:root{--hex-1:#4f7cff;--hex-2:#7b5cff;--hex-3:#00c2a8;--bg:#ffffff;--bg-soft:#f6f7fb;--bg-sunk:#eef0f7;--surface:#ffffff;--surface-2:#f9fafd;--border:#e3e6f0;--border-strong:#cfd4e4;--text:#10131c;--text-soft:#4b5266;--text-muted:#6f7689;--accent:var(--hex-1);--accent-ink:#ffffff;--accent-soft:rgba(79,124,255,0.1);--ok:#17845b;--warn:#a86500;--warn-soft:rgba(245,165,36,0.12);--tip-soft:rgba(0,194,168,0.1);--radius-s:8px;--radius:14px;--radius-l:22px;--shadow-s:0 1px 2px rgba(16,19,28,0.05);--shadow:0 4px 20px rgba(16,19,28,0.07);--shadow-l:0 18px 50px rgba(16,19,28,0.12);--maxw:1180px;--maxw-read:46rem;--font-sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--font-display:var(--font-sans);--font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}@media (prefers-color-scheme:dark){:root{--bg:#0b0d14;--bg-soft:#10131d;--bg-sunk:#070910;--surface:#141826;--surface-2:#191e2e;--border:#242a3d;--border-strong:#333b54;--text:#eef1f8;--text-soft:#aeb6cb;--text-muted:#8b93aa;--accent:#7d9bff;--accent-ink:#0b0d14;--accent-soft:rgba(125,155,255,0.14);--ok:#3ddba0;--warn:#f2b23e;--warn-soft:rgba(242,178,62,0.12);--tip-soft:rgba(0,194,168,0.14);--shadow-s:0 1px 2px rgba(0,0,0,0.4);--shadow:0 6px 26px rgba(0,0,0,0.45);--shadow-l:0 22px 60px rgba(0,0,0,0.55)}}*,:after,:before{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:after,:before{animation-duration:.001ms!important;transition-duration:.001ms!important}}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}img,svg,video{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}h1,h2,h3,h4{font-family:var(--font-display);line-height:1.18;letter-spacing:-.021em;margin:0 0 .5em;font-weight:700}h1{font-size:clamp(2rem,1.3rem + 2.8vw,3.1rem);letter-spacing:-.03em}h2{font-size:clamp(1.45rem,1.15rem + 1.2vw,1.95rem)}h3{font-size:clamp(1.15rem,1.05rem + .5vw,1.35rem)}p{margin:0 0 1.1em}ol,ul{margin:0 0 1.2em;-webkit-padding-start:1.35em;padding-inline-start:1.35em}li{margin-bottom:.5em}hr{border:0;border-top:1px solid var(--border);margin:2.5rem 0}:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}::selection{background:var(--accent-soft)}[dir=rtl] body{font-family:var(--font-sans)}[dir=rtl]{letter-spacing:0!important}[dir=rtl] h1,[dir=rtl] h2,[dir=rtl] h3{letter-spacing:0;line-height:1.35}[dir=rtl] li,[dir=rtl] p{line-height:1.9}.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:20px}.stack>*+*{margin-top:var(--gap,1rem)}.section{padding-block:clamp(3rem,6vw,5rem)}.section-sunk{background:var(--bg-soft);border-block:1px solid var(--border)}.kicker{display:inline-flex;align-items:center;gap:8px;font-size:.775rem;font-weight:650;letter-spacing:.09em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);padding:6px 12px;border-radius:999px}[dir=rtl] .kicker{letter-spacing:0;text-transform:none}.lead{font-size:1.15rem;color:var(--text-soft);max-width:48rem}.muted{color:var(--text-muted)}.sr-only{width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.skip,.sr-only{position:absolute}.skip{inset-inline-start:-9999px;top:0;z-index:200;background:var(--accent);color:var(--accent-ink);padding:12px 18px;border-radius:0 0 var(--radius-s) 0}.skip:focus{inset-inline-start:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 22px;border-radius:999px;font-weight:620;font-size:.97rem;border:1px solid transparent;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}.btn:hover{transform:translateY(-1px)}.btn-primary{background:linear-gradient(135deg,var(--hex-1),var(--hex-2));color:#fff;box-shadow:0 8px 24px rgba(79,124,255,.3)}.btn-primary:hover{box-shadow:0 12px 30px rgba(79,124,255,.38)}.btn-ghost{background:var(--surface);border-color:var(--border-strong);color:var(--text)}.btn-ghost:hover{background:var(--surface-2)}.card{display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-l);padding:22px;box-shadow:var(--shadow-s);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--border-strong)}.card h3{margin:0;font-size:1.08rem}.card p{margin:0;color:var(--text-soft);font-size:.94rem}.grid{display:grid;grid-gap:18px;gap:18px}.grid-3{grid-template-columns:repeat(auto-fit,minmax(270px,1fr))}.grid-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.tag{display:inline-block;font-size:.73rem;font-weight:620;letter-spacing:.05em;text-transform:uppercase;color:var(--text-muted);border:1px solid var(--border);border-radius:999px;padding:4px 10px}[dir=rtl] .tag{letter-spacing:0;text-transform:none}.