:root{--bg: #eef1ee;--surface: rgba(255, 255, 255, .82);--surface-strong: #fcfdfb;--ink: #17212b;--muted: #5f6972;--text-soft: #6d7881;--line: rgba(23, 33, 43, .1);--navy: #0f2533;--teal: #1a6970;--amber: #c46b3b;--slate: #52616d;--shadow: 0 24px 70px rgba(15, 37, 51, .1);--shadow-soft: 0 12px 34px rgba(15, 37, 51, .08)}*{box-sizing:border-box}body{margin:0;color:var(--ink);font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,SimHei,sans-serif;background:radial-gradient(circle at top left,rgba(196,107,59,.12),transparent 24%),radial-gradient(circle at top right,rgba(26,105,112,.08),transparent 18%),linear-gradient(180deg,#f5f7f4,#edf0eb 52%,#e8ece8)}html{scroll-behavior:smooth}body.modal-open{overflow:hidden}a{color:inherit;text-decoration:none}.app-shell{width:min(1200px,calc(100% - 40px));margin:0 auto;padding-bottom:40px;position:relative}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:16px;padding:14px 18px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(16,48,64,.08);border-radius:22px;background:#ffffffb3;box-shadow:var(--shadow-soft)}.brand{display:inline-flex;align-items:center;gap:14px}.brand-logo{display:block;width:min(420px,50vw);height:auto}.brand strong,.site-footer strong{display:block;font-size:1rem}.brand em{display:block;margin-top:3px;font-style:normal;font-size:.74rem;color:var(--muted)}.main-nav{display:flex;align-items:center;gap:8px;font-size:.95rem;padding:6px;border-radius:999px;background:#0f25330a}.main-nav a{color:var(--muted);font-weight:700;padding:10px 14px;border-radius:999px;transition:background .16s ease,color .16s ease,transform .16s ease}.main-nav a:hover{color:var(--navy);background:#ffffffb3}.main-nav a.active{color:#fff;background:linear-gradient(135deg,var(--navy),rgba(26,105,112,.94))}.lang-switch,.button{border:0;cursor:pointer;border-radius:999px;padding:12px 18px;font:inherit;font-weight:700}.lang-switch{background:linear-gradient(180deg,#fffffff5,#f6f8f7db);border:1px solid var(--line);box-shadow:inset 0 1px #fffc}.hero{display:grid;grid-template-columns:1.08fr .92fr;gap:16px;align-items:center;min-height:calc(100vh - 120px);padding-top:20px}.hero-copy{display:grid;gap:0;align-content:center;padding-right:4px}.hero-kicker{margin:0 0 12px;display:inline-flex;align-items:center;width:fit-content;padding:8px 14px;border-radius:999px;background:#0f25330f;color:var(--navy);font-size:.82rem;font-weight:700;letter-spacing:.08em}.hero-copy h1,.section-head h1,.section-head h2,.detail-hero h1{margin:0;font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,SimHei,sans-serif;font-weight:800;line-height:1.16;letter-spacing:-.02em}.hero-copy h1{max-width:13ch;font-size:clamp(1.95rem,4.1vw,3.4rem);line-height:1.28;margin-bottom:14px;letter-spacing:-.03em}.hero-summary{max-width:50ch;font-size:.9rem;line-height:1.9;color:var(--text-soft);margin:0}.hero-copy p,.section-head p,.card p,.timeline-item p,.site-footer p,.contact-mini p{color:var(--muted);line-height:1.75}.about-block p{white-space:pre-wrap}.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}.button.primary{background:linear-gradient(135deg,var(--navy),rgba(26,105,112,.94));color:#fff;box-shadow:0 12px 24px #0f25332e}.button.ghost{background:#ffffffb8;border:1px solid var(--line)}.hero-panel,.card,.timeline-item,.contact-mini,.site-footer,.detail-hero{border:1px solid var(--line);box-shadow:var(--shadow)}.hero-panel{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:20px;border-radius:30px;background:linear-gradient(180deg,#ffffff9e,#f4f8f7b8),linear-gradient(135deg,#0f25330f,#1a69700a)}.hero-panel-head{grid-column:span 2;display:grid;gap:6px;padding:2px 2px 8px}.hero-panel-head strong{color:var(--navy);font-size:1rem;letter-spacing:.04em}.hero-panel-head p{margin:0;color:var(--text-soft);font-size:.88rem;line-height:1.75}.metric-card,.card,.contact-mini{padding:24px;border-radius:24px;background:#ffffffdb;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.card{transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.card:hover{transform:translateY(-4px);box-shadow:0 28px 62px #0f25331f;border-color:#1a697029}.metric-card{min-height:150px;position:relative;overflow:hidden;align-content:start}.metric-card span{display:block;margin-bottom:10px;font-size:1.56rem;font-weight:700;color:var(--navy)}.metric-card