:root {
  --color-primary: #1a2b4a;
  --color-primary-light: #2f4a7a;
  --color-primary-lighter: #3f6fb5;
  --color-accent: #f5b301;
  --color-accent-warm: #ff8a3d;
  --color-bg: #f4f7fc;
  --color-bg-alt: #eef3fb;
  --color-surface: #ffffff;
  --color-surface-glass: rgba(255, 255, 255, 0.72);
  --color-text: #1c2536;
  --color-text-soft: #4a5568;
  --color-text-muted: #718096;
  --color-border: #dbe4f0;
  --color-border-soft: rgba(26, 43, 74, 0.08);
  --shadow-sm: 0 2px 8px rgba(26, 43, 74, 0.06);
  --shadow-md: 0 8px 28px rgba(26, 43, 74, 0.1);
  --shadow-lg: 0 18px 48px rgba(26, 43, 74, 0.16);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 72px;
  --maxw: 1200px;
}

html[data-theme="dark"],
html.dark {
  --color-bg: #0d1524;
  --color-bg-alt: #111c30;
  --color-surface: #16233a;
  --color-surface-glass: rgba(22, 35, 58, 0.72);
  --color-text: #e6eefb;
  --color-text-soft: #b8c7de;
  --color-text-muted: #8a9bb5;
  --color-border: #24344f;
  --color-border-soft: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.5);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

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

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

a:hover,
a:focus-visible {
  color: var(--color-accent);
}

h1, h2, h3, h4 {
  line-height: 1.35;
  color: var(--color-text);
  font-weight: 700;
  margin: 0 0 0.6em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(1.8rem, 4.2vw, 2.9rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.2vw, 1.35rem); }

p {
  margin: 0 0 1em;
  color: var(--color-text-soft);
}

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.4em;
  color: var(--color-text-soft);
}

li {
  margin-bottom: 0.5em;
}

strong {
  color: var(--color-text);
  font-weight: 600;
}

blockquote {
  margin: 1.2em 0;
  padding: 1em 1.4em;
  border-left: 4px solid var(--color-accent);
  background: var(--color-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: var(--shadow-sm);
}

blockquote p {
  margin: 0;
  font-style: italic;
  color: var(--color-text);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

#app {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
  width: 100%;
}

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface-glass);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--color-border-soft);
  box-shadow: 0 2px 18px rgba(26, 43, 74, 0.06);
  transition: background-color var(--transition), box-shadow var(--transition);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  min-height: var(--header-h);
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.brand:hover { color: var(--color-text); }

.brand svg {
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(26, 43, 74, 0.25);
  transition: transform var(--transition);
}

.brand:hover svg { transform: rotate(-6deg) scale(1.05); }

.brand-name {
  background: linear-gradient(120deg, var(--color-primary) 0%, var(--color-primary-lighter) 60%, var(--color-accent) 120%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

html[data-theme="dark"] .brand-name,
html.dark .brand-name {
  background: linear-gradient(120deg, #e6eefb 0%, #8fb8e8 55%, var(--color-accent) 110%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.main-nav {
  flex: 1 1 auto;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.main-nav li { margin: 0; }

.main-nav a {
  display: inline-block;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  color: var(--color-text-soft);
  font-size: 0.92rem;
  font-weight: 500;
  position: relative;
  transition: color var(--transition), background-color var(--transition), transform var(--transition);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-warm));
  transform: translateX(-50%);
  transition: width var(--transition);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--color-text);
  background: rgba(245, 179, 1, 0.1);
  transform: translateY(-1px);
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after { width: 60%; }

.site-search {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 4px 4px 4px 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
  flex-shrink: 0;
}

.site-search:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(245, 179, 1, 0.18);
}

.site-search input {
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.88rem;
  width: 150px;
  padding: 6px 0;
}

.site-search input::placeholder { color: var(--color-text-muted); }

.site-search button {
  border: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  color: #1a2b4a;
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-warm));
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  transition: transform var(--transition), box-shadow var(--transition);
}

.site-search button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(245, 179, 1, 0.42);
}

.theme-toggle {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  color: var(--color-text);
  font-size: 1.1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), background-color var(--transition), border-color var(--transition);
}

.theme-toggle:hover {
  transform: rotate(180deg);
  border-color: var(--color-accent);
}

