@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--red:#db251c;--ink:#19232b;--muted:#66717a;--line:#dfe3e6;--pale:#f4f6f7;--blue:#008dcc}*{box-sizing:border-box}body{margin:0;color:var(--ink);font:16px/1.65 'DM Sans',Arial,sans-serif}h1,h2,h3,.brand{font-family:Manrope,Arial,sans-serif;line-height:1.15}h1{font-size:clamp(2.7rem,5.3vw,5rem);letter-spacing:-.055em;margin:20px 0 24px}h2{font-size:clamp(2rem,3.4vw,3.1rem);letter-spacing:-.045em;margin:12px 0 24px}h3{font-size:1.45rem;margin:12px 0}p{color:var(--muted);max-width:670px}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.wrap{max-width:1280px;margin:auto;padding:0 40px}header{background:white;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.nav{height:88px;display:flex;align-items:center;gap:32px}.brand{display:flex;align-items:center;font-size:1.45rem;font-weight:800;letter-spacing:-.04em;gap:12px;white-space:nowrap}.brand img{width:43px;height:43px;object-fit:contain}nav{display:flex;align-items:center;gap:26px;margin-left:auto;font-size:14px;font-weight:600}nav a:hover,nav a[aria-current]{color:var(--red)}.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--red);color:white;padding:13px 22px;font-size:14px;font-weight:700;border:1px solid var(--red);border-radius:3px;cursor:pointer;min-height:48px}.btn:hover{background:#b71d16}.btn.secondary{background:white;color:var(--ink);border-color:var(--line)}.buttons{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--red);text-transform:uppercase}.hero{display:grid;grid-template-columns:1fr 1fr;min-height:630px;align-items:center;gap:25px;padding-top:58px;padding-bottom:65px}.hero p{font-size:18px}.hero-media{position:relative;background:white;min-width:0}.hero-media img{width:100%;object-fit:contain}.hero-label{border-top:1px solid var(--line);padding:16px 0;display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}.strip{background:var(--ink);color:white}.strip .wrap{display:grid;grid-template-columns:repeat(3,1fr);padding-top:23px;padding-bottom:23px;gap:30px;font-size:14px}.strip span{color:#adb8c0;display:block;font-size:13px;margin-top:3px}.section{padding-top:90px;padding-bottom:90px}.pale{background:var(--pale)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:35px}.section-head h2{max-width:690px}.text-link{font-size:14px;font-weight:700;border-bottom:1px solid var(--ink);padding-bottom:4px;white-space:nowrap}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.card{border:1px solid var(--line);background:white;border-radius:5px;overflow:hidden}.card:hover{border-color:#aeb5bb}.card img{width:100%;height:270px;object-fit:contain;background:white}.card .photo{object-fit:cover}.card-body{padding:25px}.card-body p{font-size:15px}.tag{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}.specs{display:grid;grid-template-columns:1fr 1fr;gap:14px;border-top:1px solid var(--line);padding-top:18px;margin:20px 0;font-size:14px}.specs small{display:block;color:var(--muted)}.split{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.split>img{width:100%;height:470px;object-fit:cover;border-radius:5px}.steps{counter-reset:steps;display:grid;grid-template-columns:repeat(4,1fr);gap:30px}.step{border-top:1px solid var(--line);padding-top:20px}.step:before{counter-increment:steps;content:'0' counter(steps);font-size:14px;color:var(--red);font-weight:700}.step p{font-size:15px}.cta{background:var(--ink);color:white;padding:55px;border-radius:5px;display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{font-size:2.3rem;margin:0 0 12px}.cta p{color:#bac5ce;margin:0}.page-head{padding-top:65px;padding-bottom:40px}.page-head h1{font-size:clamp(2.5rem,4vw,4rem);max-width:920px}.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:30px}.