,24px);border-bottom:1px solid var(--border-subtle)}.bk-imprint:after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--mk-grad);opacity:.55}.bk-imprint__inner{position:relative;z-index:2;max-width:var(--marketing-max);margin:0 auto;padding:0 var(--marketing-pad);display:flex;flex-direction:column;align-items:center;text-align:center}.bk-imprint__eyebrow{margin-bottom:var(--s-4)}.bk-imprint__stage{position:relative;display:grid;place-items:center;margin-bottom:var(--s-4);flex:none}.bk-imprint__aura{position:absolute;width:230%;height:230%;background:radial-gradient(circle at 50% 46%,rgba(4,132,133,.22),rgba(106,98,220,.18) 44%,transparent 70%);filter:blur(6px);animation:bk-imprint-pulse 7s ease-in-out infinite;pointer-events:none}@keyframes bk-imprint-pulse{0%,to{opacity:.62;transform:scale(1)}50%{opacity:1;transform:scale(1.07)}}.bk-imprint__mark{position:relative;width:clamp(52px,6vw,84px);height:auto;animation:bk-imprint-float 7s ease-in-out infinite;filter:drop-shadow(0 6px 22px rgba(4,132,133,.34))}@keyframes bk-imprint-float{0%,to{transform:translateY(-6px)}50%{transform:translateY(6px)}}.bk-imprint__line{margin:0;max-width:30ch;font-family:var(--font-display);font-weight:300;font-size:clamp(24px,3.2vw,38px);line-height:1.16;letter-spacing:-.5px;color:var(--text)}.bk-imprint__line b{display:block;font-weight:700}.bk-imprint__meta{margin:var(--s-3) 0 0;max-width:80ch;font-size:var(--fs-body);line-height:1.55;color:var(--text-faint)}.bk-imprint .bk-imprint__link{display:inline-flex;align-items:center;gap:var(--s-2);margin-top:var(--s-4);padding:11px 18px;min-height:44px;border-radius:var(--r-lg);border:1px solid var(--border);background:transparent;color:var(--teal-bright);font-family:var(--font-sans);font-size:var(--fs-h3);font-weight:600;transition:border-color .25s var(--ease),background .25s var(--ease)}.bk-imprint .bk-imprint__link svg{width:14px;height:14px;flex:none;opacity:.8}.bk-imprint .bk-imprint__link:hover{background:#1dabae1a;border-color:#34d2d573;text-decoration:none}.bk-imprint .bk-imprint__link:focus-visible{outline:2px solid var(--border-focus);outline-offset:3px}@media(max-width:640px){.bk-imprint{padding:var(--s-5) 0 var(--s-4)}.bk-imprint__inner{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:flex-start;text-align:left;gap:var(--s-4)}.bk-imprint__stage{margin-bottom:0;flex:none}.bk-imprint__mark{width:48px}.bk-imprint__eyebrow{flex-basis:100%;margin-bottom:2px;letter-spacing:.2em}.bk-imprint__line{flex:1;min-width:0;max-width:none;font-size:22px;line-height:1.18}.bk-imprint__line b{display:inline}.bk-imprint__meta{flex-basis:100%;margin-top:0;max-width:none;font-size:var(--fs-body);line-height:1.5}.bk-imprint .bk-imprint__link{flex-basis:100%;max-width:max-content;margin:0 auto;justify-content:center;min-height:46px}}@media(prefers-reduced-motion:reduce){.bk-imprint__mark,.bk-imprint__aura{animation:none!important}}.bk-header__publisher{margin:0;font-size:var(--fs-body);line-height:1.5;color:var(--text);font-weight:500}.bk-header__publisher a{color:var(--text-secondary);text-decoration:none;font-weight:700;border-radius:2px}.bk-header__publisher a:hover{color:var(--text);text-decoration:underline}.bk-header__publisher a:focus-visible{outline:2px solid var(--border-focus);outline-offset:3px}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}#book-main{flex:1;max-width:var(--marketing-max);width:100%;margin:0 auto;padding:0 var(--marketing-pad)}.book-root:has(.mk-book) #book-main{max-width:none;padding:0}.mk-home.mk-book .mk-inner{max-width:var(--marketing-max);margin:0 auto;padding:0 var(--marketing-pad)}.book-root .mk-footer{display:block;width:100%;max-width:none;padding:0}.book-root .mk-footer__inner{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:var(--s-7);max-width:var(--marketing-max);margin:0 auto;padding:var(--s-9) var(--marketing-pad) var(--s-7)}.book-root .mk-footer__inner:where(.mk-footer__inner--storefront){grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr))}.book-root .mk-footer__brand span{max-width:34ch}.book-root .mk-footer__col-heading{font-size:var(--fs-xs)}.book-root .mk-footer__col a{display:inline-flex;align-items:center;align-self:flex-start;min-height:32px}.book-root .mk-footer__bottom a{color:var(--teal-bright)}.book-root #book-main a:not([class]){color:var(--teal-bright)}.mk-home{position:relative;z-index:1}.mk-home .mk-section{padding:var(--mk-section-y) 0}.mk-home .mk-inner{max-width:1080px;margin:0 auto}.mk-home.bk-library{--bk-col: 840px}.mk-home.bk-library .mk-inner{max-width:var(--bk-col)}.mk-home.bk-thanks .mk-inner,.mk-home.bk-verify .mk-inner{max-width:480px}.mk-home.mk-book{--bk-section-y: clamp(72px, 9vw, 120px);--bk-rhythm: calc(2 * var(--bk-section-y));--bk-cover-w: 260px;--fs-section: clamp(26px, 3.2vw, 40px);--fs-lead: clamp(17px, 1.5vw, 21px)}.mk-home.mk-book>.mk-section{padding:var(--bk-section-y) 0}.mk-book-hero__layout>div>:last-child{margin-bottom:0}.mk-eyebrow{font-size:var(--fs-xs);font-weight:600;letter-spacing:.28em;text-transform:uppercase;color:var(--teal-bright)}.mk-sechead{margin-bottom:var(--s-10);max-width:640px}.mk-sectitle{font-family:var(--font-display);font-weight:700;font-size:var(--fs-section);line-height:1.14;letter-spacing:-.5px;color:var(--text)}.mk-sectitle--eyebrow{font-size:var(--fs-xs);font-weight:600;letter-spacing:.28em;text-transform:uppercase;color:var(--teal-bright)}.mk-seclead{margin-top:var(--s-4);font-size:var(--fs-lead);color:var(--text-secondary);line-height:1.65;max-width:52ch}.btn{display:inline-flex;align-items:center;gap:var(--s-2);padding:var(--s-3) var(--s-5);border-radius:var(--r-pill);font-size:var(--fs-body);font-weight:600;border:none;font-family:inherit;cursor:pointer}.btn--ghost{color:var(--text);border:1px solid var(--border-strong);background:transparent}.btn--ghost:hover{background:var(--surface-2);text-decoration:none}.btn--cta{color:var(--text-on-accent);background:var(--gradient-cta);box-shadow:var(--shadow-cta)}.btn--cta:hover{background:var(--gradient-cta-hover);text-decoration:none}.btn:disabled{opacity:.55;cursor:not-allowed}.mk-cta-lg{padding:var(--s-4) var(--s-8);font-size:var(--fs-h3)}.mk-book-buy{min-height:56px;padding:var(--s-4) 40px;font-size:16px}.mk-home.mk-book>.mk-book-hero{padding-top:clamp(24px,3vw,40px)}.mk-book-hero__h1{font-family:var(--font-display);font-weight:300;font-size:var(--mk-fs-kicker);line-height:1.12;letter-spacing:-.9px;max-width:14ch;margin:var(--s-4) 0 0;color:var(--text)}.mk-book-hero__h1 b{font-weight:700}.mk-book-blurb{color:var(--text-secondary);font-size:var(--fs-lead);line-height:1.65;max-width:60ch}.mk-book-blurb+.mk-book-blurb{margin-top:var(--s-4)}.mk-book-hero__layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:var(--s-10);align-items:start}.mk-book-hero__cover{display:block;position:relative;width:var(--bk-cover-w);min-height:calc(var(--bk-cover-w) * 1.6);perspective:1200px}.mk-book-hero__cover:before{content:"";position:absolute;top:-18%;right:-22%;bottom:-18%;left:-22%;background:radial-gradient(ellipse at 50% 46%,var(--gold-18),rgba(29,171,174,.1) 46%,transparent 72%);filter:blur(10px);pointer-events:none;z-index:0}.mk-book-hero__cover:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;background:linear-gradient(107deg,#fff0 38%,#ffffff1a,#fff0 58%);z-index:2}.mk-book-cover{position:relative;z-index:1;border-radius:4px;box-shadow:0 34px 70px -24px #000000e6,0 4px 14px #0000008c,0 0 58px -12px var(--gold-28),0 0 