/* =====================================================================
   Handsun Valve — handsunvalve.com
   Single stylesheet. No external fonts, scripts or CDNs (zero network deps).
   Layout reference: 安利特 anlite EN export template (top bar + nav + hero +
   about + product grid + capability + contact + floating contact buttons).
   ===================================================================== */
:root{
  --brand:#0f4c9c; --brand-d:#0a3369; --navy:#0a1a2f; --accent:#ee6a1c; --accent-d:#cf5511;
  --ink:#12212f; --muted:#5f7285; --line:#e3e9f0; --soft:#f4f7fb; --white:#fff;
  --radius:12px; --wrap:1180px; --shadow:0 8px 26px rgba(12,42,80,.08);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--white);color:var(--ink);
  font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px}
.sec{padding:74px 0}
.sec.soft{background:var(--soft)}
.sec.dark{background:var(--navy);color:#e8eef6}
.sec-head{max-width:760px;margin:0 auto 40px;text-align:center}
.sec-head .en{font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.sec-head h2{font-size:32px;line-height:1.3;margin:10px 0 12px;letter-spacing:-.2px}
.sec-head p{margin:0;color:var(--muted)}
.sec.dark .sec-head p{color:#a9bdd6}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 22px;border-radius:8px;
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:.18s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-p{background:var(--accent);color:#fff}
.btn-p:hover{background:var(--accent-d);color:#fff}
.btn-b{background:var(--brand);color:#fff}
.btn-b:hover{background:var(--brand-d);color:#fff}
.btn-g{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-g:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-o{background:transparent;color:var(--brand);border-color:#c9d8ea}
.btn-o:hover{background:#eef4fb;color:var(--brand)}

/* ---------- top bar ---------- */
.top{background:var(--navy);color:#c8d8ea;font-size:13px}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:42px;flex-wrap:wrap}
.top .l{display:flex;gap:20px;flex-wrap:wrap;align-items:center}
.top a{color:#c8d8ea}
.top a:hover{color:#fff;text-decoration:none}
.top .lang{display:flex;gap:8px;align-items:center}
.top .lang a{padding:3px 9px;border-radius:999px;border:1px solid rgba(255,255,255,.22)}
.top .lang a.on{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}

/* ---------- header / nav ---------- */
.hdr{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);
  backdrop-filter:saturate(160%) blur(8px)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:74px}
.logo{display:flex;align-items:center;gap:11px;color:var(--ink)}
.logo:hover{text-decoration:none}
.logo .mk{width:40px;height:40px;border-radius:9px;background:linear-gradient(140deg,var(--brand),#1b74d8);
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;letter-spacing:.02em}
.logo b{display:block;font-size:17px;line-height:1.25;letter-spacing:-.1px}
.logo span{display:block;font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav a{padding:9px 13px;border-radius:7px;color:#26374a;font-size:15px;font-weight:500}
.nav a:hover,.nav a.on{background:#eef3fa;color:var(--brand);text-decoration:none}
.hdr .cta{display:flex;align-items:center;gap:10px}
.mob{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:9px 11px;font-size:18px;line-height:1;cursor:pointer;color:var(--ink)}

/* ---------- hero ---------- */
.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;
  background:radial-gradient(900px 480px at 12% 8%,rgba(31,111,208,.42),transparent 62%),radial-gradient(700px 420px at 92% 88%,rgba(238,106,28,.22),transparent 60%)}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:46px;align-items:center;padding:66px 22px 70px}
.hero .kick{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;letter-spacing:.05em;
  color:#ffd9bd;background:rgba(238,106,28,.16);border:1px solid rgba(238,106,28,.42);padding:6px 13px;border-radius:999px}
.hero h1{font-size:42px;line-height:1.24;margin:18px 0 16px;letter-spacing:-.5px}
.hero h1 em{color:#ffb483;font-style:normal}
.hero p{color:#bcd0e6;font-size:16.5px;margin:0 0 26px;max-width:560px}
.hero .btns{display:flex;gap:12px;flex-wrap:wrap}
.hero .pills{display:flex;gap:18px;flex-wrap:wrap;margin-top:28px;font-size:13.5px;color:#a9c0da}
.hero .pills span:before{content:"✓";color:#6fd08a;margin-right:6px;font-weight:700}
.hero .shots{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.hero .shots .ph{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.18);color:#9fb6d0;aspect-ratio:1/1}

/* ---------- image placeholder ---------- */
.ph{position:relative;border:1px dashed #c7d5e6;border-radius:var(--radius);background:#f8fbfe;
  display:flex;align-items:center;justify-content:center;overflow:hidden;min-height:150px}
.ph img{width:100%;height:100%;object-fit:cover}
.ph .hint{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:6px;text-align:center;padding:14px;font-size:12.5px;color:#8296ac;line-height:1.5}
.ph .hint b{font-size:13px;color:#5f7285;font-weight:600}
.ph .hint code{font-size:11.5px;background:#eef3fa;border-radius:5px;padding:2px 6px;color:#5f7285}
.ph.has img+.hint{display:none}

