:root{--navy:#071829;--navy-deep:#061322;--navy-raised:#0d2638;--teal:#65d0c7;--teal-deep:#1f8790;--orange:#f5822b;--ink:#f2f7fa;--muted:#a8becc;--edge:rgba(153,215,223,.19)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body.library-page{background:linear-gradient(155deg,#0b2032 0,#071729 43%,#051322 100%);font-family:Inter,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;margin:0;color:var(--ink);-webkit-font-smoothing:antialiased;min-height:100vh}a{color:inherit}button,select,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--orange);outline-offset:3px}.container{width:min(1250px,calc(100% - 68px));margin:auto}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.brand-rule{height:3px;background:linear-gradient(90deg,#f5822b,#eb8a33 42%,#277e8d 80%,#65d0c7)}
.site-header{position:sticky;top:0;z-index:80;background:rgba(5,19,33,.95);border-bottom:1px solid rgba(137,197,208,.16);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}.header-inner{width:min(1430px,calc(100% - 48px));margin:auto;min-height:88px;display:flex;align-items:center;gap:clamp(12px,2vw,27px)}.brandmark{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0}.brandmark img{width:47px;height:47px;object-fit:contain}.brandtype strong{display:block;color:white;letter-spacing:.17em;font-size:15px;font-weight:820}.brandtype small{display:block;margin-top:5px;color:#78d4d2;letter-spacing:.08em;font-size:9px;font-weight:760}.site-nav{display:flex;gap:clamp(8px,1.5vw,23px);margin-left:auto;align-items:center}.site-nav a{text-decoration:none;white-space:nowrap;font-size:clamp(10px,.93vw,12px);color:#d1e0e8;font-weight:650}.site-nav a:hover{color:#7be1d5}.site-cta{margin-left:5px;text-decoration:none;white-space:nowrap;padding:13px 16px;border:1px solid #de843d;border-radius:5px;color:#fff;font-weight:740;font-size:11px;background:linear-gradient(135deg,rgba(192,91,29,.17),rgba(230,112,35,.09))}.site-cta span{color:var(--orange)}.menu-toggle{display:none;margin-left:auto;background:#103044;border:1px solid #477482;color:#f1f8fa;border-radius:7px;padding:8px 14px}.mobile-menu{padding:12px 28px 28px;border-top:1px solid var(--edge);display:grid;gap:10px;background:#091b2c}.mobile-menu[hidden]{display:none}.mobile-menu a{text-decoration:none;color:#e2ecf1;padding:7px 0}
.hero{min-height:630px;display:grid;grid-template-columns:minmax(0,.93fr) minmax(0,1.07fr);align-items:center;gap:clamp(20px,4vw,70px);padding:64px 0 72px;position:relative}.eyebrow{font-size:11px;font-weight:780;letter-spacing:.17em;color:var(--teal);text-transform:uppercase}.hero h1{font-size:clamp(42px,5.1vw,76px);line-height:1.09;letter-spacing:-.054em;font-weight:650;margin:22px 0 22px;color:#f5f8f9;max-width:760px}.hero h1 em{font-style:normal;color:#94d9d2}.hero p{line-height:1.86;font-size:16px;color:#bed1db;max-width:535px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:31px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 19px;border-radius:7px;border:1px solid #518393;background:rgba(18,54,73,.58);text-decoration:none;color:#e7f2f4;font-weight:650;font-size:13px;transition:background .2s,transform .25s,border-color .2s}.btn:hover{transform:translateY(-2px);background:rgba(31,90,105,.65);border-color:#75c7c5}.btn-primary{background:linear-gradient(105deg,#ec8c41,#f5822b);color:#0d1a26;border-color:#faad63;font-weight:760}.btn-primary:hover{background:#ffad62;border-color:#ffc68f}.btn-small{padding:10px 14px;font-size:12px}.hero-proof{display:flex;gap:26px;flex-wrap:wrap;margin-top:35px;border-top:1px solid var(--edge);padding-top:21px}.hero-proof span{color:#a7c2cf;font-size:12px}.hero-proof