:root{--ink:#1f2937;--muted:#5f6b7a;--accent:#245cc5;--line:#dce3ed;--paper:#fafbfd}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button,textarea,input,select{font:inherit}button,a,textarea,select,input{outline-offset:5px}header{max-width:1240px;margin:auto;padding:24px 36px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{font-size:23px;letter-spacing:-1px;font-weight:750;display:flex;align-items:center;gap:10px}.brand-mark{background:var(--accent);color:white;border-radius:11px;padding:1px 10px;font-size:26px}.nav{display:flex;gap:28px;font-size:14px}.local{font-size:12px;letter-spacing:.03em;color:var(--accent)}main{max-width:1240px;margin:auto;padding:55px 36px}.hero{display:grid;grid-template-columns:1fr 260px;gap:50px;align-items:center;margin-bottom:40px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}h1{font-size:clamp(40px,6vw,68px);line-height:1.08;letter-spacing:-3px;max-width:800px;margin:15px 0 20px;font-weight:650}h1 span{color:var(--accent)}.intro{color:var(--muted);max-width:580px;font-size:17px}.hero-note{border-left:1px solid var(--line);padding:20px 0 20px 32px;font-size:14px}.hero-note strong{display:block;font-size:28px;font-weight:500;letter-spacing:-1px}.hero-note p{color:var(--muted)}.workspace{display:grid;grid-template-columns:220px minmax(0,1fr);background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 12px 40px #1e3a5f0a}.sidebar{padding:25px 15px;background:#f3f6fb;border-right:1px solid var(--line)}.sidebar-label{font-size:11px;letter-spacing:.13em;color:var(--muted);padding:0 15px 14px}.tool-link{display:flex;gap:12px;padding:13px 15px;border-radius:9px;margin-bottom:6px;font-size:14px}.tool-link.active{background:var(--accent);color:white}.tool-link:hover{text-decoration:none;background:#e5edfa}.tool-link.active:hover{background:var(--accent)}.tool-icon{width:22px;font-weight:700}.side-foot{font-size:12px;color:var(--muted);padding:35px 15px 0}.editor{padding:28px 30px}.editor-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.editor h2{font-size:23px;margin:0;letter-spacing:-.6px}.editor-heading p{font-size:13px;color:var(--muted);margin:5px 0 20px}.badge{white-space:nowrap;background:#eff5ff;border:1px solid #d4e2fa;border-radius:20px;font-size:11px;padding:3px 10px;color:var(--accent)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:20px}.stat{background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;padding:12px 16px}.stat strong{font-size:26px;font-weight:550;display:block;line-height:1.3}.stat small{color:var(--muted);font-size:11px}.input-label{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);margin-bottom:8px}.sample{border:0;background:none;color:var(--accent);cursor:pointer;font-size:12px;text-decoration:underline}textarea{width:100%;min-height:235px;border:1px solid #cbd5e1;border-radius:10px;resize:vertical;padding:18px;line-height:1.8;background:#fff;color:var(--ink)}textarea::placeholder{color:#67768a}.controls{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-top:15px;flex-wrap:wrap}.actions{display:flex;gap:8px;flex-wrap:wrap}button.btn{padding:9px 16px;background:var(--accent);color:white;border:1px solid var(--accent);border-radius:7px;cursor:pointer;font-size:13px}button.secondary{background:white;color:var(--ink);border-color:var(--line)}button:hover{filter:brightness(.96)}select{padding:7px;border:1px solid var(--line);border-radius:7px;font-size:13px}.status{font-size:12px;color:var(--accent);min-height:20px}.privacy-note{font-size:11px;color:var(--muted);margin:14px 0 0}.ad{min-height:100px;display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px dashed #cbd5e1;border-radius:10px;margin:32px 0;color:#5f6b7a;background:#f5f8fc;gap:3px}.ad small{font-size:9px;letter-spacing:.18em}.ad span{font-size:12px}.below{display:grid;grid-template-columns:1.5fr 