:root{--paper:#fbfcf7;--ink:#102033;--text:#334155;--muted:#697586;--line:#d8e1ea;--blue:#2563eb;--blue2:#1d4ed8;--green:#10b981;--amber:#fff7ed;--amberLine:#fdba74;--amberText:#9a3412;--shadow:0 24px 70px #1f375b1f;--soft:0 12px 32px #1f375b14}*{box-sizing:border-box}html,body{background:var(--paper);min-height:100%;color:var(--text);margin:0;overflow-x:hidden}body{font-family:Arial,Helvetica,sans-serif}body:before{content:"";z-index:-2;background:radial-gradient(circle at 11% 15%,#e7f5ff 0 190px,#0000 360px),radial-gradient(circle at 88% 8%,#e5fff3 0 150px,#0000 330px),linear-gradient(#fffef9 0,#f8fbf5 48%,#fff 100%);position:fixed;inset:0}body:after{content:"";z-index:-1;opacity:.42;background-image:linear-gradient(#2563eb14 1px,#0000 1px),linear-gradient(90deg,#10b98114 1px,#0000 1px);background-size:44px 44px;position:fixed;inset:0;-webkit-mask-image:linear-gradient(#000 0,#0000 72%);mask-image:linear-gradient(#000 0,#0000 72%)}a{color:inherit;text-decoration:none}button,select,input{font:inherit}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline-offset:2px;outline:3px solid #2563eb38}.wrap{width:min(1160px,100% - 32px);margin:0 auto}.top{z-index:30;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fbfcf7db;border-bottom:1px solid #d8e1ead9;position:sticky;top:0}.bar{justify-content:space-between;align-items:center;gap:14px;min-height:68px;padding:10px 0;display:flex}.brand{color:var(--ink);letter-spacing:-.03em;flex:none;align-items:center;gap:12px;min-width:0;font-weight:850;display:flex}.brand-name{white-space:nowrap}.mark{background:linear-gradient(135deg, var(--blue), #38bdf8);color:#fff;border-radius:14px;flex:none;place-items:center;width:38px;height:38px;display:grid;box-shadow:0 10px 28px #2563eb40}.nav{border:1px solid var(--line);background:#ffffffb3;border-radius:999px;flex-wrap:nowrap;align-items:center;gap:4px;padding:5px;display:flex}.nav a{white-space:nowrap;border-radius:999px;padding:8px;font-size:12.5px}.nav .active{background:var(--ink);color:#fff}.nav .future{opacity:.45;pointer-events:none}.menu-btn{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:14px;flex:none;justify-content:center;align-items:center;width:44px;height:44px;padding:0;display:none}.menu-btn .bars{background:var(--ink);border-radius:2px;width:18px;height:2px;transition:background .16s;position:relative}.menu-btn .bars:before,.menu-btn .bars:after{content:"";background:var(--ink);border-radius:2px;width:18px;height:2px;transition:transform .16s,top .16s;position:absolute;left:0}.menu-btn .bars:before{top:-6px}.menu-btn .bars:after{top:6px}.menu-btn[aria-expanded=true] .bars{background:0 0}.menu-btn[aria-expanded=true] .bars:before{top:0;transform:rotate(45deg)}.menu-btn[aria-expanded=true] .bars:after{top:0;transform:rotate(-45deg)}.mobile-nav-wrap{padding-bottom:12px}.mobile-nav{border:1px solid var(--line);box-shadow:var(--soft);background:#ffffffeb;border-radius:20px;flex-direction:column;gap:6px;padding:10px;display:flex}.mobile-nav a{min-height:44px;color:var(--ink);border-radius:14px;align-items:center;padding:10px 14px;font-size:15px;font-weight:700;display:flex}.mobile-nav a.active{background:var(--ink);color:#fff}@media (min-width:1200px){.mobile-nav-wrap{display:none}}.zh{color:var(--muted);font-size:11px;display:block}.right{flex:none;align-items:center;gap:10px;display:flex}.seg{border:1px solid var(--line);background:#fff;border-radius:999px;align-items:center;gap:2px;padding:3px;display:inline-flex}.seg button{color:#546179;cursor:pointer;white-space:nowrap;background:0 0;border:0;border-radius:999px;min-height:36px;padding:0 13px;font-size:13px;font-weight:850}.seg button[aria-pressed=true]{background:var(--ink);color:#fff;box-shadow:0 6px 16px #1020332e}.start,.primary,.secondary{cursor:pointer;border-radius:999px;font-weight:780;transition:all .16s}.start,.primary{background:linear-gradient(135deg, var(--blue), var(--blue2));color:#fff;border:0;padding:12px 16px;box-shadow:0 12px 28px #2563eb3d}.start{white-space:nowrap}.secondary,.copy-small{color:var(--ink);border:1px solid var(--line);background:#fff;padding:10px 14px}.hero{padding:46px 0 26px}.hero-top{text-align:center;max-width:780px;margin:0 auto 26px}.hero-single{max-width:880px;margin:0 