:root{
  --ink:#0d1830;--muted:#5c667a;--paper:#f7f9fc;--white:#fff;
  --navy:#071a3d;--gold:#d6a72d;--line:#dce3ef;--shadow:0 24px 70px rgba(7,26,61,.12);
  --radius:24px;--max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);line-height:1.65}
body.dark{--ink:#edf3ff;--muted:#aab7cf;--paper:#07101f;--white:#0d1a30;--line:#20304b;--shadow:0 24px 70px rgba(0,0,0,.35)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
.container{width:min(var(--max),calc(100% - 40px));margin:auto}
.skip-link{position:absolute;left:-9999px;top:8px;background:#fff;padding:10px 14px;z-index:999}
.skip-link:focus{left:10px}
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--white) 88%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav{min-height:112px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:6px 0}
.brand{display:flex;align-items:center;gap:12px;font-weight:850;letter-spacing:-.02em}
.brand svg{width:42px;height:42px}
.brand span small{display:block;font-size:.69rem;text-transform:uppercase;letter-spacing:.15em;color:var(--muted);font-weight:700}
.nav-links{display:flex;gap:24px;align-items:center;font-size:.94rem;font-weight:700}
.nav-links a{position:relative}
.nav-links a:after{content:"";height:2px;background:var(--gold);position:absolute;left:0;right:100%;bottom:-8px;transition:.25s}
.nav-links a:hover:after,.nav-links a.active:after{right:0}
.icon-btn,.menu-btn{border:1px solid var(--line);background:var(--white);color:var(--ink);width:42px;height:42px;border-radius:50%;cursor:pointer;display:grid;place-items:center}
.menu-btn{display:none}

.header-right{display:flex;align-items:center;gap:12px}
.right-controls{display:flex;gap:8px}
.site-extra-logo{width:100px;height:100px;object-fit:contain;background:var(--white);border:1px solid var(--line);border-radius:20px;padding:6px;box-shadow:0 10px 24px rgba(7,26,61,.10)}
.hero{position:relative;overflow:hidden;padding:78px 0 84px;background:
 radial-gradient(circle at 82% 20%,rgba(214,167,45,.18),transparent 30%),
 linear-gradient(135deg,#061735 0%,#0d316b 56%,#155888 100%);color:#fff}
.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:38px 38px;mask-image:linear-gradient(to bottom,#000,transparent)}
.welcome-hero{padding:64px 0 96px;min-height:650px;background:
 radial-gradient(circle at 76% 34%,rgba(214,167,45,.25),transparent 20%),
 radial-gradient(circle at 8% 100%,rgba(35,143,180,.22),transparent 30%),
 linear-gradient(132deg,#04132f 0%,#092653 47%,#124c76 100%)}
.welcome-hero:after{content:"";position:absolute;width:540px;height:540px;border:1px solid rgba(255,255,255,.09);border-radius:50%;right:-210px;top:-180px;box-shadow:0 0 0 38px rgba(255,255,255,.025),0 0 0 76px rgba(255,255,255,.02)}
.hero-grid{position:relative;display:grid;grid-template-columns:1.07fr .93fr;gap:55px;align-items:center}
.hero-copy{position:relative;z-index:2;padding:20px 0 10px}
.welcome-label{display:flex;align-items:center;gap:11px;color:#f3c75a;text-transform:uppercase;letter-spacing:.19em;font-size:.69rem;font-weight:900;margin-bottom:20px}
.welcome-line{width:30px;height:1px;background:#f3c75a;opacity:.8}
.eyebrow{display:inline-flex;align-items:center;gap:9px;padding:8px 13px;border:1px solid rgba(255,255,255,.2);border-radius:999px;background:rgba(255,255,255,.08);font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.12em}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--gold)}
.hero h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(3rem,6.2vw,6.4rem);line-height:.93;margin:24px 0 22px;letter-spacing:-.055em;max-width:870px}
.hero h1 em{font-style:normal;color:#f3c75a}
.hero p{font-size:1.12rem;color:#dce9ff;max-width:720px}
.hero-intro{font-size:1.16rem!important;line-height:1.7;max-width:650px!important}