1fr;gap:65px;padding:12px 0 35px}.below h2{font-size:27px;letter-spacing:-.8px}.below p,.below li{font-size:14px;color:var(--muted)}.below ol{padding-left:20px}.below li{padding:7px 0}.faq details{border-bottom:1px solid var(--line);padding:13px 0;font-size:14px}.faq summary{cursor:pointer;font-weight:550}.feature-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;border-top:1px solid var(--line);padding:30px 0}.feature-strip strong{font-size:14px}.feature-strip p{font-size:12px;color:var(--muted);margin:6px 0}footer{border-top:1px solid var(--line);max-width:1168px;margin:auto;padding:25px 0 35px;display:flex;justify-content:space-between;color:var(--muted);font-size:12px}footer div{display:flex;gap:20px}.document{max-width:780px;min-height:65vh}.document h1{font-size:46px}.document h2{font-size:23px;margin-top:30px}.document p{color:var(--muted)}@media(max-width:800px){header{padding:20px}.nav{gap:16px}.local{display:none}main{padding:35px 20px}.hero{grid-template-columns:1fr;gap:0}.hero-note{display:none}.workspace{grid-template-columns:1fr}.sidebar{display:flex;overflow:auto;border-right:0;border-bottom:1px solid var(--line);padding:12px;gap:5px}.sidebar-label,.side-foot{display:none}.tool-link{white-space:nowrap;margin:0;font-size:12px;padding:10px}.editor{padding:22px 18px}.stats{gap:6px}.stat{padding:10px}.stat strong{font-size:23px}.stat small{font-size:10px}.below{grid-template-columns:1fr;gap:15px}.feature-strip{gap:20px}footer{margin:0 20px;gap:15px;flex-wrap:wrap}h1{letter-spacing:-2px}.badge{display:none}}@media(prefers-reduced-motion:no-preference){button,.tool-link{transition:background .15s,filter .15s}}
/* Japanese reading tool */
.option{font-size:13px;display:flex;align-items:flex-start;gap:8px}.option input{margin-top:5px;accent-color:var(--accent)}.custom-annotations{font-size:13px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;margin-bottom:18px}.custom-annotations summary{cursor:pointer;font-weight:600}.custom-annotations p{color:var(--muted)}.custom-annotations textarea{min-height:100px;display:block;margin:8px 0}.custom-annotations pre{white-space:pre-wrap;background:var(--paper);padding:10px}.result-heading{font-size:11px;letter-spacing:.1em;font-weight:500;color:var(--muted)}.ruby-output{background:#f8fafc;border:1px solid var(--line);border-radius:10px;min-height:160px;padding:26px 20px;font-size:24px;line-height:3.1;white-space:pre-wrap;overflow-wrap:anywhere;overflow-x:auto}.ruby-output ruby{ruby-position:over;white-space:nowrap}.ruby-output rt{font-size:11px;color:var(--accent);font-weight:500}.unresolved{text-decoration:underline dotted #7186a8;text-underline-offset:5px}.result-actions{margin-top:15px}button:disabled{opacity:.5;cursor:default}.ruby-output[aria-busy=true]{opacity:.55}
.chinese-options{display:flex;gap:12px;align-items:center;margin:20px 0;font-size:14px;flex-wrap:wrap}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}header{gap:18px}.hero h1{overflow-wrap:anywhere}.tool-link span[data-i18n]{min-width:0}@media(max-width:1100px){header>.local{display:none}}@media(max-width:600px){header{flex-wrap:wrap}.brand{font-size:21px}.nav{margin-left:auto}h1{letter-spacing:-1.5px}}html:lang(zh-Hant) h1,html:lang(zh-Hans) h1,html:lang(ja) h1,html:lang(ko) h1{line-height:1.3;letter-spacing:-1px}

/* Language picker */
