@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");:root{color-scheme:dark;--bg:#111113;--surface:#18191b;--surface-strong:#1c1d20;--surface-soft:rgba(24,25,27,0.68);--text:#f4f4f5;--text-strong:#fafafa;--muted:#a1a1aa;--muted-2:#71717a;--line:rgba(255,255,255,0.11);--line-strong:rgba(255,255,255,0.2);--gold:#f5c94a;--gold-soft:rgba(245,201,74,0.13);--danger:#ff7b7b;--warning:#f2b84b;--header-height:68px;font-family:Inter,PingFang TC,PingFang SC,Noto Sans TC,Microsoft JhengHei,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}:root[data-contrast=high]{--text:#ffffff;--muted:#c5c5cb;--line:rgba(255,255,255,0.18);--line-strong:rgba(255,255,255,0.31)}*{box-sizing:border-box}html{scroll-behavior:smooth}body,html{background:var(--bg)}body{margin:0;min-width:320px;min-height:100vh;color:var(--text);-webkit-font-smoothing:antialiased}button,input{font:inherit}a,button{-webkit-tap-highlight-color:transparent}button{color:inherit}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--gold);outline-offset:3px}.app-shell{min-height:100vh;background:var(--bg)}.app-shell.is-home{position:relative;isolation:isolate}.app-shell.is-home:before{content:"";position:absolute;inset:var(--header-height) 0 0;z-index:0;pointer-events:none;background-image:url(/assets/help-center-icon-pattern.png);background-position:top;background-repeat:repeat-y;background-size:100% auto;opacity:.2}.app-shell.is-home>.home-shell{position:relative;z-index:1}.site-header{position:sticky;inset:0 0 auto;z-index:50;height:var(--header-height);border-bottom:1px solid var(--line);background:rgba(17,17,19,.86);backdrop-filter:blur(22px) saturate(125%)}.header-inner{width:100%;height:100%;padding:0 28px;display:flex;align-items:center;justify-content:space-between}.brand{display:inline-flex;align-items:center;gap:11px;border:0;background:transparent;padding:6px 0;cursor:pointer}.brand img{width:123px;height:auto;display:block}.brand-divider{width:1px;height:18px;background:var(--line-strong)}.brand-label{color:#c8c8ce;font-size:15px;font-weight:500;letter-spacing:.01em}.header-actions,.header-search,.icon-button{display:flex;align-items:center}.header-actions{gap:12px}.header-search{width:226px;height:40px;padding:0 10px 0 13px;gap:9px;border:1px solid var(--line);border-radius:11px;background:rgba(24,25,27,.68);color:var(--muted);cursor:pointer;transition:border-color .16s ease,background .16s ease}.header-search:hover{border-color:var(--line-strong);background:rgba(28,29,32,.9)}.header-search span{margin-right:auto;font-size:14px}kbd{display:inline-flex;align-items:center;min-width:24px;height:23px;padding:0 6px;border:1px solid var(--line);border-radius:6px;background:rgba(0,0,0,.18);font-family:Inter,sans-serif;font-size:11px;line-height:1;box-shadow:inset 0 -1px 0 rgba(255,255,255,.05)}.icon-button,kbd{justify-content:center;color:var(--muted)}.icon-button{width:38px;height:38px;border:1px solid transparent;border-radius:10px;background:transparent;cursor:pointer}.icon-button.is-active,.icon-button:hover{color:var(--text);border-color:var(--line);background:var(--surface-soft)}.mobile-nav-trigger{display:none}.home-shell{width:min(100% - 48px,1200px);margin:0 auto;padding:44px 0 30px}.home-hero{display:flex;flex-direction:column;align-items:center;text-align:center}.eyebrow{display:inline-flex;align-items:center;gap:9px;height:34px;padding:0 15px;border:1px solid var(--line);border-radius:999px;background:rgba(24,25,27,.52);color:#b6b6bd;font-size:11px;font-weight:600;letter-spacing:.24em}.eyebrow span{color:var(--gold)}.home-hero h1{margin:26px 0 14px;color:var(--text-strong);font-size:clamp(40px,4vw,56px);font-weight:650;line-height:1.12;letter-spacing:-.045em}.home-hero h1 span+span:before{content:" "}.home-hero>p{max-width:700px;margin:0;color:var(--muted);font-size:17px;line-height:1.8;letter-spacing:.01em}.hero-search{width:min(100%,704px);height:48px;margin-top:28px;padding:0 14px 0 18px;display:flex;align-items:center;gap:14px;border:1px solid var(--line-strong);border-radius:14px;background:rgba(24,25,27,.7);color:var(--muted);backdrop-filter:blur(18px);box-shadow:0 20px 60px rgba(0,0,0,.2),inset 0 1px 0 rgba(255,255,255,.035);cursor:text;transition:border-color .16s ease,transform .16s ease,background .16s ease}.hero-search:hover{transform:translateY(-1px);border-color:rgba(245,201,74,.35);background:rgba(28,29,32,.82)}.hero-search svg{color:var(--gold)}.hero-search span{margin-right:auto;font-size:15px}.