/* ============================================================
   爱麻薯 · 产品路线图(roadmap.html)专用样式
   复用 style.css 的设计变量与基座(nav/footer/.container 等),
   本文件只覆盖:常驻深色玻璃 nav、暗 hero、时间轴、收尾带。
   ============================================================ */

/* ---------- 导航:本页无滚动双态 JS,常驻深色玻璃 ---------- */
.nav {
  background: rgba(10, 13, 20, .55);
  -webkit-backdrop-filter: blur(18px) saturate(1.6);
  backdrop-filter: blur(18px) saturate(1.6);
  box-shadow: inset 0 -1px 0 rgba(255, 255, 255, .08);
}
/* 当前页标识(纯文字,非链接) */
.rm-navlabel {
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--dark-ink);
  opacity: .82;
}

/* ---------- 暗 hero:蓝图网格 + 漂移辉光 + 大字渐变题 ---------- */
.rm-hero {
  position: relative;
  overflow: hidden;
  background: var(--bg-dark);
  color: var(--dark-ink);
  padding: 148px 0 96px;
}
/* 蓝图网格,向四周淡出 */
.rm-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 92% 84% at 50% 32%, #000 26%, transparent 74%);
  mask-image: radial-gradient(ellipse 92% 84% at 50% 32%, #000 26%, transparent 74%);
}
/* 品牌双辉光(同首页 hero 口径) */
.rm-hero::after {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(640px 380px at 16% 0%, rgba(32, 117, 242, .16), transparent 70%),
    radial-gradient(560px 380px at 86% 12%, rgba(253, 166, 29, .1), transparent 70%);
  pointer-events: none;
}
/* 漂移光球(克制,科技感) */
.rm-orb { position: absolute; border-radius: 50%; filter: blur(110px); pointer-events: none; }
.rm-orb--a { width: 520px; height: 520px; background: #1c5fe0; opacity: .4; top: -170px; left: -130px; }
.rm-orb--b { width: 460px; height: 460px; background: #f78d12; opacity: .22; bottom: -230px; right: -110px; }
html.fx .rm-orb--a { animation: rm-drift 15s ease-in-out infinite alternate; }
html.fx .rm-orb--b { animation: rm-drift 19s ease-in-out infinite alternate-reverse; }
@keyframes rm-drift {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(64px, 42px) scale(1.12); }
}

.rm-hero .container { position: relative; z-index: 1; text-align: center; }
.rm-kicker {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .34em;
  color: var(--blue-hi);
}
.rm-title {
  margin-top: 22px;
  font-size: clamp(42px, 7vw, 90px);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.12;
}
.rm-title .grad {
  background: linear-gradient(93deg, #6ea8ff 0%, #93b5f9 40%, var(--orange-hi) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.rm-sub {
  margin: 26px auto 0;
  max-width: 680px;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--dark-ink-2);
}
/* hero 载入编排:kicker → 题 → 副标 → 节拍 */
html.fx .rm-kicker { animation: rm-rise .7s var(--fx-ease) both; }
html.fx .rm-title  { animation: rm-rise .85s var(--fx-ease) .12s both; }
html.fx .rm-sub    { animation: rm-rise .85s var(--fx-ease) .26s both; }
@keyframes rm-rise { from { opacity: 0; translate: 0 24px; } to { opacity: 1; translate: 0 0; } }

/* ---------- 横向滑动时间线:一卡一列,沿轴线上下交错(R31) ---------- */
.rm-body { background: var(--bg); padding: 88px 0 64px; overflow: hidden; }

/* 图例 + 滑动提示 */
.rm-legend {
  max-width: var(--container);
  margin: 0 auto 44px;
  padding: 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.rm-legend-items { display: flex; gap: 24px; flex-wrap: wrap; }
.rm-lg { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 500; color: var(--ink-2); }
.rm-lg i { width: 8px; height: 8px; border-radius: 50%; background: var(--nc); box-shadow: 0 0 8px var(--ng); }
.rm-hint { font-family: var(--mono); font-size: 11.5px; letter-spacing: .18em; color: var(--ink-3); white-space: nowrap; }

/* 横向滚动轨道:隐藏滚动条、两端渐隐、卡片吸附 */
.rm-track {
  overflow-x: auto;
  scrollbar-width: none;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 56px, #000 calc(100% - 56px), transparent);
  mask-image: linear-gradient(90deg, transparent, #000 56px, #000 calc(100% - 56px), transparent);
}
.rm-track::-webkit-scrollbar { display: none; }

/* 轨道内衬:宽度随内容,轴通贯左右 */
.rm-rail { position: relative; display: flex; gap: 24px; width: max-content; padding: 0 64px; }
.rm-rail::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 2px; margin-top: -1px;
  background: var(--line);
}
/* 轴渐变填充:随轨道滚动进度左→右绘制 */
.rm-railfill {
  position: absolute;
  left: 0; top: 50%;
  width: 100%; height: 2px; margin-top: -1px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--blue) 0%, #4fb96e 50%, var(--orange) 80%);
  box-shadow: 0 0 12px rgba(32, 117, 242, .3);
  transform-origin: 0 50%;
  transform: scaleX(1);
}
html.fx .rm-railfill { transform: scaleX(var(--p, .02)); }
/* 轴右端箭头(滚动到尽头可见) */
.rm-rail::after {
  content: "";
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  border-left: 9px solid var(--orange);
  border-top: 5.5px solid transparent;
  border-bottom: 5.5px solid transparent;
  filter: drop-shadow(0 0 6px rgba(253, 166, 29, .5));
}

