:root {
  --bg: #14110e;
  --paper: #1e1914;
  --ink: #f3ead7;
  --muted: #a8987c;
  --line: #3a3228;
  --brass: #c9a227;
  --ember: #e07040;
  --header-h: 4.25rem;
  --max: 1170px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(900px 360px at 12% -8%, rgba(201, 162, 39, 0.14), transparent 55%),
    radial-gradient(700px 320px at 100% 0%, rgba(224, 112, 64, 0.1), transparent 50%),
    repeating-linear-gradient(
      90deg,
      transparent 0 22px,
      rgba(201, 162, 39, 0.03) 22px 23px
    ),
    linear-gradient(180deg, #1b1611, var(--bg) 240px);
  line-height: 1.7;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--brass); }
button { font: inherit; }

.bd-skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--brass);
  color: #1a1408;
  padding: 0.6rem 1rem;
  z-index: 1000;
}
.bd-skip:focus { left: 0.75rem; top: 0.75rem; }

.bd-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(20, 17, 14, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.bd-header::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--ember), var(--brass), transparent 70%);
}

.bd-header-inner {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.bd-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-shrink: 0;
  color: var(--ink) !important;
}
.bd-brand-mark {
  width: 1.55rem;
  height: 1.55rem;
  border: 2px solid var(--brass);
  transform: rotate(45deg);
  background: linear-gradient(135deg, var(--ember), transparent 60%);
  box-shadow: inset 0 0 0 3px var(--bg);
}
.bd-brand span:last-child {
  font-weight: 800;
  letter-spacing: 0.14em;
  font-size: clamp(1rem, 2vw, 1.2rem);
  white-space: nowrap;
  color: var(--brass);
}

.bd-nav-toggle {
  margin-left: auto;
  height: 2.4rem;
  padding: 0 0.85rem 0 0.7rem;
  border: 1px solid var(--brass);
  background: transparent;
  color: var(--brass);
  display: none;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  z-index: 60;
  border-radius: 0.2rem;
}
.bd-nav-toggle b {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}
.bd-nav-toggle i {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}
.bd-nav-toggle i span {
  width: 14px;
  height: 2px;
  background: var(--brass);
}

.bd-nav {
  position: fixed;
  top: 3px;
  left: 50%;
  transform: translateX(-50%);
  width: min(var(--max), calc(100% - 2rem));
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  z-index: 51;
  pointer-events: none;
}
.bd-nav > ul {
  pointer-events: auto;
  display: flex;
  gap: 0.1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.bd-nav-item { position: relative; }
.bd-nav-parent {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 1rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  cursor: default;
  color: var(--ink);
  border: 1px solid transparent;
}
.bd-nav-item:hover .bd-nav-parent,
.bd-nav-item:focus-within .bd-nav-parent {
  color: #1a1408;
  background: var(--brass);
  border-color: var(--brass);
}
.bd-sub {
  display: none;
  position: absolute;
  top: calc(100% + 0.4rem);
  right: 0;
  min-width: 10.2rem;
  margin: 0;
  padding: 0.4rem;
  list-style: none;
  background: #241e17;
  border: 1px solid var(--brass);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
}
.bd-nav-item:hover .bd-sub,
.bd-nav-item:focus-within .bd-sub { display: block; }
.bd-sub a {
  display: block;
  padding: 0.5rem 0.7rem;
  color: var(--ink);
}
.bd-sub a:hover {
  background: rgba(201, 162, 39, 0.16);
  color: var(--brass);
}

.bd-wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin: 1.35rem auto 3rem;
}
.bd-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 17.4rem;
  gap: 1.45rem;
  align-items: start;
}

.bd-banner {
  margin: 0 0 1rem;
  overflow: hidden;
  background: #0f0c09;
  border: 1px solid var(--line);
  position: relative;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}
.bd-banner::after {
  content: "暗室胶片";
  position: absolute;
  left: 0.85rem;
  bottom: 0.85rem;
  padding: 0.22rem 0.6rem;
  border: 1px solid var(--brass);
  color: var(--brass);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  background: rgba(20, 17, 14, 0.78);
}
.bd-banner img {
  width: 100%;
  max-height: 180px;
  object-fit: cover;
  opacity: 0.86;
  filter: sepia(0.25) contrast(1.05);
}

