:root{
  --bg:#f3f7fb;
  --surface:#ffffff;
  --surface-alt:#eef4f8;
  --surface-soft:#f8fbfd;
  --text:#19324a;
  --muted:#5c6f83;
  --navy:#054a85;
  --blue:#2e78bd;
  --blue-deep:#033663;
  --gold:#dba358;
  --gold-soft:#f3e1c7;
  --success:#1f8d66;
  --border:#d6e2ee;
  --shadow:0 22px 60px rgba(5,74,133,.10);
  --shadow-soft:0 10px 30px rgba(5,74,133,.08);
  --radius:24px;
  --header-h:76px;
  --sidebar-w:300px;
  --font-base:Arial, Helvetica, sans-serif;
  --font-display:"Arial Narrow", Arial, Helvetica, sans-serif;
}
[data-theme="dark"]{
  --bg:#0f1a28;
  --surface:#152335;
  --surface-alt:#112131;
  --surface-soft:#1a2d42;
  --text:#edf5fb;
  --muted:#adc0d2;
  --navy:#7db9f1;
  --blue:#5fa3e4;
  --blue-deep:#0c4d88;
  --gold:#e5b26d;
  --gold-soft:#3b3122;
  --success:#43b98e;
  --border:#274158;
  --shadow:0 18px 50px rgba(0,0,0,.28);
  --shadow-soft:0 10px 30px rgba(0,0,0,.22);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:
  radial-gradient(circle at top left,rgba(219,163,88,.12),transparent 22%),
  linear-gradient(180deg,#f6fafe 0%,var(--bg) 30%,var(--bg) 100%);
  color:var(--text);font-family:var(--font-base);line-height:1.6}
a{color:inherit}
button,input{font:inherit}
.reading-progress{position:fixed;z-index:9999;top:0;left:0;height:4px;background:linear-gradient(90deg,var(--gold),var(--blue));width:0}
.site-header{position:fixed;z-index:1000;top:0;left:0;right:0;height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:22px;padding:0 22px;background:color-mix(in srgb,var(--surface) 90%,transparent);backdrop-filter:blur(16px);border-bottom:1px solid rgba(5,74,133,.12);box-shadow:var(--shadow-soft)}
.brand{display:flex;align-items:center;text-decoration:none}
.brand-logo{width:148px;height:auto;display:block}
.header-nav{display:flex;align-items:center;gap:10px;flex:1;min-width:0}
.header-home,.nav-group summary{display:inline-flex;align-items:center;height:42px;padding:0 14px;border-radius:14px;text-decoration:none;color:var(--navy);font-weight:800;white-space:nowrap}
.header-home:hover,.header-home.active,.nav-group summary:hover,.nav-group[open] summary{background:var(--surface-alt)}
.nav-group{position:relative}
.nav-group summary{list-style:none;cursor:pointer}
.nav-group summary::-webkit-details-marker{display:none}
.nav-group summary::after{content:"▾";font-size:.72rem;margin-left:8px;opacity:.7}
.nav-dropdown{position:absolute;top:100%;left:0;display:grid;gap:4px;min-width:260px;padding:18px 14px 14px;background:var(--surface);border:1px solid rgba(5,74,133,.10);border-radius:18px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translateY(6px);transition:opacity .18s ease,transform .18s ease}
.nav-dropdown a{display:block;padding:10px 12px;border-radius:12px;text-decoration:none;color:var(--muted);font-size:.94rem}
.nav-dropdown a:hover,.nav-dropdown a.active{background:var(--surface-alt);color:var(--navy)}
.nav-group[open] .nav-dropdown{opacity:1;pointer-events:auto;transform:translateY(0)}
.header-actions{display:flex;gap:8px}
.icon-button,.menu-button{border:1px solid var(--border);background:var(--surface);color:var(--text);width:42px;height:42px;border-radius:14px;cursor:pointer;box-shadow:var(--shadow-soft)}
.menu-button{display:none}
.mobile-nav-panel{display:none}
.content{margin-left:0;padding-top:var(--header-h)}
.hero{min-height:clamp(420px, 68vh, 620px);display:block;padding:84px clamp(28px,6vw,96px) 76px;background:
  radial-gradient(circle at 18% 12%,rgba(219,163,88,.24),transparent 20%),
  linear-gradient(135deg,#043058 0%,#054a85 48%,#0c5d9d 100%);
  color:#fff;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;inset:auto -8% -22% auto;width:360px;height:360px;background:rgba(255,255,255,.08);border-radius:50%;filter:blur(8px)}
