/* ========================================
   Gooway Technology — Global Styles
   3D Printing Filament Manufacturer
======================================== */

:root {
  --primary: #0a2540;
  --secondary: #1a3a5c;
  --accent: #e8541a;
  --accent-light: #ff6b35;
  --blue: #1a73e8;
  --text: #1e3a52;
  --text-light: #5a7a96;
  --bg: #e8f4fd;
  --white: #f5faff;
  --border: #c8dff0;
  --success: #38a169;
  --card-shadow: 0 4px 20px rgba(10,37,64,0.08);
  --transition: all 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: #f0f8ff;
  line-height: 1.7;
  font-size: 16px;
}

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

img { max-width: 100%; }

/* ---- Typography ---- */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; line-height: 1.25; }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); font-weight: 600; }
h4 { font-size: 1.1rem; font-weight: 600; }

p { color: var(--text-light); line-height: 1.8; }

.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.75rem;
}

.section-title { color: var(--primary); margin-bottom: 1rem; }
.section-desc { color: var(--text-light); font-size: 1.05rem; max-width: 640px; margin: 0 auto; }

/* ---- Layout ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 56px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover { background: #c8441a; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,84,26,0.35); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.7);
}
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: white; }

.btn-dark {
  background: var(--primary);
  color: white;
}
.btn-dark:hover { background: #0d3b6e; transform: translateY(-2px); }

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}
.btn-ghost:hover { background: var(--accent); color: white; }

/* ---- Navigation ---- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10, 37, 64, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  transition: var(--transition);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}


.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 导航栏 logo 图片：深色背景下反色为白色 */
.nav-logo img {
  filter: brightness(0) invert(1);
  transition: opacity 0.2s;
}
.nav-logo:hover img {
  opacity: 0.85;
}



.nav-logo-icon {
  width: 36px; height: 36px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: white;
  font-size: 1.1rem;
}

.nav-logo-text { color: white; font-weight: 700; font-size: 1.15rem; }
.nav-logo-sub { color: rgba(255,255,255,0.45); font-size: 0.7rem; letter-spacing: 0.1em; display: block; margin-top: -3px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.75);
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 1.05rem;
  font-weight: 500;
  transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: white; background: rgba(255,255,255,0.08); }

.nav-cta { margin-left: 12px; }
.nav-cta .btn { padding: 10px 22px; font-size: 0.88rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: white;
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- Hero ---- */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0a2540 0%, #0d3b6e 40%, #1155a0 100%);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 70px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(26,115,232,0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -15%; left: -5%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(232,84,26,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative; z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(232,84,26,0.15);
  border: 1px solid rgba(232,84,26,0.35);
  color: #ff8c5a;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

.hero-title {
  color: white;
  margin-bottom: 20px;
}

.hero-title .highlight {
  color: var(--accent-light);
  position: relative;
}

.hero-desc {
  color: rgba(255,255,255,0.65);
  font-size: 1.1rem;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.hero-stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: white;
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-spool-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  transform: perspective(800px) rotateY(-8deg) rotateX(5deg);
}

.spool-card {
  border-radius: 12px;
  padding: 20px 12px;
  text-align: center;
  transition: var(--transition);
}
.spool-card:hover { transform: translateY(-4px); }

.spool-circle {
  width: 64px; height: 64px;
  border-radius: 50%;
  margin: 0 auto 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 700;
  color: white;
  letter-spacing: 0.05em;
  border: 4px solid rgba(255,255,255,0.25);
  position: relative;
}

.spool-circle::after {
  content: '';
  position: absolute;
  width: 20px; height: 20px;
  background: rgba(255,255,255,0.3);
  border-radius: 50%;
}

.spool-name { font-size: 0.72rem; font-weight: 600; color: rgba(255,255,255,0.85); }
.spool-spec { font-size: 0.65rem; color: rgba(255,255,255,0.45); }

/* ---- Trust Bar ---- */
.trust-bar {
  background: var(--primary);
  padding: 28px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.trust-items {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 22px;
  border-right: 1px solid rgba(255,255,255,0.1);
}
.trust-item:last-child { border-right: none; }

.trust-icon { font-size: 1.5rem; }

.trust-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: white;
  line-height: 1.1;
}
.trust-label { font-size: 0.72rem; color: rgba(255,255,255,0.45); }

/* ---- Intro Section ---- */
.intro-section { background: #ffffff; }

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.intro-visual {
  position: relative;
}

.intro-img-bg {
  background: linear-gradient(135deg, #0a2540, #0d3b6e);
  border-radius: 20px;
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.mini-stat {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 20px;
}
.mini-stat-num { font-size: 1.6rem; font-weight: 800; color: var(--accent-light); }
.mini-stat-label { font-size: 0.75rem; color: rgba(255,255,255,0.5); margin-top: 4px; }

.intro-content .section-label { text-align: left; }
.intro-content h2 { margin-bottom: 20px; }
.intro-content p { margin-bottom: 16px; }

.intro-features { margin: 28px 0; display: flex; flex-direction: column; gap: 14px; }

.intro-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 500;
}
.feature-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ---- Products ---- */
.products-section { background: var(--bg); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.product-card {
  background: #ffffff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,0.12); }

.product-color-bar {
  height: 6px;
}

.product-card-top {
  padding: 28px 24px 20px;
}

.product-spool {
  width: 80px; height: 80px;
  border-radius: 50%;
  margin: 0 0 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: white;
  border: 5px solid rgba(255,255,255,0.3);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  position: relative;
}
.product-spool::after {
  content: '';
  position: absolute;
  width: 22px; height: 22px;
  background: rgba(255,255,255,0.3);
  border-radius: 50%;
}

