.page-contact {
  --contact-gap: clamp(18px, 3vw, 32px);
  padding-bottom: clamp(56px, 9vw, 104px);
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

.page-contact .breadcrumb {
  margin-top: clamp(16px, 3vw, 26px);
}

.page-contact :is(p, li, dd) a:not(.btn) {
  color: var(--lime);
  text-decoration-color: rgba(214, 255, 63, .45);
  text-underline-offset: 3px;
}

.page-contact :is(p, li, dd) a:not(.btn):hover {
  text-decoration-color: var(--lime);
}

.page-contact a:focus-visible,
.page-contact .check-list__box:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* ---------- 首屏声明 ---------- */
.contact-intro {
  margin-top: clamp(22px, 3.6vw, 36px);
  max-width: 44ch;
}

.contact-intro__title {
  font-size: clamp(30px, 5.6vw, 52px);
  line-height: 1.14;
  margin: 10px 0 14px;
}

.contact-intro__hl {
  color: var(--lime);
  display: inline-block;
}

.contact-intro .lede {
  color: rgba(243, 247, 242, .8);
  max-width: 60ch;
  line-height: 1.8;
}

/* ---------- 45 / 55 分屏 ---------- */
.contact-split {
  display: grid;
  gap: var(--contact-gap);
  margin-top: clamp(28px, 4.4vw, 48px);
}

.contact-board {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut);
  min-height: 340px;
}

.contact-board__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 62% 50%;
  opacity: .4;
  filter: saturate(.85) contrast(1.05);
  z-index: 0;
}

.contact-board::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(158deg, rgba(7, 20, 15, .48) 0%, rgba(2, 8, 6, .92) 68%);
  pointer-events: none;
}

.contact-board__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: clamp(22px, 4vw, 38px);
}

.contact-board__rule {
  display: block;
  width: 68px;
  height: 3px;
  background: var(--lime);
  margin-bottom: 16px;
}

.contact-board__title {
  font-size: clamp(20px, 3.2vw, 26px);
  font-weight: 900;
  margin: 8px 0 clamp(18px, 3vw, 26px);
  color: var(--white);
}

.contact-board__list {
  margin: 0;
  display: grid;
  gap: clamp(16px, 2.6vw, 22px);
}

.contact-board__item {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.contact-board__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--stone);
  margin-bottom: 6px;
}

.contact-board__value {
  margin: 0;
  color: var(--white);
  line-height: 1.3;
}

.contact-board__value.num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 6.4vw, 40px);
  font-weight: 700;
  color: var(--lime);
  letter-spacing: .01em;
}

.contact-board__value--mail {
  font-family: var(--font-mono);
  font-size: clamp(14px, 3.3vw, 21px);
  word-break: break-all;
  color: var(--white);
  border-bottom: 1px dashed var(--line-lime);
  padding-bottom: 3px;
  display: inline-block;
}

.contact-board__value--time {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.8vw, 19px);
  color: rgba(243, 247, 242, .92);
}

.contact-board__note {
  margin: clamp(18px, 3vw, 26px) 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(243, 247, 242, .72);
  border-left: 2px solid var(--amber);
  padding-left: 12px;
}

/* ---------- 提交清单 ---------- */
.contact-steps {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
  align-content: start;
}

.contact-steps__title {
  font-size: clamp(22px, 3.6vw, 30px);
  font-weight: 900;
  line-height: 1.2;
  margin: 4px 0 0;
}

.contact-steps__lead {
  margin: 0;
  color: rgba(243, 247, 242, .78);
  line-height: 1.8;
  max-width: 56ch;
}

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

.check-list__label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 15px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut-sm);
  cursor: pointer;
  transition: border-color .18s var(--ease), transform .18s var(--ease), background-color .18s var(--ease);
}

.check-list__label:hover {
  border-color: var(--line-lime);
  transform: translateY(-2px);
  background: var(--moss);
}

.check-list__box {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--stone);
  background: transparent;
  clip-path: var(--cut-sm);
  cursor: pointer;
  transition: background-color .16s var(--ease), border-color .16s var(--ease);
}