p{margin:0;font-size:.9rem;line-height:1.75}.metric-card.wide{grid-column:span 2;background:linear-gradient(135deg,#0f2533f2,#1c6c71e0)}.metric-card:after{content:"";position:absolute;inset:auto -24px -28px auto;width:120px;height:120px;border-radius:999px;background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%)}.metric-card.wide span,.metric-card.wide p{color:#fff}.section,.page-shell{padding:72px 0 8px}.alt{position:relative}.alt:before{content:"";position:absolute;top:30px;right:-32px;bottom:0;left:-32px;border-radius:32px;background:#ffffff80;z-index:-1}.section-head{max-width:820px;margin-bottom:24px}.section-head h1,.section-head h2,.detail-hero h1{font-size:clamp(2rem,4vw,3.7rem)}.section-head.compact{margin-bottom:18px}.eyebrow{margin:0 0 14px;text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:700;color:var(--amber)}.card-grid{display:grid;gap:18px}.card-grid.three{grid-template-columns:repeat(3,1fr)}.card-grid.two{grid-template-columns:repeat(2,1fr)}.card h3,.timeline-item h3{margin:0 0 12px;font-size:1.1rem;line-height:1.5}.product-card{transition:transform .18s ease,border-color .18s ease}.product-card:hover{transform:translateY(-4px)}.product-card.amber{background:linear-gradient(180deg,#fff8f1f2,#ffffffd1)}.product-card.teal{background:linear-gradient(180deg,#f0fbfaf2,#ffffffd1)}.product-card.slate{background:linear-gradient(180deg,#f5f7faf2,#ffffffd1)}.category-hero-card{min-height:220px;background:linear-gradient(180deg,#fffffff5,#f3f7f5e6);position:relative;overflow:hidden}.category-hero-card:after{content:"";position:absolute;right:-28px;bottom:-40px;width:160px;height:160px;border-radius:28px;background:linear-gradient(135deg,#0f253314,#1a69700a);transform:rotate(14deg)}.category-mark{display:inline-flex;align-items:center;justify-content:center;width:68px;height:34px;border-radius:999px;background:#10304014;color:var(--navy);font-size:.82rem;font-weight:800;letter-spacing:.12em}.detail-link{display:inline-block;margin-top:16px;font-weight:700;color:var(--amber)}.category-hero-card p,.mixed-gas-card p,.timeline-item p,.card p{margin:0}.mixed-gas-card h3{min-height:3em}.mixed-gas-card .detail-link{margin-top:auto}.timeline{display:grid;gap:16px}.timeline-item{display:grid;grid-template-columns:72px 1fr;gap:18px;align-items:start;padding:22px;border-radius:24px;background:linear-gradient(180deg,#ffffffe6,#f6f8f7d1)}.timeline-item span{display:grid;place-items:center;width:72px;height:72px;border-radius:18px;background:var(--navy);color:#fff;font-weight:700}.timeline-item strong,.case-card strong{display:block;margin-top:10px}.news-date{margin:0 0 10px;font-size:.84rem;letter-spacing:.08em;color:var(--amber);font-weight:700}.about-block,.contact-layout,.detail-grid{display:grid;grid-template-columns:1fr .9fr;gap:18px}.detail-grid-secondary{margin-top:18px}.detail-section-stack{display:grid;gap:18px;margin-top:18px}.detail-section-card{display:grid;gap:14px}.spec-table{display:grid;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#ffffffc7}.spec-row{display:grid;grid-template-columns:180px 1fr;border-bottom:1px solid var(--line)}.spec-row:last-child{border-bottom:0}.spec-label,.spec-value{padding:14px 16px}.spec-label{background:#0f25330d;font-weight:700;color:var(--navy)}.spec-value{line-height:1.7}.application-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.application-card{display:grid;gap:12px;align-content:start;padding:18px;border-radius:18px;border:1px solid var(--line);background:linear-gradient(180deg,#ffffffe6,#f5f8fac7)}.application-icon{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;background:#0f253314;color:var(--navy);font-weight:800;letter-spacing:.08em}.application-card p{margin:0;line-height:1.75}.detail-figure{display:grid;gap:12px;padding:12px;border-radius:22px;border:1px solid var(--line);background:linear-gradient(180deg,#fffffff0,#f4f7f9d6)}.detail-figure-caption{display:grid;gap:8px;padding:2px 4px 0}.detail-figure-caption strong{font-size:1rem;color:var(--navy)}.detail-figure-caption