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var(--line);border-radius:18px;display:grid;place-items:center;position:relative;overflow:hidden;background:var(--surface-2)}.mouse-dot{position:absolute;width:16px;height:16px;border-radius:50%;background:var(--primary);pointer-events:none}.ruler{height:130px;background:var(--surface);border:1px solid var(--line);border-radius:14px;position:relative;overflow:hidden;background-image:repeating-linear-gradient(90deg,var(--text) 0 1px,transparent 1px 10px);background-size:10px 16px;background-repeat:repeat-x}.ruler-labels{display:flex;justify-content:space-between;padding:20px 8px 0;font-size:11px;color:var(--muted)}.protractor-wrap{text-align:center}.protractor-svg{width:min(100%,600px)}.fullscreen-panel{min-height:280px;border-radius:16px;display:grid;place-items:center;font-size:34px;font-weight:800;border:1px solid var(--line)}.table-wrap{overflow:auto}.data-table{width:100%;border-collapse:collapse;font-size:13px}.data-table th,.data-table td{padding:10px;border-bottom:1px solid var(--line);text-align:left}.data-table th{color:var(--muted);font-size:12px}.bmi-bar{height:16px;border-radius:99px;background:linear-gradient(90deg,#6bb6ff 0 25%,#60a5fa 25% 50%,#ffc260 50% 75%,#ff7086 75%);position:relative}.bmi-marker{position:absolute;top:-5px;width:4px;height:26px;background:var(--text);border-radius:3px}.loading{display:grid;place-items:center;min-height:250px;color:var(--muted)}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);padding:11px 16px;background:var(--text);color:var(--bg);border-radius:12px;opacity:0;pointer-events:none;transition:.25s;z-index:200;font-weight:700;font-size:13px}.toast.show{opacity:1;transform:translate(-50%,0)}.search-modal{position:fixed;inset:0;background:rgba(5,7,20,.55);backdrop-filter:blur(8px);z-index:100;display:none;padding:8vh 20px}.search-modal.open{display:block}.search-panel{max-width:720px;margin:auto;background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:0 30px 100px rgba(0,0,0,.3);overflow:hidden}.search-head{display:flex;gap:10px;padding:14px;border-bottom:1px solid var(--line)}.search-head input{flex:1;border:0;background:transparent;color:var(--text);font-size:18px;outline:0}.search-results{max-height:60vh;overflow:auto;padding:10px}.search-result{display:flex;align-items:center;gap:12px;padding:12px;border-radius:12px}.search-result:hover{background:var(--surface-2)}.search-result span:first-child{font-size:23px}.search-result small{display:block;color:var(--muted)}.empty-state{text-align:center;padding:36px;color:var(--muted)}
.site-footer{margin-top:70px;border-top:1px solid var(--line);background:var(--surface)}.footer-grid{max-width:var(--max);margin:auto;padding:54px 24px 38px;display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px}.footer-brand{margin-bottom:12px}.footer-grid p{color:var(--muted);max-width:430px}.footer-grid h3{font-size:14px;margin:0 0 12px}.footer-links{display:grid;gap:8px}.footer-links a{color:var(--muted);font-size:13px}.footer-links a:hover{color:var(--primary)}.footer-bottom{border-top:1px solid var(--line);padding:18px 24px;text-align:center;color:var(--muted);font-size:12px}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 color-mix(in srgb,var(--danger) 45%,transparent)}50%{box-shadow:0 0 0 20px transparent}}@keyframes coinflip{0%{transform:rotateY(0)}50%{transform:rotateY(900deg) scale(1.12)}100%{transform:rotateY(1800deg)}}