0 1px #d4bd8238;transform:rotateY(-7deg) rotateX(2deg);transform-origin:center;transition:transform .55s var(--ease),box-shadow .55s var(--ease);width:var(--bk-cover-w);height:auto}.mk-book-hero__cover:hover .mk-book-cover{transform:rotateY(-2deg) rotateX(0) translateY(-6px);box-shadow:0 44px 90px -24px #000000eb,0 4px 14px #0000008c,0 0 76px -10px var(--gold-28),0 0 0 1px #d4bd8257}.mk-sechead--center{max-width:none;text-align:center;margin-inline:auto}.mk-book-facts__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--s-5)}.mk-book-fact{position:relative;overflow:hidden;padding:var(--s-8) var(--s-6);border:1px solid var(--mk-hairline);border-radius:var(--r-xl);background:var(--mk-card-wash);transition:transform .4s var(--ease),border-color .4s ease,box-shadow .4s ease}.mk-book-fact:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--mk-grad);opacity:0;transition:opacity .4s ease}.mk-book-fact:hover{transform:translateY(-6px);border-color:var(--border-strong);box-shadow:var(--shadow-pop)}.mk-book-fact:hover:before{opacity:1}.mk-book-fact__ico{width:46px;height:46px;border-radius:var(--r-lg);display:grid;place-items:center;margin-bottom:var(--s-5);background:radial-gradient(circle at 30% 25%,var(--gold-18),var(--teal-12));border:1px solid var(--border);color:var(--gold)}.mk-book-fact__ico svg{width:22px;height:22px}.mk-book-fact__k{font-size:var(--fs-xs);font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--text-faint);margin:0 0 var(--s-2)}.mk-book-fact__v{font-family:var(--font-display);font-size:19px;font-weight:700;line-height:1.3;margin:0 0 var(--s-3);color:var(--text)}.mk-book-fact__n{margin:0;font-size:var(--fs-body);line-height:1.62;color:var(--text-secondary)}@media(max-width:900px){.mk-book-facts__grid{grid-template-columns:1fr 1fr}}@media(max-width:640px){.mk-book-facts__grid{grid-template-columns:1fr;gap:var(--s-3)}.mk-book-fact{padding:var(--s-6)}}.mk-book-buy-sec{scroll-margin-top:var(--bk-section-y)}.mk-book-editions{border:0;padding:0;margin:0 0 var(--s-6)}.mk-book-editions__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--s-5)}.mk-book-edition{position:relative;overflow:hidden;display:block;cursor:pointer;padding:var(--s-6) var(--s-5);border:1px solid var(--border);border-radius:var(--r-xl);background:var(--surface-3);transition:transform .4s var(--ease),border-color .3s ease,box-shadow .3s ease,background .3s ease}.mk-book-edition:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--mk-grad-teal);opacity:0;transition:opacity .3s ease}.mk-book-edition:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:var(--shadow-pop)}.mk-book-edition__radio{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:0;margin:0;cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none}.mk-book-edition__tick{position:absolute;top:var(--s-5);right:var(--s-5);width:20px;height:20px;border-radius:50%;border:1.5px solid var(--border-strong);display:grid;place-items:center;transition:border-color .25s ease,background .25s ease}.mk-book-edition__tick:after{content:"";width:9px;height:9px;border-radius:50%;background:var(--teal-bright);transform:scale(0);transition:transform .25s var(--ease)}.mk-book-edition__label{display:block;font-family:var(--font-display);font-size:17px;font-weight:700;color:var(--text);margin-bottom:6px;padding-right:26px}.mk-book-edition__title{display:block;font-size:var(--fs-body);line-height:1.5;color:var(--text-secondary)}.mk-book-edition--selected,.mk-book-edition:has(input:checked){border-color:#34d2d58c;background:linear-gradient(180deg,var(--teal-12),var(--surface-3))}.mk-book-edition--selected:before,.mk-book-edition:has(input:checked):before{opacity:1}.mk-book-edition--selected .mk-book-edition__tick,.mk-book-edition:has(input:checked) .mk-book-edition__tick{border-color:var(--teal-bright);background:#1dabae24}.mk-book-edition--selected .mk-book-edition__tick:after,.mk-book-edition:has(input:checked) .mk-book-edition__tick:after{transform:scale(1)}.mk-book-edition:has(input:focus-visible){outline:2px solid var(--teal-bright);outline-offset:3px}.mk-book-confirm{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:center;gap:var(--s-2) var(--s-4);margin:0 0 var(--s-6);padding:var(--s-5) var(--s-6);border:1px solid var(--border);border-left:2px solid var(--gold);border-radius:var(--r-lg);background:var(--card-wash)}.mk-book-confirm__k{margin:0;font-size:var(--fs-xs);font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--text-faint)}.mk-book-confirm dd{margin:0}.mk-book-selected{font-size:var(--fs-h3);color:var(--text)}.mk-book-selected b{font-weight:600}.mk-book-confirm__note{flex-basis:100%;text-align:center;font-size:var(--fs-body);line-height:1.55;color:var(--text-muted)}.mk-book-format-note{font-size:var(--fs-sm);color:var(--text-muted);margin:0 0 var(--s-6)}.mk-book-notice{font-size:var(--fs-sm);color:var(--text-secondary);border-left:2px solid var(--teal);padding:var(--s-1) 0 var(--s-1) var(--s-1);margin:var(--s-1) 0 var(--s-6);max-width:52ch}.mk-book-buy{margin-bottom:var(--s-5)}.mk-book-buy [data-price-divergence]{white-space:nowrap}.mk-book-hero__copy{display:flex;flex-direction:column;align-items:flex-start}.mk-book-hero__lead{margin:var(--s-4) 0 0;max-width:26ch;font-family:var(--font-display);font-weight:300;font-size:var(--fs-lead);line-height:1.5;letter-spacing:-.2px;color:var(--text)}.mk-book-hero__lead b{font-weight:700}.mk-book-hero__ask{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s-4) var(--s-5);margin-top:var(--s-6)}.mk-book-hero__price{--bk-fs-price: clamp(26px, 2.4vw, 34px);font-family:var(--font-display);font-weight:700;font-size:var(--bk-fs-price);line-height:1;letter-spacing:-.5px;color:var(--gold);margin:0}.mk-book-hero__cur{font-size:.62em;font-weight:600;color:var(--text-faint);margin-left:var(--s-2);letter-spacing:.14em}.mk-book-hero__jump{display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:13px 26px;border-radius:var(--r-pill);background:var(--gold-12);border:1px solid var(--gold-28);color:var(--gold-soft);font-size:15px;font-weight:600;transition:background .25s ease,border-color .25s ease,transform .25s var(--ease)}.mk-book-hero__jump svg{width:15px;height:15px;flex:none}.mk-book-hero__jump:hover{background:var(--gold-18);border-color:var(--gold);text-decoration:none;transform:translateY(-2px)}.mk-book-hero__jump:focus-visible{outline:2px solid var(--border-focus);outline-offset:3px}.mk-book-buy__jump{display:inline-flex;align-items:center;min-height:44px;margin:0;padding:var(--s-2) 0;color:var(--teal-bright);font-size:var(--fs-h3);font-weight:600;text-decoration:underline}.mk-book-buy__jump:hover{color:var(--text)}.mk-book-buy__jump:focus-visible{outline:2px solid var(--border-focus);outline-offset:3px}.mk-book-buy__row{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:var(--s-5) var(--s-6)}.mk-book-terms{font-size:var(--fs-body);line-height:1.66;color:var(--text-muted);margin:var(--s-7) auto 0;max-width:74ch;text-align:center}.mk-book-terms a{color:var(--teal-bright);text-decoration:underline;text-underline-offset:2px}.mk-book-elsewhere{font-size:var(--fs-body);line-height:1.6;color:var(--text-faint);font-style:italic;text-align:center;max-width:74ch;margin:var(--s-5) auto 0}.mk-book-elsewhere