.check-list__box:checked {
  background: var(--lime);
  border-color: var(--lime);
  box-shadow: inset 0 0 0 4px var(--panel);
}

.check-list__text {
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(243, 247, 242, .86);
}

.check-list__text .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--lime);
  margin-right: 8px;
  letter-spacing: .06em;
}

.check-list__box:checked ~ .check-list__text {
  color: var(--white);
}

.contact-steps__figure {
  margin: 4px 0 0;
}

/* ---------- 三类事情 ---------- */
.contact-modes {
  margin-top: clamp(48px, 8vw, 92px);
}

.contact-modes__title {
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 900;
  margin: 8px 0 0;
}

.modes-grid {
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
  margin-top: clamp(20px, 3vw, 30px);
}

.mode {
  position: relative;
  padding: calc(clamp(20px, 3vw, 28px) + 8px) clamp(18px, 2.8vw, 26px) clamp(20px, 3vw, 28px);
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.mode:hover {
  transform: translateY(-4px);
  border-color: var(--line-lime);
}

.mode::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--lime);
}

.mode:nth-child(2)::before {
  background: var(--amber);
}

.mode:nth-child(3)::before {
  background: var(--clay);
}

.mode__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--stone);
}

.mode h3 {
  font-size: clamp(18px, 2.6vw, 22px);
  font-weight: 900;
  margin: 8px 0 10px;
  line-height: 1.3;
}

.mode p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(243, 247, 242, .8);
}

.mode__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--lime) !important;
  letter-spacing: .04em;
}

/* ---------- 合作咨询 ---------- */
.contact-collab {
  margin-top: clamp(48px, 8vw, 92px);
  display: grid;
  gap: clamp(20px, 3.4vw, 36px);
}

.contact-collab__title {
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 900;
  line-height: 1.22;
  margin: 8px 0 14px;
}

.contact-collab__text p {
  color: rgba(243, 247, 242, .8);
  line-height: 1.8;
  max-width: 58ch;
}

.collab-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.collab-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(243, 247, 242, .86);
}

.collab-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  background: var(--lime);
  transform: skewX(-12deg);
}

.contact-collab__panel {
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut);
  padding: clamp(20px, 3.4vw, 32px);
}

.contact-collab__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--stone);
  margin: 0 0 8px;
}

.contact-collab__subject {
  font-family: var(--font-mono);
  font-size: clamp(13px, 2.4vw, 16px);
  line-height: 1.6;
  color: var(--lime);
  background: rgba(214, 255, 63, .08);
  border-left: 2px solid var(--lime);
  padding: 11px 13px;
  margin: 0 0 22px;
  word-break: break-word;
}

.collab-fields {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.collab-fields li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.65;
  color: rgba(243, 247, 242, .86);
}

.collab-fields li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .6em;
  width: 6px;
  height: 6px;
  background: var(--amber);
}

.contact-collab__btn {
  display: inline-block;
}

/* ---------- 地址与法务 ---------- */
.contact-legal {
  margin-top: clamp(44px, 7vw, 76px);
  padding-top: clamp(24px, 3.6vw, 38px);
  border-top: 1px solid var(--line);
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.contact-legal__title {
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 900;
  margin: 0 0 16px;
}

.addr-list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.addr-list__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--stone);
  margin-bottom: 4px;
}

.addr-list__row dd {
  margin: 0;
  color: var(--white);
  font-size: 15px;
  line-height: 1.6;
}

.addr-list__row dd.num {
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.contact-legal__links h3 {
  font-size: clamp(18px, 2.6vw, 21px);
  font-weight: 900;
  margin: 0 0 14px;
}

.legal-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.legal-links li {
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(243, 247, 242, .8);
  border-left: 2px solid var(--moss);
  padding-left: 12px;
}

.legal-links li:hover {
  border-left-color: var(--lime);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 900px) {
  .contact-split {
    grid-template-columns: 45fr 55fr;
    align-items: stretch;
  }

  .contact-collab {
    grid-template-columns: 1.05fr .95fr;
    align-items: center;
  }

  .contact-legal {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 760px) {
  .modes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1200px) {
  .contact-board {
    min-height: 460px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .check-list__label,
  .page-contact .mode {
    transition: none;
  }

