/* ════════════════════════════════════════════════════════════
   期货套利分析终端 — 蓝白研究风格
   白底 · 极淡冷调方格纸 · 编辑体衬线标题 · 钢蓝强调色
   红=做多/偏高 绿=做空/偏低（国内期货习惯）
   ════════════════════════════════════════════════════════════ */
:root {
  --paper:    #ffffff;
  --paper-2:  #fbfcfe;
  --paper-3:  #f2f5fb;
  --ink:      #11141b;
  --ink-soft: #3d434f;
  --muted:    #6d7380;
  --line:     #eef1f7;
  --line-2:   #dee3ed;
  --accent:    #2456d6;
  --accent-hi: #3d70f5;
  --accent-bg: rgba(36,86,214,0.09);
  --bull:     #d23a2e;
  --bull-bg:  #fbeae7;
  --bear:     #1c9b6a;
  --bear-bg:  #e6f5ee;
  --serif: "Fraunces", "Noto Serif SC", Georgia, "Songti SC", serif;
  --cjk: "Noto Serif SC", Georgia, "Songti SC", serif;
  --sans: "Hanken Grotesk", "Noto Sans SC", system-ui, -apple-system, "PingFang SC", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --shadow: 0 18px 42px -30px rgba(20,30,70,0.30);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--ink); background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  background-image:
    radial-gradient(80% 50% at 92% -8%, rgba(36,86,214,0.06), transparent 60%),
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
  background-attachment: fixed;
  min-height: 100vh;
}

/* ── 顶栏 ── */
header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.86);
  backdrop-filter: blur(14px) saturate(1.1);
  border-bottom: 1px solid var(--line-2);
}
.mast {
  width: 100%; padding: 14px 28px;
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 30px; height: 30px; flex: none; border-radius: 8px;
  background: var(--accent); color: #fff; display: grid; place-items: center;
  font-family: var(--serif); font-weight: 900; font-size: 16px;
  box-shadow: 0 6px 16px -6px rgba(36,86,214,0.6);
}
.brand .titles { display: flex; flex-direction: column; gap: 1px; }
.brand .company {
  font-family: var(--sans); font-size: 11px; font-weight: 700;
  letter-spacing: 0.18em; color: var(--ink);
}
.brand .kicker {
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.34em;
  text-transform: uppercase; color: var(--accent);
}
.brand h1 {
  margin: 0; font-family: var(--serif); font-weight: 700;
  font-size: 19px; line-height: 1.08; color: var(--ink);
}
.brand h1 em { font-style: italic; font-weight: 500; color: var(--accent); }
nav { display: flex; gap: 20px; align-items: center; margin-left: 4px; flex-wrap: wrap; }
nav a {
  font-family: var(--sans); font-size: 13.5px; font-weight: 500;
  text-decoration: none; color: var(--muted);
  padding: 4px 1px; border-bottom: 2px solid transparent; transition: all .18s ease;
}
nav a:hover { color: var(--ink); }
nav a.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.nav-drop { position: relative; }
summary.nav-drop-trigger {
  list-style: none; cursor: pointer;
  font-family: var(--sans); font-size: 13.5px; font-weight: 500;
  color: var(--muted); padding: 4px 1px; border-bottom: 2px solid transparent;
  transition: all .18s ease; margin: 0;
}
summary.nav-drop-trigger:hover { color: var(--ink); }
summary.nav-drop-trigger.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.nav-caret { margin-left: 4px; font-size: 10px; color: var(--muted); transition: transform .18s ease; }
.nav-drop[open] .nav-caret { transform: rotate(180deg); }
.nav-drop-menu {
  position: absolute; top: calc(100% + 8px); left: 0; width: 240px; padding: 10px;
  border: 1px solid var(--line-2); border-radius: 14px;
  background: rgba(255,255,255,0.98); box-shadow: 0 20px 42px -28px rgba(20,30,70,0.36);
  backdrop-filter: blur(12px); z-index: 100;
  display: flex; flex-direction: column; gap: 4px;
}
.nav-drop-menu a { padding: 10px 12px; border: 1px solid transparent; border-radius: 10px;
  background: transparent; color: var(--ink); font-size: 13px; white-space: nowrap; }
.nav-drop-menu a:hover { background: var(--paper-2); border-color: var(--line-2); color: var(--ink); }
.nav-drop-menu a.active { background: var(--accent-bg); border-color: rgba(36,86,214,.18); }
.source {
  margin-left: auto; text-align: right;
  font-family: var(--mono); font-size: 10px; line-height: 1.55;
  color: var(--muted); letter-spacing: 0.03em; max-width: 320px;
}
.source b { color: var(--ink-soft); font-weight: 500; }
.local-badge {
  font-family: var(--mono); font-size: 10.5px; color: var(--bear);
  border: 1px solid rgba(28,155,106,.35); background: var(--bear-bg);
  padding: 5px 12px; border-radius: 999px; white-space: nowrap;
}
.data-strip {
  font-family: var(--mono); font-size: 11px; color: var(--ink-soft);
  background: var(--paper-2); border-bottom: 1px solid var(--line);
  padding: 6px 28px; letter-spacing: .03em;
}
.data-strip b { color: var(--accent); font-weight: 700; }
.data-strip.warn-strip { background: rgba(192,86,63,0.08); border-color: rgba(192,86,63,0.3); }

