/* /home/www/www.diylco.com/css/style.css */
/* ===== 字体使用国内镜像 ===== */
@import url('https://fonts.loli.net/css2?family=Noto+Sans+SC:wght@300;400;500;700&family=Noto+Serif+SC:wght@400;700&display=swap');

/* ===== CSS Variables ===== */
:root {
  --primary: #1a73e8;
  --primary-dark: #1557b0;
  --accent: #ff6b35;
  --bg: #f8f9fa;
  --bg-card: #ffffff;
  --text: #1a1a2e;
  --text-light: #6c757d;
  --border: #e2e8f0;
  --shadow: 0 2px 16px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 32px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Noto Serif SC', Georgia, serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

/* ===== Header & Navigation ===== */
.site-header {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

.header-top {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-logo .logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
}

.site-logo h1 {
  font-size: 1.4rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 1px;
}

.site-logo .subtitle {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.6);
  font-weight: 300;
}

/* Navigation */
.main-nav {
  background: rgba(255,255,255,0.05);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.main-nav .nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 0;
}

.main-nav a {
  color: rgba(255,255,255,0.8);
  padding: 14px 24px;
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: #ffffff;
  background: rgba(255,255,255,0.08);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* ===== Hero Section ===== */
.hero {
  background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
  padding: 80px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(26,115,232,0.1) 0%, transparent 50%);
  animation: heroFloat 20s ease-in-out infinite;
}

@keyframes heroFloat {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -30px); }
}

.hero h2 {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* ===== Content Area ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 20px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 30px;
  position: relative;
  padding-left: 16px;
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: linear-gradient(to bottom, var(--primary), var(--accent));
  border-radius: 2px;
}

/* ===== Card Grid ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.card .card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 0;
}

.card .card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card .card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card .card-excerpt {
  font-size: 0.9rem;
  color: var(--text-light);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.card .card-meta {
  font-size: 0.8rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

/* ===== Article List Layout ===== */
.content-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
}

.article-list .article-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  gap: 20px;
}

.article-list .article-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateX(4px);
}

.article-item .article-thumb {
  width: 200px;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.article-item .article-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-item .article-info h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.article-item .article-info h3 a {
  color: var(--text);
}

.article-item .article-info h3 a:hover {
  color: var(--primary);
}

.article-item .article-excerpt {
  font-size: 0.9rem;
  color: var(--text-light);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-item .article-meta {
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--text-light);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Sidebar ===== */
.sidebar .widget {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}

.widget-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary);
}

/* Search Widget */
.search-box {
  display: flex;
  gap: 0;
}

.search-box input {
  flex: 1;
  padding: 10px 16px;
  border: 2px solid var(--border);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
  font-family: var(--font-sans);
}

.search-box input:focus {
  border-color: var(--primary);
}

.search-box button {
  padding: 10px 20px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
}

.search-box button:hover {
  background: var(--primary-dark);
}

/* Tags Widget */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud a {
  display: inline-block;
  padding: 6px 14px;
  background: var(--bg);
  border-radius: 20px;
  font-size: 0.82rem;
  color: var(--text-light);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.tag-cloud a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Hot Articles Widget */
.hot-articles .hot-item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.hot-articles .hot-item:last-child {
  border-bottom: none;
}

.hot-articles .hot-rank {
  width: 24px;
  height: 24px;
  background: var(--primary);
  color: #fff;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.hot-articles .hot-rank.top3 {
  background: var(--accent);
}

.hot-articles .hot-item a {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hot-articles .hot-item a:hover {
  color: var(--primary);
}

/* ===== Article Detail Page ===== */
.article-detail {
  max-width: 800px;
  margin: 0 auto;
}

.article-detail .article-header {
  margin-bottom: 32px;
}

.article-detail .article-header h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 16px;
}

.article-detail .article-meta-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-light);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.article-detail .article-content {
  font-size: 1.05rem;
  line-height: 2;
  color: #333;
}

.article-detail .article-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 32px 0 16px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
}

.article-detail .article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 24px 0 12px;
}

.article-detail .article-content p {
  margin-bottom: 16px;
  text-align: justify;
}

.article-detail .article-content img {
  margin: 24px auto;
  display: block;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.article-detail .article-content blockquote {
  margin: 20px 0;
  padding: 16px 24px;
  background: linear-gradient(135deg, #f0f4ff, #fff);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-light);
  font-style: italic;
}

.article-detail .article-content ul,
.article-detail .article-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.article-detail .article-content li {
  margin-bottom: 8px;
}

.article-detail .article-content pre {
  background: #1e1e2e;
  color: #cdd6f4;
  padding: 20px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin: 20px 0;
  font-size: 0.9rem;
  line-height: 1.6;
}

.article-detail .article-content code {
  background: rgba(26,115,232,0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--primary-dark);
}

.img-disclaimer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: -16px;
  margin-bottom: 24px;
}

/* Related Articles */
.related-articles {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 2px solid var(--border);
}

.related-articles h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.related-grid a {
  display: block;
  padding: 16px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.related-grid a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===== Tools Page ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 24px;
}

.tool-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.tool-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.tool-card h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 20px;
}

.tool-card .tool-area {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 20px;
}

.tool-card textarea,
.tool-card input[type="text"],
.tool-card input[type="number"],
.tool-card select {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  margin-bottom: 12px;
  outline: none;
  transition: var(--transition);
}

.tool-card textarea:focus,
.tool-card input:focus,
.tool-card select:focus {
  border-color: var(--primary);
}

.tool-card button {
  padding: 10px 24px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.tool-card button:hover {
  background: var(--primary-dark);
}

.tool-result {
  margin-top: 12px;
  padding: 12px;
  background: #fff;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  min-height: 40px;
  border: 1px solid var(--border);
}

/* ===== About Page ===== */
.about-section {
  max-width: 800px;
  margin: 0 auto;
}

.about-section .about-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.about-section .about-card h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: var(--primary);
}

.about-section .about-card p {
  margin-bottom: 12px;
  color: var(--text-light);
}

/* ===== Footer ===== */
.site-footer {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: rgba(255,255,255,0.7);
  margin-top: auto;
  padding: 40px 20px 20px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-col h4 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.footer-col p,
.footer-col a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  line-height: 2;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li a {
  display: block;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 20px;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
  color: var(--accent);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 20px;
  font-size: 0.85rem;
  color: var(--text-light);
}

.breadcrumb a {
  color: var(--text-light);
}

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

.breadcrumb span {
  margin: 0 8px;
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.pagination a,
.pagination span {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: var(--transition);
  border: 1px solid var(--border);
  color: var(--text);
}

.pagination a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.pagination .current {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .main-nav .nav-inner {
    display: none;
    flex-direction: column;
    padding: 8px 0;
  }

  .main-nav .nav-inner.active {
    display: flex;
  }

  .main-nav a {
    padding: 12px 20px;
    width: 100%;
  }

  .menu-toggle {
    display: block;
  }

  .hero h2 {
    font-size: 1.8rem;
  }

  .content-layout {
    grid-template-columns: 1fr;
  }

  .article-list .article-item {
    flex-direction: column;
  }

  .article-item .article-thumb {
    width: 100%;
    height: 200px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

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

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