strong{color:white;font-weight:760;font-size:14px}.hero-art{position:relative;isolation:isolate;min-height:535px;display:grid;align-items:center;justify-items:center}.hero-art:before{content:'';position:absolute;width:100%;height:83%;top:6%;left:0;border-radius:50%;background:radial-gradient(ellipse at 52% 54%,rgba(74,222,205,.14) 0%,rgba(50,176,169,.075) 36%,transparent 68%);filter:blur(19px);z-index:-1;animation:hero-breathe 11s ease-in-out infinite alternate}.hero-art:after{content:'';position:absolute;inset:16% 0 7%;border:1px solid rgba(90,205,199,.045);border-radius:50%;z-index:-1;box-shadow:0 0 88px 14px rgba(35,144,153,.055)}.hero-art img{display:block;width:min(106%,720px);height:auto;object-fit:contain;filter:drop-shadow(0 25px 26px rgba(0,0,0,.28))}.hero-caption{position:absolute;bottom:0;right:5%;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#77aaaa}@keyframes hero-breathe{from{opacity:.65;transform:scale(.96)}to{opacity:1;transform:scale(1.045)}}
.section-band{border-top:1px solid var(--edge);padding:82px 0 95px}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px}.section-head h2{font-size:clamp(32px,3.9vw,50px);letter-spacing:-.046em;font-weight:630;line-height:1.15;margin:12px 0 12px}.section-head p{max-width:655px;color:#a9c0cc;line-height:1.73;margin:0;font-size:14px}.section-index{display:block;color:#6ed4cd;letter-spacing:.19em;font-size:11px;font-weight:780}.signal{display:inline-flex;align-items:center;gap:8px;font-size:11px;color:#b8d9da;border:1px solid rgba(117,198,194,.25);border-radius:40px;padding:8px 12px;background:rgba(35,94,103,.13);white-space:nowrap}.signal i{width:6px;height:6px;background:#74dbd0;border-radius:100%;box-shadow:0 0 10px #5dded2}
/* Preserve original V9 three-dimensional shelf, not an image approximation */
.shelf3d{margin-top:10px}.shelf3d-shell{border-radius:18px!important;background:radial-gradient(ellipse at 49% 37%,#173c4b 0%,#0c2637 40%,#071829 80%)!important;box-shadow:0 38px 90px rgba(0,0,0,.26)!important}.shelf3d-stage{height:450px}.shelf3d-details{background:rgba(10,37,52,.72)!important;backdrop-filter:blur(12px)}.shelf3d-heading{padding-top:25px}.shelf3d-read{border-radius:6px!important;background:linear-gradient(95deg,#e78637,#f59443)!important;color:#0b1d29!important;border:1px solid #d88f5b!important;text-decoration:none;padding:13px 17px;font-weight:760}.shelf3d-flip{background:rgba(13,58,70,.7)!important;color:#edfaff!important;border:1px solid #64a5a9!important;padding:12px 15px;border-radius:6px}
.audio-lab{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:35px;padding:28px 32px;border:1px solid rgba(120,205,210,.23);border-radius:14px;background:linear-gradient(130deg,rgba(13,48,64,.76),rgba(7,27,40,.65));margin-top:35px}.audio-lab h3{font-size:22px;margin:9px 0;color:#f5f9fc}.audio-lab p{font-size:12px;color:#a9c4cf;line-height:1.6;margin:0}.audio-lab audio{width:100%;accent-color:#6ecbc2}.audio-source{font-size:11px!important;margin-top:8px!important;color:#6bcfcb!important}
.progress-band{padding:26px 0 70px}.progress-shell{border:1px solid rgba(131,208,210,.19);background:linear-gradient(115deg,rgba(14,42,58,.76),rgba(9,28,42,.74));border-radius:16px;display:grid;grid-template-columns:1fr 1fr 1.3fr;gap:23px;align-items:center;padding:26px 36px}.progress-item{display:flex;gap:20px;align-items:center}.radial{width:110px;height:110px;flex:0 0 110px;display:grid;place-items:center;position:relative;border-radius:50%;background:conic-gradient(#5bc7c1 var(--p,0%),rgba(123,183,196,.12) var(--p,0%));box-shadow:0 0 24px