.page-contact {
  --cc-radius: 2px;
  --cc-gap: clamp(18px, 3vw, 34px);
  --cc-form-ink: #0B1F19;
  background: var(--ink-900);
  color: var(--paper);
  padding-bottom: clamp(40px, 7vw, 90px);
  overflow-x: hidden;
}

.page-contact img {
  display: block;
  max-width: 100%;
}

.page-contact a {
  color: inherit;
}

/* ===== 首屏 ===== */
.cc-hero {
  padding: clamp(20px, 4vw, 46px) 0 clamp(34px, 5vw, 68px);
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(
    180deg,
    rgba(31, 74, 63, 0.26) 0 1px,
    transparent 1px 64px
  );
}

.cc-hero__grid {
  display: grid;
  gap: var(--cc-gap);
  margin-top: clamp(18px, 3vw, 32px);
}

.cc-hero__title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5.4vw, 72px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  color: var(--paper);
  text-wrap: balance;
}

.cc-lead {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

.cc-quick {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.cc-quick li {
  background: var(--ink-800);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
}

.cc-quick__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sand);
}

.cc-quick__v {
  font-size: 14px;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.cc-quick__hint {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.cc-quick__jump {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 168, 0.4);
  padding-bottom: 1px;
}

.cc-quick__jump:hover,
.cc-quick__jump:focus-visible {
  border-bottom-color: var(--signal);
}

.cc-copyline {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.cc-copy {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 4px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--signal);
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.cc-copy:hover,
.cc-copy:focus-visible {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink-900);
  outline: none;
}

.cc-copied {
  font-size: 11px;
  color: var(--signal);
  letter-spacing: 0.06em;
}

.cc-hero__figure {
  margin: 0;
}

/* ===== 章节骨架 ===== */
.cc-section {
  padding: clamp(40px, 6vw, 82px) 0;
}

.cc-section--band {
  background: var(--ink-800);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.cc-head {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(22px, 3.4vw, 42px);
}

.cc-head__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--sand);
}

.cc-head__title {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--paper);
}

.cc-head__desc {
  margin: 0;
  max-width: 52em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ===== 通道 + 表单 ===== */
.cc-channels__grid {
  display: grid;
  gap: var(--cc-gap);
}

.cc-channels__list {
  display: grid;
  gap: 14px;
}

.cc-channel {
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--line);
  padding: 18px 18px 18px 24px;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.cc-channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cc-accent, var(--signal));
}

.cc-channel--mail {
  --cc-accent: var(--signal);
}

.cc-channel--phone {
  --cc-accent: var(--sand);
}

.cc-channel--form {
  --cc-accent: var(--signal-deep);
}

.cc-channel:hover,
.cc-channel:focus-within {
  background: var(--ink-700);
  border-color: var(--cc-accent);
}

.cc-channel__top {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.cc-channel__icon {
  color: var(--cc-accent, var(--signal));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line);
  flex: 0 0 auto;
}

.cc-channel__title {
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--paper);
}

.cc-channel__tag {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 3px 8px;
  white-space: nowrap;
}

.cc-channel__value {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.7vw, 17px);
  color: var(--cc-accent, var(--signal));
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.cc-channel__fit {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
}

.cc-channel__list-detail {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.cc-channel__list-detail li {
  position: relative;
  padding-left: 15px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.cc-channel__list-detail li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 1px;
  background: var(--cc-accent, var(--signal));
}

.cc-channel__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ===== 反馈表单（纸张叠层） ===== */
.cc-form-card {
  position: relative;
  background: var(--paper);
  color: var(--cc-form-ink);
  border: 1px solid var(--line);
  padding: clamp(20px, 3vw, 30px);
}

.cc-form-card::before {
  content: "";
  position: absolute;
  inset: 0;
  transform: translate(8px, 8px);
  background: rgba(232, 197, 122, 0.14);
  border: 1px solid var(--line);
  z-index: 0;
}

.cc-form-card > * {
  position: relative;
  z-index: 1;
}

.cc-form__head {
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 2px solid var(--cc-form-ink);
}

.cc-form__no {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--signal-deep);
  margin: 0;
}