auto}.hero-strip{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;max-width:880px;margin:18px auto 0;display:flex}.chip{border:1px solid var(--line);box-shadow:var(--soft);color:#203048;background:#fff;border-radius:999px;padding:9px 13px;font-size:13px;font-weight:850}.ribbon{border:1px solid var(--line);color:#506072;background:#fff;border-radius:999px;padding:8px 10px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px}.tool,.info,.legal-card,.safety{box-shadow:var(--soft);background:#ffffffd1;border:1px solid #d8e1eaeb;border-radius:28px}.eyebrow{color:var(--blue2);letter-spacing:.04em;text-transform:uppercase;background:#eff6ff;border-radius:999px;align-items:center;gap:8px;padding:7px 11px;font-size:12px;font-weight:820;display:inline-flex}.hero-top h1{color:var(--ink);letter-spacing:-.06em;margin:18px 0 12px;font-size:clamp(34px,4.6vw,52px);line-height:1.02}.page-title{color:var(--ink);letter-spacing:-.06em;margin:18px 0;font-size:clamp(38px,6vw,72px);line-height:.95}.lead{color:var(--text);max-width:760px;font-size:18px;line-height:1.72}.hero-top .lead{max-width:640px;margin:0 auto;line-height:1.6}.quick,.schema-ribbons,.links{flex-wrap:wrap;gap:10px;margin:22px 0;display:flex}.quick span,.schema-ribbons code,.links a{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:999px;padding:9px 12px}.locale{color:var(--muted);line-height:1.6}.tool-shell{min-width:0}.tool{padding:24px}.tool-head{grid-template-columns:1fr;gap:18px;display:grid}.tool h2,.section-title h2,.sections h2{color:var(--ink);letter-spacing:-.04em}.controls,.checkgrid,.actions,.bulk-row{flex-wrap:wrap;align-items:end;gap:12px;display:flex}.controls label,.bulk-row label{color:var(--ink);flex-direction:column;gap:6px;font-weight:760;display:flex}.select,input[type=number]{border:1px solid var(--line);width:100%;max-width:260px;color:var(--ink);background:#fff;border-radius:16px;padding:12px 14px}.checkgrid{margin:18px 0}.checkgrid label{border:1px solid var(--line);background:#f8fafc;border-radius:16px;padding:11px 12px}.output,.bulk{background:#f8fbff;border:1px solid #dbeafe;border-radius:24px;min-width:0;margin-top:18px;padding:18px}.field{border-bottom:1px solid #e5edf7;grid-template-columns:150px minmax(0,1fr) auto;align-items:center;gap:10px;padding:10px 0;display:grid}.field:last-child{border-bottom:0}.field strong{color:var(--ink)}.field code{white-space:pre-wrap;overflow-wrap:anywhere;color:#0f172a}.copy-small{cursor:pointer;border-radius:999px;padding:7px 10px}.safety{background:var(--amber);border-color:var(--amberLine);color:var(--amberText);margin-top:14px;padding:14px 16px;line-height:1.55;display:block}.safety strong{color:#7c2d12;margin-bottom:4px;display:block}.status{color:#047857;background:#ecfdf5;border:1px solid #a7f3d0;border-radius:16px;margin-top:12px;padding:10px 12px;font-weight:740}.status.error{color:#b91c1c;background:#fef2f2;border-color:#fecaca}.err{color:#b91c1c;margin-top:10px;font-weight:760}.table-wrap{border:1px solid var(--line);background:#fff;border-radius:18px;margin-top:12px;overflow-x:auto}.preview-note{color:var(--muted);margin:12px 0 0;font-size:14px}table{border-collapse:collapse;width:100%;min-width:760px}th,td{text-align:left;vertical-align:top;border-bottom:1px solid #edf2f7;padding:10px}th{text-transform:uppercase;color:var(--muted);background:#f8fafc;font-size:12px}.sections{padding:28px 0 64px}.section-title{max-width:760px}.cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:22px 0;display:grid}.info,.legal-card{padding:22px}.home-section+.home-section{margin-top:52px}.home-section .section-title{max-width:none;margin-bottom:22px}.home-section .section-title h2{color:var(--ink);letter-spacing:-.04em;margin:0;font-size:24px;font-weight:800;line-height:1.2}.home-section .section-title p{max-width:760px;margin:12px 0 0;line-height:1.55}.home-card-grid{margin:0}.home-surface{box-shadow:var(--soft);background:#ffffffd1;border:1px solid #d8e1eaeb;border-radius:24px;padding:22px}.home-info-card h3{color:var(--ink);margin:0 0 14px;font-size:18px;line-height:1.3}.home-info-card p{margin:0;line-height:1.5}.faq-list{gap:16px;display:grid}.faq-item summary{cursor:pointer;color:var(--ink);line-height:1.45}.faq-item