/* ── 主布局 ── */
main { width: 100%; max-width: 100%; padding: 24px 28px 80px; }
.panel {
  border: 1px solid var(--line); border-radius: 16px; background: var(--paper);
  box-shadow: var(--shadow); padding: 18px 20px; margin-bottom: 18px;
}
.chart-panel { padding: 12px 14px 8px; }
#chart, #chart2, #butterfly-chart, #legs-chart { height: 540px; width: 100%; }
#chart-panel:fullscreen, #chart-panel2:fullscreen { padding: 20px; background: #fff; }
#chart-panel:fullscreen #chart, #chart-panel2:fullscreen #chart2 { height: calc(100vh - 80px); }

/* ── 命令栏 / 表单 ── */
.cmd {
  display: flex; align-items: flex-end; gap: 16px; flex-wrap: wrap;
  padding: 16px 20px; border: 1px solid var(--line); border-radius: 14px;
  background: var(--paper); box-shadow: var(--shadow); margin-bottom: 16px;
}
.cmd.prompt::before {
  content: "›"; font-family: var(--mono); color: var(--accent);
  font-size: 18px; font-weight: 700; opacity: .7; align-self: center;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field > label, .field .lbl {
  font-family: var(--sans); font-size: 11px; font-weight: 600;
  letter-spacing: 0.04em; color: var(--muted);
}
input, select {
  font-family: var(--sans); font-size: 13.5px; height: 38px; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line-2); border-radius: 9px;
  padding: 0 12px; transition: border-color .16s ease, box-shadow .16s ease;
}
input:hover, select:hover { border-color: var(--muted); }
input[type=number] { width: 92px; font-family: var(--mono); }
select {
  padding-right: 30px; cursor: pointer; appearance: none; min-width: 118px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%232456d6' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 11px center;
}
input:focus, select:focus, button:focus-visible {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-bg);
}
button {
  font-family: var(--sans); font-size: 13.5px; font-weight: 600;
  height: 38px; padding: 0 18px; cursor: pointer; border-radius: 9px;
  border: 1px solid var(--line-2); background: var(--paper); color: var(--ink);
  transition: all .16s ease;
}
button:hover { background: var(--paper-3); border-color: var(--muted); transform: translateY(-1px); }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.primary:hover {
  background: var(--accent-hi); border-color: var(--accent-hi);
  box-shadow: 0 12px 26px -12px rgba(36,86,214,0.6);
}
button.accent { border-color: rgba(36,86,214,.45); color: var(--accent); background: var(--paper); }
button.accent:hover { background: var(--accent-bg); border-color: var(--accent); color: var(--accent); }
button.secondary { border-color: var(--line); color: var(--ink-soft); background: var(--paper); }
button.secondary:hover { background: var(--paper-3); color: var(--ink); }
button:disabled { opacity: .45; cursor: not-allowed; transform: none;
  background: var(--paper-2); color: var(--muted); border-color: var(--line); box-shadow: none; }
.sep { width: 1px; height: 24px; background: var(--line-2); align-self: center; }

