/* ============================================
   NQ&LSY的线上小家 · 技术与生活笔记
   设计语言：暗色电影相册（Cinematic Noir）
   照片是主角，文字是旁白，界面退到暗处

   回退到旧版浅色「极简未来主义×Dieter Rams」只需替换 :root：
   --bg:#F5F5F7; --bg-alt:#FFFFFF; --card:#FFFFFF; --card-hover:#FAFAFA;
   --ink:#1D1D1F; --ink-dim:#1D1D1F; --muted:#86868B; --faint:#86868B;
   --accent:#FF5C1A; --line:#D2D2D7; --line-2:#1D1D1F;
   并移除 .photo-grid img / .era-grid img / .era-feature 的 filter 行
   ============================================ */

:root {
  --bg: #0B0B0D;
  --bg-alt: #101014;
  --card: #16161B;
  --card-hover: #1E1E24;
  --ink: #EDEDF0;
  --ink-dim: #C9C9D1;
  --muted: #8E8E99;
  --faint: #5E5E68;
  --accent: #E0A65C;
  --accent-dim: #B8843F;
  --line: rgba(237,237,240,.10);
  --line-2: rgba(237,237,240,.20);
  --shadow: 0 8px 32px rgba(0,0,0,.45);
  --shadow-lg: 0 20px 64px rgba(0,0,0,.65);
  --radius: 14px;
  --max: 1120px;
  --serif: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  --sans: -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

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

html { scroll-behavior:smooth; }

body {
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

a { color:inherit; text-decoration:none; }

::selection { background:var(--accent); color:#0B0B0D; }

/* ===== Nav ===== */
.nav {
  position:fixed; top:0; left:0; right:0; z-index:100;
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 40px;
  background:rgba(11,11,13,.78);
  backdrop-filter:blur(24px) saturate(140%); -webkit-backdrop-filter:blur(24px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color .3s, background .3s;
}
.nav.scrolled { border-bottom-color:var(--line); background:rgba(11,11,13,.92); }
.nav-brand {
  font-family:var(--serif);
  font-size:18px; font-weight:700; letter-spacing:2px;
}
.nav-brand span { color:var(--accent); }
.nav-links { display:flex; gap:32px; }
.nav-links a {
  font-size:14px; color:var(--muted);
  transition:color .2s;
}
.nav-links a:hover { color:var(--ink); }
.nav-cta {
  border:1px solid var(--line-2); border-radius:100px;
  padding:5px 18px;
}
.nav-cta:hover { border-color:var(--accent); color:var(--accent); }

/* ===== Hero ===== */
.hero {
  min-height:100vh; display:flex; flex-direction:column;
  justify-content:center; align-items:flex-start;
  padding:0 40px; max-width:var(--max); margin:0 auto;
  position:relative;
}
.hero-slides {
  position:absolute; inset:0;
  z-index:-2;
  background:#000;
}
.hero-slide {
  position:absolute; inset:0;
  background-size:cover;
  background-position:center;
  opacity:0;
  transform:scale(1.08);
  transition:opacity 1.6s ease, transform 8s linear;
}
.hero-slide.active {
  opacity:1;
  transform:scale(1.0);
  animation:kenburns 8s ease-out forwards;
}
@keyframes kenburns {
  from { transform:scale(1.08); }
  to   { transform:scale(1.0); }
}
.hero-overlay {
  position:absolute; inset:0; z-index:-1;
  background:
    radial-gradient(ellipse at 22% 45%, rgba(11,11,13,.28) 0%, rgba(11,11,13,.86) 72%),
    linear-gradient(180deg, rgba(11,11,13,.62) 0%, rgba(11,11,13,.34) 42%, var(--bg) 100%);
}
.hero-content {
  position:relative; z-index:1; max-width:var(--max); margin:0 auto;
  width:100%;
}
.hero-tag {
  font-size:12px; letter-spacing:5px; text-transform:uppercase;
  color:var(--accent); margin-bottom:24px;
  opacity:0; animation:fadeUp .8s .2s forwards;
}
.hero-title {
  font-family:var(--serif);
  font-size:clamp(36px, 6vw, 72px); font-weight:700;
  line-height:1.28; letter-spacing:2px;
  margin-bottom:28px;
  color:#F7F7F9; text-shadow:0 2px 28px rgba(0,0,0,.6);
  opacity:0; animation:fadeUp .8s .4s forwards;
}
.hero-title em { font-style:normal; color:var(--accent); }
.hero-sub {
  font-size:17px; color:rgba(237,237,240,.72); max-width:560px;
  line-height:1.95;
  margin-bottom:48px;
  opacity:0; animation:fadeUp .8s .6s forwards;
}
.hero-cta {
  display:flex; gap:16px;
  opacity:0; animation:fadeUp .8s .8s forwards;
}
.hero-cta a {
  padding:14px 32px; border-radius:100px;
  font-size:15px; font-weight:500;
  transition:all .25s;
}
.btn-primary { background:var(--ink); color:var(--bg); }
.btn-primary:hover { background:var(--accent); }
.btn-ghost { border:1px solid var(--line-2); }
.btn-ghost:hover { border-color:var(--ink); }