.theme-icon { line-height: 1; }

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  cursor: pointer;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-shrink: 0;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Breadcrumb ============ */
.breadcrumb {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 20px 0;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.breadcrumb li {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--color-text-muted);
  opacity: 0.6;
}

.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb [aria-current="page"] { color: var(--color-text); font-weight: 600; }

/* ============ Hero ============ */
.hero {
  position: relative;
  max-width: var(--maxw);
  margin: 20px auto 0;
  padding: clamp(28px, 5vw, 56px) clamp(20px, 5vw, 56px);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 12% 18%, rgba(245, 179, 1, 0.28), transparent 42%),
    radial-gradient(circle at 88% 82%, rgba(63, 111, 181, 0.35), transparent 48%),
    linear-gradient(135deg, #1a2b4a 0%, #223a63 42%, #2f4a7a 72%, #1a2b4a 100%);
  background-size: 200% 200%;
  color: #e6eefb;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: heroGradient 18s ease infinite;
}

@keyframes heroGradient {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 42px 42px;
  pointer-events: none;
  mask-image: radial-gradient(circle at 50% 40%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 30%, transparent 78%);
}

.hero-slides {
  position: relative;
  min-height: 240px;
  z-index: 1;
}

.slide {
  display: none;
  animation: slideFade 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide.is-active { display: block; }

@keyframes slideFade {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero h1,
.hero h2 {
  color: #ffffff;
  margin-bottom: 0.5em;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.25);
}

.hero h1 {
  background: linear-gradient(100deg, #ffffff 0%, #ffe6a8 55%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: clamp(0.98rem, 1.6vw, 1.12rem);
  color: rgba(230, 238, 251, 0.9);
  max-width: 66ch;
}

.hero-sub {
  font-size: 0.9rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), color var(--transition);
  will-change: transform;
}

.btn-primary {
  color: #1a2b4a;
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-warm));
  box-shadow: 0 8px 24px rgba(245, 179, 1, 0.35);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  color: #1a2b4a;
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(245, 179, 1, 0.5);
}

.btn-ghost {
  color: #e6eefb;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.16);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.hero-controls {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
}

.slide-prev,
.slide-next {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background-color var(--transition), transform var(--transition);
}

.slide-prev:hover,
.slide-next:hover {
  background: rgba(245, 179, 1, 0.85);
  color: #1a2b4a;
  transform: scale(1.08);
}

.slide-dots {
  display: flex;
  gap: 8px;
}

.slide-dots button {
  width: 10px;
  height: 10px;
  padding: 0;
  border-radius: 50%;
  border: 0;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.3);
  transition: width var(--transition), background-color var(--transition);
}

.slide-dots button[aria-selected="true"] {
  width: 26px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-warm));
}

.hero-visual {
  position: relative;
  z-index: 1;
  margin: 32px 0 0;
}

.hero-visual svg {
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  transition: transform var(--transition);
}

.hero-visual:hover svg { transform: translateY(-4px) scale(1.01); }

/* ============ Stats ============ */
.stats {
  max-width: var(--maxw);
  margin: 28px auto 0;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.stat {
  position: relative;
  padding: 24px 20px;
  text-align: center;
  border-radius: var(--radius-md);
  background: var(--color-surface-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--color-border-soft);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.stat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-warm), var(--color-primary-lighter));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.stat:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.stat:hover::before { transform: scaleX(1); }

.stat-num {
  display: block;
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(120deg, var(--color-primary-lighter), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.stat-label {
  display: block;
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ============ Section base ============ */
.section {
  max-width: var(--maxw);
  margin: 28px auto 0;
  padding: clamp(26px, 4vw, 44px) clamp(20px, 4vw, 48px);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-soft);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.4, 0, 0.2, 1), background-color var(--transition), box-shadow var(--transition);
}

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

.section > h2 {
  position: relative;
  padding-bottom: 14px;
  margin-bottom: 22px;
}

.section > h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 64px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-warm));
}

.section h3 {
  margin-top: 1.6em;
  color: var(--color-primary-light);
}

html[data-theme="dark"] .section h3,
html.dark .section h3 {
  color: #8fb8e8;
}

/* ============ Timeline ============ */
.timeline {
  list-style: none;
  padding: 0;
  margin: 1em 0 1.4em;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-primary-lighter));
  border-radius: 2px;
}