/* ── 品种下拉组合框 ── */
.combo { position: relative; min-width: 236px; }
.combo-trigger {
  display: flex; align-items: center; width: 236px; min-height: 38px; height: 38px;
  justify-content: space-between; padding: 5px 12px; margin: 0;
  background: var(--paper); color: var(--ink); border: 1px solid var(--line-2);
  border-radius: 9px; text-align: left;
}
.combo-trigger:hover, .combo.open .combo-trigger { border-color: var(--accent); }
.combo-trigger::after {
  content: ""; width: 10px; height: 6px; flex: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%232456d6' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-size: 10px 6px; transition: transform .16s ease;
}
.combo.open .combo-trigger::after { transform: rotate(180deg); }
.combo-trigger-label {
  display: flex; flex-direction: column; align-items: flex-start; justify-content: center;
  gap: 1px; min-width: 0; flex: 1; overflow: hidden;
}
.combo-trigger-main {
  font-family: var(--sans); font-size: 13px; font-weight: 600; color: var(--ink);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 178px;
}
.combo-trigger-sub {
  font-family: var(--mono); font-size: 10px; color: var(--muted); letter-spacing: .04em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 178px;
}
.combo-panel {
  position: absolute; top: calc(100% + 6px); left: 0; width: 320px; z-index: 90;
  border: 1px solid var(--line-2); border-radius: 12px; background: #fff;
  box-shadow: 0 22px 48px -24px rgba(20,30,70,.35); padding: 8px; display: none;
}
.combo.open .combo-panel { display: block; }
.combo-search {
  width: 100%; height: 34px; margin-bottom: 6px; font-size: 12.5px;
  border-radius: 8px;
}
.combo-options { max-height: 320px; overflow-y: auto; }
.combo-group-label {
  font-family: var(--mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--muted); padding: 8px 8px 4px;
}
.combo-option {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  width: 100%; height: auto; min-height: 40px; padding: 7px 10px; margin: 1px 0;
  border: 1px solid transparent; border-radius: 8px; text-align: left;
  background: transparent; color: var(--ink); font-size: 12.5px;
}
.combo-option:hover { background: var(--paper-3); }
.combo-option.is-active { border-color: rgba(36,86,214,.35); background: var(--accent-bg); }
.combo-option.is-selected { font-weight: 600; }
.combo-option-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.combo-option-name { font-family: var(--sans); font-size: 12.5px; font-weight: 500; }
.combo-option-meta { font-family: var(--mono); font-size: 10px; color: var(--muted); }
.combo-option-code {
  font-family: var(--mono); font-size: 12px; font-weight: 700; color: var(--accent);
}
.combo-empty { padding: 20px; text-align: center; color: var(--muted); font-size: 12.5px; }
.native-select-hidden { display: none; }

/* ── 状态消息 ── */
.msg {
  min-height: 18px; margin: 12px 2px 4px; font-family: var(--sans);
  font-size: 12.5px; color: var(--ink-soft); display: flex; align-items: center; gap: 9px;
}
.msg:not(:empty)::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%; flex: none;
  background: var(--accent);
}
.msg.error { color: var(--bull); }
.msg.error::before { background: var(--bull); }
.msg.warn { color: var(--accent-hi); }
.msg.warn::before { animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: .25 } }

.hint {
  font-family: var(--sans); font-size: 12.5px; line-height: 1.8; color: var(--muted);
  margin-bottom: 10px;
}
.hint b { color: var(--ink-soft); font-weight: 600; }