/* Hero grid backdrop */
.hero-grid {
  position:absolute; top:0; right:-100px;
  width:60%; height:100%;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:60px 60px;
  opacity:.5;
  mask-image:linear-gradient(to left, black 20%, transparent 80%);
  -webkit-mask-image:linear-gradient(to left, black 20%, transparent 80%);
  z-index:-1;
}

.hero-dots {
  position:absolute; left:0; bottom:48px;
  display:flex; gap:10px; z-index:2;
}
.hero-dots .dot {
  width:24px; height:2px; border-radius:2px;
  background:rgba(237,237,240,.28);
  transition:background .3s, width .3s;
}
.hero-dots .dot.active { background:var(--accent); width:36px; }
@media (prefers-reduced-motion: reduce) {
  .hero-slide, .hero-slide.active { animation:none; transition:opacity .6s; }
}

/* ===== Section common ===== */
.section {
  padding:120px 40px;
  max-width:var(--max); margin:0 auto;
}
.section-label {
  font-size:12px; letter-spacing:4px; text-transform:uppercase;
  color:var(--accent); margin-bottom:16px;
  display:flex; align-items:center; gap:12px;
}
.section-label::before {
  content:''; width:32px; height:1px; background:var(--accent);
}
.section-title {
  font-family:var(--serif);
  font-size:clamp(28px, 4vw, 44px); font-weight:700;
  letter-spacing:1.5px; margin-bottom:48px;
}

/* ===== Dual-track entry ===== */
.tracks {
  display:grid; grid-template-columns:1fr 1fr; gap:24px;
  margin-top:32px;
}
.track-card {
  position:relative; border-radius:var(--radius);
  padding:48px 40px; min-height:320px;
  display:flex; flex-direction:column; justify-content:flex-end;
  overflow:hidden; cursor:pointer;
  border:1px solid var(--line);
  transition:transform .35s cubic-bezier(.22,1,.36,1), border-color .35s, box-shadow .35s;
}
.track-card:hover {
  transform:translateY(-6px);
  border-color:var(--line-2);
  box-shadow:var(--shadow-lg);
}
.track-life { background:var(--card); }
.track-tech { background:var(--bg-alt); }
.track-card .num {
  position:absolute; top:32px; right:40px;
  font-family:var(--serif); font-size:64px; font-weight:700;
  color:rgba(237,237,240,.06);
}
.track-card h3 {
  font-family:var(--serif); font-size:28px; font-weight:700;
  margin-bottom:12px; letter-spacing:1px;
}
.track-card p { font-size:15px; color:var(--muted); line-height:1.8; }
.track-card .arrow {
  margin-top:24px; font-size:14px; color:var(--accent);
  display:flex; align-items:center; gap:8px;
  transition:gap .2s;
}
.track-card:hover .arrow { gap:14px; }

/* ===== Life placeholder ===== */
.life-placeholder {
  display:grid; grid-template-columns:repeat(3, 1fr); gap:16px;
  margin-top:40px;
}
.life-tile {
  aspect-ratio:1; border-radius:12px;
  background:var(--card); border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  flex-direction:column; gap:8px;
  transition:border-color .3s;
}
.life-tile:hover { border-color:var(--line-2); }
.life-tile .icon { font-size:28px; color:var(--faint); }
.life-tile .label { font-size:12px; color:var(--muted); }
.life-coming {
  text-align:center; padding:48px;
  background:var(--card); border-radius:var(--radius);
  border:1px dashed var(--line-2);
  margin-top:24px;
}
.life-coming h4 { font-family:var(--serif); font-size:20px; margin-bottom:8px; }
.life-coming p { color:var(--muted); font-size:14px; }

