:root{
  --bg:#f7fafc; --fg:#10182a; --muted:#586377; --border:#e3e8ef;
  --card:#ffffff; --primary:#1e3a5f; --primary-fg:#ffffff;
  --accent:#e07a3a; --accent-fg:#1a1a1a;
  --ocean:#2c5f8d; --ocean-deep:#0e2240; --foam:#eef4f9;
  --shadow-soft:0 1px 2px rgba(14,34,64,.05), 0 4px 16px rgba(14,34,64,.06);
  --shadow-card:0 2px 4px rgba(14,34,64,.05), 0 14px 36px rgba(14,34,64,.10);
  --gradient-hero:linear-gradient(135deg,#0e2240 0%, #1e3a5f 60%, #2c5f8d 100%);
  --gradient-sea:linear-gradient(180deg,#eef4f9 0%, #dde9f2 100%);
  --font-display:"Space Grotesk", system-ui, sans-serif;
  --font-sans:"Inter", system-ui, sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font-sans);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font-display);letter-spacing:-0.02em;line-height:1.15;margin:0 0 .5em}
.container{max-width:1200px;margin:0 auto;padding:0 1rem}
@media(min-width:640px){.container{padding:0 1.5rem}}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.site-header .row{display:flex;align-items:center;justify-content:space-between;height:64px;gap:1rem}
.brand{display:flex;align-items:center;gap:.6rem;font-family:var(--font-display);font-weight:700;color:var(--fg);font-size:1.05rem}
.brand .dot{width:10px;height:10px;border-radius:999px;background:var(--accent)}
.brand small{display:block;font-size:.7rem;font-weight:500;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
.nav-desktop{display:none;gap:1.1rem;align-items:center}
.nav-desktop a{color:var(--fg);font-size:.9rem;font-weight:500}
.nav-desktop a.btn{padding:.5rem .9rem;background:var(--primary);color:#fff;border-radius:8px}
.nav-desktop a.btn:hover{text-decoration:none;filter:brightness(1.1)}
.lang-switch{font-size:.8rem;color:var(--muted);border:1px solid var(--border);padding:.35rem .6rem;border-radius:999px}
@media(min-width:1024px){.nav-desktop{display:flex}.menu-btn{display:none}}
.menu-btn{appearance:none;background:#fff;border:1px solid var(--border);border-radius:10px;padding:.55rem .8rem;font-weight:600;cursor:pointer;font-size:.9rem;color:var(--fg)}
.mobile-nav{display:none;border-top:1px solid var(--border);background:#fff}
.mobile-nav.open{display:block}
.mobile-nav ul{list-style:none;margin:0;padding:.5rem 1rem 1rem}
.mobile-nav li a{display:block;padding:.85rem .25rem;border-bottom:1px solid var(--border);color:var(--fg);font-weight:500}

/* Hero */
.hero{position:relative;overflow:hidden;isolation:isolate;color:#fff;background:var(--gradient-hero)}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(circle at 20% 30%, rgba(255,255,255,.18), transparent 40%),radial-gradient(circle at 80% 70%, rgba(255,255,255,.18), transparent 40%);mix-blend-mode:overlay}
.hero-inner{padding:3rem 0 5rem;display:grid;gap:2.5rem;grid-template-columns:1fr}
@media(min-width:1024px){.hero-inner{grid-template-columns:1fr 1fr;gap:3rem;padding:6rem 0 8rem;align-items:center}}
.badge{display:inline-flex;align-items:center;gap:.5rem;padding:.4rem .8rem;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:999px;font-size:.8rem;font-weight:500;backdrop-filter:blur(8px)}
.badge .ping{width:6px;height:6px;border-radius:999px;background:var(--accent)}
.hero h1{font-size:clamp(2.25rem,6vw,4.5rem);font-weight:700;margin-top:1.2rem}
.hero h1 .accent{color:var(--accent)}
.hero p.lead{margin-top:1.2rem;font-size:1.05rem;color:rgba(255,255,255,.88);max-width:34rem}
.cta-row{margin-top:2rem;display:flex;flex-wrap:wrap;gap:.75rem}
.btn-primary{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.25rem;border-radius:10px;background:var(--accent);color:var(--accent-fg);font-weight:600;box-shadow:var(--shadow-card)}
.btn-primary:hover{text-decoration:none;filter:brightness(.95)}
.btn-ghost{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.25rem;border-radius:10px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);color:#fff;font-weight:600;backdrop-filter:blur(8px)}
.btn-ghost:hover{text-decoration:none;background:rgba(255,255,255,.16)}
.hero-img{position:relative}
.hero-img .frame{position:relative;border-radius:18px;overflow:hidden;border:1px solid rgba(255,255,255,.18);box-shadow:var(--shadow-card);aspect-ratio:16/10;background:var(--ocean-deep)}
.hero-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-img .cap{position:absolute;left:0;right:0;bottom:0;padding:1rem;background:linear-gradient(to top, rgba(0,0,0,.75), rgba(0,0,0,.0));color:#fff;font-size:.95rem;font-weight:500}
.wave{display:block;width:100%;height:60px;color:var(--bg)}