.hero-signature{display:flex;gap:12px;align-items:center;flex-wrap:wrap;color:#b9d2ee;font-size:.8rem;font-weight:800;letter-spacing:.04em;margin-top:22px}
.hero-signature b{color:#f3c75a;font-size:1rem}
.actions{display:flex;gap:13px;flex-wrap:wrap;margin-top:30px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 19px;border-radius:999px;border:1px solid transparent;font-weight:800;transition:.2s;cursor:pointer}
.btn-primary{background:var(--gold);color:#18213a}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.04)}
.btn-ghost{border-color:rgba(255,255,255,.3);color:#fff;background:rgba(255,255,255,.07)}
.btn-light{background:var(--white);border-color:var(--line)}
.hero-discover{display:inline-flex;align-items:center;gap:10px;margin-top:35px;color:#c4dbf1;font-size:.8rem;font-weight:800;letter-spacing:.05em;transition:.2s}
.hero-discover:hover{color:#fff;transform:translateX(4px)}
.discover-icon{width:29px;height:29px;border:1px solid rgba(255,255,255,.35);border-radius:50%;display:grid;place-items:center;color:#f3c75a;font-size:1rem}
.hero-books{position:relative;min-height:560px;isolation:isolate}
.hero-books:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;left:50%;top:50%;transform:translate(-50%,-50%);background:radial-gradient(circle,rgba(255,255,255,.14),rgba(255,255,255,0) 67%);filter:blur(4px);z-index:-2}
.hero-orbit{position:absolute;border:1px solid rgba(255,255,255,.16);border-radius:50%;left:50%;top:50%;transform:translate(-50%,-50%) rotate(-14deg);z-index:-1}
.orbit-one{width:480px;height:290px}
.orbit-two{width:360px;height:520px;transform:translate(-50%,-50%) rotate(56deg);border-color:rgba(214,167,45,.3)}
.hero-stage-label{position:absolute;right:9px;top:8px;display:grid;gap:2px;text-align:right;color:#fff;z-index:3}
.hero-stage-label strong{font-size:.64rem;letter-spacing:.18em;color:#f3c75a}
.hero-stage-label span{font-size:.66rem;color:#b5cce5}
.hero-stage-note{position:absolute;left:50%;bottom:0;transform:translateX(-50%);white-space:nowrap;background:rgba(3,16,39,.7);border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:9px 14px;color:#c9ddf1;font-size:.7rem;font-weight:750;backdrop-filter:blur(12px);z-index:3}
.stage-dot{display:inline-block;width:7px;height:7px;background:#5ed48a;border-radius:50%;margin-right:7px;box-shadow:0 0 0 4px rgba(94,212,138,.14)}
.book-stack{position:absolute;inset:0;display:grid;place-items:center}
.book-stack img{position:absolute;width:250px;border-radius:7px;box-shadow:0 25px 50px rgba(0,0,0,.34);transition:.35s;transform-origin:bottom}
.book-stack img:nth-child(1){transform:translate(-155px,22px) rotate(-10deg)}
.book-stack img:nth-child(2){transform:translate(-105px,-2px) rotate(-6deg)}
.book-stack img:nth-child(3){transform:translate(-50px,-18px) rotate(-3deg)}
.book-stack img:nth-child(4){transform:translate(10px,-32px)}
.book-stack img:nth-child(5){transform:translate(70px,-18px) rotate(3deg)}
.book-stack img:nth-child(6){transform:translate(125px,0) rotate(6deg)}
.book-stack img:nth-child(7){transform:translate(175px,24px) rotate(10deg)}
.book-stack:hover img:nth-child(1){transform:translate(-190px,30px) rotate(-13deg)}
.book-stack:hover img:nth-child(7){transform:translate(210px,30px) rotate(13deg)}
.welcome-overview{position:relative}
.welcome-overview:before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent);opacity:.45}
.section{padding:84px 0}
.section-sm{padding:55px 0}
.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:35px}
.kicker{font-size:.78rem;font-weight:850;text-transform:uppercase;letter-spacing:.16em;color:#a77700}
h2{font-family:Georgia,"Times New Roman",serif;font-size:clamp(2.25rem,4.6vw,4rem);line-height:1.08;letter-spacing:-.035em;margin:8px 0 0}
