:root{color-scheme:light;--ink:#172f43;--blue:#0b4c73;--muted:#566b7a;--line:#d9e3eb;--snow:#f3f7fa;--accent:#c9f52c;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px}*{box-sizing:border-box}body{margin:0;background:#fff;color:var(--ink);line-height:1.85}a{color:var(--blue)}.skip-link{position:absolute;left:16px;top:-100px;padding:10px;background:white;z-index:2}.skip-link:focus{top:12px}.masthead{border-bottom:1px solid var(--line);padding:20px 32px;max-width:1200px;margin:auto}.brand{display:flex;align-items:center;font-size:1.5rem;letter-spacing:-.06em;font-weight:850;color:#103f5c;line-height:1.3}.brand-home>span{font-weight:550}.brand-rule{height:24px;width:1px;background:#cbd6dc;margin:0 20px}.brand .brand-label{font-size:.875rem;font-weight:500;letter-spacing:.08em;color:var(--muted)}main{max-width:1200px;margin:auto}.hero{display:grid;grid-template-columns:42% 58%;align-items:center;padding:32px;gap:0;background:linear-gradient(120deg,#eef6fb,#fff 68%)}.hero-copy{padding:12px 24px 12px 0}.eyebrow{font-size:.875rem;font-weight:700;letter-spacing:.18em;color:#38617c;margin:0 0 14px}h1{font-size:clamp(1.85rem,3.4vw,2.6rem);line-height:1.4;letter-spacing:-.035em;margin:0;font-weight:750}.title-line{height:4px;width:58px;background:var(--accent);margin-top:26px}.cover{display:block;width:100%;height:auto;border-radius:3px}.reading{max-width:980px;margin:0 auto;padding:0 30px}.intro{padding:28px 0 26px;font-size:1rem}.intro>p:nth-child(2){border-left:3px solid var(--blue);padding:12px 18px;background:#f0f6fa;font-weight:650}.intro>p:last-child{color:var(--muted);font-size:.875rem;margin-bottom:0}p{margin:.75em 0}details{border:1px solid var(--line);margin:0 0 14px;border-radius:5px;overflow:hidden;background:white}summary{list-style:none;display:flex;gap:16px;align-items:center;padding:22px 24px;cursor:pointer;background:#f3f7fa;user-select:none}summary::-webkit-details-marker{display:none}summary:hover{background:#eaf2f8}summary:focus-visible,.table-wrap:focus-visible{outline:3px solid #1397ca;outline-offset:-3px}details[open] summary{background:#0b4c73;color:#fff}h2{font-size:1.1rem;line-height:1.65;margin:0;font-weight:650;flex:1}.section-number{font-size:.875rem;letter-spacing:.06em;font-weight:600;color:#7690a4;font-variant-numeric:tabular-nums}details[open] .section-number{color:#bedde9}.plus{position:relative;flex:0 0 18px;height:18px}.plus:before,.plus:after{content:"";display:block;position:absolute;background:currentColor;top:8px;left:2px;width:14px;height:2px}.plus:after{transform:rotate(90deg)}details[open] .plus:after{transform:rotate(0)}.section-body{padding:20px 30px 30px}.section-body>p:first-child{margin-top:0}h3{font-size:1.15rem;margin:15px 0 12px;color:var(--blue)}h4{font-size:1rem;margin:0 0 14px;color:var(--blue)}strong{font-weight:650}.inset{margin:28px 0;padding:22px;background:#f5f8fb;border-left:3px solid #8eafc8;border-radius:0 4px 4px 0}.inset p:last-child{margin-bottom:0}.table-wrap{overflow-x:auto;margin:17px 0 24px;overscroll-behavior-x:contain;border:1px solid var(--line);border-radius:3px}table{width:100%;border-collapse:collapse;text-align:left;font-size:1rem;line-height:1.7}th,td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top}thead th{background:#eaf2f7;color:#184665;font-size:.9rem;font-weight:650}tbody th{font-weight:400}tr:last-child th,tr:last-child td{border-bottom:0}tbody tr:nth-child(even){background:#f8fafc}.prices th:first-child{width:44%}.prices td{white-space:nowrap;font-variant-numeric:tabular-nums;font-weight:600;color:var(--blue)}.prices th:not(:first-child),.prices td{text-align:right}.examples table{min-width:710px}.examples td{white-space:nowrap}.examples th:first-child{min-width:225px}.examples td strong{color:var(--blue)}.note{color:var(--muted);border-left:3px solid #b8cad6;padding-left:16px;margin:22px 0 0}.formula{padding:10px 20px;margin:0 0 22px;background:#eef5fa;border-left:3px solid var(--blue)}ul{padding-left:1.5em}li{margin:10px 0}.section-body>p:has(>strong:only-child){color:var(--blue)}footer{padding:35px 0 42px;border-top:1px solid var(--line);margin-top:35px;display:flex;justify-content:space-between;align-items:center;color:var(--muted);gap:16px;font-size:.8rem;letter-spacing:.08em}footer strong{font-size:1.1rem;letter-spacing:-.04em;color:var(--blue)}
@media(max-width:760px){.masthead{padding:18px 20px}.hero{display:flex;flex-direction:column;padding:25px 20px 20px;align-items:stretch;gap:20px}.hero-copy{padding:0}h1{font-size:1.85rem}.eyebrow{display:none}.title-line{margin-top:17px}.reading{padding:0 16px}.intro{padding:14px 4px 24px}summary{padding:18px 16px;gap:12px}h2{font-size:1rem}.section-number{display:none}.section-body{padding:18px 16px 24px}.inset{padding:17px 14px;margin:22px 0}table{font-size:1rem}th,td{padding:12px 10px}thead th{font-size:.875rem}.prices table{min-width:480px}.inset table{min-width:430px}.table-wrap{margin-bottom:18px}.formula{padding:8px 14px}.cover{border-radius:3px}footer{font-size:.75rem;letter-spacing:.02em}}@media(prefers-reduced-motion:no-preference){summary{transition:background-color .15s}}@media print{.masthead,.skip-link{display:none}.hero{padding:0;grid-template-columns:55% 45%;background:none}.reading{max-width:none;padding:0}.section-body{display:block!important}details::details-content{content-visibility:visible!important;display:block!important}summary{break-after:avoid;background:#edf3f7!important;color:#172f43!important}.plus{display:none}details{break-inside:auto}.table-wrap{overflow:visible}table{min-width:0!important;font-size:10pt}th,td{padding:8px}.inset,.formula{break-inside:avoid}footer{margin:12px 0;padding:12px 0}}