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:100;background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:saturate(180%) blur(14px);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--border)}.header-row{display:flex;align-items:center;gap:18px;height:66px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:760;letter-spacing:-.02em;font-size:1.05rem}.brand-mark{width:30px;height:30px;flex:none}.brand-name .b1{color:var(--text)}.brand-name .b2{background:linear-gradient(135deg,var(--hex-1),var(--hex-2));-webkit-background-clip:text;background-clip:text;color:transparent}.nav-main{display:flex;align-items:center;gap:4px;-webkit-margin-start:auto;margin-inline-start:auto}.nav-link{padding:8px 13px;border-radius:999px;font-size:.93rem;font-weight:560;color:var(--text-soft);transition:background .15s ease,color .15s ease}.nav-link:hover,.nav-link[aria-current=page]{background:var(--accent-soft);color:var(--accent)}.header-tools{display:flex;align-items:center;gap:8px;-webkit-margin-start:6px;margin-inline-start:6px}.icon-btn{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text-soft)}.icon-btn:hover{color:var(--accent);border-color:var(--accent)}.lang-switch{position:relative}.lang-btn{display:inline-flex;align-items:center;gap:7px;padding:8px 12px;border-radius:999px;border:1px solid var(--border);background:var(--surface);font-size:.88rem;font-weight:600;color:var(--text-soft);cursor:pointer}.lang-btn:hover{border-color:var(--accent);color:var(--accent)}.lang-menu{position:absolute;inset-inline-end:0;top:calc(100% + 8px);min-width:168px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-l);padding:6px;display:grid;grid-gap:2px;gap:2px;z-index:120}.lang-menu a{padding:9px 12px;border-radius:var(--radius-s);font-size:.92rem;color:var(--text-soft);display:flex;justify-content:space-between;gap:12px}.lang-menu a:hover{background:var(--bg-soft);color:var(--text)}.lang-menu a[aria-current=true]{color:var(--accent);font-weight:650}.menu-toggle{display:none}.nav-drawer{display:contents}@media (max-width:900px){.nav-main{display:none}.menu-toggle{display:inline-grid}.nav-drawer.open{display:block;position:fixed;inset:66px 0 0;background:var(--bg);overflow-y:auto;padding:18px 20px 60px;z-index:90}.nav-drawer.open .nav-main{display:grid;grid-gap:4px;gap:4px;margin:0}.nav-drawer.open .nav-link{font-size:1.1rem;padding:14px 12px;border-radius:var(--radius)}}.hero{position:relative;overflow:hidden;padding-block:clamp(3.2rem,7vw,6rem)}.hero:before{content:"";position:absolute;inset:-30% -10% auto -10%;height:120%;background:radial-gradient(closest-side at 22% 28%,rgba(79,124,255,.2),transparent),radial-gradient(closest-side at 78% 18%,rgba(123,92,255,.16),transparent),radial-gradient(closest-side at 55% 82%,rgba(0,194,168,.14),transparent);pointer-events:none}.hero-inner{position:relative;display:grid;grid-gap:26px;gap:26px;max-width:54rem}.hero h1{margin:0}.hero-actions{gap:12px}.hero-actions,.hero-stats{display:flex;flex-wrap:wrap}.hero-stats{gap:28px;margin-top:8px}.hero-stat b{display:block;font-size:1.7rem;font-weight:760;letter-spacing:-.03em}.hero-stat span{font-size:.85rem;color:var(--text-muted)}.cat-tile{position:relative;overflow:hidden}.cat-tile .cat-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;color:#fff}.cat-tile .count{font-size:.8rem;color:var(--text-muted);font-weight:600}.article-head{padding-block:clamp(2rem,4vw,3rem) 1.2rem}.