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px 20px;margin-top:42px}.category-card{position:relative;min-height:168px;padding:22px 24px 20px;display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:44px auto;align-items:start;gap:20px 18px;overflow:hidden;text-align:left;border:1px solid rgba(255,255,255,.17);border-radius:16px;background:linear-gradient(135deg,rgba(255,255,255,.075),rgba(255,255,255,.018) 38%,transparent 68%),rgba(24,25,27,.1);-webkit-backdrop-filter:blur(24px) saturate(150%);backdrop-filter:blur(24px) saturate(150%);box-shadow:0 22px 58px rgba(0,0,0,.28),inset 0 1px 0 rgba(255,255,255,.14),inset 1px 0 0 rgba(255,255,255,.045),inset 0 -1px 0 rgba(255,255,255,.025);cursor:pointer;transition:transform .18s ease,border-color .18s ease,background .18s ease,box-shadow .18s ease}.category-card:before{inset:1px;border-radius:15px;background:rgba(255,255,255,.012);box-shadow:inset 0 34px 90px rgba(255,255,255,.038)}.category-card:after,.category-card:before{content:"";position:absolute;pointer-events:none}.category-card:after{inset:0 auto auto 0;width:100%;height:1px;background:rgba(255,255,255,.17)}.category-card:hover{transform:translateY(-3px);border-color:rgba(255,255,255,.3);background:linear-gradient(135deg,rgba(255,255,255,.095),rgba(255,255,255,.024) 40%,transparent 70%),rgba(29,30,34,.18);box-shadow:0 28px 70px rgba(0,0,0,.34),inset 0 1px 0 rgba(255,255,255,.19),inset 1px 0 0 rgba(255,255,255,.065)}.category-card.is-featured{border-color:rgba(255,255,255,.29);box-shadow:0 24px 64px rgba(0,0,0,.31),inset 0 1px 0 rgba(255,255,255,.2),inset 1px 0 0 rgba(255,255,255,.07),inset 0 -1px 0 rgba(255,255,255,.03)}.category-icon{position:relative;z-index:1;width:44px;height:44px;display:grid;place-items:center;grid-column:1;grid-row:1;border:1px solid rgba(255,255,255,.18);border-radius:10px;background:rgba(24,25,27,.38);color:#e2e2e7;box-shadow:inset 0 1px 0 rgba(255,255,255,.1)}.category-copy{position:relative;z-index:1;align-self:end;display:flex;flex-direction:column;gap:8px;grid-column:1;grid-row:2;padding:0}.category-copy strong{color:var(--text-strong);font-size:20px;font-weight:600;line-height:1.35;letter-spacing:-.015em}.category-copy span{color:var(--muted);font-size:14px;line-height:1.55}.category-arrow{position:relative;z-index:1;align-self:end;grid-column:2;grid-row:2;color:#c4c4ca;transition:transform .18s ease,color .18s ease}.category-card:hover .category-arrow{transform:translateX(4px);color:var(--gold)}.home-quick-start{margin-top:56px;padding:30px 0 6px;border-top:1px solid var(--line)}.home-section-heading{max-width:660px;margin-bottom:22px}.home-section-heading>span{display:block;margin-bottom:8px;color:var(--gold);font-size:9px;font-weight:650;letter-spacing:.22em}.home-section-heading h2{margin:0;color:var(--text-strong);font-size:27px;font-weight:630;line-height:1.3;letter-spacing:-.025em}.home-section-heading p{margin:9px 0 0;color:var(--muted);font-size:14px;line-height:1.75}.quick-start-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.quick-start-step{position:relative;min-height:176px;padding:20px;display:flex;flex-direction:column;align-items:flex-start;border:1px solid var(--line);border-radius:14px;background:rgba(24,25,27,.62);text-align:left;cursor:pointer;transition:border-color .18s ease,background .18s ease,transform .18s ease}.quick-start-step:hover{transform:translateY(-2px);border-color:rgba(245,201,74,.28);background:rgba(28,29,32,.8)}.quick-start-index{position:absolute;top:18px;right:18px;color:#66666e;font-size:10px;font-weight:650;letter-spacing:.08em}.quick-start-icon{width:36px;height:36px;display:grid;place-items:center;margin-bottom:18px;border:1px solid rgba(245,201,74,.24);border-radius:9px;background:var(--gold-soft);color:var(--gold)}.quick-start-step strong{color:#e9e9ed;font-size:14px;font-weight:610;line-height:1.45}.quick-start-step>span:nth-of-type(3){margin-top:7px;padding-right:18px;color:#85858e;font-size:12px;line-height:1.65}.quick-start-step>svg{position:absolute;right:18px;bottom:18px;color:#777780}.principle-note{margin-top:20px;padding:22px 28px;display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;border:1px solid var(--line);border-radius:14px;background:rgba(24,25,27,.46)}.note-icon{width:36px;height:36px;display:grid;place-items:center;border:1px solid rgba(245,201,74,.42);border-radius:999px;color:var(--gold)}.principle-note strong{display:block;margin:1px 0 6px;color:#dedee3;font-size:14px;font-weight:600}.principle-note