/* ==========================================================================
   DAZHONG DIAL — frame.css
   Chassis: fixed dial rail, top bar, tuner scale, masthead, navigation,
   footer and buttons.
   ========================================================================== */

/* ------------------------------------------------------------------ rail */
.dz-rail {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--dz-rail);
  z-index: 40;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0 18px;
  background: var(--dz-ink);
  color: var(--dz-paper-3);
  border-right: 1px solid var(--dz-ink-line);
}

.dz-rail__mark {
  writing-mode: vertical-rl;
  font-family: var(--dz-mono);
  font-size: 10px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--dz-brass-lt);
}

.dz-rail__ticks {
  flex: 1;
  width: 100%;
  margin: 18px 0;
  background:
    repeating-linear-gradient(
      to bottom,
      rgba(244, 238, 226, 0.42) 0 1px,
      transparent 1px 9px
    );
  background-position: center;
  background-size: 14px 100%;
  background-repeat: no-repeat;
}

.dz-rail__num {
  writing-mode: vertical-rl;
  font-family: var(--dz-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: rgba(244, 238, 226, 0.55);
}

/* --------------------------------------------------------------- topbar */
.dz-topbar {
  background: var(--dz-ink);
  color: rgba(244, 238, 226, 0.72);
  font-family: var(--dz-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.dz-topbar__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 34px;
  padding-block: 6px;
}

.dz-topbar__note { margin: 0; }
.dz-topbar__note::before {
  content: "●";
  color: var(--dz-signal);
  margin-right: 8px;
  font-size: 9px;
}

.dz-topbar__meta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 0;
}
.dz-topbar__meta a:hover { color: var(--dz-amber); }
.dz-topbar__meta li + li {
  position: relative;
  padding-left: 20px;
}
.dz-topbar__meta li + li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 1px;
  height: 10px;
  background: rgba(244, 238, 226, 0.28);
  transform: translateY(-50%);
}

/* ------------------------------------------------------------- dial bar */
.dz-dialbar {
  background: var(--dz-paper-2);
  border-top: 1px solid var(--dz-ink);
  border-bottom: 1px solid var(--dz-line);
}

.dz-dialbar__in {
  display: grid;
  grid-template-columns: 148px 1fr 186px;
  align-items: center;
  gap: 26px;
  padding-block: 10px;
}

.dz-dialbar__on {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--dz-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--dz-ink);
}
.dz-dialbar__on em {
  display: block;
  font-family: var(--dz-sans);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--dz-muted);
}

.dz-lamp {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dz-signal);
  box-shadow: 0 0 0 3px rgba(195, 59, 37, 0.14);
  animation: dz-lamp 2.4s ease-in-out infinite;
  flex: 0 0 auto;
}

@keyframes dz-lamp {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.dz-dial {
  position: relative;
  height: 46px;
}

.dz-dial__ticks {
  position: absolute;
  inset: auto 0 0;
  height: 16px;
}
.dz-dial__ticks::before,
.dz-dial__ticks::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
}
.dz-dial__ticks::before {
  height: 15px;
  background: repeating-linear-gradient(
    to right,
    var(--dz-ink-soft) 0 1px,
    transparent 1px 10%
  );
}
.dz-dial__ticks::after {
  height: 7px;
  background: repeating-linear-gradient(
    to right,
    rgba(20, 17, 12, 0.42) 0 1px,
    transparent 1px 5%
  );
}

.dz-dial__marks {
  position: absolute;
  inset: 12px 0 auto;
  height: 14px;
  font-family: var(--dz-mono);
  font-size: 10px;
  color: var(--dz-muted);
  letter-spacing: 0;
}
.dz-dial__marks li {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  line-height: 1;
}
.dz-dial__marks li:nth-child(1) { left: 0; transform: none; }
.dz-dial__marks li:nth-child(2) { left: 10%; }
.dz-dial__marks li:nth-child(3) { left: 20%; }
.dz-dial__marks li:nth-child(4) { left: 30%; }
.dz-dial__marks li:nth-child(5) { left: 40%; }
.dz-dial__marks li:nth-child(6) { left: 50%; }
.dz-dial__marks li:nth-child(7) { left: 60%; }
.dz-dial__marks li:nth-child(8) { left: 70%; }
.dz-dial__marks li:nth-child(9) { left: 80%; }
.dz-dial__marks li:nth-child(10) { left: 90%; }
.dz-dial__marks li:nth-child(11) { left: 100%; transform: translateX(-100%); }

