/* ===== 益牧堂官网样式系统 ===== */

/* --- CSS Variables --- */
:root {
  --color-primary: #2d8a4e;
  --color-primary-dark: #1e6b3a;
  --color-primary-light: #e8f5ec;
  --color-secondary: #f59e0b;
  --color-bg: #ffffff;
  --color-bg-alt: #f8faf8;
  --color-bg-dark: #1a2e23;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --container-width: 1200px;
  --header-height: 72px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }

body {
  margin: 0;
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.3; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0; padding: 0; list-style: none; }

/* --- Layout --- */
.container {
  width: min(var(--container-width), 92%);
  margin: 0 auto;
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-size: 1rem;
  font-weight: 700;
}

.logo-text { color: var(--color-primary-dark); }

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.nav-link {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s, background 0.2s;
}

.nav-link:hover { color: var(--color-primary); background: var(--color-primary-light); }
.nav-link.active { color: var(--color-primary); font-weight: 600; }

.header-phone {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.95rem;
  white-space: nowrap;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  text-decoration: none;
}

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

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: 0 8px 20px rgba(45,138,78,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-block { width: 100%; }

/* --- Hero --- */
.hero {
  padding: calc(var(--header-height) + 60px) 0 80px;
  background: linear-gradient(170deg, #f0faf3 0%, #ffffff 50%, #f8fdf9 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(45,138,78,0.08), transparent 70%);
  top: -100px;
  right: -100px;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.hero-text h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1.25rem;
  color: var(--color-bg-dark);
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat strong {
  font-size: 2rem;
  color: var(--color-primary);
  line-height: 1;
}

.hero-stat span {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-top: 0.25rem;
}

.hero-visual {
  display: grid;
  gap: 1rem;
}

.hero-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.hero-card-icon { font-size: 2rem; flex-shrink: 0; }
.hero-card h3 { font-size: 1rem; margin-bottom: 0.25rem; }
.hero-card p { font-size: 0.875rem; color: var(--color-text-light); margin: 0; }

/* --- Sections --- */
.section { padding: 80px 0; }
.section-alt { background: var(--color-bg-alt); }

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-tag {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--color-text-light);
  font-size: 1.05rem;
  margin: 0;
}

.section-more { text-align: center; margin-top: 2.5rem; }

/* --- Product Grid --- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  display: block;
}

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

.product-card-img {
  height: 160px;
  display: grid;
  place-items: center;
}

.product-emoji { font-size: 4rem; }

.product-card-body {
  padding: 1.25rem;
}

.product-card-body h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.product-card-body p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

.product-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
}

/* --- Advantage Grid --- */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.advantage-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.advantage-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary-light);
  margin-bottom: 0.75rem;
  line-height: 1;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.advantage-item h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.advantage-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin: 0;
}

/* --- About Brief --- */
.about-brief-wrap {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about-brief-text .section-tag { margin-bottom: 1rem; }
.about-brief-text h2 { margin-bottom: 1.5rem; font-size: 1.75rem; }
.about-brief-text p { color: var(--color-text-light); }
.about-brief-text .btn { margin-top: 0.5rem; }

.about-brief-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.stat-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.stat-card strong {
  display: block;
  font-size: 2.25rem;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-card span {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* --- Case Grid --- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.case-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.case-quote {
  font-size: 4rem;
  color: var(--color-primary-light);
  line-height: 1;
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-family: Georgia, serif;
}

.case-text {
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.case-footer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.case-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.case-footer strong { display: block; font-size: 0.95rem; }
.case-footer span { font-size: 0.8rem; color: var(--color-text-light); }

/* --- News Grid --- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.news-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  gap: 1.25rem;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.news-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 60px;
  padding: 0.75rem;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
}

.news-day {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.news-month {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 0.25rem;
}

.news-body { flex: 1; }

.news-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.news-body h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.news-body p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: start;
}

.contact-info { display: grid; gap: 1.5rem; }

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-item h4 { font-size: 0.95rem; margin-bottom: 0.25rem; }
.contact-item p { font-size: 0.9rem; color: var(--color-text-light); margin: 0; }

