:root {
  --zhi: #f2fbfc;
  --mo: #073b4c;
  --mo-ci: #2b5d6c;
  --qing: #06a3b7;
  --qing-zi: #04707f;
  --qing-dan: #e2f4f7;
  --huang: #ffd166;
  --xian: #c5e7ec;
  --mian: #ffffff;
  --r-da: 16px;
  --r-xiao: 10px;
  --zi-la: Tahoma, "Lucida Sans", "Segoe UI", sans-serif;
  --zi-zh: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --kuan: 1120px;
}

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

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--zhi);
  color: var(--mo);
  font-family: var(--zi-zh);
  font-size: 17px;
  line-height: 1.8;
  overflow-wrap: break-word;
}

img { max-width: 100%; height: auto; }

a { color: var(--qing-zi); text-underline-offset: 3px; }
a:hover { color: var(--mo); }

:focus-visible { outline: 3px solid var(--qing-zi); outline-offset: 2px; border-radius: 4px; }

code, kbd { font-family: var(--zi-la); }

.az-tiaoguo {
  position: absolute; left: 12px; top: -60px; z-index: 10;
  background: var(--mo); color: #fff; padding: 10px 14px; border-radius: var(--r-xiao);
}
.az-tiaoguo:focus { top: 10px; }

/* 页头 */
.tou { border-bottom: 1px solid var(--xian); background: var(--zhi); }
.tou-nei {
  max-width: var(--kuan); margin: 0 auto; padding: 8px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.tou-biao, .jiao-biao { display: inline-flex; align-items: center; min-height: 44px; color: var(--mo); }
.zibiao { display: block; }
.az-daohang ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
.az-daohang a {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 12px;
  color: var(--mo); text-decoration: none; font-size: 15px; border-bottom: 3px solid transparent;
}
.az-daohang a:hover { color: var(--qing-zi); }
.az-daohang a[aria-current="page"] { border-bottom-color: var(--qing); font-weight: 700; }

main { display: block; }

/* 首页首屏：左边标题与推荐，右边竖向时间线 */
.shou {
  max-width: var(--kuan); margin: 0 auto; padding: 36px 24px 40px;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 470px);
  grid-template-areas: "biao xian" "dao xian" "tj xian";
  grid-template-rows: auto auto 1fr;
  column-gap: 64px;
}
.shou-h1 {
  grid-area: biao; margin: 8px 0 16px; font-size: 44px; line-height: 1.25; font-weight: 800; letter-spacing: 0;
}
.shou-dao { grid-area: dao; margin: 0 0 24px; font-size: 18px; color: var(--mo-ci); max-width: 30em; }
.az-tuijian {
  grid-area: tj; align-self: start;
  background: var(--mian); border: 1px solid var(--xian); border-left: 5px solid var(--qing);
  border-radius: var(--r-da); padding: 18px 22px;
}
.tj-tou { margin: 0; font-size: 14px; color: var(--qing-zi); font-weight: 700; }
.tj-ming { margin: 4px 0 6px; font-size: 20px; line-height: 1.5; font-weight: 700; }
.tj-ming a { color: var(--mo); }
.tj-ming a:hover { color: var(--qing-zi); }
.tj-shuo { margin: 0; font-size: 15px; color: var(--mo-ci); }

.xian { grid-area: xian; list-style: none; margin: 0; padding: 0; }
.jd { position: relative; display: grid; grid-template-columns: 44px minmax(0, 1fr); column-gap: 16px; padding-bottom: 18px; }
.jd:not(:last-child)::after {
  content: ""; position: absolute; left: 20px; top: 44px; bottom: 0; width: 4px; background: var(--qing); border-radius: 2px;
}
.jd-hao {
  width: 44px; height: 44px; border-radius: 50%; border: 3px solid var(--mo); background: var(--mian);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--zi-la); font-weight: 700; font-size: 18px;
}
.jd-ma .jd-hao { background: var(--huang); }
.jd-nei { padding-top: 6px; min-width: 0; }
.jd-ming { margin: 0; font-size: 18px; font-weight: 800; line-height: 1.4; }
.jd-shuo { margin: 2px 0 0; font-size: 15px; color: var(--mo-ci); line-height: 1.6; }

/* 邀请码卡 */
.mapian {
  margin-top: 12px; background: var(--mian); border: 2px solid var(--mo); border-radius: var(--r-da);
  padding: 16px 18px;
}
.mp-ming { margin: 0; font-size: 14px; font-weight: 700; color: var(--mo-ci); }
.mp-hang { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin: 4px 0 10px; }
.mapian .mp-ma {
  font-size: 28px; font-weight: 700; letter-spacing: 2px; line-height: 1.3;
  background: var(--huang); color: var(--mo); padding: 2px 12px; border-radius: var(--r-xiao);
}
.mp-fuzhi {
  min-height: 44px; min-width: 88px; padding: 0 18px; border-radius: var(--r-xiao);
  border: 2px solid var(--mo); background: var(--mian); color: var(--mo);
  font: inherit; font-size: 16px; font-weight: 700; cursor: pointer;
}
.mp-fuzhi:hover { background: var(--qing-dan); }
.mp-fuzhi.yifuzhi { background: var(--mo); color: #fff; }
.mp-li { margin: 0; font-size: 15px; line-height: 1.6; }
.mp-xing, .mp-zhu sup { color: var(--qing-zi); font-weight: 700; }
.mp-zhu { margin: 6px 0 0; font-size: 13px; line-height: 1.6; color: var(--mo-ci); }
.mp-qu { margin: 14px 0 6px; }
.mp-anniu {
  display: inline-flex; align-items: center; min-height: 48px; padding: 0 22px; border-radius: var(--r-xiao);
  background: var(--mo); color: #fff; text-decoration: none; font-weight: 700;
}
.mp-anniu:hover { background: var(--qing-zi); color: #fff; }
.mp-pilu { margin: 0; font-size: 13px; line-height: 1.6; color: var(--mo-ci); }

/* 首页下半部分 */
.shou-xia { max-width: var(--kuan); margin: 0 auto; padding: 8px 24px 56px; }
.shou-xia > h2, .shou-xia section > h2 {
  font-size: 26px; line-height: 1.4; margin: 44px 0 12px; padding-top: 28px; border-top: 1px solid var(--xian);
}
.shou-xia > p, .shou-xia > ul { max-width: 40em; }
.zhunbei-list { list-style: none; padding: 0; }
.zhunbei-list li { position: relative; padding-left: 28px; margin: 10px 0; }
.zhunbei-list li::before {
  content: ""; position: absolute; left: 2px; top: 0.6em; width: 12px; height: 12px;
  border: 3px solid var(--qing); border-radius: 50%;
}
.shou-quan { margin: 16px 0 0; }

.wen-list { list-style: none; margin: 0; padding: 0; max-width: 46em; }
.wen-list li { background: var(--mian); border: 1px solid var(--xian); border-radius: var(--r-da); padding: 18px 22px; margin: 0 0 14px; }
.wl-ming { font-size: 19px; font-weight: 700; line-height: 1.5; color: var(--mo); }
.wl-ming:hover { color: var(--qing-zi); }
.wl-shuo { margin: 6px 0 4px; font-size: 15px; color: var(--mo-ci); }
.wl-ri { margin: 0; font-size: 13px; color: var(--mo-ci); font-family: var(--zi-la); }

/* 列表页 / 标签页 */
.lb { max-width: var(--kuan); margin: 0 auto; padding: 28px 24px 56px; }
.lb-tou h1 { font-size: 44px; line-height: 1.25; margin: 8px 0 12px; }
.lb-ye { font-size: 0.5em; margin-left: 12px; color: var(--mo-ci); font-weight: 400; }
.lb-dao { max-width: 40em; color: var(--mo-ci); }
.lb-shu { font-size: 14px; color: var(--mo-ci); margin: 8px 0 20px; }
.lb-tongyi { font-size: 14px; color: var(--mo-ci); }
.fanye { display: flex; gap: 20px; align-items: center; margin-top: 20px; }
.fanye a { min-height: 44px; display: inline-flex; align-items: center; }
.fz-list { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.fz-list a { display: inline-flex; min-height: 44px; align-items: center; padding: 0 14px; border: 1px solid var(--xian); border-radius: var(--r-xiao); background: var(--mian); }

.az-mianbao { font-size: 14px; color: var(--mo-ci); display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.az-mianbao a { color: var(--mo-ci); display: inline-flex; align-items: center; min-height: 32px; }

/* 文章页 */
.az-wen { max-width: 1040px; margin: 0 auto; padding: 24px 24px 56px; }
.az-wen-tou h1 { font-size: 44px; line-height: 1.3; margin: 10px 0 14px; max-width: 22em; }
.wen-xinxi { display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: 14px; color: var(--mo-ci); margin: 0 0 22px; }
.az-fengmian { margin: 0 0 28px; }
.az-fengmian img { display: block; width: 100%; border-radius: var(--r-da); border: 1px solid var(--xian); }
.az-fengmian figcaption, .bz-tu figcaption, .zw-tu figcaption { font-size: 13.5px; line-height: 1.6; color: var(--mo-ci); margin-top: 8px; }

.mulu {
  max-width: 40em; background: var(--mian); border: 1px solid var(--xian); border-left: 5px solid var(--qing);
  border-radius: var(--r-da); padding: 16px 22px 10px; margin: 0 0 36px;
}
.mulu-tou { margin: 0 0 6px; font-weight: 700; font-size: 15px; }
.mulu ol { list-style: none; counter-reset: mu; margin: 0; padding: 0; }
.mulu li { counter-increment: mu; position: relative; padding-left: 38px; margin: 2px 0; }
.mulu li::before {
  content: counter(mu); position: absolute; left: 0; top: 8px; width: 26px; height: 26px; border-radius: 50%;
  border: 2px solid var(--mo); font-family: var(--zi-la); font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; line-height: 1;
}
.mulu a { display: inline-block; padding: 8px 0; line-height: 1.5; color: var(--mo); text-decoration: none; }
.mulu a:hover { color: var(--qing-zi); text-decoration: underline; }

.az-wen-ti > :not(.buzhou):not(.az-biaowai):not(.mapian-wai), .az-wenda, .az-wen-wei { max-width: 38em; }
.az-wen-ti h2, .az-wenda h2 {
  font-size: 27px; line-height: 1.45; margin: 56px 0 14px; padding-top: 28px; border-top: 1px solid var(--xian);
  scroll-margin-top: 16px;
}
.az-wen-ti h3 { font-size: 20px; line-height: 1.5; margin: 32px 0 8px; }
.az-wen-ti p, .az-wen-ti li { margin: 0 0 14px; }
.az-wen-ti ul, .az-wen-ti ol { padding-left: 1.4em; }
.az-wen-ti li { margin-bottom: 8px; }
.az-wen-ti strong { color: var(--mo); }
.az-wen-ti code { background: var(--qing-dan); padding: 1px 6px; border-radius: 6px; font-size: 0.92em; overflow-wrap: anywhere; }
.az-wen-ti blockquote { margin: 18px 0; padding: 10px 18px; border-left: 4px solid var(--huang); background: var(--mian); border-radius: 0 var(--r-xiao) var(--r-xiao) 0; }

.tingxia {
  background: #fff7e0; border: 1px solid #f0d58e; border-radius: var(--r-xiao); padding: 14px 18px;
}

.buzhou {
  display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 28px; align-items: start;
  background: var(--mian); border: 1px solid var(--xian); border-radius: var(--r-da);
  padding: 22px 24px; margin: 24px 0 28px;
}
.bz-xu { margin: 0 0 4px; font-size: 14px; font-weight: 700; color: var(--qing-zi); }
.bz-wen > :last-child { margin-bottom: 0; }
.bz-tu { margin: 0; }
.bz-tu img, .zw-tu img { display: block; border-radius: var(--r-xiao); border: 1px solid var(--xian); }
.zw-tu { margin: 20px 0; }

.mapian-wai { margin: 28px 0 32px; max-width: 34em; }
.mapian-wai .mapian { margin: 0; box-shadow: 6px 6px 0 var(--huang); }

.az-biaowai { overflow-x: auto; margin: 20px 0 26px; border: 1px solid var(--xian); border-radius: var(--r-xiao); background: var(--mian); max-width: 46em; }
.az-biaowai table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 15px; line-height: 1.65; }
.az-biaowai th, .az-biaowai td { text-align: left; vertical-align: top; padding: 10px 14px; border-bottom: 1px solid var(--xian); }
.az-biaowai th { background: var(--qing-dan); font-weight: 700; }
.az-biaowai tr:last-child td { border-bottom: 0; }

.az-wenda .wd { margin: 0 0 18px; }
.az-wenda h3 { font-size: 18px; margin: 20px 0 6px; line-height: 1.5; }
.az-wenda p { margin: 0; }

.az-wen-wei { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--xian); display: grid; gap: 18px; }
.qu-biao { margin: 0 0 6px; font-weight: 700; font-size: 15px; }
.qu-fenzu ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.qu-fenzu span, .qu-fenzu a {
  display: inline-flex; align-items: center; min-height: 36px; padding: 0 12px; font-size: 14px;
  border: 1px solid var(--xian); border-radius: var(--r-xiao); background: var(--mian); color: var(--mo);
}
.qu-xia ul { margin: 0; padding-left: 1.2em; }
.qu-xia li { margin: 4px 0; }

/* 站务页 */
.zw { max-width: 820px; margin: 0 auto; padding: 24px 24px 56px; }
.zw h1 { font-size: 44px; line-height: 1.3; margin: 10px 0 8px; }
.zw-ri { font-size: 14px; color: var(--mo-ci); margin: 0 0 24px; }
.zw-ti { max-width: 38em; }
.zw-ti h2 { font-size: 23px; margin: 36px 0 10px; line-height: 1.45; }
.zw-ti p, .zw-ti li { margin: 0 0 12px; }