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;font-size:.88rem;color:var(--text-muted)}.article-meta a{color:var(--accent);font-weight:600}.dot{width:4px;height:4px;border-radius:50%;background:var(--border-strong)}.article-layout{display:grid;grid-template-columns:minmax(0,1fr);grid-gap:40px;gap:40px;align-items:start;padding-bottom:4rem}@media (min-width:1040px){.article-layout{grid-template-columns:minmax(0,1fr) 290px}}.prose{max-width:var(--maxw-read);font-size:1.06rem}.prose h2{margin-top:2.4rem}.prose h2,.prose h3{scroll-margin-top:90px}.prose h3{margin-top:1.8rem}.prose>p:first-of-type{font-size:1.16rem;color:var(--text-soft)}.toc{position:-webkit-sticky;position:sticky;top:86px;border:1px solid var(--border);border-radius:var(--radius-l);padding:18px 20px;background:var(--surface)}.toc h2{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:12px}[dir=rtl] .toc h2{letter-spacing:0;text-transform:none}.toc ol{list-style:none;margin:0;padding:0;display:grid;grid-gap:2px;gap:2px;counter-reset:toc}.toc a{display:block;padding:7px 10px;border-radius:var(--radius-s);font-size:.9rem;color:var(--text-soft);-webkit-border-start:2px solid transparent;border-inline-start:2px solid transparent}.toc a:hover{background:var(--bg-soft);color:var(--accent);border-inline-start-color:var(--accent)}.callout{border-radius:var(--radius);padding:16px 18px;margin:1.6rem 0;border:1px solid var(--border);background:var(--surface-2)}.callout .label{display:block;font-size:.74rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;margin-bottom:6px}[dir=rtl] .callout .label{letter-spacing:0;text-transform:none}.callout p{margin:0;font-size:.98rem}.callout-tip{background:var(--tip-soft);border-color:color-mix(in srgb,var(--hex-3) 35%,transparent)}.callout-tip .label{color:var(--ok)}.callout-warn{background:var(--warn-soft);border-color:color-mix(in srgb,var(--warn) 35%,transparent)}.callout-warn .label{color:var(--warn)}.quickfix{border:1px solid color-mix(in srgb,var(--accent) 35%,var(--border));background:linear-gradient(180deg,var(--accent-soft),transparent);border-radius:var(--radius-l);padding:22px 24px;margin:1.8rem 0 2.2rem}.quickfix h2{margin:0 0 12px;font-size:1.1rem;display:flex;align-items:center;gap:9px}.quickfix ol{margin:0;-webkit-padding-start:1.2em;padding-inline-start:1.2em}.quickfix li{font-size:.99rem}.symptoms{border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;background:var(--surface-2);margin:1.6rem 0}.symptoms h2{font-size:1rem;margin:0 0 10px}.symptoms ul{margin:0;padding:0;list-style:none;display:grid;grid-gap:8px;gap:8px}.symptoms li{display:flex;gap:10px;font-size:.97rem;color:var(--text-soft)}.symptoms li:before{content:"✓";color:var(--ok);font-weight:700;flex:none}.steps{list-style:none;counter-reset:step;margin:1.4rem 0;padding:0;grid-gap:14px}.steps,.steps li{display:grid;gap:14px}.steps li{counter-increment:step;grid-template-columns:30px 1fr;grid-gap:14px;align-items:start}.steps li:before{content:counter(step);grid-row:1;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-size:.85rem;font-weight:700;background:var(--accent-soft);color:var(--accent)}.steps li>span{padding-top:3px}.faq{display:grid;grid-gap:10px;gap:10px;margin-top:1.2rem}.faq details{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);overflow:hidden}.faq summary{cursor:pointer;list-style:none;padding:16px 20px;font-weight:640;font-size:1.01rem;display:flex;justify-content:space-between;gap:16px;align-items:center}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";font-size:1.35rem;color:var(--accent);font-weight:400;line-height:1;flex:none}.faq details[open] summary:after{content:"−"}.faq details[open] summary{border-bottom:1px solid var(--border)}.faq .answer{padding:14px 20px 18px;color:var(--text-soft);font-size:.99rem}.faq .answer p{margin:0}.