/* ===== Blog list ===== */
.blog-filter {
  display:flex; gap:8px; margin-bottom:40px;
  flex-wrap:wrap;
}
.filter-btn {
  padding:8px 20px; border-radius:100px;
  font-size:13px; border:1px solid var(--line);
  background:transparent; color:var(--muted);
  cursor:pointer; transition:all .2s;
}
.filter-btn.active { background:var(--ink); color:var(--bg); border-color:var(--ink); }
.filter-btn:hover:not(.active) { border-color:var(--line-2); color:var(--ink); }

.blog-grid {
  display:grid; grid-template-columns:1fr 1fr; gap:24px;
}
.blog-card {
  background:var(--card); border-radius:var(--radius);
  padding:32px; border:1px solid var(--line);
  transition:all .3s cubic-bezier(.22,1,.36,1);
  display:flex; flex-direction:column;
}
.blog-card:hover {
  border-color:var(--line-2); background:var(--card-hover);
  box-shadow:var(--shadow);
  transform:translateY(-4px);
}
.blog-card .tag {
  display:inline-block; font-size:11px; letter-spacing:1px;
  text-transform:uppercase; margin-bottom:16px;
  padding:4px 12px; border-radius:100px;
  width:fit-content;
}
.tag-ai { background:rgba(224,166,92,.14); color:var(--accent); }
.tag-arch { background:rgba(237,237,240,.07); color:var(--ink-dim); }
.blog-card h3 {
  font-family:var(--serif); font-size:22px; font-weight:700;
  line-height:1.5; letter-spacing:.5px; margin-bottom:12px;
}
.blog-card .excerpt {
  font-size:14px; color:var(--muted); line-height:1.8;
  margin-bottom:20px; flex:1;
}
.blog-card .meta {
  display:flex; justify-content:space-between; align-items:center;
  font-size:13px; color:var(--faint);
}
.blog-card .meta .read { color:var(--accent); font-weight:500; }

/* ===== Footer ===== */
.footer {
  padding:72px 40px 40px;
  border-top:1px solid var(--line);
}
.footer-grid {
  max-width:var(--max); margin:0 auto 40px;
  display:grid; grid-template-columns:2fr 1fr 1fr; gap:40px;
}
.footer-brand {
  font-family:var(--serif); font-size:16px; font-weight:700; letter-spacing:1px;
}
.footer-brand span { color:var(--accent); }
.f-desc {
  color:var(--muted); font-size:13px; line-height:1.75;
  margin-top:12px; max-width:320px;
}
.f-title {
  font-size:11px; letter-spacing:3px; text-transform:uppercase;
  color:var(--faint); font-family:var(--mono); margin-bottom:14px;
}
.f-col a {
  display:block; font-size:13.5px; color:var(--muted);
  margin-bottom:10px; text-decoration:none;
  transition:color .2s;
}
.f-col a:hover { color:var(--accent); }
/* 公安联网备案：图标 + 备案号，行内排布 */
.f-col a.f-ga {
  display:inline-flex; align-items:center; gap:7px;
  font-size:12.5px; color:var(--faint); margin-top:2px;
}
.f-col a.f-ga img { width:20px; height:20px; display:block; opacity:.92; }
.f-col a.f-ga:hover { color:var(--accent); }
.f-col a.f-ga:hover img { opacity:1; }
.f-copy {
  max-width:var(--max); margin:0 auto;
  padding-top:24px; border-top:1px solid var(--line);
  font-size:12px; color:var(--faint);
}
.f-copy a.icp { color:var(--faint); text-decoration:none; border-bottom:1px solid transparent; transition:color .2s ease, border-color .2s ease; }
.f-copy a.icp:hover { color:var(--ink); border-bottom-color:var(--accent); }
@media (max-width:768px) {
  .footer { padding:56px 20px 32px; }
  .footer-grid { grid-template-columns:1fr; gap:28px; margin-bottom:32px; }
}

/* ===== 跨页过渡（原生 View Transitions，不支持的浏览器自动忽略） ===== */
@view-transition { navigation: auto; }
::view-transition-old(root), ::view-transition-new(root) {
  animation-duration:.28s;
  animation-timing-function:cubic-bezier(.22,1,.36,1);
}
@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root), ::view-transition-new(root) { animation:none; }
}

/* ===== 可访问性 ===== */
:focus-visible {
  outline:2px solid var(--accent); outline-offset:2px;
  border-radius:2px;
}
.skip-link {
  position:fixed; left:-9999px; top:0; z-index:200;
  background:var(--accent); color:#0B0B0D;
  padding:10px 16px; font-size:13px; font-weight:600;
  border-radius:0 0 8px 0; text-decoration:none;
}
.skip-link:focus { left:0; }

/* ===== Article detail ===== */
.article {
  padding:120px 40px 80px;
  max-width:780px; margin:0 auto;
}
.article-back {
  display:inline-flex; align-items:center; gap:8px;
  font-size:14px; color:var(--muted); margin-bottom:48px;
  transition:color .2s, gap .2s;
}
.article-back:hover { color:var(--accent); gap:12px; }
.article-header { margin-bottom:48px; }
.article-header .tag {
  display:inline-block; font-size:12px; letter-spacing:1px;
  text-transform:uppercase; margin-bottom:16px;
  padding:4px 12px; border-radius:100px;
}
.article-header h1 {
  font-family:var(--serif);
  font-size:clamp(28px, 4vw, 40px); font-weight:700;
  line-height:1.45; margin-bottom:16px; letter-spacing:1px;
}
.article-header .meta {
  font-size:14px; color:var(--faint);
  display:flex; gap:16px;
}
.article-body { font-size:17px; line-height:1.95; color:var(--ink-dim); }
.article-body h2 {
  font-family:var(--serif); font-size:24px; font-weight:700;
  margin:48px 0 16px; line-height:1.5; letter-spacing:1px;
  color:var(--ink);
}
.article-body h3 {
  font-size:18px; font-weight:600; margin:32px 0 12px;
  color:var(--ink);
}
.article-body p { margin-bottom:24px; }
.article-body ul, .article-body ol { margin:0 0 24px 20px; }
.article-body li { margin-bottom:8px; }
.article-body code {
  font-family:var(--mono); font-size:14px;
  background:rgba(237,237,240,.08); color:#E4BE85;
  padding:2px 8px; border-radius:4px;
}
.article-body pre {
  background:#08080A; color:#D6D6DE;
  border:1px solid var(--line);
  padding:24px; border-radius:12px; overflow-x:auto;
  margin:0 0 24px; font-size:14px; line-height:1.7;
}
.article-body pre code { background:none; padding:0; color:inherit; }
.article-body blockquote {
  border-left:3px solid var(--accent);
  padding-left:24px; margin:0 0 24px;
  font-style:italic; color:var(--muted);
}
.article-body strong { font-weight:600; color:var(--ink); }
.article-body a { color:var(--accent); border-bottom:1px solid rgba(224,166,92,.4); }
.article-body table {
  width:100%; border-collapse:collapse; margin:0 0 24px;
  font-size:15px;
}
.article-body th, .article-body td {
  padding:12px 16px; text-align:left;
  border-bottom:1px solid var(--line);
}
.article-body th {
  font-weight:600; color:var(--muted); font-size:13px;
  letter-spacing:.5px;
}
.article-body td:first-child { color:var(--muted); }
.article-divider { height:1px; background:var(--line); margin:64px 0 32px; }
.article-nav { display:flex; justify-content:space-between; gap:24px; }
.article-nav a { font-size:14px; color:var(--muted); transition:color .2s; }
.article-nav a:hover { color:var(--accent); }

/* ===== Reveal animation ===== */
.reveal {
  opacity:0; transform:translateY(40px);
  transition:opacity .8s cubic-bezier(.22,1,.36,1), transform .8s cubic-bezier(.22,1,.36,1);
}
.reveal.visible { opacity:1; transform:translateY(0); }

@keyframes fadeUp {
  from { opacity:0; transform:translateY(30px); }
  to { opacity:1; transform:translateY(0); }
}

/* ===== Responsive ===== */
@media (max-width:768px) {
  .nav { padding:12px 20px; }
  .nav-links { gap:16px; }
  .nav-links a:not(.nav-cta) { display:none; }
  .hero { padding:0 20px; }
  .section { padding:80px 20px; }
  .tracks { grid-template-columns:1fr; }
  .blog-grid { grid-template-columns:1fr; }
  .life-placeholder { grid-template-columns:repeat(2,1fr); }
  .photo-grid { grid-template-columns:repeat(2,1fr) !important; }
  .block-head { grid-template-columns:80px 1fr; gap:16px; }
  .lb-prev, .lb-next { width:44px; height:44px; font-size:24px; }
  .footer { flex-direction:column; gap:16px; text-align:center; }
}

/* ===== Life album (时间序相册) ===== */
.filter-bar {
  display:flex; gap:8px; margin-bottom:48px;
  flex-wrap:wrap;
}

.album {
  display:flex; flex-direction:column; gap:80px;
  margin-top:16px;
}
.album-block.hidden { display:none; }

.block-head {
  display:grid;
  grid-template-columns:120px 1fr;
  gap:32px; align-items:start;
  margin-bottom:24px;
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
}
.block-date {
  font-family:var(--serif);
  font-size:28px; font-weight:700; color:var(--accent);
  letter-spacing:2px; line-height:1.2;
}
.block-title {
  font-family:var(--serif);
  font-size:24px; font-weight:700; margin-bottom:6px;
  letter-spacing:1px;
}
.block-cap {
  font-size:14px; color:var(--muted); line-height:1.8;
  max-width:640px;
}

.photo-grid {
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:12px;
}
.photo-grid img {
  width:100%; aspect-ratio:1/1;
  object-fit:cover; border-radius:6px;
  cursor:pointer;
  background:#17171C;
  border:1px solid rgba(237,237,240,.06);
  filter:brightness(.88) saturate(.95);
  transition:transform .35s cubic-bezier(.22,1,.36,1), box-shadow .25s, filter .35s, border-color .35s;
}
.photo-grid img:hover {
  transform:translateY(-3px);
  box-shadow:var(--shadow-lg);
  filter:brightness(1.08) saturate(1.05);
  border-color:rgba(237,237,240,.18);
}

/* ===== Lightbox ===== */
.lightbox {
  position:fixed; inset:0; z-index:200;
  background:rgba(4,4,5,.97);
  display:none; align-items:center; justify-content:center;
  padding:60px 80px;
  opacity:0; transition:opacity .25s;
}
.lightbox.open { display:flex; opacity:1; }

.lb-img {
  max-width:100%; max-height:100%;
  object-fit:contain;
  border-radius:3px;
  box-shadow:0 24px 80px rgba(0,0,0,.8);
  user-select:none;
}
.lb-close, .lb-prev, .lb-next {
  position:absolute;
  background:rgba(237,237,240,.10);
  color:var(--ink); border:0; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition:background .2s, transform .2s;
  font-family:var(--sans);
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover { background:rgba(237,237,240,.20); }
.lb-close { top:24px; right:24px; width:44px; height:44px; border-radius:50%; font-size:22px; }
.lb-prev, .lb-next {
  top:50%; transform:translateY(-50%);
  width:56px; height:56px; border-radius:50%;
  font-size:28px; line-height:1;
}
.lb-prev { left:24px; }
.lb-next { right:24px; }
.lb-prev:hover, .lb-next:hover { transform:translateY(-50%) scale(1.05); }

/* ===== Lightbox 照片档案面板 ===== */
.lb-meta {
  position:absolute; left:24px; bottom:24px;
  min-width:210px; padding:16px 18px;
  background:rgba(16,16,20,.85);
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:12px; color:var(--ink);
}
.lbm-title {
  font-size:10px; letter-spacing:3px; text-transform:uppercase;
  color:var(--accent); margin-bottom:10px;
  font-family:var(--mono);
}
.lbm-row {
  display:flex; justify-content:space-between; gap:24px;
  font-size:12.5px; line-height:2;
}
.lbm-row span { color:var(--faint); letter-spacing:2px; flex-shrink:0; }
.lbm-row b { font-weight:500; text-align:right; }
.lb-counter {
  position:absolute; top:24px; left:24px;
  color:var(--ink); font-size:13px; opacity:.55;
  font-family:var(--mono); letter-spacing:1px;
}