/* ---------- stat strip ---------- */
.strip{background:linear-gradient(180deg,#0b2440,#0a1a2f);border-top:1px solid rgba(255,255,255,.08)}
.strip .wrap{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;padding:26px 22px}
.strip .it{text-align:center;padding:6px 10px;border-right:1px solid rgba(255,255,255,.14)}
.strip .it:last-child{border-right:0}
.strip .it b{display:block;font-size:23px;font-weight:800;color:#fff;letter-spacing:.2px}
.strip .it b small{font-size:13px;font-weight:600;color:#9fb6d0;margin-left:2px}
.strip .it span{font-size:12.5px;color:#a9c0da}

/* ---------- about ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.split .txt h2{font-size:31px;line-height:1.3;margin:6px 0 16px}
.split .txt .en{font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.split .txt p{color:#3c4d60;margin:0 0 14px}
.split .txt ul{margin:0 0 18px;padding-left:0;list-style:none}
.split .txt li{position:relative;padding:5px 0 5px 26px;color:#2b3c4f}
.split .txt li:before{content:"";position:absolute;left:6px;top:14px;width:7px;height:7px;border-radius:2px;background:var(--brand)}
.split .txt li b{color:var(--ink)}
.split .txt .en-name{font-size:13px;color:var(--muted);margin:-6px 0 14px}
.about-media{position:relative}
.about-media .ph{aspect-ratio:4/3}
.about-badge{position:absolute;left:-14px;bottom:-14px;background:var(--brand);color:#fff;border-radius:12px;
  padding:14px 18px;box-shadow:var(--shadow);text-align:center}
.about-badge b{display:block;font-size:24px;line-height:1.1}
.about-badge span{font-size:12px;color:#cfe0f4}

/* ---------- cards / grids ---------- */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:.18s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.card .ph{border:0;border-bottom:1px dashed #dbe6f2;border-radius:0;background:#fafcfe;aspect-ratio:4/3;min-height:0}
.card .bd{padding:18px 18px 20px;display:flex;flex-direction:column;gap:7px;flex:1}
.card h3{margin:0;font-size:17.5px;letter-spacing:-.1px}
.card .tag{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.card p{margin:0;color:var(--muted);font-size:14.5px}
.card .more{margin-top:auto;padding-top:10px;font-size:14px;font-weight:600}
.why{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.why .ic{width:42px;height:42px;border-radius:10px;background:#eaf1fa;color:var(--brand);display:flex;align-items:center;
  justify-content:center;font-weight:800;margin-bottom:12px}
.why h3{margin:0 0 7px;font-size:17px}
.why p{margin:0;color:var(--muted);font-size:14.5px}

/* ---------- process steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:relative}
.step:before{counter-increment:s;content:counter(s,decimal-leading-zero);position:absolute;right:18px;top:14px;
  font-size:26px;font-weight:800;color:#e8eff8}
.step h4{margin:0 0 8px;font-size:16.5px}
.step p{margin:0;color:var(--muted);font-size:14.5px}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:26px}
.fact{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-align:center}
.fact b{display:block;font-size:16px;color:var(--ink)}
.fact span{font-size:12.5px;color:var(--muted)}

/* ---------- key/value + chips ---------- */
.kv{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.kv:last-of-type{border-bottom:0}
.kv span{color:var(--muted)}
.kv b{color:var(--ink);font-weight:600;text-align:right}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.chip{background:#eef4fb;border:1px solid #d5e3f4;color:var(--brand);font-size:13px;font-weight:600;padding:7px 13px;border-radius:999px}
.sec.dark .chip{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.2);color:#dbe8f6}

/* ---------- contact ---------- */
.c-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.sec.soft .c-box{box-shadow:var(--shadow)}
.c-box h3{margin:0 0 6px;font-size:19px}
.c-box .sub{color:var(--muted);font-size:14px;margin:0 0 16px}
.row{display:flex;gap:16px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.row:last-of-type{border-bottom:0}
.row .lb{flex:0 0 132px;color:var(--muted)}
.row .vl{flex:1;color:#22364a;word-break:break-word}
.c-cta{background:linear-gradient(150deg,var(--brand),#1c6fd0);color:#fff;border:0}
.c-cta h3,.c-cta .sub{color:#fff}
.c-cta .sub{opacity:.86}
.c-cta ul{list-style:none;padding:0;margin:0 0 20px}
.c-cta li{padding:6px 0 6px 24px;position:relative;color:#e9f2fc;font-size:14.5px}
.c-cta li:before{content:"✓";position:absolute;left:0;color:#ffcf9f;font-weight:700}