  .page-contact .check-list__label:hover,
  .page-contact .mode:hover {
    transform: none;
  }
}

.page-contact {
  --contact-gap: clamp(18px, 3vw, 32px);
  padding-bottom: clamp(56px, 9vw, 104px);
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

.page-contact .breadcrumb {
  margin-top: clamp(16px, 3vw, 26px);
}

.page-contact :is(p, li, dd) a:not(.btn) {
  color: var(--lime);
  text-decoration-color: rgba(214, 255, 63, .45);
  text-underline-offset: 3px;
}

.page-contact :is(p, li, dd) a:not(.btn):hover {
  text-decoration-color: var(--lime);
}

.page-contact a:focus-visible,
.page-contact .check-list__box:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.contact-intro {
  margin-top: clamp(22px, 3.6vw, 36px);
  max-width: 44ch;
}

.contact-intro__title {
  font-size: clamp(30px, 5.6vw, 52px);
  line-height: 1.14;
  margin: 10px 0 14px;
}

.contact-intro__hl {
  color: var(--lime);
  display: inline-block;
}

.contact-intro .lede {
  color: rgba(243, 247, 242, .8);
  max-width: 60ch;
  line-height: 1.8;
}

.contact-split {
  display: grid;
  gap: var(--contact-gap);
  margin-top: clamp(28px, 4.4vw, 48px);
}

.contact-board {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut);
  min-height: 340px;
}

.contact-board__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 62% 50%;
  opacity: .4;
  filter: saturate(.85) contrast(1.05);
  z-index: 0;
}

.contact-board::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(158deg, rgba(7, 20, 15, .48) 0%, rgba(2, 8, 6, .92) 68%);
  pointer-events: none;
}

.contact-board__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: clamp(22px, 4vw, 38px);
}

.contact-board__rule {
  display: block;
  width: 68px;
  height: 3px;
  background: var(--lime);
  margin-bottom: 16px;
}

.contact-board__title {
  font-size: clamp(20px, 3.2vw, 26px);
  font-weight: 900;
  margin: 8px 0 clamp(18px, 3vw, 26px);
  color: var(--white);
}

.contact-board__list {
  margin: 0;
  display: grid;
  gap: clamp(16px, 2.6vw, 22px);
}

.contact-board__item {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.contact-board__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--stone);
  margin-bottom: 6px;
}

.contact-board__value {
  margin: 0;
  color: var(--white);
  line-height: 1.3;
}

.contact-board__value.num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 6.4vw, 40px);
  font-weight: 700;
  color: var(--lime);
  letter-spacing: .01em;
}

.contact-board__value--mail {
  font-family: var(--font-mono);
  font-size: clamp(14px, 3.3vw, 21px);
  word-break: break-all;
  color: var(--white);
  border-bottom: 1px dashed var(--line-lime);
  padding-bottom: 3px;
  display: inline-block;
}

.contact-board__value--time {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.8vw, 19px);
  color: rgba(243, 247, 242, .92);
}

.contact-board__note {
  margin: clamp(18px, 3vw, 26px) 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(243, 247, 242, .72);
  border-left: 2px solid var(--amber);
  padding-left: 12px;
}

.contact-steps {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
  align-content: start;
}

.contact-steps__title {
  font-size: clamp(22px, 3.6vw, 30px);
  font-weight: 900;
  line-height: 1.2;
  margin: 4px 0 0;
}

.contact-steps__lead {
  margin: 0;
  color: rgba(243, 247, 242, .78);
  line-height: 1.8;
  max-width: 56ch;
}

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

.check-list__label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 15px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut-sm);
  cursor: pointer;
  transition: border-color .18s var(--ease), transform .18s var(--ease), background-color .18s var(--ease);
}

.check-list__label:hover {
  border-color: var(--line-lime);
  transform: translateY(-2px);
  background: var(--moss);
}

.check-list__box {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--stone);
  background: transparent;
  clip-path: var(--cut-sm);
  cursor: pointer;
  transition: background-color .16s var(--ease), border-color .16s var(--ease);
}

