:root{
  --bg1:#93ecd8; --bg2:#79cfff; --bg3:#b290ff; --panel:rgba(250,254,255,.82);
  --nav:#166e8a; --nav2:#0f5469; --footer:#0f4e62; --text:#16384b; --line:rgba(255,255,255,.38);
  --shadow:0 18px 44px rgba(15,84,105,.18);
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",Arial,sans-serif;color:var(--text);background:radial-gradient(circle at top left, rgba(255,255,255,.22), transparent 28%),radial-gradient(circle at bottom right, rgba(255,255,255,.18), transparent 30%),linear-gradient(135deg,var(--bg1),var(--bg2) 55%,var(--bg3))}
a{color:#0c5b73} a:hover{color:#083d4c} img{max-width:100%;display:block}
.site-header{position:sticky;top:0;z-index:20;background:linear-gradient(90deg,var(--nav),var(--nav2));box-shadow:0 10px 24px rgba(0,0,0,.12)}
.header-inner,.page,.footer-inner{width:min(1180px,calc(100% - 32px));margin:0 auto}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 0}
.brand-box{display:flex;align-items:center;gap:16px}
.logo{width:76px;height:76px;object-fit:contain;background:rgba(255,255,255,.94);border-radius:22px;padding:8px;box-shadow:0 10px 24px rgba(0,0,0,.14)}
.brand-text h1{margin:0;color:#fff;font-size:2.0rem}.brand-text p{margin:6px 0 0;color:rgba(255,255,255,.88);font-size:1.5rem}
.main-nav{display:flex;justify-content:flex-end;align-items:center;gap:8px;flex-wrap:wrap}
.nav-link{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;min-height:46px;border-radius:999px;text-decoration:none;font-weight:700;color:#fff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);transition:.2s}
.nav-link:hover,.nav-link.active,.nav-dropdown.open .nav-button{background:rgba(255,255,255,.92);color:var(--nav2)}
.nav-button{font:inherit;cursor:pointer;border:none}
.nav-dropdown{position:relative}
.dropdown-panel{display:none;position:absolute;right:0;top:calc(100% + 10px);min-width:355px;background:rgba(255,255,255,.97);padding:12px;border-radius:24px;box-shadow:var(--shadow)}
.nav-dropdown.open .dropdown-panel{display:block}
.dropdown-panel a{display:block;padding:12px 14px;border-radius:16px;text-decoration:none;font-weight:600;color:var(--text)}
.dropdown-panel a:hover,.dropdown-panel a.active{background:linear-gradient(90deg,rgba(147,236,216,.55),rgba(121,207,255,.45))}
.page{padding:34px 0 40px}
.hero,.intro-card,.author-section,.contact-card,.topic-section{box-shadow:var(--shadow)}
.hero{display:grid;grid-template-columns:1.18fr .82fr;gap:24px;background:linear-gradient(135deg,rgba(255,255,255,.24),rgba(255,255,255,.14));border:1px solid var(--line);border-radius:34px;padding:34px}
.hero-text,.hero-badge-card,.author-frame,.author-info,.contact-card,.topic-text,.topic-gallery{background:var(--panel);border:1px solid rgba(255,255,255,.36);border-radius:28px}
.hero-text,.hero-badge-card,.author-info,.contact-card,.topic-text{padding:28px}
.eyebrow{display:inline-block;margin-bottom:12px;padding:8px 14px;border-radius:999px;background:linear-gradient(90deg,rgba(147,236,216,.95),rgba(121,207,255,.95));font-weight:700;color:#0d4e63}
.hero-text h2,.author-info h2,.contact-card h2,.topic-text h2{margin:0 0 14px;font-size:2.25rem;color:#0c3f54}
.hero-text p,.hero-badge-card p,.author-info p,.contact-card p,.topic-text p,.topic-text li,.intro-card p{line-height:1.8;font-size:1.05rem}
.hero-badge-card{display:flex;justify-content:center;flex-direction:column;background:linear-gradient(145deg,rgba(255,255,255,.88),rgba(223,248,255,.86))}
.hero-badge-card h3,.intro-card h3,.topic-text h3{margin:0 0 12px;color:#0f5368;font-size:1.25rem}
.intro-strip{margin-top:26px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.intro-card{padding:24px;background:var(--panel);border:1px solid rgba(255,255,255,.36);border-radius:28px}
