/* =========================================================
   Aoshang — Site vitrine (FR) · trashroom.xiaozhibg.cn
   Design tokens & base
   ========================================================= */
:root {
  --graphite: #171c1f;
  --graphite-2: #1f262b;
  --graphite-3: #2a3339;
  --paper: #f5f3ee;
  --paper-2: #ffffff;
  --ink: #20262a;
  --muted: #5c6b72;
  --steel: #5c6b72;
  --accent: #ff5a1f;
  --accent-dark: #d9470f;
  --line: #e3ded6;
  --line-dark: rgba(255, 255, 255, 0.12);

  --font-head: "Archivo", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --radius: 4px;
  --container: 1180px;
  --shadow-1: 0 18px 50px -28px rgba(23, 28, 31, 0.5);
  --shadow-2: 0 30px 70px -32px rgba(23, 28, 31, 0.55);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 700; line-height: 1.15; color: var(--graphite); }
.eyebrow {
  font-family: var(--font-head);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--accent); }

.section { padding: 92px 0; }
.section-head { max-width: 760px; margin-bottom: 52px; }
.section-head h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); margin: 16px 0 16px; letter-spacing: -0.01em; }
.section-head p { color: var(--muted); font-size: 1.05rem; }

/* Buttons / CTA */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all 0.24s var(--ease);
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: var(--shadow-1); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); }
.btn-secondary { background: transparent; color: var(--graphite); border-color: var(--graphite); }
.btn-secondary:hover { background: var(--graphite); color: #fff; }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.5); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn svg { width: 18px; height: 18px; }

/* ===== Top bar ===== */
.topbar { background: var(--graphite); color: rgba(255,255,255,0.82); font-size: 0.82rem; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; min-height: 40px; flex-wrap: wrap; gap: 6px; }
.topbar a:hover { color: var(--accent); }
.topbar .tb-right { display: flex; gap: 22px; }
.topbar .tb-item { display: inline-flex; align-items: center; gap: 7px; }

/* ===== Header / Nav ===== */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; min-height: 82px; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand img, .brand .logo-ph { height: 46px; width: auto; }
.brand .b-name { font-family: var(--font-head); font-weight: 800; font-size: 1.35rem; color: var(--graphite); letter-spacing: -0.02em; line-height: 1; }
.brand .b-sub { font-size: 0.66rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); margin-top: 3px; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a { padding: 10px 16px; font-family: var(--font-head); font-weight: 600; font-size: 0.92rem; color: var(--graphite); position: relative; border-radius: var(--radius); transition: color 0.2s var(--ease); }
.nav-links a::after { content: ""; position: absolute; left: 16px; right: 16px; bottom: 4px; height: 2px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform 0.24s var(--ease); }
.nav-links a:hover, .nav-links a.active { color: var(--accent-dark); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-cta { margin-left: 8px; }
.nav-cta .btn { padding: 11px 22px; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 26px; height: 2.5px; background: var(--graphite); margin: 5px 0; border-radius: 2px; transition: 0.3s var(--ease); }

/* ===== Hero ===== */
.hero { position: relative; background: var(--graphite); color: #fff; overflow: hidden; }
.hero .hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.32; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(23,28,31,0.92) 0%, rgba(23,28,31,0.55) 55%, rgba(23,28,31,0.25) 100%); }
.hero .container { position: relative; z-index: 2; padding: 110px 24px 120px; max-width: 1180px; }
.hero .eyebrow { color: var(--accent); }
.hero h1 { color: #fff; font-size: clamp(2.4rem, 5.4vw, 4.1rem); margin: 22px 0 24px; max-width: 860px; letter-spacing: -0.02em; }
.hero p.lead { color: rgba(255,255,255,0.85); font-size: 1.2rem; max-width: 640px; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-badges { display: flex; gap: 26px; flex-wrap: wrap; margin-top: 56px; padding-top: 30px; border-top: 1px solid var(--line-dark); max-width: 860px; }
.hero-badges .hb { display: flex; gap: 14px; align-items: center; }
.hero-badges .hb b { font-family: var(--font-head); font-size: 1.7rem; color: #fff; display: block; line-height: 1; }
.hero-badges .hb svg { width: 30px; height: 30px; color: var(--accent); flex: none; }
.hero-badges .hb span { font-size: 0.86rem; color: rgba(255,255,255,0.72); }