.check-list__box:checked {
  background: var(--lime);
  border-color: var(--lime);
  box-shadow: inset 0 0 0 4px var(--panel);
}

.check-list__text {
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(243, 247, 242, .86);
}

.check-list__text .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--lime);
  margin-right: 8px;
  letter-spacing: .06em;
}

.check-list__box:checked ~ .check-list__text {
  color: var(--white);
}

.contact-steps__figure {
  margin: 4px 0 0;
}

.contact-modes {
  margin-top: clamp(48px, 8vw, 92px);
}

.contact-modes__title {
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 900;
  margin: 8px 0 0;
}

.modes-grid {
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
  margin-top: clamp(20px, 3vw, 30px);
}

.mode {
  position: relative;
  padding: calc(clamp(20px, 3vw, 28px) + 8px) clamp(18px, 2.8vw, 26px) clamp(20px, 3vw, 28px);
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.mode:hover {
  transform: translateY(-4px);
  border-color: var(--line-lime);
}

.mode::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--lime);
}

.mode:nth-child(2)::before {
  background: var(--amber);
}

.mode:nth-child(3)::before {
  background: var(--clay);
}

.mode__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--stone);
}

.mode h3 {
  font-size: clamp(18px, 2.6vw, 22px);
  font-weight: 900;
  margin: 8px 0 10px;
  line-height: 1.3;
}

.mode p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(243, 247, 242, .8);
}

.mode__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--lime) !important;
  letter-spacing: .04em;
}

.contact-collab {
  margin-top: clamp(48px, 8vw, 92px);
  display: grid;
  gap: clamp(20px, 3.4vw, 36px);
}

.contact-collab__title {
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 900;
  line-height: 1.22;
  margin: 8px 0 14px;
}

.contact-collab__text p {
  color: rgba(243, 247, 242, .8);
  line-height: 1.8;
  max-width: 58ch;
}

.collab-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.collab-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(243, 247, 242, .86);
}

.collab-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  background: var(--lime);
  transform: skewX(-12deg);
}

.contact-collab__panel {
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--cut);
  padding: clamp(20px, 3.4vw, 32px);
}

.contact-collab__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--stone);
  margin: 0 0 8px;
}

.contact-collab__subject {
  font-family: var(--font-mono);
  font-size: clamp(13px, 2.4vw, 16px);
  line-height: 1.6;
  color: var(--lime);
  background: rgba(214, 255, 63, .08);
  border-left: 2px solid var(--lime);
  padding: 11px 13px;
  margin: 0 0 22px;
  word-break: break-word;
}

.collab-fields {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.collab-fields li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.65;
  color: rgba(243, 247, 242, .86);
}

.collab-fields li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .6em;
  width: 6px;
  height: 6px;
  background: var(--amber);
}

.contact-collab__btn {
  display: inline-block;
}

.contact-legal {
  margin-top: clamp(44px, 7vw, 76px);
  padding-top: clamp(24px, 3.6vw, 38px);
  border-top: 1px solid var(--line);
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.contact-legal__title {
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 900;
  margin: 0 0 16px;
}

.addr-list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.addr-list__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--stone);
  margin-bottom: 4px;
}

.addr-list__row dd {
  margin: 0;
  color: var(--white);
  font-size: 15px;
  line-height: 1.6;
}

.addr-list__row dd.num {
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.contact-legal__links h3 {
  font-size: clamp(18px, 2.6vw, 21px);
  font-weight: 900;
  margin: 0 0 14px;
}

.legal-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.legal-links li {
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(243, 247, 242, .8);
  border-left: 2px solid var(--moss);
  padding-left: 12px;
}

.legal-links li:hover {
  border-left-color: var(--lime);
}

@media (min-width: 900px) {
  .contact-split {
    grid-template-columns: 45fr 55fr;
    align-items: stretch;
  }

  .contact-collab {
    grid-template-columns: 1.05fr .95fr;
    align-items: center;
  }

  .contact-legal {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 760px) {
  .modes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1200px) {
  .contact-board {
    min-height: 460px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .check-list__label,
  .page-contact .mode {
    transition: none;
  }

  .page-contact .check-list__label:hover,
  .page-contact .mode:hover {
    transform: none;
  }
}