/* 查找页 */
.az-zhao { max-width: 820px; margin: 0 auto; padding: 24px 24px 56px; }
.az-zhao h1 { font-size: 44px; line-height: 1.3; margin: 10px 0 8px; }
.zhao-biao label { display: block; font-weight: 700; margin: 18px 0 6px; }
.zhao-hang { display: flex; gap: 10px; }
.zhao-hang input {
  flex: 1; min-width: 0; min-height: 48px; padding: 0 14px; font: inherit; font-size: 16px;
  border: 2px solid var(--mo); border-radius: var(--r-xiao); background: var(--mian); color: var(--mo);
}
.zhao-hang button {
  min-height: 48px; padding: 0 20px; font: inherit; font-weight: 700; border: 0; border-radius: var(--r-xiao);
  background: var(--mo); color: #fff; cursor: pointer;
}
.zhao-zhuang { color: var(--mo-ci); font-size: 15px; min-height: 1.8em; }
.zhao-jieguo { list-style: none; padding: 0; margin: 0; }
.zhao-jieguo li { background: var(--mian); border: 1px solid var(--xian); border-radius: var(--r-da); padding: 14px 18px; margin: 0 0 12px; }
.zhao-jieguo a { font-weight: 700; font-size: 18px; }
.zhao-jieguo p { margin: 4px 0 0; font-size: 15px; color: var(--mo-ci); }

/* 404 */
.cuo { max-width: 760px; margin: 0 auto; padding: 48px 24px 72px; }
.cuo-hao { font-family: var(--zi-la); font-size: 64px; font-weight: 700; color: var(--qing-zi); margin: 0; line-height: 1; }
.cuo h1 { font-size: 36px; margin: 12px 0; }
.cuo li { margin: 8px 0; }

/* 页脚 */
.jiao { background: var(--qing-dan); border-top: 1px solid var(--xian); margin-top: 24px; }
.jiao-nei {
  max-width: var(--kuan); margin: 0 auto; padding: 32px 24px 12px;
  display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 32px;
}
.jiao-zuo p { font-size: 14px; line-height: 1.75; margin: 8px 0; max-width: 36em; }
.jiao-you ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 16px; }
.jiao-you a { display: inline-flex; align-items: center; min-height: 44px; font-size: 15px; color: var(--mo); }
.jiao-rss { margin: 6px 0 0; }
.jiao-rss a { color: var(--qing-zi); }
.jiao-di { max-width: var(--kuan); margin: 0 auto; padding: 8px 24px 24px; font-size: 13px; color: var(--mo-ci); font-family: var(--zi-la); }

@media (max-width: 860px) {
  .shou { grid-template-columns: minmax(0, 1fr); grid-template-areas: "biao" "xian" "tj" "dao"; column-gap: 0; padding-top: 18px; }
  .shou-dao { margin: 18px 0 0; }
  .buzhou { grid-template-columns: minmax(0, 1fr); }
  .bz-tu { max-width: 420px; }
  .jiao-nei { grid-template-columns: minmax(0, 1fr); gap: 8px; }
}

@media (max-width: 600px) {
  body { font-size: 16px; line-height: 1.75; }
  .tou-nei { padding: 4px 12px 4px 16px; }
  .az-daohang a { padding: 0 8px; }
  .shou { padding: 14px 16px 28px; }
  .shou-h1 { font-size: 30px; margin: 0 0 12px; }
  .shou-dao { font-size: 16px; }
  .jd { grid-template-columns: 36px minmax(0, 1fr); column-gap: 12px; padding-bottom: 10px; }
  .jd-hao { width: 36px; height: 36px; font-size: 16px; }
  .jd:not(:last-child)::after { left: 16px; top: 36px; }
  .jd-nei { padding-top: 2px; }
  .jd-ming { font-size: 16px; }
  .jd-shuo { font-size: 14px; margin-top: 0; }
  .mapian { padding: 12px 14px; margin-top: 8px; }
  .mp-hang { margin: 2px 0 6px; }
  .mapian .mp-ma { font-size: 24px; }
  .mp-li { font-size: 14.5px; }
  .az-tuijian { padding: 14px 16px; }
  .tj-ming { font-size: 17px; margin: 2px 0 4px; }
  .tj-shuo { font-size: 14px; }
  .shou-xia, .lb, .az-wen, .zw, .az-zhao { padding-left: 16px; padding-right: 16px; }
  .lb-tou h1, .az-wen-tou h1, .zw h1, .az-zhao h1 { font-size: 30px; }
  .az-wen-ti h2, .az-wenda h2 { font-size: 22px; margin-top: 44px; }
  .az-wen-ti h3 { font-size: 18px; }
  .buzhou { padding: 16px; gap: 16px; }
  .mapian-wai .mapian { box-shadow: 4px 4px 0 var(--huang); }
  .shou-xia > h2, .shou-xia section > h2 { font-size: 22px; }
  .jiao-you ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

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