.bd-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.85rem;
}

.bd-card {
  display: grid;
  grid-template-columns: 5.3rem minmax(0, 1fr);
  gap: 0.95rem;
  align-items: start;
  padding: 0.95rem 1rem 0.95rem 1.55rem;
  background: var(--paper);
  border: 1px solid var(--line);
  position: relative;
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease);
}
.bd-card::before {
  content: "";
  position: absolute;
  left: 0.45rem;
  top: 0.7rem;
  bottom: 0.7rem;
  width: 0.55rem;
  background:
    radial-gradient(circle, var(--bg) 45%, transparent 46%) 50% 12% / 0.45rem 0.45rem no-repeat,
    radial-gradient(circle, var(--bg) 45%, transparent 46%) 50% 38% / 0.45rem 0.45rem no-repeat,
    radial-gradient(circle, var(--bg) 45%, transparent 46%) 50% 62% / 0.45rem 0.45rem no-repeat,
    radial-gradient(circle, var(--bg) 45%, transparent 46%) 50% 88% / 0.45rem 0.45rem no-repeat,
    linear-gradient(180deg, var(--brass), var(--ember));
  border-radius: 2px;
  opacity: 0.9;
}
.bd-card:hover {
  transform: translateX(3px);
  border-color: rgba(201, 162, 39, 0.55);
}
.bd-card-cover {
  overflow: hidden;
  background: #0f0c09;
  min-height: 5.3rem;
  height: 5.3rem;
  border: 1px solid var(--line);
}
.bd-card-cover img {
  width: 100%;
  height: 5.3rem;
  object-fit: cover;
  min-height: 5.3rem;
  filter: sepia(0.15);
}
.bd-card h2 {
  margin: 0 0 0.28rem;
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.4;
  font-weight: 750;
}
.bd-card h2 a { color: var(--ink); }
.bd-card h2 a:hover { color: var(--brass); }
.bd-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.bd-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.5rem;
  color: var(--ember);
  font-size: 0.74rem;
  font-variant-numeric: tabular-nums;
}
.bd-meta-l {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.bd-avatar {
  width: 1.05rem;
  height: 1.05rem;
  object-fit: cover;
  border-radius: 1px;
}

.bd-crumb {
  margin: 0 0 0.9rem;
  color: var(--muted);
  font-size: 0.86rem;
}
.bd-crumb a { color: var(--brass); }

.bd-pager {
  display: flex;
  justify-content: flex-start;
  gap: 0.55rem;
  margin: 1.15rem 0 0.2rem;
}
.bd-pager a {
  min-width: 6.6rem;
  text-align: center;
  padding: 0.65rem 1.05rem;
  background: var(--brass);
  color: #1a1408 !important;
  font-weight: 800;
  letter-spacing: 0.08em;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}
.bd-pager a:hover { background: var(--ember); color: #fff !important; }

.bd-aside {
  position: sticky;
  top: calc(var(--header-h) + 0.85rem);
  display: grid;
  gap: 0.85rem;
}
.bd-side {
  background: var(--paper);
  padding: 0.95rem 0.95rem 0.6rem;
  border: 1px solid var(--line);
  border-top: 2px solid var(--brass);
}
.bd-side h3 {
  margin: 0 0 0.7rem;
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--brass);
}
.bd-side ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.bd-side li { border-top: 1px solid var(--line); }
.bd-side li a {
  display: flex;
  gap: 0.5rem;
  padding: 0.58rem 0;
  color: var(--ink);
  font-size: 0.88rem;
}
.bd-side .bd-widlist a:hover { color: var(--brass); }
.bd-topthub a {
  flex-direction: column;
  gap: 0.4rem;
  padding-top: 0;
}
.bd-topthub img {
  width: 100%;
  height: 7.3rem;
  object-fit: cover;
  filter: sepia(0.2);
}
.bd-topthub span { font-weight: 650; }

