:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-primary-light: #3b82f6;--color-dark: #181b31;--color-dark-alt: #0d1229;--color-green: #0fc978;--color-yellow: #f5c518;--color-red: #e53e3e;--color-white: #ffffff;--color-light: #f8f9fa;--color-light-gray: #f0f2f5;--color-gray: #6e7982;--color-gray-light: #9ca3af;--color-border: #e4e4e4;--color-border-dark: rgba(255,255,255,.12);--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--fs-xs: .75rem;--fs-sm: .8125rem;--fs-base: .9375rem;--fs-md: 1rem;--fs-lg: 1.0625rem;--fs-xl: 1.125rem;--fs-2xl: 1.25rem;--fs-3xl: 1.5rem;--fs-4xl: 2rem;--fs-5xl: 2.5rem;--fs-hero: clamp(2.5rem, 6vw, 5.625rem);--fw-light: 300;--fw-normal: 400;--fw-medium: 500;--fw-semibold: 600;--fw-bold: 700;--fw-extrabold: 800;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 20px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);--shadow-md: 0 4px 12px rgba(0,0,0,.1), 0 2px 4px rgba(0,0,0,.06);--shadow-lg: 0 10px 40px rgba(0,0,0,.12), 0 4px 12px rgba(0,0,0,.08);--shadow-xl: 0 20px 60px rgba(0,0,0,.15), 0 8px 20px rgba(0,0,0,.1);--container-max: 1320px;--container-pad: clamp(1rem, 4vw, 2rem);--header-h: 72px;--topbar-h: 42px;--transition: .2s ease;--transition-slow: .35s 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var(--transition);white-space:nowrap;text-decoration:none;line-height:1}.btn--primary{background:var(--color-primary);color:#fff}.btn--primary:hover{background:var(--color-primary-dark);transform:translateY(-1px);box-shadow:0 6px 20px #2563eb4d}.btn--yellow{background:var(--color-yellow);color:var(--color-dark)}.btn--yellow:hover{background:#e5b800;transform:translateY(-1px)}.btn--outline{border-color:var(--color-border);color:var(--color-dark);background:#fff}.btn--outline:hover{border-color:var(--color-primary);color:var(--color-primary)}.btn--ghost{color:#ffffffd9;border-color:#ffffff4d}.btn--ghost:hover{background:#ffffff1a;border-color:#fff9;color:#fff}.btn--lg{padding:.9rem 2.2rem;font-size:var(--fs-lg)}.btn--sm{padding:.45rem 1.1rem;font-size:var(--fs-sm)}.btn--full{width:100%}.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--color-border);transition:box-shadow var(--transition)}.site-header.is-scrolled{box-shadow:0 2px 16px #00000014}.nav{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:1.5rem}.nav__logo{display:flex;align-items:center;flex-shrink:0;text-decoration:none}.nav__logo-img{height:38px;width:auto;display:block}.nav__menu{display:flex;align-items:center;gap:.25rem;flex:1}.nav__item{position:relative}.nav__link,.nav__link--btn{display:flex;align-items:center;gap:4px;padding:.45rem .85rem;font-size:var(--fs-sm);font-weight:var(--fw-medium);color:#374151;border-radius:var(--radius-md);transition:background var(--transition),color var(--transition);white-space:nowrap;background:none;border:none;cursor:pointer}.nav__link:hover,.nav__link--btn:hover,.nav__link--btn[aria-expanded=true]{background:#f3f4f6;color:var(--color-primary)}.nav__link--btn svg{transition:transform var(--transition)}.nav__link--btn[aria-expanded=true] svg{transform:rotate(180deg)}.mega-menu{position:absolute;top:calc(100% + 10px);left:0;width:max-content;max-width:min(640px,calc(100vw - 2rem));min-width:min(420px,calc(100vw - 2rem));background:#fff;border:1px solid #e5e7eb;border-radius:var(--radius-lg);box-shadow:0 20px 60px #0000001f,0 4px 16px #0000000f;padding:1.25rem;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .18s ease,transform .18s ease,visibility .18s;z-index:200;overflow:hidden}.mega-menu.is-open{opacity:1;visibility:visible;transform:translateY(0)}.mega-menu__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.4rem}.mega-menu__item{display:flex;align-items:center;gap:.75rem;min-width:0;padding:.7rem .85rem;border-radius:var(--radius-md);transition:background var(--transition);text-decoration:none;color:inherit}.mega-menu__item:hover{background:#f9fafb}.mega-menu__icon{width:38px;height:38px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.25rem;flex-shrink:0}.mega-menu__info{display:flex;flex-direction:column;min-width:0}.mega-menu__info