/* ===== CSS Variables ===== */
:root {
  --primary-50: #fef2f2;
  --primary-100: #fde8e8;
  --primary-200: #fcd4d5;
  --primary-300: #f8a8aa;
  --primary-400: #ef6a6e;
  --primary-500: #d71921;
  --primary-600: #b9151c;
  --primary-700: #9a1118;
  --primary-800: #7c0d13;
  --primary-900: #5d0a0f;

  --gold-50: #fef2f2;
  --gold-100: #fde8e8;
  --gold-200: #fcd4d5;
  --gold-300: #f8a8aa;
  --gold-400: #ef6a6e;
  --gold-500: #d71921;
  --gold-600: #b9151c;
  --gold-700: #9a1118;
  --gold-800: #7c0d13;
  --gold-900: #5d0a0f;

  --ink-50: #F5F5F7;
  --ink-100: #E8E8EC;
  --ink-200: #C8C8D0;
  --ink-300: #9898A6;
  --ink-400: #68687A;
  --ink-500: #484860;
  --ink-600: #363650;
  --ink-700: #2A2A3E;
  --ink-800: #1F1520;
  --ink-900: #150E14;

  --cream: #FAF8F5;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--cream);
  color: var(--ink-800);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
h1, h2, h3, h4, h5, h6 {
  font-family: 'Noto Serif SC', 'Source Han Serif SC', 'STSong', 'SimSun', serif;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }

/* ===== Utility Classes ===== */
.section-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}
@media (min-width: 640px) { .section-container { padding: 0 1.5rem; } }
@media (min-width: 1024px) { .section-container { padding: 0 2rem; } }

.section-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--ink-800);
  margin-bottom: 1rem;
  font-family: 'Noto Serif SC', serif;
}
@media (min-width: 640px) { .section-title { font-size: 2.25rem; } }

.section-subtitle {
  font-size: 1.125rem;
  color: var(--ink-400);
  margin-bottom: 3rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  /* background: var(--primary-500); */
  border: 1px solid #fff !important;
  color: #fff;
  font-weight: 500;
  border-radius: 2px;
  border: none;
  cursor: pointer;
  transition: background 0.3s;
}
.btn-primary:hover { background: var(--primary-600); }

.card {
  background: #fff;
  border-radius: 2px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  transition: box-shadow 0.3s;
  overflow: hidden;
}
.card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.12); }

.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--primary-50);
  color: var(--primary-500);
  border-radius: 9999px;
}
.tag-gold {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--primary-50);
  color: var(--primary-500);
  border-radius: 9999px;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: #fff;
  transition: all 0.3s;
}
.site-header.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}
.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
}

/* ==================== Banner关键词滚屏 ==================== */
.banner-keywords {
  position: relative;
  height: 32px;
  margin-bottom: 32px;
  overflow: hidden;
}

.keyword-item {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  font-size: 17px;
  /* color: var(--accent); */
  color: #fff;
  font-weight: 600;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease;
  letter-spacing: 1px;
}

.keyword-item.active {
  opacity: 1;
  transform: translateY(0);
}

.keyword-item.exit {
  opacity: 0;
  transform: translateY(-20px);
}
/* Header color states */
.logo-text-title { color: var(--primary-500); }
.logo-text-sub { color: var(--primary-600); }

.desktop-nav {
  display: none;
  align-items: center;
  gap: 0.25rem;
}
@media (min-width: 1024px) { .desktop-nav { display: flex; } }

.nav-link {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
  position: relative;
}
.nav-link { color: var(--ink-300); }
.nav-link:hover { color: var(--primary-800); }
.nav-link.active { color: var(--primary-500) !important; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary-500);
  border-radius: 9999px;
  transition: width 0.2s;
}
.nav-link:hover::after, .nav-link.active::after { width: 1.25rem; }

.mobile-toggle {
  display: block;
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
}
@media (min-width: 1024px) { .mobile-toggle { display: none; } }
.mobile-toggle { color: var(--primary-500); }

.mobile-menu {
  display: none;
  background: #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.mobile-menu.open { display: block; }
.mobile-menu .nav-link {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--ink-600);
  border-radius: 2px;
}
.mobile-menu .nav-link::after { display: none; }
.mobile-menu .nav-link:hover { background: var(--ink-50); }
.mobile-menu .nav-link.active { color: var(--primary-500) !important; background: var(--primary-50); }

