:root{--bg:#120e1a;--surface:#1c1628;--surface2:#171221;--line:rgba(196,181,220,.15);--text:#efeaf6;--muted:#a79bc0;--accent:#f4b942;--accent-ink:#241a05;--radius:14px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1080px;margin:0 auto;padding:0 24px}
header.site{position:sticky;top:0;z-index:20;background:rgba(18,14,26,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:22px;padding:16px 0;flex-wrap:wrap}
.brand{display:flex;flex-direction:column;line-height:1.25}
.brand strong{font-size:1.02rem;letter-spacing:.2px}
.brand span{font-size:.78rem;color:var(--muted)}
.nav .links{display:flex;gap:18px;margin-left:auto;align-items:center;flex-wrap:wrap}
.nav .links a{color:var(--muted);font-size:.95rem}
.nav .links a:hover{color:var(--text)}
.nav .links .lang{border:1px solid var(--line);padding:5px 12px;border-radius:999px;color:var(--text)}
.hero{padding:84px 0 60px;background:radial-gradient(1100px 420px at 85% -10%,rgba(244,185,66,.15),transparent),radial-gradient(800px 380px at 0% 110%,rgba(167,139,250,.10),transparent)}
.badge{display:inline-block;font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);border:1px solid rgba(244,185,66,.35);border-radius:999px;padding:6px 14px;margin-bottom:20px}
.hero h1{font-size:clamp(2rem,4.4vw,3.1rem);line-height:1.15;letter-spacing:-.02em;max-width:18ch}
.hero .lead{margin:20px 0 30px;font-size:1.13rem;color:var(--muted);max-width:60ch}
.btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 22px;border-radius:10px;font-weight:600;font-size:.97rem}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{background:#ffd166;text-decoration:none}
.btn-ghost{border:1px solid var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);text-decoration:none}
section{padding:56px 0}
section.alt{background:var(--surface2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2{font-size:1.7rem;letter-spacing:-.01em;margin-bottom:10px}
.sub{color:var(--muted);max-width:70ch;margin-bottom:30px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:12px;position:relative;overflow:hidden}
.card:hover{transform:translateY(-3px);border-color:rgba(196,181,220,.32);transition:.18s}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--pc,var(--accent))}
.pillar{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:var(--pc,var(--accent));color:#fff;font-weight:700;font-size:1.05rem}
.card h3{font-size:1.16rem;line-height:1.3}
.card .vol{font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.card p{color:var(--muted);font-size:.95rem;flex:1}
.card .row{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.card .row a{font-weight:600;font-size:.93rem}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px;margin-top:26px}
.facts h3{font-size:1.05rem;margin-bottom:8px;color:var(--accent)}
.facts p{color:var(--muted);font-size:.95rem}
.about{display:grid;grid-template-columns:1fr 1fr;gap:36px}
@media(max-width:820px){.about{grid-template-columns:1fr}}
.about h3{font-size:1.1rem;margin-bottom:10px;color:var(--accent)}
.about p{color:var(--muted);font-size:.98rem;margin-bottom:12px}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
@media(max-width:820px){.contact{grid-template-columns:1fr}}
.contact h3{font-size:1.1rem;margin-bottom:14px;color:var(--accent)}
.clist{list-style:none}
.clist li{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:var(--muted);font-size:.98rem}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.panel .note{font-size:.82rem;color:var(--muted)}
.breadcrumb{padding:26px 0 0;font-size:.88rem;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.bookhero{padding:44px 0 30px}
.bookhero .vol{font-size:.8rem;letter-spacing:.09em;text-transform:uppercase;color:var(--accent);margin-bottom:12px;display:block}
.bookhero h1{font-size:clamp(1.7rem,3.6vw,2.5rem);line-height:1.18;letter-spacing:-.015em;max-width:24ch}
.bookhero .subtitle{margin-top:12px;color:var(--muted);font-size:1.12rem;max-width:64ch}
.bookbody{display:grid;grid-template-columns:1.6fr .9fr;gap:40px;padding-top:10px}
@media(max-width:840px){.bookbody{grid-template-columns:1fr}}
.bookbody p{color:var(--muted);margin-bottom:14px}
.aside{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;align-self:start}
.aside h3{font-size:1.02rem;margin-bottom:14px}
.learn{list-style:none;margin:0}
.learn li{padding:9px 0 9px 26px;position:relative;color:var(--muted);font-size:.94rem;border-bottom:1px dashed var(--line)}
.learn li:last-child{border-bottom:none}
.learn li::before{content:"";position:absolute;left:0;top:16px;width:9px;height:9px;border-radius:50%;background:var(--pc,var(--accent))}
.ctabox{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.ctabox .btn{text-align:center}
.ctabox .note{font-size:.82rem;color:var(--muted);text-align:center}
footer.site{border-top:1px solid var(--line);background:var(--surface2);padding:48px 0 28px;margin-top:40px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
@media(max-width:760px){.fgrid{grid-template-columns:1fr}}
footer.site h4{font-size:.82rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
footer.site ul{list-style:none}
footer.site li{margin-bottom:9px;font-size:.94rem}
footer.site .blurb{color:var(--muted);font-size:.94rem;max-width:38ch}
footer.site .legal{border-top:1px solid var(--line);margin-top:34px;padding-top:20px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:.85rem}