.language-picker{position:relative;flex-shrink:0}.language-trigger{display:flex;align-items:center;gap:9px;min-height:44px;padding:9px 12px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);font-size:13px;font-weight:550;cursor:pointer;list-style:none;box-shadow:0 2px 3px #1e3a5f03;user-select:none}.language-trigger::-webkit-details-marker{display:none}.language-trigger>svg{width:18px;height:18px;color:var(--accent);flex-shrink:0}.language-trigger .language-chevron{width:16px;height:16px;color:#73839a}.language-trigger:hover,#language-menu[open] .language-trigger{background:#f1f6ff;border-color:#b9ccef}.language-trigger:focus-visible,.language-option:focus-visible{outline:2px solid var(--accent);outline-offset:3px}#language-menu[open] .language-chevron{transform:rotate(180deg)}.language-panel{position:absolute;z-index:30;top:calc(100% + 10px);right:0;width:248px;max-width:calc(100vw - 40px);padding:10px;background:#fff;border:1px solid #dce5f2;border-radius:16px;box-shadow:0 16px 48px #1e3a5f1c,0 3px 8px #1e3a5f08}.language-panel-heading{display:flex;align-items:center;justify-content:space-between;padding:6px 10px 11px;margin-bottom:4px;border-bottom:1px solid #edf1f7;font-size:11px;font-weight:650;color:var(--muted);letter-spacing:.04em}.language-count{font-size:10px;font-weight:500;color:#66758c;background:#f1f5fa;border-radius:5px;padding:1px 5px}.language-option{display:flex;align-items:center;gap:11px;width:100%;min-height:44px;margin:3px 0;padding:8px 10px;border:0;border-radius:9px;background:transparent;color:var(--ink);text-align:left;cursor:pointer}.language-option:hover{background:#f3f6fb;filter:none}.language-code{display:grid;place-items:center;flex-shrink:0;width:28px;height:28px;border-radius:7px;background:#f1f4f9;color:#66758c;font-size:10px;font-weight:650}.language-name{flex:1;font-size:14px}.language-check{width:18px;height:18px;color:var(--accent);visibility:hidden}.language-option[aria-pressed=true]{background:#edf4ff;color:var(--accent);font-weight:600}.language-option[aria-pressed=true] .language-code{color:var(--accent);background:#dce9ff}.language-option[aria-pressed=true] .language-check{visibility:visible}.language-picker.is-loading .language-trigger{opacity:.65}.language-status{position:absolute;right:0;top:calc(100% + 12px);z-index:35;max-width:248px;margin:0;padding:10px 12px;border:1px solid #f0d5d5;border-radius:10px;background:#fff;color:#9f2e2e;font-size:12px;box-shadow:0 8px 24px #1e3a5f12}.language-status:empty{display:none}.language-picker:has(details[open]) .language-status{top:calc(100% + 365px)}@media(prefers-reduced-motion:no-preference){.language-trigger,.language-option{transition:background .15s,border-color .15s}.language-chevron{transition:transform .15s}.language-panel{animation:language-reveal .16s ease-out}@keyframes language-reveal{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}}@media(max-width:600px){header{display:grid;grid-template-columns:1fr auto;gap:14px 12px}.brand{grid-column:1/-1}.nav{grid-column:1;grid-row:2;justify-self:start;margin-left:0;gap:14px;font-size:13px}.language-picker{grid-column:2;grid-row:2;justify-self:end}.language-trigger{padding:8px 10px;gap:7px}.language-panel{width:248px}}

.hero h1>span[data-i18n]{color:inherit}
.breadcrumbs{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-size:12px;color:var(--muted);margin:-22px 0 30px}.breadcrumbs a{color:var(--accent)}.tool-directory{padding:36px 0;border-top:1px solid var(--line)}.tool-directory h2{font-size:28px;letter-spacing:-.6px;line-height:1.35;margin:10px 0}.tool-directory>p{color:var(--muted);font-size:14px;margin:0 0 24px}.directory-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.directory-card{position:relative;display:block;background:#fff;padding:24px;border:1px solid var(--line);border-radius:14px}.directory-card h3{font-size:17px;font-weight:600;margin:0 22px 8px 0;line-height:1.45}.directory-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.7}.directory-card:hover{background:#f4f8ff;border-color:#b9ccef;text-decoration:none}.directory-arrow{position:absolute;right:18px;top:20px;color:var(--accent)}@media(max-width:800px){.directory-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:500px){.directory-grid{grid-template-columns:1fr}.tool-directory h2{font-size:24px}}