/* ========================================
   G-MEOH B2C 优化样式
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  /* 颜色系统 - B2B 工业风格 */
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --paper: #f8fafc;
  --white: #ffffff;
  --field: #f1f5f9;
  
  /* B2B 工业色 - 深蓝专业工具风格 */
  --green: #005691;
  --green-dark: #07304f;
  --green-light: #e7f1f8;
  --mint: #00a9c7;
  
  /* 强调色 - 克制红色用于重点提示 */
  --accent: #d71920;
  --accent-dark: #9f1117;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12);
  
  /* 圆角 */
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

/* ========================================
   Global Label System - Industry Application
   Keeps every small label aligned with the 2B logo palette.
   ======================================== */

.b2b-eyebrow,
.eyebrow,
.product-badge,
.cert-badge strong,
.stat-label,
.app-badge,
.spec-label,
.type-line,
.spec-tags span,
.image-markers span,
.video-points span,
.insight-card span {
  background: var(--green) !important;
  color: #ffffff !important;
  border-color: var(--green) !important;
}

.b2b-secondary,
.quote-note,
.resource-row a,
.contact-info strong {
  background: #ffffff;
  color: var(--green-dark) !important;
  border-color: var(--green-dark);
}

.match-meta span {
  color: var(--green-dark) !important;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ========================================
   链接样式 - 移除下划线
   ======================================== */

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--green);
}

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

/* ========================================
   Header 导航栏
   ======================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--ink);
}

.brand-logo {
  height: 66px;
  width: 270px;
  object-fit: contain;
}

.language-switch {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem;
  border: 1px solid rgba(0, 153, 153, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-sm);
  flex: 0 0 auto;
}

.language-switch a {
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  font-size: 1.05rem;
  line-height: 1;
  color: var(--muted);
}

.language-switch a.active {
  background: var(--green-light);
  box-shadow: inset 0 0 0 1px rgba(0, 153, 153, 0.24);
}

.language-switch span {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.portal-switch {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.45rem;
  padding: 0.65rem 1rem;
  border-radius: 999px;
  border: 1px solid #009999;
  background: #006b68;
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 800;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}

.portal-switch:hover {
  border-color: #009999;
  background: #009999;
  color: #ffffff;
}

.contact-content {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(420px, 1.12fr);
  gap: 2rem;
  align-items: start;
}

.contact-info {
  display: grid;
  gap: 1rem;
}

.contact-info h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
}

.contact-info > p:not(.eyebrow) {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.contact-methods {
  display: grid;
  gap: .85rem;
  margin-top: 1rem;
}

.contact-methods div {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
}

.contact-methods strong {
  display: block;
  color: var(--ink);
  margin-bottom: .25rem;
}

.contact-methods p {
  color: var(--green-dark);
  font-weight: 900;
}

.contact-methods small {
  color: var(--muted);
}

.contact-form {
  display: grid;
  gap: 1rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
  box-shadow: 0 18px 48px rgba(7, 48, 79, .08);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.contact-form label {
  display: grid;
  gap: .42rem;
  color: var(--ink);
  font-weight: 850;
  font-size: .92rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: .86rem .95rem;
  background: #fbfdff;
  color: var(--ink);
  font: inherit;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(0, 86, 145, .18);
  border-color: var(--green);
}

.contact-form button {
  border: 0;
  cursor: pointer;
}

.form-note {
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.55;
}

.brand > span {
  display: none;
}

.specs-overlay.compact {
  position: static;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
  margin-top: 0.75rem;
  box-shadow: none;
}

.specs-overlay.compact .spec-item {
  min-width: 0;
  padding: 0.48rem 0.78rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.specs-overlay.compact .spec-item span {
  display: none;
}

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

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex: 1;
  justify-content: center;
}

.main-nav a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--muted);
  padding: 0.5rem 0;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transition: transform 0.2s ease;
}

.main-nav a:hover::after {
  transform: scaleX(1);
}

/* 下拉菜单 */
.dropdown {
  position: relative;
}

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 0.5rem;
  min-width: 200px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  z-index: 50;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown-content a {
  display: block;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  color: var(--ink);
  font-weight: 500;
}

.dropdown-content a::after {
  display: none;
}

.dropdown-content a:hover {
  background: var(--field);
  color: var(--green);
}

.dropdown > a::after {
  content: '▼';
  font-size: 0.7em;
  margin-left: 0.35rem;
  opacity: 0.6;
}

/* 购物车按钮 */
.cart-button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: var(--white);
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s ease;
}

.cart-button:hover {
  border-color: var(--green);
  background: var(--green-light);
}

.cart-button strong {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  background: var(--green);
  color: white;
  border-radius: 50%;
  font-size: 0.75rem;
}

