/* ============================================================
   POWERMACH EXPORT — 机电设备外贸展示获客网站
   Design System: Industrial Export Style
   Colors: Deep Blue (trust) + Safety Orange (CTA)
   ============================================================ */

:root {
  /* Brand */
  --blue-900: #081e33;
  --blue-800: #0b2a4a;
  --blue-700: #103a63;
  --blue-600: #16497c;
  --blue-500: #1d5c9e;
  --blue-100: #e3eef9;
  --blue-50: #f2f7fc;

  --orange-600: #e8590c;
  --orange-500: #f76707;
  --orange-400: #ff922b;
  --orange-100: #ffe8d6;
  --orange-50: #fff4ec;

  /* Neutrals */
  --gray-900: #16202c;
  --gray-700: #3d4a5c;
  --gray-500: #64748b;
  --gray-300: #cbd5e1;
  --gray-200: #e2e8f0;
  --gray-100: #f1f5f9;
  --white: #ffffff;

  /* Semantic */
  --color-primary: var(--blue-800);
  --color-accent: var(--orange-500);
  --color-bg: var(--white);
  --color-bg-alt: var(--gray-100);
  --color-text: var(--gray-900);
  --color-text-soft: var(--gray-500);
  --color-border: var(--gray-200);

  /* Typography */
  --font-sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue",
    Arial, sans-serif;
  --font-display: "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial,
    sans-serif;

  /* Effects */
  --shadow-sm: 0 1px 3px rgba(8, 30, 51, 0.08);
  --shadow-md: 0 6px 18px rgba(8, 30, 51, 0.1);
  --shadow-lg: 0 16px 40px rgba(8, 30, 51, 0.16);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;

  /* Layout */
  --container: 1200px;
  --header-h: 76px;
}

/* ============ Reset & Base ============ */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
select,
textarea {
  font-family: inherit;
  font-size: 15px;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  line-height: 1.25;
  font-weight: 700;
  color: var(--color-text);
}

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

/* ============ Utilities ============ */
.text-center {
  text-align: center;
}

.section {
  padding: 88px 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--dark {
  background: var(--blue-900);
  color: #cfe0f2;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 3.4vw, 40px);
  margin-bottom: 16px;
  color: var(--blue-900);
}

.section--dark .section-title {
  color: var(--white);
}

.section-desc {
  font-size: 17px;
  color: var(--color-text-soft);
}

.section--dark .section-desc {
  color: #9fb6cf;
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15.5px;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: 8px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 6px 16px rgba(247, 103, 7, 0.35);
}

.btn-primary:hover {
  background: var(--orange-600);
}

.btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.85);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn-outline-dark {
  border: 2px solid var(--blue-700);
  color: var(--blue-700);
}

.btn-outline-dark:hover {
  background: var(--blue-50);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16.5px;
}

.btn-block {
  width: 100%;
}

/* ============ Header / Nav ============ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-h);
  display: flex;
  align-items: center;
}

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 800;
  color: var(--blue-900);
  letter-spacing: -0.01em;
}

.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--blue-700), var(--blue-500));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 18px;
}

.logo .logo-sub {
  display: block;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-top: -2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links {
  display: flex;
  gap: 26px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-700);
  padding: 6px 0;
  position: relative;
  transition: color 0.15s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2.5px;
  border-radius: 2px;
  background: var(--color-accent);
  transition: width 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--blue-800);
}

.nav-links a.active::after,
.nav-links a:hover::after {
  width: 100%;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--gray-100);
  border-radius: 999px;
  padding: 4px;
}

.lang-btn {
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  color: var(--gray-500);
  transition: all 0.15s ease;
}

.lang-btn.active {
  background: var(--blue-800);
  color: #fff;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--blue-900);
  border-radius: 2px;
  transition: all 0.2s ease;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 60%, var(--blue-600) 100%);
  color: #fff;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 46px 46px;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  right: -180px;
  top: -180px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(247, 103, 7, 0.22), transparent 65%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  padding: 110px 24px 96px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 48px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  color: #ffd8b4;
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #51cf66;
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero h1 {
  font-size: clamp(34px, 4.6vw, 54px);
  line-height: 1.15;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.hero h1 .accent {
  color: var(--orange-400);
}

