/* =========================================================
   Modern Dragon Industrial Co., Limited — corporate site
   Pure static CSS · original work · no external dependencies
   ========================================================= */
:root{
  --ink:#0b1220; --ink-2:#1c2637; --muted:#5b6b82; --muted-2:#8494ab;
  --bg:#ffffff; --bg-soft:#f6f8fc; --bg-soft-2:#eef3fa;
  --line:#e6ebf3; --line-2:#d8e0ec;
  --brand:#2563eb; --brand-dark:#1d4ed8; --brand-soft:#e8efff; --accent:#06b6d4;
  --ok:#10b981;
  --radius:16px; --radius-sm:10px; --radius-lg:24px;
  --shadow-sm:0 2px 10px rgba(11,18,32,.06);
  --shadow:0 12px 32px rgba(11,18,32,.10);
  --shadow-lg:0 28px 60px rgba(11,18,32,.16);
  --maxw:1180px;
  --font:'Inter','Segoe UI',-apple-system,BlinkMacSystemFont,Roboto,Helvetica,Arial,'PingFang SC','Microsoft YaHei',sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;color:var(--ink);letter-spacing:-.02em}
h1{font-size:clamp(2rem,4.4vw,3.25rem);font-weight:800}
h2{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:800}
h3{font-size:1.2rem;font-weight:700}
p{margin:0 0 1rem}
ul{margin:0 0 1rem;padding-left:1.1rem}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:76px 0}
.section--soft{background:var(--bg-soft)}
.section--tight{padding:52px 0}
.center{text-align:center}
.lead{font-size:1.075rem;color:var(--muted);max-width:62ch}
.muted{color:var(--muted)}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);background:var(--brand-soft);padding:6px 12px;border-radius:999px;margin-bottom:14px}
.section-head{max-width:720px;margin:0 auto 42px;text-align:center}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:.95rem;
  padding:12px 22px;border-radius:999px;border:1.5px solid transparent;cursor:pointer;
  transition:.2s transform,.2s box-shadow,.2s background,.2s color;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(37,99,235,.32)}
.btn--primary:hover{background:var(--brand-dark);color:#fff;box-shadow:0 12px 28px rgba(37,99,235,.4)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn--light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.34);backdrop-filter:blur(6px)}
.btn--light:hover{background:rgba(255,255,255,.22);color:#fff}
.btn--wa{background:#25d366;color:#06301a}
.btn--wa:hover{background:#1ebe5b;color:#06301a}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{height:40px;width:auto}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{color:var(--ink-2);font-weight:600;font-size:.95rem;padding:9px 14px;border-radius:9px}
.nav-links a:hover{background:var(--bg-soft);color:var(--brand)}
.nav-links a[aria-current="page"]{color:var(--brand);background:var(--brand-soft)}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;background:none;border:0;padding:10px;cursor:pointer}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;border-radius:2px;transition:.2s}
@media(max-width:900px){
  .nav-toggle{display:block}
  .nav-links{position:fixed;inset:72px 0 auto 0;flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border-bottom:1px solid var(--line);padding:12px 18px 20px;box-shadow:var(--shadow);
    transform:translateY(-140%);transition:.28s transform;max-height:calc(100vh - 72px);overflow:auto}
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:13px 12px;font-size:1rem;border-radius:10px}
  .nav-cta .btn--ghost{display:none}
}

/* ---------- hero ---------- */
.hero{position:relative;color:#fff;background:#0b1220;overflow:hidden}
.hero__bg{position:absolute;inset:0;background:url('../img/hero.svg') center/cover no-repeat;opacity:.95}
.hero__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,12,24,.94) 0%,rgba(7,12,24,.78) 45%,rgba(7,12,24,.42) 100%)}
.hero__inner{position:relative;padding:96px 0 88px;max-width:660px}
.hero h1{color:#fff;margin-bottom:.45em}
.hero p{color:#c7d3e6;font-size:1.12rem;max-width:56ch}
.hero .eyebrow{background:rgba(37,99,235,.22);color:#9dc0ff;border:1px solid rgba(157,192,255,.3)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-stats{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;border-top:1px solid rgba(255,255,255,.14);
  padding:26px 0 34px;margin-top:34px;max-width:860px}
.hero-stats b{display:block;font-size:1.7rem;font-weight:800;color:#fff}
.hero-stats span{font-size:.86rem;color:#9fb0c9}
@media(max-width:700px){.hero-stats{grid-template-columns:repeat(2,1fr)}.hero__inner{padding:72px 0 56px}}

