:root{--lt-board:#eef0f4;--lt-post:#ffffff;--lt-side:#f7f8fb;--lt-indigo:#3a46a5;--lt-indigo-soft:#e7e9f7;--lt-green:#276b43;--lt-green-soft:#e5f3ea;--lt-ink:#1f2333;--lt-mute:#5b6070;--lt-line:#d9dce5;--lt-font:"PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif}body{margin:0;color:var(--lt-ink);background:var(--lt-board);font:16px/1.75 var(--lt-font)}a{color:var(--lt-indigo)}:focus-visible{outline:3px solid var(--lt-indigo);outline-offset:2px}.lt-kicker{color:var(--lt-indigo);font-size:14px;font-weight:700;letter-spacing:.08em}.lt-sub{margin-bottom:12px;color:var(--lt-mute)}.lt-small{margin-top:12px;color:var(--lt-mute);font-size:14px}.lt-empty{padding:14px 16px;color:var(--lt-mute);background:var(--lt-side);border-radius:8px}.lt-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.lt-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border:1.5px solid transparent;border-radius:8px;font-size:16px;font-weight:700;text-decoration:none;white-space:nowrap}.lt-btn-sm{min-height:44px;padding:0 16px;font-size:15px}.lt-btn-indigo{color:#fff;background:var(--lt-indigo)}.lt-btn-indigo:hover{background:#2f3a8d}.lt-btn-green{color:#fff;background:var(--lt-green)}.lt-btn-green:hover{background:#246640}.lt-btn-line{color:var(--lt-indigo);background:var(--lt-post);border-color:var(--lt-indigo)}.lt-btn-line:hover{background:var(--lt-indigo-soft)}.lt-more{display:inline-flex;align-items:center;gap:6px;min-height:44px;margin-top:10px;font-weight:700}.lt-more::after{content:"»"}.lt-wrap{max-width:1080px;margin-right:auto;margin-left:auto;padding-right:24px;padding-left:24px}.lt-bar{background:var(--lt-post);border-bottom:1px solid var(--lt-line);box-shadow:0 2px 0 var(--lt-indigo-soft)}.lt-bar-in{position:relative;display:flex;align-items:center;gap:20px;max-width:1080px;min-height:66px;margin:0 auto;padding:0 24px}.lt-site{display:inline-flex;align-items:center;gap:12px;min-height:44px;color:var(--lt-ink);font-size:18px;font-weight:800;text-decoration:none}.lt-badge{display:inline-grid;place-items:center;width:34px;height:34px;color:#fff;background:var(--lt-indigo);border-radius:10px;font-size:15px;font-weight:700}.lt-tabs{display:flex;flex:1;gap:2px}.lt-tab{display:inline-flex;align-items:center;min-height:44px;padding:0 12px;color:var(--lt-ink);border-radius:8px;font-size:15px;text-decoration:none}.lt-tab:hover{background:var(--lt-board)}.lt-tabs .lt-tab[aria-current]{color:var(--lt-indigo);background:var(--lt-indigo-soft);font-weight:700}.lt-bar-keys{display:inline-flex;align-items:center;gap:6px}.lt-boards{display:none}.lt-pin{display:flex;align-items:flex-start;gap:12px;max-width:1032px;margin:20px auto 0;padding:12px 16px;background:var(--lt-post);border:1px solid var(--lt-line);border-radius:10px}.lt-pin-tag{flex:none;padding:0 8px;color:#fff;background:var(--lt-indigo);border-radius:4px;font-size:14px;font-weight:700}.lt-top{display:grid;grid-template-columns:minmax(0, 1.1fr) minmax(0, .9fr);gap:40px;align-items:center;max-width:1080px;margin:0 auto;padding:50px 24px 30px}.lt-top h1{margin-top:10px;font-size:36px;line-height:1.3}.lt-claim{margin-top:10px;font-size:21px;font-weight:700}.lt-lede{margin-top:14px;color:var(--lt-mute);font-size:17px}.lt-lookup{padding:22px 24px 18px;background:var(--lt-post);border-radius:14px;box-shadow:0 1px 0 var(--lt-line)}.lt-find{position:relative;display:flex;align-items:center;min-height:52px;padding:0 20px 0 48px;color:var(--lt-mute);border:2px solid var(--lt-indigo);border-radius:999px;text-decoration:none}.lt-find::before{content:"";position:absolute;top:16px;left:18px;width:13px;height:13px;border:2px solid var(--lt-indigo);border-radius:50%}.lt-find::after{content:"";position:absolute;top:30px;left:30px;width:7px;border-top:2px solid