/* ===== Back to top ===== */
.totop {
  position:fixed; right:32px; bottom:32px; z-index:90;
  width:44px; height:44px; border-radius:50%;
  background:var(--card); color:var(--ink);
  border:1px solid var(--line-2); cursor:pointer; font-size:20px;
  display:flex; align-items:center; justify-content:center;
  opacity:0; transform:translateY(20px);
  transition:opacity .3s, transform .3s, border-color .2s, color .2s;
  box-shadow:var(--shadow);
}
.totop.show { opacity:1; transform:translateY(0); }
.totop:hover { border-color:var(--accent); color:var(--accent); }

/* ===== Section subtitle ===== */
.section-sub {
  font-size:15px; color:var(--muted); line-height:1.8;
}

/* ============================================
   life.html · 记忆长廊
   ============================================ */

/* ===== 吸顶时间轴导航 ===== */
.era-nav {
  position:fixed; top:0; left:0; right:0; z-index:100;
  display:flex; align-items:center; gap:24px;
  padding:14px 40px;
  background:rgba(11,11,13,.86);
  backdrop-filter:blur(24px) saturate(140%); -webkit-backdrop-filter:blur(24px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .3s;
}
.en-brand {
  font-family:var(--serif); font-size:16px; font-weight:700;
  letter-spacing:1px; color:var(--ink); white-space:nowrap;
}
.en-brand span { color:var(--accent); }
.en-links {
  display:flex; gap:4px; flex:1;
  overflow-x:auto; scrollbar-width:none;
}
.en-links::-webkit-scrollbar { display:none; }
.en-links a {
  white-space:nowrap; font-size:13px;
  color:var(--faint);
  padding:5px 14px; border-radius:100px;
  border:1px solid transparent;
  transition:all .25s;
}
.en-links a:hover { color:var(--ink); }
.en-links a.active {
  color:var(--ink); border-color:var(--line-2);
}
.en-home {
  white-space:nowrap; font-size:13px; color:var(--accent);
  border:1px solid rgba(224,166,92,.4);
  padding:5px 16px; border-radius:100px;
  transition:all .25s;
}
.en-home:hover { background:var(--accent); color:#0B0B0D; }

.scroll-progress {
  position:fixed; top:0; left:0; height:2px; width:0;
  background:var(--accent); z-index:101;
  transition:width .1s linear;
}

/* ===== 长廊 Hero（影院式暗场） ===== */
.life-hero {
  min-height:92vh;
  display:flex; align-items:center;
  background:#08080A; color:var(--ink);
  padding:140px 40px 96px;
  position:relative; overflow:hidden;
}
.life-hero::before {
  content:''; position:absolute; top:-120px; right:-120px;
  width:60%; height:80%;
  background-image:
    linear-gradient(rgba(237,237,240,.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(237,237,240,.5) 1px, transparent 1px);
  background-size:64px 64px;
  opacity:.04;
  mask-image:radial-gradient(ellipse at 70% 30%, black 10%, transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse at 70% 30%, black 10%, transparent 70%);
  pointer-events:none;
}
.lh-inner { max-width:var(--max); margin:0 auto; position:relative; }
.lh-tag {
  font-size:12px; letter-spacing:5px; color:var(--accent);
  margin-bottom:24px;
  opacity:0; animation:fadeUp .8s .15s forwards;
}
.life-hero h1 {
  font-family:var(--serif);
  font-size:clamp(48px, 8vw, 96px); font-weight:900;
  letter-spacing:8px; line-height:1.15; margin-bottom:28px;
  opacity:0; animation:fadeUp .8s .3s forwards;
}
.lh-sub {
  font-size:17px; color:rgba(237,237,240,.7);
  max-width:620px; line-height:1.95;
  opacity:0; animation:fadeUp .8s .45s forwards;
}
.lh-stats {
  display:flex; flex-wrap:wrap; gap:0;
  margin-top:56px;
  border-top:1px solid var(--line);
  opacity:0; animation:fadeUp .8s .6s forwards;
}
.lh-stat { padding:28px 48px 0 0; }
.lh-stat b {
  font-family:var(--serif); font-weight:700;
  font-size:44px; line-height:1; display:block; margin-bottom:8px;
}
.lh-stat span {
  font-size:12px; letter-spacing:2px;
  color:var(--faint);
}
.lh-hint {
  margin-top:64px; font-size:13px; letter-spacing:2px;
  color:var(--faint);
  opacity:0; animation:fadeUp .8s .8s forwards;
}