rgba(76,204,203,.12),inset 0 0 9px #082b3a;border:1px solid #5bcacb39;transition:background 1.4s ease}.radial:before{content:'';position:absolute;inset:9px;border-radius:50%;background:linear-gradient(160deg,rgba(16,49,65,.94),rgba(7,28,40,.96));border:1px solid rgba(167,225,228,.14);backdrop-filter:blur(14px)}.radial span{position:relative;z-index:2;font-weight:770;font-size:23px;color:#f8fefe}.progress-copy strong{display:block;font-size:16px;color:#f0f8fb}.progress-copy p{font-size:12px;line-height:1.6;color:#9dbcc9;max-width:215px}.progress-copy button{border:1px solid #437a81;background:#0e3545;color:#bfe9e3;border-radius:6px;font-size:11px;padding:8px 10px}.progress-context{border-left:1px solid var(--edge);padding-left:23px}.progress-context .eyebrow{font-size:10px}.progress-context h3{font-size:24px;margin:11px 0;font-weight:550}.progress-context p{color:#a1bccc;font-size:12px;line-height:1.7;margin:0}.progress-context .notice{font-size:10px;color:#77a1b0;margin-top:10px}
.free-section{background:linear-gradient(180deg,#091d2d 0%,#071929 100%)}.free-catalogue{display:flex;gap:21px;overflow-x:auto;padding:7px 3px 30px;scrollbar-color:#367b84 transparent;scroll-snap-type:x mandatory;overscroll-behavior-inline:contain}.article-card{flex:0 0 clamp(205px,22vw,245px);scroll-snap-align:start;min-width:0;display:flex;flex-direction:column;padding:0 0 18px;border-bottom:1px solid rgba(143,215,215,.27);transition:transform .2s}.article-card:hover{transform:translateY(-4px)}.article-art{display:grid;place-items:center;min-height:292px;padding:0 9px}.article-art img{height:292px;width:100%;object-fit:contain;filter:drop-shadow(0 14px 13px rgba(0,0,0,.24))}.article-kicker{font-size:10px;color:#6dd0c9;letter-spacing:.12em;text-transform:uppercase;margin:13px 0 8px;font-weight:750}.article-card h3{font-size:17px;font-weight:640;line-height:1.4;margin:0 0 15px;min-height:73px}.article-actions{margin-top:auto;display:flex;gap:14px;flex-wrap:wrap}.article-actions a{font-size:12px;text-decoration:none;color:#d4f0ed;border-bottom:1px solid rgba(120,200,195,.48);padding-bottom:5px}.article-actions a:hover{color:#f9b16d}.carousel-controls{display:flex;align-items:center;gap:8px}.arrow-button{width:43px;height:43px;border-radius:50%;display:grid;place-items:center;border:1px solid rgba(131,193,199,.45);background:rgba(22,61,78,.45);color:#fff;font-size:23px}.arrow-button:hover{background:rgba(39,125,130,.45)}.article-search{background:#0a2738;border:1px solid #3f6f7b;border-radius:7px;color:white;padding:12px 16px;min-width:min(280px,100%);font-size:13px}.article-search::placeholder{color:#819eaa}.catalogue-tools{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;margin:-9px 0 24px}.catalogue-count{font-size:12px;color:#94b7c1}
.membership-band{padding:70px 0 84px;border-top:1px solid var(--edge);background:radial-gradient(ellipse at 75% 50%,rgba(35,109,115,.13),transparent 50%)}.membership-grid{display:grid;grid-template-columns:1.13fr 1fr;gap:55px;align-items:center}.membership-grid h2{font-size:clamp(30px,3.4vw,46px);letter-spacing:-.04em;margin:12px 0 20px}.membership-grid p{line-height:1.8;color:#a6c2cf;max-width:610px}.membership-panel{border:1px solid rgba(140,217,213,.26);border-radius:16px;padding:32px;background:linear-gradient(135deg,rgba(25,68,81,.5),rgba(9,34,49,.85))}.membership-panel strong{font-size:21px}.membership-panel .subtle{font-size:12px;color:#adc6d0;line-height:1.7}.membership-panel .btn{margin-top:17px}
/* Exact footer structure from V9 source. */