.hero-lead {
  font-size: 18px;
  color: #c3d4e6;
  max-width: 520px;
  margin-bottom: 36px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  max-width: 600px;
}

.stat {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  color: #fff;
}

.stat-label {
  font-size: 12.5px;
  color: #9fb6cf;
  margin-top: 2px;
}

.hero-visual {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
}

.hero-art {
  width: 100%;
  max-width: 520px;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.35));
}

.hero-art-card {
  position: relative;
  width: 100%;
  max-width: 560px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 22px;
  padding: 18px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.hero-art-card svg {
  border-radius: 12px;
}

/* ============ Marquee brand strip ============ */
.brand-strip {
  background: var(--blue-900);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 18px 0;
  overflow: hidden;
}

.brand-strip-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  gap: 32px;
  flex-wrap: wrap;
}

.brand-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #8aa5c2;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand-item svg {
  width: 22px;
  height: 22px;
  color: var(--orange-400);
}

/* ============ Product category cards ============ */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
}

.cat-card {
  position: relative;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 26px 26px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  display: block;
}

.cat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-100);
}

.cat-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: var(--blue-50);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--blue-700);
}

.cat-icon svg {
  width: 34px;
  height: 34px;
}

.cat-card h3 {
  font-size: 19px;
  margin-bottom: 8px;
  color: var(--blue-900);
}

.cat-card p {
  font-size: 14.5px;
  color: var(--color-text-soft);
  margin-bottom: 16px;
}

.cat-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
}

.cat-link svg {
  width: 16px;
  height: 16px;
  transition: transform 0.15s ease;
}

.cat-card:hover .cat-link svg {
  transform: translateX(4px);
}

/* ============ Feature / advantage cards ============ */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 24px;
}

.feat-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.feat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.feat-num {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 800;
  color: var(--blue-100);
  margin-bottom: 12px;
  line-height: 1;
}

.feat-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--blue-900);
}

.feat-card p {
  font-size: 14.5px;
  color: var(--color-text-soft);
}

/* ============ Process steps ============ */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  counter-reset: step;
}

.step {
  position: relative;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 34px 26px 28px;
  border: 1px solid var(--color-border);
}

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 800;
  color: var(--color-accent);
  opacity: 0.25;
  position: absolute;
  top: 20px;
  right: 22px;
}

.step-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--orange-50);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange-600);
  margin-bottom: 16px;
}

.step-icon svg {
  width: 26px;
  height: 26px;
}

.step h3 {
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--blue-900);
}

.step p {
  font-size: 14px;
  color: var(--color-text-soft);
}

/* ============ Testimonials ============ */
.tst-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.tst-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.tst-stars {
  color: #f59f00;
  font-size: 15px;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.tst-text {
  font-size: 15px;
  color: var(--gray-700);
  font-style: italic;
  margin-bottom: 18px;
}

.tst-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tst-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--blue-100);
  color: var(--blue-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
}

.tst-name {
  font-weight: 700;
  font-size: 14.5px;
  color: var(--blue-900);
}

.tst-role {
  font-size: 13px;
  color: var(--color-text-soft);
}

/* ============ CTA band ============ */
.cta-band {
  background: linear-gradient(120deg, var(--orange-600), var(--orange-500));
  color: #fff;
  padding: 64px 0;
}

.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-band h2 {
  font-size: clamp(24px, 3vw, 34px);
  color: #fff;
  margin-bottom: 8px;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 16.5px;
}

.btn-white {
  background: #fff;
  color: var(--orange-600);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
}

.btn-white:hover {
  background: var(--orange-50);
}

/* ============ Footer ============ */
.footer {
  background: var(--blue-900);
  color: #9fb6cf;
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 18px;
}

.footer .logo {
  color: #fff;
  margin-bottom: 14px;
}

.footer-about {
  font-size: 14.5px;
  line-height: 1.7;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 14.5px;
  color: #9fb6cf;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: var(--orange-400);
}

.footer-contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14.5px;
  margin-bottom: 12px;
}

.footer-contact svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--orange-400);
  margin-top: 3px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  font-size: 13.5px;
  color: #6f89a4;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============ Floating WhatsApp ============ */
.wa-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 26px rgba(37, 211, 102, 0.45);
  transition: transform 0.2s ease;
}

.wa-float:hover {
  transform: scale(1.08);
}

.wa-float svg {
  width: 30px;
  height: 30px;
  fill: #fff;
}

.wa-float::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid #25d366;
  animation: wa-ring 2s infinite;
}

@keyframes wa-ring {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.45); opacity: 0; }
}

/* ============ Page hero (inner pages) ============ */
.page-hero {
  background: linear-gradient(135deg, var(--blue-900), var(--blue-600));
  color: #fff;
  padding: 72px 0 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 46px 46px;
}

.page-hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.page-hero h1 {
  color: #fff;
  font-size: clamp(30px, 4vw, 44px);
  margin-bottom: 12px;
}

.page-hero p {
  color: #c3d4e6;
  font-size: 17px;
  max-width: 640px;
  margin: 0 auto;
}

.breadcrumb {
  margin-top: 18px;
  font-size: 13.5px;
  color: #9fb6cf;
}

.breadcrumb a {
  color: var(--orange-400);
}

/* ============ Products ============ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 44px;
}

.filter-chip {
  padding: 9px 20px;
  border-radius: 999px;
  border: 1.5px solid var(--gray-300);
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  transition: all 0.15s ease;
}

.filter-chip:hover {
  border-color: var(--blue-600);
  color: var(--blue-700);
}

.filter-chip.active {
  background: var(--blue-800);
  border-color: var(--blue-800);
  color: #fff;
}

.prod-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 26px;
}

.prod-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.prod-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.prod-thumb {
  background: linear-gradient(160deg, var(--blue-50), var(--gray-100));
  padding: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  position: relative;
}

.prod-thumb svg {
  width: 78%;
  max-height: 190px;
  transition: transform 0.3s ease;
}

.prod-card:hover .prod-thumb svg {
  transform: scale(1.05);
}

.prod-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--orange-500);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.03em;
}

.prod-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.prod-model {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.prod-body h3 {
  font-size: 19px;
  color: var(--blue-900);
  margin-bottom: 8px;
}

.prod-desc {
  font-size: 14px;
  color: var(--color-text-soft);
  margin-bottom: 14px;
  flex: 1;
}

.prod-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-bottom: 18px;
  font-size: 13px;
  color: var(--gray-500);
}

.prod-specs span::before {
  content: "•";
  color: var(--color-accent);
  margin-right: 6px;
  font-weight: 800;
}

.prod-actions {
  display: flex;
  gap: 10px;
}

.btn-sm {
  padding: 10px 18px;
  font-size: 14px;
}

/* ============ Modal ============ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(8, 30, 51, 0.65);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 920px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg);
  animation: modal-in 0.25s ease;
}

@keyframes modal-in {
  from { transform: translateY(24px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--gray-700);
  z-index: 5;
  transition: background 0.15s ease;
}

.modal-close:hover {
  background: var(--gray-200);
}

.modal-body {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
}

.modal-thumb {
  background: linear-gradient(160deg, var(--blue-50), var(--gray-100));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.modal-thumb svg {
  width: 90%;
}

.modal-info {
  padding: 36px 34px;
}

.modal-info .prod-model {
  margin-bottom: 8px;
}

.modal-info h3 {
  font-size: 26px;
  color: var(--blue-900);
  margin-bottom: 12px;
}

.modal-info .prod-desc {
  font-size: 15px;
  margin-bottom: 22px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 14px;
}

.spec-table th,
.spec-table td {
  padding: 10px 12px;
  border: 1px solid var(--gray-200);
  text-align: left;
}

.spec-table th {
  background: var(--blue-50);
  color: var(--blue-800);
  font-weight: 700;
  width: 42%;
}

.spec-table td {
  color: var(--gray-700);
}

.spec-table tr:nth-child(even) td {
  background: var(--gray-100);
}

.modal-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.modal-h4 {
  font-size: 15px;
  color: var(--blue-800);
  margin: 20px 0 10px;
  letter-spacing: 0.02em;
}

/* ============ About page ============ */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about-intro h2 {
  font-size: clamp(24px, 2.8vw, 32px);
  color: var(--blue-900);
  margin-bottom: 18px;
}

.about-intro p {
  color: var(--gray-700);
  margin-bottom: 14px;
  font-size: 15.5px;
}