var(--lt-indigo);transform:rotate(45deg)}.lt-find:hover{color:var(--lt-indigo);background:var(--lt-indigo-soft)}.lt-lookup h2{margin-top:18px;font-size:16px}.lt-lookup ol{margin:6px 0 0;padding:0;list-style:none;counter-reset:lt}.lt-lookup li{border-bottom:1px solid var(--lt-line);counter-increment:lt}.lt-lookup li a{display:flex;align-items:center;gap:12px;min-height:44px;color:var(--lt-ink);text-decoration:none}.lt-lookup li a::before{content:counter(lt);flex:none;width:20px;color:var(--lt-indigo);font-weight:800}.lt-lookup li a:hover{color:var(--lt-indigo)}.lt-lookup-note{margin-top:10px;color:var(--lt-mute);font-size:13px}.lt-facts{display:grid;grid-template-columns:repeat(auto-fit, minmax(min(220px, 100%), 1fr));gap:12px}.lt-facts > div{padding:14px 18px;background:var(--lt-post);border-top:3px solid var(--lt-indigo);border-radius:10px}.lt-facts dd{color:var(--lt-mute)}.lt-thread{display:grid;gap:2px;margin-top:30px}.lt-thread > .lt-post:first-child{border-radius:12px 12px 0 0}.lt-thread > .lt-post:last-child{border-radius:0 0 12px 12px}.lt-post{display:grid;grid-template-columns:112px minmax(0, 1fr);overflow:hidden;background:var(--lt-post)}.lt-post-meta{display:grid;align-content:start;justify-items:start;gap:6px;padding:20px 16px;background:var(--lt-side);border-right:1px solid var(--lt-line)}.lt-floor{color:var(--lt-mute);font-size:13px;font-weight:700}.lt-role{padding:0 8px;border-radius:4px;font-size:13px;font-weight:700}.lt-post-ask .lt-role{color:var(--lt-indigo);background:var(--lt-indigo-soft)}.lt-post-reply .lt-role{color:var(--lt-green);background:var(--lt-green-soft)}.lt-post-body{min-width:0;padding:20px 26px 22px}.lt-post-ask{box-shadow:inset 4px 0 0 var(--lt-indigo)}.lt-post-ask .lt-post-body :is(h2,h3,h4){font-size:21px;line-height:1.45}.lt-post-reply{box-shadow:inset 4px 0 0 var(--lt-green)}.lt-post-reply .v4-rich p + p{margin-top:10px}.lt-answer-title{margin:4px 0 8px;font-size:20px}.lt-steps{display:grid;gap:10px;margin:0;padding:0;list-style:none;counter-reset:st}.lt-steps li{position:relative;display:grid;padding-left:40px;counter-increment:st}.lt-steps li::before{content:counter(st);position:absolute;top:2px;left:0;display:grid;place-items:center;width:26px;height:26px;color:#fff;background:var(--lt-green);border-radius:50%;font-size:14px;font-weight:700}.lt-steps span{color:var(--lt-mute);font-size:15px}.lt-fold{border-bottom:1px solid var(--lt-line)}.lt-fold summary{display:flex;align-items:center;min-height:52px;font-weight:700;cursor:pointer}.lt-fold summary::after{content:"+";margin-left:auto;padding-left:12px;color:var(--lt-green)}.lt-fold[open] summary::after{content:"−"}.lt-fold p{padding-bottom:14px;color:var(--lt-mute)}.lt-solved{max-width:1032px;margin-top:40px;margin-bottom:60px;padding-top:40px;padding-bottom:46px;text-align:center;background:var(--lt-post);border-radius:14px}.lt-solved-tag{display:inline-block;padding:2px 12px;color:#fff;background:var(--lt-green);border-radius:999px;font-size:14px;font-weight:700}.lt-solved h2{margin-top:10px;font-size:28px}.lt-solved > p:not(.lt-row):not(.lt-solved-tag){margin-top:4px;color:var(--lt-mute)}.lt-solved .lt-row{justify-content:center}.lt-menu{margin:0;padding:0;list-style:none;border-top:1px solid var(--lt-line)}.lt-dish{display:flex;align-items:center;gap:20px;padding:16px 14px;border-bottom:1px dashed var(--lt-line)}.lt-dish-rec{background:var(--lt-green-soft)}.lt-dish-main{flex:1;min-width:0}.lt-dish-line{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px}.lt-dish-line b{font-size:19px}.lt-dish-line em{padding:0 6px;color:var(--lt-green);border:1.5px solid var(--lt-green);border-radius:3px;font-size:13px;font-style:normal;font-weight:700}.lt-dish-line i{flex:1;min-width:24px;border-bottom:2px dotted var(--lt-line)}.lt-dish-line