/* =========================================================
   Fey Design System — Deep-space observatory aesthetic
   基于用户提供的 Fey 风格参考重写
   ========================================================= */

:root {
  /* === Colors === */
  --color-midnight-ink: #0b0b0b;
  --color-obsidian-deep: #131313;
  --color-coal-dust: #191919;
  --color-slate-text: #868f97;
  --color-ash-gray: #999999;
  --color-silver-accents: #cccccc;
  --color-light-smoke: #e6e6e6;
  --color-pure-white: #ffffff;
  --color-cosmic-blue: #479ffa;
  --color-solar-flare: #ffa16c;
  --color-emerald-profit: #4ebe96;

  /* === Typography === */
  --font-calibre: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;

  --text-caption: 10px;
  --leading-caption: 1.5;
  --text-body: 14px;
  --leading-body: 1.36;
  --text-heading-sm: 18px;
  --leading-heading-sm: 1.25;
  --text-heading: 24px;
  --leading-heading: 1.2;
  --tracking-heading: -0.053px;
  --text-heading-lg: 26px;
  --leading-heading-lg: 1.1;
  --tracking-heading-lg: -0.053px;
  --text-display: 48px;
  --leading-display: 1;
  --tracking-display: -0.08px;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* === Spacing === */
  --spacing-4: 4px;
  --spacing-6: 6px;
  --spacing-8: 8px;
  --spacing-10: 10px;
  --spacing-14: 14px;
  --spacing-15: 15px;
  --spacing-18: 18px;
  --spacing-20: 20px;
  --spacing-21: 21px;
  --spacing-24: 24px;
  --spacing-28: 28px;
  --spacing-32: 32px;
  --spacing-40: 40px;
  --spacing-42: 42px;
  --spacing-103: 103px;
  --spacing-190: 190px;

  /* === Layout === */
  --page-max-width: 1220px;

  /* === Border Radius === */
  --radius-cards: 16px;
  --radius-general: 10px;
  --radius-input-sm: 6px;
  --radius-buttons-pill: 99px;
  --radius-buttons-square: 6px;

  /* === Shadows === */
  --shadow-xl: rgba(0, 0, 0, 0.8) 0px 0px 44px 0px;
  --shadow-subtle: rgba(0, 0, 0, 0.85) 0px 1px 0px 0px;

  /* === Transitions === */
  --transition-fast: all 0.15s ease;
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================================
   Base Reset
   ========================================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-calibre);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-pure-white);
  background: var(--color-midnight-ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* =========================================================
   Scrollbar
   ========================================================= */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-midnight-ink);
}
::-webkit-scrollbar-thumb {
  background: var(--color-coal-dust);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-slate-text);
}
::selection {
  background: var(--color-cosmic-blue);
  color: var(--color-midnight-ink);
}

/* =========================================================
   Header / Navigation
   ========================================================= */
#banner {
  display: none !important;
}

#header {
  background: rgba(11, 11, 11, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-coal-dust);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0;
}

#header-outer {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-24);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

#header-title {
  flex-shrink: 0;
}

#logo {
  font-size: 16px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-pure-white);
  text-decoration: none;
  letter-spacing: -0.02em;
}

#logo:hover {
  color: var(--color-cosmic-blue);
  transition: var(--transition-fast);
}

#subtitle-wrap {
  display: none !important;
}

/* Navigation */
#main-nav {
  display: flex;
  gap: var(--spacing-32);
  margin-top: 0;
}

.main-nav-link {
  color: var(--color-slate-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: var(--font-weight-regular);
  transition: var(--transition-fast);
  position: relative;
  padding: var(--spacing-8) 0;
}

.main-nav-link:hover {
  color: var(--color-pure-white);
}

/* Hide default landscape elements */
#sub-nav,
#search-form-wrap,
#main-nav-toggle,
.nav-icon,
.nav-search-btn {
  display: none !important;
}

/* =========================================================
   Layout Containers
   ========================================================= */
#wrap {
  padding-top: 64px;
}

.outer {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-24);
}

/* =========================================================
   Hero Section
   ========================================================= */
.hero-custom {
  padding: 120px 0 80px;
  background: var(--color-midnight-ink);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-coal-dust);
}

.hero-custom::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(71, 159, 250, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: var(--spacing-42);
  position: relative;
  z-index: 1;
}

.hero-avatar {
  flex-shrink: 0;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-cosmic-blue), var(--color-solar-flare));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: var(--font-weight-bold);
  color: var(--color-pure-white);
  box-shadow: 0 0 60px rgba(71, 159, 250, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.1);
}

.hero-content {
  flex: 1;
}

.hero-name {
  font-size: var(--text-display);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
  margin-bottom: var(--spacing-14);
  color: var(--color-pure-white);
}

