/* ==========================================================================
   DINGNA Official Site - High-end Black & Gold Theme
   ========================================================================== */

:root {
  --bg: #0a0b0d;
  --bg-soft: #101216;
  --bg-panel: #15181e;
  --bg-panel-2: #1b1f27;
  --line: rgba(201, 162, 39, 0.18);
  --line-soft: rgba(255, 255, 255, 0.08);
  --gold: #c9a227;
  --gold-light: #e8cd7a;
  --gold-deep: #8c6f14;
  --flame: #e07b2c;
  --text: #f3f4f6;
  --text-soft: #b6bcc6;
  --text-muted: #8b919c;
  --radius: 4px;
  --maxw: 1240px;
  --nav-h: 76px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -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(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

/* ------------------------------- Typography ------------------------------ */
h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.01em;
}
h1 { font-size: clamp(34px, 5vw, 62px); }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(19px, 2vw, 23px); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--gold);
}

.lead {
  font-size: 17px;
  color: var(--text-soft);
  max-width: 760px;
}

.gold { color: var(--gold-light); }

/* --------------------------------- Nav ---------------------------------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  background: rgba(10, 11, 13, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.nav.scrolled {
  background: rgba(10, 11, 13, 0.94);
  border-bottom-color: var(--line);
}
.nav-inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border: 1px solid var(--gold);
  color: var(--gold-light);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.06em;
  background: linear-gradient(145deg, rgba(201,162,39,0.16), rgba(201,162,39,0));
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong {
  font-size: 19px; letter-spacing: 0.16em; font-weight: 600;
  background: linear-gradient(100deg, #fff, var(--gold-light) 70%, var(--gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.brand-text span { font-size: 11px; letter-spacing: 0.22em; color: var(--text-muted); }

.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
  font-size: 14.5px;
  letter-spacing: 0.06em;
  color: var(--text-soft);
  position: relative;
  padding: 6px 0;
  transition: color 0.25s var(--ease);
}
.nav-links a::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--gold-light); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 14px; }

.lang-switch {
  display: flex; align-items: center;
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.lang-switch button {
  background: none; border: none; cursor: pointer;
  color: var(--text-muted);
  font-size: 12.5px; letter-spacing: 0.1em;
  padding: 7px 12px;
  font-family: inherit;
  transition: all 0.25s var(--ease);
}
.lang-switch button.active { background: var(--gold); color: #16171a; font-weight: 600; }
.lang-switch button:hover:not(.active) { color: var(--gold-light); }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  background: none; border: 1px solid var(--line);
  cursor: pointer;
  position: relative;
}
.nav-toggle span {
  position: absolute; left: 11px; right: 11px; height: 1px;
  background: var(--gold-light);
  transition: all 0.3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 19px; }
.nav-toggle span:nth-child(3) { top: 24px; }
.nav-toggle.open span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 19px; transform: rotate(-45deg); }

/* --------------------------------- Buttons ------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 30px;
  font-size: 14.5px; letter-spacing: 0.08em;
  border: 1px solid var(--gold);
  color: var(--gold-light);
  background: transparent;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  position: relative;
  overflow: hidden;
  font-family: inherit;
}
.btn::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg, var(--gold), var(--gold-deep));
  transform: translateY(101%);
  transition: transform 0.35s var(--ease);
  z-index: -1;
}
.btn:hover { color: #14151a; border-color: var(--gold-light); }
.btn:hover::before { transform: translateY(0); }
.btn-solid {
  background: linear-gradient(120deg, var(--gold), var(--gold-deep));
  color: #14151a; font-weight: 600;
}
.btn-solid:hover { color: #14151a; filter: brightness(1.08); }
.btn .arw { transition: transform 0.3s var(--ease); }
.btn:hover .arw { transform: translateX(5px); }

/* --------------------------------- Hero --------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 60px) 0 90px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 600px at 78% 18%, rgba(201,162,39,0.16), transparent 62%),
    radial-gradient(700px 500px at 12% 88%, rgba(224,123,44,0.13), transparent 60%),
    linear-gradient(180deg, #0a0b0d 0%, #101216 55%, #0a0b0d 100%);
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.028) 1px, transparent 1px);
  background-size: 74px 74px;
  mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
}
.hero .container { position: relative; z-index: 2; }
.hero h1 { margin-bottom: 26px; max-width: 900px; }
.hero h1 .accent {
  background: linear-gradient(100deg, var(--gold-light), var(--gold) 60%, #a97f16);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--text-soft);
  max-width: 660px;
  margin-bottom: 40px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 68px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.hero-stats div {
  background: rgba(16,18,22,0.72);
  padding: 26px 22px;
}
.hero-stats .num {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 600;
  color: var(--gold-light);
  line-height: 1.1;
}
.hero-stats .num small { font-size: 0.5em; margin-left: 3px; color: var(--text-soft); }
.hero-stats .lbl { font-size: 13px; color: var(--text-muted); letter-spacing: 0.06em; }

