/* =====================================================================
   AERIS HQ — shared stylesheet
   Visual language: warm boutique / natural activewear
   Palette: cream & oat ground, sage primary, clay accent, charcoal ink
   Type: serif display headings + clean sans body
   ===================================================================== */
:root{
  --bg:#FBF8F2; --bg-soft:#F1EBDF; --ink:#2A2722; --ink-soft:#6E655A;
  --line:#E6DECE; --sage:#7C9885; --sage-d:#5F7A68; --clay:#B07A5B; --clay-d:#946242;
  --radius:18px; --maxw:1180px;
  --serif:Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--sage-d);font-weight:700}
h1,h2,h3{font-weight:700;letter-spacing:-.01em;line-height:1.14}
.display{font-family:var(--serif);font-weight:400;letter-spacing:-.01em}
section{padding:84px 0}
.section-soft{background:var(--bg-soft)}
.section-dark{background:var(--ink);color:#fff}
.btn{display:inline-block;background:var(--sage);color:#fff;padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;transition:.18s;box-shadow:0 6px 18px rgba(124,152,133,.30);cursor:pointer;border:none;font-family:inherit}
.btn:hover{background:var(--sage-d);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink);box-shadow:none}
.btn.ghost:hover{background:var(--ink);color:#fff}
.btn.light{background:#fff;color:var(--ink)}
.btn.light:hover{background:#eef3ee;transform:translateY(-1px)}

/* ---------- NAV ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(251,248,242,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:24px;letter-spacing:.14em;font-weight:400}
.brand img{height:30px;width:auto}
.menu{display:flex;gap:26px;font-size:14px;font-weight:600;color:var(--ink-soft);align-items:center}
.menu a:hover,.menu a.active{color:var(--ink)}
.nav .btn{padding:9px 20px;font-size:14px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--ink);transition:.2s}

/* ---------- HERO ---------- */
.hero{background:linear-gradient(135deg,#F1EBDF 0%,#E6DBC6 100%);color:var(--ink);padding:92px 0 96px;position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::after{content:"";position:absolute;right:-150px;top:-130px;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(124,152,133,.30),transparent 70%)}
.hero .wrap{position:relative;z-index:1}
.hero h1{font-size:clamp(38px,6vw,66px);max-width:760px}
.hero p.lead{font-size:19px;color:#5d554a;max-width:560px;margin:22px 0 32px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.badges{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px;font-size:13px;color:#6e655a}
.badges span{background:rgba(255,255,255,.55);border:1px solid var(--line);padding:6px 14px;border-radius:999px}

/* ---------- STATS ---------- */
.stats{background:var(--sage);color:#fff;padding:40px 0}
.statgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat .n{font-size:34px;font-weight:700;color:#fff}
.stat .n small{color:#dcebe1;font-size:22px}
.stat .l{font-size:13px;color:#e2ece5;letter-spacing:.04em;margin-top:4px}

/* ---------- SECTION HEAD ---------- */
.shead{margin-bottom:38px;max-width:720px}
.shead h2{font-size:clamp(28px,4vw,42px);margin:10px 0 12px}
.shead p{color:var(--ink-soft);font-size:16px}
.section-dark .shead h2{color:#fff}
.section-dark .shead p{color:#a9a195}
.dimlabel{display:inline-block;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--clay-d);font-weight:700;margin:26px 0 14px}

/* ---------- ABOUT ---------- */
.about p{font-size:17px;color:var(--ink-soft);max-width:760px}
.about .cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px}
.ac{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff}
.ac b{display:block;font-size:15px;margin-bottom:6px}
.ac span{color:var(--ink-soft);font-size:14px}

/* ---------- TIMELINE ---------- */
.tl{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px}
.tl .it{border-left:3px solid var(--sage);padding:0 0 0 16px}
.tl .yr{font-weight:700;font-size:18px}
.tl .tx{font-size:13.5px;color:var(--ink-soft);margin-top:4px}

/* ---------- SPLIT / FACTORY ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.split img{border-radius:var(--radius);width:100%;height:520px;object-fit:cover}
.kpi{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:24px}
.kpi .k{border:1px solid var(--line);border-radius:12px;padding:18px;background:#fff}
.kpi .k b{font-size:26px;display:block}
.kpi .k span{font-size:13px;color:var(--ink-soft)}

/* ---------- CATEGORY CARDS ---------- */
.catgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.catcard{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;cursor:pointer;transition:.18s}
.catcard:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(42,39,34,.10)}
.catph{height:172px;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.catph img{width:74%;height:80%;object-fit:contain;filter:drop-shadow(0 6px 16px rgba(0,0,0,.10))}
.catb{padding:15px 17px 18px}
.catb b{font-size:16px}
.catb .en{display:block;font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--sage-d);font-weight:700;margin-top:2px}
.catb .meta{display:flex;align-items:center;justify-content:space-between;margin-top:11px}
.catb .sw{width:15px;height:15px;border-radius:5px;border:1px solid rgba(0,0,0,.10)}
.catb .dim{font-size:11px;color:var(--ink-soft);letter-spacing:.05em;max-width:80%}

/* ---------- FILTER NAV ---------- */
.filterbar{display:flex;gap:10px;flex-wrap:wrap;margin:8px 0 8px}
.filterbtn{font-family:var(--sans);font-size:14px;font-weight:600;color:var(--ink-soft);background:#fff;border:1.5px solid var(--line);padding:9px 18px;border-radius:999px;cursor:pointer;transition:.16s;white-space:nowrap}
.filterbtn:hover{border-color:var(--sage);color:var(--sage-d)}
.filterbtn.active{background:var(--sage);border-color:var(--sage);color:#fff}
.collcount{font-size:13px;color:var(--ink-soft);margin:0 0 24px}
.empty{display:none;text-align:center;color:var(--ink-soft);padding:48px 0;font-size:15px}
.empty.show{display:block}

