/* ==========================================================================
   YUEXI ONE — Editorial Canvas Design System
   Aesthetic: Fine Art Paper, Gallery Minimal, Ivory White, Restrained
   ========================================================================== */

:root {
  /* Color Palette: Gallery Warm White & Ink Tones */
  --bg-canvas: #fcfbf9;
  --bg-surface: #ffffff;
  --bg-card: #f8f6f0;
  --bg-card-hover: #f3f0e8;

  --ink-primary: #181816;
  --ink-secondary: #575651;
  --ink-muted: #8c8b84;
  --ink-faint: #d5d3cb;
  --border-subtle: #eae7df;
  --border-strong: #181816;

  /* Typography */
  --font-serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Spacing */
  --max-width: 1040px;
  --header-height: 84px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-canvas);
  color: var(--ink-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--ink-primary);
  line-height: 1.7;
  font-weight: 300;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Subtle Art Canvas Texture Simulation via Pure CSS */
.canvas-grain {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 100;
  opacity: 0.28;
  background-image: 
    radial-gradient(rgba(0, 0, 0, 0.05) 1px, transparent 1px),
    radial-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px);
  background-size: 8px 8px, 16px 16px;
  background-position: 0 0, 4px 4px;
}

/* Layout Container */
.page-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

/* Site Header */
.site-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
}

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

.brand-logo {
  text-decoration: none;
  color: var(--ink-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  letter-spacing: 0.08em;
}

.brand-emblem {
  width: 26px;
  height: 26px;
  display: block;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.brand-logo:hover .brand-emblem {
  transform: rotate(-6deg) scale(1.04);
  border-color: var(--ink-secondary);
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.logo-sub {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--ink-muted);
}

.header-meta {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--ink-muted);
  text-transform: uppercase;
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.meta-divider {
  color: var(--ink-faint);
}

/* Common UI Icon Class */
.ui-icon {
  display: inline-block;
  vertical-align: middle;
  stroke-width: 1.8;
  color: currentColor;
  flex-shrink: 0;
}

/* Badge & Section Tags */
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  font-weight: 500;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 2rem;
}

.art-frame-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 1.5rem;
}

/* Hero Section */
.hero-section {
  padding: 6.5rem 0 5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  line-height: 1.08;
  font-weight: 400;
  color: var(--ink-primary);
  letter-spacing: -0.01em;
  margin-bottom: 2.2rem;
}

.hero-title em {
  font-style: italic;
  font-weight: 400;
  color: var(--ink-secondary);
}

.hero-lead {
  font-size: 1.15rem;
  max-width: 650px;
  color: var(--ink-secondary);
  line-height: 1.8;
  font-weight: 300;
}

/* Statement / About Section */
.statement-section {
  padding: 5.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.statement-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4.5rem;
  align-items: start;
}

.statement-heading {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 500;
  line-height: 1.25;
  margin-bottom: 1.8rem;
  color: var(--ink-primary);
}

.statement-body p {
  font-size: 1.05rem;
  color: var(--ink-secondary);
  line-height: 1.85;
  margin-bottom: 1.5rem;
}

.statement-body p strong {
  font-weight: 500;
  color: var(--ink-primary);
}

.statement-body p:last-child {
  margin-bottom: 0;
}

/* Statement Sidebar */
.statement-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.detail-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 1.5rem 1.6rem;
  border-radius: 2px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.detail-card:hover {
  border-color: var(--ink-faint);
  transform: translateY(-2px);
}

.detail-header {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.45rem;
}

.detail-icon {
  color: var(--ink-muted);
}

.detail-label {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  font-weight: 500;
}

.detail-value {
  font-size: 0.95rem;
  color: var(--ink-primary);
  font-weight: 400;
  line-height: 1.5;
}

/* Channels Section */
.channels-section {
  padding: 5.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-subtitle {
  font-size: 0.98rem;
  color: var(--ink-secondary);
  margin-top: -1rem;
  margin-bottom: 2.8rem;
  max-width: 600px;
}

.channel-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border-subtle);
}

.channel-row {
  display: grid;
  grid-template-columns: 1.5fr 1.5fr 1fr;
  align-items: center;
  padding: 1.6rem 1.2rem;
  border-bottom: 1px solid var(--border-subtle);
  text-decoration: none;
  color: var(--ink-primary);
  background-color: transparent;
  transition: background-color 0.25s ease, padding-left 0.25s ease;
}

.channel-row:hover {
  background-color: var(--bg-card);
  padding-left: 1.8rem;
}

.channel-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.platform-title-group {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.platform-icon {
  color: var(--ink-primary);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.channel-row:hover .platform-icon {
  transform: scale(1.1);
}

.platform-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
}

.channel-handle {
  font-size: 0.8rem;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
  padding-left: 1.9rem;
}

.channel-note {
  font-size: 0.88rem;
  color: var(--ink-secondary);
}

.channel-action {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.4rem;
  text-align: right;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  font-weight: 500;
  transition: color 0.2s ease;
}

.action-icon {
  transition: transform 0.2s ease;
  color: currentColor;
}

.channel-row:hover .channel-action {
  color: var(--ink-primary);
}

.channel-row:hover .action-icon {
  transform: translate(2px, -2px);
}

/* Inquiry / Contact Section */
.inquiry-section {
  padding: 6rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.inquiry-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 3.5rem;
  text-align: center;
  max-width: 780px;
  margin: 0 auto;
}

.inquiry-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 400;
  margin-bottom: 1.2rem;
}

.inquiry-desc {
  font-size: 1rem;
  color: var(--ink-secondary);
  max-width: 540px;
  margin: 0 auto 2.4rem;
  line-height: 1.7;
}

.email-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 0.6rem 0.6rem 0.6rem 1.2rem;
  border-radius: 2px;
}

.email-icon {
  color: var(--ink-muted);
  flex-shrink: 0;
}

.email-link {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  color: var(--ink-primary);
  text-decoration: none;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.email-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--ink-primary);
  color: var(--bg-surface);
  border: 1px solid var(--ink-primary);
  padding: 0.65rem 1.2rem;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-icon {
  stroke-width: 2;
  color: currentColor;
}

.copy-btn:hover {
  background: transparent;
  color: var(--ink-primary);
}

.copy-btn:hover {
  background: transparent;
  color: var(--ink-primary);
}

.copy-feedback {
  margin-top: 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  height: 1rem;
}

/* Site Footer */
.site-footer {
  padding: 3rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--ink-muted);
}

.footer-left {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.footer-title {
  letter-spacing: 0.1em;
  color: var(--ink-primary);
  font-weight: 500;
  font-size: 0.75rem;
}

.footer-brand-note {
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

/* Responsive Adjustments */
@media (max-width: 820px) {
  .statement-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .channel-row {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .channel-note {
    grid-column: 1 / -1;
    order: 3;
    font-size: 0.8rem;
  }

  .inquiry-box {
    padding: 2.5rem 1.5rem;
  }

  .email-wrapper {
    flex-direction: column;
    width: 100%;
    padding: 1.2rem;
    gap: 1rem;
  }

  .copy-btn {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}

@media (max-width: 520px) {
  .page-container {
    padding: 0 1.25rem;
  }

  .header-meta {
    display: none;
  }

  .hero-section {
    padding: 4.5rem 0 3.5rem;
  }

  .statement-section,
  .channels-section,
  .inquiry-section {
    padding: 3.5rem 0;
  }
}