.page-contact {
  --co-radius: 10px;
  --co-gap: 14px;
  background: var(--ink);
  color: var(--paper);
}

.page-contact .co-hero {
  padding-block: 28px 36px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(760px 300px at 88% -10%, rgba(232, 76, 29, .18), transparent 70%),
    linear-gradient(180deg, var(--ink-deep), var(--ink));
}

.page-contact .co-hero__inner {
  display: grid;
  gap: 24px;
}

.page-contact .co-hero__lead h1 {
  margin: 10px 0 12px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(28px, 6.4vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .co-hero__sub {
  margin: 0 0 18px;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.page-contact .co-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .co-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}

.page-contact .co-hero__facts .mono {
  font-size: 20px;
  font-weight: 700;
  color: var(--flame-soft);
  letter-spacing: 0.02em;
}

.page-contact .co-hero__media {
  margin: 0;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--co-radius);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  box-shadow: var(--shadow-1);
}

.page-contact .co-hero__media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-contact .co-index {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin-top: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}

.page-contact .co-index::-webkit-scrollbar { display: none; }

.page-contact .co-index a {
  flex: 0 0 auto;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-decoration: none;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-contact .co-index a:hover,
.page-contact .co-index a:focus-visible {
  color: var(--paper);
  border-color: var(--edge);
}

.page-contact .co-body {
  display: grid;
  gap: 32px;
  padding-block: 32px 8px;
}

.page-contact .co-main {
  display: grid;
  gap: 40px;
  min-width: 0;
}

.page-contact .co-section__head { margin-bottom: 18px; }

.page-contact .co-section__head h2 {
  margin: 8px 0 10px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .co-section__intro {
  margin: 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
}

/* 合作方向标签页 */
.page-contact .co-tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-contact .co-tabs .tabs__btn {
  appearance: none;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.2;
  cursor: pointer;
  transition: color .16s var(--ease), border-color .16s var(--ease), background-color .16s var(--ease);
}

.page-contact .co-tabs .tabs__btn:hover { color: var(--paper); border-color: var(--edge); }

.page-contact .co-tabs .tabs__btn[aria-selected="true"] {
  background: var(--flame);
  border-color: var(--flame);
  color: var(--ink);
  font-weight: 700;
}

.page-contact .co-tabs .tabs__btn:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-contact .co-tabs .tabs__panel { padding-top: 18px; }

.page-contact .co-panel__title {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .co-panel__grid {
  display: grid;
  gap: 16px;
}

.page-contact .co-panel__col {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--flame);
  border-radius: 0 var(--co-radius) var(--co-radius) 0;
  background: rgba(16, 42, 62, .55);
}

.page-contact .co-panel__label {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--teal);
}

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

.page-contact .co-list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.68;
  color: var(--muted);
}

.page-contact .co-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--teal-soft);
}

.page-contact .co-panel__media {
  margin: 16px 0 0;
  width: 100%;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
  border-radius: var(--co-radius);
  overflow: hidden;
}

.page-contact .co-panel__media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 三步流程 */
.page-contact .co-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .co-steps li {
  position: relative;
  padding: 0 0 24px 54px;
}

.page-contact .co-steps li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 38px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--line), transparent);
}

.page-contact .co-steps li:last-child { padding-bottom: 0; }
.page-contact .co-steps li:last-child::before { display: none; }

.page-contact .co-steps__num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 33px;
  height: 33px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--ink);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--flame-soft);
}

.page-contact .co-steps h3 {
  margin: 2px 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
}

.page-contact .co-steps p {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
  max-width: 58ch;
}

.page-contact .co-steps__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--teal);
}

/* 资料清单 */
.page-contact .co-check {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .co-check li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--co-radius);
  background: var(--panel);
  box-shadow: var(--glow-line);
}

.page-contact .co-check h3 {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .co-check p {
  margin: 0;
  font-size: 14px;
  line-height: 1.66;
  color: var(--muted);
}

.page-contact .co-check__box {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  padding: 0;
  border: 1px solid var(--edge);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-contact .co-check__box::after {
  content: "";
  width: 11px;
  height: 6px;
  border-left: 2px solid var(--teal);
  border-bottom: 2px solid var(--teal);
  transform: rotate(-45deg) scale(0);
  transition: transform .18s var(--ease);
}

.page-contact .co-check__box[aria-pressed="true"] {
  border-color: var(--teal);
  background: rgba(46, 196, 182, .12);
}

.page-contact .co-check__box[aria-pressed="true"]::after { transform: rotate(-45deg) scale(1); }

.page-contact .co-check__box:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

/* 侧栏联系卡 */
.page-contact .co-aside { min-width: 0; }

.page-contact .co-card {
  position: relative;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--co-radius);
  background: linear-gradient(180deg, rgba(16, 42, 62, .95), rgba(11, 27, 43, .95));
  box-shadow: var(--shadow-1), var(--glow-line);
  overflow: hidden;
}

.page-contact .co-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--flame), var(--flame-soft) 55%, transparent);
}

.page-contact .co-card__title {
  margin: 8px 0 6px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-contact .co-card__note {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.66;
  color: var(--muted);
}

.page-contact .co-card__row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.page-contact .co-card__label {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--teal);
}

.page-contact .co-card__value {
  font-size: 15px;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-all;
}

.page-contact .co-card__row .co-copy {
  justify-self: start;
  margin-top: 4px;
}

.page-contact .co-card__hint {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  padding-left: 10px;
  border-left: 1px solid var(--warn);
}

.page-contact .co-card__cta {
  display: block;
  text-align: center;
}

/* 联系渠道 */
.page-contact .co-channels {
  margin-top: 40px;
  padding-block: 40px 44px;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(700px 260px at 12% 0%, rgba(46, 196, 182, .10), transparent 70%),
    linear-gradient(180deg, rgba(16, 42, 62, .85), var(--ink-deep));
}

.page-contact .co-channels__head { margin-bottom: 20px; }

.page-contact .co-channels__head h2 {
  margin: 8px 0 10px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.24;
  color: var(--paper);
}

.page-contact .co-channels__head p {
  margin: 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .co-channels__grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-contact .co-channel {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--co-radius);
  background: rgba(11, 27, 43, .7);
}

.page-contact .co-channel__label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--flame-soft);
}

.page-contact .co-channel__value {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-all;
}

.page-contact .co-channel__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.66;
  color: var(--muted);
}

.page-contact .co-template {
  margin-top: 20px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--co-radius);
  background: rgba(16, 42, 62, .6);
}

.page-contact .co-template__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.page-contact .co-template__head h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .co-template__body {
  margin: 0;
  padding: 14px;
  border-left: 2px solid var(--teal);
  background: rgba(11, 27, 43, .8);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.9;
  white-space: pre-wrap;
  overflow-x: auto;
}

.page-contact .co-channels__foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .co-channels__foot a {
  color: var(--teal-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 196, 182, .4);
}

.page-contact .co-channels__foot a:hover { color: var(--paper); }

@media (min-width: 640px) {
  .page-contact .co-channels__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-contact .co-panel__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 960px) {
  .page-contact .co-hero { padding-block: 36px 48px; }
  .page-contact .co-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 32px;
    align-items: center;
  }
  .page-contact .co-hero__media { aspect-ratio: 7 / 5; }
  .page-contact .co-body {
    grid-template-columns: minmax(0, 1fr) 336px;
    gap: 32px;
    padding-block: 44px 12px;
    align-items: start;
  }
  .page-contact .co-aside {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
  .page-contact .co-main { gap: 52px; }
  .page-contact .co-channels { padding-block: 52px 56px; }
}
<<<END>>>