:root {
  --haiwai-bg: #f8fafc;
  --haiwai-surface: rgba(255, 255, 255, 0.6);
  --haiwai-surface-hover: rgba(255, 255, 255, 0.9);
  --haiwai-border: rgba(148, 163, 184, 0.2);
  --haiwai-border-strong: rgba(56, 189, 248, 0.4);
  --haiwai-text: #334155;
  --haiwai-text-soft: #64748b;
  --haiwai-text-muted: #94a3b8;
  --haiwai-heading: #0f172a;
  --haiwai-primary: #0ea5e9;
  --haiwai-primary-soft: rgba(14, 165, 233, 0.1);
  --haiwai-secondary: #8b5cf6;
  --haiwai-shadow: 0 10px 40px -10px rgba(15, 23, 42, 0.06);
  --haiwai-shadow-hover: 0 20px 40px -15px rgba(15, 23, 42, 0.1);
  --haiwai-radius-lg: 24px;
  --haiwai-radius-md: 20px;
}

html {
  scroll-behavior: smooth;
}

body.haiwai-body {
  margin: 0;
  color: var(--haiwai-text);
  background: var(--haiwai-bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", sans-serif;
  overflow-x: hidden;
}

/* 明亮科技风背景 - 蓝紫色交互光晕 */
@keyframes flowBg {
  0% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(2%, 2%) scale(1.05); }
  66% { transform: translate(-2%, 1%) scale(0.95); }
  100% { transform: translate(0, 0) scale(1); }
}

@keyframes flowGrid {
  0% { background-position: 0 0; }
  100% { background-position: 40px 40px; }
}

body.haiwai-body::before {
  content: "";
  position: fixed;
  inset: -10%;
  z-index: -2;
  background: 
    radial-gradient(circle at 20% 30%, rgba(14, 165, 233, 0.08), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.08), transparent 50%);
  pointer-events: none;
  animation: flowBg 20s ease-in-out infinite alternate;
}

body.haiwai-body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: 
    linear-gradient(rgba(148, 163, 184, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.08) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(180deg, rgba(255, 255, 255, 0.8), transparent);
  pointer-events: none;
  animation: flowGrid 20s linear infinite;
}

*, *::before, *::after {
  box-sizing: border-box;
}

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

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

.haiwai-shell {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
}

/* 高透毛玻璃基类 */
.glass-panel {
  position: relative;
  background: var(--haiwai-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--haiwai-border);
  box-shadow: var(--haiwai-shadow);
  border-radius: var(--haiwai-radius-lg);
  transition: all 0.3s ease;
  overflow: hidden;
}

/* 探照灯特效 */
.glass-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(600px circle at var(--mouse-x, 0) var(--mouse-y, 0), rgba(14, 165, 233, 0.08), transparent 40%);
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.glass-panel:hover::before {
  opacity: 1;
}

.glass-panel > * {
  position: relative;
  z-index: 1;
}

.glass-panel:hover {
  background: var(--haiwai-surface-hover);
  box-shadow: var(--haiwai-shadow-hover);
  border-color: var(--haiwai-border-strong);
  transform: translateY(-4px);
}

/* Typography */
h1, h2, h3, h4 {
  color: var(--haiwai-heading);
  margin: 0 0 16px;
  line-height: 1.2;
}

p {
  margin: 0 0 16px;
  line-height: 1.6;
}

.haiwai-eyebrow {
  display: inline-block;
  color: var(--haiwai-primary);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--haiwai-primary-soft);
}

/* Navigation */
.haiwai-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--haiwai-border);
  transition: all 0.3s ease;
}

.haiwai-header.is-scrolled {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.haiwai-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

.haiwai-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.haiwai-brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  font-weight: 800;
  font-size: 18px;
  color: #fff;
  background: linear-gradient(135deg, var(--haiwai-primary), var(--haiwai-secondary));
  box-shadow: 0 8px 16px var(--haiwai-primary-soft);
}

.haiwai-brand-copy strong {
  display: block;
  font-size: 16px;
  color: var(--haiwai-heading);
}

.haiwai-brand-copy small {
  font-size: 12px;
  color: var(--haiwai-text-soft);
}

.haiwai-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.haiwai-nav a {
  padding: 8px 16px;
  border-radius: 999px;
  color: var(--haiwai-text);
  font-weight: 500;
  transition: all 0.2s ease;
}

.haiwai-nav a:hover, .haiwai-nav a.is-active {
  color: var(--haiwai-primary);
  background: var(--haiwai-primary-soft);
}