/* ===== Hero ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  /* background: #d71921; */
  background:
    /* radial-gradient(ellipse 120% 80% at 50% 40%, rgba(215,25,33,0.35) 0%, transparent 60%),
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(215,25,33,0.2) 0%, transparent 50%), */
    linear-gradient(160deg, var(--primary-600) 0%, var(--primary-500) 40%, var(--primary-700) 100%);
}
.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.2;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100'%3E%3Ccircle cx='50' cy='50' r='40' stroke='%23d71921' stroke-width='0.5' fill='none' opacity='0.3'/%3E%3Ccircle cx='50' cy='50' r='25' stroke='%23d71921' stroke-width='0.3' fill='none' opacity='0.2'/%3E%3C/svg%3E");
}
.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  color: #fff;
  padding: 0 1rem;
  max-width: 56rem;
  margin: 0 auto;
}
.hero-badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  border: 1px solid #fff;
  color: #fff;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  border-radius: 2px;
  margin-bottom: 1.5rem;
}
.hero-title {
  font-family: 'Noto Serif SC', serif;
  font-weight: 700;
  font-size: 2.25rem;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}
@media (min-width: 640px) { .hero-title { font-size: 3rem; } }
@media (min-width: 768px) { .hero-title { font-size: 3.75rem; } }
@media (min-width: 1024px) { .hero-title { font-size: 4.5rem; } }
.hero-title .highlight { color: var(--gold-400); }
.hero-desc {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 2.5rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}
@media (min-width: 640px) { .hero-desc { font-size: 1.25rem; } }
.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}
@media (min-width: 640px) { .hero-actions { flex-direction: row; } }
.hero-actions .btn-primary { font-size: 1.125rem; padding: 1rem 2.5rem; }
.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}
.hero-scroll svg { width: 1.5rem; height: 1.5rem; color: rgba(255,255,255,0.5); }
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-0.5rem); }
}

/* ===== Stats ===== */
.stats-section {
  position: relative;
  margin-top: -5rem;
  z-index: 20;
}
.stats-card {
  background: #fff;
  border-radius: 2px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  padding: 2rem;
}
@media (min-width: 640px) { .stats-card { padding: 3rem; } }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  text-align: center;
}
@media (min-width: 768px) { .stats-grid { grid-template-columns: repeat(4, 1fr); } }
.stat-item { position: relative; }
.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 10%;
  height: 80%;
  width: 1px;
  background: var(--ink-100);
}
@media (max-width: 767px) { .stat-item::after { display: none; } }
.stat-value {
  font-family: 'Noto Serif SC', serif;
  font-weight: 700;
  font-size: 1.875rem;
  color: var(--primary-500);
  margin-bottom: 0.25rem;
}
@media (min-width: 640px) { .stat-value { font-size: 2.25rem; } }
.stat-label {
  font-size: 0.875rem;
  color: var(--ink-400);
}

/* ===== Business ===== */
.business-section {
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}
@media (min-width: 1024px) { .business-section { padding: 8rem 0; } }
.business-section::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(215,25,33,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}
.section-label {
  display: inline-block;
  color: var(--primary-500);
  font-size: 0.8125rem;
  letter-spacing: 0.15em;
  font-weight: 600;
  padding: 0.35rem 1.25rem;
  background: linear-gradient(135deg, var(--primary-50), rgba(215,25,33,0.08));
  border: 1px solid rgba(215,25,33,0.12);
  border-radius: 9999px;
  margin-bottom: 1.25rem;
}

.business-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px) { .business-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; } }
@media (min-width: 1024px) { .business-grid { grid-template-columns: repeat(3, 1fr); gap: 1.75rem; max-width: 960px; margin: 0 auto; } }

.business-item {
  position: relative;
  background: #fff;
  border-radius: 16px;
  border: 1px solid rgba(0,0,0,0.04);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  overflow: hidden;
}
.business-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-400), var(--primary-600));
  opacity: 0;
  transition: opacity 0.4s ease;
}
.business-item::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  background: radial-gradient(circle at 50% 0%, rgba(215,25,33,0.06), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.business-item:hover {
  transform: translateY(-8px);
  box-shadow:
    0 20px 40px -12px rgba(215,25,33,0.15),
    0 8px 24px -8px rgba(0,0,0,0.08);
  border-color: rgba(215,25,33,0.1);
}
.business-item:hover::before { opacity: 1; }
.business-item:hover::after { opacity: 1; }