/* ===== 时代章节 ===== */
.era {
  position:relative;
  padding:130px 0 90px;
}
.era-inner {
  max-width:var(--max); margin:0 auto; padding:0 40px;
  position:relative; z-index:1;
}
.era-year {
  position:absolute; top:64px; right:2%;
  font-family:var(--serif); font-weight:900;
  font-size:clamp(90px, 14vw, 190px); line-height:1;
  color:transparent;
  -webkit-text-stroke:1.5px rgba(237,237,240,.08);
  pointer-events:none; user-select:none; z-index:0;
  transition:transform .1s linear;
}
.era-meta {
  display:flex; align-items:center; gap:16px;
  font-size:12px; letter-spacing:4px; text-transform:uppercase;
  margin-bottom:20px;
}
.era-meta span:first-child { color:var(--accent); }
.era-meta .range { color:var(--faint); letter-spacing:1px; }
.era-title {
  font-family:var(--serif);
  font-size:clamp(32px, 4.5vw, 54px); font-weight:700;
  letter-spacing:2px; margin-bottom:10px;
}
.era-sub {
  font-family:var(--serif);
  font-size:18px; color:var(--muted); margin-bottom:16px;
  letter-spacing:2px;
}
.era-cap {
  max-width:580px; color:var(--muted);
  font-size:15px; line-height:1.9; margin-bottom:44px;
}

/* 瀑布流照片墙 */
.era-grid {
  columns:3; column-gap:14px;
}
.era-grid img {
  display:block; width:100%; height:auto;
  border-radius:6px; margin-bottom:14px;
  background:#17171C; cursor:pointer;
  border:1px solid rgba(237,237,240,.06);
  filter:brightness(.88) saturate(.95);
  transition:transform .35s cubic-bezier(.22,1,.36,1), box-shadow .25s, filter .35s;
}
.era-grid img:hover {
  transform:translateY(-3px);
  box-shadow:var(--shadow-lg);
  filter:brightness(1.08) saturate(1.05);
}

/* 瀑布流叙事卡 */
.era-grid .story-card {
  break-inside:avoid; margin-bottom:14px;
  border:1px solid var(--line); border-radius:10px;
  background:var(--card);
  padding:22px 20px 20px;
}
.story-card .sc-date {
  display:block; font-size:11px; letter-spacing:2.5px;
  text-transform:uppercase; color:var(--accent);
  font-family:var(--mono); margin-bottom:10px;
}
.story-card h4 {
  font-family:var(--serif); font-size:19px; font-weight:700;
  margin-bottom:8px; letter-spacing:1px;
}
.story-card p { font-size:13.5px; color:var(--muted); line-height:1.9; }
.era-dark .era-grid .story-card {
  background:#1A1A20; border-color:var(--line);
}
.era-dark .story-card p { color:var(--muted); }

/* 足迹带（远行章节） */
.footprint {
  margin:-8px 0 48px; padding:24px 24px 14px;
  border:1px solid var(--line); border-radius:14px;
  background:var(--card); overflow-x:auto;
}
.footprint svg {
  display:block; min-width:780px; width:100%; height:auto;
}
.fp-label {
  font-size:11px; letter-spacing:3px; text-transform:uppercase;
  color:var(--faint); font-family:var(--mono);
  margin-bottom:6px;
}

/* ===== 支线 · 横向胶片条（猫咪小径） ===== */
.rail-section { padding:0 0 90px; }
.rail-head {
  max-width:var(--max); margin:0 auto 18px; padding:0 40px;
  display:flex; justify-content:space-between; align-items:baseline;
}
.rail-label {
  font-family:var(--serif); font-size:20px; font-weight:700;
  letter-spacing:1px;
}
.rail-hint {
  font-size:12px; color:var(--faint); letter-spacing:2px;
  font-family:var(--mono);
}
.rail {
  display:flex; gap:12px;
  overflow-x:auto; scroll-snap-type:x mandatory;
  padding:4px 40px 16px;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar { display:none; }
.rail img {
  height:240px; width:auto; flex-shrink:0;
  border-radius:6px; scroll-snap-align:start;
  cursor:pointer;
  border:1px solid rgba(237,237,240,.06);
  filter:brightness(.88) saturate(.95);
  transition:filter .3s, transform .3s;
}
.rail img:hover { filter:brightness(1.06) saturate(1); transform:translateY(-3px); }

