:root{--bg:#020711;--panel:#092b44;--panel2:#061827;--line:#1e4961;--text:#f4fbff;--muted:#b9cada;--cyan:#22d3ee;--red:#ff5e67;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,system-ui,sans-serif;background:radial-gradient(circle at 78% 0,#0b6d7f,#071523 38%,var(--bg));color:var(--text);line-height:1.65;overflow-x:hidden}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}.wrap{max-width:var(--max);margin:auto;padding:0 24px}.top{border-bottom:1px solid var(--line);background:#061221f2;position:sticky;top:0;z-index:20}.bar{min-height:72px;display:flex;justify-content:space-between;align-items:center;gap:18px}.brand{font-size:30px;font-weight:900;letter-spacing:-.045em}.brand span,.c,.link{color:var(--cyan)}.sub,p{color:var(--muted)}.sub{font-size:12px;margin-top:-5px}.nav{display:flex;gap:9px;align-items:center}.nav a,.btn{border:1px solid #2b5269;border-radius:999px;padding:9px 13px;font-weight:850;background:#061827;color:#fff}.nav a:hover,.nav a[aria-current="page"]{border-color:var(--cyan);color:var(--cyan)}.btn,.hot{display:inline-flex;justify-content:center;align-items:center;background:var(--cyan)!important;color:#06202a!important;border:0!important}.hero{padding:42px 0 22px}.eyebrow{color:var(--cyan);font-size:11px;font-weight:900;letter-spacing:.13em;text-transform:uppercase}.hero h1{font-size:clamp(38px,6vw,68px);line-height:1.02;letter-spacing:-.055em;margin:8px 0 14px}.hero p{font-size:17px;max-width:800px;margin:0}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.section{padding:22px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:14px}.section-head h2,.section h2{margin:0}.section-head p{margin:0;max-width:620px}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.grid5{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.card,.box,.product-card,.faq-list,.article-card,.route{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--line);border-radius:18px;padding:18px;margin:0;box-shadow:0 14px 32px #0005}.card h2,.card h3,.product-card h3,.article-card h3,.route h3{margin:0 0 8px}.card p,.product-card p,.article-card p,.route p{margin:5px 0}.route{min-height:145px}.route b{display:block;font-size:18px;margin-bottom:7px}.article-card{display:flex;flex-direction:column;min-height:220px}.article-card .link{margin-top:auto;font-weight:850}.pic{aspect-ratio:4/3;background:#dbe4ea;border-radius:12px;overflow:hidden;margin-bottom:12px}.pic img{width:100%;height:100%;object-fit:cover}.product-card{padding:12px;display:flex;flex-direction:column}.product-card h3{font-size:16px;line-height:1.25}.product-card .meta{font-size:12px;color:#8eb5c2}.product-card .price{font-size:18px;color:var(--cyan);font-weight:900}.product-card .qc{font-size:12px;min-height:58px}.product-card .btn{margin-top:auto;padding:8px 11px;font-size:12px}.search{display:flex;max-width:720px;background:#fff;border-radius:999px;padding:5px;margin-top:18px}.search input{border:0;outline:0;min-width:0;flex:1;padding:11px 15px;font:inherit}.search button{cursor:pointer;border:0;border-radius:999px;background:var(--cyan);color:#05202a;padding:11px 17px;font-weight:900}.box{margin:14px 0}.box p,.box li{font-size:16px}.faq-list{padding:20px}.faq-item{border-bottom:1px solid #244d62}.faq-item:last-child{border-bottom:0}.faq-item summary{cursor:pointer;list-style:none;font-size:18px;font-weight:850;padding:16px 0;display:flex;justify-content:space-between;gap:12px}.faq-item summary:after{content:'+';color:var(--cyan);font-size:24px}.faq-item[open] summary:after{content:'−'}.faq-item p{margin:0 0 17px}.article{max-width:930px;margin:24px