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}.filter{background:white;border:1px solid var(--line);padding:10px 16px;border-radius:3px;cursor:pointer;font:inherit;font-size:14px}.filter.active{background:var(--ink);color:white;border-color:var(--ink)}.toolbar{display:flex;gap:12px;margin-bottom:28px}.toolbar input{max-width:520px}.product-hero{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.product-hero img{max-height:500px;object-fit:contain;width:100%}table{width:100%;border-collapse:collapse;font-size:14px;text-align:left}th{background:var(--pale);font-weight:600}td,th{padding:16px 18px;border-bottom:1px solid var(--line)}.table-wrap{overflow:auto}.note{font-size:14px;color:var(--muted);border-left:3px solid var(--blue);padding:12px 20px;background:var(--pale);margin:24px 0}.stat{font:700 3.5rem/1.2 Manrope,sans-serif;color:var(--red)}.case{padding:36px;background:var(--pale);border:1px solid var(--line)}.case ul,ul.checks{padding-left:20px;color:var(--muted)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}label{font-size:14px;font-weight:600;display:block}input,select,textarea{display:block;width:100%;margin-top:8px;padding:13px 14px;border:1px solid #c8ced3;border-radius:3px;font:inherit;background:white;color:var(--ink)}input:focus,select:focus,textarea:focus{outline:2px solid var(--blue);outline-offset:2px}.full{grid-column:1/-1}textarea{min-height:140px}.contact-box{padding:30px;background:var(--pale);align-self:start}.contact-box a{overflow-wrap:anywhere}.contact-box h3{margin-top:0}.faq{border-bottom:1px solid var(--line);padding:20px 0}.faq summary{cursor:pointer;font-weight:600}.faq p{font-size:15px}.notice{background:#eef6fa;padding:20px;margin-top:24px}.notice a{text-decoration:underline}footer{padding:55px 0 25px;border-top:1px solid var(--line);margin-top:80px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:60px}footer p,footer a{font-size:14px}footer a{display:block;margin-bottom:9px}footer .brand{display:flex;font-size:1.4rem}.copyright{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.menu{display:none}a:focus-visible,button:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.empty{padding:40px;text-align:center;background:var(--pale)}@media(max-width:1000px){nav{gap:14px}.wrap{padding-left:24px;padding-right:24px}.nav{gap:15px}nav a{font-size:12px}.split{gap:35px}.grid3{grid-template-columns:repeat(2,1fr)}}@media(max-width:760px){.nav{height:74px;flex-wrap:wrap}.menu{display:block;margin-left:auto;background:white;border:1px solid var(--line);padding:9px 12px;font-size:14px}nav{display:none;position:absolute;top:74px;left:0;right:0;background:white;padding:20px;box-shadow:0 8px 12px #0001;flex-direction:column;align-items:stretch}nav.open{display:flex}nav a{font-size:16px}.hero,.split,.product-hero{grid-template-columns:1fr;gap:25px}.hero{padding-top:40px;padding-bottom:40px;min-height:0}.hero-media img{max-height:340px}.strip .wrap{grid-template-columns:1fr;gap:15px}.section{padding-top:55px;padding-bottom:55px}.grid2,.grid3,.steps,.footer-grid,.form-grid{grid-template-columns:1fr}.section-head{display:block}.card img{height:260px}.split>img{height:320px}.cta{padding:30px;display:block}.cta .btn{margin-top:25px}.copyright{gap:20px;flex-wrap:wrap}.page-head{padding-top:40px}.full{grid-column:auto}.toolbar{flex-direction:column}.steps{gap:20px}}
[hidden]{display:none!important}

/* Chinese review edition: ST MOTOR red and white identity. */
:root{--red:#dc241b;--ink:#282828;--muted:#6a6665;--line:#e7dedb;--pale:#fff7f5;--blue:#dc241b}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;line-height:1.8}
h1,h2,h3,.brand{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;letter-spacing:0;line-height:1.4}
h1{font-size:clamp(2.25rem,3.6vw,3.4rem);font-weight:700;letter-spacing:-.02em}
.hero h1 span{color:var(--red)}
h2{font-size:clamp(1.9rem,2.9vw,2.8rem)}
.eyebrow,.tag{letter-spacing:.06em}
.strip{background:var(--red);color:white}
.strip span{color:#fff0ed}
.cta{background:#fff4f0;color:var(--ink);border:1px solid #f0cec6;border-top:3px solid var(--red)}
.cta p{color:var(--muted)}
.filter.active{background:var(--red);border-color:var(--red)}
.filter:hover{border-color:var(--red)}
.text-link{border-color:var(--red);color:var(--red)}
.hero-media{overflow:hidden}
.hero-media img{height:460px;object-fit:cover;transform:scale(1.35)}
.hero-label{position:relative;background:white;z-index:1}
.notice{background:#fff1eb}
.card:hover{border-color:#e5958e}
footer{border-top:3px solid var(--red)}
@media(max-width:760px){.hero-media img{height:330px}.hero h1{font-size:2.2rem}.nav nav a{font-size:16px}.cta h2{font-size:1.9rem}}