:root{--ground:#F7FAF9;--surface:#FFFFFF;--surface-tint:#EAF3F0;--ink:#13221E;--ink-soft:#46605A;--line:#D5E2DE;--teal:#0C6B5A;--teal-deep:#07483D;--teal-wash:#D9ECE7;--accent-on:#FFFFFF;--good:#1F7A3D;--shadow:0 18px 40px -22px rgba(12,60,52,0.28)}*{box-sizing:border-box}html{scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}body{margin:0;background:var(--ground);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}.serif{font-family:Charter,Bitstream Charter,Cambria,Georgia,serif}.mono{font-family:ui-monospace,SF Mono,SFMono-Regular,Menlo,Consolas,monospace}.wrap{max-width:1080px;margin:0 auto;padding:0 24px}a{color:inherit}header.site{border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--ground) 88%,transparent);position:sticky;top:0;z-index:20;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.site-bar{display:flex;align-items:center;gap:26px;padding-top:14px;padding-bottom:14px}.brand{display:flex;flex-direction:column;gap:1px;text-decoration:none}.brand .en{font-weight:700;font-size:17px;letter-spacing:.12em}.brand .en em{font-style:normal;color:var(--teal)}.brand .zh{font-size:11px;color:var(--ink-soft);letter-spacing:.28em}nav.main{display:flex;gap:20px;margin-left:auto}nav.main a{text-decoration:none;font-size:13.5px;color:var(--ink-soft);letter-spacing:.02em;padding:4px 0}nav.main a:focus-visible,nav.main a:hover{color:var(--teal)}nav.main a:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:2px}.btn{display:inline-block;text-decoration:none;cursor:pointer;font-size:14px;font-weight:600;letter-spacing:.01em;padding:10px 20px;border-radius:4px;border:1px solid transparent;font-family:inherit}.btn:focus-visible{outline:2px solid var(--teal);outline-offset:3px}.btn-solid{background:var(--teal);color:var(--accent-on)}.btn-solid:hover{background:var(--teal-deep)}.btn-ghost{border-color:var(--line);color:var(--ink);background:var(--surface)}.btn-ghost:hover{border-color:var(--teal);color:var(--teal)}.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:#081714;color:#E8F2EF}.hero canvas{position:absolute;inset:0;width:100%;height:100%;display:block;opacity:.9}.hero .wrap{position:relative;z-index:1}.hero-inner{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:center;padding-top:76px;padding-bottom:56px}.eyebrow{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--teal);font-weight:700}.hero .eyebrow{color:#6FD3BC}h1{font-size:clamp(34px,5vw,50px);line-height:1.12;letter-spacing:-.015em;margin:14px 0 0;text-wrap:balance;font-weight:750}.hero h1{color:#F4FAF8}.hero .formula,.hero h1 .formula{color:#5BC9AE;white-space:nowrap}.hero p.lede{font-size:17.5px;color:#A9C4BC;max-width:34em;margin:20px 0 0}.hero-ctas{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}.hero .btn-ghost{background:transparent;border-color:rgba(232,242,239,.28);color:#E8F2EF}.hero .btn-ghost:hover{border-color:#5BC9AE;color:#5BC9AE}.hero-meta{display:flex;gap:26px;margin-top:38px;flex-wrap:wrap}.hero-meta .m{display:flex;flex-direction:column;gap:2px}.hero-meta .v{font-size:20px;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:#F4FAF8}.hero-meta .k{font-size:12px;color:#8FB0A7;letter-spacing:.05em}.hero-stats{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;border-top:1px solid rgba(232,242,239,.14);padding:20px 0 26px}.hs .v{font-size:27px;font-weight:800;letter-spacing:-.01em;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:#F4FAF8}.hs .v small{font-size:15px;font-weight:700;color:#6FD3BC;margin-left:2px}.hs .k{font-size:12px;color:#8FB0A7;letter-spacing:.05em;margin-top:2px}@media (prefers-reduced-motion:no-preference){.hero-inner>*{animation:rise .7s cubic-bezier(.2,.7,.3,1) both}.hero-inner>:nth-child(2){animation-delay:.12s}@keyframes