/* ------------------------------ Section base ----------------------------- */
.section { padding: 110px 0; position: relative; }
.section-alt { background: var(--bg-soft); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }

.sec-head { margin-bottom: 56px; max-width: 820px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head.center .lead { margin-left: auto; margin-right: auto; }
.sec-head h2 { margin-bottom: 18px; }
.sec-head.center .eyebrow { justify-content: center; }

/* -------------------------------- Cards --------------------------------- */
.grid { display: grid; gap: 26px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  background: linear-gradient(160deg, var(--bg-panel), #101216);
  border: 1px solid var(--line-soft);
  padding: 34px 30px;
  transition: all 0.4s var(--ease);
  overflow: hidden;
}
.card::after {
  content: "";
  position: absolute; left: 0; top: 0; width: 0; height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  transition: width 0.45s var(--ease);
}
.card:hover { transform: translateY(-6px); border-color: var(--line); background: linear-gradient(160deg, var(--bg-panel-2), #12151a); }
.card:hover::after { width: 100%; }

.card .idx {
  font-size: 12px; letter-spacing: 0.2em; color: var(--gold);
  margin-bottom: 14px; display: block;
}
.card h3 { margin-bottom: 12px; }
.card p { color: var(--text-soft); font-size: 15px; }

.card-icon {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  color: var(--gold-light);
}
.card-icon svg { width: 22px; height: 22px; }

/* ----------------------------- Feature list ------------------------------ */
.feat-list { margin-top: 18px; }
.feat-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  color: var(--text-soft);
  margin-bottom: 9px;
}
.feat-list li::before {
  content: "";
  position: absolute; left: 0; top: 11px;
  width: 6px; height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
}

/* ------------------------------ Product page ----------------------------- */
.prod-cat {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: stretch;
}
.prod-cat.reverse .pc-visual { order: 2; }
.prod-card {
  border: 1px solid var(--line-soft);
  background: linear-gradient(155deg, var(--bg-panel), #0e1014);
  padding: 40px;
  display: flex; flex-direction: column;
  justify-content: center;
  transition: border-color 0.4s var(--ease);
}
.prod-card:hover { border-color: var(--line); }
.prod-card .range {
  display: inline-block;
  border: 1px solid var(--line);
  color: var(--gold-light);
  font-size: 12.5px; letter-spacing: 0.08em;
  padding: 6px 14px;
  margin-bottom: 20px;
}
.prod-card h3 { margin-bottom: 6px; }
.prod-card .en-name { font-size: 12.5px; letter-spacing: 0.14em; color: var(--text-muted); text-transform: uppercase; margin-bottom: 16px; }
.prod-card p { color: var(--text-soft); font-size: 15px; margin-bottom: 18px; }
.series-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.series-tags span {
  font-size: 12.5px;
  padding: 5px 12px;
  background: rgba(201,162,39,0.09);
  border: 1px solid rgba(201,162,39,0.22);
  color: var(--gold-light);
  letter-spacing: 0.04em;
}
.spec-row {
  display: flex; gap: 26px; flex-wrap: wrap;
  border-top: 1px solid var(--line-soft);
  padding-top: 18px;
}
.spec-row div { font-size: 13px; color: var(--text-muted); }
.spec-row strong { display: block; font-size: 15px; color: var(--text); font-weight: 600; }

