.yusoong-root {
  --ys-base: #f9f9f9;
  --ys-text: #1a1a1a;
  --ys-muted: #4a5568;
  --ys-line: rgba(26, 26, 26, 0.12);
  --ys-line-strong: rgba(26, 26, 26, 0.2);
  --ys-surface: #ffffff;
  --ys-shadow: 0 20px 60px rgba(26, 26, 26, 0.04);
  --ys-sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --ys-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --ys-mono: "JetBrains Mono", "SFMono-Regular", "Menlo", "Monaco", "Consolas", "Liberation Mono", monospace;
  min-height: 100vh;
  background: var(--ys-base);
  color: var(--ys-text);
  font-family: var(--ys-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.yusoong-root * {
  box-sizing: border-box;
}

.yusoong-root a {
  color: inherit;
  text-decoration: none;
}

.yusoong-root button {
  font: inherit;
}

.yusoong-root .ys-container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.yusoong-root .ys-nav-minimal {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(249, 249, 249, 0.84);
  border-bottom: 1px solid rgba(26, 26, 26, 0.06);
}

.yusoong-root .ys-nav-container {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.yusoong-root .ys-brand,
.yusoong-root .ys-profile-kicker,
.yusoong-root .ys-profile-meta {
  font-family: var(--ys-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.yusoong-root .ys-brand {
  font-size: 13px;
  font-weight: 700;
}

.yusoong-root .ys-nav-product {
  color: var(--ys-muted);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.18s ease, opacity 0.18s ease;
}

.yusoong-root .ys-nav-product:hover {
  color: var(--ys-text);
}

.yusoong-root .ys-hero {
  padding: 128px 0 96px;
}

.yusoong-root .ys-hero-container {
  min-height: calc(100vh - 180px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.yusoong-root .ys-main-title,
.yusoong-root .ys-statement h2,
.yusoong-root .ys-section-title,
.yusoong-root .ys-profile-title,
.yusoong-root .ys-profile-section h2 {
  margin: 0;
  font-family: var(--ys-serif);
  font-weight: 600;
  letter-spacing: 0;
}

.yusoong-root .ys-main-title {
  max-width: 980px;
  font-size: clamp(48px, 8vw, 104px);
  line-height: 0.96;
}

.yusoong-root .ys-serif-italic {
  font-style: italic;
}

.yusoong-root .ys-sub-lead {
  max-width: 760px;
  margin: 28px 0 0;
  color: var(--ys-muted);
  font-size: 20px;
  line-height: 1.8;
}

.yusoong-root .ys-section,
.yusoong-root .ys-profile-hero,
.yusoong-root .ys-profile-section {
  padding: 112px 0;
  border-top: 1px solid var(--ys-line);
}

.yusoong-root .ys-statement,
.yusoong-root .ys-section-copy,
.yusoong-root .ys-profile-copy,
.yusoong-root .ys-profile-container {
  max-width: 860px;
}

.yusoong-root .ys-statement h2,
.yusoong-root .ys-section-title,
.yusoong-root .ys-profile-title,
.yusoong-root .ys-profile-section h2 {
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.06;
}

.yusoong-root .ys-statement p,
.yusoong-root .ys-section-copy p,
.yusoong-root .ys-profile-section p,
.yusoong-root .ys-footer p {
  margin: 18px 0 0;
  color: var(--ys-muted);
  font-size: 18px;
  line-height: 1.85;
}

.yusoong-root .ys-text-link {
  display: inline-flex;
  align-items: center;
  margin-top: 24px;
  color: var(--ys-text);
  font-size: 15px;
  font-weight: 600;
  border-bottom: 1px solid var(--ys-line-strong);
  transition: border-color 0.18s ease, opacity 0.18s ease;
}

.yusoong-root .ys-text-link:hover {
  opacity: 0.72;
  border-color: var(--ys-text);
}

.yusoong-root .ys-profile-hero {
  border-top: 0;
  padding-bottom: 48px;
}

.yusoong-root .ys-profile-section.is-first {
  padding-top: 0;
  border-top: 0;
}

.yusoong-root .ys-profile-kicker {
  margin: 0 0 18px;
  color: var(--ys-muted);
  font-size: 12px;
  font-weight: 600;
}

.yusoong-root .ys-profile-meta {
  margin: 0 0 28px;
  color: var(--ys-muted);
  font-size: 12px;
}

.yusoong-root .ys-slideshow {
  max-width: 860px;
  position: relative;
  margin: 0 auto 16px;
  border: 1px solid var(--ys-line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--ys-surface);
  box-shadow: var(--ys-shadow);
}

.yusoong-root .ys-slide-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: 560px;
  object-fit: contain;
  background: var(--ys-base);
}

.yusoong-root .ys-caption {
  padding: 16px;
  border-top: 1px solid var(--ys-line);
  background: var(--ys-surface);
  color: var(--ys-text);
  font-size: 14px;
  line-height: 1.6;
  text-align: center;
}

.yusoong-root .ys-slide-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  padding: 16px 20px;
  border: 0;
  border-radius: 0 4px 4px 0;
  background: rgba(0, 0, 0, 0.15);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease;
}

.yusoong-root .ys-slide-control:hover {
  background: rgba(0, 0, 0, 0.6);
}

.yusoong-root .ys-slide-control.is-next {
  right: 0;
  border-radius: 4px 0 0 4px;
}

.yusoong-root .ys-slide-dots {
  margin-bottom: 48px;
  text-align: center;
}

.yusoong-root .ys-dot {
  width: 6px;
  height: 6px;
  margin: 0 4px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--ys-line-strong);
  cursor: pointer;
}

.yusoong-root .ys-dot.is-active,
.yusoong-root .ys-dot:hover {
  background: var(--ys-text);
}

.yusoong-root .ys-bio {
  display: grid;
  gap: 18px;
}

.yusoong-root .ys-bio p {
  margin: 0;
}

.yusoong-root .ys-source-box {
  margin-top: 48px;
  padding-left: 24px;
  border-left: 2px solid var(--ys-line-strong);
}

.yusoong-root .ys-source-grid {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 8px 24px;
  color: var(--ys-muted);
  font-size: 15px;
  line-height: 1.8;
}

.yusoong-root .ys-source-grid strong {
  color: var(--ys-text);
  font-weight: 500;
}

.yusoong-root .ys-source-grid a {
  color: var(--ys-text);
  text-decoration: underline;
}

.yusoong-root .ys-footer {
  border-top: 1px solid var(--ys-line);
}

.yusoong-root .ys-footer-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0 34px;
  flex-wrap: wrap;
}

.yusoong-root .ys-footer p {
  margin: 0;
}

.yusoong-root .ys-icp {
  font-size: 13px !important;
  opacity: 0.7;
}

.yusoong-root .ys-footer-sep {
  margin: 0 8px;
  opacity: 0.4;
}

@media (max-width: 720px) {
  .yusoong-root .ys-container {
    width: min(100%, calc(100% - 28px));
  }

  .yusoong-root .ys-nav-container {
    min-height: 62px;
  }

  .yusoong-root .ys-hero {
    padding: 96px 0 72px;
  }

  .yusoong-root .ys-section,
  .yusoong-root .ys-profile-hero,
  .yusoong-root .ys-profile-section {
    padding: 88px 0;
  }

  .yusoong-root .ys-sub-lead,
  .yusoong-root .ys-statement p,
  .yusoong-root .ys-section-copy p,
  .yusoong-root .ys-profile-section p,
  .yusoong-root .ys-footer p {
    font-size: 16px;
  }

  .yusoong-root .ys-footer-container {
    align-items: flex-start;
    flex-direction: column;
  }
}