.site-footer{background:#102334;color:#e0e9f2;border-top:1px solid #17485d}.footer-inner{display:grid;grid-template-columns:minmax(180px,1.5fr) repeat(5,minmax(120px,1fr));gap:clamp(15px,2.2vw,37px);padding:42px clamp(23px,3.5vw,54px) 61px}.brand-logos-footer{display:flex;align-items:center;gap:11px;margin-bottom:20px}.brand-logos-footer a{display:inline-flex;align-items:center}.brand-logos-footer img{width:38px;height:38px;object-fit:contain}.footer-brand{color:#fff;font-size:17px;font-weight:820;letter-spacing:.19em;margin-bottom:2px}.footer-subtitle{font-weight:760;font-size:13px;color:#fff}.footer-intro p{font-size:13px;color:#e0e8f0;line-height:1.74;max-width:330px;margin:23px 0 22px}.footer-socials{display:flex;flex-direction:column;align-items:flex-start;gap:16px;margin-top:20px}.footer-socials a{display:inline-flex;align-items:center;gap:13px;font-weight:730;color:#eef5f9;text-decoration:none;font-size:13px}.footer-social-icon{display:block;flex:0 0 34px;width:34px;height:34px;object-fit:contain}.footer-socials a:hover,.footer-column a:hover,.footer-policies a:hover{color:#86e8ea;text-decoration:underline;text-underline-offset:3px}.footer-column{display:flex;flex-direction:column;gap:13px;font-size:13px;line-height:1.48}.footer-column h3{color:#fff;margin:0 0 2px;font-size:13px;font-weight:850}.footer-column a{color:#edf3f9;text-decoration:none;overflow-wrap:anywhere}.footer-column .footer-strong-link{font-weight:780;margin-top:3px}.footer-bottom{display:flex;justify-content:space-between;align-items:end;gap:30px;border-top:1px solid #2b475b;padding:24px clamp(23px,3.5vw,54px) 28px;color:#becbd6;font-size:11px;line-height:1.7}.footer-legal p{margin:0 0 7px}.footer-legal small{font-size:10px}.footer-policies{display:flex;gap:16px;flex-wrap:wrap;align-items:center;justify-content:flex-end;padding-bottom:16px}.footer-policies a{color:#fff;text-decoration:none;font-size:11px}
/* free full-text reader */
.reader-shell{padding:55px 0 70px;max-width:1120px}.reader-heading{display:flex;align-items:start;gap:32px;justify-content:space-between;padding:5px 0 28px}.reader-heading h1{font-size:clamp(32px,4vw,52px);letter-spacing:-.045em;line-height:1.14;margin:12px 0}.reader-heading p{color:#b3c9d3;font-size:13px;line-height:1.7;max-width:630px}.reader-meter{width:90px;height:90px;flex-basis:90px}.reader-meter span{font-size:19px}.reader-toolbar{position:sticky;z-index:30;top:91px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 16px;background:rgba(14,42,57,.97);border:1px solid #477e86;border-radius:10px;box-shadow:0 10px 30px #0003}.reader-toolbar button,.reader-toolbar select,.reader-toolbar a{padding:9px 12px;border:1px solid #517f85;border-radius:6px;background:#103344;color:#edf7f7;text-decoration:none;font-size:12px}.reader-toolbar button.primary{background:var(--orange);border-color:#f8ab6c;color:#09202b;font-weight:750}.reader-toolbar label{display:flex;gap:6px;align-items:center;color:#b7d7dd;font-size:11px}.reader-toolbar select{padding:8px}.reading-status{font-size:12px;color:#9fcad0;margin:13px 0 23px}.doc{background:#f8faf9;color:#27323b;border-radius:12px;padding:clamp(25px,5vw,70px);box-shadow:0 25px 72px #0002;line-height:1.92;font-size:17px;font-family:Georgia, 'Times New Roman', serif;max-width:1020px}.doc p{margin:0 0 1.25em}.doc p:first-child{font-size:20px}.reader-pdf{background:#fff;border-radius:12px;padding:14px;display:none}.reader-pdf iframe{width:100%;height:76vh;border:0}#pdfpane{display:none}.reader-footnote{font-size:11px;color:#8eabb9;margin:18px 0}.back-to-library{color:var(--teal);text-decoration:none;font-weight:660;font-size:12px}.back-to-library:hover{text-decoration:underline}