/* ---------- PRODUCT GRID (shared) ---------- */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pcard{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;transition:.18s}
.pcard:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(42,39,34,.08)}
.pcard.hide{display:none}
.pcard .ph{height:200px;background:#fff;overflow:hidden;border-bottom:1px solid var(--line)}
.pcard .ph img{width:100%;height:100%;object-fit:contain}
.pcard .pb{padding:16px 18px}
.pcard .pb b{font-size:15.5px}
.pcard .pb span{display:block;font-size:13px;color:var(--ink-soft);margin-top:6px}
.tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.tags i{font-style:normal;font-size:11px;color:var(--sage-d);background:#eef3ee;padding:3px 9px;border-radius:999px}

/* ---------- FEATURE / OEM / STEPS / GLOBAL / SUSTAIN ---------- */
.fgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.fbox{border:1px solid var(--line);border-radius:14px;padding:22px;background:#fff}
.fbox b{font-size:16px}
.fbox p{font-size:13.5px;color:var(--ink-soft);margin-top:6px}
.fstrip{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.fstrip span{font-size:13px;border:1px solid var(--line);border-radius:999px;padding:7px 16px}

.oem{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ocard{border:1px solid var(--line);border-radius:var(--radius);padding:30px;background:#fff}
.ocard h3{font-size:22px}
.ocard p{color:var(--ink-soft);margin:10px 0 14px;font-size:15px}
.ocard ul{list-style:none;font-size:14px;color:var(--ink-soft)}
.ocard ul li{padding:5px 0 5px 22px;position:relative}
.ocard ul li::before{content:"✓";position:absolute;left:0;color:var(--sage);font-weight:800}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.step{border:1px solid var(--line);border-radius:14px;padding:20px;background:#fff}
.step .no{font-size:12px;font-weight:800;color:var(--sage-d);letter-spacing:.1em}
.step b{display:block;margin:6px 0 6px;font-size:16px}
.step span{font-size:13px;color:var(--ink-soft)}

.glob{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.bar{margin:14px 0}
.bar .t{display:flex;justify-content:space-between;font-size:13.5px;margin-bottom:6px}
.bar .track{height:10px;background:var(--line);border-radius:999px;overflow:hidden}
.bar .fill{height:100%;background:var(--sage);border-radius:999px}
.stories{display:grid;gap:14px}
.story{border:1px solid var(--line);border-radius:14px;padding:18px;background:#fff}
.story b{font-size:14.5px}
.story span{display:block;font-size:13px;color:var(--ink-soft);margin-top:4px}

.sus .sgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:24px}
.sbox{background:#fff;border-radius:14px;padding:22px}
.sbox b{font-size:16px}
.sbox span{display:block;font-size:13.5px;color:var(--ink-soft);margin-top:6px}

/* dark certs */
.cgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cbox{border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:20px}
.cbox b{font-size:17px;color:var(--sage)}
.cbox span{display:block;font-size:13.5px;color:#c7d4cf;margin-top:5px}
.qc{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
.qc .q{border-left:3px solid var(--sage);padding-left:14px;font-size:14px;color:#cfe0db}

/* ---------- CONTACT ---------- */
.cwrap{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.info .row{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.info .row b{width:96px;flex:none;color:var(--sage);font-size:13px;letter-spacing:.06em}
.info .row span{font-size:15px;color:#e9efed}
.info .row a:hover{color:var(--sage)}
.form{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:28px}
.form h3{font-size:18px;margin-bottom:16px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:#cfe0db;margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-size:14px;font-family:inherit}
.field textarea{resize:vertical;min-height:96px}
.form .btn{width:100%;text-align:center;margin-top:6px}
.form .note{font-size:12.5px;color:#a9a195;margin-top:12px;text-align:center}

/* ---------- PAGE HERO (sub pages) ---------- */
.pagehero{padding:70px 0 56px;background:linear-gradient(135deg,#F1EBDF 0%,#E6DBC6 100%);border-bottom:1px solid var(--line)}
.pagehero h1{font-size:clamp(34px,5vw,52px);max-width:820px}
.pagehero p{font-size:18px;color:#5d554a;max-width:600px;margin-top:16px}

/* ---------- FOOTER ---------- */
footer{padding:30px 0;font-size:13px;color:var(--ink-soft);border-top:1px solid var(--line)}
.foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.foot a:hover{color:var(--sage-d)}

/* ---------- RESPONSIVE ---------- */
@media(max-width:880px){
  .burger{display:flex}
  .menu{display:none;position:absolute;top:66px;left:0;right:0;background:var(--bg);flex-direction:column;gap:0;padding:8px 24px 18px;border-bottom:1px solid var(--line)}
  .nav.open .menu{display:flex}
  .menu a{padding:12px 0;border-bottom:1px solid var(--line);width:100%}
  .split,.glob,.cwrap,.oem{grid-template-columns:1fr}
  .split img{height:340px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .about .cards,.catgrid,.grid3,.fgrid,.cgrid,.qc,.sgrid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  section{padding:64px 0}
}
@media(max-width:480px){
  .steps{grid-template-columns:1fr}
  .hero{padding:64px 0 72px}
}