/* ===== 文章页阅读进度条 ===== */
.art-progress {
  position:fixed; top:0; left:0; height:2px; width:0;
  background:var(--accent); z-index:99;
  transition:width .08s linear;
}

/* ===== 暗场章节（关键事件幕间） ===== */
.era-dark { background:var(--bg-alt); color:var(--ink); }
.era-dark .era-cap { color:var(--muted); }
.era-dark .era-grid img { background:#1D1D23; }
.era-feature {
  display:block; width:100%;
  aspect-ratio:21/9; object-fit:cover;
  border-radius:10px; margin-bottom:16px;
  background:#17171C; cursor:pointer;
  border:1px solid rgba(237,237,240,.06);
  filter:brightness(.9);
  transition:transform .35s cubic-bezier(.22,1,.36,1), box-shadow .25s, filter .35s;
}
.era-feature:hover {
  transform:translateY(-3px);
  box-shadow:var(--shadow-lg);
  filter:brightness(1.05);
}

/* ===== 长廊结尾 ===== */
.life-end {
  padding:140px 40px;
  text-align:center;
}
.life-end h2 {
  font-family:var(--serif);
  font-size:clamp(28px, 4vw, 44px); font-weight:700;
  letter-spacing:2px; margin-bottom:16px;
}
.life-end p { color:var(--muted); margin-bottom:40px; }
.le-cta { display:flex; gap:16px; justify-content:center; }

/* ===== 首页生活精选入口卡 ===== */
.gallery-entry {
  display:flex; align-items:center; gap:36px;
  background:var(--card);
  border:1px solid var(--line);
  color:var(--ink); border-radius:var(--radius);
  padding:40px 44px; margin-bottom:56px;
  transition:transform .35s cubic-bezier(.22,1,.36,1), border-color .35s, box-shadow .35s;
}
.gallery-entry:hover {
  transform:translateY(-6px);
  border-color:var(--line-2);
  box-shadow:var(--shadow-lg);
}
.ge-num {
  font-family:var(--serif); font-size:72px; font-weight:900;
  color:var(--accent); line-height:1;
}
.gallery-entry .ge-body { flex:1; }
.gallery-entry h3 {
  font-family:var(--serif); font-size:26px; font-weight:700;
  letter-spacing:1px; margin-bottom:8px;
}
.gallery-entry p { font-size:14px; color:var(--muted); line-height:1.8; }
.ge-arrow {
  white-space:nowrap; font-size:14px; color:var(--accent);
  display:flex; align-items:center; gap:8px;
  transition:gap .2s;
}
.gallery-entry:hover .ge-arrow { gap:14px; }

/* ===== 响应式（长廊） ===== */
@media (max-width:768px) {
  .era-nav { padding:12px 20px; gap:12px; }
  .en-brand { font-size:14px; }
  .en-home { padding:4px 12px; }
  .life-hero { padding:120px 20px 72px; min-height:auto; }
  .lh-stat { padding-right:28px; }
  .lh-stat b { font-size:32px; }
  .lh-hint { margin-top:44px; }
  .era { padding:96px 0 64px; }
  .era-inner { padding:0 20px; }
  .era-year { font-size:80px; top:44px; }
  .era-grid { columns:2; column-gap:10px; }
  .era-grid img { margin-bottom:10px; }
  .era-grid .story-card { margin-bottom:10px; padding:16px 14px 14px; }
  .story-card h4 { font-size:16px; }
  .story-card p { font-size:12.5px; }
  .footprint { margin:0 0 32px; padding:16px 16px 10px; }
  .lb-meta {
    left:16px; right:16px; bottom:16px; min-width:0;
    padding:12px 14px;
  }
  .lbm-row { line-height:1.9; }
  .era-feature { aspect-ratio:16/10; }
  .life-end { padding:96px 20px; }
  .le-cta { flex-direction:column; }
  .gallery-entry {
    flex-direction:column; align-items:flex-start; gap:20px;
    padding:32px 28px;
  }
  .ge-num { font-size:52px; }
}

@media (prefers-reduced-motion: reduce) {
  .era-year { transition:none; }
  .scroll-progress { transition:none; }
}