strong{font-size:var(--fs-sm);font-weight:var(--fw-semibold);color:var(--color-dark);line-height:1.3}.mega-menu__info span{font-size:var(--fs-xs);color:#6b7280;line-height:1.4;margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}@media(max-width:480px){.mega-menu__grid{grid-template-columns:minmax(0,1fr)}.mega-menu{min-width:min(320px,calc(100vw - 2rem))}}.mega-menu--wide{max-width:min(760px,calc(100vw - 2rem))}.mega-menu__grid--3col{grid-template-columns:repeat(3,minmax(0,1fr))}@media(max-width:900px){.mega-menu__grid--3col{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:480px){.mega-menu__grid--3col{grid-template-columns:minmax(0,1fr)}}.mega-menu__viewall{display:block;text-align:center;margin-top:.5rem;padding-top:.85rem;border-top:1px solid #f3f4f6;font-size:var(--fs-sm);font-weight:var(--fw-semibold);color:var(--color-primary)}.mobile-menu__link.mobile-menu__link--main{font-weight:var(--fw-semibold);font-size:var(--fs-base);color:var(--color-primary)}.nav__actions{display:flex;align-items:center;gap:.75rem;flex-shrink:0}.nav__search-btn{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:var(--radius-md);color:#6b7280;transition:background var(--transition),color var(--transition)}.nav__search-btn:hover{background:#f3f4f6;color:var(--color-primary)}.nav__toggle{display:none;background:none;border:none;cursor:pointer;padding:.4rem;color:var(--color-dark);border-radius:var(--radius-md)}.nav__toggle:hover{background:#f3f4f6}.mobile-menu{position:fixed;inset:0;z-index:400;background:#fff;transform:translate(-100%);transition:transform .3s 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#f3f4f6}.mobile-menu__logo{display:flex;align-items:center;text-decoration:none}.mobile-menu__logo-img{height:30px;width:auto;display:block}.mobile-menu__close{background:#f3f4f6;border:none;border-radius:var(--radius-md);width:36px;height:36px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:#374151}.mobile-menu__label{font-size:var(--fs-xs);font-weight:var(--fw-semibold);text-transform:uppercase;letter-spacing:.08em;color:#9ca3af;margin-bottom:.5rem;margin-top:.25rem}.mobile-menu__nav{display:flex;flex-direction:column}.mobile-menu__link{display:flex;align-items:center;gap:.75rem;padding:.7rem .5rem;font-size:var(--fs-sm);font-weight:var(--fw-medium);color:#374151;border-bottom:1px solid #f3f4f6;transition:color var(--transition)}.mobile-menu__link:hover{color:var(--color-primary)}.mobile-menu__divider{height:1px;background:#e5e7eb;margin:.75rem 0}.hero-page{background:var(--color-dark);background-image:linear-gradient(135deg,var(--color-dark-alt) 0%,#1e2560 100%);padding:clamp(2.5rem,5vw,4rem) 0;color:#fff;position:relative;overflow:hidden}.hero-page:before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 70% 50%,rgba(37,99,235,.35) 0%,transparent 65%);pointer-events:none}.hero-page .container{position:relative}.hero-page h1{color:#fff;margin-bottom:.75rem}.hero-page p{color:#ffffffb8;font-size:var(--fs-lg);max-width:65ch;margin-bottom:0}.hero-page__meta{margin-top:1rem;font-size:var(--fs-sm);color:#ffffff8c}.hero-page p.hero-page__meta{font-size:var(--fs-sm);color:#ffffff8c}.hero-badge{display:inline-flex;align-items:center;gap:.4rem;padding:.3rem .85rem;border-radius:var(--radius-full);border:1px solid;font-size:var(--fs-xs);font-weight:var(--fw-semibold);text-transform:uppercase;letter-spacing:.06em;margin-bottom:1rem}.hero-home{background:var(--color-dark);background-image:linear-gradient(135deg,var(--color-dark-alt) 0%,#1e2560 50%,var(--color-dark) 100%);min-height:min(80vh,600px);display:flex;align-items:center;padding:var(--space-16) 0;color:#fff;position:relative;overflow:hidden}.hero-home:before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 25% 60%,rgba(37,99,235,.4) 0%,transparent 60%);pointer-events:none}.hero-home>.container{position:relative}.hero-home h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:var(--fw-extrabold);color:#fff;line-height:1.1;letter-spacing:-.03em;margin-bottom:1.25rem}.hero-home__sub{font-size:var(--fs-lg);color:#ffffffa6;max-width:55ch;line-height:1.8;margin-bottom:2rem}.hero-home__ctas{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:3rem}.hero-home__stats{display:flex;gap:2.5rem;flex-wrap:wrap}.hero-home__stat strong{display:block;font-size:var(--fs-3xl);font-weight:var(--fw-extrabold);color:var(--color-yellow)}.hero-home__stat span{font-size:var(--fs-sm);color:#ffffff8c}.hero-home__grid{display:grid;grid-template-columns:1.15fr 1fr;gap:3rem;align-items:center}.hero-home__content{max-width:640px}.hero-home__badge{display:inline-flex;align-items:center;gap:.5rem;padding:.45rem 1rem;margin-bottom:1.5rem;background:#ffffff14;border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-full);font-size:var(--fs-xs);font-weight:var(--fw-semibold);color:#ffffffe6}.text-gradient{background:linear-gradient(90deg,#7c94ff 0%,var(--color-yellow) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}.hero-home__visual{position:relative;display:flex;justify-content:center}.hero-notebook{width:100%;max-width:380px;background:#10142c;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 30px 80px #00000080,0 0 0 1px #ffffff08;transform:rotate(1.5deg)}.hero-notebook__bar{display:flex;align-items:center;gap:.4rem;padding:.75rem 1rem;background:#ffffff0a;border-bottom:1px solid rgba(255,255,255,.08)}.hero-notebook__bar span{width:10px;height:10px;border-radius:50%}.hero-notebook__bar span:nth-child(1){background:#ff5f56}.hero-notebook__bar span:nth-child(2){background:#ffbd2e}.hero-notebook__bar span:nth-child(3){background:#27c93f}.hero-notebook__bar em{margin-left:auto;font-style:normal;font-size:var(--fs-xs);color:#fff6}.hero-notebook__body{padding:1.5rem;font-size:var(--fs-sm);line-height:2.1}.hero-notebook__body p{margin-bottom:0;color:#ffffffd9}.hero-notebook__body .t-muted{color:#fff6}.hero-notebook__body .t-green{color:var(--color-green)}.hero-notebook__body .t-cursor{display:inline-block;width:8px;height:1em;background:var(--color-yellow);animation:hero-blink 1s step-end infinite;vertical-align:middle}.hero-float{position:absolute;width:52px;height:52px;border-radius:var(--radius-lg);background:#fff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;box-shadow:var(--shadow-lg);animation:hero-float 4s ease-in-out infinite}.hero-float--1{top:-14px;left:-18px;animation-delay:0s}.hero-float--2{bottom:34px;right:-22px;animation-delay:1.3s}.hero-float--3{bottom:-16px;left:46px;animation-delay:2.6s}@keyframes hero-float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes hero-blink{50%{opacity:0}}@media(prefers-reduced-motion:reduce){.hero-float,.hero-notebook__body .t-cursor{animation:none}}@media(max-width:900px){.hero-home__grid{grid-template-columns:1fr}.hero-home__visual{display:none}.hero-home__content{max-width:none}}.section{padding:var(--space-16) 0}.section--light{background:#f9fafb}.section__title{font-size:clamp(1.5rem,3vw,2.125rem);font-weight:var(--fw-bold);color:var(--color-dark);letter-spacing:-.02em;margin-bottom:1rem}.section__desc{font-size:var(--fs-lg);color:#6b7280;max-width:58ch;margin-bottom:2.5rem}.section__head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;flex-wrap:wrap}.section__link{font-size:var(--fs-sm);font-weight:var(--fw-semibold);color:var(--color-primary);white-space:nowrap}.section__link:hover{color:var(--color-primary-dark)}.section__footer{text-align:center;margin-top:2rem}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;margin-top:2.5rem}.feature-card{background:#fff;border:1.5px solid var(--color-border);border-radius:var(--radius-lg);padding:1.75rem}.feature-icon{font-size:2rem;display:block;margin-bottom:1rem}.feature-card h3{margin-bottom:.5rem;font-size:1.05rem}.feature-card p{font-size:var(--fs-sm);margin-bottom:0}.quote{margin:1.75rem 0 0;padding:.25rem 0 .25rem 1.25rem;border-left:3px solid var(--color-primary);font-style:italic}.quote p{color:#4b5563;margin-bottom:0}.quote