.product-tag {
  display: inline-block;
  background: rgba(232,84,26,0.1);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: 50px;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.product-card h3 { margin-bottom: 8px; color: var(--primary); }
.product-card p { font-size: 0.88rem; line-height: 1.6; }

.product-specs {
  padding: 16px 24px;
  background: var(--bg);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
}
.spec-key { color: var(--text-light); }
.spec-val { font-weight: 600; color: var(--text); }

.product-card-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

.product-card-footer a {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.product-card-footer a:hover { gap: 10px; }

/* ---- Why Choose Us ---- */
.why-section { background: #ffffff; }

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.why-card {
  padding: 36px 28px;
  border-radius: 16px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.why-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: var(--transition);
}
.why-card:hover { border-color: var(--accent); box-shadow: 0 8px 32px rgba(232,84,26,0.1); }
.why-card:hover::before { transform: scaleY(1); }

.why-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: rgba(232,84,26,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.why-card h3 { color: var(--primary); margin-bottom: 10px; }

/* ---- Certifications ---- */
.cert-section {
  background: var(--primary);
  padding: 60px 0;
}

.cert-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
}

.cert-text h2 { color: white; margin-bottom: 12px; }
.cert-text p { color: rgba(255,255,255,0.55); max-width: 480px; }

.cert-badges {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.cert-badge {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  padding: 16px 24px;
  text-align: center;
  min-width: 120px;
}
.cert-badge-icon { font-size: 1.6rem; margin-bottom: 6px; }
.cert-badge-name { font-size: 0.8rem; font-weight: 700; color: white; }
.cert-badge-sub { font-size: 0.68rem; color: rgba(255,255,255,0.4); margin-top: 2px; }

/* ---- CTA Banner ---- */
.cta-section {
  background: linear-gradient(135deg, var(--accent) 0%, #c8441a 100%);
  padding: 72px 0;
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 48px;
  align-items: center;
}

.cta-divider { background: rgba(255,255,255,0.25); height: 100%; }

.cta-box h3 { color: white; font-size: 1.4rem; margin-bottom: 12px; }
.cta-box p { color: rgba(255,255,255,0.75); margin-bottom: 24px; }

.btn-white {
  background: white;
  color: var(--accent);
  font-weight: 700;
}
.btn-white:hover { background: #f0f0f0; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

/* ---- Testimonials ---- */
.testimonials-section { background: var(--bg); }

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border);
  position: relative;
}

.testimonial-quote {
  font-size: 2.5rem;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
  font-family: Georgia, serif;
}

.testimonial-card p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: white;
}
.author-name { font-weight: 600; font-size: 0.9rem; color: var(--primary); }
.author-role { font-size: 0.78rem; color: var(--text-light); }

.testimonial-stars { color: #f6c90e; font-size: 0.85rem; margin-bottom: 4px; }

/* ---- Footer ---- */
.footer {
  background: var(--primary);
  color: rgba(255,255,255,0.6);
}

.footer-top {
  padding: 64px 0 48px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-brand { }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo-icon {
  width: 36px; height: 36px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: white;
}
.footer-logo-text { color: white; font-weight: 700; font-size: 1.1rem; }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; max-width: 280px; margin-bottom: 20px; }

.footer-contacts { display: flex; flex-direction: column; gap: 8px; }
.footer-contact-item { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; }
.footer-contact-item span:first-child { font-size: 1rem; }
.footer-contact-item a { color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-contact-item a:hover { color: var(--accent-light); }

.footer-col h4 { color: white; font-size: 0.9rem; font-weight: 600; margin-bottom: 16px; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 0.85rem; color: rgba(255,255,255,0.5); transition: var(--transition); }
.footer-links a:hover { color: white; }

.footer-bottom {
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { color: rgba(255,255,255,0.4); transition: var(--transition); }
.footer-bottom-links a:hover { color: white; }

/* ---- Page Hero (inner pages) ---- */
.page-hero {
  background: linear-gradient(135deg, #0a2540 0%, #0d3b6e 100%);
  padding: 130px 0 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 600px; height: 300px;
  background: radial-gradient(ellipse, rgba(232,84,26,0.12) 0%, transparent 70%);
}
.page-hero h1 { color: white; margin-bottom: 16px; position: relative; }
.page-hero p { color: rgba(255,255,255,0.6); font-size: 1.1rem; max-width: 600px; margin: 0 auto; position: relative; }

/* ---- WhatsApp Float ---- */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px; height: 56px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 4px 20px rgba(37,211,102,0.45);
  z-index: 999;
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
}
.whatsapp-float:hover { transform: scale(1.1); box-shadow: 0 8px 32px rgba(37,211,102,0.55); }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hero-content { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .intro-grid { grid-template-columns: 1fr; }
  .cert-inner { grid-template-columns: 1fr; }
  .cta-grid { grid-template-columns: 1fr; }
  .cta-divider { display: none; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .trust-items { justify-content: flex-start; }
  .trust-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); width: 100%; }
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .product-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}

/* ---- Animations ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-up { animation: fadeUp 0.6s ease both; }
.fade-up-1 { animation-delay: 0.1s; }
.fade-up-2 { animation-delay: 0.2s; }
.fade-up-3 { animation-delay: 0.3s; }
.fade-up-4 { animation-delay: 0.4s; }

/* ---- Utility ---- */
.text-center { text-align: center; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.gap-y-2 > * + * { margin-top: 8px; }