/* ANNEX IX — 第九聯絡處
   Cold-war internal memo aesthetic. Paper-inverted dark palette. */

:root {
  --bg: #0c0d0e;
  --bg-2: #14151700;
  --paper: #e6e2da;
  --ink: #e6e2da;
  --ink-2: #c2bfb6;
  --ink-dim: #7a766c;
  --ink-faint: #44423b;
  --rule: #2a2a2c;
  --rule-2: #1c1c1e;
  --stamp: oklch(60% 0.165 28);
  --terminal: oklch(74% 0.06 195);

  --display: "Oswald", "Noto Sans TC", system-ui, sans-serif;
  --mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, monospace;
  --tc-sans: "Noto Sans TC", "Oswald", sans-serif;
  --tc: "Noto Serif TC", serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--ink); }
body {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Subtle scanline + film grain */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(230,226,218,0.012) 0 1px, transparent 1px 3px);
  z-index: 100;
  mix-blend-mode: screen;
}
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.9 0 0 0 0 0.88 0 0 0 0 0.83 0 0 0 0.05 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
  opacity: 0.55;
  z-index: 101;
  mix-blend-mode: overlay;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--ink);
  color: var(--bg);
  padding: 8px 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-decoration: none;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ───── Type ───── */
.bracket-ix {
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: 0.04em;
  display: inline-block;
}
.bracket-ix::before { content: "[ "; color: var(--ink-dim); }
.bracket-ix::after  { content: " ]"; color: var(--ink-dim); }

/* ───── Top classification banner ───── */
.classification {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 6px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ink-dim);
}
.classification .center { color: var(--stamp); letter-spacing: 0.32em; }
.blink { animation: blink 1.4s steps(2, end) infinite; }
@keyframes blink { 50% { opacity: 0.2; } }

/* ───── Page wrapper ───── */
.page {
  max-width: 1240px;
  margin: 0 auto;
  padding: 92px 56px 100px;
  position: relative;
  z-index: 1;
}

/* ───── Cover masthead ───── */
.cover {
  padding-top: 32px;
  border-bottom: 1px solid var(--ink-dim);
  padding-bottom: 26px;
  display: grid;
  grid-template-columns: 1fr auto auto;
  column-gap: 56px;
  row-gap: 0;
  align-items: end;
}
.cover .word {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(64px, 10vw, 128px);
  line-height: 0.92;
  letter-spacing: 0.005em;
  color: var(--ink);
  margin: 0;
}
.cover .word-tc {
  font-family: var(--tc-sans);
  font-weight: 400;
  font-size: clamp(20px, 2.4vw, 30px);
  letter-spacing: 0.45em;
  margin-top: 10px;
  color: var(--ink);
}
.cover .ident-block,
.cover .doc-block {
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.85;
  letter-spacing: 0.1em;
  color: var(--ink-2);
  text-transform: uppercase;
  white-space: nowrap;
}
.cover .ident-block .head,
.cover .doc-block .head {
  color: var(--ink-dim);
  font-size: 9px;
  letter-spacing: 0.28em;
  margin-bottom: 4px;
}
.cover .doc-block .strong { color: var(--ink); }
.cover .doc-block .gap    { margin-top: 8px; }

/* ───── Memo cover body ───── */
.memo {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 64px;
  padding: 36px 0 0;
  align-items: start;
}
.memo-body {
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--ink);
  letter-spacing: 0.005em;
  max-width: 62ch;
}
.memo-body p + p { margin-top: 14px; }
.memo-body em.hl {
  font-style: normal;
  color: var(--stamp);
}
.memo-tc {
  font-family: var(--tc);
  font-size: 14px;
  line-height: 2.05;
  color: var(--ink-2);
  letter-spacing: 0.04em;
  border-left: 1px solid var(--rule);
  padding: 4px 0 4px 22px;
  align-self: stretch;
}
.memo-tc p + p { margin-top: 12px; }

.cover-end {
  margin: 64px 0 0;
  text-align: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--ink-dim);
  text-transform: uppercase;
}
.cover-end::before, .cover-end::after {
  content: "—"; margin: 0 12px; color: var(--ink-faint);
}

/* ───── Section heading ───── */
.dossier { padding: 96px 0 0; }
.section-head {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  align-items: baseline;
  border-bottom: 1px solid var(--ink-dim);
  padding-bottom: 14px;
  margin-bottom: 36px;
  gap: 24px;
}
.section-head .num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-dim);
  letter-spacing: 0.25em;
  text-transform: uppercase;
}
.section-head .title {
  font-family: var(--display);
  font-weight: 500;
  font-size: 30px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0;
}
.section-head .title .tc {
  font-family: var(--tc-sans);
  font-weight: 400;
  font-size: 14px;
  color: var(--ink-dim);
  letter-spacing: 0.35em;
  margin-left: 18px;
  text-transform: none;
}
.section-head .ref {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-dim);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

/* ───── Operations register ───── */
.ops { font-family: var(--mono); }
.ops-row {
  display: grid;
  grid-template-columns: 80px 220px 1fr 100px 110px;
  gap: 24px;
  align-items: baseline;
  padding: 14px 8px;
  border-bottom: 1px solid var(--rule);
  font-size: 12px;
}
.ops-row.head {
  font-size: 9px;
  letter-spacing: 0.28em;
  color: var(--ink-faint);
  text-transform: uppercase;
  padding: 8px;
  border-bottom: 1px solid var(--ink-dim);
}
.ops-row .codename {
  font-family: var(--display);
  font-weight: 500;
  font-size: 17px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink);
}
.ops-row .codename .sub {
  display: block;
  font-family: var(--tc-sans);
  font-weight: 400;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink-dim);
  margin-top: 4px;
  text-transform: none;
}
.ops-row .brief {
  font-family: var(--tc);
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.85;
  letter-spacing: 0.02em;
}
.ops-row .ref-id { color: var(--ink-dim); letter-spacing: 0.1em; }
.ops-row .date   { color: var(--ink-dim); letter-spacing: 0.1em; }
.ops-row .status {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid currentColor;
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-align: center;
  width: fit-content;
}
.ops-row .status.active     { color: var(--terminal); }
.ops-row .status.classified { color: var(--stamp); }
.ops-row .status.archived   { color: var(--ink-faint); }
.ops-row .status.live       { color: var(--ink-2); }