.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.form-group span {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(45,138,78,0.1);
}

/* --- Footer --- */
.footer {
  background: var(--color-bg-dark);
  color: #fff;
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand p {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  margin-top: 1rem;
}

.footer-brand .logo-icon { background: rgba(255,255,255,0.15); }
.footer-brand .logo-text { color: #fff; }
.footer-contact { color: var(--color-secondary) !important; font-weight: 600; }

.footer-links h4 {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: #fff;
}

.footer-links a {
  display: block;
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  padding: 0.3rem 0;
  transition: color 0.2s;
}

.footer-links a:hover { color: #fff; }

.footer-bottom {
  padding: 1.25rem 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  margin: 0;
}

.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: #fff; }

/* --- Page Banner --- */
.page-banner {
  padding: calc(var(--header-height) + 50px) 0 50px;
  background: linear-gradient(170deg, #f0faf3 0%, #e8f5ec 100%);
  text-align: center;
}

.page-banner h1 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  margin-bottom: 0.75rem;
}

.page-banner p {
  color: var(--color-text-light);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.breadcrumb {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.breadcrumb a {
  color: var(--color-primary);
  transition: opacity 0.2s;
}

.breadcrumb a:hover { opacity: 0.7; }

/* --- Tabs --- */
.product-tabs, .news-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  justify-content: center;
}

.tab-btn {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: #fff;
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.tab-btn.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Product Detail Cards (products.html) --- */
.product-detail-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 1.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.pdc-img {
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  min-height: 140px;
}

.pdc-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.pdc-body h3 { margin-bottom: 0.5rem; }
.pdc-body p { color: var(--color-text-light); font-size: 0.95rem; }

.pdc-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.pdc-features li {
  padding: 0.25rem 0.75rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.btn-sm { padding: 0.5rem 1.25rem; font-size: 0.875rem; }

/* --- CTA Box --- */
.cta-box {
  text-align: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
}

.cta-box h2 { margin-bottom: 0.75rem; }
.cta-box p { color: rgba(255,255,255,0.85); margin-bottom: 1.5rem; }
.cta-box .btn-primary { background: #fff; color: var(--color-primary-dark); border-color: #fff; }
.cta-box .btn-primary:hover { background: #f0faf3; }
.cta-box .btn-outline { color: #fff; border-color: rgba(255,255,255,0.5); }
.cta-box .btn-outline:hover { background: rgba(255,255,255,0.15); }
.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* --- About Page --- */
.about-intro {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-intro-text h2 { margin-bottom: 1.25rem; font-size: 1.75rem; }
.about-intro-text p { color: var(--color-text-light); }

.about-intro-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.highlight-item {
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
}

.highlight-item strong {
  display: block;
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.highlight-item span { font-size: 0.9rem; color: var(--color-text-light); }

.culture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.culture-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.culture-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.culture-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.culture-card h3 { margin-bottom: 0.75rem; }
.culture-card p { color: var(--color-text-light); font-size: 0.95rem; margin: 0; }

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.team-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.team-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 auto 1rem;
}

.team-card h3 { margin-bottom: 0.25rem; }
.team-count { color: var(--color-primary); font-weight: 700; font-size: 1.25rem; margin-bottom: 0.5rem; }
.team-card p { color: var(--color-text-light); font-size: 0.9rem; margin: 0; }

.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.cert-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.cert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.cert-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.cert-card h4 { margin-bottom: 0.5rem; }
.cert-card p { color: var(--color-text-light); font-size: 0.875rem; margin: 0; }

/* --- Timeline --- */
.timeline { position: relative; padding-left: 2rem; }

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-primary-light);
  border-radius: 3px;
}

.timeline-item {
  position: relative;
  padding: 0 0 2rem 2rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-primary-light);
  margin-left: -5.5px;
}

.timeline-year {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.timeline-content h4 { margin-bottom: 0.35rem; }
.timeline-content p { color: var(--color-text-light); font-size: 0.95rem; margin: 0; }

