/* ────────────────────────────────────────────────────────────────
   编辑式交易台 (Editorial Trading Desk)
   - Fraunces  : display headings (variable opsz axis)
   - DM Sans   : body
   - JetBrains : tabular numbers / mono / code
   ──────────────────────────────────────────────────────────────── */

@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght,SOFT@9..144,300..900,0..100&family=DM+Sans:opsz,wght@9..40,300..700&family=JetBrains+Mono:wght@400;500;700&display=swap");

:root {
  --ink:           #0d0c0a;        /* canvas */
  --ink-2:         #16140f;        /* surface */
  --ink-3:         #1f1c16;        /* elevated */
  --rule:          #3a3530;        /* hairline border */
  --rule-2:        #5b544a;        /* stronger border */
  --paper:         #f4ede1;        /* primary text */
  --paper-dim:     #c5bdae;        /* secondary text */
  --paper-mute:    #8a8175;        /* muted / labels */
  --gold:          #f0b90b;        /* binance accent */
  --gold-deep:     #c89800;
  --jade:          #2dd4a3;        /* long / positive / ok */
  --coral:         #ff5c5c;        /* short / negative / err */
  --amber:         #ffb547;        /* warning */
  --indigo:        #6f8cff;        /* info */

  --serif:   "Fraunces", ui-serif, Georgia, serif;
  --sans:    "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  --shell-pad-x: 56px;
  --rail-w:      260px;
}

/* ─── reset ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

html {
  background: var(--ink);
  color: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "ss02";
}

body {
  font-family: var(--sans);
  font-size: 14.5px;
  line-height: 1.55;
  letter-spacing: 0.005em;
  min-height: 100vh;
  position: relative;
}

/* film-grain overlay — gives the dark canvas warmth */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.5 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* warm vignette so center reads softer than edges */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 99;
  background:
    radial-gradient(ellipse at 18% 20%, rgba(240,185,11,0.05), transparent 55%),
    radial-gradient(ellipse at 82% 80%, rgba(45,212,163,0.03), transparent 55%);
}

/* ─── shell layout ─────────────────────────────────── */
.shell {
  display: grid;
  grid-template-columns: var(--rail-w) 1fr;
  min-height: 100vh;
}

.rail {
  border-right: 1px solid var(--rule);
  padding: 36px 28px 28px;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 28px;
  background: linear-gradient(180deg, var(--ink) 0%, #0a0908 100%);
}

.rail__brand {
  font-family: var(--serif);
  font-variation-settings: "opsz" 144, "wght" 600, "SOFT" 0;
  font-size: 28px;
  line-height: 1;
  letter-spacing: -0.015em;
  color: var(--paper);
}
.rail__brand .acc { color: var(--gold); font-style: italic; }
.rail__sub {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-mute);
  margin-top: 6px;
}

.rail__nav { display: flex; flex-direction: column; gap: 2px; margin-top: 8px; }
.rail__nav a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 10px 9px 14px;
  color: var(--paper-dim);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.01em;
  border-left: 2px solid transparent;
  transition: color 120ms ease, border-color 120ms ease, background 160ms ease;
}
.rail__nav a:hover { color: var(--paper); background: rgba(240,185,11,0.04); }
.rail__nav a.is-active {
  color: var(--gold);
  border-left-color: var(--gold);
  background: rgba(240,185,11,0.06);
}
.rail__nav a .num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--paper-mute);
  letter-spacing: 0.1em;
}
.rail__nav a.is-active .num { color: var(--gold-deep); }
.rail__nav .group-label {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--paper-mute);
  padding: 16px 14px 6px;
}

.rail__foot {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--paper-mute);
  line-height: 1.7;
}
.rail__foot a { color: var(--paper-dim); text-decoration: none; }
.rail__foot a:hover { color: var(--gold); }
.rail__foot .email {
  display: block;
  color: var(--paper);
  font-family: var(--sans);
  font-size: 12.5px;
  margin-bottom: 4px;
  word-break: break-all;
}

/* ─── main canvas ──────────────────────────────────── */
.canvas {
  padding: 44px var(--shell-pad-x) 80px;
  max-width: 1320px;
}

.masthead {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 26px;
  margin-bottom: 38px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}
.masthead__kicker {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}
.masthead__title {
  font-family: var(--serif);
  font-variation-settings: "opsz" 144, "wght" 400, "SOFT" 30;
  font-size: 64px;
  line-height: 0.95;
  letter-spacing: -0.025em;
  color: var(--paper);
  margin: 0;
}
.masthead__title em {
  font-style: italic;
  font-variation-settings: "opsz" 144, "wght" 400, "SOFT" 100;
  color: var(--gold);
}
.masthead__lede {
  font-family: var(--serif);
  font-variation-settings: "opsz" 14, "wght" 350;
  font-size: 16px;
  color: var(--paper-dim);
  max-width: 480px;
  text-align: right;
  line-height: 1.55;
  font-style: italic;
}

