/* 日光看板 · WPS Office 安全下载引导站 */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --kb-ink: #1B1F2A;
  --kb-accent: #2F6FED;
  --kb-accent-soft: #E8F0FF;
  --kb-canvas: #F6F7FB;
  --kb-card: #FFFFFF;
  --kb-rail: #F8FAFE;
  --kb-ice: #EEF3FA;
  --kb-muted: #5C6475;
  --kb-line: #E4E8F0;
  --kb-ok: #2A9D6E;
  --kb-wait: #C9862A;
  --kb-shadow: 0 10px 28px rgba(27, 31, 42, 0.07);
  --kb-shadow-hover: 0 14px 34px rgba(47, 111, 237, 0.12);
}

html { scroll-behavior: auto; }

body.kb-body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--kb-canvas);
  color: var(--kb-ink);
  line-height: 1.85;
  font-size: 16px;
}

a { color: var(--kb-accent); text-decoration: none; }
a:hover { color: #1D54C9; }

.kb-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* —— 左侧图标轨 —— */
.kb-rail {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 50;
  width: 72px;
  height: 100vh;
  background: var(--kb-rail);
  border-right: 1px solid var(--kb-line);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 0 20px;
}

.kb-rail-logo {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--kb-accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  box-shadow: 0 8px 18px rgba(47, 111, 237, 0.28);
}

.kb-rail-logo:hover { filter: brightness(1.06); }

.kb-rail-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  align-items: center;
}

.kb-rail-nav a {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--kb-muted);
  background: transparent;
}

.kb-rail-nav a:hover {
  background: var(--kb-accent-soft);
  color: var(--kb-accent);
}

.kb-rail-nav a.is-on {
  background: var(--kb-accent);
  color: #fff;
}

.kb-app { margin-left: 72px; min-height: 100vh; }

/* —— 顶栏 —— */
.kb-top {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(248, 250, 254, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--kb-line);
}

.kb-top-inner {
  width: min(1120px, 92%);
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kb-brand {
  color: var(--kb-ink);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.2px;
}

.kb-brand:hover { color: var(--kb-accent); }

.kb-nav { display: flex; gap: 6px; }

.kb-nav a {
  color: var(--kb-muted);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14.5px;
  border: 1px solid transparent;
}

.kb-nav a:hover {
  color: var(--kb-accent);
  background: var(--kb-accent-soft);
}

.kb-nav a.is-on {
  color: #fff;
  background: var(--kb-accent);
  font-weight: 700;
}

.kb-wrap { width: min(1120px, 92%); margin: 0 auto; }

/* —— 英雄：状态看板 —— */
.kb-hero { padding: 36px 0 12px; }

.kb-board {
  background: var(--kb-card);
  border-radius: 18px;
  box-shadow: var(--kb-shadow);
  border: 1px solid #EEF1F7;
  overflow: hidden;
}

.kb-board-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 22px;
  background: var(--kb-ice);
  border-bottom: 1px solid var(--kb-line);
  font-size: 13px;
  color: var(--kb-muted);
  font-weight: 600;
}

.kb-board-bar b { color: var(--kb-ink); }

.kb-board-body { padding: 28px 28px 26px; }

.kb-board h1 {
  font-size: 32px;
  line-height: 1.35;
  font-weight: 800;
  max-width: 16em;
}

.kb-lead {
  margin-top: 14px;
  color: var(--kb-muted);
  font-size: 16.5px;
  max-width: 46em;
}

.kb-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.kb-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--kb-accent-soft);
  color: var(--kb-accent);
  font-size: 13px;
  font-weight: 600;
}

.kb-chip i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--kb-accent);
  display: inline-block;
}

.kb-chip.is-ok { background: #E7F7EF; color: var(--kb-ok); }
.kb-chip.is-ok i { background: var(--kb-ok); }
.kb-chip.is-wait { background: #FFF4E4; color: var(--kb-wait); }
.kb-chip.is-wait i { background: var(--kb-wait); }

.kb-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.kb-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 15px;
  border: 0;
  cursor: pointer;
}

.kb-btn-fill {
  background: var(--kb-accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(47, 111, 237, 0.25);
}

.kb-btn-fill:hover { background: #1D54C9; color: #fff; }

.kb-btn-ghost {
  background: #fff;
  color: var(--kb-ink);
  border: 1px solid var(--kb-line);
}

.kb-btn-ghost:hover {
  border-color: var(--kb-accent);
  color: var(--kb-accent);
}

.kb-btn.is-loading { opacity: 0.68; pointer-events: none; }

.kb-swim {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.kb-col {
  background: var(--kb-canvas);
  border-radius: 12px;
  padding: 12px;
  min-height: 132px;
}

.kb-col-h {
  font-size: 12px;
  font-weight: 700;
  color: var(--kb-muted);
  letter-spacing: 0.6px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.kb-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.kb-dot-wait { background: var(--kb-wait); }
.kb-dot-run { background: var(--kb-accent); }
.kb-dot-ok { background: var(--kb-ok); }

.kb-mini {
  background: #fff;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  box-shadow: 0 4px 12px rgba(27, 31, 42, 0.04);
  margin-bottom: 8px;
}

.kb-mini:last-child { margin-bottom: 0; }
.kb-mini strong { display: block; font-size: 13.5px; }
.kb-mini span { color: var(--kb-muted); font-size: 12px; }