.timeline li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 14px;
  transition: transform var(--transition);
}

.timeline li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 3px solid var(--color-accent);
  box-shadow: 0 0 0 4px rgba(245, 179, 1, 0.15);
  transition: transform var(--transition), box-shadow var(--transition);
}

.timeline li:hover { transform: translateX(4px); }
.timeline li:hover::before {
  transform: scale(1.15);
  box-shadow: 0 0 0 6px rgba(245, 179, 1, 0.22);
}

/* ============ Figure ============ */
.figure {
  margin: 1.6em 0 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border-soft);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.figure figcaption {
  padding: 12px 18px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border-soft);
}

/* ============ Advantage list ============ */
.advantage-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}

.advantage-list li {
  position: relative;
  margin: 0;
  padding: 16px 18px 16px 46px;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.advantage-list li::before {
  content: "✓";
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #1a2b4a;
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-warm));
}

.advantage-list li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

/* ============ Steps ============ */
.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  display: grid;
  gap: 14px;
}

.steps li {
  counter-increment: step;
  position: relative;
  margin: 0;
  padding: 18px 20px 18px 64px;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 18px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #1a2b4a;
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-warm));
  box-shadow: 0 4px 12px rgba(245, 179, 1, 0.32);
}

.steps li:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

/* ============ Article grid ============ */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.article-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 22px;
  border-radius: var(--radius-md);
  background: var(--color-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border-soft);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.article-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-warm));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(245, 179, 1, 0.4);
}

.article-card:hover::before { transform: scaleX(1); }

.article-card h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  line-height: 1.5;
}

.article-card h3 a { color: var(--color-text); }
.article-card h3 a:hover { color: var(--color-accent); }

.article-card .meta {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: 10px;
  letter-spacing: 0.01em;
}

.article-card p {
  font-size: 0.9rem;
  margin-bottom: 14px;
  flex: 1 1 auto;
}

.read-more {
  align-self: flex-start;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary-lighter);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(63, 111, 181, 0.08);
  transition: background-color var(--transition), color var(--transition), transform var(--transition);
}

.read-more:hover {
  color: #1a2b4a;
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-warm));
  transform: translateX(3px);
}

/* ============ FAQ ============ */
.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition), background-color var(--transition);
}

.faq-list details[open] {
  border-color: rgba(245, 179, 1, 0.45);
  box-shadow: var(--shadow-md);
  background: var(--color-surface);
}

.faq-list summary {
  position: relative;
  cursor: pointer;
  padding: 16px 48px 16px 20px;
  font-weight: 600;
  color: var(--color-text);
  list-style: none;
  transition: color var(--transition);
}

.faq-list summary::-webkit-details-marker { display: none; }

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-primary-lighter);
  background: rgba(63, 111, 181, 0.1);
  transition: transform var(--transition), background-color var(--transition), color var(--transition);
}

.faq-list details[open] summary::after {
  content: "−";
  color: #1a2b4a;
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-warm));
  transform: translateY(-50%) rotate(180deg);
}

.faq-list summary:hover { color: var(--color-accent); }

.faq-list details p {
  margin: 0;
  padding: 0 20px 18px;
  font-size: 0.92rem;
  animation: faqFade 0.35s ease;
}

@keyframes faqFade {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ Contact ============ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 12px;
}

.contact-grid > div {
  padding: 22px;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-grid > div:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.contact-grid h3 { margin-top: 0; }

.contact-grid p { font-size: 0.92rem; margin-bottom: 0.6em; }

.contact-grid ul { font-size: 0.92rem; }

/* ============ Sitemap ============ */
.sitemap-list,
.friend-links {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 1.4em;
}

.sitemap-list li,
.friend-links li { margin: 0; }

.sitemap-list a,
.friend-links a {
  display: inline-block;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.86rem;
  color: var(--color-text-soft);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  transition: transform var(--transition), color var(--transition), background-color var(--transition), border-color var(--transition);
}

.sitemap-list a:hover,
.friend-links a:hover {
  color: #1a2b4a;
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-warm));
  border-color: transparent;
  transform: translateY(-3px);
}