.hero-copy{max-width:760px}
.hero h1{font-size:clamp(3rem, 6vw, 3.4rem);line-height:.95;margin:20px 0 18px;max-width:30ch;font-family:var(--font-display);font-stretch:condensed;text-transform:uppercase;letter-spacing:.02em}
.hero-lead{font-size:1.18rem;max-width:640px;color:rgba(255,255,255,.9)}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.button{border:0;border-radius:16px;padding:15px 22px;font-weight:900;cursor:pointer;text-decoration:none;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}
.button:hover{transform:translateY(-2px)}
.button.primary{background:var(--gold);color:var(--blue-deep);box-shadow:0 14px 28px rgba(219,163,88,.28)}
.button.secondary{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45)}
.button.tertiary{background:#fff;color:var(--navy)}
.button.support{background:var(--navy);color:#fff;box-shadow:var(--shadow-soft)}
.overview-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:0 clamp(28px,6vw,90px) 34px;background:transparent;margin-top:20px;position:relative;z-index:2}
.overview-grid a{background:var(--surface);padding:24px;border-radius:22px;text-decoration:none;box-shadow:var(--shadow);border:1px solid rgba(5,74,133,.08)}
.overview-grid span{display:grid;place-items:center;width:42px;height:42px;background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;border-radius:50%;font-weight:900}
.overview-grid strong,.overview-grid small{display:block}
.overview-grid strong{margin-top:14px;color:var(--navy);font-size:1.05rem}
.overview-grid small{color:var(--muted)}
.support-strip{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:0 clamp(28px,6vw,90px) 36px;padding:24px 28px;background:linear-gradient(135deg,var(--surface),var(--surface-soft));border:1px solid rgba(5,74,133,.10);border-radius:24px;box-shadow:var(--shadow-soft)}
.support-strip span{display:block;color:var(--navy);font-size:.8rem;font-weight:900;letter-spacing:.08em}
.support-strip strong{display:block;font-size:1.15rem;max-width:720px;line-height:1.4}
.part-intro{display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:center;padding:40px clamp(28px,6vw,90px);color:#fff}
.part-intro span{border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.08);border-radius:18px;padding:11px 15px;font-weight:900}
.part-intro h2{font-size:2.5rem;line-height:1.05;margin:0;font-family:var(--font-display);font-stretch:condensed;letter-spacing:.02em;text-transform:uppercase}
.part-intro p{margin:8px 0 0;color:rgba(255,255,255,.86)}
.part-one{background:linear-gradient(100deg,#043662,#0a5a98)}
.part-two{background:linear-gradient(100deg,#8b5e20,#dba358)}
.part-three{background:linear-gradient(100deg,#074877,#0f6aa8)}
.part-four{background:linear-gradient(100deg,#0d5d7b,#0a7f90)}
.section{padding:84px clamp(28px,6vw,90px)}
.section.alt{background:linear-gradient(180deg,transparent 0%,rgba(5,74,133,.03) 100%)}
.section-heading{text-align:center;margin-bottom:36px}
.section-heading span{display:inline-block;background:var(--gold-soft);color:var(--blue-deep);padding:8px 15px;border-radius:999px;font-weight:900}
.section-heading h2{font-size:clamp(2.2rem,4vw,3.6rem);line-height:1.06;margin:16px 0 0;color:var(--navy);font-family:var(--font-display);font-stretch:condensed;letter-spacing:.01em}
.lead{max-width:880px;margin:0 auto 36px;text-align:center;font-size:1.12rem;color:var(--muted)}
.site-footer{padding:52px clamp(28px,6vw,90px);background:linear-gradient(135deg,#033663,#054a85);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:18px}
.footer-brand img{width:170px;height:auto}
.footer-brand strong{display:block;font-size:1.15rem}
.footer-brand p{margin:6px 0 0;color:rgba(255,255,255,.82)}
.footer-actions{display:flex;gap:14px;flex-wrap:wrap}