.masthead--compact { padding-bottom: 18px; margin-bottom: 28px; }
.masthead--compact .masthead__title { font-size: 42px; }

/* edition strip - little chronicle line under title */
.edition {
  display: flex;
  gap: 18px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-mute);
  margin: 22px 0 32px;
  padding: 10px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.edition span { display: inline-flex; gap: 8px; align-items: center; }
.edition .dot {
  width: 5px; height: 5px; background: var(--gold); border-radius: 50%;
  box-shadow: 0 0 10px rgba(240,185,11,0.6);
}

/* ─── sections ─────────────────────────────────────── */
section { margin-bottom: 56px; }

.sect-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
}
.sect-head h3 {
  font-family: var(--serif);
  font-variation-settings: "opsz" 36, "wght" 500, "SOFT" 0;
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0;
}
.sect-head .roman {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
}
.sect-head .count {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--paper-mute);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ─── tables ───────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
}
thead th {
  text-align: left;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-mute);
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule-2);
  background: transparent;
  vertical-align: bottom;
}
tbody td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--rule);
  color: var(--paper);
  vertical-align: middle;
}
tbody tr {
  transition: background 120ms ease;
}
tbody tr:hover { background: rgba(244,237,225,0.02); }
tbody tr:hover td:first-child { box-shadow: inset 2px 0 0 var(--gold); }

td.mono, .mono { font-family: var(--mono); font-feature-settings: "tnum"; font-size: 13px; }
.num-pos { color: var(--jade); font-family: var(--mono); }
.num-neg { color: var(--coral); font-family: var(--mono); }

/* ─── forms ────────────────────────────────────────── */
form { display: flex; flex-direction: column; gap: 14px; }

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-mute);
  font-weight: 500;
}

input[type=text], input[type=email], input[type=password],
input[type=number], input[type=url], textarea, select {
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: normal;
  text-transform: none;
  color: var(--paper);
  background: var(--ink-2);
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 11px 13px;
  outline: none;
  transition: border-color 140ms ease, background 160ms ease;
  width: 100%;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--gold);
  background: var(--ink-3);
}
input::placeholder { color: var(--paper-mute); opacity: 0.7; }

select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'><path d='M1 1 l5 5 l5 -5' stroke='%23c5bdae' stroke-width='1.4' fill='none'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

input[type=checkbox], input[type=radio] {
  width: 16px; height: 16px;
  accent-color: var(--gold);
  margin: 0;
  vertical-align: middle;
}
label.row { flex-direction: row; align-items: center; gap: 10px; text-transform: none; letter-spacing: 0.005em; font-size: 13.5px; font-family: var(--sans); color: var(--paper); }

button, input[type=submit], .btn {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 11px 18px;
  border: 1px solid var(--gold);
  background: var(--gold);
  color: #1a140a;
  border-radius: 0;
  cursor: pointer;
  transition: background 140ms ease, color 140ms ease, transform 80ms ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
button:hover, .btn:hover { background: var(--gold-deep); }
button:active, .btn:active { transform: translateY(1px); }
button.ghost, .btn.ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--rule-2);
}
button.ghost:hover, .btn.ghost:hover { border-color: var(--gold); color: var(--gold); background: transparent; }
button.danger, .btn.danger {
  background: transparent;
  border-color: var(--coral);
  color: var(--coral);
}
button.danger:hover, .btn.danger:hover { background: var(--coral); color: var(--ink); }
button.tiny, .btn.tiny { font-size: 10px; padding: 6px 10px; letter-spacing: 0.18em; }

/* button-row keeps actions horizontal */
.btn-row { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }

/* form grid (two-column inputs) */
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 720px) { .grid { grid-template-columns: 1fr; } }

/* ─── tags / status pills ──────────────────────────── */
.tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid var(--rule-2);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  line-height: 1;
}
.tag-ok    { color: var(--jade);   border-color: rgba(45,212,163,0.4); background: rgba(45,212,163,0.06); }
.tag-warn  { color: var(--amber);  border-color: rgba(255,181,71,0.4); background: rgba(255,181,71,0.06); }
.tag-err   { color: var(--coral);  border-color: rgba(255,92,92,0.4);  background: rgba(255,92,92,0.06); }
.tag-info  { color: var(--indigo); border-color: rgba(111,140,255,0.4); background: rgba(111,140,255,0.06); }
.tag-mute  { color: var(--paper-mute); border-color: var(--rule); }
.tag-gold  { color: var(--gold);   border-color: rgba(240,185,11,0.4); background: rgba(240,185,11,0.06); }

.tag::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%; background: currentColor;
}
.tag.bare::before { display: none; }

/* ─── alerts ───────────────────────────────────────── */
.err, .alert--err {
  border-left: 3px solid var(--coral);
  background: rgba(255,92,92,0.08);
  padding: 14px 18px;
  margin-bottom: 22px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--paper);
  letter-spacing: 0.02em;
}
.alert--ok {
  border-left: 3px solid var(--jade);
  background: rgba(45,212,163,0.08);
  padding: 14px 18px;
  margin-bottom: 22px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.02em;
}

/* ─── article (auth pages, narrow) ─────────────────── */
.article {
  max-width: 460px;
  margin: 80px auto;
  padding: 48px 44px;
  border: 1px solid var(--rule);
  background: linear-gradient(180deg, rgba(255,255,255,0.012), transparent);
  position: relative;
}
.article::before, .article::after {
  content: "";
  position: absolute;
  width: 14px; height: 14px;
  border: 1px solid var(--gold);
}
.article::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.article::after  { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.article__kicker {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
}
.article__title {
  font-family: var(--serif);
  font-variation-settings: "opsz" 144, "wght" 400, "SOFT" 30;
  font-size: 48px;
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0 0 32px;
}
.article__title em { font-style: italic; color: var(--gold); font-variation-settings: "opsz" 144, "wght" 400, "SOFT" 100; }

/* ─── card grid (data sources detail, key cards, etc.) ─ */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.card {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 22px 24px;
  background: var(--ink);
  transition: background 160ms ease;
  position: relative;
}
.card:hover { background: var(--ink-2); }
.card__label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--paper-mute);
  margin-bottom: 10px;
}
.card__value {
  font-family: var(--serif);
  font-variation-settings: "opsz" 36, "wght" 500;
  font-size: 28px;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.card__value.mono {
  font-family: var(--mono);
  font-size: 24px;
  letter-spacing: 0;
}
.card__delta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  margin-top: 6px;
}

/* ─── disclosure ───────────────────────────────────── */
details.disclosure {
  border: 1px dashed var(--rule);
  padding: 12px 16px;
  margin-top: 8px;
}
details.disclosure summary {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-mute);
  cursor: pointer;
  list-style: none;
  user-select: none;
}
details.disclosure summary::before {
  content: "+ ";
  display: inline-block;
  margin-right: 6px;
  color: var(--gold);
  font-weight: 700;
}
details.disclosure[open] summary::before { content: "− "; }

/* ─── small text helpers ───────────────────────────── */
small, .small { font-size: 12px; color: var(--paper-dim); }
.mute { color: var(--paper-mute); }
hr { border: 0; border-top: 1px solid var(--rule); margin: 28px 0; }

a { color: var(--gold); text-decoration: none; transition: color 140ms ease; }
a:hover { color: var(--paper); }

code, pre {
  font-family: var(--mono);
  font-size: 12.5px;
  background: var(--ink-2);
  padding: 2px 6px;
  color: var(--paper);
}
pre {
  display: block;
  padding: 20px 24px;
  border: 1px solid var(--rule);
  overflow-x: auto;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
}

/* nested forms inside table actions: kill margin */
table form { margin: 0; display: inline-flex; }

/* helper rows used in admin source rows */
.row-actions { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }

/* ─── page-load animation, restrained ──────────────── */
@keyframes risefade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.masthead { animation: risefade 700ms cubic-bezier(.2,.7,.2,1) both; }
.edition  { animation: risefade 700ms 80ms cubic-bezier(.2,.7,.2,1) both; }
section   { animation: risefade 700ms 140ms cubic-bezier(.2,.7,.2,1) both; }
section + section { animation-delay: 200ms; }
section + section + section { animation-delay: 260ms; }

/* ─── responsive: collapse rail on narrow screens ──── */
@media (max-width: 960px) {
  .shell { grid-template-columns: 1fr; }
  .rail { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; padding: 18px 24px; gap: 18px; }
  .rail__nav { flex-direction: row; flex-wrap: wrap; }
  .rail__nav a { padding: 6px 10px; border-left: none; border-bottom: 2px solid transparent; }
  .rail__nav a.is-active { border-left: none; border-bottom-color: var(--gold); }
  .rail__nav .group-label { display: none; }
  .rail__foot { width: 100%; margin-top: 0; padding-top: 12px; }
  .canvas { padding: 28px 24px 60px; }
  .masthead { flex-direction: column; align-items: flex-start; }
  .masthead__title { font-size: 44px; }
  .masthead__lede { text-align: left; }
  :root { --shell-pad-x: 24px; }
}