/* 站点:一卡一列,沿轴线上下交错 */
.rm-stop { position: relative; flex: 0 0 auto; width: 252px; height: 400px; scroll-snap-align: center; }
.rm-node {
  position: absolute;
  left: 50%; top: 50%;
  z-index: 2;
  width: 12px; height: 12px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: var(--nc, var(--blue));
  box-shadow: 0 0 0 4px #fff, 0 0 16px var(--ng, rgba(32, 117, 242, .55));
}
html.fx .rm-node::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid var(--ng, rgba(32, 117, 242, .5));
  animation: rm-pulse 2.6s ease-out infinite;
}
@keyframes rm-pulse {
  from { transform: scale(.55); opacity: .9; }
  to   { transform: scale(1.9); opacity: 0; }
}
/* 引接线:轴 → 卡 */
.rm-stem { position: absolute; left: 50%; width: 2px; height: 28px; margin-left: -1px; }
.rm-stop--up .rm-stem { bottom: 50%; background: linear-gradient(180deg, transparent, var(--nc, var(--blue))); }
.rm-stop--dn .rm-stem { top: 50%; background: linear-gradient(180deg, var(--nc, var(--blue)), transparent); }

/* 卡片:锚在靠轴一侧,随文本自然向远端伸展 */
.rm-card {
  position: absolute;
  left: 0; right: 0;
  padding: 16px 18px 17px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 3px 14px rgba(11, 14, 20, .04);
  transition: transform .35s var(--fx-ease), box-shadow .35s var(--fx-ease), border-color .35s ease;
}
.rm-stop--up .rm-card { bottom: calc(50% + 28px); }
.rm-stop--dn .rm-card { top: calc(50% + 28px); }
.rm-card:hover {
  transform: translateY(-3px);
  border-color: rgba(32, 117, 242, .32);
  box-shadow: 0 14px 34px -12px rgba(32, 117, 242, .18);
}
/* 入场揭示:上卡自上下沉、下卡自下浮起;级联 --d 由 JS 按序写入 */
html.fx .rm-card {
  opacity: 0;
  transition: opacity .6s var(--fx-ease), translate .6s var(--fx-ease),
    transform .35s var(--fx-ease), box-shadow .35s var(--fx-ease), border-color .35s ease;
  transition-delay: var(--d, 0s), var(--d, 0s), 0s, 0s, 0s;
}
html.fx .rm-stop--up .rm-card { translate: 0 -18px; }
html.fx .rm-stop--dn .rm-card { translate: 0 18px; }
html.fx .rm-card.in { opacity: 1; translate: 0 0; }
.rm-card h3 { margin-top: 10px; font-size: 16px; font-weight: 600; letter-spacing: -.01em; text-wrap: balance; }
.rm-card p { margin-top: 6px; font-size: 13.5px; line-height: 1.75; color: var(--ink-2); text-wrap: pretty; }

/* 状态徽标 */
.rm-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--cc, var(--blue));
}
.rm-chip::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cc, var(--blue));
}
.rm-chip--pulse::before { animation: rm-blink 1.6s ease-in-out infinite; }
@keyframes rm-blink { 0%, 100% { opacity: 1; } 50% { opacity: .25; } }

/* 状态配色(落在站点上,节点/引接线/徽标/图例共享) */
.rm-st-now   { --nc: var(--blue);   --ng: rgba(32, 117, 242, .55);  --cc: var(--blue); }
.rm-st-next  { --nc: #34a853;      --ng: rgba(52, 168, 83, .55);   --cc: #26824a; }
.rm-st-later { --nc: var(--orange); --ng: rgba(253, 166, 29, .6);   --cc: #d97f06; }

/* ---------- 响应式:横滑保留(触屏天然横滑),轨道收紧 ---------- */
@media (max-width: 860px) {
  .rm-hero { padding: 118px 0 72px; }
  .rm-body { padding: 64px 0 40px; }
  .rm-legend { padding: 0 24px; margin-bottom: 30px; }
  .rm-hint { display: none; }  /* 触屏无需提示 */
  .rm-rail { padding: 0 28px; gap: 16px; }
  .rm-stop { width: 236px; height: 380px; }
  .rm-track {
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 28px, #000 calc(100% - 28px), transparent);
    mask-image: linear-gradient(90deg, transparent, #000 28px, #000 calc(100% - 28px), transparent);
  }
}

/* ---------- 降级:reduced-motion 全静态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .rm-orb, .rm-node::after, .rm-chip--pulse::before { animation: none !important; }
  html.fx .rm-railfill { transform: scaleX(1); }
  html.fx .rm-card { opacity: 1; translate: 0 0; transition: none; }
}