.cart-icon {
  width: 20px;
  height: 16px;
  border: 2px solid currentColor;
  border-top: 0;
  position: relative;
}

.cart-icon::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 3px;
  width: 10px;
  height: 8px;
  border: 2px solid currentColor;
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
}

/* ========================================
   Hero 区域
   ======================================== */

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 5rem 3rem;
  min-height: 85vh;
  background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 100%);
}

.hero-copy {
  max-width: 600px;
}

.eyebrow {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--green-dark);
  color: #ffffff;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 1.5rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-copy > p {
  font-size: 1.125rem;
  color: var(--muted);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.primary-link,
.secondary-link,
.add-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}

.primary-link {
  background: var(--green);
  color: white;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.primary-link:hover {
  background: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.secondary-link {
  background: var(--white);
  color: var(--ink);
  border: 1.5px solid var(--line);
}

.secondary-link:hover {
  border-color: var(--green);
  background: var(--field);
}

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

.hero-media img {
  width: 100%;
  max-width: 600px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.hero-product-card {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 280px;
}

.hero-product-card span {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.hero-product-card strong {
  display: block;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.hero-product-card small {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
}

/* ========================================
   Trust Strip 信任标志
   ======================================== */

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.trust-strip > div {
  background: var(--white);
  padding: 2rem 1.5rem;
  text-align: center;
}

.trust-icon {
  display: block;
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.trust-strip strong {
  display: block;
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  color: var(--ink);
}

.trust-strip span {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
}

/* ========================================
   Section 通用样式
   ======================================== */

.category-band,
.detail-band,
.reviews-section,
.app-section,
.support-band,
.faq-section,
.newsletter-section {
  padding: 5rem 3rem;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 3rem;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.section-heading p {
  font-size: 1.125rem;
  color: var(--muted);
  line-height: 1.7;
}

/* ========================================
   Product Grid 产品网格
   ======================================== */

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--green);
}

.product-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--green-dark);
  color: #ffffff;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 700;
  z-index: 10;
}

.product-visual {
  position: relative;
  background: var(--field);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-visual img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.product-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.product-body > p {
  color: var(--muted);
  margin-bottom: 1rem;
  flex: 1;
}

.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.product-features span {
  padding: 0.375rem 0.75rem;
  background: var(--field);
  border-radius: 6px;
  font-size: 0.875rem;
  color: var(--ink);
  font-weight: 500;
}

.price-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.price-line strong {
  font-size: 1.75rem;
  color: var(--green);
}

.add-button {
  padding: 0.75rem 1.5rem;
  background: var(--green);
  color: white;
  font-size: 0.875rem;
}

.add-button:hover {
  background: var(--green-dark);
}

.vat-note {
  font-size: 0.75rem;
  color: var(--muted);
}

/* ========================================
   Detail Band 详情区
   ======================================== */

.detail-band {
  background: var(--ink);
  color: white;
}

.detail-band .eyebrow {
  background: var(--green-dark);
  color: #ffffff;
}

.detail-band h2,
.detail-band h3 {
  color: white;
}

.detail-band p {
  color: rgba(255, 255, 255, 0.8);
}

.feature-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: start;
}

.feature-layout img {
  width: 100%;
  border-radius: var(--radius-lg);
}

.feature-list {
  display: grid;
  gap: 1.5rem;
}

.feature-list article {
  background: rgba(255, 255, 255, 0.05);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-list h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

/* ========================================
   Reviews 评论区
   ======================================== */

.reviews-section {
  background: var(--field);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.review-card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
}

.review-stars {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.review-card h3 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
}

.review-card > p {
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.review-author strong {
  display: block;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.review-author span {
  font-size: 0.875rem;
  color: var(--muted);
}

/* ========================================
   App Section
   ======================================== */

.app-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.app-features {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

.app-feature {
  display: flex;
  gap: 1rem;
  align-items: start;
}

.feature-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.app-feature strong {
  display: block;
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.app-feature p {
  color: var(--muted);
  font-size: 0.875rem;
}

.phone-mockup {
  background: var(--field);
  padding: 2rem;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-mockup img {
  max-width: 300px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* ========================================
   Support Grid
   ======================================== */

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.support-grid article {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  text-align: center;
}

.support-grid h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.support-grid p {
  color: var(--muted);
  margin-bottom: 1rem;
}

.support-grid strong {
  display: block;
  font-size: 1.125rem;
  color: var(--green);
}