.lead{font-size:1.08rem;color:var(--muted);max-width:760px}
.stats{margin-top:-34px;position:relative;z-index:4}
.stats-grid{background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:22px;display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden}
.stat{padding:27px;text-align:center;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat strong{font-family:Georgia,serif;font-size:2rem;display:block}
.stat span{font-size:.85rem;color:var(--muted);font-weight:700}
.vol-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.volume-card{--accent:#123;position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 15px 45px rgba(7,26,61,.07);transition:.28s}
.volume-card:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.cover-wrap{aspect-ratio:2/2.9;background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 14%,white),#fff);padding:16px;display:grid;place-items:center;overflow:hidden}
.cover-wrap img{height:100%;width:auto;border-radius:3px;box-shadow:0 15px 30px rgba(0,0,0,.18)}
.card-body{padding:22px}
.volume-no{font-size:.72rem;font-weight:900;color:var(--accent);text-transform:uppercase;letter-spacing:.14em}
.volume-card h3{font-family:Georgia,serif;font-size:1.4rem;line-height:1.18;margin:8px 0}
.volume-card p{color:var(--muted);font-size:.93rem;margin:0 0 17px}
.text-link{color:var(--accent);font-weight:850;display:inline-flex;gap:7px;align-items:center}
.text-link:hover{gap:11px}
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}
.panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:0 18px 50px rgba(7,26,61,.06)}
.overview-img{border-radius:20px;box-shadow:var(--shadow);max-height:650px;margin:auto}
.check-list{display:grid;gap:15px;margin:25px 0 0;padding:0;list-style:none}
.check-list li{display:grid;grid-template-columns:28px 1fr;gap:12px}
.check-list li:before{content:"✓";width:26px;height:26px;border-radius:50%;background:#e9f6ef;color:#13703b;display:grid;place-items:center;font-weight:900}
.author-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.author-card{background:var(--white);border:1px solid var(--line);border-radius:22px;padding:18px;min-height:100%;transition:.25s;position:relative;overflow:hidden}
.author-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.author-card-head{display:flex;justify-content:flex-end;align-items:flex-start;min-height:118px;margin:-2px -2px 17px;position:relative}
.author-thumb{width:92px;height:112px;object-fit:cover;object-position:center top;border-radius:18px;border:4px solid var(--white);box-shadow:0 12px 28px rgba(7,26,61,.18)}
.author-code,.photo-code{position:absolute;background:var(--gold);color:#19223a;font-size:.68rem;font-weight:950;letter-spacing:.08em;border-radius:999px;padding:5px 8px;line-height:1;box-shadow:0 5px 12px rgba(7,26,61,.16)}
.author-code{right:5px;bottom:0}
.avatar{width:64px;height:64px;border-radius:20px;background:linear-gradient(135deg,#0c376e,#d5a52c);display:grid;place-items:center;color:#fff;font-weight:900;letter-spacing:.03em;margin-bottom:18px}
.author-card h3{font-family:Georgia,serif;font-size:1.2rem;line-height:1.25;margin:0}
.author-card .role{font-size:.82rem;color:var(--muted);font-weight:750;margin:5px 0 15px}
.badge{display:inline-flex;padding:5px 9px;border-radius:999px;background:#eef3fb;color:#526077;font-size:.68rem;font-weight:850;text-transform:uppercase;letter-spacing:.06em}
body.dark .badge{background:#192941}
.quote{background:linear-gradient(135deg,#071a3d,#0e477d);color:#fff;border-radius:32px;padding:55px;position:relative;overflow:hidden}
.quote:after{content:"AI";position:absolute;right:35px;bottom:-35px;font-family:Georgia,serif;font-size:12rem;color:rgba(255,255,255,.05);font-weight:900}
.quote blockquote{font-family:Georgia,serif;font-size:clamp(2rem,4vw,3.7rem);line-height:1.12;margin:0;max-width:920px}