@media(max-width:1280px){.site-nav{gap:10px}.site-nav a{font-size:10px}.site-cta{font-size:10px;padding:11px 13px}.header-inner{width:calc(100% - 36px)}}
@media(max-width:1080px){.site-nav{display:none}.menu-toggle{display:block}.hero{grid-template-columns:1fr 1fr}.progress-shell{grid-template-columns:1fr 1fr}.progress-context{grid-column:1/-1;border-left:0;border-top:1px solid var(--edge);padding:18px 0 0}.footer-inner{grid-template-columns:repeat(3,minmax(0,1fr));column-gap:26px;row-gap:36px}.footer-intro{grid-row:span 2}}
@media(max-width:760px){.container{width:min(100% - 32px,1250px)}.hero{grid-template-columns:1fr;padding:48px 0 50px;gap:10px}.hero-art{min-height:260px}.hero-art img{max-width:570px}.hero-caption{display:none}.hero h1{font-size:clamp(43px,9vw,60px)}.hero-proof{gap:15px}.section-band{padding:58px 0}.section-head{align-items:start}.section-head h2{font-size:36px}.signal{display:none}.audio-lab{grid-template-columns:1fr;padding:22px}.progress-shell{grid-template-columns:1fr;gap:20px;padding:22px}.progress-context{grid-column:auto}.footer-inner{grid-template-columns:1fr 1fr;gap:30px 25px;padding:34px 24px 47px}.footer-intro{grid-column:span 2;grid-row:auto}.footer-bottom{flex-direction:column;align-items:start;padding:24px}.footer-policies{justify-content:flex-start}.reader-toolbar{top:76px;max-height:40vh;overflow:auto}.reader-heading{gap:12px}.reader-shell{padding-top:32px}.reader-heading h1{font-size:33px}.reader-meter{display:none}.doc{font-size:16px}.shelf3d-stage{height:370px!important}}
@media(max-width:420px){.brandtype small{font-size:8px}.brandmark img{width:36px;height:36px}.site-cta{display:none}.article-card{flex-basis:210px}.hero-proof span{font-size:11px}.reader-toolbar{top:72px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}


/* V11.5 — premium four-book audio player, built into the restored V9 carousel */
.audio-library{margin-top:36px;padding:30px;position:relative;overflow:hidden;background:linear-gradient(128deg,rgba(14,48,65,.91),rgba(5,25,39,.96));border-radius:18px;border:1px solid rgba(120,198,205,.24);box-shadow:0 18px 45px rgba(0,0,0,.2)}
.audio-library:before{content:"";position:absolute;right:-12%;top:-70%;width:70%;height:180%;background:radial-gradient(ellipse,rgba(74,212,200,.09),transparent 65%);pointer-events:none}
.audio-head{display:flex;align-items:start;justify-content:space-between;gap:20px;position:relative}
.audio-head h3{font-size:clamp(26px,3vw,36px);letter-spacing:-.035em;margin:9px 0 9px;font-weight:610}
.audio-head p{font-size:13px;line-height:1.7;color:#a9c6cd;margin:0;max-width:650px}
.audio-book-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px;margin:28px 0 22px}
.audio-book-tab{border:1px solid rgba(108,184,188,.27);border-radius:9px;text-align:left;padding:12px 14px;background:rgba(11,40,56,.82);color:#bbd4df;font-weight:670;font-size:12px;min-height:57px;transition:.2s ease}
.audio-book-tab:hover{border-color:#80d7d0;color:white}.audio-book-tab.active{border-color:#71d7d0;background:linear-gradient(145deg,#173d4b,#164a53);color:#f9ffff;box-shadow:inset 0 0 0 1px rgba(118,217,207,.12)}
.audio-player-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;position:relative}
.audio-now{padding:26px;border-radius:12px;background:rgba(5,22,35,.68);border:1px solid rgba(140,197,201,.14)}
.audio-now h4{font-size:26px;letter-spacing:-.03em;line-height:1.2;margin:11px 0 7px;font-weight:620}
.audio-now .audio-subline{font-size:12px;color:#9bbcc7;margin:0 0 24px}
.audio-now audio{width:100%;display:block;color-scheme:dark;min-height:50px}