/* ===== Services strip ===== */
.strip { background: var(--paper-2); border-bottom: 1px solid var(--line); }
.strip .grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.strip .si { padding: 30px 26px; border-left: 1px solid var(--line); display: flex; gap: 16px; align-items: flex-start; }
.strip .si:first-child { border-left: 0; }
.strip .si svg { width: 32px; height: 32px; color: var(--accent); flex: none; }
.strip .si b { font-family: var(--font-head); display: block; font-size: 1rem; margin-bottom: 5px; color: var(--graphite); }
.strip .si span { font-size: 0.86rem; color: var(--muted); line-height: 1.55; }

/* ===== Split / about preview ===== */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; }
.split .media img, .split .media .img { border-radius: var(--radius); box-shadow: var(--shadow-2); width: 100%; object-fit: cover; aspect-ratio: 4 / 3; }
.split .media { position: relative; }
.split .media .badge-float { position: absolute; right: -18px; bottom: -24px; background: var(--accent); color: #fff; padding: 20px 24px; border-radius: var(--radius); box-shadow: var(--shadow-2); }
.split .media .badge-float b { font-family: var(--font-head); font-size: 1.9rem; display: block; line-height: 1; }
.split .media .badge-float span { font-size: 0.82rem; }
ul.check { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; margin: 24px 0; }
ul.check li { display: flex; gap: 10px; align-items: flex-start; font-size: 0.98rem; color: var(--ink); }
ul.check svg { width: 20px; height: 20px; color: var(--accent); flex: none; margin-top: 2px; }

/* ===== Feature grid ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.fcard { background: var(--paper-2); border: 1px solid var(--line); border-top: 3px solid var(--accent); border-radius: var(--radius); padding: 30px 26px; transition: transform 0.24s var(--ease), box-shadow 0.24s var(--ease); }
.fcard:hover { transform: translateY(-5px); box-shadow: var(--shadow-1); }
.fcard svg { width: 34px; height: 34px; color: var(--accent); margin-bottom: 18px; }
.fcard h3 { font-size: 1.12rem; margin-bottom: 10px; }
.fcard p { font-size: 0.94rem; color: var(--muted); }

/* ===== Steps ===== */
.steps { display: grid; grid-template-columns: repeat(7, 1fr); gap: 0; margin-top: 20px; position: relative; }
.steps .step { padding: 22px 16px 10px; position: relative; text-align: center; }
.steps .step:not(:last-child)::after { content: ""; position: absolute; right: 0; top: 34px; width: 100%; height: 1px; background: var(--line); z-index: 0; }
.steps .step .num { width: 44px; height: 44px; margin: 0 auto 14px; border-radius: 50%; background: var(--graphite); color: #fff; font-family: var(--font-head); font-weight: 700; display: flex; align-items: center; justify-content: center; position: relative; z-index: 1; border: 4px solid var(--paper); }
.steps .step b { font-family: var(--font-head); font-size: 0.95rem; display: block; margin-bottom: 6px; }
.steps .step span { font-size: 0.8rem; color: var(--muted); line-height: 1.5; }

/* ===== Product grid ===== */
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.pcard { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform 0.24s var(--ease), box-shadow 0.24s var(--ease); }
.pcard:hover { transform: translateY(-5px); box-shadow: var(--shadow-2); }
.pcard .p-img { position: relative; aspect-ratio: 4/3; overflow: hidden; }
.pcard .p-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.pcard:hover .p-img img { transform: scale(1.06); }
.pcard .cat { position: absolute; top: 12px; left: 12px; background: var(--accent); color: #fff; font-size: 0.7rem; font-weight: 700; font-family: var(--font-head); letter-spacing: 0.06em; text-transform: uppercase; padding: 5px 10px; border-radius: 3px; }
.pcard .p-body { padding: 20px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.pcard .p-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.pcard .p-body p { font-size: 0.9rem; color: var(--muted); flex: 1; margin-bottom: 16px; }
.pcard .p-link { font-family: var(--font-head); font-weight: 700; font-size: 0.86rem; color: var(--accent-dark); display: inline-flex; align-items: center; gap: 7px; }
.pcard .p-link svg { width: 16px; height: 16px; transition: transform 0.24s var(--ease); }
.pcard .p-link:hover svg { transform: translateX(4px); }