/* ── 标签 ── */
.tag {
  font-family: var(--sans); font-size: 12px; font-weight: 600; border-radius: 7px;
  padding: 3px 10px; display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid transparent; white-space: nowrap;
}
.tag.bull, .tag.long, .tag.z-hi { color: var(--bull); background: var(--bull-bg); border-color: rgba(210,58,46,0.24); }
.tag.bear, .tag.short, .tag.z-lo { color: var(--bear); background: var(--bear-bg); border-color: rgba(28,155,106,0.24); }
.tag.neutral, .tag.z-mid { color: var(--ink-soft); background: var(--paper-3); border-color: var(--line-2); }

/* ── 表格 ── */
.table-panel { padding: 0; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 12px; }
thead th {
  text-align: left; padding: 11px 14px; font-weight: 600; color: var(--muted);
  background: var(--paper-2); border-bottom: 1px solid var(--line-2);
  letter-spacing: .05em; font-size: 11px; white-space: nowrap;
}
tbody td {
  padding: 10px 14px; border-bottom: 1px solid var(--line); color: var(--ink-soft);
  white-space: nowrap;
}
tbody tr:hover { background: var(--paper-2); }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
.row-link { color: var(--accent); text-decoration: none; font-weight: 600; }
.row-link:hover { text-decoration: underline; }
.empty {
  text-align: center; padding: 56px 20px; color: var(--muted);
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.08em;
}
.empty .cursor { color: var(--accent); animation: blink 1.1s steps(2) infinite; }

/* ── 选项卡（蝶式） ── */
.tabs { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.tab {
  font-family: var(--sans); font-size: 13px; font-weight: 600; height: 36px;
  border-radius: 9px; border: 1px solid var(--line-2); background: var(--paper);
  color: var(--muted);
}
.tab.active { color: var(--accent); border-color: rgba(36,86,214,.45); background: var(--accent-bg); }
.tab-view { display: none; }
.tab-view.active { display: block; }

/* ── 统计条 ── */
.stat-strip {
  display: flex; gap: 24px; flex-wrap: wrap; margin: 14px 0;
  font-family: var(--mono); font-size: 12px; color: var(--ink-soft);
}
.stat-strip b { color: var(--accent); font-weight: 700; }

/* ── 消息面 ── */
.feed { display: flex; flex-direction: column; gap: 10px; }
.feed-item {
  border: 1px solid var(--line); border-radius: 12px; background: var(--paper);
  padding: 13px 16px; display: flex; gap: 14px; align-items: flex-start;
  transition: border-color .15s ease;
}
.feed-item:hover { border-color: var(--line-2); }
.feed-item .f-time {
  font-family: var(--mono); font-size: 11px; color: var(--muted);
  flex: none; padding-top: 2px;
}
.feed-item .f-body { min-width: 0; flex: 1; }
.feed-item a.f-title {
  font-family: var(--sans); font-size: 14px; font-weight: 600; color: var(--ink);
  text-decoration: none; line-height: 1.5; display: block;
}
.feed-item a.f-title:hover { color: var(--accent); }
.feed-item .f-meta { margin-top: 5px; font-family: var(--mono); font-size: 11px; color: var(--muted); }
.f-tags { display: inline-flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.f-tag {
  font-family: var(--mono); font-size: 10.5px; color: var(--accent);
  background: var(--accent-bg); border-radius: 999px; padding: 2px 9px;
}
.movers { display: flex; flex-direction: column; gap: 8px; }
.mover-row {
  display: flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: 12px;
  padding: 8px 4px; border-bottom: 1px solid var(--line);
}
.mover-row .mv-sym { font-weight: 700; color: var(--ink); width: 64px; }
.mover-row .mv-name { color: var(--muted); flex: 1; }
.mover-row .mv-chg { font-weight: 700; width: 72px; text-align: right; }
.up { color: var(--bull); }
.down { color: var(--bear); }