/* —— 泳道区块 —— */
.kb-lane {
  padding: 28px 0 8px;
}

.kb-lane-card {
  background: var(--kb-card);
  border-radius: 16px;
  box-shadow: var(--kb-shadow);
  border: 1px solid #EEF1F7;
  padding: 28px 28px 26px;
}

.kb-lane-card:hover { box-shadow: var(--kb-shadow-hover); }

.kb-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.8px;
  color: var(--kb-accent);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.kb-kicker::before {
  content: "";
  width: 18px;
  height: 3px;
  border-radius: 2px;
  background: var(--kb-accent);
}

.kb-lane h2 {
  font-size: 24px;
  line-height: 1.4;
  font-weight: 800;
  margin-bottom: 14px;
}

.kb-lane h3 {
  font-size: 18px;
  margin: 18px 0 8px;
  font-weight: 700;
}

.kb-copy p { margin-bottom: 14px; color: #2A3140; }
.kb-copy p:last-child { margin-bottom: 0; }

/* —— 四格大数字 —— */
.kb-tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 18px 0 16px;
}

.kb-tile {
  background: var(--kb-canvas);
  border-radius: 12px;
  padding: 18px 16px 16px;
  border: 1px solid var(--kb-line);
}

.kb-tile:hover { border-color: #C9D7F5; }

.kb-tile b {
  display: block;
  font-size: 32px;
  line-height: 1.1;
  color: var(--kb-accent);
  font-weight: 800;
}

.kb-tile span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--kb-muted);
  font-weight: 600;
}

/* —— 评价叠卡 —— */
.kb-stack { display: flex; flex-direction: column; gap: 12px; margin-top: 16px; }

.kb-review {
  background: var(--kb-canvas);
  border-radius: 12px;
  padding: 18px 20px;
  border: 1px solid var(--kb-line);
}

.kb-review:hover { border-color: #C9D7F5; }

.kb-review p { color: #2A3140; }

.kb-who {
  margin-top: 10px;
  font-size: 13.5px;
  font-weight: 700;
}

.kb-who span { color: var(--kb-muted); font-weight: 500; }

/* —— 表格 —— */
.kb-table-wrap {
  overflow-x: auto;
  margin: 16px 0;
  border-radius: 12px;
  border: 1px solid var(--kb-line);
}

.kb-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}

.kb-table th,
.kb-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--kb-line);
  vertical-align: top;
}

.kb-table th {
  background: var(--kb-ice);
  font-weight: 700;
  color: var(--kb-ink);
}

.kb-table tr:last-child td { border-bottom: 0; }

.kb-table tbody tr:hover td { background: #F8FAFF; }

/* —— 安装步骤 —— */
.kb-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 16px 0;
}

.kb-steps li {
  background: var(--kb-canvas);
  border-radius: 12px;
  padding: 16px 16px 14px;
  border: 1px solid var(--kb-line);
  counter-increment: step;
}

.kb-steps { counter-reset: step; }

.kb-steps li:hover { border-color: #C9D7F5; }

.kb-steps strong {
  display: block;
  margin-bottom: 6px;
  font-size: 15.5px;
}

.kb-step-n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: var(--kb-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  margin-right: 8px;
}

/* —— FAQ 始终展开 —— */
.kb-ask {
  margin-top: 16px;
}

.kb-ask dt {
  font-weight: 800;
  padding: 14px 0 6px;
  border-top: 1px solid var(--kb-line);
  color: var(--kb-ink);
}

.kb-ask dt:first-child { border-top: 0; padding-top: 0; }

.kb-ask dd {
  color: #2A3140;
  padding-bottom: 10px;
}

/* —— CTA —— */
.kb-cta {
  margin: 28px 0 8px;
  background: linear-gradient(180deg, #FFFFFF, #F3F6FF);
  border: 1px solid #D9E4FA;
  border-radius: 16px;
  padding: 28px;
  box-shadow: var(--kb-shadow);
  text-align: center;
}

.kb-cta p { color: var(--kb-muted); margin: 8px 0 16px; }
.kb-cta .kb-cta-title {
  color: var(--kb-ink);
  font-size: 22px;
  font-weight: 800;
  margin: 0;
}

/* —— 页脚 —— */
.kb-foot {
  margin-top: 40px;
  padding: 28px 0 32px;
  background: #fff;
  border-top: 1px solid var(--kb-line);
}

.kb-foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 28px;
}

.kb-foot h4 {
  font-size: 14px;
  margin-bottom: 10px;
}

.kb-foot p,
.kb-foot a {
  display: block;
  font-size: 14px;
  color: var(--kb-muted);
  margin-bottom: 6px;
}

.kb-foot a:hover { color: var(--kb-accent); }

.kb-legal {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--kb-line);
  font-size: 13px;
  color: var(--kb-muted);
}

.kb-legal p { margin-bottom: 6px; }

@media (max-width: 980px) {
  .kb-swim,
  .kb-tiles,
  .kb-steps,
  .kb-foot-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .kb-rail {
    position: sticky;
    width: 100%;
    height: 58px;
    flex-direction: row;
    justify-content: space-between;
    padding: 0 14px;
  }
  .kb-rail-logo { margin-bottom: 0; width: 36px; height: 36px; }
  .kb-rail-nav { flex-direction: row; width: auto; }
  .kb-app { margin-left: 0; }
  .kb-board h1 { font-size: 26px; }
  .kb-swim,
  .kb-tiles,
  .kb-steps,
  .kb-foot-grid { grid-template-columns: 1fr; }
  .kb-nav { display: none; }
}