.audio-controls-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:16px}
.audio-controls-row button,.audio-controls-row select{border:1px solid #4a828a;background:#103b4e;border-radius:7px;color:#d9f3f1;font-weight:660;font-size:12px;padding:10px 11px}
.audio-controls-row button:hover{background:#195467}.audio-controls-row label{color:#bbd9db;font-size:12px}
.audio-controls-row #audio-reconnect{border-color:#d68d57;color:#ffe5c5;background:rgba(123,69,33,.15)}
.audio-smallprint{font-size:11px!important;line-height:1.65!important;color:#7fa7b3!important;margin-top:18px!important}
.audio-track-panel{border:1px solid rgba(130,190,198,.16);border-radius:12px;background:rgba(6,23,37,.62);overflow:hidden}
.audio-track-panel-head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid rgba(143,206,207,.16)}
.audio-track-panel-head strong{font-size:14px}.audio-track-panel-head small{color:#8aaeba;font-size:10px}
.audio-track-list{max-height:350px;overflow-y:auto;scrollbar-color:#377b81 transparent;padding:8px}
.audio-track{display:grid;grid-template-columns:25px 1fr 17px;gap:11px;align-items:center;text-align:left;width:100%;padding:12px;border:1px solid transparent;border-radius:7px;color:#bed4de;background:transparent;font-size:12px}
.audio-track:hover{background:rgba(30,83,91,.38)}.audio-track.active{background:rgba(53,119,121,.22);border-color:rgba(100,194,189,.4);color:white}
.audio-track-num{font-size:10px;color:#72b7ba}.audio-track-state{color:#65d0c7;text-align:right}
.shelf3d-listen{background:rgba(15,69,78,.82)!important;color:#e0faf8!important;border:1px solid #5bc7c1!important;padding:12px 16px;border-radius:6px;font-size:13px;font-weight:740}
@media(max-width:820px){.audio-book-tabs{grid-template-columns:1fr 1fr}.audio-player-layout{grid-template-columns:1fr}.audio-library{padding:22px 16px}.audio-head .signal{display:none}}
@media(max-width:420px){.audio-book-tab{font-size:11px;min-height:60px}.audio-now{padding:17px}.audio-track-list{max-height:300px}}

/* prevent transformed 3D carousel from producing page-level horizontal scroll on phones */
html,body.library-page{max-width:100%;overflow-x:clip}


/* V11.6 — Fidelity restoration: PDF original pages, premium dual-shelf, Eich Dyn glass controls. */
:root {--navy:#071829;--teal:#65d0c7;--orange:#f5822b}
body.library-page{font-family:Inter,'Segoe UI',Arial,sans-serif}
.site-header{background:rgba(5,19,33,.97);border-bottom:1px solid rgba(122,203,212,.22)}
.site-header .site-cta,.btn,.shelf3d-list-button,.arrow-button,.audio-controls-row button,.audio-book-tab,.reader-toolbar button,.reader-toolbar select,.article-actions a{
 background:linear-gradient(140deg,rgba(87,169,176,.23),rgba(16,53,69,.47) 52%,rgba(8,32,49,.68))!important;
 border:1px solid rgba(138,223,216,.36)!important;
 box-shadow:inset 0 1px 0 rgba(255,255,255,.15),0 12px 28px rgba(0,8,22,.21),0 0 1px rgba(115,225,220,.18);
 backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
 color:#eefbfb!important;border-radius:14px!important;text-decoration:none;
 transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.site-header .site-cta:hover,.btn:hover,.shelf3d-list-button:hover,.arrow-button:hover,.audio-controls-row button:hover,.audio-book-tab:hover,.reader-toolbar button:hover,.article-actions a:hover{
 border-color:rgba(151,255,245,.7)!important;transform:translateY(-2px);box-shadow:inset 0 1px 0 #ffffff52,0 16px 35px rgba(0,0,0,.29),0 0 20px #60d2c026;
}
.btn-primary,.shelf3d-read,.reader-toolbar button.primary{background:linear-gradient(135deg,rgba(250,161,80,.97),rgba(204,104,33,.91))!important;border-color:rgba(255,204,142,.7)!important;color:#071829!important;box-shadow:inset 0 1px 0 rgba(255,238,199,.46),0 9px 30px rgba(223,114,45,.2)!important}