/* Sections */
.section{padding:3.5rem 0}
@media(min-width:640px){.section{padding:5rem 0}}
.eyebrow{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--accent)}
.section h2{font-size:clamp(1.75rem,3.5vw,2.5rem);font-weight:700;margin-top:.4rem}
.section .lead{color:var(--muted);max-width:42rem;margin-top:.6rem}
.grid-3{display:grid;gap:1rem;grid-template-columns:1fr;margin-top:2.5rem}
@media(min-width:640px){.grid-3{grid-template-columns:1fr 1fr;gap:1.25rem}}
@media(min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.card{display:block;background:var(--card);border:1px solid var(--border);border-radius:18px;padding:1.4rem;box-shadow:var(--shadow-soft);transition:all .25s ease;color:var(--fg);height:100%}
.card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow-card);border-color:rgba(44,95,141,.4)}
.card .num{font-family:var(--font-display);font-weight:600;color:var(--muted);font-size:.85rem}
.card h3{margin-top:1.5rem;font-size:1.1rem;font-weight:600}
.card .arrow{float:right;color:var(--muted);font-size:1.1rem}

.books{background:var(--gradient-sea)}
.book{display:block;background:var(--card);border:1px solid var(--border);border-radius:18px;overflow:hidden;box-shadow:var(--shadow-soft);transition:all .3s ease;color:var(--fg)}
.book:hover{text-decoration:none;transform:translateY(-4px);box-shadow:var(--shadow-card)}
.book .cover{aspect-ratio:3/4;background:var(--foam);overflow:hidden}
.book .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.book:hover .cover img{transform:scale(1.04)}
.book .body{padding:1.3rem}
.book .period{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--accent)}
.book h3{margin-top:.5rem;font-size:1.15rem;font-weight:600}
.book .more{margin-top:1rem;display:inline-flex;color:var(--primary);font-weight:500;font-size:.9rem}

.dual{display:grid;gap:1.25rem;grid-template-columns:1fr;margin-top:2.5rem}
@media(min-width:768px){.dual{grid-template-columns:1fr 1fr}}
.tile{padding:1.8rem;border-radius:18px;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-soft);display:flex;justify-content:space-between;gap:1rem;align-items:flex-start;color:var(--fg)}
.tile:hover{text-decoration:none;box-shadow:var(--shadow-card)}
.tile.dark{background:var(--gradient-hero);color:#fff;border-color:transparent;box-shadow:var(--shadow-card)}
.tile.dark p{color:rgba(255,255,255,.85)}
.tile h3{font-size:1.4rem;margin-top:.5rem;font-weight:600}

/* Page (inner) */
.page-hero{background:var(--gradient-hero);color:#fff;padding:3rem 0 2.5rem}
.page-hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:700}
.page-hero .crumb{color:rgba(255,255,255,.7);font-size:.85rem;margin-bottom:.6rem}
.page-hero .crumb a{color:rgba(255,255,255,.85)}
.page-content{padding:3rem 0}
.prose{max-width:780px;margin:0 auto;font-size:1.05rem;color:#1f2937}
.prose p{margin:0 0 1.2rem}
.prose img{margin:2rem auto;border-radius:14px;box-shadow:var(--shadow-card)}
.figure{margin:2rem 0}
.figure img{border-radius:14px;box-shadow:var(--shadow-card);margin:0 auto}
.gallery{display:grid;gap:1rem;grid-template-columns:1fr;margin:2.5rem auto;max-width:1100px}
@media(min-width:640px){.gallery{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.gallery{grid-template-columns:repeat(3,1fr)}}
.gallery a{display:block;border-radius:14px;overflow:hidden;box-shadow:var(--shadow-soft);background:var(--foam)}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease}
.gallery a:hover img{transform:scale(1.04)}

/* Footer */
.site-footer{margin-top:auto;background:var(--ocean-deep);color:rgba(255,255,255,.85);padding:3rem 0 1.5rem}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:.8rem}
.site-footer a{color:rgba(255,255,255,.78)}
.site-footer a:hover{color:#fff}
.site-footer .cols{display:grid;gap:2rem;grid-template-columns:1fr}
@media(min-width:768px){.site-footer .cols{grid-template-columns:1.4fr 1fr 1fr}}
.site-footer ul{list-style:none;padding:0;margin:0;font-size:.92rem;line-height:1.9}
.copyright{margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid rgba(255,255,255,.12);font-size:.85rem;color:rgba(255,255,255,.6);display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem}