:root{color-scheme:light;--ob-text: #0f172a;--ob-text-muted: rgba(15, 23, 42, .72);--ob-text-subtle: rgba(15, 23, 42, .55);--ob-text-inverse: #ffffff;--ob-surface: #ffffff;--ob-surface-raised: #ffffff;--ob-surface-sunken: #f8f9fb;--ob-surface-overlay: rgba(255, 255, 255, .95);--ob-surface-soft: rgba(0, 0, 0, .02);--ob-surface-inverse: #0f172a;--ob-border: rgba(0, 0, 0, .08);--ob-border-strong: rgba(0, 0, 0, .18);--ob-border-subtle: rgba(0, 0, 0, .04);--ob-backdrop: rgba(0, 0, 0, .4);--ob-success: #16a34a;--ob-success-soft: rgba(22, 163, 74, .12);--ob-warning: #f59e0b;--ob-warning-soft: rgba(245, 158, 11, .12);--ob-danger: #dc2626;--ob-danger-soft: rgba(220, 38, 38, .12);--ob-info: #2563eb;--ob-info-soft: rgba(37, 99, 235, .12);--ob-brand: #0ea5e9;--ob-brand-hover: #0284c7;--ob-brand-contrast: #ffffff;--ob-brand-soft: rgba(14, 165, 233, .12);--ob-accent: #22c55e;--ob-accent-hover: #16a34a;--ob-accent-contrast: #ffffff;--ob-accent-soft: rgba(34, 197, 94, .12);--ob-link: var(--ob-brand);--ob-link-hover: var(--ob-brand-hover);--ob-font-body: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;--ob-font-heading: var(--ob-font-body);--ob-font-mono: ui-monospace, "SF Mono", Menlo, monospace;--ob-text-xs: .75rem;--ob-text-sm: .875rem;--ob-text-base: 1rem;--ob-text-md: 1.125rem;--ob-text-lg: 1.25rem;--ob-text-xl: 1.5rem;--ob-text-2xl: 1.875rem;--ob-text-3xl: 2.25rem;--ob-text-4xl: 2.75rem;--ob-text-5xl: 3.75rem;--ob-weight-regular: 400;--ob-weight-medium: 500;--ob-weight-semibold: 600;--ob-weight-bold: 700;--ob-weight-extrabold: 800;--ob-weight-black: 900;--ob-leading-tight: 1.15;--ob-leading-snug: 1.3;--ob-leading-normal: 1.5;--ob-leading-relaxed: 1.7;--ob-tracking-tight: -.03em;--ob-tracking-snug: -.02em;--ob-tracking-normal: 0;--ob-tracking-wide: .03em;--ob-space-1: .25rem;--ob-space-2: .5rem;--ob-space-3: .75rem;--ob-space-4: 1rem;--ob-space-5: 1.25rem;--ob-space-6: 1.5rem;--ob-space-8: 2rem;--ob-space-10: 2.5rem;--ob-space-12: 3rem;--ob-space-16: 4rem;--ob-space-20: 5rem;--ob-space-24: 6rem;--ob-radius-none: 0;--ob-radius-sm: 4px;--ob-radius-md: 8px;--ob-radius-lg: 12px;--ob-radius-xl: 16px;--ob-radius-2xl: 24px;--ob-radius-pill: 9999px;--ob-shadow-xs: 0 1px 2px rgba(0, 0, 0, .04);--ob-shadow-sm: 0 2px 6px rgba(0, 0, 0, .06);--ob-shadow-md: 0 6px 18px rgba(0, 0, 0, .06);--ob-shadow-lg: 0 10px 30px rgba(0, 0, 0, .1);--ob-shadow-xl: 0 20px 50px rgba(0, 0, 0, .15);--ob-duration-fast: .15s;--ob-duration-base: .25s;--ob-duration-slow: .4s;--ob-easing-default: cubic-bezier(.4, 0, .2, 1);--ob-easing-emphasis: cubic-bezier(.16, 1, .3, 1);--ob-container-narrow: 640px;--ob-container-default: 860px;--ob-container-wide: 1120px;--ob-container-max: 1280px;--ob-z-dropdown: 100;--ob-z-sticky: 200;--ob-z-overlay: 300;--ob-z-modal: 400;--ob-z-toast: 500}body{margin:0;font-family:var(--ob-font-body);line-height:1.6;background:var(--ob-surface);color:var(--ob-text)}img{max-width:100%;height:auto}.ob-no-scroll{overflow:hidden}h1,h2,h3,h4,h5,h6,.ob-brand__text,.ob-footer__copyright,.ob-author__name,.ob-tldr__title,.ob-affiliate__name{font-family:var(--ob-font-heading)}.ob-container{max-width:var(--ob-container-default);margin:0 auto;padding:0 16px}.ob-container--wide{max-width:var(--ob-container-wide)}.ob-main{padding-top:28px;padding-bottom:56px}.ob-section{margin-top:3rem}.ob-section__title{font-size:var(--ob-text-xl);font-weight:var(--ob-weight-bold);letter-spacing:var(--ob-tracking-snug);margin-bottom:1.25rem}.ob-section__cta{margin-top:1.5rem;text-align:center}.ob-header{position:sticky;top:0;z-index:var(--ob-z-sticky);background:var(--ob-surface-overlay);backdrop-filter:blur(10px);border-bottom:1px solid var(--ob-border)}.ob-header__inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}.ob-brand{text-decoration:none;color:inherit;font-weight:var(--ob-weight-bold);letter-spacing:var(--ob-tracking-snug)}.ob-brand__text{font-size:var(--ob-text-lg)}@media(min-width:768px){.ob-header__hamburger{display:none}.ob-mobile-nav,.ob-mobile-nav__overlay{display:none!important}}.ob-header--centered .ob-header__inner{flex-direction:column;height:auto;padding:12px 0;gap:4px}.ob-header--centered .ob-brand__text{font-size:var(--ob-text-xl)}.ob-header--centered .ob-nav__list{justify-content:center}.ob-header--minimal{border-bottom:none}.ob-header--minimal .ob-header__inner{height:52px}.ob-header--minimal .ob-brand__text{font-size:var(--ob-text-md)}.ob-nav{display:none;align-items:center;gap:8px}@media(min-width:768px){.ob-nav{display:flex}}.ob-nav__list{list-style:none;margin:0;padding:0;display:flex;align-items:center;gap:10px}.ob-nav__item{margin:0;padding:0}.ob-nav__link{text-decoration:none;color:inherit;opacity:.85;font-size:15px;font-weight:650;padding:8px 10px;border-radius:10px}.ob-nav__link:hover{opacity:1;background:var(--ob-surface-sunken)}.ob-nav__dropdown{position:relative}.ob-nav__dropdown>summary{list-style:none;cursor:pointer}.ob-nav__dropdown>summary::-webkit-details-marker{display:none}.ob-nav__panel{position:absolute;top:calc(100% + 8px);right:0;min-width:220px;padding:8px;background:var(--ob-surface);color:var(--ob-text);border-radius:14px;border:1px solid var(--ob-border-strong);box-shadow:var(--ob-shadow-lg);z-index:50}.ob-nav__sublink{display:block;padding:8px 10px;border-radius:10px;text-decoration:none;color:inherit;font-size:14px;font-weight:600;opacity:.9}.ob-nav__sublink:hover{background:var(--ob-surface-sunken);opacity:1}.ob-header__hamburger{display:flex;align-items:center;justify-content:center;width:44px;height:44px;padding:0;border:none;background:transparent;cursor:pointer;color:var(--ob-text);border-radius:10px;flex-shrink:0}.ob-header__hamburger:hover{background:var(--ob-surface-sunken)}.ob-hamburger__icon--close,.ob-header__hamburger[aria-expanded=true] .ob-hamburger__icon--open{display:none}.ob-header__hamburger[aria-expanded=true] .ob-hamburger__icon--close{display:block}.ob-mobile-nav__overlay{position:fixed;inset:0;background:var(--ob-backdrop);z-index:8;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}.ob-mobile-nav__overlay.is-open{opacity:1;visibility:visible}.ob-mobile-nav{position:fixed;inset:64px 0 0;z-index:9;background:var(--ob-surface-raised);overflow-y:auto;-webkit-overflow-scrolling:touch;transform:translate(100%);transition:transform .3s ease}.ob-mobile-nav.is-open{transform:translate(0)}.ob-mobile-nav__list{list-style:none;margin:0;padding:8px 0}.ob-mobile-nav__item{border-bottom:1px solid var(--ob-border)}.ob-mobile-nav__link{display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:12px 20px;text-decoration:none;color:var(--ob-text);font-size:16px;font-weight:600}a.ob-mobile-nav__link:active{background:var(--ob-surface-sunken)}.ob-mobile-nav__dropdown>summary{list-style:none;cursor:pointer}.ob-mobile-nav__dropdown>summary::-webkit-details-marker{display:none}.ob-mobile-nav__chevron{flex-shrink:0;transition:transform .2s ease}.ob-mobile-nav__dropdown[open]>summary .ob-mobile-nav__chevron{transform:rotate(180deg)}.ob-mobile-nav__panel{padding:0 0 8px;background:var(--ob-surface-soft)}.ob-mobile-nav__sublink{display:block;min-height:44px;padding:10px 20px 10px 36px;text-decoration:none;color:var(--ob-text);font-size:15px;font-weight:500;opacity:.85;line-height:1.4}.ob-mobile-nav__sublink:active{background:var(--ob-surface-sunken);opacity:1}.ob-footer{background:var(--ob-surface-overlay);backdrop-filter:blur(10px);border-top:1px solid var(--ob-border);padding:2rem 0;margin-top:3rem}.ob-footer__inner{display:flex;align-items:flex-start;justify-content:space-between;gap:1.25rem}.ob-footer__left{display:grid;gap:.35rem}.ob-footer__copyright{font-size:.95rem;font-weight:var(--ob-weight-bold);letter-spacing:var(--ob-tracking-snug);opacity:.85}.ob-footer__note{font-size:.9rem;opacity:.7}.ob-footer__links{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;justify-content:flex-end;line-height:1.6}.ob-footer__link{font-size:.95rem;text-decoration:none;opacity:.9;color:inherit}.ob-footer__link:hover{text-decoration:underline}.ob-footer__sep{opacity:.45}@media(max-width:640px){.ob-footer__inner{flex-direction:column;align-items:center;text-align:center}.ob-footer__links{justify-content:center}}.ob-hero{position:relative;border-radius:var(--ob-radius-2xl);overflow:hidden;min-height:340px;border:1px solid var(--ob-border);background:var(--ob-surface-overlay);display:flex;align-items:center;justify-content:center;margin-bottom:32px}.ob-hero__bg{position:absolute;inset:0;transform:scale(1.03);z-index:0}.ob-hero__bg :global(img){width:100%;height:100%;object-fit:cover;object-position:center;display:block}.ob-hero__overlay{position:absolute;inset:0;background:var(--ob-backdrop);z-index:1}.ob-hero__content{position:relative;padding:32px 18px;text-align:center;color:var(--ob-text-inverse);max-width:820px;margin:0 auto;z-index:2}.ob-hero__title{margin:0 0 10px;font-size:var(--ob-text-4xl);line-height:1.05;letter-spacing:var(--ob-tracking-tight);font-weight:var(--ob-weight-black)}.ob-hero__subtitle{margin:0 0 18px;opacity:.95}.ob-hero__cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.ob-btn{text-decoration:none;display:inline-flex;align-items:center;justify-content:center;padding:var(--ob-space-3) var(--ob-space-4);border-radius:var(--ob-radius-lg);font-weight:var(--ob-weight-bold);border:1px solid transparent}.ob-btn--primary{background:var(--ob-brand);color:var(--ob-brand-contrast)}.ob-btn--secondary{background:var(--ob-surface-sunken);color:var(--ob-text);border:1px solid var(--ob-border)}.ob-article-grid{display:grid;grid-template-columns:1fr;gap:14px}.ob-article-grid--cards{gap:22px}@media(min-width:760px){.ob-article-grid--cards{grid-template-columns:repeat(3,minmax(0,1fr))}}.ob-article-card{display:grid;grid-template-columns:120px 1fr;gap:14px;padding:14px;border-radius:var(--ob-radius-xl);border:1px solid var(--ob-border);text-decoration:none;color:inherit;background:var(--ob-surface-overlay)}.ob-article-card:hover{border-color:var(--ob-border-strong)}.ob-article-card--stacked{display:flex;flex-direction:column;padding:0;overflow:hidden;background:var(--ob-surface-raised);box-shadow:var(--ob-shadow-md)}.ob-article-card--stacked:hover{box-shadow:var(--ob-shadow-lg);transform:translateY(-1px)}.ob-article-thumb{width:120px;height:90px;border-radius:var(--ob-radius-lg);overflow:hidden;background:var(--ob-surface-sunken)}.ob-article-card--stacked .ob-article-thumb{width:100%;height:190px;border-radius:0}.ob-article-thumb img{width:100%;height:100%;object-fit:cover}.ob-article-meta{display:flex;flex-direction:column;gap:6px;padding:14px 16px 16px}.ob-article-title{margin:0;font-size:var(--ob-text-md);line-height:1.25;font-weight:var(--ob-weight-extrabold)}.ob-article-excerpt{font-size:var(--ob-text-sm);opacity:.85;line-height:1.45}.ob-article-date{font-size:var(--ob-text-xs);opacity:.7}.ob-article-readmore{margin-top:12px;font-size:13px;font-weight:var(--ob-weight-extrabold);color:var(--ob-link)}.ob-thumb-fallback{width:100%;height:100%;background:linear-gradient(135deg,#0000001a,#00000005)}.ob-page-title{margin:8px 0 18px;font-size:28px;line-height:1.15;font-weight:900}.ob-page-header{margin:6px 0 18px}.ob-page-subtitle{font-size:var(--ob-text-sm);opacity:.75}.ob-pagination{display:flex;align-items:center;justify-content:center;gap:.75rem;margin:2rem 0 1rem}.ob-pagination__pages{display:flex;align-items:center;gap:.35rem}.ob-pagination__btn,.ob-pagination__page{display:inline-flex;align-items:center;justify-content:center;padding:.45rem .7rem;border-radius:10px;border:1px solid var(--ob-border-strong);background:#fff;text-decoration:none;color:inherit;font-size:.95rem}.ob-pagination__page.is-current{font-weight:700;border-color:#0f172a40}.ob-pagination__btn.is-disabled{opacity:.45;pointer-events:none}.ob-pagination__ellipsis{padding:0 .35rem;opacity:.6}.ob-taxonomy-grid{margin-top:2rem}.ob-taxonomy-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1.25rem}.ob-taxonomy-card{margin:0}.ob-taxonomy-card__link{display:flex;flex-direction:column;height:100%;overflow:hidden;border:1px solid var(--ob-border);border-radius:14px;background:var(--ob-surface-raised);text-decoration:none;color:inherit;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}.ob-taxonomy-card__link:hover{transform:translateY(-2px);border-color:#00000026;box-shadow:0 6px 20px #0000000f}.ob-taxonomy-card__link:hover .ob-taxonomy-card__image img{transform:scale(1.05)}.ob-taxonomy-card__image{aspect-ratio:16 / 9;overflow:hidden;background:var(--ob-surface-soft)}.ob-taxonomy-card__image img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.ob-taxonomy-card__body{padding:1rem 1.2rem 1.2rem;flex:1}.ob-taxonomy-card__top{display:flex;align-items:baseline;justify-content:space-between;gap:.75rem}.ob-taxonomy-card__title{margin:0;font-size:1.1rem;font-weight:600;line-height:1.3}.ob-taxonomy-card__count{flex-shrink:0;font-size:.8rem;font-variant-numeric:tabular-nums;padding:.2rem .55rem;border-radius:999px;background:#0000000f;color:#000000b3}.ob-taxonomy-card__desc{margin:.5rem 0 0;font-size:.9rem;line-height:1.5;color:var(--ob-text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.ob-taxonomy-intro{margin:18px 0 26px;padding:14px;border-radius:16px;border:1px solid var(--ob-border);background:var(--ob-surface-soft);width:100%}.ob-taxonomy-intro p{margin:0 0 .9rem}.ob-taxonomy-intro p:last-child{margin-bottom:0}.ob-taxonomy__intro{max-width:none;width:100%}.ob-taxonomy__intro--plain{background:transparent;border:0;padding:0}@media(max-width:640px){.ob-taxonomy-list{grid-template-columns:1fr}}.ob-toc{font-size:.9rem;line-height:1.5}.ob-toc__toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:0;border:none;background:none;cursor:pointer;color:inherit;font:inherit}.ob-toc__title{font-weight:600;font-size:.95rem;color:var(--ob-text-muted)}.ob-toc__chevron{transition:transform .2s ease;color:var(--ob-text-muted)}.ob-toc__toggle[aria-expanded=true] .ob-toc__chevron{transform:rotate(180deg)}.ob-toc__list{list-style:none;padding:0;margin:.75rem 0 0}.ob-toc__item{margin:0}.ob-toc__item a{display:block;padding:4px 0 4px 12px;color:var(--ob-text-subtle);text-decoration:none;border-left:2px solid transparent;transition:color .15s ease,border-color .15s ease}.ob-toc__item a:hover{color:var(--ob-text)}.ob-toc__item.is-active a{color:var(--ob-brand);border-left-color:var(--ob-brand);font-weight:600}.ob-toc__indent-0 a{padding-left:12px}.ob-toc__indent-1 a{padding-left:24px}.ob-toc__indent-2 a{padding-left:36px}@media(max-width:1099px){.ob-toc{margin:18px 0 26px;padding:14px;border-radius:12px;border:1px solid var(--ob-border);background:var(--ob-surface-soft)}.ob-toc__list{max-height:0;overflow:hidden;transition:max-height .3s ease;margin:0}.ob-toc__list.is-open{max-height:80vh;margin-top:.75rem}}@media(min-width:1100px){.ob-toc{position:sticky;top:96px;max-height:calc(100vh - 128px);overflow-y:auto;margin-top:2rem;padding:1.25rem;background:var(--ob-surface-soft);border-radius:12px;border:1px solid var(--ob-border)}.ob-toc__toggle{cursor:default}.ob-toc__chevron{display:none}.ob-toc__list{max-height:none;overflow:visible;margin-top:.75rem}}.ob-tldr{margin-block:1.5rem;padding:1rem 1.25rem;background:var(--ob-surface-soft);border-left:4px solid var(--ob-brand);border-radius:0 .5rem .5rem 0}.ob-tldr__header{display:flex;align-items:center;gap:.5rem;margin-bottom:.75rem}.ob-tldr__icon{font-size:1.1rem}.ob-tldr__title{font-size:.95rem;text-transform:uppercase;letter-spacing:.03em;color:var(--ob-text)}.ob-tldr__list{margin:0;padding-left:1.25rem;list-style:disc}.ob-tldr__list li{margin-bottom:.35rem;line-height:1.5;color:var(--ob-text)}.ob-tldr__list li:last-child{margin-bottom:0}.ob-tldr__text{margin:0;line-height:1.6;color:var(--ob-text)}.ob-related{margin-block:2rem;padding:1.25rem 1.5rem;background:var(--ob-surface-soft);border-radius:.5rem;border:1px solid