/* filter */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; }
.filter-btn { padding: 9px 18px; border: 1px solid var(--line); background: var(--paper-2); border-radius: 30px; font-family: var(--font-head); font-weight: 600; font-size: 0.86rem; color: var(--muted); cursor: pointer; transition: 0.22s var(--ease); }
.filter-btn:hover { border-color: var(--accent); color: var(--accent-dark); }
.filter-btn.active { background: var(--graphite); border-color: var(--graphite); color: #fff; }

/* ===== CTA band ===== */
.cta-band { background: linear-gradient(120deg, var(--graphite), var(--graphite-3)); color: #fff; position: relative; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; right: -80px; top: -80px; width: 320px; height: 320px; background: radial-gradient(circle, rgba(255,90,31,0.35), transparent 70%); }
.cta-band .container { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 70px 24px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: clamp(1.6rem, 3vw, 2.3rem); max-width: 640px; }
.cta-band p { color: rgba(255,255,255,0.75); margin-top: 10px; max-width: 560px; }

/* ===== Footer ===== */
.site-footer { background: var(--graphite); color: rgba(255,255,255,0.72); }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding: 72px 24px 48px; }
.site-footer h4 { color: #fff; font-size: 1.05rem; margin-bottom: 20px; }
.footer-about .f-brand { font-family: var(--font-head); font-weight: 800; color: #fff; font-size: 1.35rem; margin-bottom: 14px; }
.footer-about p { font-size: 0.92rem; line-height: 1.75; }
.site-footer ul li { margin-bottom: 12px; }
.site-footer ul a { font-size: 0.94rem; transition: color 0.2s; }
.site-footer ul a:hover { color: var(--accent); }
.footer-contact li { display: flex; gap: 12px; font-size: 0.93rem; align-items: flex-start; margin-bottom: 14px; }
.footer-contact li svg { width: 20px; height: 20px; color: var(--accent); flex: none; margin-top: 2px; }
.footer-bottom { border-top: 1px solid var(--line-dark); }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding-top: 22px; padding-bottom: 22px; font-size: 0.85rem; }

/* ===== Page hero (inner) ===== */
.page-hero { background: var(--graphite); color: #fff; position: relative; overflow: hidden; }
.page-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(23,28,31,0.9), rgba(23,28,31,0.5)); }
.page-hero .container { position: relative; z-index: 2; padding: 66px 24px 54px; }
.page-hero h1 { color: #fff; font-size: clamp(2rem, 4.4vw, 3.2rem); margin: 16px 0 14px; }
.page-hero p { color: rgba(255,255,255,0.82); max-width: 680px; font-size: 1.05rem; }
.breadcrumb { display: flex; gap: 8px; font-size: 0.84rem; color: rgba(255,255,255,0.6); align-items: center; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb svg { width: 14px; height: 14px; }

/* ===== About page ===== */
.values-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.spec-table { width: 100%; border-collapse: collapse; margin-top: 12px; }
.spec-table th, .spec-table td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); font-size: 0.95rem; }
.spec-table th { font-family: var(--font-head); color: var(--graphite); width: 220px; font-weight: 700; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 14px; background: var(--paper-2); overflow: hidden; }
.faq-item summary { list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 22px 24px; cursor: pointer; font-family: var(--font-head); font-weight: 600; font-size: 1.03rem; color: var(--graphite); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .chev { width: 22px; height: 22px; color: var(--accent); flex: none; transition: transform 0.28s var(--ease); }
.faq-item[open] summary .chev { transform: rotate(180deg); }
.faq-item .faq-body { padding: 0 24px 24px; color: var(--muted); font-size: 0.97rem; }

/* ===== Contact form ===== */
.contact-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: start; }
.form-card { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow-1); }
.form-card .form-note { font-size: 0.9rem; color: var(--muted); margin-bottom: 6px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-family: var(--font-head); font-weight: 600; font-size: 0.86rem; margin-bottom: 8px; color: var(--graphite); }
.field label .req { color: var(--accent); }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; border: 1.5px solid var(--line); border-radius: var(--radius);
  font-family: var(--font-body); font-size: 0.96rem; color: var(--ink); background: #fff; transition: border-color 0.22s, box-shadow 0.22s;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,90,31,0.12); }
/* honeypot field hidden from humans */
.hp-field { position: absolute !important; left: -9999px !important; opacity: 0; height: 0; width: 0; overflow: hidden; }