/* ---------- trust strip ---------- */
.trust{display:flex;flex-wrap:wrap;gap:14px 34px;align-items:center;justify-content:center;padding:24px 0}
.trust img{height:56px;width:auto;opacity:.92}
@media(max-width:640px){.trust img{height:44px}}

/* ---------- cards / grid ---------- */
.grid{display:grid;gap:24px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
@media(max-width:1000px){.grid--4{grid-template-columns:repeat(2,1fr)}.grid--3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.grid--4,.grid--3,.grid--2{grid-template-columns:1fr}}

.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.22s transform,.22s box-shadow,.22s border-color;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2)}
.card__media{background:var(--bg-soft);position:relative}
.card__media img{width:100%;height:auto;aspect-ratio:400/320;object-fit:cover}
.card__badge{position:absolute;top:12px;left:12px;background:var(--ink);color:#fff;font-size:.72rem;font-weight:700;
  letter-spacing:.06em;text-transform:uppercase;padding:5px 10px;border-radius:999px}
.card__badge--blue{background:var(--brand)}
.card__body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.card__body h3{margin-bottom:4px}
.card__tag{color:var(--muted);font-size:.92rem;margin-bottom:12px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.chip{font-size:.76rem;font-weight:600;color:var(--ink-2);background:var(--bg-soft-2);border:1px solid var(--line);
  padding:4px 9px;border-radius:999px}
.card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px}
.card__price{font-weight:700;font-size:.9rem;color:var(--ink)}
.card__price small{display:block;font-weight:500;color:var(--muted);font-size:.74rem}

/* ---------- feature list ---------- */
.feature{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.feature svg{width:38px;height:38px;margin-bottom:14px}
.feature h3{font-size:1.05rem;margin-bottom:6px}
.feature p{margin:0;color:var(--muted);font-size:.94rem}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.split--reverse .split__media{order:2}
@media(max-width:880px){.split{grid-template-columns:1fr;gap:30px}.split--reverse .split__media{order:0}}
.split__media img{border-radius:var(--radius-lg);box-shadow:var(--shadow);width:100%}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:22px 0 0}
.stat{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px}
.stat b{display:block;font-size:1.5rem;font-weight:800;color:var(--brand)}
.stat span{font-size:.82rem;color:var(--muted)}
@media(max-width:560px){.stat-row{grid-template-columns:1fr 1fr}}

/* ---------- tables ---------- */
.spec-block{margin-bottom:30px}
.spec-block h3{display:flex;align-items:center;gap:10px;font-size:1.08rem;margin-bottom:12px}
.spec-block h3::before{content:"";width:6px;height:20px;border-radius:3px;background:var(--brand)}
table.spec{width:100%;border-collapse:collapse;font-size:.94rem;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
table.spec th,table.spec td{padding:11px 15px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
table.spec tr:last-child th,table.spec tr:last-child td{border-bottom:0}
table.spec th{width:44%;font-weight:600;color:var(--muted);background:var(--bg-soft)}
table.spec td{color:var(--ink-2);font-weight:500}
table.spec tr:hover td,table.spec tr:hover th{background:#fbfcfe}

/* ---------- page hero (inner pages) ---------- */
.page-hero{background:linear-gradient(135deg,#0b1220,#122a4d 65%,#0a3b52);color:#fff;padding:64px 0}
.page-hero h1{color:#fff;margin-bottom:.3em}
.page-hero p{color:#bccbe0;max-width:70ch;margin:0}
.crumbs{font-size:.84rem;color:#8fa3bf;margin-bottom:14px}
.crumbs a{color:#a9c1e6}