/* ========================================
   FAQ
   ======================================== */

.faq-section {
  background: var(--white);
}

details {
  background: var(--field);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
  border: 1px solid var(--line);
}

summary {
  font-weight: 700;
  font-size: 1.125rem;
  cursor: pointer;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::before {
  content: '→';
  display: inline-block;
  margin-right: 0.75rem;
  transition: transform 0.2s;
}

details[open] summary::before {
  transform: rotate(90deg);
}

details p {
  margin-top: 1rem;
  color: var(--muted);
  line-height: 1.7;
}

/* ========================================
   Newsletter
   ======================================== */

.newsletter-section {
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
  color: white;
  text-align: center;
}

.newsletter-content h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.newsletter-content > p {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: 2rem;
}

.newsletter-form {
  display: flex;
  gap: 1rem;
  max-width: 500px;
  margin: 0 auto 1rem;
}

.newsletter-form input {
  flex: 1;
  padding: 1rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
}

.newsletter-form button {
  padding: 1rem 2rem;
  background: white;
  color: var(--green);
  border: none;
  border-radius: var(--radius);
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.newsletter-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.newsletter-content small {
  opacity: 0.8;
  font-size: 0.875rem;
}

/* ========================================
   Footer
   ======================================== */

.site-footer {
  background: var(--ink);
  color: white;
  padding: 4rem 3rem 2rem;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

.footer-brand strong {
  display: block;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1.5rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  font-size: 1.5rem;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.social-links a:hover {
  opacity: 1;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.footer-links strong {
  display: block;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.footer-links a {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

/* ========================================
   B2B Storage & Knowledge Sections
   ======================================== */

.industrial-storage-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 3rem;
  align-items: center;
  padding: 5rem 3rem;
  background: #0b1220;
  color: white;
}

.industrial-storage-copy {
  max-width: 620px;
}

.industrial-storage-copy h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.14;
  margin-bottom: 1.25rem;
}

.industrial-storage-copy > p {
  color: rgba(255, 255, 255, 0.76);
  font-size: 1.05rem;
  margin-bottom: 1.75rem;
}

.industrial-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 2rem 0;
}

.industrial-metrics div {
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
}

.industrial-metrics strong {
  display: block;
  color: var(--mint);
  font-size: 1.35rem;
  line-height: 1.1;
  margin-bottom: 0.35rem;
}

.industrial-metrics span {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.82rem;
}

.industrial-storage-media img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.device-video-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 3rem;
  align-items: center;
  padding: 5rem 3rem;
  background: linear-gradient(135deg, #f8fafc 0%, #eef7f7 100%);
}

.device-video-copy h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  margin-bottom: 1rem;
}

.device-video-copy > p {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 640px;
}

.video-points {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.video-points span {
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  background: var(--green-dark);
  border: 1px solid var(--green-dark);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.88rem;
}

.device-video-frame {
  position: relative;
  padding: 1rem;
  border-radius: 22px;
  background: #0b1220;
  box-shadow: var(--shadow-xl);
}

.device-video-frame video {
  width: 100%;
  max-height: 620px;
  display: block;
  border-radius: 14px;
  background: #05070c;
  object-fit: contain;
}

.video-caption {
  position: absolute;
  left: 2rem;
  right: 2rem;
  bottom: 2rem;
  padding: 0.95rem 1.2rem;
  border-radius: 12px;
  background: rgba(0, 153, 153, 0.86);
  color: #fff;
  font-size: 1rem;
  line-height: 1.45;
  font-weight: 700;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.28);
}

.compact-resources {
  padding: 5rem 3rem;
  background: var(--white);
}

.insight-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.25rem;
}

.insight-card {
  display: flex;
  min-height: 290px;
  flex-direction: column;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper);
}

.insight-card span {
  width: fit-content;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--green-dark);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.insight-card h3 {
  font-size: 1.15rem;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.insight-card p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.insight-card a {
  margin-top: auto;
  color: var(--green-dark);
  font-weight: 800;
}

.video-card {
  background: linear-gradient(145deg, #0f172a 0%, #172033 100%);
  color: white;
  border-color: rgba(255, 255, 255, 0.08);
}

.video-card p {
  color: rgba(255, 255, 255, 0.72);
}

.video-card a {
  color: var(--mint);
}

.compact-proof {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.compact-proof .case-study-content {
  align-items: stretch;
}

.compact-proof .case-study-details,
.compact-proof .case-study-quote {
  min-height: auto;
}

/* ========================================
   响应式设计
   ======================================== */

@media (max-width: 1024px) {
  .hero,
  .feature-layout,
  .app-section,
  .industrial-storage-section,
  .device-video-section {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .insight-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  
  .footer-main {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .site-header {
    flex-wrap: wrap;
    padding: 1rem;
  }
  
  .main-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    gap: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
  }
  
  .trust-strip {
    grid-template-columns: 1fr;
  }
  
  .product-grid,
  .reviews-grid,
  .support-grid,
  .insight-grid {
    grid-template-columns: 1fr;
  }