p{margin:0;color:var(--muted);font-size:13px;line-height:1.75}.docs-layout{min-height:calc(100vh - var(--header-height));display:grid;grid-template-columns:260px minmax(0,1fr) 222px}.docs-sidebar{position:sticky;top:var(--header-height);height:calc(100vh - var(--header-height));padding:24px 18px;overflow-y:auto;border-right:1px solid var(--line);background:rgba(17,17,19,.74)}.sidebar-mobile-head{display:none}.sidebar-home,.sidebar-items button{width:100%;border:0;background:transparent;cursor:pointer}.sidebar-home{height:42px;padding:0 12px;display:flex;align-items:center;gap:10px;border-radius:9px;color:var(--muted);font-size:14px;font-weight:500}.sidebar-home.is-active,.sidebar-home:hover{background:var(--surface);color:var(--text)}.sidebar-groups{display:flex;flex-direction:column;gap:6px;margin-top:20px}.sidebar-group-toggle{width:100%;min-height:38px;padding:8px 11px;display:flex;align-items:center;gap:9px;border:0;border-radius:8px;background:transparent;color:#84848d;font-family:inherit;font-size:14px;font-weight:600;letter-spacing:.015em;text-align:left;cursor:pointer;transition:color .18s ease,background .22s ease,box-shadow .22s ease,transform .22s cubic-bezier(.22,1,.36,1)}.sidebar-group-toggle.is-current,.sidebar-group-toggle:hover{color:#cfcfd5}.sidebar-group-toggle:hover{background:rgba(255,255,255,.025)}.sidebar-group-status{flex:0 0 auto;margin-left:-4px;color:#686871;font-size:12px;font-weight:500;letter-spacing:0;white-space:nowrap}.sidebar-group.is-expanded .sidebar-group-toggle{background:rgba(255,255,255,.035);color:#d8d8de;box-shadow:inset 0 1px 0 rgba(255,255,255,.035)}.sidebar-group-caret{margin-left:auto;flex:0 0 auto;color:#686871;transform-origin:center;transition:transform .3s cubic-bezier(.22,1,.36,1),color .18s ease}.sidebar-group.is-expanded .sidebar-group-caret{transform:rotate(90deg);color:#a5a5ad}.sidebar-items-collapse{display:grid;grid-template-rows:0fr;opacity:0;transform:translateY(-6px);pointer-events:none;transition:grid-template-rows .3s cubic-bezier(.22,1,.36,1),opacity .18s ease,transform .26s cubic-bezier(.22,1,.36,1)}.sidebar-group.is-expanded .sidebar-items-collapse{grid-template-rows:1fr;opacity:1;transform:translateY(0);pointer-events:auto}.sidebar-items-clip{min-height:0;overflow:hidden}.sidebar-items{display:flex;flex-direction:column;gap:1px;padding:2px 0 5px}.sidebar-items button{position:relative;min-height:34px;padding:7px 12px 7px 37px;display:flex;align-items:center;border-radius:8px;color:#85858e;text-align:left;font-size:13px;line-height:1.45;opacity:0;transform:translateY(-5px);transition:color .16s ease,background .18s ease,opacity .18s ease,transform .28s cubic-bezier(.22,1,.36,1)}.sidebar-group.is-expanded .sidebar-items button{opacity:1;transform:translateY(0);transition-delay:calc(32ms + var(--sidebar-item-index) * 24ms)}.sidebar-items button:hover{color:#d4d4da;background:rgba(255,255,255,.025)}.sidebar-items button.is-active{color:var(--text);background:var(--surface)}.active-rail{position:absolute;left:16px;width:3px;height:16px;border-radius:4px;background:var(--gold);box-shadow:0 0 14px rgba(245,201,74,.28)}.sidebar-source{margin-top:24px;padding:15px;display:flex;gap:10px;border:1px solid var(--line);border-radius:10px;color:#777780;font-size:11px;line-height:1.6}.sidebar-source svg{flex:0 0 auto;margin-top:1px}.article-main{min-width:0;padding:58px 64px 96px}.article{width:min(100%,760px);margin:0 auto}.article-breadcrumb{display:flex;align-items:center;gap:7px;color:#6f6f78;font-size:12px}.article-breadcrumb button{padding:0;border:0;background:transparent;color:#92929b;cursor:pointer}.article-breadcrumb button:hover{color:var(--text)}.article-header{padding-top:34px}.article-kicker{margin-bottom:14px;color:var(--gold);font-size:10px;font-weight:650;letter-spacing:.22em}.article-header h1,.missing-article h1{margin:0;color:var(--text-strong);font-size:38px;font-weight:650;line-height:1.18;letter-spacing:-.04em}.article-header>p{max-width:680px;margin:19px 0 0;color:var(--muted);font-size:17px;line-height:1.85}.article-divider{height:1px;margin:34px 0 4px;background:var(--line)}.article-content{color:#c9c9cf;font-size:16px;line-height:1.9;letter-spacing:.006em}.article-content>p:first-child{color:#d6d6db;font-size:17px;line-height:1.9}.article-content h2{scroll-margin-top:98px;margin:44px 0 16px;padding-top:2px;color:var(--text-strong);font-size:24px;font-weight:620;line-height:1.35;letter-spacing:-.025em}.article-content h3{scroll-margin-top:98px;margin:40px 0 13px;color:#eeeef1;font-size:20px;font-weight:600;line-height:1.45;letter-spacing:-.012em}.article-content p{margin:0 0 19px}.article-content strong{color:#ebebef;font-weight:600}.article-content a{color:#e7cf86;text-decoration:none;border-bottom:1px solid rgba(231,207,134,.3)}.article-content a:hover{color:#ffe08a;border-color:currentColor}.article-content ol,.article-content ul{margin:16px 0 24px;padding-left:1.4em}.article-content li{margin:8px 0;padding-left:5px}.article-content li::marker{color:#8f8f98}.article-content hr{height:1px;margin:42px 0;border:0;background:var(--line)}.article-content blockquote{margin:28px 0;padding:4px 0 4px 20px;border-left:2px solid var(--line-strong);color:var(--muted)}.article-content code{padding:2px 6px;border:1px solid var(--line);border-radius:5px;background:var(--surface);color:#e1d19e;font-family:SFMono-Regular,Consolas,monospace;font-size:.88em}.article-content pre{margin:24px 0;padding:20px;overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:#0d0d0f}.article-content pre code{padding:0;border:0;background:transparent}.table-scroll{width:100%;margin:25px 0 36px;overflow-x:auto;border:1px solid var(--line);border-radius:13px;background:rgba(24,25,27,.58)}.article-content table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.55}.article-content td,.article-content th{padding:14px 17px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.article-content th{background:rgba(255,255,255,.025);color:#e7e7eb;font-size:12px;font-weight:600;letter-spacing:.035em}.article-content td{color:#b5b5bd}.article-content tr:last-child td{border-bottom:0}.callout{margin:30px 0;padding:20px 21px;display:grid;grid-template-columns:auto 1fr;gap:14px;border:1px solid var(--line);border-radius:13px;background:rgba(24,25,27,.7)}.callout-icon{width:30px;height:30px;display:grid;place-items:center;border-radius:8px;background:rgba(255,255,255,.035);color:#9fc5ff}.callout-warn{border-color:rgba(242,184,75,.26)}.callout-warn .callout-icon{color:var(--warning);background:rgba(242,184,75,.08)}.callout-error{border-color:rgba(255,123,123,.27)}.callout-error .callout-icon{color:var(--danger);background:rgba(255,123,123,.08)}.callout-body>strong{display:block;margin:2px 0 7px;color:#ededf0;font-size:14px}.callout-body p:last-child{margin-bottom:0}.callout-body p{color:#adadb5;font-size:14px;line-height:1.75}.defense-chain{margin:30px 0 50px;overflow:hidden;border:1px solid rgba(255,255,255,.12);border-radius:14px;background:linear-gradient(135deg,rgba(255,255,255,.045),transparent 40%),rgba(24,25,27,.68);box-shadow:inset 0 1px 0 rgba(255,255,255,.055)}.defense-chain-head{min-height:74px;padding:17px 20px;display:flex;align-items:center;gap:13px;border-bottom:1px solid var(--line)}.defense-chain-head>span{width:38px;height:38px;display:grid;place-items:center;flex:0 0 auto;border:1px solid rgba(245,201,74,.22);border-radius:10px;background:var(--gold-soft);color:var(--gold)}.defense-chain-head div{display:flex;flex-direction:column;gap:4px}.defense-chain-head strong{color:#efeff2;font-size:14px;font-weight:620}.defense-chain-head small{color:#85858e;font-size:12px;line-height:1.5}.defense-chain-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line)}.defense-node{position:relative;min-height:128px;padding:18px;display:flex;flex-direction:column;align-items:flex-start;background:rgba(20,20,23,.92)}.defense-index{position:absolute;top:16px;right:16px;color:#5e5e67;font-size:9px;font-weight:650;letter-spacing:.08em}.defense-icon{width:31px;height:31px;margin-bottom:14px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.1);border-radius:8px;color:#d7c681;background:rgba(255,255,255,.025)}.defense-node strong{color:#dedee3;font-size:13px;font-weight:600;line-height:1.4}.defense-node small{margin-top:5px;color:#777780;font-size:11px;line-height:1.5}.related-cards{margin:24px 0 42px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.two-factor-overview{position:relative;margin:8px 0 36px;overflow:hidden;border:1px solid var(--line);border-radius:16px;background:radial-gradient(circle at 84% -12%,rgba(245,201,74,.13),transparent 37%),rgba(20,21,23,.72)}.two-factor-overview:after{content:"";position:absolute;top:0;left:0;width:96px;height:2px;background:var(--gold)}.two-factor-overview-head{padding:24px 26px 23px;display:grid;grid-template-columns:150px minmax(0,1fr);gap:28px;align-items:start}.two-factor-overview-head>span{padding-top:5px;color:var(--gold);font-size:10px;font-weight:700;line-height:1.4;letter-spacing:.16em}.article-content .two-factor-overview-head h2{margin:0 0 8px;padding:0;border:0;color:#ededf0;font-size:24px;line-height:1.25}.article-content .two-factor-overview-head p{margin:0;color:#8d8d96;font-size:13px;line-height:1.65}.two-factor-overview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;border-top:1px solid var(--line);background:var(--line)}.two-factor-overview-item{min-height:132px;padding:20px;display:flex;gap:14px;background:rgba(16,17,19,.94)}.two-factor-overview-icon{width:38px;height:38px;flex:0 0 auto;display:grid;place-items:center;border:1px solid rgba(245,201,74,.25);border-radius:10px;background:rgba(245,201,74,.07);color:var(--gold)}.two-factor-overview-item strong{display:block;color:#dedee3;font-size:13px;font-weight:600;line-height:1.5}.article-content .two-factor-overview-item p{margin:6px 0 0;color:#777780;font-size:11px;line-height:1.65}.article-content .related-card{min-height:82px;padding:15px 16px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;background:rgba(24,25,27,.56);color:inherit;text-decoration:none;transition:transform .16s ease,border-color .16s ease,background .16s ease}.article-content .related-card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.19);background:rgba(30,31,35,.72)}.related-card-icon{width:34px;height:34px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.1);border-radius:9px;color:#b6b6bf;background:rgba(255,255,255,.025)}.related-card>span:nth-child(2){min-width:0;display:flex;flex-direction:column;gap:5px}.related-card strong{color:#dedee3;font-size:13px;font-weight:600;line-height:1.45}.related-card small{color:#74747d;font-size:11px}.related-card>svg{color:#777780;transition:transform .16s ease,color .16s ease}.article-content .related-card:hover>svg{transform:translateX(3px);color:var(--gold)}.steps{position:relative;margin:27px 0 42px;overflow:hidden;border:1px solid var(--line);border-radius:14px;background:rgba(24,25,27,.48)}.steps-wide{width:min(960px,calc(100vw - 580px))}.step{position:relative;padding:25px 25px 23px 74px;border-bottom:1px solid var(--line)}.step:last-child{border-bottom:0}.step-number{position:absolute;top:27px;left:23px;width:32px;height:32px;display:grid;place-items:center;border:1px solid rgba(245,201,74,.45);border-radius:10px;background:var(--gold-soft);color:var(--gold);font-size:10px;font-weight:650;letter-spacing:.04em}.step-content h3{margin:0 0 8px;font-size:18px}.step-content p:last-child,.step-content ul:last-child{margin-bottom:0}.step-with-media{min-height:270px;padding-right:286px}.step-media{position:absolute;top:24px;right:24px;bottom:24px;width:236px;margin:0;padding:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.12);border-radius:12px;background:rgba(10,10,11,.72);box-shadow:0 18px 42px rgba(0,0,0,.24)}.step-media-trigger{position:relative;width:100%;min-height:0;flex:1;padding:0;display:grid;place-items:center;overflow:hidden;border:0;border-radius:8px;background:#0b0b0d;cursor:zoom-in}.step-media-trigger img{width:auto;max-width:100%;max-height:100%;display:block;border-radius:8px;object-fit:contain;transition:transform .18s ease}.step-media-trigger:focus-visible img,.step-media-trigger:hover img{transform:scale(1.015)}.step-media-action{position:absolute;right:7px;bottom:7px;padding:5px 7px;display:inline-flex;align-items:center;gap:4px;border:1px solid rgba(255,255,255,.16);border-radius:7px;background:rgba(8,8,9,.84);color:#d7d7dc;font-size:10px;line-height:1;box-shadow:0 5px 18px rgba(0,0,0,.32)}.step-media figcaption{margin-top:8px;color:#8f8f98;font-size:10px;line-height:1.55;text-align:center}.image-preview-overlay{position:fixed;inset:0;z-index:200;width:100vw;height:100dvh;max-width:none;max-height:none;margin:0;padding:32px;display:none;place-items:center;overflow:hidden;border:0;background:rgba(4,4,5,.88);backdrop-filter:blur(14px)}.image-preview-overlay:popover-open{display:grid;animation:overlay-in .16s ease both}.image-preview-overlay::backdrop{background:transparent}.image-preview-overlay>img{max-width:min(92vw,980px);max-height:88vh;display:block;object-fit:contain;border:1px solid rgba(255,255,255,.16);border-radius:14px;background:#0b0b0d;box-shadow:0 28px 80px rgba(0,0,0,.55);animation:dialog-in .18s ease both}.image-preview-close{position:absolute;top:20px;right:20px;z-index:1;width:42px;height:42px;padding:0;display:grid;place-items:center;border:1px solid