.page-contact {
  --ct-soft: rgba(13, 33, 56, .82);
  --ct-cut: 16px;
}

/* ---------- Hero ---------- */
.page-contact .ct-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 52px) 0 clamp(30px, 5vw, 58px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(43, 231, 208, .18), transparent 58%),
    radial-gradient(90% 80% at 92% 6%, rgba(255, 181, 71, .13), transparent 62%),
    var(--ink);
}

.page-contact .ct-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .2;
  filter: grayscale(.35) contrast(1.05);
}

.page-contact .ct-hero__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(7, 20, 38, .5), rgba(7, 20, 38, .9) 72%, var(--ink)),
    repeating-linear-gradient(90deg, rgba(166, 255, 244, .06) 0 1px, transparent 1px 96px);
  pointer-events: none;
}

.page-contact .ct-hero__inner {
  position: relative;
  z-index: 2;
}

.page-contact .ct-hero h1 {
  margin: 14px 0 0;
  max-width: 18ch;
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-contact .ct-hero .lede {
  margin-top: 18px;
  max-width: 46ch;
  color: var(--mist);
  font-size: clamp(15px, 2.4vw, 17px);
  line-height: 1.8;
}

.page-contact .ct-quick {
  list-style: none;
  margin: clamp(22px, 4vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-contact .ct-quick__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 15px 16px;
  background: var(--ct-soft);
}

.page-contact .ct-quick__k {
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .ct-quick__v {
  font-family: var(--font-sans);
  font-size: clamp(15px, 3.6vw, 17px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
  text-decoration: none;
  word-break: break-word;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-contact a.ct-quick__v:hover,
.page-contact a.ct-quick__v:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .ct-quick__n {
  font-size: 12.5px;
  color: var(--mist);
}

/* ---------- Board ---------- */
.page-contact .ct-board {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-contact .ct-board h2,
.page-contact .ct-rhythm h2,
.page-contact .ct-help h2 {
  margin: 12px 0 0;
  font-size: clamp(23px, 3.8vw, 34px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .ct-channel-list {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-contact .ct-channel {
  position: relative;
  padding: 20px 20px 20px;
  background: linear-gradient(160deg, var(--panel), rgba(13, 33, 56, .55));
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: polygon(0 0, calc(100% - var(--ct-cut)) 0, 100% var(--ct-cut), 100% 100%, 0 100%);
  transition: transform .25s ease, box-shadow .25s ease;
}

.page-contact .ct-channel:hover {
  transform: translateY(-2px);
  box-shadow: inset 0 0 0 1px rgba(43, 231, 208, .45);
}

.page-contact .ct-channel__num {
  position: absolute;
  top: 18px;
  right: 20px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-contact .ct-channel__title {
  margin: 0 0 8px;
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--mist);
  font-weight: 600;
}

.page-contact .ct-channel__big {
  display: block;
  margin: 0 0 10px;
  padding-right: 44px;
  font-size: clamp(17px, 4.2vw, 24px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--paper);
  text-decoration: none;
  word-break: break-all;
  transition: color .2s ease;
}

.page-contact a.ct-channel__big:hover,
.page-contact a.ct-channel__big:focus-visible {
  color: var(--cyan);
}

.page-contact .ct-channel__big--addr {
  word-break: normal;
  font-size: clamp(16px, 3.6vw, 20px);
}

.page-contact .ct-channel__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .ct-callout {
  margin-top: 18px;
  padding: 18px 20px;
  border-left: 3px solid var(--amber);
  background: linear-gradient(120deg, rgba(255, 181, 71, .1), rgba(255, 181, 71, .02));
}

.page-contact .ct-callout__title {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--amber-soft);
}

.page-contact .ct-callout__text {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--paper);
}

/* ---------- Right column ---------- */
.page-contact .ct-figure {
  margin: 0 0 24px;
  overflow: hidden;
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
}

.page-contact .ct-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.85) contrast(1.03);
}

.page-contact .ct-sub {
  margin: 0 0 12px;
  font-size: 16px;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-contact .ct-check {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .ct-check__item {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: start;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(22, 51, 79, .38);
  border-left: 2px solid var(--line);
}

.page-contact .ct-check__num {
  font-size: 12px;
  line-height: 1.9;
  color: var(--amber);
}

.page-contact .ct-check__text {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper);
}

/* ---------- Tabs ---------- */
.page-contact .ct-tabs {
  position: relative;
}

.page-contact .ct-tab-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .ct-tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .ct-tab {
  padding: 8px 13px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
  background: rgba(22, 51, 79, .42);
  border: 1px solid var(--line);
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-contact .ct-tab:hover {
  color: var(--paper);
  border-color: rgba(43, 231, 208, .5);
}