.about-visual {
  background: linear-gradient(160deg, var(--blue-50), var(--gray-100));
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual svg {
  width: 92%;
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.cert-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px 20px;
  text-align: center;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.cert-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.cert-badge {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--blue-100);
  color: var(--blue-700);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}

.cert-badge svg {
  width: 28px;
  height: 28px;
}

.cert-card h3 {
  font-size: 17px;
  color: var(--blue-900);
  margin-bottom: 4px;
}

.cert-card p {
  font-size: 13.5px;
  color: var(--color-text-soft);
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 6px;
  bottom: 6px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(var(--blue-100), var(--orange-100));
}

.tl-item {
  position: relative;
  margin-bottom: 34px;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 6px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--orange-500);
  box-shadow: 0 0 0 4px var(--orange-100);
}

.tl-year {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--blue-700);
  margin-bottom: 4px;
}

.tl-title {
  font-weight: 700;
  font-size: 15.5px;
  color: var(--blue-900);
  margin-bottom: 4px;
}

.tl-desc {
  font-size: 14px;
  color: var(--color-text-soft);
}

/* ============ Contact page ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
}

.contact-cards {
  display: grid;
  gap: 16px;
}

.contact-card {
  display: flex;
  gap: 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.contact-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--blue-50);
  color: var(--blue-700);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
}

.contact-card h3 {
  font-size: 16px;
  color: var(--blue-900);
  margin-bottom: 4px;
}

.contact-card p,
.contact-card a {
  font-size: 14.5px;
  color: var(--gray-700);
  word-break: break-all;
}

.contact-card a:hover {
  color: var(--color-accent);
}

/* Form */
.form-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 34px;
  box-shadow: var(--shadow-md);
}

.form-card h2 {
  font-size: 24px;
  color: var(--blue-900);
  margin-bottom: 6px;
}

.form-sub {
  font-size: 14.5px;
  color: var(--color-text-soft);
  margin-bottom: 26px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-field.full {
  grid-column: 1 / -1;
}

.form-field label {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
}

.form-field label .req {
  color: var(--color-accent);
}

.form-field input,
.form-field select,
.form-field textarea {
  border: 1.5px solid var(--gray-300);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--gray-900);
  background: var(--white);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  width: 100%;
}

.form-field textarea {
  resize: vertical;
  min-height: 110px;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(29, 92, 158, 0.14);
}

.form-field input.invalid,
.form-field select.invalid,
.form-field textarea.invalid {
  border-color: #e03131;
  box-shadow: 0 0 0 3px rgba(224, 49, 49, 0.12);
}

.form-err {
  font-size: 12.5px;
  color: #e03131;
  display: none;
}

.form-err.show {
  display: block;
}

.form-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.btn-wa {
  background: #25d366;
  color: #fff;
}

.btn-wa:hover {
  background: #1eb85a;
}

.btn-mail {
  background: var(--blue-800);
  color: #fff;
}

.btn-mail:hover {
  background: var(--blue-700);
}

.form-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--color-text-soft);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ============ Reveal animation ============ */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .nav-links {
    gap: 18px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    padding-top: 76px;
    gap: 40px;
  }
  .hero-visual {
    order: -1;
  }
  .hero-art {
    max-width: 400px;
  }
  .about-intro {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .modal-body {
    grid-template-columns: 1fr;
  }
  .modal-thumb {
    padding: 30px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }
  .header-cta .btn {
    display: none;
  }
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 20px 24px 28px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform 0.25s ease;
    gap: 22px;
    z-index: 99;
  }
  .nav.open {
    transform: translateY(0);
  }
  .nav-links {
    flex-direction: column;
    gap: 6px;
  }
  .nav-links a {
    padding: 12px 0;
    font-size: 17px;
    border-bottom: 1px solid var(--gray-100);
  }
  .nav-links a::after {
    display: none;
  }
  .lang-switch {
    align-self: flex-start;
  }
  .nav-toggle {
    display: flex;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .brand-strip-inner {
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .cta-band-inner {
    flex-direction: column;
    text-align: center;
  }
  .page-hero {
    padding: 56px 0 48px;
  }
}

@media (max-width: 480px) {
  .hero-inner {
    padding: 56px 20px 64px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .prod-grid {
    grid-template-columns: 1fr;
  }
  .cat-grid {
    grid-template-columns: 1fr 1fr;
  }
  .modal-info {
    padding: 26px 20px;
  }
}