/* ============ Legal ============ */
.update-info {
  margin-top: 1.4em;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  border-left: 3px solid var(--color-accent);
}

/* ============ Footer ============ */
.site-footer {
  margin-top: 40px;
  background: linear-gradient(160deg, #1a2b4a 0%, #223a63 55%, #16233a 100%);
  color: #c9d8f0;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 179, 1, 0.22), transparent 70%);
  pointer-events: none;
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 36px 20px 30px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer-inner p {
  margin: 0 0 8px;
  font-size: 0.84rem;
  color: #a9bcd8;
  line-height: 1.7;
}

.footer-inner p:last-child {
  margin-bottom: 0;
  color: var(--color-accent);
  font-weight: 500;
}

/* ============ Back to top ============ */
.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 26px;
  z-index: 90;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 0;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 700;
  color: #1a2b4a;
  background: linear-gradient(120deg, var(--color-accent), var(--color-accent-warm));
  box-shadow: 0 8px 24px rgba(245, 179, 1, 0.42);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition), box-shadow var(--transition);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 14px 32px rgba(245, 179, 1, 0.55);
}

/* ============ Scroll reveal helpers ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .section,
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .header-inner {
    gap: 14px;
  }
  .site-search input { width: 120px; }
  .main-nav a { padding: 8px 9px; font-size: 0.88rem; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .menu-toggle { display: inline-flex; }

  .header-inner {
    flex-wrap: wrap;
    padding: 12px 16px;
    gap: 12px;
  }

  .brand { flex: 1 1 auto; }

  .main-nav {
    order: 5;
    flex: 1 0 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .main-nav.is-open {
    max-height: 520px;
    padding-top: 8px;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .main-nav a {
    display: block;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
  }

  .main-nav a::after { display: none; }

  .site-search {
    order: 6;
    flex: 1 0 100%;
    margin-top: 4px;
  }

  .site-search input { flex: 1 1 auto; width: auto; }

  .hero { margin-top: 16px; }

  .hero-slides { min-height: 0; }

  .hero-visual { margin-top: 24px; }

  .section { margin-top: 20px; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }

  .header-inner { padding: 10px 14px; }

  .brand-name { font-size: 1rem; }

  .brand svg { width: 34px; height: 34px; }

  .breadcrumb { padding: 14px 14px 0; }

  .hero {
    margin: 12px 12px 0;
    padding: 24px 18px;
    border-radius: var(--radius-md);
  }

  .hero-actions { gap: 10px; }

  .btn { padding: 11px 20px; font-size: 0.9rem; }

  .stats {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 0 12px;
    margin-top: 18px;
  }

  .stat { padding: 18px 12px; }

  .section {
    margin: 16px 12px 0;
    padding: 22px 18px;
    border-radius: var(--radius-md);
  }

  .article-grid { grid-template-columns: 1fr; gap: 14px; }

  .advantage-list { grid-template-columns: 1fr; }

  .contact-grid { grid-template-columns: 1fr; gap: 14px; }

  .steps li { padding: 16px 16px 16px 58px; }

  .steps li::before { left: 14px; top: 16px; }

  .faq-list summary { padding: 14px 44px 14px 16px; font-size: 0.94rem; }

  .faq-list details p { padding: 0 16px 16px; }

  .back-to-top { right: 14px; bottom: 16px; width: 42px; height: 42px; }

  .footer-inner { padding: 28px 16px 24px; }
}

@media (max-width: 380px) {
  .stats { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
}

/* ============ Focus & selection ============ */
:focus-visible {
  outline: 3px solid rgba(245, 179, 1, 0.65);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background: rgba(245, 179, 1, 0.35);
  color: var(--color-text);
}

/* ============ Scrollbar ============ */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--color-bg-alt); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-primary-lighter), var(--color-primary));
  border-radius: 10px;
  border: 2px solid var(--color-bg-alt);
}
::-webkit-scrollbar-thumb:hover { background: var(--color-accent); }

/* ============ Print ============ */
@media print {
  .site-header,
  .site-search,
  .theme-toggle,
  .menu-toggle,
  .hero-controls,
  .back-to-top,
  .site-footer { display: none !important; }
  .section { opacity: 1 !important; transform: none !important; box-shadow: none; border: 1px solid #ccc; }
  body { background: #fff; color: #000; }
}