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:.85rem;padding-block:16px 0}.crumbs,.crumbs a{color:var(--text-muted)}.crumbs a:hover{color:var(--accent);text-decoration:underline}.crumbs .sep{opacity:.5}[dir=rtl] .crumbs .sep{transform:scaleX(-1);display:inline-block}.crumbs [aria-current=page]{color:var(--text-soft)}.related{border-top:1px solid var(--border);margin-top:3rem;padding-top:2.4rem}.related h2{margin-bottom:4px}.related-grid{display:grid;grid-gap:14px;gap:14px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));margin-top:20px}.related-card{display:grid;grid-gap:8px;gap:8px;padding:18px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);transition:border-color .16s,transform .16s}.related-card:hover{border-color:var(--accent);transform:translateY(-2px)}.related-card strong{font-size:1rem;line-height:1.35}.related-card span{font-size:.88rem;color:var(--text-muted)}.search-box{display:flex;gap:10px;align-items:center;border:1px solid var(--border-strong);background:var(--surface);border-radius:999px;padding:6px 8px 6px 18px;box-shadow:var(--shadow-s)}[dir=rtl] .search-box{padding:6px 18px 6px 8px}.search-box input{flex:1 1;border:0;background:transparent;font:inherit;color:var(--text);padding:10px 0;outline:none;min-width:0}.search-results{display:grid;grid-gap:12px;gap:12px;margin-top:26px}.search-result{padding:18px 20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}.search-result:hover{border-color:var(--accent)}.search-result strong{display:block;font-size:1.03rem;margin-bottom:4px}.search-result p{margin:0;font-size:.93rem;color:var(--text-soft)}.author-box{display:flex;gap:18px;align-items:flex-start;border:1px solid var(--border);border-radius:var(--radius-l);background:var(--surface-2);padding:22px;margin-top:2.6rem}.author-avatar{width:58px;height:58px;border-radius:50%;flex:none;display:grid;place-items:center;color:#fff;font-weight:760;font-size:1.2rem;background:linear-gradient(135deg,var(--hex-1),var(--hex-2))}.author-box h2{font-size:1.05rem;margin:0 0 2px}.author-box .role{font-size:.84rem;color:var(--text-muted);margin-bottom:10px}.author-box p{margin:0;font-size:.95rem;color:var(--text-soft)}.site-footer{border-top:1px solid var(--border);background:var(--bg-soft);padding-block:48px 30px;margin-top:2rem}.footer-grid{display:grid;grid-gap:34px;gap:34px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}.footer-grid h3{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:12px}[dir=rtl] .footer-grid h3{letter-spacing:0;text-transform:none}.footer-grid ul{list-style:none;margin:0;padding:0;display:grid;grid-gap:8px;gap:8px}.footer-grid a{font-size:.93rem;color:var(--text-soft)}.footer-grid a:hover{color:var(--accent)}.footer-bottom{margin-top:34px;padding-top:22px;border-top:1px solid var(--border);display:grid;grid-gap:10px;gap:10px;font-size:.83rem;color:var(--text-muted)}.a-card{display:flex;flex-direction:column;border:1px solid var(--border);border-radius:var(--radius-l);background:var(--surface);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.a-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--accent)}.a-thumb{display:block;aspect-ratio:16/9;background:var(--bg-sunk);overflow:hidden}.a-thumb img{width:100%;height:100%;object-fit:cover;display:block}.a-body{display:grid;grid-gap:8px;gap:8px;padding:18px 20px 20px;align-content:start}.a-body strong{font-size:1rem;line-height:1.35}.a-excerpt{font-size:.89rem;color:var(--text-muted);line-height:1.55}.card-grid{display:grid;grid-gap:18px;gap:18px;grid-template-columns:repeat(auto-fill,minmax(min(100%,285px),1fr))}.article-hero{display:block;width:100%;max-width:var(--maxw-read);aspect-ratio:16/9;overflow:hidden;border:1px solid var(--border);border-radius:var(--radius-l);background:var(--bg-sunk);margin:0 0 1.8rem}.article-hero img{width:100%;height:100%;object-fit:cover;display:block}.search-result{display:grid;grid-template-columns:148px 1fr;grid-gap:18px;gap:18px;align-items:center;padding:14px}.search-thumb{width:148px;height:84px;object-fit:cover;border-radius:var(--radius-s);display:block}.search-text{display:grid;grid-gap:6px;gap:6px;align-content:center}@media (max-width:640px){.search-result{grid-template-columns:1fr}.search-thumb{width:100%;height:auto;aspect-ratio:16/9}}