/* ── 其他 ── */
.count { margin-left: auto; font-family: var(--mono); font-size: 11.5px; color: var(--muted); }
.count b { color: var(--accent); font-weight: 700; }
.auto-badge {
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-soft);
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px;
  border-radius: 999px; border: 1px solid var(--line-2); background: var(--paper-2);
}
.auto-badge .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
  animation: blink 1.6s steps(2) infinite;
}
.legend-note { font-family: var(--sans); font-size: 12px; color: var(--muted); margin: 10px 0 0; }

/* ── 首屏使用路径引导 ── */
.guide-banner { margin-bottom: 16px; }
.guide-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.guide-step {
  display: flex; align-items: center; gap: 10px; padding: 12px 14px;
  border: 1px solid var(--line-2); border-radius: 11px; cursor: pointer;
  background: var(--paper-2); transition: all .16s ease;
}
.guide-step:hover { border-color: rgba(36,86,214,.45); background: var(--accent-bg); }
.guide-num {
  width: 26px; height: 26px; flex: none; border-radius: 50%;
  background: var(--accent); color: #fff; display: grid; place-items: center;
  font-family: var(--mono); font-size: 13px; font-weight: 700;
}
.guide-body { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.guide-body b { font-size: 13.5px; color: var(--ink); }
.guide-sub { font-size: 11.5px; color: var(--muted); line-height: 1.5; }
.guide-arrow { margin-left: auto; color: var(--accent); font-family: var(--mono); }
@media (max-width: 720px) {
  .guide-steps { grid-template-columns: 1fr; }
}

/* ── AI 投资建议面板 ── */
.action {
  font-family: var(--sans); font-size: 13.5px; font-weight: 700;
  padding: 5px 14px; border-radius: 10px; letter-spacing: 0.02em;
  border: 1px solid transparent;
}
.action.long  { background: var(--bull-bg); color: var(--bull); border-color: rgba(210,58,46,.35); }
.action.short { background: var(--bear-bg); color: var(--bear); border-color: rgba(28,155,106,.35); }
.action.hold  { background: var(--paper-3); color: var(--ink-soft); border-color: var(--line-2); }
.advice-meta { font-family: var(--mono); font-size: 11px; color: var(--muted); letter-spacing: .03em; }
.summary {
  font-family: var(--cjk); font-size: 14.5px; line-height: 1.8; color: var(--ink);
  margin-bottom: 16px; padding: 14px 16px; background: var(--paper-2);
  border-radius: 10px; border-left: 3px solid var(--accent);
}
.levels { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.level {
  flex: 1; min-width: 150px; border-radius: 11px; padding: 12px 15px;
  display: flex; flex-direction: column; gap: 5px; border: 1px solid var(--line-2);
  background: linear-gradient(180deg, var(--paper-2), var(--paper));
}
.lv-label {
  font-family: var(--mono); font-size: 10px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted);
}
.lv-val { font-family: var(--mono); font-size: 19px; font-weight: 700; color: var(--ink); }
.level.entry  .lv-val { color: var(--accent); }
.level.target .lv-val { color: var(--bear); }
.level.stop   .lv-val { color: var(--bull); }
.basis { margin-bottom: 14px; }
.basis h4 {
  margin: 0 0 7px; font-family: var(--mono); font-size: 11px;
  letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
}
.basis ul { margin: 0; padding-left: 18px; }
.basis li { font-family: var(--cjk); font-size: 13.5px; line-height: 1.8; color: var(--ink); }
.basis.risk li { color: var(--bull); }
.disclaimer {
  font-family: var(--mono); font-size: 10.5px; color: var(--muted);
  margin-top: 12px; line-height: 1.6;
}