.dz-dial__needle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--pos, 42%);
  width: 2px;
  background: var(--dz-brass);
  animation: dz-tune 1.5s cubic-bezier(0.22, 0.9, 0.2, 1) both;
}
.dz-dial__needle::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 7px solid var(--dz-signal);
}
.dz-dial__needle::after {
  content: "";
  position: absolute;
  inset: 7px -3px 0;
  background: linear-gradient(to bottom, rgba(226, 166, 63, 0.34), transparent 70%);
}

@keyframes dz-tune {
  from { left: 4%; }
  to { left: var(--pos, 42%); }
}

.dz-dialbar__read {
  margin: 0;
  text-align: right;
  font-family: var(--dz-mono);
  line-height: 1.1;
}
.dz-dialbar__read strong {
  font-size: 24px;
  letter-spacing: 0.02em;
}
.dz-dialbar__read em {
  display: block;
  font-family: var(--dz-sans);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--dz-muted);
  white-space: nowrap;
}

/* --------------------------------------------------------------- masthead */
.dz-head {
  background: var(--dz-paper);
  border-bottom: 1px solid var(--dz-ink);
}

.dz-head__bar {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 82px;
  padding-block: 14px;
}

.dz-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}
.dz-logo__lamp {
  position: relative;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--dz-ink);
  background:
    radial-gradient(circle at 50% 50%, var(--dz-amber) 0 26%, transparent 27%),
    repeating-conic-gradient(from 0deg, var(--dz-ink) 0deg 2deg, transparent 2deg 12deg);
}
.dz-logo__txt {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.dz-logo__txt strong {
  font-size: 21px;
  letter-spacing: 0.1em;
}
.dz-logo__txt em {
  font-family: var(--dz-mono);
  font-size: 9px;
  letter-spacing: 0.24em;
  color: var(--dz-muted);
  text-transform: uppercase;
}

.dz-burger {
  display: none;
  margin-left: auto;
  padding: 8px 12px;
  border: 1px solid var(--dz-ink);
  background: transparent;
  font-family: var(--dz-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--dz-ink);
  cursor: pointer;
}

.dz-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-left: auto;
}

.dz-nav__list {
  display: flex;
  align-items: center;
  gap: 20px;
}
.dz-nav__list a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  letter-spacing: 0.02em;
  border-bottom: 1px solid transparent;
}
.dz-nav__list a:hover,
.dz-nav__list a[aria-current="page"] {
  border-bottom-color: var(--dz-brass);
  color: var(--dz-ink);
}
.dz-nav__no {
  display: block;
  font-family: var(--dz-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--dz-brass);
  line-height: 1.4;
}

.dz-head__acts {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

/* ---------------------------------------------------------------- buttons */
.dz-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 24px;
  border: 1px solid var(--dz-ink);
  background: transparent;
  color: var(--dz-ink);
  font-family: var(--dz-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.dz-btn:hover {
  background: var(--dz-ink);
  color: var(--dz-paper);
}
.dz-btn--brass {
  background: var(--dz-brass);
  border-color: var(--dz-brass);
  color: #fff8ec;
}
.dz-btn--brass:hover {
  background: var(--dz-ink);
  border-color: var(--dz-ink);
  color: var(--dz-paper);
}
.dz-btn--ghost { border-color: var(--dz-line); }
.dz-btn--sm {
  min-height: 36px;
  padding: 0 14px;
  font-size: 10.5px;
  letter-spacing: 0.1em;
}
.dz-btn--onink {
  border-color: rgba(244, 238, 226, 0.42);
  color: var(--dz-paper);
}
.dz-btn--onink:hover {
  background: var(--dz-paper);
  border-color: var(--dz-paper);
  color: var(--dz-ink);
}
.dz-btn--wide { width: 100%; }

.dz-acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------------------------------------------------------------- footer */
.dz-foot {
  background: var(--dz-ink);
  color: rgba(244, 238, 226, 0.74);
  margin-top: 0;
  border-top: 3px solid var(--dz-brass);
}

.dz-foot__grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.1fr;
  gap: 36px;
  padding-block: 56px 38px;
}

