:root {
  --sky: #eef6fb;
  --sky-2: #dcecf7;
  --ink: #22313f;
  --ink-soft: #55697a;
  --blue: #2f7fb8;
  --blue-dark: #1f5a86;
  --paper: #f6f0e2;
  --paper-2: #efe5cf;
  --paper-ink: #3a3124;
  --gold: #a8842c;
  --red: #a63a2b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  background: linear-gradient(180deg, var(--sky) 0%, #f8fbfd 100%);
  color: var(--ink);
  line-height: 1.75;
  min-height: 100vh;
}

/* ===== 页头 ===== */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid #d9e6ef;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(4px);
}
.site-header .wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}
.logo {
  font-size: 19px;
  font-weight: 700;
  color: var(--blue-dark);
  text-decoration: none;
  white-space: nowrap;
}
.logo .logo-sub {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--ink-soft);
  letter-spacing: 1px;
}
.site-header nav {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.site-header nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14px;
}
.site-header nav a:hover { color: var(--blue); }
.site-header nav a.back-link {
  border: 1px solid currentColor;
  border-radius: 14px;
  padding: 2px 12px;
  opacity: 0.85;
}
.site-header nav a.back-link:hover { opacity: 1; }
.search-form {
  display: flex;
  gap: 6px;
}
.search-form input {
  border: 1px solid #c6d8e4;
  border-radius: 16px;
  padding: 6px 14px;
  font-size: 14px;
  width: 190px;
  outline: none;
}
.search-form input:focus { border-color: var(--blue); }
.search-form button {
  border: 0;
  border-radius: 16px;
  background: var(--blue);
  color: #fff;
  padding: 6px 16px;
  cursor: pointer;
  font-size: 14px;
}
.search-form button:hover { background: var(--blue-dark); }

/* ===== 主体 ===== */
.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 20px 64px;
}
.card {
  background: #fff;
  border: 1px solid #e3edf3;
  border-radius: 12px;
  padding: 26px 30px;
  margin-bottom: 22px;
  box-shadow: 0 2px 10px rgba(31, 90, 134, 0.06);
}
.card h2 {
  color: var(--blue-dark);
  font-size: 20px;
  margin: 0 0 12px;
  border-left: 4px solid var(--blue);
  padding-left: 12px;
}
.card h3 { color: var(--blue-dark); font-size: 17px; margin: 22px 0 8px; }
.muted { color: var(--ink-soft); font-size: 14px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin-top: 14px;
}
.tile {
  background: var(--sky);
  border: 1px solid #d4e5f0;
  border-radius: 10px;
  padding: 16px 18px;
}
.tile h4 { margin: 0 0 6px; color: var(--blue-dark); font-size: 15px; }
.tile p { margin: 0; font-size: 13.5px; color: var(--ink-soft); }

.hero {
  background: linear-gradient(135deg, #2f7fb8 0%, #4b97c4 55%, #7fb3d5 100%);
  color: #fff;
  border-radius: 16px;
  padding: 44px 36px;
  margin-bottom: 22px;
  position: relative;
  overflow: hidden;
}
.hero h1 {
  margin: 0 0 8px;
  font-size: 30px;
  letter-spacing: 2px;
}
.hero p { margin: 4px 0; opacity: 0.92; }
.hero .badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 13px;
  margin-top: 10px;
}
.hero svg.hero-art {
  position: absolute;
  right: -30px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.35;
  width: 380px;
  height: 260px;
}

table.docs {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
table.docs th, table.docs td {
  border: 1px solid #dbe7ef;
  padding: 8px 12px;
  text-align: left;
}
table.docs th { background: var(--sky); color: var(--blue-dark); }

.footer {
  border-top: 1px solid #d9e6ef;
  padding: 18px 20px 26px;
  text-align: center;
  color: var(--ink-soft);
  font-size: 13px;
  background: rgba(255, 255, 255, 0.6);
}
.footer a { color: var(--ink-soft); }

/* ===== 提示浮层 ===== */
#toast {
  position: fixed;
  left: 50%;
  bottom: 42px;
  transform: translateX(-50%) translateY(20px);
  background: rgba(34, 49, 63, 0.95);
  color: #fff;
  padding: 10px 22px;
  border-radius: 24px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 99;
  max-width: 86vw;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===== 档案纸主题（OBS 档案 / 最终还原） ===== */
body.paper {
  background: #d9cdb4;
  color: var(--paper-ink);
}
body.paper .site-header {
  background: rgba(250, 246, 235, 0.95);
  border-bottom-color: #c9bb9c;
}
body.paper .doc {
  background: var(--paper);
  border: 1px solid #cdbd97;
  border-radius: 6px;
  padding: 34px 40px;
  box-shadow: 0 4px 18px rgba(90, 70, 40, 0.22);
  position: relative;
  max-width: 860px;
  margin: 0 auto 22px;
}
body.paper .doc::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent 0px,
    transparent 27px,
    rgba(160, 130, 80, 0.05) 27px,
    rgba(160, 130, 80, 0.05) 28px
  );
  pointer-events: none;
}
body.paper .doc .doc-inner { position: relative; }
body.paper .doc h1 {
  font-size: 24px;
  margin: 0 0 6px;
  letter-spacing: 2px;
}
body.paper .doc .meta {
  font-size: 13px;
  color: #6d5f47;
  border-bottom: 1px dashed #b9a87f;
  padding-bottom: 10px;
  margin-bottom: 18px;
}
.obs-tag {
  display: inline-block;
  border: 1px solid var(--red);
  color: var(--red);
  border-radius: 4px;
  padding: 1px 10px;
  font-size: 12px;
  letter-spacing: 1px;
  margin-right: 8px;
  vertical-align: middle;
}
.doc p, .doc li { font-size: 15px; }
.seal {
  display: inline-block;
  border: 2px solid var(--red);
  color: var(--red);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  letter-spacing: 3px;
  opacity: 0.75;
  transform: rotate(-4deg);
}
.annot {
  font-size: 12.5px;
  color: #7c6c50;
  border-top: 1px dashed #b9a87f;
  margin-top: 24px;
  padding-top: 10px;
}