auto;background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:32px}.article h1{font-size:clamp(36px,5.5vw,58px);line-height:1.08;margin:8px 0 18px}.article h2{font-size:28px;line-height:1.2;margin:38px 0 12px}.article h3{font-size:21px;margin:24px 0 8px}.article p,.article li{font-size:17px;line-height:1.85;color:#c9f7ff}.article a:not(.btn){color:#72e8f2;text-decoration:underline}.article .meta,.meta{font-size:13px;color:#91bdc7}.disclosure,.formula,.note{background:#073247;border-left:4px solid var(--cyan);border-radius:14px;padding:17px 19px;margin:22px 0}.check{background:#061522;border:1px solid var(--line);border-radius:16px;padding:18px 22px}.sources{border-top:1px solid var(--line);margin-top:34px;padding-top:20px}.sources p,.sources li{font-size:14px;color:#91bdc7}.ledger{width:100%;border-collapse:collapse;margin:20px 0;color:#c9f7ff}.ledger th,.ledger td{border:1px solid #22677a;padding:11px;text-align:left;vertical-align:top}.ledger th{background:#061522;color:#72e8f2}.breadcrumbs{font-size:13px;color:#91bdc7;padding-top:22px}.foot{padding:40px 18px;text-align:center;color:#89a4b8}.foot a{color:var(--cyan)}.ck,.menu,.drawer,.shade{display:none}
@media(max-width:900px){.nav{gap:5px}.nav a{font-size:12px;padding:8px 9px}.grid5{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.wrap{padding:0 12px}.bar{min-height:62px}.brand{font-size:24px}.sub{font-size:10px}.nav{display:none}.menu{display:block;font-size:28px;cursor:pointer}.drawer{display:block;position:fixed;left:0;top:0;width:84%;height:100vh;background:#040816;z-index:50;transition:.25s;padding:16px;border-right:1px solid var(--line);overflow:auto;transform:translateX(-110%)}.drawer a,.drawer label{display:block;padding:15px 6px;border-bottom:1px solid #29394b}.shade{display:none;position:fixed;inset:0;background:#0008;z-index:40}.ck:checked~.shade{display:block}.ck:checked~.drawer{transform:translateX(0)}.hero{padding:28px 0 12px}.hero h1{font-size:32px}.hero p{font-size:14px}.section{padding:15px 0}.section-head{align-items:start;flex-direction:column;gap:4px}.grid2,.grid3{grid-template-columns:1fr}.grid4{grid-template-columns:repeat(2,1fr);gap:8px}.grid5{grid-template-columns:repeat(2,1fr);gap:8px}.card,.route{padding:13px}.route{min-height:108px}.route p{font-size:12px}.product-card{padding:9px}.product-card h3{font-size:13px}.product-card .qc{font-size:11px;min-height:68px}.article-card{min-height:175px;padding:15px}.article{padding:18px;border-radius:18px;margin-top:12px}.article h1{font-size:32px}.article h2{font-size:24px}.article p,.article li{font-size:15px}.ledger{display:block;overflow-x:auto}.ledger th,.ledger td{min-width:145px;padding:9px}.faq-item summary{font-size:16px}.foot{padding-bottom:34px}}
/* Five-language reading and discovery layout, October 2026. */
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Preserve the established dark palette for every added component. */
.language-picker summary,.language-picker nav,.chips a,.toc,.related,.essential-links a,.article th{background:#061827;color:var(--text);border-color:var(--line)}.language-picker a[aria-current=page]{color:var(--cyan)}.nav a[aria-current=page]{background:#103b54;color:var(--cyan)}.answer{background:#073247;border-color:var(--cyan)}.article th{color:#72e8f2}.article th,.article td{border-color:#22677a}.skip{background:#061827;color:#fff}.essential-links a:hover,.chips a:hover{border-color:var(--cyan)}.language-picker a:hover{background:#103b54}.article a,.toc a,.related a{color:#72e8f2}.home-faq .faq-item summary{font-size:15px;padding:11px 0}.home-faq .faq-item p{font-size:14px}.home-faq{padding:12px 18px}