.dz-foot__brand p {
  max-width: 38ch;
  font-size: 13.5px;
  line-height: 1.9;
  margin-top: 18px;
}
.dz-foot .dz-logo__txt strong { color: var(--dz-paper); }
.dz-foot .dz-logo__txt em { color: rgba(244, 238, 226, 0.5); }
.dz-foot .dz-logo__lamp {
  border-color: rgba(244, 238, 226, 0.5);
  background:
    radial-gradient(circle at 50% 50%, var(--dz-amber) 0 26%, transparent 27%),
    repeating-conic-gradient(from 0deg, rgba(244, 238, 226, 0.7) 0deg 2deg, transparent 2deg 12deg);
}

.dz-foot__mark {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-top: 22px;
  font-family: var(--dz-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--dz-brass-lt);
}

.dz-foot__col h3 {
  margin-bottom: 16px;
  font-family: var(--dz-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--dz-brass-lt);
}
.dz-foot__col ul { display: grid; gap: 9px; font-size: 13.5px; }
.dz-foot__col a:hover { color: var(--dz-amber); }

.dz-foot__legal {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 36px;
  padding-block: 28px;
  border-top: 1px solid var(--dz-ink-line);
}
.dz-foot__legal h4 {
  margin-bottom: 10px;
  color: var(--dz-paper);
  font-family: var(--dz-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.dz-foot__legal p {
  font-size: 12.5px;
  line-height: 1.9;
  color: rgba(244, 238, 226, 0.6);
}
.dz-foot__legal ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
  font-size: 12.5px;
  color: rgba(244, 238, 226, 0.66);
}
.dz-foot__legal li {
  position: relative;
  padding-left: 14px;
}
.dz-foot__legal li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--dz-brass);
}

.dz-foot__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 16px 26px;
  border-top: 1px solid var(--dz-ink-line);
  font-family: var(--dz-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: rgba(244, 238, 226, 0.48);
}
.dz-foot__base p { margin: 0; }

/* ---------------------------------------------------------------- to top */
.dz-totop {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 30;
  width: 42px;
  height: 42px;
  border: 1px solid var(--dz-ink);
  background: var(--dz-paper);
  color: var(--dz-ink);
  font-family: var(--dz-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.dz-totop.is-on { opacity: 1; pointer-events: auto; }
.dz-totop:hover { background: var(--dz-ink); color: var(--dz-paper); }

/* ------------------------------------------------------------ breakpoints */
@media (min-width: 1080px) {
  .dz-rail { display: flex; }
  body { padding-left: var(--dz-rail); }
  .dz-totop { right: calc(20px + var(--dz-rail)); }
  .dz-skip { left: calc(12px + var(--dz-rail)); }
}

@media (max-width: 1120px) {
  .dz-head__bar { gap: 18px; min-height: 72px; }
  .dz-burger { display: inline-block; }
  .dz-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 35;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 10px 22px 22px;
    background: var(--dz-paper);
    border-bottom: 1px solid var(--dz-ink);
    box-shadow: 0 18px 30px rgba(20, 17, 12, 0.12);
  }
  .dz-nav.is-open { display: flex; }
  .dz-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .dz-nav__list a {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 12px 0;
    border-bottom: var(--dz-hair);
  }
  .dz-head__acts { justify-content: flex-start; padding-top: 16px; }
  .dz-head { position: relative; }
}

@media (max-width: 900px) {
  .dz-dialbar__in {
    grid-template-columns: 1fr auto;
    gap: 10px 16px;
  }
  .dz-dialbar__on { grid-column: 1 / -1; }
  .dz-dial { height: 40px; }
  .dz-dialbar__read strong { font-size: 20px; }
  .dz-foot__grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .dz-foot__legal { grid-template-columns: 1fr; gap: 16px; }
}

@media (max-width: 620px) {
  .dz-topbar__note { font-size: 10px; }
  .dz-topbar__meta { gap: 12px; }
  .dz-topbar__meta li + li { padding-left: 12px; }
  .dz-topbar__meta li:last-child { display: none; }
  .dz-head__acts .dz-btn--sm { padding: 0 10px; font-size: 9.5px; }
  .dz-logo__txt strong { font-size: 18px; }
  .dz-foot__grid { grid-template-columns: 1fr; }
  .dz-foot__legal ul { grid-template-columns: 1fr; }
}