.business-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 1.5rem;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  z-index: 1;
  color: var(--primary-500);
}
.business-icon svg {
  width: 28px;
  height: 28px;
}
.business-icon.bg-primary-50 {
  background: linear-gradient(145deg, #fef2f2, #fde8e8);
  box-shadow:
    inset 0 1px 2px rgba(255,255,255,0.9),
    0 4px 12px rgba(215,25,33,0.08);
}
.business-icon.bg-gold-50 {
  background: linear-gradient(145deg, #fef2f2, #fcd4d5);
  box-shadow:
    inset 0 1px 2px rgba(255,255,255,0.9),
    0 4px 12px rgba(215,25,33,0.08);
}
.business-item:hover .business-icon {
  transform: scale(1.08) rotate(-3deg);
  box-shadow:
    inset 0 1px 2px rgba(255,255,255,0.9),
    0 8px 20px rgba(215,25,33,0.18);
}

.business-item h3 {
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: 0.85rem;
  color: var(--ink-800);
  transition: color 0.35s ease;
  position: relative;
  z-index: 1;
}
.business-item:hover h3 { color: var(--primary-600); }

.business-item p {
  font-size: 0.8125rem;
  color: var(--ink-400);
  line-height: 1.75;
  position: relative;
  z-index: 1;
}

/* ===== Cases ===== */
.cases-section {
  padding: 5rem 0;
  background: #fff;
}
@media (min-width: 1024px) { .cases-section { padding: 7rem 0; } }
.cases-header {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 4rem;
}
@media (min-width: 640px) {
  .cases-header {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}
.cases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) { .cases-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .cases-grid { grid-template-columns: repeat(3, 1fr); } }
.case-card {
  background: #fff;
  border-radius: 2px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  overflow: hidden;
  transition: box-shadow 0.3s;
}
.case-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.12); }
/* ===== Cases Carousel ===== */
.case-carousel {
  position: relative;
  /* aspect-ratio: 4/3; */
  overflow: hidden;
}
.case-carousel-track {
  display: flex;
  height: 100%;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.case-carousel-track img {
  flex-shrink: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,0.92);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 3;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  padding: 0;
}
.carousel-btn svg { width: 16px; height: 16px; color: var(--ink-600); transition: color 0.3s; }
.carousel-btn-prev { left: 10px; }
.carousel-btn-next { right: 10px; }
.case-card:hover .carousel-btn { opacity: 1; }
.carousel-btn:hover {
  background: var(--primary-500);
  box-shadow: 0 4px 12px rgba(215,25,33,0.3);
}
.carousel-btn:hover svg { color: #fff; }
.case-info { padding: 1.5rem; }
.case-tags { display: flex; gap: 0.5rem; margin-top: 0.75rem; }
.case-info h3 {
  font-family: 'Noto Serif SC', serif;
  font-weight: 700;
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  transition: color 0.3s;
}
.case-card:hover .case-info h3 { color: var(--primary-500); }
.case-info p { font-size: 0.875rem; color: var(--ink-400); }

/* ===== IP Library ===== */
.ip-section {
  padding: 5rem 0;
  background: var(--cream);
  position: relative;
  overflow: hidden;
}
@media (min-width: 1024px) { .ip-section { padding: 7rem 0; } }
.ip-section::before {
  content: '';
  position: absolute;
  bottom: -15%;
  left: -10%;
  width: 450px;
  height: 450px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(215,25,33,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.ip-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  position: relative;
  z-index: 1;
}
@media (min-width: 640px) { .ip-grid { grid-template-columns: repeat(4, 1fr); gap: 1rem; } }
@media (min-width: 1024px) { .ip-grid { grid-template-columns: repeat(6, 1fr); gap: 1rem; } }

.ip-card {
  /* overflow: hidden; */
  background: #fff;
}
.ip-img-wrap {
  aspect-ratio: 1/1;
  overflow: hidden;
}
.ip-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ip-info { padding: 0.5rem 0.25rem 0.625rem; text-align: center; }
.ip-info h3 {
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--ink-800);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== Insights ===== */
.insights-section {
  padding: 5rem 0;
  background: var(--ink-800);
  color: #fff;
  position: relative;
  overflow: hidden;
}
@media (min-width: 1024px) { .insights-section { padding: 7rem 0; } }
.insights-decor1 {
  position: absolute;
  top: 0;
  right: 0;
  width: 24rem;
  height: 24rem;
  background: rgba(215,25,33,0.1);
  border-radius: 50%;
  transform: translate(50%, -50%);
}
.insights-decor2 {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 18rem;
  height: 18rem;
  background: rgba(215,25,33,0.1);
  border-radius: 50%;
  transform: translate(-50%, 50%);
}
.insights-content {
  position: relative;
  z-index: 10;
  max-width: 48rem;
  margin: 0 auto;
  text-align: center;
}
.insights-label {
  color: var(--primary-500);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  font-weight: 500;
}
.insights-title {
  font-family: 'Noto Serif SC', serif;
  font-weight: 700;
  font-size: 1.875rem;
  margin: 0.5rem 0 2rem;
  line-height: 1.3;
}
@media (min-width: 640px) { .insights-title { font-size: 2.25rem; } }
.insights-text-wrap {
  text-align: left;
  max-width: 42rem;
  margin: 0 auto;
}
.insights-text-wrap p {
  color: var(--ink-300);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

