:root {
  --color-deep-blue: #0a1628;
  --color-deep-blue-rgb: 10, 22, 40;
  --color-galaxy-purple: #6a4e9c;
  --color-galaxy-purple-rgb: 106, 78, 156;
  --color-star-gold: #f5d76e;
  --color-star-gold-rgb: 245, 215, 110;
  --color-cold-white: #e0e5ec;
  --color-bright-white: #ffffff;
  --color-card-bg: #1b2a3f;
  --color-border: #2a3d5c;
  --color-deep-black: #050b14;
  --color-text-muted: #9aa8b9;
  --font-heading: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --font-body: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --font-caption: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --heading-size: clamp(2rem, 5vw, 4rem);
  --body-size: 1rem;
  --caption-size: 0.875rem;
  --nav-height: 64px;
  --content-max-width: 1200px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 32px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-float: 0 8px 40px rgba(0, 0, 0, 0.4);
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-blur: blur(16px);
}
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}
body {
  font-family: var(--font-body);
  font-size: var(--body-size);
  line-height: 1.6;
  color: var(--color-cold-white);
  background: var(--color-deep-blue);
  background-image: radial-gradient(ellipse at 20% 50%, rgba(106, 78, 156, 0.08) 0%, transparent 60%), radial-gradient(ellipse at 80% 20%, rgba(10, 22, 40, 1) 0%, transparent 50%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a {
  color: var(--color-galaxy-purple);
  text-decoration: none;
  transition: color var(--transition-smooth);
}
a:hover {
  color: var(--color-star-gold);
}
a:focus-visible {
  outline: 2px solid var(--color-star-gold);
  outline-offset: 4px;
  border-radius: 4px;
}
img, svg {
  display: block;
  max-width: 100%;
}
ul, ol {
  list-style: none;
}
button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}
input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  transition: border-color var(--transition-smooth);
}
input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: none;
  border-color: var(--color-galaxy-purple);
  box-shadow: 0 0 0 3px rgba(106, 78, 156, 0.25);
}
::selection {
  background: rgba(106, 78, 156, 0.4);
  color: var(--color-bright-white);
}
.skip-link {
  position: absolute;
  top: -9999px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  background: var(--color-galaxy-purple);
  color: var(--color-bright-white);
  padding: 0.75rem 1.5rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 0;
  outline: none;
  box-shadow: 0 4px 16px rgba(106, 78, 156, 0.5);
}
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-galaxy-purple), var(--color-star-gold));
  z-index: 9999;
  pointer-events: none;
  transition: width 0.1s linear;
  will-change: width;
}
@media (prefers-reduced-motion: reduce) {
  .scroll-progress {
    display: none;
  }
}
.site-header {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 24px);
  max-width: var(--content-max-width);
  z-index: 9000;
  background: rgba(var(--color-deep-blue-rgb), 0.78);
  backdrop-filter: var(--nav-blur);
  -webkit-backdrop-filter: var(--nav-blur);
  border: 1px solid rgba(var(--color-galaxy-purple-rgb), 0.15);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-float);
  transition: background var(--transition-smooth), border-color var(--transition-smooth);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 1.25rem;
}
.site-header__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}
.site-header__brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}
.site-header__brand-icon svg {
  width: 100%;
  height: 100%;
}
.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-bright-white);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: rgba(var(--color-galaxy-purple-rgb), 0.12);
  border-radius: 50%;
  transition: background var(--transition-smooth);
  position: relative;
  z-index: 9100;
}
.nav-toggle:hover {
  background: rgba(var(--color-galaxy-purple-rgb), 0.25);
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--color-star-gold);
  outline-offset: 4px;
}
.nav-toggle__line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-cold-white);
  border-radius: 2px;
  transition: transform var(--transition-smooth), opacity var(--transition-smooth);
  margin: 3px 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}
.site-nav {
  display: flex;
  align-items: center;
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}
.site-nav__item {
  position: relative;
}
.site-nav__link {
  display: block;