/* ── 信号狙击卡片 ── */
.sig-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 14px; margin-top: 14px;
}
.sig-card {
  border: 1px solid var(--line); border-radius: 14px; background: var(--paper);
  box-shadow: var(--shadow); padding: 16px 18px; display: flex;
  flex-direction: column; gap: 11px; position: relative;
}
.sig-card.tracking { border-color: rgba(36,86,214,.45); box-shadow: 0 16px 36px -22px rgba(36,86,214,.45); }
.sig-card.ended { opacity: .82; }
.sig-card.invalid { opacity: .6; }
.sig-head { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; }
.sig-title { font-family: var(--serif); font-size: 15.5px; font-weight: 700; color: var(--ink); }
.sig-year {
  font-family: var(--mono); font-size: 10px; color: var(--muted);
  background: var(--paper-3); border: 1px solid var(--line-2);
  border-radius: 999px; padding: 1px 7px; margin-left: 4px; vertical-align: 2px;
}
.sig-meta { font-family: var(--mono); font-size: 10.5px; color: var(--muted); margin-top: 3px; }
.sig-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px;
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 12px;
}
.sig-stat { display: flex; flex-direction: column; gap: 3px; }
.sig-stat .lv-val { font-size: 16px; }
.sig-row {
  display: flex; gap: 16px; flex-wrap: wrap; font-family: var(--mono);
  font-size: 11.5px; color: var(--ink-soft);
}
.sig-row b { color: var(--ink); font-weight: 700; }
.sig-row .hi { color: var(--bull); }
.sig-models { display: flex; gap: 7px; flex-wrap: wrap; }
.model-tag {
  font-family: var(--mono); font-size: 10.5px; padding: 3px 9px;
  border-radius: 999px; border: 1px solid var(--line-2);
  color: var(--muted); background: var(--paper);
}
.model-tag.ok { color: var(--bear); border-color: rgba(28,155,106,.35); background: var(--bear-bg); }
.model-tag.warn { color: var(--accent); border-color: rgba(36,86,214,.35); background: var(--accent-bg); }
.model-tag.bad { color: var(--bull); border-color: rgba(210,58,46,.35); background: var(--bull-bg); }
.sig-params {
  font-family: var(--mono); font-size: 11.5px; color: var(--muted);
  background: var(--paper-3); border-radius: 8px; padding: 7px 11px;
}
.sig-params b { color: var(--ink); font-weight: 700; }
.sig-actions { display: flex; gap: 8px; margin-top: 2px; }
.sig-actions button { height: 32px; font-size: 12.5px; padding: 0 14px; }
.guide-block { margin-bottom: 14px; }
.guide-block h4 {
  margin: 0 0 6px; font-family: var(--mono); font-size: 11.5px;
  letter-spacing: .06em; color: var(--accent);
}
.guide-block p { margin: 0 0 6px; font-size: 13px; line-height: 1.8; color: var(--ink-soft); }
.guide-block ul { margin: 0 0 6px; padding-left: 18px; }
.guide-block li { font-size: 13px; line-height: 1.85; color: var(--ink-soft); }
.guide-block b { color: var(--ink); }

@media (max-width: 720px) {
  .sig-grid { grid-template-columns: 1fr; }
  .sig-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (prefers-reduced-motion: reduce) { * { animation: none !important; } }
@media (max-width: 900px) { main { max-width: 100%; } }
@media (max-width: 720px) {
  .mast { padding: 12px 16px; gap: 12px; }
  .brand h1 { font-size: 17px; }
  .source { display: none; }
  main { padding: 18px 14px 60px; }
  .count { margin-left: 0; }
  .cmd { padding: 12px 14px; gap: 10px; }
  input[type=number] { width: 76px; }
  select { min-width: 100px; }
  .combo, .combo-trigger { width: 100%; min-width: 100%; }
  .combo-panel { width: min(320px, calc(100vw - 40px)); }
}
@media (max-width: 480px) {
  .brand .company { font-size: 10px; letter-spacing: 0.12em; }
  .brand .kicker { display: none; }
  nav { gap: 14px; }
  nav a { font-size: 13px; }
  .cmd { padding: 10px 12px; }
  .panel { padding: 14px; border-radius: 12px; }
}