.cta{background:linear-gradient(135deg,#f5e7b2,#f8f3e5);border:1px solid #e7d49c;border-radius:32px;padding:48px;display:flex;justify-content:space-between;gap:30px;align-items:center;color:#16213c}
.site-footer{background:#06142f;color:#c9d6ed;padding:52px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr .7fr .7fr;gap:40px}
.footer-title{color:#fff;font-weight:850;margin-bottom:13px}
.footer-links{display:grid;gap:8px;font-size:.92rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:20px;font-size:.82rem;color:#8fa0be;display:flex;justify-content:space-between;gap:20px}
.page-hero{padding:68px 0 55px;background:linear-gradient(135deg,#071a3d,#154b7b);color:#fff}
.page-hero h1{font-family:Georgia,serif;font-size:clamp(2.7rem,5vw,5rem);line-height:1;margin:12px 0}
.breadcrumbs{font-size:.82rem;color:#c5d6ef}
.detail-grid{display:grid;grid-template-columns:360px 1fr;gap:55px;align-items:start}
.detail-cover{position:sticky;top:105px;background:var(--white);padding:18px;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}
.detail-content h2{font-size:2.4rem}
.pill-row{display:flex;gap:9px;flex-wrap:wrap;margin:22px 0}
.pill{padding:8px 12px;border-radius:999px;background:color-mix(in srgb,var(--accent) 11%,var(--white));color:var(--accent);font-size:.82rem;font-weight:800;border:1px solid color-mix(in srgb,var(--accent) 25%,transparent)}
.theme-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0;list-style:none}
.theme-list li{background:var(--white);border:1px solid var(--line);border-radius:15px;padding:15px 17px;font-weight:700}
.theme-note{margin:-8px 0 16px;color:var(--muted);font-size:.9rem}
.theme-list li{padding:0;overflow:hidden}
.theme-item{width:100%;min-height:76px;border:0;background:transparent;color:var(--ink);padding:15px 17px;text-align:left;cursor:pointer;display:grid;gap:5px;transition:.2s}
.theme-item:hover,.theme-item:focus-visible{background:color-mix(in srgb,var(--gold) 13%,var(--white));outline:0}
.theme-item span{font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:#a77700;font-weight:900}
.theme-item strong{font-size:.95rem;line-height:1.35}
body.modal-open{overflow:hidden}
.chapter-modal{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:24px}
.chapter-modal[hidden]{display:none}
.chapter-modal-backdrop{position:absolute;inset:0;background:rgba(3,13,32,.74);backdrop-filter:blur(5px)}
.chapter-dialog{position:relative;width:min(820px,100%);max-height:min(780px,calc(100vh - 48px));overflow:auto;background:var(--white);color:var(--ink);border:1px solid var(--line);border-radius:26px;padding:34px 38px 38px;box-shadow:0 30px 100px rgba(0,0,0,.32)}
.chapter-dialog h2{font-size:clamp(1.8rem,4vw,2.8rem);padding-right:32px;margin:8px 0 10px}
.chapter-close{position:absolute;right:18px;top:16px;width:40px;height:40px;border:1px solid var(--line);border-radius:50%;background:var(--white);color:var(--ink);font-size:1.7rem;line-height:1;cursor:pointer}
.chapter-close:hover{background:#f5e7b2}
.chapter-meta{font-size:.8rem;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:17px;margin-bottom:20px}
.chapter-abstract-body p{font-size:1rem;line-height:1.75;margin:0 0 15px;text-align:justify}
.contribution{border-left:5px solid var(--accent);background:color-mix(in srgb,var(--accent) 7%,var(--white));padding:22px;border-radius:0 18px 18px 0}
.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px}
.prev-next a{background:var(--white);border:1px solid var(--line);border-radius:17px;padding:17px;font-weight:800}
.author-full{display:grid;grid-template-columns:1fr 230px;gap:38px;background:var(--white);border:1px solid var(--line);border-radius:25px;padding:34px 36px;margin-bottom:22px;align-items:center}