.form-status { display: none; margin-top: 20px; padding: 16px 20px; border-radius: var(--radius); font-size: 0.96rem; }
.form-status.ok { display: flex; gap: 10px; align-items: flex-start; background: #eaf6ec; color: #1f7a33; border: 1px solid #cdeeda; }
.form-status.err { display: flex; gap: 10px; align-items: flex-start; background: #fdecec; color: #b3261e; border: 1px solid #f6cdcd; }
.form-status svg { width: 22px; height: 22px; flex: none; }

.contact-side .c-grid { display: grid; gap: 18px; margin-top: 26px; }
.contact-side .c-item { display: flex; gap: 16px; align-items: flex-start; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.contact-side .c-item svg { width: 26px; height: 26px; color: var(--accent); flex: none; }
.contact-side .c-item b { display: block; font-family: var(--font-head); font-size: 0.95rem; margin-bottom: 4px; color: var(--graphite); }
.contact-side .c-item span { font-size: 0.92rem; color: var(--muted); line-height: 1.6; }

/* ===== Product detail ===== */
.pd-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.pd-media img, .pd-media .img { border-radius: var(--radius); box-shadow: var(--shadow-2); width: 100%; aspect-ratio: 16/11; object-fit: cover; }
.pd-media .brand-note { margin-top: 18px; display: flex; gap: 14px; background: var(--graphite); color: rgba(255,255,255,0.85); padding: 18px 20px; border-radius: var(--radius); font-size: 0.9rem; align-items: flex-start; }
.pd-media .brand-note svg { color: var(--accent); width: 24px; height: 24px; flex: none; }
.pd-specs { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; margin-top: 26px; }
.pd-specs h3 { margin-bottom: 14px; font-size: 1.1rem; }
.pd-specs ul li { display: flex; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 0.95rem; align-items: flex-start; }
.pd-specs ul li svg { color: var(--accent); width: 18px; height: 18px; flex: none; margin-top: 3px; }
.pd-specs ul li:last-child { border-bottom: 0; }
.pd-desc p { color: var(--muted); margin-bottom: 16px; font-size: 1rem; }
.pd-desc h2 { font-size: 1.45rem; margin: 30px 0 14px; }

/* ===== reveal animation ===== */
.reveal { opacity: 1; transform: translateY(26px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ===== Page head (light inner hero) ===== */
.page-head { background: var(--paper-2); border-bottom: 1px solid var(--line); }
.page-head .container { padding-top: 60px; padding-bottom: 52px; }
.page-head h1 { font-size: clamp(2rem, 4.4vw, 3.1rem); margin: 14px 0 14px; letter-spacing: -0.015em; }
.page-head p { color: var(--muted); font-size: 1.08rem; max-width: 720px; }
.crumbs { display: flex; align-items: center; gap: 9px; font-size: 0.84rem; color: var(--muted); margin-top: 18px; }
.crumbs a { color: var(--muted); font-family: var(--font-head); font-weight: 600; }
.crumbs a:hover { color: var(--accent-dark); }
.crumbs span:not(:last-child) { opacity: 0.5; }
.crumbs [aria-current] { color: var(--graphite); font-weight: 700; }

/* ===== FAQ (native <details>) ===== */
.narrow { max-width: 860px; margin: 0 auto; }
.faq details { border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 14px; background: var(--paper-2); overflow: hidden; }
.faq summary { list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 22px 24px; cursor: pointer; font-family: var(--font-head); font-weight: 600; font-size: 1.03rem; color: var(--graphite); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .caret { width: 20px; height: 20px; flex: none; color: var(--accent); transition: transform 0.28s var(--ease); flex: none; }
.faq summary .caret::after { content: "+"; font-size: 1.3rem; line-height: 1; font-weight: 700; }
.faq details[open] summary .caret { transform: rotate(45deg); }
.faq .faq-a { padding: 0 24px 24px; color: var(--muted); font-size: 0.98rem; }
.faq .faq-a p { margin-bottom: 10px; }