.footer-link{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:14px;text-decoration:none;border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.08);color:#fff}
.floating-support{position:fixed;right:22px;bottom:22px;z-index:1200;display:grid;gap:2px;padding:14px 18px;background:linear-gradient(135deg,#0b7a67,#18a77d);color:#fff;text-decoration:none;border-radius:18px;box-shadow:0 18px 40px rgba(9,93,71,.32)}
.floating-support span{font-size:.76rem;font-weight:800;letter-spacing:.04em}
.floating-support strong{font-size:1rem}
.search-overlay{position:fixed;z-index:2000;inset:0;background:rgba(0,0,0,.6);padding:8vh 20px}.search-dialog{max-width:760px;margin:auto;background:var(--surface);border-radius:22px;box-shadow:var(--shadow);max-height:84vh;overflow:auto}.search-header{display:flex;gap:10px;padding:16px;border-bottom:1px solid var(--border)}.search-header input{flex:1;padding:13px;border:1px solid var(--border);border-radius:12px;background:var(--bg);color:var(--text)}.search-results{padding:12px}.search-results a{display:block;padding:13px;border-radius:12px;text-decoration:none}.search-results a:hover{background:var(--surface-alt)}.search-results strong,.search-results small{display:block}.search-results small{color:var(--muted)}
@media(max-width:1200px){.header-nav{gap:4px}.header-home,.nav-group summary{padding:0 10px;font-size:.92rem}.overview-grid{margin-top:24px}}
@media(max-width:1020px){.header-nav{display:none}.menu-button{display:block}.mobile-nav-panel{position:fixed;z-index:950;top:var(--header-h);left:0;right:0;background:color-mix(in srgb,var(--surface) 98%,transparent);backdrop-filter:blur(16px);border-bottom:1px solid rgba(5,74,133,.10);box-shadow:var(--shadow-soft);padding:0 22px 18px;display:block;max-height:0;overflow:hidden;opacity:0;pointer-events:none;transition:max-height .25s ease,opacity .2s ease,padding-top .25s ease}.mobile-nav-panel.open{max-height:calc(100vh - var(--header-h));opacity:1;pointer-events:auto;padding-top:18px;overflow:auto}.mobile-nav{display:grid;gap:10px}.mobile-home,.mobile-nav summary,.mobile-nav-links a{display:block;padding:12px 14px;border-radius:14px;text-decoration:none}.mobile-home,.mobile-nav summary{background:var(--surface);color:var(--navy);font-weight:900;border:1px solid rgba(5,74,133,.10)}.mobile-nav summary{cursor:pointer}.mobile-nav details{background:var(--surface-soft);border:1px solid rgba(5,74,133,.08);border-radius:18px;padding:6px}.mobile-nav-links{display:grid;gap:4px;padding:4px 0 0}.mobile-nav-links a{color:var(--muted);font-size:.94rem}.mobile-nav-links a.active,.mobile-nav-links a:hover,.mobile-home.active{background:var(--surface-alt);color:var(--navy)}.overview-grid{grid-template-columns:repeat(2,1fr)}.support-strip,.site-footer{padding-left:28px;padding-right:28px}.floating-support{right:16px;bottom:16px}}
@media(max-width:720px){.brand-logo{width:126px}.site-header{padding:0 16px}.hero{min-height:auto;padding:68px 28px 56px}.hero h1{max-width:none}.overview-grid{grid-template-columns:1fr;margin-top:16px}.support-strip{flex-direction:column;align-items:flex-start}.part-intro{grid-template-columns:1fr}.part-intro h2{font-size:2.2rem}.site-footer{display:block}.footer-brand{align-items:flex-start;flex-direction:column}.footer-actions{margin-top:18px}.floating-support{left:16px;right:16px;bottom:16px;text-align:center}}
@media print{.site-header,.mobile-nav-panel,.reading-progress,.search-overlay,.hero-actions,.floating-support,.support-strip{display:none!important}.content{margin:0;padding:0}.hero{min-height:auto;color:#000;background:#fff;padding:0 0 32px}.section,.part-intro{break-inside:avoid}.part-intro{color:#000;background:#fff!important;border-top:3px solid #000}.site-footer{background:#fff;color:#000;padding:28px 0}.footer-link{display:none}}