.author-photo-wrap{justify-self:end;position:relative;width:205px;padding:10px 0 0 10px}
.author-photo{width:195px;height:235px;object-fit:cover;object-position:center top;border-radius:24px;border:6px solid var(--white);box-shadow:0 20px 40px rgba(7,26,61,.18);background:#eef3f9}
.photo-code{right:-2px;top:0;font-size:.75rem;padding:7px 10px}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.tag{font-size:.78rem;font-weight:800;padding:7px 10px;background:#eff4fb;border-radius:999px;color:#46546b}
body.dark .tag{background:#172841;color:#cbd8eb}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.field{display:grid;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-weight:800;font-size:.86rem}
.field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;background:var(--white);color:var(--ink)}
.field textarea{min-height:150px;resize:vertical}
.notice{font-size:.82rem;color:var(--muted)}
.reveal{opacity:0;transform:translateY(18px);transition:.55s}
.reveal.visible{opacity:1;transform:none}
@media(max-width:1000px){
  .hero-grid,.feature-grid,.detail-grid{grid-template-columns:1fr}
  .hero-books{min-height:500px;margin-top:20px}
  .hero-copy{max-width:800px}
  .hero-stage-label{right:12%;top:0}
  .vol-grid{grid-template-columns:repeat(2,1fr)}
  .author-grid{grid-template-columns:repeat(2,1fr)}
  .detail-cover{position:relative;top:0;max-width:420px}
}
@media(max-width:760px){
  .container{width:min(100% - 24px,var(--max))}
  .nav-links{display:none;position:absolute;left:12px;right:12px;top:108px;background:var(--white);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
  .nav-links.open{display:flex}
  .menu-btn{display:grid}

  .header-right{gap:8px}
  .site-extra-logo{width:64px;height:64px;border-radius:14px;padding:4px}
  .hero{padding-top:54px}
  .welcome-hero{padding:42px 0 62px;min-height:0}
  .welcome-label{font-size:.61rem;letter-spacing:.13em}
  .eyebrow{font-size:.65rem;letter-spacing:.08em}
  .hero h1{font-size:clamp(2.8rem,12vw,4.5rem);line-height:.95}
  .hero-intro{font-size:1rem!important}
  .hero-signature{font-size:.72rem;gap:8px}
  .hero-books{min-height:375px;margin-top:15px}
  .hero-stage-label{right:8px;top:0}
  .hero-stage-label strong{font-size:.56rem}
  .hero-stage-label span{font-size:.55rem}
  .hero-stage-note{font-size:.61rem;bottom:-3px;padding:8px 11px}
  .orbit-one{width:340px;height:210px}
  .orbit-two{width:260px;height:390px}
  .book-stack img{width:155px}
  .book-stack img:nth-child(1){transform:translate(-105px,22px) rotate(-10deg)}
  .book-stack img:nth-child(2){transform:translate(-72px,-2px) rotate(-6deg)}
  .book-stack img:nth-child(3){transform:translate(-37px,-18px) rotate(-3deg)}
  .book-stack img:nth-child(4){transform:translate(0,-28px)}
  .book-stack img:nth-child(5){transform:translate(37px,-18px) rotate(3deg)}
  .book-stack img:nth-child(6){transform:translate(72px,0) rotate(6deg)}
  .book-stack img:nth-child(7){transform:translate(105px,22px) rotate(10deg)}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat:nth-child(2){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .vol-grid,.author-grid,.theme-list,.footer-grid,.form-grid,.prev-next{grid-template-columns:1fr}
  .field.full{grid-column:auto}
  .section{padding:62px 0}
  .section-head,.cta,.footer-bottom{align-items:flex-start;flex-direction:column}
  .author-full{grid-template-columns:1fr;padding:26px 22px}
  .author-photo-wrap{order:-1;justify-self:start;width:155px}
  .author-photo{width:145px;height:175px;border-radius:20px}
  .photo-code{right:-4px}
  .chapter-modal{padding:12px}
  .chapter-dialog{max-height:calc(100vh - 24px);padding:28px 21px 25px;border-radius:20px}
  .chapter-abstract-body p{text-align:left;font-size:.94rem}
  .quote{padding:34px 26px}
}