/* ==========================================================================
   page-contact — 商务合作
   作用域：.page-contact
   ========================================================================== */

.page-contact {
  --pc-hair: 1px;
  --pc-pad: clamp(18px, 2.6vw, 32px);
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-sans);
}

.page-contact [data-reveal] {
  opacity: 1;
}

.page-contact [data-reveal][data-revealed] {
  animation: pc-rise .55s cubic-bezier(.22, .7, .3, 1) both;
}

@keyframes pc-rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact [data-reveal][data-revealed] {
    animation: none;
  }
}

.page-contact .section-head {
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

/* --------------------------------------------------------------------------
   首屏：左叙事 / 右刻度
   -------------------------------------------------------------------------- */

.page-contact .coop-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(38px, 6vw, 92px) clamp(34px, 5vw, 76px);
  border-bottom: var(--pc-hair) solid var(--line);
  background:
    radial-gradient(1100px 440px at 76% -12%, rgba(79, 240, 200, .10), transparent 62%),
    radial-gradient(720px 340px at 102% 4%, rgba(242, 180, 65, .08), transparent 58%),
    var(--ink);
}

.page-contact .coop-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .26;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 100px 100px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .25) 72%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .25) 72%, transparent 100%);
}

.page-contact .coop-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(34px, 5vw, 60px);
}

.page-contact .coop-hero__lead {
  min-width: 0;
}

.page-contact .coop-hero h1 {
  margin: 18px 0 0;
  max-width: 15ch;
  font-size: var(--step-4);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-contact .coop-hero__intro {
  margin: 22px 0 0;
  max-width: 54ch;
  font-size: var(--step-1);
  line-height: 1.85;
  color: var(--text);
}

.page-contact .coop-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 26px 0 0;
}

.page-contact .coop-fact {
  font-family: var(--font-num);
  font-size: var(--step--1);
  letter-spacing: .06em;
  color: var(--muted);
  border-left: 2px solid var(--line-strong);
  padding-left: 12px;
}

.page-contact .coop-fact b {
  display: inline-block;
  margin-right: 4px;
  font-size: var(--step-2);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-contact .direction-index {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: var(--pc-hair);
  background: var(--line);
  border: var(--pc-hair) solid var(--line);
  max-width: 560px;
}

.page-contact .direction-index li {
  background: rgba(4, 18, 15, .84);
}

.page-contact .direction-index a {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  text-decoration: none;
  color: var(--text);
  transition: background .2s ease, color .2s ease;
}

.page-contact .direction-index a:hover,
.page-contact .direction-index a:focus-visible {
  background: var(--hover);
  color: var(--cyan);
  outline: none;
}

.page-contact .direction-index__num {
  font-family: var(--font-num);
  font-size: var(--step--1);
  letter-spacing: .1em;
  color: var(--amber);
}

.page-contact .direction-index__text {
  font-size: var(--step-0);
  font-weight: 600;
  letter-spacing: .01em;
}

.page-contact .direction-index__arrow {
  font-family: var(--font-num);
  color: var(--muted);
  transition: transform .2s ease, color .2s ease;
}

.page-contact .direction-index a:hover .direction-index__arrow,
.page-contact .direction-index a:focus-visible .direction-index__arrow {
  transform: translateX(4px);
  color: var(--cyan);
}

/* 刻度图 */

.page-contact .coop-hero__scale {
  position: relative;
  align-self: start;
  padding: clamp(20px, 3vw, 34px);
  border: var(--pc-hair) solid var(--line);
  background: linear-gradient(180deg, var(--panel) 0%, var(--ink) 96%);
}

.page-contact .coop-hero__scale::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--amber) 58%, transparent);
}

.page-contact .flow-scale__head {
  margin: 0;
  font-family: var(--font-num);
  font-size: var(--step--1);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .flow-scale__list {
  position: relative;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-contact .flow-scale__list::before {
  content: "";
  position: absolute;
  left: 28px;
  top: 10px;
  bottom: 16px;
  width: var(--pc-hair);
  background: linear-gradient(180deg, var(--cyan) 0%, var(--amber) 55%, var(--line-strong) 100%);
}

.page-contact .flow-scale__item {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  align-items: start;
  padding: 11px 0;
}

.page-contact .flow-scale__mark {
  justify-self: center;
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  font-family: var(--font-num);
  font-size: var(--step-1);
  font-weight: 700;
  color: var(--amber);
  background: var(--ink);
  border: var(--pc-hair) solid var(--line-strong);
  font-variant-numeric: tabular-nums;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-contact .flow-scale__item:hover .flow-scale__mark {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .flow-scale__body {
  display: grid;
  gap: 4px;
  padding-top: 4px;
  min-width: 0;
}

.page-contact .flow-scale__name {
  font-size: var(--step-1);
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--white);
}

.page-contact .flow-scale__desc {
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .flow-scale__foot {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: var(--pc-hair) solid var(--line);
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   视觉容器
   -------------------------------------------------------------------------- */

.page-contact .coop-visual {
  margin: 0 0 clamp(26px, 3.6vw, 48px);
}

/* --------------------------------------------------------------------------
   四类合作方向
   -------------------------------------------------------------------------- */

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-hair);
  background: var(--line);
  border: var(--pc-hair) solid var(--line);
}

.page-contact .coop-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: var(--pc-pad);
  background: var(--ink);
  transition: background .25s ease, box-shadow .25s ease;
}

.page-contact .coop-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 0;
  background: var(--cyan);
  transition: height .32s ease;
}

.page-contact .coop-card:hover::before,
.page-contact .coop-card:focus-within::before {
  height: 100%;
}

