/* ============================================================
   龙发里程碑 - 发展历程
   Aesthetic: 工业精致 · 东方印章 · 阶梯叙事
   ============================================================ */

:root {
  --ml-primary: #0c4a8a;
  --ml-primary-2: #1e6fbf;
  --ml-accent: #c8102e;
  --ml-accent-soft: #f4d7d9;
  --ml-gold: #c79a4b;
  --ml-ink: #1a2b3c;
  --ml-paper: #fbfbf8;
  --ml-paper-2: #f4f1e8;
  --ml-line: #d8d2c2;
  --ml-shadow: 0 10px 40px -10px rgba(12, 74, 138, 0.18), 0 2px 6px rgba(0, 0, 0, 0.04);
}

/* ===== Banner 文字层 ===== */
.milestone-banner-text {
  text-align: center;
  margin-left: 92px;
  color: white;
  font-family: 'Microsoft YaHei', '微软雅黑', sans-serif;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}
.milestone-banner-text .mb-line1 {
  font-size: 42px;
  font-weight: 600;
  line-height: 1;
  padding: 10px 0;
  letter-spacing: 2px;
}
.milestone-banner-text .mb-line2 {
  font-size: 33px;
  font-weight: 600;
  line-height: 1;
  padding: 10px 0;
  letter-spacing: 8px;
  padding-left: 8px;
}
.milestone-banner-text .mb-line3 {
  font-size: 27px;
  font-weight: 600;
  line-height: 1;
  margin: 24px 0 0 -275px;
  opacity: 0.92;
  letter-spacing: 4px;
}

/* ===== 主容器 ===== */
.milestone-wrap {
  padding: 0 !important;
  overflow: hidden;
  background: linear-gradient(180deg, #ffffff 0%, #fbfbf8 100%);
  position: relative;
}
.milestone-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(12, 74, 138, 0.04) 1px, transparent 0);
  background-size: 22px 22px;
  pointer-events: none;
  opacity: 0.7;
}

/* ===== 顶部章节标头 ===== */
.milestone-header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 28px 36px 18px;
  position: relative;
}
.milestone-header-decor {
  width: 6px;
  height: 38px;
  background: linear-gradient(180deg, var(--ml-primary) 0%, var(--ml-accent) 100%);
  border-radius: 2px;
  box-shadow: 0 0 0 2px rgba(12, 74, 138, 0.06);
}
.milestone-header-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mht-cn {
  font-size: 22px;
  font-weight: 700;
  color: var(--ml-ink);
  letter-spacing: 4px;
  font-family: 'Microsoft YaHei', '微软雅黑', sans-serif;
}
.mht-en {
  font-size: 11px;
  font-weight: 500;
  color: var(--ml-primary-2);
  letter-spacing: 3px;
  text-transform: uppercase;
}

/* ===== 数据条 ===== */
.milestone-meta {
  margin: 0 36px 22px;
  padding: 18px 24px;
  background: linear-gradient(135deg, #f7f9fc 0%, #eef4fb 100%);
  border: 1px solid #e3ecf5;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}
.milestone-meta::after {
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 3px; height: 100%;
  background: linear-gradient(180deg, var(--ml-primary) 0%, transparent 100%);
}
.mm-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}
.mm-num {
  font-family: 'Menlo', 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 28px;
  font-weight: 700;
  color: var(--ml-primary);
  line-height: 1;
  letter-spacing: -0.5px;
  background: linear-gradient(180deg, var(--ml-primary) 0%, var(--ml-primary-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.mm-label {
  font-size: 12px;
  color: #6b7c8d;
  letter-spacing: 1px;
}
.mm-divider {
  width: 1px;
  height: 32px;
  background: linear-gradient(180deg, transparent 0%, #c5d4e3 50%, transparent 100%);
}

/* ===== 图片卡 ===== */
.milestone-card {
  position: relative;
  margin: 0 36px;
  padding: 14px;
  background: #fff;
  border: 1px solid #e3ecf5;
  border-radius: 6px;
  box-shadow: var(--ml-shadow);
  cursor: zoom-in;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.4s ease;
  opacity: 0;
  transform: translateY(20px);
  animation: cardReveal 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) 0.2s forwards;
}
.milestone-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 50px -10px rgba(12, 74, 138, 0.28), 0 4px 12px rgba(0, 0, 0, 0.06);
}

.milestone-card-glow {
  position: absolute;
  inset: -2px;
  border-radius: 8px;
  background: linear-gradient(120deg,
    rgba(12, 74, 138, 0) 0%,
    rgba(12, 74, 138, 0.08) 30%,
    rgba(200, 16, 46, 0.12) 50%,
    rgba(12, 74, 138, 0.08) 70%,
    rgba(12, 74, 138, 0) 100%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.6s ease;
}
.milestone-card:hover .milestone-card-glow {
  opacity: 1;
  animation: shimmer 2.4s linear infinite;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.milestone-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
  user-select: none;
  -webkit-user-drag: none;
}

/* 四角装饰 */
.milestone-corner {
  position: absolute;
  width: 22px;
  height: 22px;
  border-color: var(--ml-primary);
  pointer-events: none;
  opacity: 0.85;
}
.milestone-corner.tl { top: 6px; left: 6px; border-top: 2px solid; border-left: 2px solid; }
.milestone-corner.tr { top: 6px; right: 6px; border-top: 2px solid; border-right: 2px solid; }
.milestone-corner.bl { bottom: 6px; left: 6px; border-bottom: 2px solid; border-left: 2px solid; }
.milestone-corner.br { bottom: 6px; right: 6px; border-bottom: 2px solid; border-right: 2px solid; }

.milestone-zoom-hint {
  position: absolute;
  bottom: 28px;
  right: 28px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(12, 74, 138, 0.9);
  color: #fff;
  font-size: 12px;
  border-radius: 999px;
  letter-spacing: 1px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  backdrop-filter: blur(4px);
}
.milestone-card:hover .milestone-zoom-hint {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 底部说明 ===== */
.milestone-caption {
  margin: 28px 36px 22px;
  padding: 18px 22px 18px 26px;
  position: relative;
  background: linear-gradient(90deg, rgba(12, 74, 138, 0.04) 0%, rgba(12, 74, 138, 0) 100%);
  border-left: 3px solid var(--ml-primary);
  border-radius: 0 4px 4px 0;
}
.milestone-caption::before {
  content: '“';
  position: absolute;
  left: 8px;
  top: -8px;
  font-family: 'Georgia', serif;
  font-size: 42px;
  color: var(--ml-primary);
  opacity: 0.18;
  line-height: 1;
}
.milestone-caption p {
  font-size: 14px;
  line-height: 1.85;
  color: #4a5b6e;
  letter-spacing: 0.5px;
}
.mc-strong {
  color: var(--ml-ink);
  font-weight: 700;
  position: relative;
}

/* ===== 关键节点横条 ===== */
.milestone-quote-row {
  margin: 0 36px 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.mqr-item {
  padding: 14px 12px;
  background: #fff;
  border: 1px solid #e3ecf5;
  border-radius: 6px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}
.mqr-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--ml-primary) 50%, transparent 100%);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.4s ease;
}
.mqr-item:hover {
  border-color: var(--ml-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px -6px rgba(12, 74, 138, 0.2);
}
.mqr-item:hover::before {
  transform: scaleX(1);
}
.mqr-year {
  font-family: 'Menlo', 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 24px;
  font-weight: 700;
  color: var(--ml-accent);
  letter-spacing: 0;
  line-height: 1;
}
.mqr-text {
  margin-top: 6px;
  font-size: 12px;
  color: #4a5b6e;
  letter-spacing: 0.5px;
}

/* ===== 动画 ===== */
@keyframes cardReveal {
  0%   { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ===== Lightbox ===== */
.milestone-lightbox {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}
.milestone-lightbox.open {
  display: flex;
  animation: lbFade 0.35s ease forwards;
}
@keyframes lbFade {
  from { opacity: 0; }
  to { opacity: 1; }
}
.mlb-mask {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(8, 16, 28, 0.92) 0%, rgba(2, 6, 14, 0.97) 100%);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.mlb-toolbar {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  color: #fff;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.4) 0%, transparent 100%);
}
.mlb-title {
  font-size: 15px;
  letter-spacing: 4px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.92);
}
.mlb-close {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
}
.mlb-close:hover {
  background: var(--ml-accent);
  border-color: var(--ml-accent);
  transform: rotate(90deg);
}

.mlb-stage {
  position: relative;
  z-index: 2;
  flex: 1;
  width: 100%;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 40px 60px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
}
.mlb-stage::-webkit-scrollbar { width: 8px; height: 8px; }
.mlb-stage::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.25);
  border-radius: 4px;
}
.mlb-stage::-webkit-scrollbar-track { background: transparent; }

.mlb-img {
  max-width: 100%;
  height: auto;
  display: block;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
  border-radius: 4px;
  transform-origin: center center;
  transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  cursor: zoom-in;
}
.mlb-img.zoomed { cursor: zoom-out; }

.mlb-hint {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  letter-spacing: 1.5px;
  pointer-events: none;
  backdrop-filter: blur(6px);
}

/* ===== 响应式 ===== */
@media (max-width: 1280px) {
  .milestone-meta { padding: 14px 16px; }
  .mm-num { font-size: 24px; }
  .milestone-quote-row { grid-template-columns: repeat(2, 1fr); }
}