.hero-art::before{background:radial-gradient(ellipse at 50% 50%,rgba(65,201,190,.17) 0%,rgba(50,176,169,.07) 40%,transparent 70%);filter:blur(32px)}
.footer-social-icon{max-width:36px;max-height:36px}
.site-footer .footer-inner{gap:clamp(14px,2vw,32px)}
/* An equally prestigious ORIGINAL V9 3D carousel, front covers only */
.free-premium-shelf .shelf3d-shell{background:radial-gradient(ellipse at 48% 40%,#194750 0%,#0a2938 43%,#071829 85%)!important;border:1px solid rgba(125,215,213,.21);box-shadow:0 35px 85px #0005,inset 0 1px #a2fffb12!important}
.free-premium-shelf .shelf3d-halo{opacity:.73}.free-premium-shelf .shelf3d-flip{display:none!important}
.free-premium-shelf .shelf3d-nav{max-width:100%}.free-premium-shelf .shelf3d-dots{max-width:min(72vw,560px);overflow-x:auto;scrollbar-width:thin;scrollbar-color:#458c8e transparent;white-space:nowrap;display:flex;flex-wrap:nowrap;padding:8px 5px}
.free-premium-shelf .shelf3d-dot{flex:0 0 auto}
.free-premium-shelf .shelf3d-read{background:linear-gradient(140deg,rgba(114,210,201,.72),rgba(56,136,145,.8))!important;color:#081c2b!important;border:1px solid #9de8df!important}
.free-premium-shelf .shelf3d-book{transition:transform .6s cubic-bezier(.2,.7,.16,1),opacity .4s ease}
.free-premium-shelf .shelf3d-rear{display:none}.free-premium-shelf .shelf3d-book-number{color:#82d7ce}
.free-premium-shelf .shelf3d-stage{height:490px}
.free-catalogue-note{font-size:12px;color:#aacbd2;margin:20px 0 9px}
.free-catalogue[hidden]{display:none!important}
.free-catalogue.search-open{display:grid;grid-template-columns:repeat(auto-fill,minmax(205px,1fr));overflow:visible;scroll-snap-type:none;gap:25px}
.free-catalogue.search-open .article-card{flex:initial;min-width:0}
/* Original publication pages: no PDF file, no downloads; diagrams visible. */
.original-pages{padding:24px 0 45px;display:grid;gap:28px;max-width:1020px;margin:auto}
.original-pages[hidden],.accessible-text[hidden],.page-zoom-overlay[hidden]{display:none!important}
.original-pages-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;color:#dce9eb;font-size:13px;margin:4px 0 8px;border-bottom:1px solid #4f889033;padding-bottom:15px}
.original-pages-heading span{font-size:11px;color:#8abac6}
.original-page{margin:0;scroll-margin-top:210px;padding:0 0 10px;background:transparent;position:relative}
.original-page img{display:block;width:100%;height:auto;background:white;border-radius:6px;box-shadow:0 18px 42px #0005;border:1px solid rgba(232,245,244,.35);cursor:zoom-in;transition:filter .2s}
.original-page img:hover{filter:brightness(1.025)}.original-page figcaption{text-align:right;font-size:10px;color:#779eae;margin:7px 3px}
.accessible-text{scroll-margin-top:180px}
.page-zoom-overlay{position:fixed;z-index:1000;inset:0;background:rgba(0,10,20,.94);display:flex;align-items:start;justify-content:center;overflow:auto;padding:62px 20px 30px;backdrop-filter:blur(15px)}
.page-zoom-overlay img{max-width:min(100%,1250px);height:auto;box-shadow:0 24px 95px #0008;background:white;object-fit:contain}
.page-zoom-overlay button{position:fixed;right:19px;top:12px;width:42px;height:42px;border-radius:50%;border:1px solid #80c9c5;background:#0a3040;color:white;font-size:25px;z-index:1001}
.reader-toolbar button[aria-pressed=true]{border-color:rgba(234,163,90,.75)!important;box-shadow:inset 0 1px 0 #fff7,0 0 0 1px #e99b6380}
.reader-toolbar{background:rgba(12,42,54,.9);backdrop-filter:blur(18px);border-radius:15px;top:91px}