rise{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}}.coa{background:#FFFFFF;border:1px solid #d5e2de;border-radius:6px;box-shadow:var(--shadow);padding:22px 24px 18px;max-width:420px;justify-self:end;width:100%;color:#13221E}.coa-head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:2px solid #13221e;padding-bottom:10px;margin-bottom:4px}.coa-head .t{font-weight:800;font-size:13px;letter-spacing:.18em}.coa-head .b{font-size:11.5px;color:#46605A}.coa table{width:100%;border-collapse:collapse;font-size:13px}.coa td{padding:8px 2px;border-bottom:1px solid #d5e2de;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.coa td:last-child{text-align:right;font-weight:600}.coa tr:last-child td{border-bottom:none}.coa .pass{display:inline-block;font-size:10.5px;font-weight:700;letter-spacing:.08em;color:#1F7A3D;border:1px solid rgba(31,122,61,.45);border-radius:3px;padding:1px 6px;margin-left:8px;vertical-align:1px}.coa-foot{margin-top:12px;font-size:11px;color:#46605A;display:flex;justify-content:space-between;letter-spacing:.03em}section{padding:72px 0}section+section{border-top:1px solid var(--line)}.sec-head{max-width:620px;margin-bottom:40px}h2{font-size:27px;letter-spacing:-.01em;margin:10px 0 0;text-wrap:balance;font-weight:720}.sec-head p{color:var(--ink-soft);margin:12px 0 0;font-size:15.5px}.products{display:grid;grid-template-columns:1fr 1fr;gap:24px}.product{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:26px 26px 22px;display:flex;flex-direction:column;gap:16px}.product .formula-big{font-size:30px;font-weight:700;letter-spacing:.01em;color:var(--teal)}.product h3{margin:0;font-size:19px}.product .cas{font-size:12px;color:var(--ink-soft);letter-spacing:.05em}.grades{display:flex;gap:8px;flex-wrap:wrap}.grade{font-size:12px;font-weight:600;letter-spacing:.04em;background:var(--teal-wash);color:var(--teal-deep);padding:3px 10px;border-radius:999px;text-decoration:none}a.grade:hover{background:var(--teal);color:var(--accent-on)}.spec{width:100%;border-collapse:collapse;font-size:13.5px}.spec td{padding:7px 2px;border-bottom:1px solid var(--line);color:var(--ink-soft);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.spec td:last-child{text-align:right;color:var(--ink);font-weight:600}.spec tr:last-child td{border-bottom:none}.product .actions{display:flex;gap:10px;margin-top:auto}.product .actions .btn{font-size:13px;padding:8px 16px}.grade-hero{padding:64px 0 56px;border-bottom:1px solid var(--line);background:var(--surface-tint)}.grade-hero h1{font-size:clamp(30px,4vw,42px)}.grade-hero .lede{font-size:16.5px;color:var(--ink-soft);max-width:40em;margin-top:16px}.grade-cols{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}.spec-card{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:22px 24px}.spec-card h3{margin:0 0 12px;font-size:15px;letter-spacing:.02em}.apps{display:flex;flex-direction:column;gap:14px}.app{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--teal);border-radius:4px;padding:14px 18px}.app b{font-size:14.5px}.app p{margin:4px 0 0;font-size:13.5px;color:var(--ink-soft)}.faq{display:flex;flex-direction:column;gap:10px;max-width:56em}.faq details{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:0}.faq summary{cursor:pointer;font-weight:600;font-size:14.5px;padding:14px 18px}.faq details p{margin:0;padding:0 18px 16px;font-size:14px;color:var(--ink-soft)}.faq details[open] summary{border-bottom:1px solid var(--line)}.verify-band{background:var(--surface-tint)}.verify-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}.verify-form{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}.verify-form input{font-family:ui-monospace,SF