.cc-form__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.8vw, 28px);
  font-weight: 800;
  letter-spacing: -0.015em;
  margin: 6px 0 0;
  color: var(--cc-form-ink);
}

.cc-form__sub {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(11, 31, 25, 0.66);
}

.cc-field {
  margin-bottom: 16px;
}

.cc-field__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--signal-deep);
  margin-bottom: 5px;
}

.cc-input,
.cc-select,
.cc-textarea {
  width: 100%;
  box-sizing: border-box;
  background: transparent;
  border: 0;
  border-bottom: 1px solid rgba(11, 31, 25, 0.3);
  border-radius: 0;
  padding: 7px 2px;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--cc-form-ink);
}

.cc-textarea {
  resize: vertical;
  min-height: 88px;
  border: 1px solid rgba(11, 31, 25, 0.24);
  padding: 9px 10px;
}

.cc-input::placeholder,
.cc-textarea::placeholder {
  color: rgba(11, 31, 25, 0.42);
}

.cc-input:focus,
.cc-select:focus,
.cc-textarea:focus {
  outline: none;
  border-color: var(--signal-deep);
  box-shadow: 0 1px 0 0 var(--signal-deep);
}

.cc-select {
  cursor: pointer;
}

.cc-submit {
  width: 100%;
  margin-top: 6px;
  justify-content: center;
}

.cc-form__note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.75;
  color: rgba(11, 31, 25, 0.66);
}

.cc-form__note a {
  color: var(--signal-deep);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ===== 响应时段 ===== */
.cc-timing__layout {
  display: grid;
  gap: var(--cc-gap);
}

.cc-facts {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.cc-fact {
  background: var(--ink-900);
  padding: 17px 18px;
}

.cc-fact__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.cc-fact__v {
  margin: 7px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.3vw, 26px);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.cc-fact__d {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.cc-timing__figure {
  margin: 0;
}

/* ===== 信息清单 ===== */
.cc-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.cc-check {
  background: var(--ink-900);
  padding: 18px;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 4px 14px;
}

.cc-check__no {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--sand);
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}

.cc-check__body h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--paper);
}

.cc-check__body p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

.cc-check__body .cc-check__why {
  margin-top: 8px;
  padding-left: 11px;
  border-left: 2px solid var(--signal-deep);
  color: var(--paper);
  font-size: 13px;
}

/* ===== 合作与线索 ===== */
.cc-partner__grid {
  display: grid;
  gap: var(--cc-gap);
}

.cc-partner__lead {
  margin: 14px 0 22px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.cc-partner__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.cc-partner__item {
  background: var(--ink-800);
  padding: 17px 18px;
}

.cc-partner__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sand);
}

.cc-partner__d {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--muted);
}

.cc-partner__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
  padding-top: clamp(18px, 3vw, 26px);
  border-top: 1px solid var(--line);
}

/* ===== 站点信息 ===== */
.cc-siteinfo {
  border-top: 1px solid var(--line);
}

.cc-record {
  margin: 0;
  border-top: 1px solid var(--line);
}

.cc-record__row {
  display: grid;
  gap: 5px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.cc-record dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.cc-record dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .cc-quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .cc-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cc-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .cc-hero__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: end;
  }

  .cc-head {
    grid-template-columns: 56px minmax(0, 1fr);
    grid-template-areas:
      "no title"
      "no desc";
    column-gap: 20px;
  }

  .cc-head__no {
    grid-area: no;
    padding-top: 0.55em;
  }

  .cc-head__title {
    grid-area: title;
  }

  .cc-head__desc {
    grid-area: desc;
  }

  .cc-timing__layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .cc-partner__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .cc-record__row {
    grid-template-columns: 170px minmax(0, 1fr);
    align-items: baseline;
    gap: 24px;
  }
}

@media (min-width: 1000px) {
  .cc-channels__grid {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.82fr);
    align-items: start;
  }

  .cc-form-card {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
  }
}

@media (min-width: 1200px) {
  .cc-checklist-section .cc-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .cc-channel,
  .cc-copy {
    transition: none;
  }
}