summary:focus-visible{outline-offset:4px;border-radius:6px;outline:3px solid #2563eb38}.faq-item p{max-width:900px;margin:16px 0 0;line-height:1.65}.legal-main{max-width:920px;padding:56px 0 80px}.legal-header{max-width:760px;margin:0 auto 28px}.legal-header .page-title{font-size:clamp(38px,6vw,64px)}.legal-effective{color:var(--muted);font-weight:700}.legal-card{overflow-wrap:anywhere;max-width:760px;margin:0 auto;padding:clamp(22px,4vw,42px)}.legal-card p,.legal-card li{font-size:16px;line-height:1.68}.legal-card p{margin:0 0 16px}.legal-card ul{margin:10px 0 20px;padding-left:24px}.legal-card li+li{margin-top:9px}.legal-intro{color:var(--text);font-size:17px}.legal-section{border-top:1px solid var(--line);margin-top:26px;padding-top:26px}.legal-section h2{color:var(--ink);letter-spacing:-.025em;margin:0 0 14px;font-size:clamp(20px,3vw,25px);line-height:1.25}.legal-section .safety{margin-top:0}.legal-section .safety p{margin-bottom:10px}.legal-section .safety p:last-child{margin-bottom:0}.support-email{overflow-wrap:anywhere;font-weight:800}.contact-lead{font-size:clamp(18px,2.5vw,21px)!important}.footer{color:var(--muted);padding:34px 0 60px}.footer h2{color:var(--ink);letter-spacing:-.015em;margin:0;font-size:15px;line-height:1.3}.footer strong{color:var(--ink)}.footer-section{min-width:0}.footer-states{border-bottom:1px solid var(--line);padding-bottom:28px}.footer-links{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.footer-links a,.footer-contact-link{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:999px;padding:9px 12px;line-height:1.25}.footer-state-links a{font-size:14px}.footer-info-grid{grid-template-columns:minmax(0,1.1fr) minmax(150px,.55fr) minmax(0,1.35fr);gap:18px;padding:28px 0;display:grid}.footer-info-grid>.footer-section{border:1px solid var(--line);background:#ffffffad;border-radius:22px;padding:20px}.footer-links-stacked{align-items:flex-start}.footer-links-stacked a{overflow-wrap:anywhere;max-width:100%}.footer-contact-link{margin-top:14px;display:inline-flex}.footer-contact{border:1px solid var(--line);box-shadow:var(--soft);overflow-wrap:anywhere;background:#fff;border-radius:18px;margin-top:14px;padding:16px 18px}.footer-contact p{margin:0;line-height:1.6}.footer-contact p+p{margin-top:6px}.footer-contact a{font-weight:800}.footer-disclaimer{border-top:1px solid var(--line);margin:0;padding-top:22px;line-height:1.65}.loc-zh,html[data-locale=zh] .loc-en{display:none}html[data-locale=zh] .loc-zh{display:inline}html[data-locale=zh] .zh{color:#dbeafe}@media (max-width:1199px){.nav{display:none}.menu-btn{display:inline-flex}}@media (max-width:980px){.hero{padding-top:30px}.cards{grid-template-columns:1fr}.tool{border-radius:22px;padding:22px}.field{grid-template-columns:1fr}.copy-small{justify-self:start}.controls,.actions,.bulk-row{align-items:stretch}.controls label,.select,input[type=number],.primary,.secondary{width:100%;max-width:none}.page-title{font-size:40px}.wrap{width:min(100% - 24px,1160px)}table{min-width:680px}.footer-info-grid{grid-template-columns:1fr}}@media (max-width:640px){.bar{gap:10px;min-height:0}.brand-name{white-space:normal;max-width:118px;font-size:14px;line-height:1.05}.mark{border-radius:11px;width:32px;height:32px}.seg button{min-height:36px;padding:0 10px;font-size:12.5px}.start{display:none}.hero-top{margin-bottom:20px}.hero-top h1{font-size:30px}.hero-top .lead{font-size:16px}.hero-strip{gap:8px}}@media (max-width:430px){.chip,.quick span,.schema-ribbons code,.links a{overflow-wrap:anywhere;max-width:100%}.tool,.output,.bulk{padding:16px}.tool{border-radius:18px}.home-section+.home-section{margin-top:40px}.home-section .section-title{margin-bottom:18px}.home-card-grid,.faq-list{gap:12px}.home-surface{border-radius:20px;padding:18px}.field code{font-size:13px}.table-wrap{max-width:100%}.legal-main{padding:34px 0 56px}.legal-header{margin-bottom:20px}.legal-card{border-radius:20px;padding:20px 17px}.legal-section{margin-top:22px;padding-top:22px}.footer{padding-top:28px}.footer-states{padding-bottom:24px}.footer-info-grid{gap:12px;padding:24px 0}.footer-info-grid>.footer-section{border-radius:19px;padding:17px}.footer-links a,.footer-contact-link{overflow-wrap:anywhere;max-width:100%}.footer-contact{padding:15px}}