strong{font-size:22px}.lt-dish-line small{color:var(--lt-mute)}.lt-dish-spec{display:flex;flex-wrap:wrap;gap:2px 26px;margin-top:4px}.lt-dish-spec > div{display:flex;align-items:baseline;gap:8px}.lt-dish-spec dd{color:var(--lt-mute)}.lt-dish-note{margin-top:2px;color:var(--lt-mute);font-size:14px}.lt-file-tabs{display:flex;flex-wrap:wrap;gap:2px 8px;border-bottom:1px solid var(--lt-line)}.lt-file-tabs a{display:inline-flex;align-items:center;min-height:44px;padding:0 10px;color:var(--lt-mute);border-bottom:3px solid transparent;text-decoration:none}.lt-file-tabs a[aria-selected="true"]{color:var(--lt-indigo);border-bottom-color:var(--lt-indigo);font-weight:700}.lt-file{margin-top:14px}.lt-file-label{color:var(--lt-mute);font-size:13px}.lt-file-box{display:flex;align-items:center;gap:16px;margin-top:4px;padding:14px 16px;background:var(--lt-side);border:1px dashed #b9bfd0;border-radius:10px}.lt-file-icon{display:grid;flex:none;place-items:center;width:46px;height:46px;color:var(--lt-indigo);background:var(--lt-indigo-soft);border-radius:10px}.lt-file-icon svg{width:26px;height:26px}.lt-file-name{display:flex;flex:1;flex-wrap:wrap;align-items:baseline;gap:2px 10px;min-width:0}.lt-file-name b{font-size:18px}.lt-file-name em{display:none;padding:0 6px;color:#fff;background:var(--lt-green);border-radius:3px;font-size:12px;font-style:normal}.lt-file[data-v4-current] .lt-file-name em{display:inline-block}.lt-file-name span{flex-basis:100%;color:var(--lt-mute);font-size:14px}.lt-pagehead{padding-top:36px;padding-bottom:20px}.lt-crumbs{display:flex;flex-wrap:wrap;gap:8px;color:var(--lt-mute);font-size:14px}.lt-crumbs a,.lt-crumbs span{display:inline-flex;align-items:center;min-height:44px}.lt-pagehead h1{margin-top:4px;font-size:34px;line-height:1.35}.lt-pagehead .lt-sub{margin-top:6px}.lt-pagebody{display:grid;gap:2px;padding-bottom:70px}.lt-pagebody > .lt-menu,.lt-pagebody > .lt-files{padding:16px 20px;background:var(--lt-post);border-radius:12px}.lt-pagebody > .lt-post-ask{margin-top:24px;border-radius:12px 12px 0 0}.lt-pagebody > .lt-post-reply{border-radius:0 0 12px 12px}.lt-steps-plain li{padding-left:40px}.lt-topic{display:grid;gap:22px}.lt-post-lead{border-radius:12px;box-shadow:none;grid-template-columns:minmax(0, 1fr)}.lt-qa{display:grid;gap:2px}.lt-qa > .lt-post:first-child{border-radius:12px 12px 0 0}.lt-qa > .lt-post:last-child{border-radius:0 0 12px 12px}.lt-qa > .lt-post:only-child{border-radius:12px}.lt-qa-sub{margin-left:112px}.lt-qa-sub .lt-post-body :is(h3,h4){font-size:18px}.lt-divider{margin-top:10px}.lt-divider > h2{display:flex;align-items:center;gap:10px;color:var(--lt-indigo);font-size:22px}.lt-divider > h2::after{content:"";flex:1;border-top:1px solid #c3c8d6}.lt-divider > .v4-rich{margin-top:8px}.lt-related{margin-top:36px}.lt-related h2{font-size:18px}.lt-related p{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.lt-gate{display:grid;align-content:center;justify-items:center;gap:16px;min-height:72vh;padding:50px 20px}.lt-hop{width:min(580px, 100%);padding:0 28px 28px;background:var(--lt-post);border-top:4px solid var(--lt-indigo);border-radius:12px}.lt-hop .lt-post-meta{display:flex;gap:10px;margin:0 -28px 18px;padding:12px 28px;border-right:0;border-bottom:1px solid var(--lt-line)}.lt-hop .lt-role{color:var(--lt-indigo);background:var(--lt-indigo-soft)}.lt-hop h1{font-size:28px}.lt-hop-to{display:grid;margin-top:12px;padding:10px 14px;overflow-wrap:anywhere;background:var(--lt-side);border-radius:8px}.lt-hop-to span{color:var(--lt-mute);font-size:13px}.lt-wait{display:grid;justify-items:start;gap:10px;margin-top:18px;--v4-bar-h:6px;--v4-bar-track:var(--lt-indigo-soft);--v4-bar-fill:var(--lt-indigo)}.lt-foot{background:var(--lt-post);border-top:1px solid