.haiwai-nav-cta {
  background: var(--haiwai-heading) !important;
  color: #fff !important;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}
.haiwai-nav-cta:hover {
  background: var(--haiwai-primary) !important;
}

.haiwai-lang-switch {
  position: relative;
  margin-left: 12px;
}

.haiwai-lang-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 36px;
  padding: 0 16px;
  border: 1px solid var(--haiwai-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--haiwai-heading);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.haiwai-lang-button:hover,
.haiwai-lang-switch.is-open .haiwai-lang-button {
  border-color: var(--haiwai-primary);
  color: var(--haiwai-primary);
  box-shadow: 0 8px 24px rgba(14, 165, 233, 0.12);
}

.haiwai-lang-button strong {
  font-size: 12px;
  line-height: 1;
}

.haiwai-lang-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 160px;
  padding: 8px;
  border: 1px solid var(--haiwai-border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--haiwai-shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: all 0.2s ease;
}

.haiwai-lang-switch.is-open .haiwai-lang-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.haiwai-lang-menu a {
  display: block;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
}

.haiwai-lang-menu a:hover,
.haiwai-lang-menu a.is-active {
  color: var(--haiwai-primary);
  background: var(--haiwai-primary-soft);
}

.haiwai-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.haiwai-menu-toggle span:not(.haiwai-menu-text) {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--haiwai-heading);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.haiwai-menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.haiwai-menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.haiwai-menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Layout Grids (Bento Box) */
.haiwai-section {
  padding: 80px 0;
}

.haiwai-section-heading {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.haiwai-section-heading h2 {
  font-size: 36px;
}

.haiwai-section-heading p {
  font-size: 18px;
  color: var(--haiwai-text-soft);
}

.bento-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(12, 1fr);
}

.bento-item {
  padding: 32px;
  display: flex;
  flex-direction: column;
}

.col-span-12 { grid-column: span 12; }
.col-span-8 { grid-column: span 8; }
.col-span-6 { grid-column: span 6; }
.col-span-4 { grid-column: span 4; }
.col-span-3 { grid-column: span 3; }

/* SEA Cases Specific Styles (Now Global Dashboard) */
.sea-cases-container {
  padding: 40px !important;
}

.region-tabs {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--haiwai-border);
  padding-bottom: 24px;
}

.region-tab-btn {
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--haiwai-border);
  padding: 14px 32px;
  border-radius: 16px;
  color: var(--haiwai-text-soft);
  font-weight: 700;
  font-size: 18px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.region-tab-btn:hover {
  border-color: var(--haiwai-primary);
  color: var(--haiwai-primary);
  transform: translateY(-2px);
}

.region-tab-btn.is-active {
  background: var(--haiwai-surface);
  color: var(--haiwai-primary);
  border-color: var(--haiwai-primary);
  box-shadow: 0 8px 24px rgba(14, 165, 233, 0.12);
}

.region-content {
  display: none;
  animation: tabFadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.region-content.is-active {
  display: block;
}

.sea-tabs {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 12px;
  margin-bottom: 32px;
  scrollbar-width: none;
}
.sea-tabs::-webkit-scrollbar {
  display: none;
}

.sea-tab-btn {
  background: var(--haiwai-surface);
  border: 1px solid var(--haiwai-border);
  padding: 12px 28px;
  border-radius: 999px;
  color: var(--haiwai-text-soft);
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.sea-tab-btn:hover {
  border-color: var(--haiwai-primary);
  color: var(--haiwai-primary);
}

.sea-tab-btn.is-active {
  background: linear-gradient(135deg, var(--haiwai-primary), var(--haiwai-secondary));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 8px 20px var(--haiwai-primary-soft);
}

.sea-tab-content {
  display: none;
  animation: tabFadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.sea-tab-content.is-active {
  display: block;
}

@keyframes tabFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.sea-case-header h3 {
  font-size: 24px;
  line-height: 1.3;
}

.sea-case-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.sea-case-item {
  background: rgba(255, 255, 255, 0.4);
  padding: 24px;
  border-radius: 20px;
  border: 1px solid var(--haiwai-border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.sea-case-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

.sea-case-item h4 {
  font-size: 15px;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sea-case-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
}

/* Buttons */
.haiwai-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-weight: 600;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.haiwai-button.is-primary {
  background: linear-gradient(135deg, var(--haiwai-primary), var(--haiwai-secondary));
  color: #fff;
  box-shadow: 0 8px 20px var(--haiwai-primary-soft);
}

.haiwai-button.is-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(14, 165, 233, 0.2);
}

.haiwai-button.is-secondary {
  background: #fff;
  color: var(--haiwai-heading);
  border: 1px solid var(--haiwai-border);
}