/* ===== Partners ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header.light {
  color: #fff;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-header.light .section-tag {
  color: var(--accent);
}

.section-header h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-light);
}

.section-header.light p {
  color: rgba(255,255,255,0.6);
}

.section-more {
  text-align: center;
  margin-top: 40px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.contact-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px 48px;
}
@media (max-width: 639px) {
  .contact-info { grid-template-columns: 1fr; gap: 16px; }
  .contact-grid { gap: 32px; }
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  background: rgba(255,255,255,0.06);
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.1);
  transition: all 0.3s ease;
}
@media (max-width: 639px) {
  .contact-item { padding: 16px; gap: 12px; }
}

.contact-item:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-2px);
}

.contact-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  color: var(--primary-500);
}
.contact-icon svg { width: 100%; height: 100%; }
@media (max-width: 639px) {
  .contact-icon { width: 36px; height: 36px; }
}

.contact-item h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
  color: #fff;
}
@media (max-width: 639px) {
  .contact-item h4 { font-size: 14px; }
}

.contact-item p {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  word-break: break-all;
}
@media (max-width: 639px) {
  .contact-item p { font-size: 13px; }
}

.contact-form {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(10px);
}

.contact-form h3 {
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.05);
  color: #fff;
  font-size: 14px;
  margin-bottom: 16px;
  outline: none;
  transition: var(--transition);
  font-family: var(--font-family);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255,255,255,0.4);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
  background: rgba(255,255,255,0.08);
}

.contact-form select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='rgba(255,255,255,0.5)' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

.contact-form select option {
  background: #171b45;
  color: #fff;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row input {
  margin-bottom: 16px;
}

.contact-form textarea {
  resize: vertical;
  min-height: 100px;
}

.partners-section {
  padding: 5rem 0;
}
@media (min-width: 1024px) { .partners-section { padding: 7rem 0; } }
.partners-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
@media (min-width: 640px) { .partners-grid { grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
}
@media (min-width: 768px) { .partners-grid { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 1024px) { .partners-grid { grid-template-columns: repeat(6, 1fr); } }
.partner-item {
  background: #fff;
  border-radius: 2px;
  padding: 1.25rem 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 5rem;
  border: 1px solid var(--ink-50);
  transition: box-shadow 0.3s;
}
.partner-item:hover { box-shadow: 0 4px 8px rgba(0,0,0,0.08); }
.partner-item span {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-300);
  text-align: center;
}

/* ===== Footer ===== */
.site-footer {
  background: #fff;
  color: #000;
}
.footer-main {
  padding: 4rem 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
@media (min-width: 768px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .footer-grid { grid-template-columns: repeat(4, 1fr); } }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.footer-logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
}
.footer-desc {
  font-size: 0.875rem;
  color: var(--ink-300);
  line-height: 1.7;
}
.footer-heading {
  font-family: 'Noto Serif SC', serif;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 1.5rem;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.75rem; }
.footer-links a {
  font-size: 0.875rem;
  color: var(--ink-300);
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--gold-400); }
.footer-links span {
  font-size: 0.875rem;
  color: var(--ink-300);
}
.footer-contact { list-style: none; }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 0.875rem;
  color: var(--ink-300);
}
.footer-contact svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--gold-400);
  flex-shrink: 0;
}
.footer-bottom {
  /* border-top: 1px solid var(--ink-700); */
  padding: 1.5rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
@media (min-width: 640px) {
  .footer-bottom { flex-direction: row; justify-content: space-between; }
}
.footer-copyright {
  font-size: 0.75rem;
  color: var(--ink-400);
}

/* ===== Back to Top ===== */
.back-top {
  position: fixed;
  right: 1.5rem;
  bottom: 2rem;
  z-index: 50;
  width: 3rem;
  height: 3rem;
  background: var(--primary-500);
  color: #fff;
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  opacity: 0;
  visibility: hidden;
}
.back-top.visible { opacity: 1; visibility: visible; }
.back-top:hover {
  background: var(--primary-600);
  transform: translateY(-4px);
}
.back-top svg { width: 1.25rem; height: 1.25rem; }

/* ===== Scroll Animation ===== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}