rgba(255,255,255,.16);border-radius:10px;background:rgba(24,25,27,.92);color:#e4e4e8;cursor:pointer;transition:border-color .16s ease,background .16s ease}.image-preview-close:focus-visible,.image-preview-close:hover{border-color:rgba(245,201,74,.58);background:rgba(43,40,30,.96)}.article-footer{margin-top:76px;padding:22px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.article-footer div{display:flex;flex-direction:column;gap:5px}.article-footer strong{color:#e2e2e7;font-size:13px;font-weight:600}.article-footer span{color:#787881;font-size:12px}.article-footer button,.primary-button{min-height:38px;padding:0 13px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:#d8d8dd;font-size:12px;cursor:pointer}.article-footer button:hover,.primary-button:hover{border-color:var(--line-strong);color:var(--text)}.toc{position:sticky;top:var(--header-height);align-self:start;height:calc(100vh - var(--header-height));padding:54px 30px 30px 0;overflow-y:auto}.toc-label{display:flex;align-items:center;gap:7px;margin-bottom:15px;color:#8a8a93;font-size:10px;font-weight:650;letter-spacing:.08em}.toc nav{display:flex;flex-direction:column;border-left:1px solid var(--line)}.toc a{position:relative;padding:7px 0 7px 16px;color:#73737c;text-decoration:none;font-size:12px;line-height:1.5;transition:color .15s ease}.toc a:before{content:"";position:absolute;top:7px;bottom:7px;left:-1px;width:2px;border-radius:2px;background:transparent}.toc a.is-active,.toc a:hover{color:#d1d1d6}.toc a.is-active:before{background:var(--gold)}.toc a.is-child{padding-left:27px;font-size:11px}.missing-article{padding-top:42px}.missing-icon{width:60px;height:60px;margin:64px 0 24px;display:grid;place-items:center;border:1px solid var(--line);border-radius:14px;background:var(--surface-soft);color:var(--muted)}.missing-article p{margin:16px 0 28px;color:var(--muted);font-size:17px}.drawer-backdrop{display:none}.search-overlay{position:fixed;inset:0;z-index:100;display:grid;place-items:start center;padding:14vh 20px 30px;background:rgba(5,5,6,.72);backdrop-filter:blur(8px);animation:overlay-in .15s ease both}.search-dialog{width:min(100%,650px);overflow:hidden;border:1px solid var(--line-strong);border-radius:16px;background:#171719;box-shadow:0 34px 100px rgba(0,0,0,.62),inset 0 1px 0 rgba(255,255,255,.05);animation:dialog-in .18s ease both}.search-input-wrap{height:68px;padding:0 17px 0 21px;display:flex;align-items:center;gap:13px;border-bottom:1px solid var(--line);color:var(--gold)}.search-input-wrap input{min-width:0;flex:1;border:0;outline:0;background:transparent;color:var(--text);font-size:16px}.search-input-wrap input::placeholder{color:#71717a}.search-input-wrap button{width:32px;height:32px;display:grid;place-items:center;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--muted);cursor:pointer}.search-results{max-height:440px;padding:11px;overflow-y:auto}.search-results-label{padding:8px 10px 10px;color:#6f6f78;font-size:10px;font-weight:650;letter-spacing:.11em}.search-results>button{width:100%;min-height:69px;padding:11px 12px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;border:1px solid transparent;border-radius:10px;background:transparent;text-align:left;cursor:pointer}.search-results>button:hover{border-color:var(--line);background:rgba(255,255,255,.03)}.result-icon{width:35px;height:35px;display:grid;place-items:center;border:1px solid var(--line);border-radius:9px;color:var(--muted)}.search-results>button>span:nth-child(2){min-width:0;display:flex;flex-direction:column;gap:5px}.search-results strong{color:#e6e6e9;font-size:13px;font-weight:600}.search-results small{overflow:hidden;color:#808089;font-size:11px;text-overflow:ellipsis;white-space:nowrap}.search-results>button>svg{color:#6f6f78}.empty-results{padding:64px 20px;color:var(--muted);text-align:center;font-size:13px}.search-footer{min-height:43px;padding:0 15px;display:flex;align-items:center;justify-content:flex-end;gap:16px;border-top:1px solid var(--line);color:#6f6f78;font-size:10px}.search-footer span{display:flex;align-items:center;gap:4px}@keyframes overlay-in{0%{opacity:0}to{opacity:1}}@keyframes dialog-in{0%{opacity:0;transform:translateY(-10px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}@media (max-width:1180px){.docs-layout{grid-template-columns:248px minmax(0,1fr)}.toc{display:none}.article-main{padding-inline:52px}.steps-wide{width:100%}}@media (max-width:940px){.category-grid,.quick-start-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.docs-layout{display:block}.mobile-nav-trigger{display:flex}.brand{margin-right:auto;margin-left:10px}.docs-sidebar{position:fixed;top:0;left:0;z-index:90;width:min(84vw,300px);height:100dvh;padding-top:17px;transform:translateX(-102%);transition:transform .22s ease;background:#151517}.docs-sidebar.is-open{transform:translateX(0)}.sidebar-mobile-head{height:42px;margin-bottom:17px;padding:0 7px 0 11px;display:flex;align-items:center;justify-content:space-between;color:var(--text);font-size:13px;font-weight:600}.drawer-backdrop{position:fixed;inset:0;z-index:80;display:block;border:0;background:rgba(0,0,0,.62);backdrop-filter:blur(4px)}.article-main{padding:48px 32px 80px}}@media (max-width:680px){:root{--header-height:60px}.header-inner{padding:0 15px}.brand img{width:107px}.brand-divider,.brand-label,.header-search kbd,.header-search span{display:none}.header-search{width:38px;height:38px;justify-content:center;padding:0;border-color:transparent;background:transparent}.header-actions{gap:2px}.home-shell{width:min(100% - 32px,1200px);padding-top:34px}.app-shell.is-home:before{background-position:22% top;background-size:auto 720px}.eyebrow{height:30px;padding-inline:12px;font-size:9px}.home-hero h1{margin-top:22px;font-size:35px;letter-spacing:-.04em}.home-hero h1 span{display:block}.home-hero h1 span+span:before{content:""}.home-hero>p{font-size:15px;line-height:1.75}.hero-search{height:48px;margin-top:24px;padding-inline:16px}.hero-search kbd{display:none}.category-grid{grid-template-columns:1fr;gap:14px;margin-top:28px}.category-card{min-height:150px;padding:20px;gap:18px 14px}.category-icon{width:44px;height:44px}.category-copy{padding:0}.category-copy strong{font-size:18px}.home-quick-start{margin-top:42px;padding-top:26px}.home-section-heading h2{font-size:24px}.quick-start-grid{grid-template-columns:1fr;gap:10px}.quick-start-step{min-height:142px}.principle-note{padding:20px}.article-main{padding:36px 20px 70px}.article-header{padding-top:27px}.article-header h1,.missing-article h1{font-size:38px;line-height:1.24}.article-header>p{margin-top:15px;font-size:15px;line-height:1.75}.article-divider{margin-top:30px}.article-content{font-size:15px;line-height:1.85}.article-content>p:first-child{font-size:16px}.article-content h2{margin-top:38px;font-size:24px}.article-content h3{margin-top:34px;font-size:19px}.defense-chain-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.defense-node{min-height:116px;padding:16px}.related-cards{grid-template-columns:1fr}.two-factor-overview{margin-bottom:30px}.two-factor-overview-head{padding:21px 19px 20px;grid-template-columns:1fr;gap:10px}.two-factor-overview-head>span{padding-top:0}.article-content .two-factor-overview-head h2{font-size:21px}.two-factor-overview-grid{grid-template-columns:1fr}.two-factor-overview-item{min-height:0;padding:17px 19px}.step{padding:22px 19px 21px 61px}.step-number{left:17px;top:23px}.step-with-media{min-height:0;padding-right:19px}.step-media{position:static;width:100%;height:min(320px,86vw);margin:18px 0 0;padding:10px}.image-preview-overlay{padding:18px}.image-preview-overlay>img{max-width:94vw;max-height:84vh}.image-preview-close{top:14px;right:14px}.callout{padding:18px}.article-footer{align-items:flex-start;flex-direction:column}.search-overlay{padding:8vh 12px 20px}}@media (prefers-reduced-motion:reduce){*,:after,:before{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.article-screenshot{margin:28px 0 36px;display:flex;flex-direction:column;align-items:center}.article-screenshot img{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:12px;box-shadow:0 18px 42px rgba(0,0,0,.24)}.article-screenshot-polished img{border-color:rgba(255,214,64,.2);background:#111214;box-shadow:0 24px 56px rgba(0,0,0,.34),0 0 0 6px rgba(255,255,255,.025)}.article-screenshot figcaption{margin-top:10px;color:var(--muted-2);font-size:12px;line-height:1.6;text-align:center}.dsl-hero{position:relative;margin:28px 0 42px;padding:30px;overflow:hidden;border:1px solid rgba(245,201,74,.22);border-radius:18px;background:radial-gradient(circle at 92% 8%,rgba(245,201,74,.13),transparent 34%),linear-gradient(145deg,rgba(245,201,74,.07),rgba(23,24,26,.92) 50%),#151517;box-shadow:inset 0 1px 0 rgba(255,255,255,.05),0 22px 56px rgba(0,0,0,.18)}.dsl-hero:after{position:absolute;top:0;right:0;width:42%;height:3px;border-radius:0 18px 0 4px;background:linear-gradient(90deg,transparent,var(--gold));content:""}.dsl-group-en,.dsl-hero-kicker{color:var(--gold);font-size:10px;font-weight:700;letter-spacing:.16em}.article-content .dsl-hero-copy h2{margin:12px 0 13px;padding:0;font-size:27px;letter-spacing:-.035em}.article-content .dsl-hero-copy p{max-width:650px;margin:0;color:#b7b7bf;font-size:15px;line-height:1.85}.dsl-hero-tags{margin-top:24px;display:flex;flex-wrap:wrap;gap:8px}.dsl-hero-tags span{padding:6px 10px;border:1px solid rgba(245,201,74,.16);border-radius:999px;background:rgba(245,201,74,.055);color:#d8c786;font-size:10px;font-weight:600;letter-spacing:.04em}.dsl-flow{margin:25px 0 34px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));overflow:hidden;border:1px solid var(--line);border-radius:14px;background:rgba(24,25,27,.55)}.dsl-flow-step{position:relative;min-height:132px;padding:21px 19px;display:flex;flex-direction:column;gap:18px;border-right:1px solid var(--line)}.dsl-flow-step:last-child{border-right:0}.dsl-flow-index{width:30px;height:30px;display:grid;place-items:center;border:1px solid rgba(245,201,74,.3);border-radius:9px;color:var(--gold);font-size:9px;font-weight:700}.dsl-flow-step strong{display:block;margin-bottom:7px;color:#e7e7eb;font-size:13px}.article-content .dsl-flow-copy p{margin:0;color:#85858e;font-size:11px;line-height:1.7}.dsl-capability-grid{margin:24px 0 36px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.dsl-capability-card{min-height:132px;padding:21px;display:flex;align-items:flex-start;gap:16px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(145deg,rgba(245,201,74,.035),transparent 52%),rgba(22,23,25,.72);box-shadow:inset 0 1px 0 rgba(255,255,255,.025)}.dsl-capability-index{width:34px;height:34px;flex:0 0 auto;display:grid;place-items:center;border:1px solid rgba(245,201,74,.28);border-radius:10px;background:rgba(245,201,74,.06);color:var(--gold);font-size:10px;font-weight:700}.article-content .dsl-capability-card h3{margin:1px 0 9px;color:#e9e9ec;font-size:15px;font-weight:650}.article-content .dsl-capability-copy p{margin:0;color:#909099;font-size:12px;line-height:1.75}.dsl-rule-group{margin:58px 0 68px}.dsl-rule-group-head{position:relative;margin-bottom:20px;padding:3px 0 4px 58px}.dsl-group-code{position:absolute;top:2px;left:0;width:40px;height:40px;display:grid;place-items:center;border:1px solid rgba(245,201,74,.28);border-radius:12px;background:rgba(245,201,74,.065);color:var(--gold);font-size:11px;font-weight:700;box-shadow:inset 0 1px 0 rgba(255,255,255,.035)}.article-content .dsl-rule-group-head h2{margin:3px 0 7px;padding:0;color:#f1f1f3;font-size:24px}.article-content .dsl-rule-group-head p{margin:0;color:#8f8f98;font-size:13px;line-height:1.7}.dsl-rule-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.dsl-rule-grid>.dsl-rule-card:last-child:nth-child(odd){grid-column:1/-1;min-height:168px}.dsl-rule-card{min-height:198px;padding:20px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(145deg,rgba(255,255,255,.025),transparent 45%),rgba(22,23,25,.75);box-shadow:inset 0 1px 0 rgba(255,255,255,.025);transition:border-color .18s ease,transform .22s cubic-bezier(.22,1,.36,1),background .18s ease}.dsl-rule-card:hover{border-color:rgba(245,201,74,.2);background:linear-gradient(145deg,rgba(245,201,74,.04),transparent 45%),rgba(23,24,26,.92);transform:translateY(-2px)}.dsl-rule-card-head{display:flex;align-items:center;gap:10px;color:#777780;font-size:9px;font-weight:700;letter-spacing:.12em}.dsl-rule-card-head i{height:1px;flex:1;background:linear-gradient(90deg,var(--line),transparent)}.article-content .dsl-rule-card h3{margin:23px 0 10px;color:#e7e7eb;font-size:16px;font-weight:610;line-height:1.45}.article-content .dsl-rule-copy p{margin:0;color:#909099;font-size:12px;line-height:1.8}@media (max-width:680px){.dsl-hero{margin-top:24px;padding:24px 21px;border-radius:15px}.article-content .dsl-hero-copy h2{font-size:24px}.dsl-flow{grid-template-columns:1fr}.dsl-flow-step{min-height:0;padding:18px;flex-direction:row;align-items:flex-start;gap:14px;border-right:0;border-bottom:1px solid var(--line)}.dsl-flow-step:last-child{border-bottom:0}.dsl-flow-index{flex:0 0 auto}.dsl-capability-grid{grid-template-columns:1fr}.dsl-capability-card{min-height:0;padding:18px}.dsl-rule-group{margin:48px 0 56px}.dsl-rule-group-head{padding-left:52px}.dsl-group-code{width:36px;height:36px}.article-content .dsl-rule-group-head h2{font-size:22px}.dsl-rule-grid{grid-template-columns:1fr}.dsl-rule-grid>.dsl-rule-card:last-child:nth-child(odd){grid-column:auto;min-height:0}.dsl-rule-card{min-height:0;padding:19px}.article-content .dsl-rule-card h3{margin-top:19px}}