a{color:var(--teal-bright)}.mk-form-error{font-size:var(--fs-xs);color:var(--danger);margin:0}.mk-book-author{max-width:none;text-align:center}.mk-book-author__head{position:relative;display:inline-grid;place-items:center;margin-bottom:var(--s-6)}.mk-book-author__ring{position:absolute;top:-4px;right:-4px;bottom:-4px;left:-4px;border-radius:50%;background:var(--mk-grad);opacity:.85}.mk-book-author__ring:after{content:"";position:absolute;top:3px;right:3px;bottom:3px;left:3px;border-radius:50%;background:var(--bg)}.mk-book-author__portrait{position:relative;width:112px;height:112px;border-radius:50%;object-fit:cover;object-position:50% 22%;flex:none}.mk-book-author__name{font-family:var(--font-display);font-weight:700;font-size:21px;color:var(--text);margin:0 0 6px}.mk-book-author__standing{font-size:var(--fs-body);font-weight:600;letter-spacing:.02em;color:var(--teal-bright);margin:0 0 var(--s-7)}.mk-book-author__body{color:var(--text-secondary);font-size:17px;line-height:1.72;max-width:60ch;margin:0 auto var(--s-5)}.mk-book-author__body:last-child{margin-bottom:0}.mk-book-sample-sec{scroll-margin-top:var(--bk-section-y)}.mk-book-sample-sec .mk-sechead{margin-bottom:var(--s-7)}.mk-book-sample__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s-5)}.mk-book-sample__card{display:flex;flex-direction:column;align-items:flex-start;gap:var(--s-4);padding:var(--s-8) var(--s-7);border:1px solid var(--border);border-radius:var(--r-xl);background:var(--card-wash);transition:transform .4s var(--ease),border-color .4s ease,box-shadow .4s ease}.mk-book-sample__card:hover{transform:translateY(-6px);border-color:var(--border-strong);box-shadow:var(--shadow-pop)}.mk-book-sample__fmt{font-size:var(--fs-xs);font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}.mk-book-sample__what{font-family:var(--font-display);font-size:18px;font-weight:700;color:var(--text);margin:0}.mk-book-sample__n{margin:0;font-size:var(--fs-body);line-height:1.6;color:var(--text-secondary);flex:1}.mk-book-sample__note{margin:var(--s-6) auto 0;font-size:var(--fs-body);color:var(--text-faint);text-align:center}.mk-book-sample__card .btn--ghost{min-height:48px;padding:var(--s-3) var(--s-6);gap:9px;font-size:var(--fs-h3)}.mk-book-sample__card .btn--ghost svg{width:15px;height:15px;flex:none;color:var(--teal-bright)}.mk-book-sample__card .btn--ghost:hover{border-color:#34d2d580}.mk-form-card{background:var(--surface-2);border:1px solid 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#d4bd8238}.mk-book-hero__jump{transition:none}.mk-book-hero__jump:hover{transform:none}.bk-buybar{transform:translateY(0);position:static;box-shadow:none;transition:none}.bk-buybar:not(.is-on){display:none}.bk-buybar__cta{transition:none}.bk-buybar__cta:hover{transform:none;box-shadow:var(--shadow-cta)}}.bk-checkout{margin:var(--s-6) 0 var(--s-5);min-height:450px}.bk-checkout__status{font-size:var(--fs-sm);color:var(--text-secondary);margin:0 0 var(--s-3)}.bk-checkout-frame{width:100%;min-width:312px}.mk-book-about{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:var(--s-10);align-items:start}.mk-book-about__title{margin:0;margin-top:var(--s-3)}.mk-book-about__thin{font-weight:300}.mk-book-about__body{min-width:0}.mk-book-about__p{margin:0 0 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0}}.bk-contact__lead{font-size:clamp(16px,.6vw + 14.5px,19px);line-height:1.6;color:var(--text);margin:0 0 var(--s-7)}.bk-doc a.bk-contact__mailto{display:inline-flex;align-items:center;min-height:44px;padding:0 var(--s-6);border-radius:var(--r-pill);background:var(--gradient-cta);color:var(--text-on-accent);font-weight:600;text-decoration:none;box-shadow:var(--shadow-cta)}.bk-doc a.bk-contact__mailto:hover{background:var(--gradient-cta-hover);text-decoration:none}@media(max-width:640px){.bk-doc{padding:var(--s-7) var(--s-4) var(--s-9)}.bk-doc__meta{grid-template-columns:minmax(0,1fr);gap:var(--s-1) 0}.bk-doc__meta dt{margin-top:var(--s-3)}}