.pc-visual {
  position: relative;
  min-height: 320px;
  border: 1px solid var(--line-soft);
  background:
    radial-gradient(500px 340px at 70% 30%, rgba(201,162,39,0.15), transparent 65%),
    radial-gradient(420px 300px at 20% 90%, rgba(224,123,44,0.13), transparent 65%),
    linear-gradient(160deg, #14171d, #0b0d10);
  display: grid; place-items: center;
  overflow: hidden;
}
.pc-visual::before {
  content: "";
  position: absolute; inset: 0;
  background-image: linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
}
.pc-visual .burner {
  position: relative; z-index: 2;
  width: 210px; height: 210px;
  display: grid; place-items: center;
}
.pc-visual .flame-core {
  width: 92px; height: 92px; border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  background: radial-gradient(circle at 50% 68%, #ffd98a 0%, var(--flame) 42%, #9c3d0d 78%, transparent 82%);
  filter: blur(0.4px);
  animation: flicker 3.4s ease-in-out infinite;
}
@keyframes flicker {
  0%, 100% { transform: scaleY(1) scaleX(1); opacity: 0.95; }
  35% { transform: scaleY(1.09) scaleX(0.96); opacity: 1; }
  70% { transform: scaleY(0.95) scaleX(1.03); opacity: 0.9; }
}
.pc-visual .ring {
  position: absolute;
  border: 1px solid rgba(201,162,39,0.35);
  border-radius: 50%;
}
.pc-visual .ring.r1 { width: 150px; height: 150px; }
.pc-visual .ring.r2 { width: 210px; height: 210px; border-style: dashed; opacity: 0.5; }
.pc-visual .tag {
  position: absolute; bottom: 18px; left: 22px;
  font-size: 11.5px; letter-spacing: 0.2em; color: var(--text-muted);
  text-transform: uppercase;
}

/* ------------------------------- Tech grid ------------------------------- */
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); }
.tech-item {
  background: var(--bg-soft);
  padding: 34px 28px;
  transition: background 0.35s var(--ease);
}
.tech-item:hover { background: var(--bg-panel); }
.tech-item .t-no {
  font-size: 11.5px; letter-spacing: 0.22em; color: var(--gold); display: block; margin-bottom: 12px;
}
.tech-item h4 { font-size: 17px; margin-bottom: 10px; color: var(--text); }
.tech-item p { font-size: 14.5px; color: var(--text-soft); }

/* -------------------------------- Timeline ------------------------------- */
.timeline { position: relative; border-left: 1px solid var(--line); padding-left: 34px; }
.tl-item { position: relative; padding-bottom: 40px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute; left: -40px; top: 8px;
  width: 11px; height: 11px;
  background: var(--gold);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(201,162,39,0.14);
}
.tl-year { font-size: 13px; letter-spacing: 0.2em; color: var(--gold-light); margin-bottom: 6px; }
.tl-item h4 { font-size: 18px; margin-bottom: 8px; }
.tl-item p { color: var(--text-soft); font-size: 15px; max-width: 720px; }

/* --------------------------------- Values -------------------------------- */
.value-item {
  border-left: 2px solid var(--line);
  padding: 6px 0 6px 24px;
}
.value-item h4 { margin-bottom: 8px; color: var(--gold-light); letter-spacing: 0.04em; }
.value-item p { color: var(--text-soft); font-size: 15px; }

/* ------------------------------- CTA band -------------------------------- */
.cta-band {
  position: relative;
  padding: 84px 0;
  background:
    radial-gradient(700px 400px at 50% 0%, rgba(201,162,39,0.16), transparent 65%),
    linear-gradient(180deg, #101216, #0a0b0d);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: center;
}
.cta-band h2 { margin-bottom: 16px; }
.cta-band .lead { margin: 0 auto 34px; }

/* -------------------------------- Contact -------------------------------- */
.contact-wrap { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 46px; align-items: start; }

.info-card {
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, var(--bg-panel), #0e1014);
  padding: 30px 28px;
  display: flex; gap: 18px;
  margin-bottom: 20px;
  transition: border-color 0.35s var(--ease);
}
.info-card:hover { border-color: var(--line); }
.info-card .ico {
  flex: none; width: 42px; height: 42px;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  color: var(--gold-light);
}
.info-card .ico svg { width: 18px; height: 18px; }
.info-card .lab { font-size: 12px; letter-spacing: 0.18em; color: var(--text-muted); text-transform: uppercase; margin-bottom: 4px; }
.info-card .val { font-size: 16px; color: var(--text); }
.info-card .val a:hover { color: var(--gold-light); }
.info-card .sub { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

