/* mirror_flow:p6_ai_generated */
/* ===== CSS Variables ===== */
:root {
  /* Primary Palette */
  --primary-900: #0a2540;
  --primary-800: #0d2f52;
  --primary-700: #143d64;
  --primary-600: #1b4f7e;
  --primary-500: #1f5f94;
  --primary-400: #2c7ab5;
  --primary-300: #4a9cd4;
  --primary-200: #7abde8;
  --primary-100: #b3daf5;
  --primary-50: #e6f3fb;

  /* Accent - Warm Gold */
  --accent-700: #8b6914;
  --accent-600: #a67c1e;
  --accent-500: #c4952a;
  --accent-400: #d4a83a;
  --accent-300: #e0bc5a;
  --accent-200: #ebd08a;
  --accent-100: #f5e6bc;
  --accent-50: #fcf7ed;

  /* Neutrals */
  --neutral-900: #1a1a1a;
  --neutral-800: #2d2d2d;
  --neutral-700: #404040;
  --neutral-600: #595959;
  --neutral-500: #737373;
  --neutral-400: #8c8c8c;
  --neutral-300: #b0b0b0;
  --neutral-200: #cccccc;
  --neutral-100: #e6e6e6;
  --neutral-50: #f5f5f5;
  --white: #ffffff;

  /* Semantic */
  --success: #2e7d32;
  --warning: #e6a817;
  --error: #c0392b;
  --info: #1f5f94;

  /* Typography */
  --font-family-base: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-family-heading: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 18px 48px rgba(0, 0, 0, 0.12), 0 6px 12px rgba(0, 0, 0, 0.06);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Container */
  --container-max: 1200px;
  --container-padding: 1rem;

  /* Header */
  --header-height: 72px;
}

/* ===== Reset ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--neutral-800);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--primary-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-600);
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--neutral-900);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--spacing-md);
}

button {
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.container--narrow {
  max-width: 800px;
}

.container--wide {
  max-width: 1360px;
}

/* ===== Grid System ===== */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

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

/* ===== Flex Utilities ===== */
.flex {
  display: flex;
}

.flex--center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex--between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex--wrap {
  display: flex;
  flex-wrap: wrap;
}

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

.flex--gap-sm { gap: var(--spacing-sm); }
.flex--gap-md { gap: var(--spacing-md); }
.flex--gap-lg { gap: var(--spacing-lg); }
.flex--gap-xl { gap: var(--spacing-xl); }

/* ===== Section ===== */
.section {
  padding-top: var(--spacing-3xl);
  padding-bottom: var(--spacing-3xl);
}

.section--sm {
  padding-top: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
}

.section--lg {
  padding-top: var(--spacing-4xl);
  padding-bottom: var(--spacing-4xl);
}

.section--gray {
  background-color: var(--neutral-50);
}

.section--primary {
  background-color: var(--primary-900);
  color: var(--white);
}

.section--primary h1,
.section--primary h2,
.section--primary h3,
.section--primary h4,
.section--primary h5,
.section--primary h6 {
  color: var(--white);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--neutral-900);
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--neutral-500);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.section--primary .section__subtitle {
  color: var(--primary-100);
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: box-shadow var(--transition-base);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.header__logo img {
  height: 44px;
  width: auto;
}

.header__logo-text {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--primary-800);
  white-space: nowrap;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.header__nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--neutral-700);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

.header__nav-link:hover {
  color: var(--primary-500);
  background-color: var(--primary-50);
}

.header__nav-link--active {
  color: var(--primary-500);
  background-color: var(--primary-50);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.header__mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  padding: 8px;
  gap: 5px;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.header__mobile-toggle:hover {
  background-color: var(--neutral-50);
}

.header__mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--neutral-700);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.header__mobile-toggle--active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__mobile-toggle--active span:nth-child(2) {
  opacity: 0;
}

.header__mobile-toggle--active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero / Banner ===== */
.hero {
  position: relative;
  background-color: var(--primary-900);
  background-image: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-700) 50%, var(--primary-600) 100%);
  color: var(--white);
  padding-top: var(--spacing-4xl);
  padding-bottom: var(--spacing-4xl);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero__content h1 {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: var(--white);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.hero__content p {
  font-size: var(--font-size-lg);
  color: var(--primary-100);
  margin-bottom: var(--spacing-xl);
  max-width: 540px;
}

.hero__image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__image img {
  max-width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.7rem 1.75rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1.5;
  text-decoration: none;
}

.btn--primary {
  background-color: var(--primary-500);
  color: var(--white);
}

.btn--primary:hover {
  background-color: var(--primary-600);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--accent {
  background-color: var(--accent-500);
  color: var(--white);
}

.btn--accent:hover {
  background-color: var(--accent-600);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background-color: transparent;
  color: var(--primary-500);
  border: 2px solid var(--primary-500);
}

.btn--outline:hover {
  background-color: var(--primary-500);
  color: var(--white);
}

.btn--outline-light {
  background-color: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn--outline-light:hover {
  background-color: var(--white);
  color: var(--primary-800);
  border-color: var(--white);
}

.btn--lg {
  padding: 0.9rem 2.25rem;
  font-size: var(--font-size-base);
  border-radius: var(--radius-lg);
}

.btn--sm {
  padding: 0.45rem 1.25rem;
  font-size: var(--font-size-xs);
}

.btn--block {
  width: 100%;
}

/* ===== Card ===== */
.card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}

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

.card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: