* { box-sizing: border-box; }
body {
  margin: 0;
  background: linear-gradient(180deg, #f6fbff 0%, #eef4fb 100%);
  color: #29586d;
  font-family: Arial, SimSun, "宋体", sans-serif;
  font-size: 14px;
}
a { color: #1b76aa; text-decoration: none; }
a:hover { color: #0e5d8e; text-decoration: none; }

.topbar {
  height: 34px;
  line-height: 34px;
  background: rgba(255,255,255,.8);
  border-bottom: 1px solid #d9e8f3;
  backdrop-filter: blur(8px);
}
.topbar-in {
  width: 1240px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  color: #5d7f93;
}
.topbar a { margin-left: 14px; font-weight: 600; }

.page { width: 1240px; margin: 0 auto; padding: 16px 0 28px; }

.head {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: center;
  padding: 26px 32px;
  background: linear-gradient(135deg, #f4fbff 0%, #dff2ff 45%, #eaf7ff 100%);
  border: 1px solid #d7ebf8;
  border-radius: 22px;
  box-shadow: 0 12px 30px rgba(60, 114, 150, .10);
}
.logo {
  display: block;
  position: relative;
  padding-left: 8px;
}
.logo strong {
  display: block;
  font-size: 58px;
  line-height: 1;
  color: #1178bf;
  font-weight: 800;
  letter-spacing: 1px;
  text-shadow: 0 2px 0 rgba(255,255,255,.9);
}
.logo span {
  display: inline-block;
  margin-top: 8px;
  padding: 3px 12px;
  border-radius: 999px;
  background: rgba(17,120,191,.08);
  color: #146fa8;
  font-size: 20px;
  font-weight: 700;
}
.head-search p {
  margin: 0 0 12px;
  color: #7390a0;
  font-size: 16px;
}
.head-search form { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.head-search input[type="text"] {
  flex: 1 1 580px;
  width: auto;
  height: 54px;
  border: 1px solid #b7d1e0;
  border-radius: 14px;
  background: #fff;
  font-size: 21px;
  padding: 0 18px;
  box-shadow: inset 0 2px 6px rgba(26, 96, 138, .06);
}
.head-search button {
  height: 54px;
  padding: 0 28px;
  border: none;
  border-radius: 14px;
  background: linear-gradient(180deg, #37aaf0 0%, #0c73c3 100%);
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
  box-shadow: 0 12px 24px rgba(12,115,195,.28);
  cursor: pointer;
}
.search-types {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 4px;
}
.search-types label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  background: rgba(255,255,255,.72);
  border: 1px solid #d5e7f2;
  border-radius: 999px;
  color: #4f7186;
  line-height: 1;
}
.search-types input[type="radio"] {
  width: 14px !important;
  height: 14px !important;
  margin: 0;
}

.layout {
  display: grid;
  grid-template-columns: 900px 310px;
  gap: 20px;
  margin-top: 18px;
}
.banner {
  display: block;
  height: 148px;
  margin: 0 0 18px;
  border-radius: 22px;
  background:
    radial-gradient(circle at 12% 20%, rgba(255,255,255,.22), transparent 30%),
    radial-gradient(circle at 85% 80%, rgba(255,255,255,.12), transparent 24%),
    linear-gradient(135deg, #35c4f2 0%, #188ed6 42%, #0b5eaf 100%);
  box-shadow: 0 18px 35px rgba(14, 101, 170, .22);
  overflow: hidden;
  position: relative;
}
.banner::before {
  content: "";
  position: absolute;
  left: -30px;
  top: -40px;
  width: 300px;
  height: 180px;
  background: rgba(255,255,255,.10);
  transform: rotate(-18deg);
}
.banner::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -50px;
  width: 280px;
  height: 150px;
  background: rgba(255,255,255,.10);
  transform: rotate(16deg);
}
.banner span {
  position: absolute;
  left: 240px;
  top: 43px;
  padding: 12px 26px;
  border-radius: 10px;
  background: rgba(255,255,255,.94);
  color: #176ea2;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: 8px;
  transform: rotate(-4deg);
  box-shadow: 0 8px 18px rgba(0,0,0,.14);
}