p{margin:0;line-height:1.75;color:var(--text-soft)}.contact-mini{align-self:start}.back-link{display:inline-block;margin-bottom:18px;color:var(--amber);font-weight:700}.detail-hero{padding:30px;border-radius:30px;background:linear-gradient(135deg,#0f2533f2,#1c6c71e6);color:#fff}.detail-hero.amber{background:linear-gradient(135deg,#9d441cf2,#0f2533e0)}.detail-hero.teal{background:linear-gradient(135deg,#0c494df2,#0f2533e0)}.detail-hero.slate{background:linear-gradient(135deg,#364351f2,#0f2533e0)}.detail-hero p,.detail-hero .eyebrow{color:#ffffffdb}.bullet-list{margin:0;padding-left:18px;line-height:1.8}.case-list{display:grid;gap:18px}.mixed-gas-section{padding-top:56px}.mixed-gas-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.product-center-grid{margin-top:18px}.architecture-layout{display:grid;grid-template-columns:280px 1fr;gap:24px;align-items:start}.architecture-sidebar{position:sticky;top:92px}.sidebar-card{padding:22px;border-radius:24px;background:linear-gradient(180deg,#103040fa,#163a4cf0);border:1px solid var(--line);box-shadow:var(--shadow)}.sidebar-link{display:block;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.14);font-weight:700;color:#ffffffe6}.sidebar-link:last-child{border-bottom:0}.sidebar-card .eyebrow{color:#ffffffb8}.architecture-content{display:grid;gap:22px}.architecture-section{scroll-margin-top:100px;padding:24px;border-radius:28px;background:#ffffff8a;border:1px solid rgba(15,37,51,.06);box-shadow:var(--shadow-soft)}.category-strip{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}.category-chip{padding:10px 14px;border-radius:999px;background:#ffffffb8;border:1px solid var(--line);color:var(--navy);font-weight:600;font-size:.92rem}.mixed-gas-card{display:grid;gap:10px;align-content:start;min-height:0;background:linear-gradient(180deg,#fffffff2,#f5f8f7db)}.product-trigger{width:100%;border:1px solid var(--line);text-align:left;font:inherit;cursor:pointer}.mixed-gas-thumb,.mixed-gas-detail-thumb{display:grid;place-items:center;border-radius:18px;min-height:128px;background:linear-gradient(180deg,#f7f9f8,#eef2f1);overflow:hidden;border:1px solid var(--line)}.mixed-gas-thumb img,.mixed-gas-detail-thumb img{width:100%;height:100%;object-fit:cover;display:block}.mixed-gas-detail-thumb{min-height:300px}.thumb-placeholder{padding:0 20px;text-align:center;font-size:1rem;font-weight:700;letter-spacing:.06em;color:var(--navy)}.mixed-gas-index{font-size:.82rem;font-weight:700;letter-spacing:.1em;color:var(--amber)}.contact-panel,.contact-form{display:grid;gap:12px}.contact-form label{display:grid;gap:8px}.contact-form input,.contact-form textarea{width:100%;padding:12px 14px;border-radius:14px;border:1px solid var(--line);background:#ffffffc7;font:inherit}.site-footer{margin-top:64px;padding:26px 28px;border-radius:28px;display:grid;grid-template-columns:1fr 1fr;gap:24px;background:linear-gradient(180deg,#ffffffbd,#f2f6f4b8),linear-gradient(135deg,#0f25330a,#1a697008)}.product-modal{width:min(1120px,calc(100% - 32px));max-width:none;padding:0;border:0;border-radius:28px;background:transparent}.product-modal::backdrop{background:#0f25338c;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.product-modal-shell{position:relative;padding:24px;border-radius:28px;background:linear-gradient(180deg,#f7faf8,#eef3f0);box-shadow:0 30px 90px #0f253342}.product-modal-close{position:absolute;top:18px;right:18px;width:42px;height:42px;border:0;border-radius:999px;background:#0f253314;color:var(--navy);font:inherit;font-size:1.6rem;line-height:1;cursor:pointer}.product-modal-body{display:grid;gap:18px}.footer-logo{display:block;width:min(360px,100%);height:auto;margin-bottom:8px}@media (max-width: 960px){.main-nav{display:none}.product-modal{width:min(100% - 18px,1120px)}.hero-panel-head{grid-column:span 1}.application-grid,.spec-row,.hero,.card-grid.three,.card-grid.two,.mixed-gas-grid,.architecture-layout,.about-block,.contact-layout,.detail-grid,.site-footer{grid-template-columns:1fr}.architecture-sidebar{position:static}}@media (max-width: 720px){.app-shell{width:min(100% - 22px,1200px)}.hero{min-height:auto;padding-top:22px}.topbar{padding:12px 14px;border-radius:18px}.brand-logo{width:min(290px,74vw)}.hero-copy h1{max-width:none;font-size:2.1rem}.hero-panel{grid-template-columns:1fr}.metric-card.wide{grid-column:span 1}.timeline-item{grid-template-columns:1fr}.timeline-item span{width:56px;height:56px}.alt:before{top:22px;right:-8px;bottom:0;left:-8px}}