.bd-article-card {
  background: var(--paper);
  padding: clamp(1.15rem, 3.2vw, 2.2rem);
  border: 1px solid var(--line);
  box-shadow: inset 0 3px 0 var(--brass);
}
.bd-article-card h1 {
  margin: 0 0 0.7rem;
  text-align: left;
  font-size: clamp(1.32rem, 3vw, 1.9rem);
  line-height: 1.35;
  color: var(--brass);
}
.bd-bloginfo {
  display: flex;
  justify-content: flex-start;
  color: var(--ember);
  font-size: 0.82rem;
  margin-bottom: 1.25rem;
}
.bd-bloginfo ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.bd-prose {
  font-size: clamp(1rem, 1.15vw, 1.08rem);
  line-height: 1.95;
  color: #e8dcc4;
  max-width: 44rem;
}
.bd-prose img,
.bd-prose video,
.bd-prose iframe,
.bd-prose table { max-width: 100%; }
.bd-prose table { display: block; overflow-x: auto; }
.bd-copyright {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}
.bd-pagerow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  margin-top: 1.15rem;
}
.bd-pagerow a {
  display: block;
  padding: 0.8rem 0.9rem;
  background: rgba(201, 162, 39, 0.08);
  border: 1px solid var(--line);
  font-size: 0.86rem;
  line-height: 1.45;
}
.bd-pagerow .next { text-align: right; }

.bd-footer {
  background: #0c0a08;
  padding: 1.5rem 1rem 2.3rem;
  text-align: center;
  color: #8a7b63;
  font-size: 0.86rem;
  border-top: 1px solid var(--line);
}
.bd-footer p { margin: 0 0 0.7rem; }
.bd-footer a { color: var(--brass); margin: 0 0.35rem; }

#go-to-top {
  position: fixed;
  right: 1rem;
  bottom: 1.2rem;
  width: 2.55rem;
  height: 2.55rem;
  background: var(--brass);
  color: #1a1408;
  cursor: pointer;
  display: grid;
  place-items: center;
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}
#go-to-top::after { content: "↑"; font-size: 0.95rem; font-weight: 800; }

.bd-mask { display: none; }

@media (max-width: 980px) {
  .bd-layout { grid-template-columns: 1fr; }
  .bd-aside { position: static; }
}

@media (max-width: 768px) {
  .bd-nav-toggle { display: inline-flex; }
  .bd-nav {
    left: auto;
    right: 0;
    top: 0;
    width: min(84vw, 20rem);
    height: 100dvh;
    margin: 0;
    display: block;
    background: #1e1914;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
    padding: 5rem 1.1rem 1.5rem;
    transform: translateX(110%);
    transition: transform 0.35s var(--ease), visibility 0.35s;
    overflow-y: auto;
    visibility: hidden;
    z-index: 55;
    pointer-events: auto;
    border-left: 3px solid var(--brass);
  }
  body.nav-open .bd-nav {
    transform: translateX(0);
    visibility: visible;
  }
  .bd-nav > ul {
    flex-direction: column;
    gap: 0.15rem;
  }
  .bd-sub {
    display: block;
    position: static;
    box-shadow: none;
    border: 0;
    padding: 0 0 0.4rem 0.8rem;
    background: transparent;
  }
  .bd-nav-parent { color: var(--ink); width: 100%; }
  .bd-nav-item:hover .bd-nav-parent {
    background: rgba(201, 162, 39, 0.14);
    color: var(--brass);
  }
  .bd-mask {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(10, 8, 6, 0.62);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--ease);
    z-index: 40;
  }
  body.nav-open .bd-mask {
    opacity: 1;
    pointer-events: auto;
  }
  body.nav-open { overflow: hidden; }
  .bd-card {
    grid-template-columns: 4.3rem minmax(0, 1fr);
    gap: 0.65rem;
    padding: 0.8rem 0.8rem 0.8rem 1.35rem;
  }
  .bd-card-cover,
  .bd-card-cover img {
    min-height: 4.3rem;
    height: 4.3rem;
  }
  .bd-pagerow { grid-template-columns: 1fr; }
  .bd-pagerow .next { text-align: left; }
}

@media (max-width: 420px) {
  .bd-card {
    grid-template-columns: 1fr;
    padding-left: 1.45rem;
  }
  .bd-card-cover,
  .bd-card-cover img {
    width: 100%;
    height: 8.5rem;
    min-height: 8.5rem;
  }
}

@media (min-width: 1440px) {
  :root { --max: 1250px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}