.homegrid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.panel, .sidebox {
  background: rgba(255,255,255,.92);
  border: 1px solid #e0edf6;
  border-radius: 18px;
  box-shadow: 0 10px 24px rgba(73, 115, 147, .08);
  overflow: hidden;
  margin-bottom: 18px;
}
.panel h2, .sidebox h3 {
  margin: 0;
  padding: 14px 18px;
  font-size: 20px;
  color: #136e9f;
  font-weight: 800;
  background: linear-gradient(90deg, #e9f6ff 0%, #f0ecff 45%, #ffffff 100%);
  border-bottom: 1px solid #e0edf6;
}
.sidebox h3 {
  background: linear-gradient(90deg, #e8f9ff 0%, #f2f8ff 100%);
}
.topic { min-height: 346px; }
.topic ul {
  list-style: none;
  margin: 0;
  padding: 10px 16px 14px;
}
.topic li {
  height: 35px;
  line-height: 35px;
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  align-items: center;
  border-bottom: 1px dashed #ebf1f6;
  overflow: hidden;
  white-space: nowrap;
}
.topic li:last-child { border-bottom: none; }
.topic a { overflow: hidden; text-overflow: ellipsis; }
.rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-top: 0;
  border-radius: 8px;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}
.r1 { background: linear-gradient(180deg, #ff5b5b, #dc1f1f); }
.r2 { background: linear-gradient(180deg, #ffb347, #ff8f00); }
.r3 { background: linear-gradient(180deg, #ffd95f, #ffbb00); color: #8a5a00; }
.r4 { background: linear-gradient(180deg, #46d77a, #12b94d); }

.boards .boardrow {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 4px;
  padding: 14px 16px;
  border-bottom: 1px dashed #e8eef3;
}
.boards .boardrow:last-child { border-bottom: none; }
.boardrow b {
  color: #357aa2;
  font-size: 15px;
}
.boardrow a {
  display: inline-block;
  margin: 0 18px 8px 0;
  padding: 7px 12px;
  border-radius: 999px;
  background: #f5fbff;
  color: #4a6f87;
  border: 1px solid #e3eef6;
}
.boardrow a:hover {
  background: #ebf6ff;
  color: #146fa8;
}

.sidebox { background: rgba(255,255,255,.95); }
.sidebox p { margin: 0; padding: 12px 16px; line-height: 1.75; color: #5d7381; border-bottom: 1px dashed #e8eef3; }
.sidebox p:last-child { border-bottom: none; }
.login-mini { padding: 14px 16px 16px; }
.login-mini label { display: block; margin-bottom: 12px; color: #506878; font-weight: 600; }
.login-mini input {
  width: 100%;
  height: 40px;
  border: 1px solid #c8dbe7;
  border-radius: 10px;
  padding: 0 12px;
  background: #fbfdff;
}
.login-mini p { padding: 0; margin-top: 2px; border: 0; }

button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 16px;
  border: 1px solid #b8d7e8;
  border-radius: 10px;
  background: linear-gradient(180deg, #ffffff 0%, #e7f6ff 100%);
  color: #1b709f;
  font-weight: 700;
  cursor: pointer;
  transition: .18s ease;
}
button:hover, .btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(20, 111, 168, .12);
}
.tools, .desc { padding: 14px 16px; color: #68818f; line-height: 1.8; }
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding: 0 16px 16px;
}
.cards article {
  min-height: 102px;
  border: 1px solid #e5eff6;
  border-radius: 14px;
  background: linear-gradient(180deg, #fff 0%, #fbfeff 100%);
  padding: 14px;
}
.cards h4 { margin: 0 0 8px; font-size: 16px; }
.cards p { margin: 0 0 8px; color: #68808e; line-height: 1.65; }

.form form, .admin-form { padding: 16px; }
.form label, .admin-form label { display: block; margin-bottom: 14px; color: #506878; font-weight: 600; }
.form input, .form textarea, .form select,
.admin-form input, .admin-form textarea, .admin-form select,
.bigsearch input, .reply textarea {
  display: block;
  width: 100%;
  margin-top: 7px;
  border: 1px solid #c9dce8;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 15px;
  background: #fbfdff;
}
.bigsearch {
  display: flex;
  gap: 10px;
  padding: 16px;
}
.bigsearch input { margin: 0; height: 42px; }