  .industrial-storage-section,
  .device-video-section,
  .compact-resources {
    padding: 3.5rem 1.25rem;
  }

  .industrial-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  
  .footer-links {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* ========================================
   手机端增强：B2B 页面可读、可点、单列
   ======================================== */

@media (max-width: 640px) {
  html,
  body {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }

  body {
    background: #f7fafa;
  }

  .site-header {
    padding: 0.75rem 1rem;
    gap: 0.75rem;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  }

  .brand-logo {
    height: 48px;
    width: 190px;
  }

  .cta-button {
    margin-left: auto;
    padding: 0.65rem 0.8rem;
    font-size: 0.86rem;
  }

  .main-nav {
    gap: 0.9rem;
    padding-top: 0.75rem;
    padding-bottom: 0.25rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .main-nav::-webkit-scrollbar {
    display: none;
  }

  .main-nav a,
  .dropdown {
    flex: 0 0 auto;
    white-space: nowrap;
  }

  .main-nav a {
    font-size: 0.9rem;
    color: #374151;
  }

  .dropdown-content {
    min-width: 230px;
  }

  .hero {
    min-height: auto;
    padding: 2rem 1rem 2.5rem;
    gap: 1.5rem;
    background: linear-gradient(180deg, #ffffff 0%, #eefafa 100%);
  }

  h1 {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .hero-copy > p,
  .section-heading p {
    font-size: 1rem;
    line-height: 1.6;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .primary-link,
  .secondary-link,
  .add-button,
  .cta-button {
    min-height: 48px;
  }

  .hero-media img {
    border-radius: 14px;
    box-shadow: 0 18px 38px rgba(15, 23, 42, 0.12);
  }

  .hero-product-card,
  .specs-overlay {
    position: static;
    max-width: none;
    margin-top: 0.75rem;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  }

  .category-band,
  .detail-band,
  .reviews-section,
  .app-section,
  .support-band,
  .faq-section,
  .newsletter-section,
  .solutions-section,
  .products-section,
  .contact-section,
  .cert-strip {
    padding: 3rem 1rem !important;
  }

  .section-heading {
    margin-bottom: 1.75rem !important;
  }

  .section-heading h2,
  .solutions-section h2,
  .products-section h2 {
    font-size: clamp(1.65rem, 8vw, 2.25rem) !important;
  }

  .solutions-section [style*="grid-template-columns"],
  .products-section [style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
    gap: 1rem !important;
    max-width: 100% !important;
  }

  .solutions-section article,
  .products-section article {
    padding: 1.25rem !important;
    border-radius: 14px !important;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.07);
    min-width: 0 !important;
  }

  .products-section img,
  .industrial-storage-media img {
    max-width: 100% !important;
  }

  .industrial-storage-section,
  .device-video-section,
  .compact-resources {
    padding: 3rem 1rem;
  }

  .industrial-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
  }

  .industrial-metrics div {
    padding: 1rem;
  }

  .device-video-frame {
    padding: 0.5rem;
    border-radius: 16px;
  }

  .device-video-frame video {
    border-radius: 12px;
    max-height: 420px;
  }

  .video-caption {
    position: static;
    margin-top: 0.5rem;
    font-size: 0.92rem;
    padding: 0.8rem 0.9rem;
    border-radius: 10px;
  }

  .contact-content,
  .form-row {
    grid-template-columns: 1fr !important;
  }
}

/* ========================================
   Final Color System - Industry Application
   One consistent 2B palette across the whole page.
   ======================================== */

.b2b-eyebrow,
.eyebrow,
.product-badge,
.cert-badge strong,
.stat-label,
.app-badge,
.spec-label,
.type-line,
.spec-tags span,
.image-markers span,
.video-points span,
.insight-card span {
  background: var(--green) !important;
  color: #ffffff !important;
  border-color: var(--green) !important;
}

.primary-link,
.b2b-primary,
.add-button,
.cta-button,
.contact-form button,
.newsletter-form button {
  background: var(--green) !important;
  color: #ffffff !important;
  border-color: var(--green) !important;
  box-shadow: 0 12px 26px rgba(0, 86, 145, 0.22) !important;
}

.primary-link:hover,
.b2b-primary:hover,
.add-button:hover,
.cta-button:hover,
.contact-form button:hover,
.newsletter-form button:hover {
  background: var(--green-dark) !important;
  border-color: var(--green-dark) !important;
  color: #ffffff !important;
}

.secondary-link,
.b2b-secondary,
.quote-note,
.resource-row a,
.contact-info strong {
  background: #ffffff !important;
  color: var(--green-dark) !important;
  border-color: var(--green-dark) !important;
}

.match-meta span {
  color: var(--green-dark) !important;
}