@media(max-width:1000px){.tool-grid{grid-template-columns:repeat(3,1fr)}.benefit-grid{grid-template-columns:repeat(2,1fr)}.tool-layout{grid-template-columns:1fr}.tool-aside{position:static;grid-template-columns:1fr 1fr}.ad-slot{min-height:160px}.related-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){:root{--header:64px}.site-header{height:64px}.nav-wrap{padding:0 16px}.desktop-nav{display:none}.menu-btn{display:grid}.mobile-nav{top:64px}#language-select{max-width:112px;padding:0 7px}.hero{padding:58px 16px 42px}.hero h1{font-size:43px}.hero-search{height:56px;border-radius:15px}.section{padding:52px 16px}.tool-grid{grid-template-columns:repeat(2,1fr);gap:11px}.tool-card-link{min-height:105px;padding:14px;gap:10px}.tool-icon{width:39px;height:39px;font-size:19px}.tool-card-link h3{font-size:13px}.tool-card-link p{font-size:11px}.category-grid{grid-template-columns:1fr 1fr}.category-card{padding:16px;gap:12px}.category-card .cat-icon{width:46px;height:46px}.category-card h3{font-size:14px}.category-card p{display:none}.benefit-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr;gap:26px}.tool-heading{grid-template-columns:auto 1fr}.favorite-btn{grid-column:2;justify-self:start}.tool-card{padding:16px}.content-card{padding:19px}.steps{grid-template-columns:1fr}.tool-aside{grid-template-columns:1fr}.form-row,.form-row.three{grid-template-columns:1fr}.wheel-wrap{grid-template-columns:1fr}.score-num{font-size:55px}.diff-view{grid-template-columns:1fr}.world-grid{grid-template-columns:1fr}.related-grid{grid-template-columns:repeat(2,1fr)}.search-modal{padding:2vh 10px}.search-panel{border-radius:16px}.page-title h1{font-size:38px}}
@media(max-width:480px){.brand span:last-child{display:none}.nav-wrap{gap:10px}.nav-actions{gap:5px}.icon-btn,.menu-btn{width:37px;height:37px}#language-select{width:100px;font-size:12px}.hero h1{font-size:37px}.hero p{font-size:16px}.hero-stats div{min-width:100px;padding:10px}.category-grid{grid-template-columns:1fr}.benefit-grid{grid-template-columns:1fr}.tool-grid{grid-template-columns:1fr}.related-grid{grid-template-columns:1fr}.tool-card-link{min-height:auto}.section-head h2{font-size:25px}.tool-heading{grid-template-columns:1fr}.tool-large-icon{width:58px;height:58px}.favorite-btn{grid-column:1}.actions .btn{flex:1}.timer-display{font-size:54px}.score-grid{grid-template-columns:1fr}.footer-grid{padding-top:38px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation-duration:.001ms!important;transition-duration:.001ms!important}}

/* WebToolMint quality, accessibility and mobile refinements */
:focus-visible{outline:3px solid color-mix(in srgb,var(--primary) 55%,transparent);outline-offset:3px}
.skip-link{position:fixed;left:12px;top:10px;z-index:999;transform:translateY(-160%);background:var(--text);color:var(--bg);padding:10px 14px;border-radius:10px;font-weight:800}.skip-link:focus{transform:none}
button,.btn,.icon-btn,.menu-btn,.pill,select,input[type="checkbox"],input[type="radio"]{touch-action:manipulation}
.btn,.icon-btn,.menu-btn,#language-select,.pill{min-height:44px}
.input,.textarea,.select,.filter-bar>input,.hero-search input,#language-select{font-size:16px}
button:disabled,.btn:disabled{cursor:not-allowed;opacity:.55;transform:none!important;box-shadow:none!important}
.tool-card-link:focus-visible,.category-card:focus-visible,.search-result:focus-visible{border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 14%,transparent),var(--shadow)}
.capability-status{display:flex;align-items:flex-start;gap:11px;margin:0 0 18px;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2);line-height:1.45}.capability-status[hidden]{display:none}.capability-status.ok{border-color:color-mix(in srgb,var(--primary) 45%,var(--line));background:color-mix(in srgb,var(--primary) 8%,var(--surface))}.capability-status.warn{border-color:color-mix(in srgb,var(--warning) 52%,var(--line));background:color-mix(in srgb,var(--warning) 8%,var(--surface))}.capability-status.error{border-color:color-mix(in srgb,var(--danger) 55%,var(--line));background:color-mix(in srgb,var(--danger) 8%,var(--surface))}.capability-icon{width:24px;height:24px;flex:0 0 24px;display:grid;place-items:center;border-radius:50%;background:var(--surface);font-weight:900}.capability-status strong{display:block;font-size:14px}.capability-status small{display:block;color:var(--muted);margin-top:3px}
