:root {
  --qz-blue: #0d8ddb;
  --qz-blue-d: #0a6fb0;
  --txt: #2c2c2c;
  --gray: #9aa3ab;
  --line: #ececec;
  --bg: #eef2f5;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--txt);
  font-size: 15px;
}

/* 顶栏 */
.topbar {
  background: linear-gradient(120deg, #1a9be0, #0a6fb0 70%, #074e7d);
  color: #fff; box-shadow: 0 2px 10px rgba(0,0,0,.12);
}
.topbar-inner {
  max-width: 720px; margin: 0 auto; padding: 16px 16px 10px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.brand { font-size: 20px; font-weight: 700; display: flex; align-items: baseline; gap: 10px; }
.brand-sub { font-size: 12px; font-weight: 400; opacity: .85; }
.search { margin-left: auto; display: flex; }
.search-input {
  border: none; border-radius: 16px 0 0 16px; padding: 8px 14px; width: 200px;
  font-size: 14px; outline: none; max-width: 46vw;
}
.search-btn {
  border: none; border-radius: 0 16px 16px 0; padding: 8px 16px; cursor: pointer;
  background: #074e7d; color: #fff; font-size: 14px;
}
.search-btn:hover { background: #06405f; }
.chips { max-width: 720px; margin: 0 auto; padding: 0 16px 14px; display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  font-size: 13px; color: #fff; text-decoration: none;
  background: rgba(255,255,255,.18); padding: 4px 12px; border-radius: 14px;
}
.chip.on { background: #fff; color: var(--qz-blue-d); font-weight: 600; }
.chip:hover { background: rgba(255,255,255,.32); }
.chip.on:hover { background: #fff; }

.searchnote { color: var(--gray); font-size: 13px; margin: 4px 4px 14px; }
.searchnote a { color: var(--qz-blue-d); }

/* 平台徽标 */
.badge { font-size: 11px; padding: 1px 8px; border-radius: 10px; background: #eef4f9; color: #4a6b85; }
.badge-qzone { background: #fff1d6; color: #c47f00; }
.badge-weibo { background: #ffeaea; color: #d4453f; }
.badge-zhihu { background: #e9f1ff; color: #1772d6; }
.card-avatar.ph {
  display: flex; align-items: center; justify-content: center;
  color: #98a6b3; font-weight: 700; font-size: 18px;
}

/* 信息流 */
.feed { max-width: 720px; margin: 18px auto; padding: 0 14px; }
.empty {
  background: #fff; border-radius: 10px; padding: 40px; text-align: center;
  color: var(--gray);
}
.card-link { text-decoration: none; color: inherit; display: block; }
.card {
  background: #fff; border-radius: 10px; padding: 16px;
  margin-bottom: 14px; display: flex; gap: 12px;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
  transition: box-shadow .15s, transform .15s;
}
.card-link:hover .card { box-shadow: 0 4px 16px rgba(13,141,219,.16); transform: translateY(-1px); }
.card.is-deleted { opacity: .7; }
.card-avatar { width: 44px; height: 44px; border-radius: 8px; flex: none; background: #f0f0f0; }
.card-main { flex: 1; min-width: 0; }
.card-head { display: flex; align-items: center; gap: 8px; }
.card-nick { color: var(--qz-blue-d); font-weight: 600; }
.tag { font-size: 11px; padding: 1px 7px; border-radius: 10px; }
.tag-edit { background: #fff3e0; color: #d98000; }
.tag-del { background: #fdecec; color: #d64545; }

.card-text { margin: 8px 0; line-height: 1.7; word-break: break-word; white-space: normal; }
.forward {
  background: #f5f7f9; border-left: 3px solid #d4dde4;
  padding: 8px 12px; border-radius: 4px; color: #555; font-size: 14px; margin: 6px 0;
}

/* 九宫格 */
.grid { display: grid; gap: 6px; margin: 10px 0 4px; }
.grid.g1 { grid-template-columns: minmax(0, 60%); }
.grid.g2 { grid-template-columns: repeat(2, 1fr); }
.grid.g3 { grid-template-columns: repeat(3, 1fr); }
.cell {
  display: block; padding-top: 100%; background-size: cover;
  background-position: center; background-color: #f0f0f0; border-radius: 6px;
}
.grid.g1 .cell { padding-top: 66%; }

.card-foot {
  display: flex; align-items: center; gap: 14px;
  margin-top: 10px; font-size: 12px; color: var(--gray);
}
.goto { margin-left: auto; color: var(--qz-blue); }

.pager { display: flex; justify-content: center; align-items: center; gap: 18px; padding: 10px 0 30px; }
.pager a { color: var(--qz-blue-d); text-decoration: none; padding: 6px 14px; background: #fff; border-radius: 16px; }
.pager .pg { color: var(--gray); font-size: 13px; }

.foot { text-align: center; color: var(--gray); font-size: 12px; padding: 0 20px 30px; line-height: 1.6; }

@media (max-width: 560px) {
  .nick { font-size: 20px; }
  .avatar { width: 64px; height: 64px; }
}

/* 顶栏用户/退出 */
.userbox { color: #fff; font-size: 13px; opacity: .95; white-space: nowrap; }
.userbox a { color: #fff; text-decoration: underline; }

/* 登录 / 注册页 */
.authpage {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1a9be0, #0a6fb0 70%, #074e7d);
}
.authcard {
  background: #fff; width: 340px; max-width: 90vw; border-radius: 14px;
  padding: 32px 28px; box-shadow: 0 10px 40px rgba(0,0,0,.22);
}
.authbrand { font-size: 24px; font-weight: 700; color: #0a6fb0; text-align: center; }
.authsub { text-align: center; color: #9aa3ab; font-size: 13px; margin: 6px 0 20px; }
.autherr {
  background: #fdecec; color: #d64545; border-radius: 8px;
  padding: 9px 12px; font-size: 13px; margin-bottom: 14px; text-align: center;
}
.authinput {
  display: block; width: 100%; box-sizing: border-box; margin-bottom: 12px;
  padding: 11px 14px; border: 1px solid #e0e6eb; border-radius: 9px; font-size: 15px; outline: none;
}
.authinput:focus { border-color: #1a9be0; }
.authbtn {
  width: 100%; padding: 11px; border: none; border-radius: 9px; cursor: pointer;
  background: #0d8ddb; color: #fff; font-size: 16px; font-weight: 600; margin-top: 4px;
}
.authbtn:hover { background: #0a6fb0; }
.authalt { text-align: center; font-size: 13px; color: #9aa3ab; margin-top: 18px; }
.authalt a { color: #0d8ddb; }