cite{display:block;margin-top:.5rem;font-style:normal;font-size:var(--fs-sm);font-weight:var(--fw-semibold);color:var(--color-dark)}.categories-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.25rem}.category-card{display:flex;align-items:center;gap:1rem;background:#fff;border:1.5px solid var(--color-border);border-radius:var(--radius-lg);padding:1.25rem 1.5rem;text-decoration:none;color:inherit;transition:all var(--transition)}.category-card:hover{border-color:var(--cat-color,var(--color-primary));box-shadow:0 8px 24px #00000014;transform:translateY(-2px)}.category-icon{font-size:2rem;flex-shrink:0}.category-info{min-width:0}.category-name{font-size:1rem;font-weight:var(--fw-semibold);color:var(--color-dark);margin-bottom:.2rem}.category-desc{font-size:var(--fs-xs);color:#6b7280;display:none}.category-count{font-size:var(--fs-xs);color:var(--cat-color,var(--color-primary));font-weight:var(--fw-semibold)}.categories-grid--compact{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem}.categories-grid--compact .category-card{padding:1rem 1.25rem}.categories-grid--compact .category-icon{font-size:1.6rem}.categories-grid--desc .category-desc{display:block;margin-bottom:.25rem;line-height:1.5}.breadcrumb-nav{background:#0d1229}.breadcrumb{display:flex;align-items:center;gap:.5rem;font-size:var(--fs-xs);color:#ffffff8c;padding:.65rem 0;flex-wrap:wrap}.breadcrumb li{display:inline-flex;align-items:center;gap:.5rem;min-width:0}.breadcrumb a{color:#ffffffb3;transition:color var(--transition)}.breadcrumb a:hover{color:#fff}.breadcrumb__sep{color:#ffffff4d}.breadcrumb [aria-current=page]{color:#ffffffe6;font-weight:var(--fw-medium)}.banner-cta{background:linear-gradient(135deg,var(--color-primary) 0%,#1e2560 100%);border-radius:var(--radius-lg);padding:1.25rem 1.5rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}.banner-cta-inner{display:contents}.banner-cta-text{display:flex;flex-direction:column;gap:.2rem}.banner-cta-text strong{color:#fff;font-size:var(--fs-sm);font-weight:var(--fw-bold)}.banner-cta-text span{color:#ffffffbf;font-size:var(--fs-xs)}.banner-cta-wrap{margin-top:var(--space-8)}.article-sidebar .banner-cta{flex-direction:column;align-items:flex-start}.footer{background:var(--color-dark-alt);color:#ffffffb3;padding-top:var(--space-16)}.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr 1.1fr;gap:2rem;padding-bottom:3rem;border-bottom:1px solid rgba(255,255,255,.08)}.footer__logo{display:flex;align-items:center;text-decoration:none;margin-bottom:1.1rem}.footer__logo-img{height:34px;width:auto;display:block}.footer__desc{font-size:var(--fs-sm);line-height:1.75;margin-bottom:1.25rem;color:#ffffffb3}.footer__social{display:flex;gap:.6rem}.footer__social a{width:34px;height:34px;background:#ffffff14;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;color:#fff9;transition:all var(--transition)}.footer__social a:hover{background:var(--color-primary);color:#fff}.footer__col-title{font-size:var(--fs-xs);font-weight:var(--fw-semibold);color:#fff;text-transform:uppercase;letter-spacing:.07em;margin-bottom:1rem}.footer__links{display:flex;flex-direction:column;gap:.45rem}.footer__links a{font-size:var(--fs-sm);color:#fff9;transition:color var(--transition);line-height:1.5}.footer__links a:hover{color:#fff}.footer__cta{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;background:#2563eb40;border:1px solid rgba(37,99,235,.4);border-radius:var(--radius-lg);padding:1.25rem 1.75rem;margin:2rem 0}.footer__cta-text{display:flex;flex-direction:column;gap:.25rem}.footer__cta-text strong{color:#fff;font-size:var(--fs-base)}.footer__cta-text span{font-size:var(--fs-sm);color:#ffffffa6}.footer__bottom{border-top:1px solid rgba(255,255,255,.07);padding:1.25rem 0}.footer__bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.footer__bottom p{font-size:var(--fs-xs);color:#fff6;margin-bottom:0}.footer__bottom-links{display:flex;gap:.5rem 1.5rem;flex-wrap:wrap}.footer__bottom-links a{font-size:var(--fs-xs);color:#fff6;transition:color var(--transition)}.footer__bottom-links 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