var(--lt-line)}.lt-foot-in{display:grid;grid-template-columns:1.4fr 1.2fr 1fr .8fr;gap:32px;max-width:1080px;margin:0 auto;padding:46px 24px 30px}.lt-foot-name{display:flex;align-items:center;gap:14px;font-size:28px;font-weight:800}.lt-foot-name .lt-badge{width:48px;height:48px;border-radius:14px;font-size:20px}.lt-foot-brand > p:last-child{margin-top:10px;color:var(--lt-mute);font-size:15px}.lt-foot-col h2{margin-bottom:8px;color:var(--lt-indigo);font-size:14px;letter-spacing:.08em}.lt-foot-nav{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.lt-foot-a{color:var(--lt-ink);text-decoration:none}.lt-foot-a:hover{color:var(--lt-indigo)}.lt-foot-keys{display:flex;flex-wrap:wrap;gap:0 18px}.lt-foot-keys a{display:inline-flex;align-items:center;min-height:44px}.lt-foot .v4-rich{color:var(--lt-mute);font-size:15px}.lt-foot-strip{display:flex;flex-wrap:wrap;justify-content:space-between;gap:4px 20px;padding:14px max(24px, calc((100% - 1032px) / 2));color:var(--lt-mute);background:var(--lt-board);font-size:14px}@media (max-width: 960px){.lt-tabs,.lt-bar-keys .lt-tab-in{display:none}.lt-bar-keys{margin-left:auto}.lt-boards{display:block}.lt-boards summary{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:1.5px solid var(--lt-line);border-radius:8px;cursor:pointer;list-style:none}.lt-boards summary::-webkit-details-marker{display:none}.lt-boards-list{position:absolute;top:100%;right:0;left:0;z-index:30;display:grid;grid-template-columns:1fr 1fr;padding:10px 24px 16px;background:var(--lt-post);border-bottom:1px solid var(--lt-line)}.lt-boards-list .lt-tab[aria-current]{color:var(--lt-indigo);font-weight:700}.lt-top{grid-template-columns:minmax(0, 1fr);gap:26px}.lt-foot-in{grid-template-columns:1fr 1fr}}@media (max-width: 640px){.lt-bar-in{gap:8px;min-height:60px;padding:0 12px}.lt-site{font-size:16px}.lt-boards-list{padding:10px 16px 14px}.lt-pin{margin:14px 12px 0}.lt-solved{margin-right:12px;margin-left:12px}.lt-top{padding:34px 16px 22px}.lt-top h1,.lt-pagehead h1{font-size:28px}.lt-claim{font-size:18px}.lt-lookup{padding:18px 16px 14px}.lt-wrap{padding-right:12px;padding-left:12px}.lt-post{grid-template-columns:minmax(0, 1fr)}.lt-post-meta{display:flex;align-items:center;gap:10px;padding:10px 16px;border-right:0;border-bottom:1px solid var(--lt-line)}.lt-post-body{padding:16px 16px 18px}.lt-qa-sub{margin-left:0}.lt-dish{flex-wrap:wrap;gap:10px;padding:14px 8px}.lt-dish .lt-btn{width:100%}.lt-file-box{flex-wrap:wrap}.lt-file-box .lt-btn{width:100%}.lt-hop{padding:0 18px 22px}.lt-hop .lt-post-meta{margin:0 -18px 16px;padding:10px 18px}.lt-foot-in{grid-template-columns:minmax(0, 1fr);gap:22px;padding:36px 16px 24px}.lt-foot-strip{padding:14px 16px}}.v4-lattice .lt-bar-keys{display:flex;flex-wrap:wrap;align-items:center;gap:10px}@media (min-width:1200px){.v4-lattice .lt-bar-in{display:grid;grid-template-areas:"brand account" "nav nav";grid-template-columns:1fr auto;gap:12px 24px;height:auto;min-height:0;padding-block:22px 0}.v4-lattice .lt-site{grid-area:brand;margin:0;font-size:24px}.v4-lattice .lt-bar-in [data-v4-original-nav]{grid-area:nav;margin:0;min-width:0;justify-content:flex-start;gap:6px;border-bottom:1px solid #454f99}.v4-lattice .lt-bar-keys{grid-area:account;justify-self:end;margin:0}}.v4-lattice .lt-bar-in [data-v4-original-nav] a{padding:10px 22px;border:1px solid #d3d5e7;border-radius:8px 8px 0 0;background:#f3f4fa}.v4-lattice{--v4-notice-bg:rgb(255, 255, 255);--v4-notice-ink:rgb(31, 35, 51)}.v4.v4-lattice .v4-top-announcement-inner{width:100%;max-width:none;padding-left:0;padding-right:0}.v4.v4-lattice .v4-top-announcement-inner{max-width:1080px;padding-left:24px;padding-right:24px}@media (max-width: 640px){.v4.v4-lattice .v4-top-announcement-inner{padding-left:12px;padding-right:12px}}