.author-section{display:grid;grid-template-columns:.86fr 1.14fr;gap:28px;align-items:center;background:linear-gradient(135deg,rgba(255,255,255,.24),rgba(255,255,255,.14));border:1px solid var(--line);border-radius:34px;padding:32px}
.author-frame{padding:18px;background:linear-gradient(135deg,rgba(255,255,255,.95),rgba(208,245,255,.93))}
.author-photo{width:100%;min-height:500px;object-fit:cover;border-radius:24px;border:6px solid rgba(255,255,255,.9);box-shadow:0 16px 34px rgba(15,84,105,.18)}
.author-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}
.info-box{padding:18px;border-radius:22px;background:linear-gradient(135deg,rgba(147,236,216,.34),rgba(121,207,255,.28));display:flex;flex-direction:column;gap:8px;color:var(--text)}
.info-box strong{color:#0b5067}
.contact-section{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.contact-card{background:rgba(250,254,255,.84)}
.contact-list{margin:8px 0 0;padding-left:20px;line-height:1.9}
form{display:grid;gap:12px}label{font-weight:700;color:#0d4e63}
input,textarea{width:100%;padding:14px 16px;border-radius:18px;border:1px solid rgba(15,84,105,.18);background:#fff;font:inherit;color:var(--text)}
textarea{min-height:150px;resize:vertical}
button{border:none;border-radius:999px;padding:14px 18px;background:linear-gradient(90deg,#177f9c,#0f5469);color:#fff;font:inherit;font-weight:700;cursor:pointer}
.note{min-height:24px;color:#0d4e63;font-weight:700}
.topic-section{display:grid;grid-template-columns:1.02fr .98fr;gap:24px;background:linear-gradient(135deg,rgba(255,255,255,.24),rgba(255,255,255,.14));border:1px solid var(--line);border-radius:34px;padding:28px}
.topic-text ul{margin:10px 0 0 20px;padding:0}
.important-box,.sources-box{margin-top:18px;padding:18px 20px;border-radius:24px}
.important-box{background:linear-gradient(135deg,rgba(147,236,216,.36),rgba(121,207,255,.30))}
.sources-box{background:rgba(255,255,255,.72)}
.sources-box a{display:inline-block;margin-right:12px;margin-top:10px;padding:10px 14px;border-radius:999px;text-decoration:none;font-weight:700;background:linear-gradient(90deg,rgba(147,236,216,.65),rgba(121,207,255,.65))}
.topic-gallery{padding:20px;display:grid;gap:18px}
.image-card{overflow:hidden;border-radius:28px;background:linear-gradient(145deg,rgba(255,255,255,.92),rgba(228,248,255,.90));border:1px solid rgba(255,255,255,.36)}
.image-card img{width:100%;height:480px;object-fit:cover}
.footer{background:linear-gradient(90deg,var(--footer),#12667f);color:#fff;border-top:1px solid rgba(255,255,255,.18)}
.footer-inner{padding:18px 0;text-align:center;font-weight:700}
@media (max-width:980px){.header-inner,.hero,.author-section,.contact-section,.topic-section,.intro-strip{grid-template-columns:1fr}.header-inner{flex-direction:column;align-items:flex-start}.main-nav{width:100%}.dropdown-panel{left:0;right:auto;min-width:min(100vw - 48px,355px)}}
@media (max-width:640px){.header-inner,.page,.footer-inner{width:min(100% - 22px,1180px)}.brand-text h1{font-size:1.45rem}.hero-text h2,.author-info h2,.contact-card h2,.topic-text h2{font-size:1.72rem}.author-grid{grid-template-columns:1fr}.main-nav{justify-content:flex-start}.author-photo{min-height:340px}.image-card img{height:240px}}


.hero-with-image{grid-template-columns:1.08fr .92fr}
.hero-image-panel{background:var(--panel);border:1px solid rgba(255,255,255,.36);border-radius:28px;padding:20px;display:flex;align-items:center;justify-content:center}
.hero-main-image{width:100%;height:360px;object-fit:contain;border-radius:24px;background:linear-gradient(145deg,rgba(255,255,255,.96),rgba(228,248,255,.92));box-shadow:0 14px 30px rgba(15,84,105,.12);padding:14px}