/* ---------- footer ---------- */
.ft{background:#08182b;color:#9fb6d0;font-size:14px;padding:52px 0 26px}
.ft .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:30px}
.ft h4{color:#fff;font-size:15px;margin:0 0 14px;letter-spacing:.02em}
.ft a{color:#9fb6d0}
.ft a:hover{color:#fff;text-decoration:none}
.ft ul{list-style:none;margin:0;padding:0}
.ft li{padding:5px 0}
.ft .brandline{font-weight:700;color:#fff;font-size:15.5px;margin:0 0 10px}
.ft .fnote{font-size:13px;line-height:1.75}
.ft .bar{border-top:1px solid rgba(255,255,255,.1);margin-top:34px;padding-top:18px;display:flex;
  justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#7e94ae}

/* ---------- floating contact buttons ---------- */
.float{position:fixed;right:16px;bottom:24px;z-index:60;display:flex;flex-direction:column;gap:10px}
.float a{width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:var(--brand);position:relative}
.float a:hover{text-decoration:none;background:var(--brand);color:#fff;border-color:var(--brand)}
.float a.tip:after{content:attr(data-tip);position:absolute;right:56px;top:50%;transform:translateY(-50%);
  background:var(--navy);color:#fff;font-size:12px;font-weight:500;padding:5px 10px;border-radius:6px;white-space:nowrap;
  opacity:0;pointer-events:none;transition:.15s}
.float a.tip:hover:after{opacity:1}
.float a.wa{background:#25d366;border-color:#25d366;color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero .wrap{grid-template-columns:1fr;gap:34px;padding:52px 22px 58px}
  .hero h1{font-size:34px}
  .split{gap:30px}
  .ft .cols{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:900px){
  .sec{padding:54px 0}
  .split{grid-template-columns:1fr}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:1fr}
  .nav{display:none}
  .nav.open{display:flex;flex-direction:column;align-items:stretch;position:absolute;left:0;right:0;top:100%;
    background:#fff;border-bottom:1px solid var(--line);padding:12px 18px 18px;box-shadow:var(--shadow)}
  .mob{display:block}
  .hdr .cta .btn{display:none}
  .hero h1{font-size:30px}
  .strip .wrap{grid-template-columns:repeat(3,1fr)}
  .strip .it{border-right:0}
}
@media (max-width:640px){
  .top .mob-hide{display:none}
  .sec-head h2,.split .txt h2{font-size:25px}
  .hero h1{font-size:26px}
  .g2,.g3{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr}
  .strip .wrap{grid-template-columns:repeat(2,1fr);gap:4px}
  .strip .it b{font-size:19px}
  .ft .cols{grid-template-columns:1fr}
  .row{flex-direction:column;gap:2px}
  .row .lb{flex:none;font-size:13px}
  .float{right:10px;bottom:14px;gap:8px}
  .float a{width:42px;height:42px;font-size:12px}
}

/* 工厂实力板块右侧图：拉满整列高度，避免右侧留大片空白 */
.split .media-tall{align-self:stretch}
.split .media-tall .ph{aspect-ratio:auto;height:100%;min-height:400px}

/* 页头 logo 圆形标记（2026-09-29 换用公司 logo） */
.logo .mkimg{width:40px;height:40px;object-fit:contain;display:block;flex:none}
@media(max-width:640px){.logo .mkimg{width:32px;height:32px}}

/* ---------- spec / dimension tables (refrigeration valve section) ---------- */
#refrigeration .tbl-h{font-size:18px;margin:38px 0 14px;letter-spacing:-.1px;
  padding-bottom:8px;border-bottom:1px solid var(--line)}
#refrigeration .tbl-h:first-of-type{margin-top:6px}
#refrigeration .tbl-sub-h{font-size:14.5px;margin:22px 0 10px;color:var(--brand);font-weight:700}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);
  border-radius:var(--radius);background:#fff}
.tablewrap+.tbl-sub-h{margin-top:26px}
.spec-table{width:100%;border-collapse:collapse;font-size:14px;min-width:660px}
.spec-table th{background:var(--soft);color:#2b3c4f;font-weight:700;text-align:left;
  padding:10px 13px;border-bottom:1px solid var(--line);white-space:nowrap}
.spec-table td{padding:9px 13px;border-bottom:1px solid var(--line);color:#33475c;white-space:nowrap}
.spec-table tbody tr:nth-child(even){background:#fafcfe}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table td:first-child{font-weight:600;color:var(--ink)}
.src-note{margin:22px 0 0;font-size:12.5px;color:var(--muted)}
.cta-line{margin-top:26px}