  padding: 0.5rem 1.1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-cold-white);
  border-radius: 100px;
  transition: background var(--transition-smooth), color var(--transition-smooth), box-shadow var(--transition-smooth);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.site-nav__link:hover {
  background: rgba(var(--color-galaxy-purple-rgb), 0.18);
  color: var(--color-bright-white);
}
.site-nav__link:focus-visible {
  outline: 2px solid var(--color-star-gold);
  outline-offset: 2px;
}
.site-nav__link[aria-current="page"] {
  background: var(--color-galaxy-purple);
  color: var(--color-bright-white);
  box-shadow: 0 2px 12px rgba(var(--color-galaxy-purple-rgb), 0.35);
}
.site-nav__link[aria-current="page"]:hover {
  background: var(--color-galaxy-purple);
  color: var(--color-bright-white);
  box-shadow: 0 4px 20px rgba(var(--color-galaxy-purple-rgb), 0.5);
}
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  .site-nav {
    position: fixed;
    top: 76px;
    left: 12px;
    right: 12px;
    background: rgba(var(--color-deep-blue-rgb), 0.92);
    backdrop-filter: var(--nav-blur);
    -webkit-backdrop-filter: var(--nav-blur);
    border: 1px solid rgba(var(--color-galaxy-purple-rgb), 0.2);
    border-radius: var(--radius-md);
    padding: 1rem 0.75rem;
    opacity: 0;
    transform: scale(0.92) translateY(-8px);
    pointer-events: none;
    transition: opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1), transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-float);
  }
  .site-nav[data-open] {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: auto;
  }
  .site-nav__list {
    flex-direction: column;
    gap: 0.25rem;
    width: 100%;
  }
  .site-nav__item {
    width: 100%;
    opacity: 0;
    transform: translateY(8px) scale(0.95);
    transition: opacity 0.3s ease, transform 0.3s ease;
  }
  .site-nav[data-open] .site-nav__item {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  .site-nav[data-open] .site-nav__item:nth-child(1) { transition-delay: 0.05s; }
  .site-nav[data-open] .site-nav__item:nth-child(2) { transition-delay: 0.10s; }
  .site-nav[data-open] .site-nav__item:nth-child(3) { transition-delay: 0.15s; }
  .site-nav[data-open] .site-nav__item:nth-child(4) { transition-delay: 0.20s; }
  .site-nav[data-open] .site-nav__item:nth-child(5) { transition-delay: 0.25s; }
  .site-nav[data-open] .site-nav__item:nth-child(6) { transition-delay: 0.30s; }
  .site-nav__link {
    padding: 0.75rem 1.25rem;
    font-size: 1rem;
    border-radius: var(--radius-sm);
    width: 100%;
    text-align: center;
  }
  .site-header {
    top: 8px;
    width: calc(100% - 16px);
    border-radius: var(--radius-md);
  }
  .site-header__inner {
    padding: 0 0.75rem;
  }
  .site-header__brand-text {
    font-size: 1.1rem;
  }
}
@media (min-width: 769px) and (max-width: 1024px) {
  .site-nav__link {
    padding: 0.45rem 0.9rem;
    font-size: 0.85rem;
  }
}
.site-footer {
  background: var(--color-deep-black);
  border-top: 1px solid var(--color-border);
  margin-top: 4rem;
  padding: 3rem 1.25rem 2rem;
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-galaxy-purple), var(--color-star-gold), transparent);
  opacity: 0.3;
}
.site-footer__inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.site-footer__top {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.site-footer__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.site-footer__brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}
.site-footer__brand-icon svg {
  width: 100%;
  height: 100%;
}
.site-footer__brand-text {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-bright-white);
  letter-spacing: 0.04em;
}
.site-footer__trust {
  font-size: var(--caption-size);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 480px;
}
.site-footer__mid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0;
  border-top: 1px solid rgba(var(--color-border), 0.5);
  border-bottom: 1px solid rgba(var(--color-border), 0.5);
}
.site-footer__links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
}
.site-footer__link {
  font-size: 0.875rem;
  color: var(--color-cold-white);
  transition: color var(--transition-smooth);
  padding: 0.25rem 0.125rem;
}
.site-footer__link:hover {
  color: var(--color-star-gold);
}
.site-footer__link:focus-visible {
  outline: 2px solid var(--color-star-gold);
  outline-offset: 2px;
  border-radius: 4px;
}
.site-footer__sep {
  color: var(--color-border);
  font-size: 0.875rem;
  user-select: none;
}