/* ───── Capabilities ───── */
.caps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 56px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.cap {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--rule);
  align-items: baseline;
}
.cap .idx {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 0.22em;
  padding-top: 6px;
}
.cap .name {
  font-family: var(--display);
  font-weight: 500;
  font-size: 19px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink);
}
.cap .name-tc {
  font-family: var(--tc-sans);
  font-weight: 400;
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--ink-dim);
  margin-left: 12px;
  text-transform: none;
}
.cap .desc {
  font-family: var(--tc);
  font-size: 13px;
  color: var(--ink-2);
  margin-top: 4px;
  line-height: 1.85;
  letter-spacing: 0.02em;
}

/* ───── Transmit / contact ───── */
.transmit {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}
.transmit .left h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 56px;
  line-height: 1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: var(--ink);
}
.transmit .left .h3-tc {
  font-family: var(--tc-sans);
  font-weight: 400;
  font-size: 20px;
  letter-spacing: 0.4em;
  color: var(--ink-dim);
  margin-bottom: 24px;
}
.transmit .left p {
  font-family: var(--tc);
  font-size: 14px;
  line-height: 2;
  color: var(--ink-2);
  letter-spacing: 0.04em;
  max-width: 38ch;
}
.transmit .left .contact-list {
  margin-top: 24px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  font-family: var(--mono);
  text-transform: uppercase;
  font-style: normal;
  line-height: 1.9;
}
.transmit .left .contact-list a {
  color: var(--ink-faint);
  text-decoration: none;
  border-bottom: 1px dotted var(--ink-faint);
}
.transmit .left .contact-list a:hover { color: var(--ink-2); border-bottom-color: var(--ink-2); }

.transmit .form {
  border: 1px solid var(--rule);
  background: rgba(230,226,218,0.012);
}
.transmit .form .form-head {
  display: flex;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--ink-dim);
  text-transform: uppercase;
}
.transmit .form .form-head .live::before {
  content: "●"; color: var(--terminal);
  margin-right: 6px;
  animation: blink 1.4s steps(2, end) infinite;
}
.transmit .form .field {
  display: grid;
  grid-template-columns: 110px 1fr;
  border-bottom: 1px solid var(--rule);
  align-items: stretch;
}
.transmit .form .field label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--ink-faint);
  padding: 14px 16px;
  text-transform: uppercase;
  border-right: 1px solid var(--rule);
}
.transmit .form .field input,
.transmit .form .field textarea,
.transmit .form .field select {
  background: transparent;
  border: none;
  outline: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  padding: 12px 16px;
  width: 100%;
  resize: none;
}
.transmit .form .field input::placeholder,
.transmit .form .field textarea::placeholder { color: var(--ink-faint); }
.transmit .form .field textarea { min-height: 100px; line-height: 1.7; }
.transmit .form .field select { appearance: none; cursor: pointer; }
.transmit .form .submit-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 16px;
}
.transmit .form .submit-row .meta {
  font-family: var(--mono); font-size: 10px;
  color: var(--ink-faint); letter-spacing: 0.2em; text-transform: uppercase;
}
.transmit .form button {
  background: var(--ink-faint);
  color: var(--ink-dim);
  border: none;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  padding: 11px 20px;
  cursor: not-allowed;
  opacity: 0.65;
}

/* ───── Footer ───── */
.foot {
  margin-top: 96px;
  padding-top: 28px;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: auto 1fr 1fr auto;
  gap: 40px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
  align-items: start;
}
.foot .col .k {
  font-size: 9px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.foot .col .v { line-height: 1.95; color: var(--ink-2); font-style: normal; }
.foot .col.crest {
  font-family: var(--display);
  font-weight: 500;
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--ink);
}
.foot .col.sig { text-align: right; }

.bottom-class {
  margin-top: 64px;
  padding-bottom: 8px;
  text-align: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.42em;
  color: var(--stamp);
  text-transform: uppercase;
}

/* ───── Responsive ───── */
@media (max-width: 980px) {
  .page { padding: 78px 24px 80px; }
  .cover { grid-template-columns: 1fr; gap: 24px; }
  .memo { grid-template-columns: 1fr; gap: 24px; }
  .caps { grid-template-columns: 1fr; }
  .transmit { grid-template-columns: 1fr; gap: 32px; }
  .ops-row {
    grid-template-columns: 70px 1fr 100px;
    grid-template-areas:
      "ref code status"
      ". brief brief"
      ". date date";
    gap: 8px 16px;
  }
  .ops-row.head { display: none; }
  .ops-row .ref-id   { grid-area: ref; }
  .ops-row .codename { grid-area: code; }
  .ops-row .brief    { grid-area: brief; }
  .ops-row .date     { grid-area: date; font-size: 10px; }
  .ops-row .status   { grid-area: status; }
  .section-head { grid-template-columns: 1fr; gap: 8px; }
  .foot { grid-template-columns: 1fr 1fr; gap: 24px; }
  .foot .col.sig { text-align: left; }
  .classification { font-size: 9px; padding: 6px 12px; letter-spacing: 0.16em; }
  .classification .center { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .blink { animation: none; }
  .transmit .form .form-head .live::before { animation: none; }
}