var(--ob-border)}.ob-related__header{display:flex;align-items:center;gap:.5rem;margin-bottom:1rem}.ob-related__icon{font-size:1.1rem}.ob-related__title{font-size:var(--ob-text-base);color:var(--ob-text)}.ob-related__list{margin:0;padding-left:1.25rem;list-style:disc}.ob-related__list li{margin-bottom:.5rem;line-height:1.5}.ob-related__list li:last-child{margin-bottom:0}.ob-related__list a{color:var(--ob-link);text-decoration:none}.ob-related__list a:hover{text-decoration:underline}.ob-featured{margin:2.5rem 0}.ob-featured__title{margin:0 0 1.25rem;font-size:1.35rem;font-weight:600;color:var(--ob-text)}.ob-featured__grid{display:grid;grid-template-columns:1fr;gap:1.25rem}@media(min-width:640px){.ob-featured__grid{grid-template-columns:repeat(2,1fr)}}.ob-featured__card{display:flex;flex-direction:column;text-decoration:none;color:inherit;border-radius:var(--ob-radius-lg);overflow:hidden;background:var(--ob-surface-raised);border:1px solid var(--ob-border);transition:transform var(--ob-duration-fast) var(--ob-easing-default),box-shadow var(--ob-duration-fast) var(--ob-easing-default),border-color var(--ob-duration-fast) var(--ob-easing-default)}.ob-featured__card:hover{transform:translateY(-3px);border-color:var(--ob-border-strong);box-shadow:var(--ob-shadow-md)}.ob-featured__card:hover .ob-featured__image img{transform:scale(1.05)}.ob-featured__card:hover .ob-featured__readmore{color:var(--ob-link)}.ob-featured__image{aspect-ratio:16 / 10;overflow:hidden;background:var(--ob-surface-soft)}.ob-featured__image img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.ob-featured__placeholder{width:100%;height:100%;background:linear-gradient(135deg,var(--ob-surface-soft) 0%,var(--ob-border) 100%)}.ob-featured__body{display:flex;flex-direction:column;gap:.5rem;padding:1rem 1.15rem 1.15rem;flex:1}.ob-featured__card-title{margin:0;font-size:1.1rem;font-weight:600;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.ob-featured__excerpt{margin:0;font-size:.9rem;line-height:1.55;color:var(--ob-text-muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.ob-featured__readmore{margin-top:auto;font-size:.88rem;font-weight:600;color:var(--ob-text-muted);transition:color .15s ease}.ob-featured__hero-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:320px 320px;gap:22px}.ob-featured__hero-grid .ob-featured__card--overlay:first-child{grid-row:1 / 3}@media(max-width:900px){.ob-featured__hero-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}.ob-featured__hero-grid .ob-featured__card--overlay:first-child{grid-row:auto;grid-column:1 / 3;height:320px}.ob-featured__hero-grid .ob-featured__card--overlay{height:240px}}@media(max-width:600px){.ob-featured__hero-grid{grid-template-columns:1fr}.ob-featured__hero-grid .ob-featured__card--overlay:first-child{grid-column:auto;height:300px}.ob-featured__hero-grid .ob-featured__card--overlay{height:220px}}.ob-featured__card--overlay{position:relative;display:block;overflow:hidden;border-radius:var(--ob-radius-xl);text-decoration:none;color:var(--ob-text-inverse);box-shadow:var(--ob-shadow-md);transition:transform var(--ob-duration-base) 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