:root{--color-primary: #306194;--color-on-primary: #ffffff;--color-secondary: #4f6075;--color-tertiary: #7b4d85;--color-bg: #fcf8f8;--color-surface: #f6f3f2;--color-surface-strong: #ebe7e7;--color-text: #1c1b1c;--color-text-muted: #45474b;--color-outline: #c5c6cb;--font-family-base: Roboto, Arial, sans-serif}body.dark{--color-primary: #a0c9ff;--color-on-primary: #003259;--color-secondary: #b7c8e1;--color-tertiary: #ebb4f4;--color-bg: #131313;--color-surface: #1c1b1c;--color-surface-strong: #2a2a2a;--color-text: #e5e2e1;--color-text-muted: #c5c6cb;--color-outline: #45474b}*{box-sizing:border-box}html,body{margin:0;padding:0}body{min-height:100vh;display:flex;flex-direction:column;font-family:var(--font-family-base);font-size:1rem;font-weight:400;line-height:1.5;color:var(--color-text);background-color:var(--color-bg)}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2;margin:0 0 .75rem}p{margin:0 0 1rem;color:var(--color-text-muted)}a{color:var(--color-primary)}a:focus-visible,button:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.layout-shell{width:min(100% - 2rem,1200px);margin-inline:auto}.site-header{position:sticky;top:0;z-index:20;background:color-mix(in srgb, var(--color-bg) 92%, transparent);border-bottom:1px solid var(--color-outline);backdrop-filter:blur(8px)}.site-nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:1rem}.brand{display:inline-flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--color-text)}.brand__logo{width:2.25rem;height:2.25rem;object-fit:contain}.brand__text{font-size:1.125rem;font-weight:700}.site-nav__menu{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex:1}.site-nav__links{list-style:none;display:flex;gap:1.5rem;margin:0;padding:0;margin-left:auto}.site-nav__links a{text-decoration:none;color:var(--color-text);font-weight:500}.site-nav__actions{display:inline-flex;align-items:center;gap:.75rem}.btn-login{display:inline-flex;align-items:center;justify-content:center;border-radius:.5rem;border:1px solid var(--color-primary);background:var(--color-primary);color:var(--color-on-primary);text-decoration:none;font-weight:700;padding:.6rem 1rem}.theme-toggle{width:2.5rem;height:2.5rem;border-radius:50%;border:1px solid var(--color-outline);background:var(--color-surface);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.theme-toggle__icon{width:1.1rem;height:1.1rem}.theme-toggle__icon--moon{display:none}body.dark .theme-toggle__icon--sun{display:none}body.dark .theme-toggle__icon--moon{display:block}.nav-toggle{display:none;width:2.5rem;height:2.5rem;border:1px solid var(--color-outline);border-radius:.5rem;background:var(--color-surface);align-items:center;justify-content:center;flex-direction:column;gap:.25rem}.nav-toggle__line{width:1rem;height:2px;background-color:var(--color-text)}.site-main{width:100%;flex:1;padding-top:2rem;padding-bottom:2rem}.site-footer{border-top:1px solid var(--color-outline);background:var(--color-surface)}.site-footer__content{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-block:1.5rem}.site-footer__links{list-style:none;margin:0;padding:0;display:flex;gap:1rem}.site-footer__links a{color:var(--color-text-muted);text-decoration:none}.site-footer__copyright{margin:0;color:var(--color-text-muted);font-size:.95rem}@media(max-width: 900px){.nav-toggle{display:inline-flex}.site-nav__menu{position:absolute;top:calc(72px - .25rem);left:1rem;right:1rem;flex-direction:column;align-items:stretch;gap:1rem;background:var(--color-bg);border:1px solid var(--color-outline);border-radius:.75rem;padding:1rem;display:none}.site-nav__menu.is-open{display:flex}.site-nav__links{flex-direction:column;gap:.75rem;margin-left:0}.site-nav__actions{justify-content:space-between}.site-footer__content{flex-direction:column;align-items:flex-start}}