/* --- FAQ --- */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.faq-item summary {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::after { content: "+"; font-size: 1.25rem; color: var(--color-primary); }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { padding: 0 1.5rem 1.25rem; color: var(--color-text-light); margin: 0; }

/* --- News List (news.html) --- */
.news-list-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: transform 0.3s, box-shadow 0.3s;
}

.news-list-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.news-list-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.75rem;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  align-self: start;
}

.news-list-body h3 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.news-list-body p { color: var(--color-text-light); font-size: 0.95rem; }
.news-list-meta { margin-bottom: 0.5rem; }

.news-read-more {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
}

.news-read-more:hover { text-decoration: underline; }

/* --- Pagination --- */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
}

.page-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: all 0.2s;
}

.page-item:hover { border-color: var(--color-primary); color: var(--color-primary); }
.page-item.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* --- Product Detail Page --- */
.detail-intro { margin-bottom: 3rem; }
.detail-intro h2 { margin-bottom: 1rem; }
.detail-intro p { color: var(--color-text-light); font-size: 1.05rem; max-width: 800px; }

.detail-product-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.dpi-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.dpi-header h3 { font-size: 1.25rem; }

.dpi-badge {
  padding: 0.3rem 0.8rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.dpi-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
}

.dpi-desc p { color: var(--color-text-light); }
.dpi-desc h4 { margin: 1rem 0 0.5rem; font-size: 0.95rem; }
.dpi-desc ul { padding-left: 1.25rem; list-style: disc; }
.dpi-desc li { color: var(--color-text-light); font-size: 0.9rem; margin-bottom: 0.35rem; }

.dpi-specs h4 { margin-bottom: 0.75rem; font-size: 0.95rem; }

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.spec-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--color-border-light);
}

.spec-table tr td:first-child { font-weight: 600; color: var(--color-text); }
.spec-table tr td:last-child { color: var(--color-primary); text-align: right; }

.dpi-pack {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

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

.tip-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: transform 0.3s, box-shadow 0.3s;
}

.tip-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.tip-card h4 { margin-bottom: 0.5rem; color: var(--color-primary); }
.tip-card p { color: var(--color-text-light); font-size: 0.9rem; margin: 0; }

/* --- Carousel --- */
.carousel {
  position: relative;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1.5rem;
  background: #f1f5f1;
}

.carousel-track {
  display: flex;
  transition: transform 0.4s ease;
  will-change: transform;
}

.carousel-track img {
  width: 100%;
  flex-shrink: 0;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

.carousel-prev,
.carousel-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  color: var(--color-text);
  font-size: 1.1rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-sm);
  transition: background 0.2s, transform 0.2s;
  z-index: 2;
}

.carousel-prev:hover,
.carousel-next:hover {
  background: #fff;
  transform: translateY(-50%) scale(1.1);
}

.carousel-prev { left: 12px; }
.carousel-next { right: 12px; }

.carousel-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  border: 2px solid rgba(255,255,255,0.8);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.carousel-dot.active {
  background: var(--color-primary);
  border-color: #fff;
  transform: scale(1.2);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .culture-grid { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: repeat(2, 1fr); }
  .dpi-content { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --header-height: 60px; }

  .header-phone { display: none; }
  .menu-toggle { display: flex; }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s, opacity 0.3s;
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .hero-content { grid-template-columns: 1fr; gap: 2rem; }
  .hero-text h1 { font-size: 1.75rem; }
  .hero-stats { gap: 1.5rem; }
  .hero-stat strong { font-size: 1.5rem; }

  .product-grid { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: 1fr; }
  .about-brief-wrap { grid-template-columns: 1fr; }
  .about-intro { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .team-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
  .product-detail-card { grid-template-columns: 1fr; }
  .news-list-item { grid-template-columns: 1fr; }
  .news-list-date { flex-direction: row; gap: 0.5rem; align-self: auto; }

  .section { padding: 50px 0; }
}

@media (max-width: 480px) {
  .hero-stats { flex-direction: column; gap: 1rem; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .fade-up { opacity: 1; transform: none; }
}