table, .admin-table {
  width: 100%;
  border-collapse: collapse;
  background: transparent;
}
th, td {
  padding: 11px 10px;
  border-bottom: 1px solid #ebf1f5;
  text-align: left;
  vertical-align: top;
}
th {
  color: #1976a6;
  background: #f4faff;
  font-weight: 700;
}
.tag {
  display: inline-block;
  margin-right: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid #bcdced;
  background: #eef8fd;
  color: #146b93;
  font-size: 12px;
}
.tag.red { border-color: #efc2c2; background: #fff1f1; color: #bc2a2a; }
.tag.ask { border-color: #edd28e; background: #fff9e0; color: #a77100; }
.meta { color: #7a8b96; font-size: 13px; padding: 0 16px; }
.post {
  display: grid;
  grid-template-columns: 150px 1fr;
  margin: 16px;
  border: 1px solid #e1ecf4;
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
}
.post .author {
  background: linear-gradient(180deg, #f3fbff 0%, #eef7fb 100%);
  border-right: 1px solid #e1ecf4;
  padding: 18px 10px;
  text-align: center;
}
.post > div:last-child { min-height: 110px; padding: 16px 18px; color: #33434d; line-height: 1.9; }
.ops {
  margin: 12px 16px;
  padding: 10px 12px;
  background: #fff9e8;
  border: 1px solid #f0ddb0;
  border-radius: 12px;
}
.reply { margin: 16px; padding-top: 14px; border-top: 1px solid #e8eef3; }
.reply textarea { margin: 0; }
.report { margin-top: 12px; }
.report button { min-height: 28px; font-size: 12px; padding: 0 10px; }
.mini { display: inline-block; margin: 0 12px 8px 0; }
.pager { text-align: center; margin: 18px 0; }
.pager a, .pager strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  margin: 0 4px;
  border-radius: 10px;
  border: 1px solid #d2e5f0;
  background: #fff;
}
.pager strong {
  background: linear-gradient(180deg, #35a8ef, #0c73c3);
  border-color: #0c73c3;
  color: #fff;
}
.flash {
  margin: 14px 0 0;
  padding: 12px 16px;
  border: 1px solid #d7ebf3;
  border-radius: 14px;
  background: #f7fcff;
}
.flash.ok { color: #236b2a; border-color: #c8e8cc; background: #f5fff6; }
.flash.err { color: #9b2020; border-color: #f0c3c3; background: #fff4f4; }
footer {
  margin: 24px 0 10px;
  padding-top: 18px;
  text-align: center;
  color: #7d92a0;
}
code { padding: 2px 6px; border: 1px solid #e0e4e8; border-radius: 6px; background: #f7f7f8; }

.admin-shell {
  width: 1240px;
  min-height: 720px;
  margin: 20px auto;
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 20px;
}
.admin-menu {
  background: linear-gradient(180deg, #12314a 0%, #0f4569 100%);
  border-radius: 22px;
  box-shadow: 0 18px 35px rgba(12, 58, 88, .22);
  overflow: hidden;
}
.admin-menu h1 {
  margin: 0;
  padding: 22px 18px;
  color: #fff;
  font-size: 22px;
  letter-spacing: 1px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.admin-menu a {
  display: block;
  padding: 14px 18px;
  color: rgba(255,255,255,.82);
  border-bottom: 1px solid rgba(255,255,255,.06);
  font-weight: 700;
}
.admin-menu a.on {
  background: linear-gradient(90deg, rgba(53,168,239,.25), rgba(255,255,255,.08));
  color: #fff;
  border-left: 4px solid #56c0ff;
  padding-left: 14px;
}
.admin-card {
  border: 1px solid #e0edf6;
  border-radius: 22px;
  background: rgba(255,255,255,.95);
  min-height: 600px;
  box-shadow: 0 16px 32px rgba(76, 114, 145, .10);
  overflow: hidden;
}
.admin-card h2 {
  margin: 0;
  padding: 16px 18px;
  font-size: 22px;
  color: #116c9e;
  background: linear-gradient(90deg, #eef8ff 0%, #ffffff 100%);
  border-bottom: 1px solid #e3eef6;
}
.admin-card > p { margin: 16px; color: #5f7685; }
.stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  padding: 16px;
}
.stats div {
  padding: 20px 8px;
  text-align: center;
  border: 1px solid #e1edf5;
  border-radius: 18px;
  background: linear-gradient(180deg, #ffffff 0%, #f7fbff 100%);
}
.stats b {
  display: block;
  color: #0f79ba;
  font-size: 30px;
}
.inline { display: inline; }

@media (max-width: 900px) {
  .topbar-in, .page, .admin-shell { width: auto; margin-left: 10px; margin-right: 10px; }
  .head, .layout, .homegrid, .admin-shell, .boards .boardrow, .post { display: block; }
  .head-search input[type="text"] { width: 100%; }
  .head-search button { width: 100%; }
  .search-types { flex-wrap: wrap; }
  .banner { height: 124px; }
  .banner span {
    left: 20px; right: 20px; top: 36px;
    text-align: center; font-size: 22px; letter-spacing: 4px;
  }
  .side, .admin-menu { margin-top: 14px; }
  .cards, .stats { grid-template-columns: 1fr; }
}