/* Language switch shares the original masthead and responsive layout. */
.masthead{display:flex;align-items:center;justify-content:space-between;gap:18px}html[lang="en"] h1{font-size:clamp(1.8rem,3.2vw,2.5rem);letter-spacing:-.035em;line-height:1.25}html[lang="en"] h2{line-height:1.55}html[lang="en"] .prices th:first-child{width:46%}html[lang="en"] .examples th:first-child{min-width:245px}@media(max-width:520px){.masthead{gap:12px}.brand .brand-label,.brand-rule{display:none}html[lang="en"] .prices table{min-width:540px}}@media print{}

.language-selector{display:inline-flex;align-items:center;gap:4px;padding:4px;border:1px solid #d8e4ee;border-radius:8px;background:#fff;flex-shrink:0;line-height:1.4}.language-selector button{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:8px 14px;border-radius:5px;color:#345f7e;text-decoration:none;font-size:1rem;font-weight:500;white-space:nowrap}.language-selector button:hover{background:#edf4f8}.language-selector button[aria-pressed="true"]{background:#173f5f;color:#fff}.language-selector button:focus-visible{outline:3px solid #78b6df;outline-offset:3px}@media print{.language-selector{display:none}}

.language-selector button{font-family:inherit;border:0;cursor:pointer;background:transparent}

/* Keep the three language choices in their approved order at every width. */
@media(max-width:650px){.masthead{flex-wrap:wrap;gap:12px}.language-selector{width:100%;max-width:360px;margin-left:auto;justify-content:space-between}.language-selector button{flex:1;padding:8px 10px;font-size:.875rem}.brand .brand-label{font-size:.8rem}}

/* Brand link leads to the TXSNOW homepage, with clear hover and keyboard states. */
.brand-home{display:inline-flex;align-items:center;min-height:44px;padding:6px 8px;margin:-6px -8px;border-radius:6px;color:inherit;text-decoration:none;white-space:nowrap;cursor:pointer}
.brand-home:hover,.brand-home:focus-visible{color:#0866b5;background:#eaf4ff;text-decoration:underline;text-underline-offset:.18em;text-decoration-thickness:1.5px}
.brand-home:focus-visible{outline:3px solid #78b6df;outline-offset:3px}
@media(prefers-reduced-motion:no-preference){.brand-home{transition:color .15s,background-color .15s}}