.site-footer__contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.site-footer__contact-phone {
  letter-spacing: 0.02em;
}
.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}
.site-footer__icp {
  opacity: 0.8;
}
.site-footer__note {
  opacity: 0.8;
  letter-spacing: 0.02em;
}
@media (max-width: 600px) {
  .site-footer {
    padding: 2rem 1rem 1.5rem;
  }
  .site-footer__mid {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
  .site-footer__contact {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
  }
  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}
.container {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 100px;
  transition: background var(--transition-smooth), color var(--transition-smooth), box-shadow var(--transition-smooth), transform var(--transition-smooth);
  cursor: pointer;
  border: 1px solid transparent;
  letter-spacing: 0.02em;
  white-space: nowrap;
  text-align: center;
}
.btn:focus-visible {
  outline: 2px solid var(--color-star-gold);
  outline-offset: 4px;
}
.btn--primary {
  background: var(--color-galaxy-purple);
  color: var(--color-bright-white);
  border-color: var(--color-galaxy-purple);
  box-shadow: 0 2px 12px rgba(var(--color-galaxy-purple-rgb), 0.3);
}
.btn--primary:hover {
  background: rgba(var(--color-galaxy-purple-rgb), 0.85);
  box-shadow: 0 4px 24px rgba(var(--color-galaxy-purple-rgb), 0.45);
  transform: translateY(-1px);
  color: var(--color-bright-white);
}
.btn--ghost {
  background: transparent;
  color: var(--color-cold-white);
  border-color: var(--color-border);
}
.btn--ghost:hover {
  background: rgba(var(--color-cold-white), 0.06);
  border-color: var(--color-galaxy-purple);
  color: var(--color-bright-white);
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  padding: 0.75rem 0;
}
.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition-smooth);
}
.breadcrumb a:hover {
  color: var(--color-star-gold);
}
.breadcrumb span[aria-current="page"] {
  color: var(--color-cold-white);
  font-weight: 500;
}
.breadcrumb__sep {
  color: var(--color-border);
  user-select: none;
  font-size: 0.75rem;
}
.section-title {
  font-family: var(--font-heading);
  font-size: var(--heading-size);
  font-weight: 700;
  color: var(--color-bright-white);
  letter-spacing: 0.02em;
  line-height: 1.2;
  margin-bottom: 0.75rem;
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--color-galaxy-purple);
  border-radius: 2px;
  margin-top: 0.6rem;
}
.section-title__sub {
  display: block;
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  margin-top: 0.25rem;
  writing-mode: horizontal-tb;
}
.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-float);
  border-color: rgba(var(--color-galaxy-purple-rgb), 0.3);
}
.card:focus-within {
  border-color: var(--color-galaxy-purple);
  box-shadow: 0 0 0 3px rgba(var(--color-galaxy-purple-rgb), 0.15);
}
.card__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-bright-white);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}
.card__text {
  font-size: var(--body-size);
  color: var(--color-cold-white);
  line-height: 1.6;
  opacity: 0.85;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
@media (max-width: 600px) {
  .grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}
.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}
@media (max-width: 768px) {
  .grid--2 {
    grid-template-columns: 1fr;
  }
}
.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .grid--3 {
    grid-template-columns: 1fr;
  }
}
.grid__item {
  min-width: 0;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-bright-white);
  letter-spacing: 0.02em;
  line-height: 1.3;
}
h1 { font-size: clamp(2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.75rem); }
p {
  margin-bottom: 1rem;
  color: var(--color-cold-white);
}
small, .text-caption {
  font-size: var(--caption-size);
  color: var(--color-text-muted);
}
::marker {
  color: var(--color-galaxy-purple);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .scroll-progress {
    display: none;
  }
  .site-nav {
    transition: none !important;
  }
  .site-nav__item {
    transition: none !important;
  }
  .site-nav[data-open] {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .site-nav[data-open] .site-nav__item {
    opacity: 1;
    transform: none;
  }
  .card:hover {
    transform: none;
  }
  .btn:hover {
    transform: none;
  }
}
@media (max-width: 480px) {
  .site-header__brand-text {
    font-size: 1rem;
  }
  .site-footer__brand-text {
    font-size: 1rem;
  }
  .container {
    padding: 0 1rem;
  }
}