.hero-tagline {
  font-size: var(--text-heading-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-slate-text);
  margin-bottom: var(--spacing-18);
}

.hero-bio {
  font-size: var(--text-body);
  color: var(--color-ash-gray);
  line-height: var(--leading-body);
  max-width: 560px;
}

.hero-bio a {
  color: var(--color-cosmic-blue);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: var(--transition-fast);
}

.hero-bio a:hover {
  color: var(--color-solar-flare);
}

/* =========================================================
   Products Section
   ========================================================= */
.products-section {
  padding: var(--spacing-103) 0;
  background: var(--color-obsidian-deep);
  border-top: 1px solid var(--color-coal-dust);
  border-bottom: 1px solid var(--color-coal-dust);
}

.section-title {
  font-size: var(--text-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin-bottom: var(--spacing-42);
  color: var(--color-pure-white);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-20);
}

.product-card {
  background: var(--color-midnight-ink);
  border: 1px solid var(--color-coal-dust);
  border-radius: var(--radius-cards);
  padding: var(--spacing-24);
  transition: var(--transition-base);
  text-decoration: none;
  display: block;
  box-shadow: var(--shadow-xl);
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(71, 159, 250, 0.3);
  box-shadow: 0 0 60px rgba(71, 159, 250, 0.15), var(--shadow-xl);
}

.product-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-general);
  background: linear-gradient(135deg, var(--color-cosmic-blue), var(--color-solar-flare));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: var(--spacing-18);
}

.product-title {
  font-size: 16px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-pure-white);
  margin-bottom: var(--spacing-8);
}

.product-desc {
  font-size: var(--text-body);
  color: var(--color-slate-text);
  line-height: var(--leading-body);
}

.product-tag {
  display: inline-block;
  margin-top: var(--spacing-14);
  padding: var(--spacing-4) var(--spacing-10);
  background: transparent;
  border: 1px solid var(--color-solar-flare);
  color: var(--color-solar-flare);
  font-size: 12px;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-buttons-pill);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* =========================================================
   Posts / Articles Section
   ========================================================= */
#main {
  width: 100%;
  padding: var(--spacing-103) 0;
}

.article {
  margin-bottom: var(--spacing-20);
  padding: var(--spacing-24);
  background: var(--color-obsidian-deep);
  border: 1px solid var(--color-coal-dust);
  border-radius: var(--radius-cards);
  transition: var(--transition-base);
  box-shadow: var(--shadow-xl);
}

.article:hover {
  border-color: rgba(71, 159, 250, 0.2);
}

.article:last-child {
  border-bottom: 1px solid var(--color-coal-dust);
}

.article-date {
  color: var(--color-cosmic-blue);
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-10);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-category-link {
  color: var(--color-slate-text);
  text-decoration: none;
  font-size: 12px;
  margin-left: var(--spacing-10);
}

.article-title {
  font-size: var(--text-heading-sm);
  font-weight: var(--font-weight-semibold);
  line-height: var(--leading-heading-sm);
  margin-bottom: var(--spacing-14);
}

.article-title a {
  color: var(--color-pure-white);
  text-decoration: none;
  transition: var(--transition-fast);
}

.article:hover .article-title a {
  color: var(--color-cosmic-blue);
}

.article-entry {
  color: var(--color-slate-text);
  line-height: var(--leading-body);
  font-size: var(--text-body);
}

.article-entry p {
  margin-bottom: var(--spacing-14);
}

/* Hide article extras */
.article-tag,
.article-share,
.article-comment {
  display: none !important;
}

/* View all link */
.view-all-posts {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-8);
  margin-top: var(--spacing-40);
  color: var(--color-cosmic-blue);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  font-size: var(--text-body);
  transition: var(--transition-fast);
}

.view-all-posts:hover {
  color: var(--color-solar-flare);
  gap: 12px;
}

/* =========================================================
   Pagination
   ========================================================= */
#page-nav {
  text-align: center;
  margin-top: var(--spacing-40);
  padding-top: var(--spacing-24);
  border-top: 1px solid var(--color-coal-dust);
}

#page-nav a,
#page-nav span {
  display: inline-block;
  padding: var(--spacing-8) var(--spacing-14);
  margin: 0 var(--spacing-4);
  color: var(--color-slate-text);
  text-decoration: none;
  border-radius: var(--radius-buttons-square);
  border: 1px solid var(--color-coal-dust);
  font-size: var(--text-body);
  transition: var(--transition-fast);
}

#page-nav a:hover {
  background: var(--color-obsidian-deep);
  border-color: var(--color-cosmic-blue);
  color: var(--color-cosmic-blue);
}