/* ---------- product detail ---------- */
.pd-top{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
@media(max-width:880px){.pd-top{grid-template-columns:1fr;gap:28px}}
.pd-media{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px}
.pd-media img{width:100%;height:auto}
.pd-keyfacts{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:18px 0}
.pd-keyfacts div{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px}
.pd-keyfacts b{display:block;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.pd-keyfacts span{font-weight:700;font-size:.95rem}
.pd-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 18px}
.pill{font-size:.8rem;font-weight:600;background:var(--brand-soft);color:var(--brand-dark);padding:5px 12px;border-radius:999px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;border-bottom:1px solid var(--line);margin:44px 0 26px}
.tab{background:none;border:0;padding:12px 16px;font:inherit;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-1px}
.tab[aria-selected="true"]{color:var(--brand);border-bottom-color:var(--brand)}
.tabpanel[hidden]{display:none}
.note{background:var(--bg-soft);border:1px dashed var(--line-2);border-radius:var(--radius-sm);padding:14px 16px;font-size:.9rem;color:var(--muted)}

/* ---------- certificates ---------- */
.cert-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;align-items:center}
.cert-grid img{width:100%;height:auto;filter:drop-shadow(0 6px 16px rgba(11,18,32,.06))}
@media(max-width:900px){.cert-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:520px){.cert-grid{grid-template-columns:repeat(2,1fr)}}

/* ---------- timeline ---------- */
.timeline{position:relative;margin:0;padding:0 0 0 26px;list-style:none;border-left:2px solid var(--line-2)}
.timeline li{position:relative;padding:0 0 26px 22px}
.timeline li::before{content:"";position:absolute;left:-33px;top:5px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--brand)}
.timeline b{display:block;color:var(--brand);font-size:.86rem;letter-spacing:.06em}
.timeline h3{margin:2px 0 4px;font-size:1.02rem}
.timeline p{margin:0;color:var(--muted);font-size:.92rem}

/* ---------- CTA band ---------- */
.cta{background:linear-gradient(120deg,#123a6b,#0b1220 70%);color:#fff;border-radius:var(--radius-lg);padding:48px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta h2{color:#fff;margin:0 0 6px}
.cta p{color:#c3d2e8;margin:0}
@media(max-width:680px){.cta{padding:32px 24px}}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:44px;align-items:start}
@media(max-width:880px){.contact-grid{grid-template-columns:1fr;gap:32px}}
.contact-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.contact-item:last-child{border-bottom:0}
.contact-item svg{width:24px;height:24px;flex:none;margin-top:3px}
.contact-item b{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.contact-item span,.contact-item a{font-weight:600;font-size:1.02rem;word-break:break-word}
form.inquiry{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:.86rem;font-weight:600;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;font:inherit;padding:12px 14px;border:1px solid var(--line-2);
  border-radius:var(--radius-sm);background:#fff;color:var(--ink)}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--brand-soft);border-color:var(--brand)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:560px){.field-row{grid-template-columns:1fr}}
.form-note{font-size:.84rem;color:var(--muted);margin-top:10px}

/* ---------- footer ---------- */
.site-footer{background:#0b1220;color:#9fb0c9;padding:56px 0 26px;margin-top:10px}
.site-footer a{color:#c3d2e8}
.site-footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px}
@media(max-width:880px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr}}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:14px;letter-spacing:.04em}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:9px;font-size:.92rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:38px;padding-top:20px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.84rem}
.footer-brand img{height:42px;margin-bottom:14px}

/* ---------- misc ---------- */
.badge-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:.78rem;font-weight:600;padding:5px 11px;border-radius:999px;background:var(--bg-soft-2);border:1px solid var(--line);color:var(--ink-2)}
.skip{position:absolute;left:-999px}
.skip:focus{left:16px;top:12px;background:#fff;padding:10px 14px;border-radius:8px;z-index:100}
.anchor{scroll-margin-top:90px}
[x-cloak]{display:none!important}