/* ===== 暗黑档案室主题（后台） ===== */
body.archive {
  background: #0d1117;
  color: #c9d4df;
}
body.archive .site-header {
  background: rgba(13, 17, 23, 0.95);
  border-bottom-color: #1f2937;
}
body.archive .logo { color: #e3e8ee; }
body.archive .logo .logo-sub { color: #7d8a99; }
body.archive .site-header nav a { color: #93a2b3; }
body.archive .search-form input {
  background: #161d27;
  border-color: #2a3644;
  color: #e3e8ee;
}
body.archive .card {
  background: #131a24;
  border-color: #263241;
  box-shadow: none;
}
body.archive .card h2, body.archive .card h3 { color: #9fc3e8; border-left-color: #3f7fae; }
body.archive .tile { background: #161f2b; border-color: #2a3644; }
body.archive .tile h4 { color: #9fc3e8; }
body.archive .tile p { color: #8b99a8; }
body.archive .muted { color: #7d8a99; }
body.archive .footer {
  border-top-color: #1f2937;
  background: rgba(13, 17, 23, 0.6);
  color: #7d8a99;
}
.progress-bar {
  height: 8px;
  background: #1f2937;
  border-radius: 6px;
  overflow: hidden;
  margin: 10px 0 4px;
}
.progress-bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #3f7fae, #6bb3e8);
  transition: width 0.4s ease;
}
.archive-list { list-style: none; padding: 0; margin: 8px 0; }
.archive-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border: 1px solid #263241;
  border-radius: 8px;
  margin-bottom: 8px;
  background: #161f2b;
}
.archive-list li .no { color: #3f7fae; font-family: Consolas, monospace; width: 74px; flex: none; }
.archive-list li .name { flex: 1; }
.archive-list li a { color: #8fc3ea; text-decoration: none; }
.archive-list li a:hover { text-decoration: underline; }
.archive-list li.locked .name {
  color: #55657a;
  letter-spacing: 1px;
}
.archive-list li .st { font-size: 12px; color: #5f7387; }
.locked-tag {
  display: inline-block;
  background: #2a3644;
  color: #9aa9b8;
  font-size: 12px;
  padding: 1px 10px;
  border-radius: 10px;
}
.btn {
  display: inline-block;
  border: 0;
  border-radius: 8px;
  background: #2f7fb8;
  color: #fff;
  padding: 10px 22px;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: #1f5a86; }
.btn.blocked { background: #3a4654; color: #8b99a8; cursor: not-allowed; }
input.field {
  border: 1px solid #263241;
  background: #161d27;
  color: #e3e8ee;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 16px;
  width: 240px;
  letter-spacing: 2px;
}

/* ===== 真结局夜雨主题 ===== */
body.true {
  background: linear-gradient(180deg, #050a14 0%, #0b1526 60%, #13233a 100%);
  color: #dbe7f3;
  overflow-x: hidden;
}
body.true .site-header {
  background: rgba(5, 10, 20, 0.85);
  border-bottom-color: #1c3350;
}
body.true .logo { color: #cfdfee; }
body.true .logo .logo-sub { color: #7d93ad; }
body.true .site-header nav a { color: #93a7bd; }
body.true .search-form input {
  background: rgba(13, 24, 41, 0.9);
  border-color: #27405f;
  color: #e6f0f9;
}
body.true .card {
  background: rgba(10, 20, 36, 0.72);
  border-color: #223d5d;
  box-shadow: none;
}
body.true .card h2 { color: #aac6e4; border-left-color: #6f9fd0; }
body.true .muted { color: #8398b0; }
body.true .footer { border-top-color: #1c3350; color: #6f86a0; background: transparent; }
.rain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(120deg, transparent 0 46%, rgba(180, 210, 240, 0.08) 47% 48%, transparent 49%),
    linear-gradient(240deg, transparent 0 46%, rgba(180, 210, 240, 0.08) 47% 48%, transparent 49%);
  background-size: 220px 260px;
  animation: rain-move 0.9s linear infinite;
  opacity: 0.65;
}
@keyframes rain-move {
  from { background-position: 0 0, 0 0; }
  to { background-position: -60px 260px, 60px 260px; }
}
.ending-quote {
  font-size: 20px;
  text-align: center;
  letter-spacing: 3px;
  color: #e8d9a8;
  margin: 30px 0 10px;
  line-height: 2;
}

/* ===== 响应式 ===== */
@media (max-width: 720px) {
  .site-header .wrap { gap: 10px; }
  .search-form { margin-left: 0; width: 100%; }
  .search-form input { flex: 1; width: auto; }
  .hero { padding: 30px 22px; }
  .hero h1 { font-size: 24px; }
  .doc { padding: 24px 20px; }
}