#page-nav .current {
  background: var(--color-cosmic-blue);
  color: var(--color-midnight-ink);
  border-color: var(--color-cosmic-blue);
  font-weight: var(--font-weight-semibold);
}

/* =========================================================
   Article Detail Page
   ========================================================= */
.article-header {
  margin-bottom: var(--spacing-40);
  padding-bottom: var(--spacing-24);
  border-bottom: 1px solid var(--color-coal-dust);
}

.article-header .article-title {
  font-size: var(--text-heading-lg);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-heading-lg);
  letter-spacing: var(--tracking-heading-lg);
  margin-bottom: var(--spacing-18);
}

.article-meta {
  color: var(--color-slate-text);
  font-size: var(--text-body);
}

.article-entry h2 {
  font-size: var(--text-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: var(--spacing-42) 0 var(--spacing-18);
  color: var(--color-pure-white);
  padding-bottom: var(--spacing-14);
  border-bottom: 1px solid var(--color-coal-dust);
}

.article-entry h3 {
  font-size: var(--text-heading-sm);
  font-weight: var(--font-weight-semibold);
  line-height: var(--leading-heading-sm);
  margin: var(--spacing-32) 0 var(--spacing-14);
  color: var(--color-pure-white);
}

.article-entry p {
  margin-bottom: var(--spacing-18);
  color: var(--color-slate-text);
}

.article-entry a {
  color: var(--color-cosmic-blue);
  text-decoration: none;
  transition: var(--transition-fast);
}

.article-entry a:hover {
  color: var(--color-solar-flare);
}

.article-entry blockquote {
  border-left: 3px solid var(--color-solar-flare);
  padding-left: var(--spacing-20);
  margin: var(--spacing-24) 0;
  color: var(--color-ash-gray);
  font-style: italic;
}

.article-entry ul,
.article-entry ol {
  margin: var(--spacing-18) 0;
  padding-left: 1.5em;
  color: var(--color-slate-text);
}

.article-entry li {
  margin: var(--spacing-8) 0;
}

.article-entry code {
  background: var(--color-obsidian-deep);
  padding: 2px var(--spacing-8);
  border-radius: var(--radius-input-sm);
  font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
  font-size: 0.9em;
  color: var(--color-cosmic-blue);
}

.article-entry pre {
  background: var(--color-obsidian-deep);
  padding: var(--spacing-20);
  border-radius: var(--radius-cards);
  overflow-x: auto;
  margin-bottom: var(--spacing-20);
  border: 1px solid var(--color-coal-dust);
}

.article-entry pre code {
  background: none;
  padding: 0;
  color: var(--color-slate-text);
}

.article-entry table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-20) 0;
  color: var(--color-slate-text);
}

.article-entry th,
.article-entry td {
  border: 1px solid var(--color-coal-dust);
  padding: var(--spacing-14);
  text-align: left;
}

.article-entry th {
  background: var(--color-obsidian-deep);
  color: var(--color-pure-white);
  font-weight: var(--font-weight-semibold);
}

/* =========================================================
   Sidebar (hidden)
   ========================================================= */
#sidebar {
  display: none !important;
}

/* =========================================================
   Archives Page
   ========================================================= */
.archives-wrap {
  margin-bottom: var(--spacing-40);
  padding: var(--spacing-24);
  background: var(--color-obsidian-deep);
  border: 1px solid var(--color-coal-dust);
  border-radius: var(--radius-cards);
  box-shadow: var(--shadow-xl);
}

.archive-year-wrap {
  font-size: var(--text-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin-bottom: var(--spacing-24);
  color: var(--color-pure-white);
  padding-bottom: var(--spacing-14);
  border-bottom: 1px solid var(--color-coal-dust);
}

.archive-article {
  margin-bottom: var(--spacing-18);
  padding-left: 0;
  display: flex;
  align-items: baseline;
  gap: var(--spacing-18);
}

.archive-article-date {
  color: var(--color-cosmic-blue);
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  flex-shrink: 0;
  width: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.archive-article-title {
  color: var(--color-pure-white);
  text-decoration: none;
  font-size: var(--text-body);
  font-weight: var(--font-weight-medium);
  transition: var(--transition-fast);
}

.archive-article-title:hover {
  color: var(--color-cosmic-blue);
}

/* =========================================================
   Tags & Categories
   ========================================================= */
.tag-cloud {
  text-align: center;
  padding: var(--spacing-40) var(--spacing-24);
  background: var(--color-obsidian-deep);
  border: 1px solid var(--color-coal-dust);
  border-radius: var(--radius-cards);
  box-shadow: var(--shadow-xl);
}

