/* ============================================================
   静态信息页共享样式（/about、/guidelines）
   复刻站点视觉，供百度等搜索引擎抓取真实内容；无 JS 依赖。
   ============================================================ */

:root {
  --color-primary: #067B7B;
  --color-primary-dark: #055e5e;
  --color-primary-rgb: 6, 123, 123;
  --color-text-primary: #333;
  --color-text-secondary: #666;
  --color-text-light: #999;
  --color-text-dark: #1a1a2e;
  --color-border: #e5e5e5;
  --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-family-en: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --container-max-width: 1200px;
}

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

html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; scroll-behavior: smooth; }

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: #fff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a { color: var(--color-primary); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

.container { width: 100%; max-width: var(--container-max-width); margin: 0 auto; padding: 0 24px; }

/* ==================== 页头 ==================== */
.app-header { background: #067B7B; box-shadow: 0 2px 8px rgba(0, 0, 0, .15); }
.header-container {
  max-width: 1200px; margin: 0 auto; padding: 8px 16px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px; min-height: 70px;
}
.header-logo a { display: flex; align-items: center; text-decoration: none; }
.logo-img { height: 42px; width: auto; object-fit: contain; }
.header-nav { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.nav-link {
  padding: 8px 16px; font-size: 15px; color: rgba(255, 255, 255, .85);
  text-decoration: none; border-radius: 4px; transition: all .2s ease;
}
.nav-link:hover { color: #fff; background: rgba(255, 255, 255, .15); }
.nav-link.active { color: #fff; background: rgba(255, 255, 255, .2); font-weight: 600; }

/* ==================== 主内容 ==================== */
.main-content { flex: 1 0 auto; }

/* 桌面端页头吸顶：与 SPA 保持一致（AppHeader.vue 用 position:fixed，
   App.vue 给 .main-content 补 padding-top:70px 占位）。
   移动端(≤768px)导航换行、页头实际高度大于 70px，保持文档流内静态定位，避免遮挡正文。 */
@media (min-width: 769px) {
  .app-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; }
  .main-content { padding-top: 70px; }
}

.page-header {
  text-align: center; padding: 48px 0; color: #fff; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #067B7B 0%, #055e5e 100%);
}
.page-header::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; opacity: .5;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.page-header h1 { font-size: 32px; font-weight: 700; margin-bottom: 8px; position: relative; }
.page-header p { font-size: 16px; opacity: .9; position: relative; }

.page-content { padding: 48px 0; }

/* 分区通用 */
.section { margin-bottom: 60px; }
.section:last-child { margin-bottom: 0; }
.section-title {
  font-size: 22px; font-weight: 700; color: var(--color-text-dark);
  margin-bottom: 24px; padding-bottom: 12px; border-bottom: 2px solid #067B7B; display: inline-block;
}
.section-content { font-size: 15px; line-height: 1.8; color: var(--color-text-secondary); }
.section-content p { margin-bottom: 16px; }
.section-content p:last-child { margin-bottom: 0; }

/* ==================== 关于我们 ==================== */
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.info-item { background: #f8fafc; padding: 20px; border-radius: 8px; }
.info-label { display: block; font-size: 13px; color: var(--color-text-light); margin-bottom: 8px; }
.info-value { font-size: 15px; font-weight: 600; color: var(--color-text-primary); }

.scope-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.scope-item { background: #f8fafc; padding: 24px; border-radius: 8px; border-left: 4px solid #067B7B; }
.scope-item h3 { font-size: 16px; font-weight: 600; color: var(--color-text-primary); margin-bottom: 12px; }
.scope-item p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; margin: 0; }

.columns-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
.column-item {
  background: #f8fafc; padding: 28px 20px; border-radius: 12px; text-align: center;
  transition: all .3s ease; border: 1px solid var(--color-border);
}
.column-item:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(var(--color-primary-rgb), .15); border-color: #067B7B; }
.column-icon {
  width: 56px; height: 56px; border-radius: 12px; margin: 0 auto 16px;
  background: linear-gradient(135deg, #067B7B 0%, #055e5e 100%);
  display: flex; align-items: center; justify-content: center; color: #fff;
}
.column-item h3 { font-size: 15px; font-weight: 600; color: var(--color-text-primary); margin-bottom: 8px; }
.column-item p { font-size: 13px; color: var(--color-text-secondary); line-height: 1.5; margin: 0; }

.contact-info { display: flex; flex-direction: column; gap: 16px; }
.contact-info .contact-item { display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--color-text-secondary); }
.contact-info .contact-item svg { color: #067B7B; flex-shrink: 0; }

/* ==================== 投稿指南 ==================== */
.requirements-list { display: flex; flex-direction: column; gap: 24px; }
.requirement-item { background: #f8fafc; padding: 24px; border-radius: 8px; }
.requirement-item h3 { font-size: 16px; font-weight: 600; color: var(--color-text-primary); margin-bottom: 16px; }
.requirement-item li {
  font-size: 14px; color: var(--color-text-secondary); line-height: 1.8;
  padding-left: 20px; position: relative; margin-bottom: 8px;
}
.requirement-item li::before { content: '•'; position: absolute; left: 0; color: #067B7B; font-weight: bold; }

.format-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.format-item { background: #f8fafc; padding: 24px; border-radius: 8px; border-left: 4px solid #067B7B; transition: all .3s ease; }
.format-item:hover { box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), .1); transform: translateY(-2px); }
.format-item h3 { font-size: 15px; font-weight: 600; color: var(--color-text-primary); margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.format-item h3::before { content: ''; width: 4px; height: 16px; background: #067B7B; border-radius: 2px; }
.format-item p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; margin: 0; }

.process-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step { display: flex; gap: 16px; background: #f8fafc; padding: 20px; border-radius: 8px; }
.step-number {
  width: 36px; height: 36px; background: #067B7B; color: #fff; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 700; flex-shrink: 0;
}
.step-content h3 { font-size: 15px; font-weight: 600; color: var(--color-text-primary); margin-bottom: 6px; }
.step-content p { font-size: 13px; color: var(--color-text-light); margin: 0; line-height: 1.5; }

.handling-info { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.handling-item { background: #f8fafc; padding: 24px; border-radius: 8px; }
.handling-item h3 { font-size: 15px; font-weight: 600; color: var(--color-text-primary); margin-bottom: 8px; }
.handling-item p { font-size: 14px; color: var(--color-text-secondary); margin: 0; line-height: 1.6; }

.contact-card { background: #f8fafc; padding: 32px; border-radius: 8px; }
.contact-intro { font-size: 15px; color: var(--color-text-secondary); margin-bottom: 24px; }
.contact-details { display: flex; flex-direction: column; gap: 16px; }
.contact-details .contact-item { display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--color-text-primary); }
.contact-label { font-weight: 600; color: var(--color-text-secondary); min-width: 50px; }

/* ==================== 页脚 ==================== */
.app-footer { background: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%); color: #fff; padding: 56px 0 0; margin-top: auto; }
.footer-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.footer-main { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.5fr; gap: 40px; padding-bottom: 40px; }
.footer-section { min-width: 0; }
.footer-logo { margin-bottom: 16px; }
.footer-title { font-size: 20px; font-weight: 700; margin-bottom: 4px; color: #fff; letter-spacing: 1px; }
.footer-issn { font-size: 12px; color: rgba(255, 255, 255, .5); font-family: var(--font-family-en); }
.footer-desc { font-size: 14px; color: rgba(255, 255, 255, .7); line-height: 1.7; }
.footer-subtitle { font-size: 15px; font-weight: 600; margin-bottom: 18px; color: #fff; position: relative; padding-bottom: 10px; }
.footer-subtitle::after { content: ''; position: absolute; left: 0; bottom: 0; width: 24px; height: 2px; background: var(--color-primary); border-radius: 1px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255, 255, 255, .7); text-decoration: none; font-size: 14px; transition: all .2s ease; display: inline-flex; align-items: center; }
.footer-links a:hover { color: #fff; padding-left: 8px; }
.footer-contact li { font-size: 14px; color: rgba(255, 255, 255, .7); margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.contact-icon { display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; background: rgba(255, 255, 255, .1); border-radius: 6px; color: var(--color-primary); }
.footer-divider { height: 1px; background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .15), transparent); }
.footer-bottom { padding: 28px 0; text-align: center; }
.copyright { font-size: 14px; color: rgba(255, 255, 255, .9); margin-bottom: 12px; font-weight: 500; }
.legal-info-group { display: flex; justify-content: center; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.legal-item { font-size: 12px; color: rgba(255, 255, 255, .5); }
.legal-separator { font-size: 12px; color: rgba(255, 255, 255, .3); }
.icp-link { text-decoration: none; transition: color .2s ease; }
.icp-link:hover { color: rgba(255, 255, 255, .85); }
.gongan-link { display: inline-flex; align-items: center; gap: 6px; }
.gongan-logo { width: 16px; height: 16px; object-fit: contain; vertical-align: middle; }

/* ==================== 响应式 ==================== */
@media (max-width: 992px) {
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-info { grid-column: span 2; }
  .columns-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .header-container { justify-content: center; text-align: center; }
  .header-nav { justify-content: center; }
  .page-header { padding: 32px 0; }
  .page-header h1 { font-size: 24px; }
  .page-content { padding: 32px 0; }
  .section { margin-bottom: 40px; }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
  .scope-list { grid-template-columns: 1fr; }
  .columns-grid { grid-template-columns: repeat(2, 1fr); }
  .format-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .handling-info { grid-template-columns: 1fr; }
}

@media (max-width: 576px) {
  .footer-main { grid-template-columns: 1fr; gap: 28px; }
  .footer-info { grid-column: span 1; text-align: center; }
  .footer-subtitle::after { left: 50%; transform: translateX(-50%); }
  .footer-links { text-align: center; }
  .footer-contact li { justify-content: center; }
  .legal-info-group { flex-direction: column; gap: 4px; }
  .legal-separator { display: none; }
}

@media (max-width: 480px) {
  .info-grid { grid-template-columns: 1fr; }
  .columns-grid { grid-template-columns: 1fr; }
  .format-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .nav-link { padding: 6px 10px; font-size: 14px; }
}