@media(max-width:760px){.original-pages-heading{flex-direction:column;align-items:start;gap:6px}.original-pages{gap:15px}.original-page{margin-left:-7px;margin-right:-7px}.free-premium-shelf .shelf3d-stage{height:390px}.free-premium-shelf .shelf3d-dots{max-width:65vw}.reader-toolbar{top:72px}}

/* Fidelity to eichdyn.co.uk global navigation and footer information architecture, actual original artwork. */
.site-header .brandtype strong{font-size:17px;letter-spacing:.13em;font-weight:800}
.site-header .brandtype small{font-size:9px;letter-spacing:.13em;font-weight:650;color:#a1c7cc}
.site-header .brandmark img{height:51px;width:51px;object-fit:contain}
.site-header .header-inner{min-height:83px}
.site-footer{background:#0a1c2d;border-top:1px solid rgba(102,202,195,.24);color:#f0f8f9}
.footer-premium-head{display:grid;grid-template-columns:auto minmax(320px,1fr) auto;gap:25px;align-items:center;max-width:1490px;padding:52px 36px 39px;margin:auto;border-bottom:1px solid rgba(115,211,211,.21)}
.footer-premium-head .brand-logos-footer{display:flex;gap:16px;align-items:center;margin:0}
.footer-premium-head .brand-logos-footer img{width:60px;height:60px;object-fit:contain}
.footer-premium-copy strong{display:block;font-size:23px;letter-spacing:.14em;color:#fff;line-height:1.1}
.footer-premium-copy span{display:block;font-size:12px;color:#89d1cb;letter-spacing:.07em;margin:8px 0 0}
.footer-premium-copy p{max-width:730px;margin:11px 0 0;font-size:13px;line-height:1.68;color:#a9bfcc}
.footer-premium-right{display:flex;flex-direction:column;align-items:end;gap:19px}
.footer-cta{color:#fff;font-weight:700;font-size:12px;padding:14px 21px;text-decoration:none;border-radius:12px;background:linear-gradient(125deg,rgba(219,119,46,.44),rgba(72,42,29,.66));border:1px solid rgba(245,166,91,.6);box-shadow:inset 0 1px #fff3,0 12px 25px #0004;backdrop-filter:blur(12px)}
.footer-premium-socials{display:flex;align-items:center;gap:13px;justify-content:end}
.footer-premium-socials a{display:grid;place-items:center;width:42px;height:42px;border-radius:10px;border:1px solid #7ec5c034;background:rgba(35,82,91,.21);transition:transform .2s ease,border-color .2s ease}
.footer-premium-socials a:hover{transform:translateY(-2px);border-color:#7eddd1}
.footer-premium-socials .footer-social-icon{width:31px;height:31px;max-width:31px;max-height:31px;object-fit:contain}
.footer-links-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:24px;max-width:1490px;padding:43px 36px 56px;margin:auto}
.footer-links-grid .footer-column{display:flex;flex-direction:column;gap:11px;min-width:0}
.footer-links-grid .footer-column h3{font-size:12px;color:#e3f7f5;margin:0 0 7px;letter-spacing:.012em;line-height:1.5}
.footer-links-grid .footer-column a{color:#9eb7c3;font-size:11px;line-height:1.5;overflow-wrap:break-word;text-decoration:none}
.footer-links-grid .footer-column a:hover{color:#87e4d9;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{max-width:1490px;margin:auto;border-top:1px solid #42707f3d}
@media(max-width:1260px){.footer-links-grid{grid-template-columns:repeat(4,minmax(0,1fr));row-gap:35px}}
@media(max-width:760px){.footer-premium-head{grid-template-columns:1fr;padding:36px 24px 30px;gap:18px}.footer-premium-right{align-items:start}.footer-premium-socials{justify-content:start;flex-wrap:wrap}.footer-links-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:31px 21px;padding:35px 24px 40px}.footer-premium-head .brand-logos-footer img{width:50px;height:50px}}
@media(max-width:420px){.footer-links-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}