:root {
  --bg: #0a090c;
  --bg-2: #171310;
  --panel: #211a16;
  --panel-2: #15110e;
  --text: #faf2db;
  --muted: #bcae95;
  --accent: #faf2db;
  --accent-2: #b8925f;
  --accent-soft: rgba(184, 146, 95, 0.16);
  --border: rgba(184, 146, 95, 0.45);
  --danger: #ffb2a8;
  --ok: #c8f1c3;
  --radius: 16px;
  --shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

html {
  background-color: var(--bg);
  overscroll-behavior: none;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-user-select: none;
  user-select: none;
  overscroll-behavior-y: none;
}

input,
textarea {
  -webkit-user-select: text;
  user-select: text;
}

.app-header {
  padding: 22px 16px 12px;
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.app-header h1 {
  margin: 0;
  font-size: 1.28rem;
  letter-spacing: 0.2px;
  font-family: "Ewert", serif;
  font-weight: 400;
}

.header-icon-link {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.header-icon-link i {
  width: 19px;
  height: 19px;
}

.header-icon-link:hover {
  transform: translateY(-1px);
}

.header-icon-link:focus-visible {
  outline: none;
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.app-main {
  padding: 10px 12px 28px;
  max-width: 960px;
  margin: 0 auto;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}

.label {
  display: block;
  margin-bottom: 8px;
  font-weight: 700;
}

input[type="search"],
select,
button {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  padding: 11px 12px;
  font-size: 0.96rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

input[type="search"]:focus,
select:focus,
button:focus-visible {
  outline: none;
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

input[type="search"]::-webkit-search-cancel-button {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  cursor: pointer;
  background:
    linear-gradient(45deg, transparent 44%, var(--accent-2) 44%, var(--accent-2) 56%, transparent 56%),
    linear-gradient(-45deg, transparent 44%, var(--accent-2) 44%, var(--accent-2) 56%, transparent 56%);
  border: none;
  border-radius: 0;
  opacity: 0.95;
}

button {
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  touch-action: manipulation;
}

button:active,
.chip:active,
.tab-btn:active {
  outline: none;
}

.primary-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 2px 0 6px;
  margin-bottom: 12px;
}

.tab-btn {
  width: 100%;
  padding: 9px 14px;
  font-weight: 600;
  background: var(--panel-2);
  color: var(--text);
}

.tab-btn.active {
  border-color: var(--accent-2);
  background: var(--accent-2);
  color: #1c1713;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.section-head h2 {
  margin: 4px 2px 10px;
  font-size: 1.1rem;
}

.title-with-icon,
.rule-title {
  display: flex;
  align-items: center;
  gap: 8px;
}

.title-with-icon i,
.rule-title i {
  width: 18px;
  height: 18px;
  color: var(--accent);
  flex: 0 0 auto;
}

.sub-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  padding: 2px 1px 7px;
  margin-bottom: 8px;
}

.chip {
  width: 100%;
  padding: 7px 11px;
  font-size: 0.88rem;
  background: var(--panel-2);
}

.chip.active {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: #1c1713;
}

.content-list {
  display: grid;
  gap: 10px;
}

.rule-card {
  background: var(--panel);
  border: 1px solid rgba(200, 162, 106, 0.35);
  border-radius: 14px;
  padding: 13px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

.rule-card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--text);
}

.rule-card p {
  margin: 6px 0;
  color: var(--text);
  line-height: 1.45;
}

.rule-line {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 6px 0;
}

.rule-line i {
  width: 16px;
  height: 16px;
  color: var(--accent-2);
  flex: 0 0 auto;
  margin-top: 3px;
}

.line-index-icon {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid var(--accent-2);
  color: var(--bg);
  background: var(--accent-2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  margin-top: 2px;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
}

.rule-line p {
  margin: 0;
}

.kw-highlight {
  background: rgba(184, 146, 95, 0.82);
  color: #1c1713;
  border-radius: 4px;
  padding: 0 3px;
  font-weight: 700;
}

@media (min-width: 700px) {
  .tab-btn {
    padding: 10px 16px;
  }

  .sub-nav {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .content-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 420px) {
  .app-header h1 {
    font-size: 1.18rem;
  }
}