.page-contact .ct-tab-input:focus-visible ~ .ct-tab-list .ct-tab {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact #ct-topic-1:checked ~ .ct-tab-list label[for="ct-topic-1"],
.page-contact #ct-topic-2:checked ~ .ct-tab-list label[for="ct-topic-2"],
.page-contact #ct-topic-3:checked ~ .ct-tab-list label[for="ct-topic-3"],
.page-contact #ct-topic-4:checked ~ .ct-tab-list label[for="ct-topic-4"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
}

.page-contact .ct-tab-panel {
  display: none;
  margin-top: 14px;
  padding: 16px 16px 18px;
  background: rgba(13, 33, 56, .86);
  box-shadow: inset 0 0 0 1px var(--line-soft);
  border-top: 2px solid var(--cyan);
}

.page-contact #ct-topic-1:checked ~ .ct-tab-panels .ct-tab-panel:nth-child(1),
.page-contact #ct-topic-2:checked ~ .ct-tab-panels .ct-tab-panel:nth-child(2),
.page-contact #ct-topic-3:checked ~ .ct-tab-panels .ct-tab-panel:nth-child(3),
.page-contact #ct-topic-4:checked ~ .ct-tab-panels .ct-tab-panel:nth-child(4) {
  display: block;
}

.page-contact .ct-tab-panel__sub {
  margin: 0;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-contact .ct-tab-panel__subj {
  margin: 8px 0 10px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--amber);
  word-break: break-word;
}

.page-contact .ct-tab-panel__text {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--paper);
}

/* ---------- Rhythm ---------- */
.page-contact .ct-rhythm {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(80% 60% at 85% 0%, rgba(43, 231, 208, .1), transparent 60%),
    transparent;
}

.page-contact .ct-rhythm__inner {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .ct-rhythm__text {
  margin: 14px 0 20px;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--mist);
}

.page-contact .ct-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
}

.page-contact .ct-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--amber) 60%, rgba(166, 255, 244, .08));
}

.page-contact .ct-step {
  position: relative;
  padding: 0 0 22px;
  transition: transform .25s ease;
}

.page-contact .ct-step:last-child {
  padding-bottom: 0;
}

.page-contact .ct-step::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 2px var(--cyan);
  transition: box-shadow .25s ease, background .25s ease;
}

.page-contact .ct-step:hover::before,
.page-contact .ct-step:focus-within::before {
  background: var(--amber);
  box-shadow: 0 0 0 2px var(--amber), 0 0 14px rgba(255, 181, 71, .6);
}

.page-contact .ct-step__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-contact .ct-step__num {
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-contact .ct-step__title {
  margin: 0;
  font-size: 16.5px;
  color: var(--paper);
}

.page-contact .ct-step__text {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- Help ---------- */
.page-contact .ct-help {
  border-top: 1px solid var(--line);
}

.page-contact .ct-help__grid {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-contact .ct-help__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  text-decoration: none;
  background: linear-gradient(150deg, rgba(22, 51, 79, .62), rgba(13, 33, 56, .55));
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
  transition: box-shadow .25s ease, transform .25s ease;
}

.page-contact .ct-help__card:hover,
.page-contact .ct-help__card:focus-visible {
  transform: translateY(-3px);
  box-shadow: inset 0 0 0 1px rgba(255, 181, 71, .6);
}

.page-contact .ct-help__num {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-contact .ct-help__title {
  margin: 0;
  font-size: 19px;
  color: var(--paper);
}

.page-contact .ct-help__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .ct-help__go {
  margin-top: 4px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-contact .ct-extra {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-contact .ct-extra__block {
  padding: 20px 18px;
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--line-soft);
}

.page-contact .ct-extra__block--soft {
  background: rgba(22, 51, 79, .3);
  border-left: 2px solid var(--cyan);
}

.page-contact .ct-extra__title {
  margin: 0 0 10px;
  font-size: 16.5px;
  color: var(--paper);
}

.page-contact .ct-extra__text {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .ct-extra__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .ct-extra__list li {
  padding: 9px 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  background: rgba(7, 20, 38, .55);
  border-left: 2px solid var(--amber);
  word-break: break-word;
}

.page-contact .ct-extra__list .mono {
  color: var(--amber-soft);
  font-size: 12.5px;
}

/* ---------- Responsive ---------- */
@media (min-width: 700px) {
  .page-contact .ct-quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .ct-help__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-contact .ct-board {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-contact .ct-board__right {
    padding-top: 34px;
  }

  .page-contact .ct-rhythm__inner {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    align-items: start;
  }

  .page-contact .ct-help__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .ct-extra {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-channel,
  .page-contact .ct-help__card,
  .page-contact .ct-step,
  .page-contact .ct-step::before,
  .page-contact .ct-tab,
  .page-contact .ct-quick__v,
  .page-contact .ct-channel__big {
    transition: none;
  }

  .page-contact .ct-channel:hover,
  .page-contact .ct-help__card:hover,
  .page-contact .ct-help__card:focus-visible {
    transform: none;
  }
}
<<<END>>>