.haiwai-button.is-secondary:hover {
  border-color: var(--haiwai-primary);
  color: var(--haiwai-primary);
}

/* Hero Section */
.haiwai-hero {
  padding: 120px 0 80px;
  text-align: center;
  position: relative;
}

.haiwai-hero h1 {
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--haiwai-heading), var(--haiwai-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.haiwai-hero .haiwai-lead {
  font-size: 20px;
  color: var(--haiwai-text-soft);
  max-width: 720px;
  margin: 0 auto 32px;
}

.haiwai-hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.haiwai-badge-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin: 32px 0;
}

.haiwai-pill {
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.8);
  border: 1px solid var(--haiwai-border);
  font-size: 14px;
  font-weight: 500;
  color: var(--haiwai-text);
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

/* List styles */
.bento-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.bento-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 12px;
  color: var(--haiwai-text);
}

.bento-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--haiwai-primary);
  box-shadow: 0 0 0 4px var(--haiwai-primary-soft);
}

/* Footer */
.haiwai-footer {
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.6), #ffffff);
  padding: 60px 0 24px;
  border-top: 1px solid var(--haiwai-border);
  margin-top: 80px;
}

.haiwai-footer-grid {
  display: grid;
  grid-template-columns: 5fr 4fr 3fr;
  gap: 48px;
  margin-bottom: 48px;
}

.haiwai-footer-brand h2 {
  font-size: 22px;
  margin-bottom: 16px;
  color: var(--haiwai-heading);
}

.haiwai-footer-desc {
  max-width: 380px;
  color: var(--haiwai-text-soft);
  font-size: 15px;
  line-height: 1.8;
}

.haiwai-footer h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--haiwai-heading);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.haiwai-footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.haiwai-footer-list.is-multi-col {
  columns: 2;
  column-gap: 32px;
}

.haiwai-footer-list li {
  margin-bottom: 14px;
  break-inside: avoid;
}

.haiwai-footer-list a {
  color: var(--haiwai-text-soft);
  font-size: 15px;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
}

.haiwai-footer-list a:hover {
  color: var(--haiwai-primary);
  transform: translateX(4px);
}

.haiwai-footer-bottom {
  border-top: 1px solid var(--haiwai-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--haiwai-text-muted);
  font-size: 14px;
}

.haiwai-footer-links {
  border-top: 1px solid var(--haiwai-border);
  padding-top: 24px;
  margin-bottom: 24px;
}

.haiwai-footer-links-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.haiwai-footer-link-cloud {
  display: flex;
  flex-wrap: nowrap;
  gap: 0 18px;
  overflow: hidden;
  white-space: nowrap;
}

.haiwai-footer-link-cloud a {
  display: inline-block;
  color: var(--haiwai-text-soft);
  font-size: 13px;
  line-height: 1.8;
  transition: all 0.25s ease;
}

.haiwai-footer-link-cloud a:hover {
  color: var(--haiwai-primary);
}

.haiwai-footer-links.is-expanded .haiwai-footer-link-cloud {
  flex-wrap: wrap;
  white-space: normal;
  gap: 8px 18px;
}

.haiwai-footer-links-toggle {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--haiwai-primary);
  font-size: 13px;
  line-height: 1.6;
  cursor: pointer;
}

.haiwai-footer-links-toggle:hover {
  color: var(--haiwai-secondary);
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Responsive */
@media (max-width: 992px) {
  .col-span-8, .col-span-6, .col-span-4, .col-span-3 {
    grid-column: span 12;
  }
  .haiwai-footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .haiwai-footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .haiwai-footer-links-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 768px) {
  .haiwai-menu-toggle {
    display: flex;
  }
  .sea-case-grid {
    grid-template-columns: 1fr;
  }
  .haiwai-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #fff;
    padding: 20px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    flex-direction: column;
    align-items: flex-start;
  }
  .haiwai-lang-switch {
    width: 100%;
    margin-left: 0;
  }
  .haiwai-lang-button {
    width: 100%;
    justify-content: space-between;
  }
  .haiwai-lang-menu {
    position: static;
    width: 100%;
    min-width: 0;
    margin-top: 8px;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    display: none;
    box-shadow: none;
    background: rgba(248, 250, 252, 0.9);
  }
  .haiwai-lang-switch.is-open .haiwai-lang-menu {
    display: block;
  }
  .haiwai-nav.is-open {
    display: flex;
  }
  .haiwai-hero {
    padding: 80px 0 40px;
  }
  .haiwai-section {
    padding: 40px 0;
  }
  .haiwai-hero-actions {
    flex-direction: column;
  }
  .haiwai-footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}