.preset-row{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:16px}.preset-row .pill{min-height:38px}
.result-box hr{border:0;border-top:1px solid var(--line);margin:14px 0}
.tool-support-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:14px}.support-item{padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2)}.support-item strong{display:block;margin-bottom:4px}.support-item p{margin:0;color:var(--muted);font-size:13px}
.use-case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.use-case{border:1px solid var(--line);border-radius:14px;padding:16px;background:var(--surface-2)}.use-case h3{font-size:15px;margin:0 0 5px}.use-case p{margin:0;color:var(--muted);font-size:13px}
.content-card>p,.content-card li{max-width:78ch}.content-card h2{line-height:1.25}.content-card h3{margin:24px 0 6px}.content-card ul{padding-left:22px}.content-card code{overflow-wrap:anywhere}
.related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.ad-slot[data-disabled="true"],.ad-slot:has(>span:first-child:last-child){display:none}
.seo-tool-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.seo-tool-list a{padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--surface);font-size:14px;font-weight:700}.seo-tool-list a:hover{border-color:var(--primary);color:var(--primary)}
.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.guide-card{display:flex;flex-direction:column;gap:8px;padding:22px;border:1px solid var(--line);border-radius:18px;background:var(--surface);transition:.2s}.guide-card:hover{transform:translateY(-3px);border-color:var(--primary);box-shadow:var(--shadow)}.guide-card small{color:var(--primary);font-weight:800}.guide-card h2,.guide-card h3{font-size:18px;line-height:1.35;margin:0}.guide-card p{color:var(--muted);font-size:14px;margin:0}.article-meta{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:13px}.article-body{max-width:820px}.article-body h2{margin-top:38px}.article-body p,.article-body li{font-size:16px}.article-callout{padding:18px;border-left:4px solid var(--primary);border-radius:0 14px 14px 0;background:color-mix(in srgb,var(--primary) 8%,var(--surface));margin:20px 0}.article-cta{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:22px;border:1px solid color-mix(in srgb,var(--primary) 45%,var(--line));border-radius:18px;background:linear-gradient(135deg,color-mix(in srgb,var(--primary) 10%,var(--surface)),var(--surface))}
.tool-card,.content-card,.aside-card,.tool-card-link,.category-card{contain:layout paint}
@media(max-width:1000px){.tool-support-grid{grid-template-columns:1fr 1fr}.seo-tool-list{grid-template-columns:repeat(3,1fr)}.guide-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){body{padding-bottom:env(safe-area-inset-bottom)}.nav-wrap{padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}.section{padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}.tool-heading p{font-size:14px}.tool-support-grid,.use-case-grid{grid-template-columns:1fr}.seo-tool-list{grid-template-columns:repeat(2,1fr)}.guide-grid{grid-template-columns:1fr}.article-cta{align-items:flex-start;flex-direction:column}.actions{position:relative}.actions .btn{min-height:48px}.drop-zone{min-height:180px}.record-panel{padding:8px 0}.capability-status{font-size:13px}.table-wrap{-webkit-overflow-scrolling:touch}}
@media(max-width:480px){.seo-tool-list{grid-template-columns:1fr}.hero-actions .btn{width:100%}.tool-page{padding-top:24px}.tool-heading h1{font-size:31px}.content-card h2{font-size:23px}.qr-output{min-height:220px}.world-card strong{font-size:21px}}
/* Hero headline readability: avoid awkward one-character wrapping on CJK titles. */
.hero-inner{max-width:1100px}
.hero h1{font-size:clamp(42px,5vw,62px);max-width:1100px;margin-left:auto;margin-right:auto}
.nowrap{white-space:nowrap}
@media(max-width:760px){.hero h1{font-size:43px;max-width:680px}}
@media(max-width:480px){.hero h1{font-size:37px}.nowrap{white-space:normal}}