Mono,SFMono-Regular,Menlo,Consolas,monospace;font-size:15px;letter-spacing:.06em;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:11px 14px;min-width:240px;flex:1 1}.verify-form input:focus{outline:2px solid var(--teal);border-color:var(--teal)}.verify-hint{font-size:12.5px;color:var(--ink-soft);margin-top:10px}.verify-hint code{font-family:ui-monospace,Menlo,Consolas,monospace;background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:1px 6px}.verify-result{min-height:40px}.verify-result .notfound{border:1px solid var(--line);border-left:3px solid #b03a2e;background:var(--surface);border-radius:4px;padding:14px 16px;font-size:14px}.verify-badge{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:700;letter-spacing:.05em;color:var(--good);margin-bottom:12px}.verify-badge:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--good);box-shadow:0 0 0 4px rgba(31,122,61,.2)}.photos{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.photo-ph{aspect-ratio:4/3;border-radius:6px;border:1px dashed color-mix(in srgb,var(--teal) 45%,var(--line));background:linear-gradient(160deg,var(--surface-tint),var(--surface));display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;color:var(--ink-soft);text-align:center;padding:12px;position:relative;overflow:hidden}.photo-ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.photo-ph .icon{font-size:26px;line-height:1;opacity:.75}.photo-ph .cap{font-size:13px;font-weight:600;color:var(--ink)}.photo-ph .sub{font-size:11.5px}.photos-note{margin-top:14px;font-size:12.5px;color:var(--ink-soft)}.certs{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.cert{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:18px 18px 16px}.cert .n{font-weight:700;font-size:15px}.cert .d{font-size:12.5px;color:var(--ink-soft);margin-top:5px}.quality-note{margin-top:26px;padding:16px 20px;background:var(--surface-tint);border-left:3px solid var(--teal);font-size:14.5px;max-width:56em}.cert-docs{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:26px}.doc-ph{position:relative;aspect-ratio:3/4;border-radius:4px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);padding:14px 12px;display:flex;flex-direction:column;gap:6px;overflow:hidden}.doc-ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.doc-ph:before{content:"";height:8px;border-radius:2px;width:62%;background:color-mix(in srgb,var(--ink) 78%,transparent)}.doc-ph:after{content:"";position:absolute;right:12px;bottom:12px;width:42px;height:42px;border-radius:50%;border:2.5px solid rgba(176,58,46,.7);opacity:.65;transform:rotate(-12deg)}.doc-ph .lines{display:flex;flex-direction:column;gap:5px;margin-top:4px}.doc-ph .lines span{height:4px;border-radius:2px;background:var(--line);display:block}.doc-ph .lines span:nth-child(2){width:84%}.doc-ph .lines span:nth-child(3){width:68%}.doc-ph .doc-name{margin-top:auto;font-size:12.5px;font-weight:700}.doc-ph .doc-sub{font-size:11px;color:var(--ink-soft)}.logi{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}.logi table{width:100%;border-collapse:collapse;font-size:14px}.logi th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.14em;color:var(--ink-soft);font-weight:700;padding:0 2px 10px;border-bottom:2px solid var(--ink)}.logi td{padding:10px 2px;border-bottom:1px solid var(--line);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.markets h3{font-size:15px;margin:0 0 14px}.market-chips{display:flex;flex-wrap:wrap;gap:8px}.chip{font-size:13px;border:1px solid var(--line);background:var(--surface);padding:5px 13px;border-radius:999px}.chip,.markets p{color:var(--ink-soft)}.markets p{font-size:13.5px;margin-top:18px}.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}.about-grid .serif{font-size:16.5px;line-height:1.75}.about-grid .serif p{margin:0 0 1em}.facts{display:grid;grid-template-columns:1fr 1fr;gap:16px}.fact{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:16px 18px}.fact .v{font-size:22px;font-weight:750;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.fact .k{font-size:12.5px;color:var(--ink-soft);margin-top:3px}.profile{margin-top:44px}.profile h3{font-size:16px;margin:0 0 14px;letter-spacing:.02em}.profile table{width:100%;border-collapse:collapse;font-size:14px;background:var(--surface);border:1px solid var(--line);border-radius:6px;overflow:hidden}.profile th{text-align:left;font-weight:700;font-size:12.5px;letter-spacing:.05em;color:var(--ink-soft);background:var(--surface-tint);width:220px;vertical-align:top}.profile td,.profile th{padding:10px 16px;border-bottom:1px solid var(--line)}.profile tr:last-child td,.profile tr:last-child th{border-bottom:none}.inquiry{background:var(--surface-tint);border-top:1px solid var(--line)}.inq-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px}.inq-copy p{color:var(--ink-soft);font-size:15px}.inq-copy .direct{margin-top:22px;font-size:14.5px}form.inq{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:26px;display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:5px}.field.full{grid-column:1/-1}.field label{font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--ink-soft)}.field input,.field select,.field textarea{font:inherit;font-size:14px;color:var(--ink);background:var(--ground);border:1px solid var(--line);border-radius:4px;padding:9px 12px}.field textarea{resize:vertical;min-height:92px}.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--teal);outline-offset:0;border-color:var(--teal)}form.inq .btn{grid-column:1/-1;justify-self:start}.form-note{grid-column:1/-1;font-size:12px;color:var(--ink-soft)}.form-ok{grid-column:1/-1;border-left:3px solid var(--good);background:var(--surface-tint);border-radius:4px;padding:12px 16px;font-size:14px}footer.site{border-top:1px solid var(--line);padding:34px 0 40px;font-size:13px;color:var(--ink-soft)}.foot-grid{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.foot-grid .col{display:flex;flex-direction:column;gap:4px}.foot-grid b{color:var(--ink);font-size:13.5px}.wa-float{position:fixed;right:22px;bottom:22px;z-index:40;display:flex;align-items:center;gap:10px;background:#25D366;color:#fff;text-decoration:none;padding:12px 18px 12px 14px;border-radius:999px;font-weight:700;font-size:14px;box-shadow:0 10px 26px -8px rgba(18,100,60,.55);opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .25s ease,transform .25s ease}.wa-float[data-visible=true]{opacity:1;transform:none;pointer-events:auto}@media (prefers-reduced-motion:reduce){.wa-float{transition:none}}.wa-float:hover{filter:brightness(1.06)}.wa-float:focus-visible{outline:3px solid var(--teal);outline-offset:2px}.wa-float svg{display:block}.crumbs{font-size:13px;color:var(--ink-soft);padding:18px 0 0}.crumbs a{text-decoration:none}.crumbs a:hover{color:var(--teal)}@media (max-width:880px){.about-grid,.grade-cols,.hero-inner,.inq-grid,.logi,.verify-grid{grid-template-columns:1fr}.hero-inner{padding-top:48px;padding-bottom:36px;gap:32px}.hero p.lede{margin-top:14px}.hero-ctas{margin-top:22px;flex-direction:column}.hero-ctas .btn{text-align:center}.hero-meta{margin-top:26px;gap:20px}.hero-stats{grid-template-columns:1fr 1fr;padding:14px 0 20px}.coa{justify-self:stretch;max-width:none}.products{grid-template-columns:1fr}.cert-docs,.certs,.photos{grid-template-columns:1fr 1fr}nav.main{display:none}.profile th{width:140px}}@media (max-width:560px){.certs,form.inq{grid-template-columns:1fr}.cert-docs,.photos{grid-template-columns:1fr 1fr}.wa-float span.txt{display:none}.wa-float{padding:13px}}