.form-box {
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, var(--bg-panel), #0e1014);
  padding: 40px 36px;
}
.form-box h3 { margin-bottom: 8px; }
.form-box .fh { font-size: 14.5px; color: var(--text-muted); margin-bottom: 28px; }
.field { margin-bottom: 20px; }
.field label {
  display: block; font-size: 12.5px; letter-spacing: 0.12em;
  color: var(--gold-light); margin-bottom: 8px; text-transform: uppercase;
}
.field input, .field select, .field textarea {
  width: 100%;
  background: #0c0e12;
  border: 1px solid var(--line-soft);
  color: var(--text);
  padding: 13px 15px;
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--gold); background: #0f1116;
}
.field textarea { min-height: 128px; resize: vertical; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-note { font-size: 12.5px; color: var(--text-muted); margin-top: 16px; line-height: 1.7; }
.form-msg {
  display: none; margin-top: 18px; padding: 12px 16px;
  border: 1px solid var(--line); background: rgba(201,162,39,0.08);
  color: var(--gold-light); font-size: 14px;
}
.form-msg.show { display: block; }

/* ---------------------------- Emission table ---------------------------- */
.emis-table { border: 1px solid var(--line-soft); }
.emis-row {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  gap: 1px;
  background: var(--line-soft);
}
.emis-row > div { background: var(--bg-soft); padding: 16px 22px; font-size: 15px; }
.emis-head > div {
  background: var(--bg-panel);
  color: var(--gold-light);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.emis-row:not(.emis-head):hover > div { background: var(--bg-panel); }
@media (max-width: 560px) {
  .emis-row { grid-template-columns: 1fr; }
}

/* ------------------------------ QR placeholder -------------------------- */
.qr-box {
  flex: none;
  width: 62px; height: 62px;
  display: grid; place-items: center;
  border: 1px dashed var(--line);
  color: var(--text-muted);
  font-size: 11px; letter-spacing: 0.14em;
  background: rgba(201,162,39,0.05);
  margin-left: auto;
}

.map-box {
  margin-top: 26px;
  border: 1px solid var(--line-soft);
  min-height: 220px;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px) 0 0 / 44px 44px,
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px) 0 0 / 44px 44px,
    radial-gradient(400px 260px at 40% 40%, rgba(201,162,39,0.12), transparent 70%),
    #0c0e12;
  display: grid; place-items: center;
  text-align: center;
  padding: 30px;
}
.map-box .pin { width: 14px; height: 14px; background: var(--gold); transform: rotate(45deg); margin: 0 auto 14px; }
.map-box p { color: var(--text-muted); font-size: 14px; }

/* --------------------------------- Footer -------------------------------- */
.footer {
  border-top: 1px solid var(--line);
  background: #08090b;
  padding: 66px 0 26px;
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 46px; }
.footer h5 { font-size: 13px; letter-spacing: 0.2em; color: var(--gold-light); margin-bottom: 18px; text-transform: uppercase; font-weight: 600; }
.footer p, .footer li { font-size: 14.5px; color: var(--text-muted); }
.footer li { margin-bottom: 10px; }
.footer li a:hover, .footer p a:hover { color: var(--gold-light); }
.footer-bottom {
  border-top: 1px solid var(--line-soft);
  padding-top: 24px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 13px; color: var(--text-muted);
}

/* ------------------------------- Reveal anim ----------------------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* -------------------------------- Page head ------------------------------ */
.page-head {
  position: relative;
  padding: calc(var(--nav-h) + 92px) 0 72px;
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(760px 420px at 76% 10%, rgba(201,162,39,0.14), transparent 62%),
    linear-gradient(180deg, #0d0f13, #0a0b0d);
}
.page-head h1 { margin-bottom: 16px; }
.crumb { font-size: 13px; color: var(--text-muted); margin-bottom: 18px; letter-spacing: 0.06em; }
.crumb a:hover { color: var(--gold-light); }

/* -------------------------------- Responsive ----------------------------- */
@media (max-width: 1080px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(10,11,13,0.98);
    border-bottom: 1px solid var(--line);
    padding: 8px 32px 22px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s var(--ease);
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { padding: 13px 0; width: 100%; border-bottom: 1px solid var(--line-soft); }
  .nav-toggle { display: block; }
  .grid-3, .grid-2, .prod-cat { grid-template-columns: 1fr; }
  .prod-cat.reverse .pc-visual { order: 0; }
  .pc-visual { min-height: 260px; }
  .contact-wrap { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: 1fr; }
  .container, .nav-inner { padding: 0 22px; }
  .section { padding: 78px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
}
@media (max-width: 560px) {
  .field-row { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; }
  .form-box, .prod-card { padding: 28px 22px; }
}