.tag-cloud a {
  display: inline-block;
  padding: var(--spacing-6) var(--spacing-14);
  margin: var(--spacing-6);
  background: var(--color-midnight-ink);
  color: var(--color-slate-text);
  text-decoration: none;
  border-radius: var(--radius-buttons-pill);
  font-size: var(--text-body);
  border: 1px solid var(--color-coal-dust);
  transition: var(--transition-fast);
}

.tag-cloud a:hover {
  background: var(--color-cosmic-blue);
  color: var(--color-midnight-ink);
  border-color: var(--color-cosmic-blue);
}

.category-list {
  list-style: none;
  padding: 0;
  background: var(--color-obsidian-deep);
  border: 1px solid var(--color-coal-dust);
  border-radius: var(--radius-cards);
  padding: var(--spacing-24);
  box-shadow: var(--shadow-xl);
}

.category-list-item {
  padding: var(--spacing-12) 0;
  border-bottom: 1px solid var(--color-coal-dust);
}

.category-list-item:last-child {
  border-bottom: none;
}

.category-list-link {
  color: var(--color-pure-white);
  text-decoration: none;
  font-size: var(--text-body);
  font-weight: var(--font-weight-medium);
  transition: var(--transition-fast);
}

.category-list-link:hover {
  color: var(--color-cosmic-blue);
}

.category-list-count {
  color: var(--color-slate-text);
  font-size: 12px;
  margin-left: var(--spacing-8);
}

/* =========================================================
   Page Content (About, Products)
   ========================================================= */
.page-content h2 {
  font-size: var(--text-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: var(--spacing-42) 0 var(--spacing-18);
  color: var(--color-pure-white);
  padding-bottom: var(--spacing-14);
  border-bottom: 1px solid var(--color-coal-dust);
}

.page-content p {
  color: var(--color-slate-text);
  margin-bottom: var(--spacing-18);
  line-height: var(--leading-body);
}

.page-content ul {
  padding-left: 1.5em;
  margin-bottom: var(--spacing-18);
  color: var(--color-slate-text);
}

.page-content li {
  margin-bottom: var(--spacing-10);
  line-height: var(--leading-body);
}

.page-content strong {
  color: var(--color-pure-white);
  font-weight: var(--font-weight-semibold);
}

.page-content a {
  color: var(--color-cosmic-blue);
  text-decoration: none;
  transition: var(--transition-fast);
}

.page-content a:hover {
  color: var(--color-solar-flare);
}

/* =========================================================
   Timeline (About page)
   ========================================================= */
.timeline {
  position: relative;
  padding-left: var(--spacing-28);
  margin: var(--spacing-24) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: var(--spacing-8);
  bottom: var(--spacing-8);
  width: 2px;
  background: linear-gradient(180deg, var(--color-cosmic-blue), var(--color-solar-flare));
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-32);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -33px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-cosmic-blue);
  border: 3px solid var(--color-midnight-ink);
  box-shadow: 0 0 0 3px rgba(71, 159, 250, 0.15);
}

.timeline-period {
  font-size: 12px;
  color: var(--color-cosmic-blue);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline-title {
  font-size: 16px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-pure-white);
  margin-bottom: var(--spacing-4);
}

.timeline-company {
  font-size: var(--text-body);
  color: var(--color-slate-text);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-8);
}

.timeline-desc {
  font-size: var(--text-body);
  color: var(--color-ash-gray);
  line-height: var(--leading-body);
}

/* =========================================================
   Footer
   ========================================================= */
#footer {
  background: var(--color-midnight-ink);
  border-top: 1px solid var(--color-coal-dust);
  padding: var(--spacing-40) var(--spacing-24);
  text-align: center;
  color: var(--color-slate-text);
  font-size: 12px;
}

#footer a {
  color: var(--color-slate-text);
  text-decoration: none;
  transition: var(--transition-fast);
}

#footer a:hover {
  color: var(--color-cosmic-blue);
}

/* =========================================================
   Mobile Nav (hidden)
   ========================================================= */
#mobile-nav {
  display: none !important;
}

/* =========================================================
   Page type date hide
   ========================================================= */
.article-type-page .article-meta {
  display: none !important;
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 768px) {
  .hero-inner {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-24);
  }

  .hero-name {
    font-size: 32px;
  }

  .hero-bio {
    max-width: 100%;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  #header-outer {
    flex-wrap: wrap;
    height: auto;
    padding: var(--spacing-12) var(--spacing-20);
  }

  #main-nav {
    gap: var(--spacing-18);
    margin-top: var(--spacing-8);
    flex-wrap: wrap;
  }

  .outer {
    padding: 0 var(--spacing-16);
  }

  .article {
    padding: var(--spacing-16);
  }

  .archive-article {
    flex-direction: column;
    gap: var(--spacing-4);
  }

  .archive-article-date {
    width: auto;
  }

  .section-title {
    font-size: 20px;
  }
}