/* ===== Contact page ===== */
.contact-list { display: grid; gap: 16px; margin: 26px 0; }
.contact-list li { display: flex; gap: 16px; align-items: flex-start; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.contact-list li svg { width: 26px; height: 26px; color: var(--accent); flex: none; }
.contact-list li b { display: block; font-family: var(--font-head); font-size: 0.95rem; margin-bottom: 3px; color: var(--graphite); }
.contact-list li span { font-size: 0.93rem; color: var(--muted); line-height: 1.6; }
.contact-note { display: flex; gap: 14px; align-items: flex-start; background: var(--paper-2); border-left: 3px solid var(--accent); padding: 18px 20px; border-radius: var(--radius); margin-top: 26px; }
.contact-note svg { width: 22px; height: 22px; color: var(--accent); flex: none; margin-top: 2px; }
.contact-note p { font-size: 0.93rem; color: var(--muted); }
.contact-note b { color: var(--graphite); }
.form-wrap { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 38px; box-shadow: var(--shadow-1); }
.form-wrap h2 { font-size: 1.5rem; margin-bottom: 8px; }
.form-sub { font-size: 0.92rem; color: var(--muted); margin-bottom: 26px; }
.btn-block { width: 100%; justify-content: center; }
#formStatus { margin-top: 20px; }

/* ===== Stats ===== */
.stat-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.stat { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 22px; text-align: center; }
.stat b { font-family: var(--font-head); font-size: 1.9rem; color: var(--accent-dark); display: block; line-height: 1.1; }
.stat span { font-size: 0.86rem; color: var(--muted); display: block; margin-top: 6px; }

/* ===== Production process ===== */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.pstep { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; position: relative; }
.pstep .num { font-family: var(--font-head); font-weight: 800; font-size: 2rem; color: var(--line); }
.pstep h3 { font-size: 1.05rem; margin: 14px 0 8px; }
.pstep p { font-size: 0.92rem; color: var(--muted); }

/* ===== Product detail page ===== */
.pd-top { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: start; }
.pd-media img { border-radius: var(--radius); box-shadow: var(--shadow-2); width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.pd-info h2 { font-size: 1.6rem; margin-bottom: 16px; }
.pd-materials { margin: 24px 0; padding: 18px 20px; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); }
.pd-materials .m-label { font-family: var(--font-head); font-weight: 700; font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent-dark); display: block; margin-bottom: 6px; }
.pd-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.longdesc p { color: var(--muted); font-size: 1rem; margin-bottom: 16px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .prod-grid { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(4,1fr); row-gap: 10px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .pd-layout { grid-template-columns: 1fr; }
  .strip .grid { grid-template-columns: repeat(2,1fr); }
  .strip .si { border-left: 0; border-top: 1px solid var(--line); }
}
@media (max-width: 760px) {
  .nav-links, .nav-cta { display: none; flex-direction: column; gap: 4px; }
  .nav-toggle { display: block; }
  .site-header.open .nav-links { display: flex; position: absolute; top: 82px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--line); padding: 12px 24px 20px; box-shadow: var(--shadow-2); z-index: 99; align-items: stretch; }
  .site-header.open .nav-cta { display: block; padding: 12px 24px; }
  .site-header.open .nav-links a { padding: 14px 4px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .site-header.open .nav-links a::after { display: none; }
  .prod-grid { grid-template-columns: repeat(2,1fr); gap: 14px; }
  .feature-grid, .values-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .hero .container { padding: 80px 24px 90px; }
  ul.check { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .btn { width: 100%; justify-content: center; }
  .steps { grid-template-columns: repeat(2,1fr); }
  .footer-top { grid-template-columns: 1fr; }
  .hero-badges { gap: 18px; }
  .form-card { padding: 24px; }
}
@media (max-width: 520px) {
  .prod-grid { grid-template-columns: 1fr; }
}

/* responsive for added components */
@media (max-width: 1024px) {
  .stat-grid { grid-template-columns: repeat(3,1fr); }
  .process-grid { grid-template-columns: repeat(2,1fr); }
  .pd-top { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 760px) {
  .stat-grid { grid-template-columns: repeat(2,1fr); }
  .form-wrap { padding: 26px 22px; }
  .page-head .container { padding-top: 44px; padding-bottom: 40px; }
}