.page-contact .coop-card:hover,
.page-contact .coop-card:focus-within {
  background: var(--panel);
}

.page-contact .coop-card__num {
  margin: 0;
  font-family: var(--font-num);
  font-size: var(--step--1);
  letter-spacing: .16em;
  color: var(--amber);
}

.page-contact .coop-card__title {
  margin: 0;
  font-size: var(--step-2);
  font-weight: 800;
  letter-spacing: .005em;
  color: var(--white);
}

.page-contact .coop-card__desc {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.85;
  color: var(--text);
}

.page-contact .coop-card__fit {
  display: grid;
  gap: 4px;
  margin-top: 4px;
  padding-top: 14px;
  border-top: var(--pc-hair) solid var(--line);
}

.page-contact .coop-card__fit p {
  margin: 0 0 8px;
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .coop-card__label {
  font-family: var(--font-num);
  font-size: var(--step--1);
  letter-spacing: .14em;
  color: var(--cyan);
}

@media (hover: hover) and (min-width: 900px) {
  .page-contact .coop-card__fit {
    max-height: 0;
    margin-top: 0;
    padding-top: 0;
    opacity: 0;
    overflow: hidden;
    border-top-color: transparent;
    transition: max-height .4s ease, opacity .28s ease, margin-top .4s ease,
      padding-top .4s ease, border-top-color .4s ease;
  }

  .page-contact .coop-card:hover .coop-card__fit,
  .page-contact .coop-card:focus-within .coop-card__fit {
    max-height: 260px;
    margin-top: 6px;
    padding-top: 14px;
    opacity: 1;
    border-top-color: var(--line);
  }
}

/* --------------------------------------------------------------------------
   合作流程四步（纯 CSS 单选切换）
   -------------------------------------------------------------------------- */

.page-contact .flow-switch {
  position: relative;
  border: var(--pc-hair) solid var(--line);
  background: var(--ink);
}

.page-contact .flow-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
}

.page-contact .flow-tabs {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-hair);
  background: var(--line);
}

.page-contact .flow-tab {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px clamp(14px, 2vw, 22px);
  background: var(--ink);
  cursor: pointer;
  border-top: 2px solid transparent;
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}

.page-contact .flow-tab:hover {
  background: var(--hover);
}

.page-contact .flow-tab__num {
  font-family: var(--font-num);
  font-size: var(--step--1);
  letter-spacing: .12em;
  color: var(--muted);
  transition: color .2s ease;
}

.page-contact .flow-tab__name {
  font-size: var(--step-1);
  font-weight: 700;
  color: var(--text);
  transition: color .2s ease;
}

.page-contact #flow-s1:checked ~ .flow-tabs [for="flow-s1"],
.page-contact #flow-s2:checked ~ .flow-tabs [for="flow-s2"],
.page-contact #flow-s3:checked ~ .flow-tabs [for="flow-s3"],
.page-contact #flow-s4:checked ~ .flow-tabs [for="flow-s4"] {
  background: var(--panel-2);
  border-top-color: var(--cyan);
}

.page-contact #flow-s1:checked ~ .flow-tabs [for="flow-s1"] .flow-tab__num,
.page-contact #flow-s2:checked ~ .flow-tabs [for="flow-s2"] .flow-tab__num,
.page-contact #flow-s3:checked ~ .flow-tabs [for="flow-s3"] .flow-tab__num,
.page-contact #flow-s4:checked ~ .flow-tabs [for="flow-s4"] .flow-tab__num {
  color: var(--amber);
}

.page-contact #flow-s1:checked ~ .flow-tabs [for="flow-s1"] .flow-tab__name,
.page-contact #flow-s2:checked ~ .flow-tabs [for="flow-s2"] .flow-tab__name,
.page-contact #flow-s3:checked ~ .flow-tabs [for="flow-s3"] .flow-tab__name,
.page-contact #flow-s4:checked ~ .flow-tabs [for="flow-s4"] .flow-tab__name {
  color: var(--white);
}

.page-contact .flow-radio:focus-visible + .flow-tabs {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .flow-panels {
  padding: clamp(22px, 3.2vw, 40px);
}

.page-contact .flow-panel {
  display: none;
}

.page-contact #flow-s1:checked ~ .flow-panels .flow-panel[data-step="1"],
.page-contact #flow-s2:checked ~ .flow-panels .flow-panel[data-step="2"],
.page-contact #flow-s3:checked ~ .flow-panels .flow-panel[data-step="3"],
.page-contact #flow-s4:checked ~ .flow-panels .flow-panel[data-step="4"] {
  display: block;
  animation: pc-rise .4s ease both;
}

.page-contact .flow-panel__period {
  display: inline-block;
  margin: 0 0 16px;
  padding: 5px 12px;
  font-family: var(--font-num);
  font-size: var(--step--1);
  letter-spacing: .08em;
  color: var(--ink);
  background: var(--amber);
}

.page-contact .flow-panel__text {
  margin: 0;
  max-width: 68ch;
  font-size: var(--step-1);
  line-height: 1.85;
  color: var(--text);
}

.page-contact .flow-panel__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 68ch;
}

.page-contact .flow-panel__list li {
  position: relative;
  padding-left: 22px;
  font-size: var(--step-0);
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .flow-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 12px;
  height: var(--pc-hair);
  background: var(--cyan);
}

/* --------------------------------------------------------------------------
   材料清单
   -------------------------------------------------------------------------- */

.page-contact .material-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 22px);
}

.page-contact .material-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .material-list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--pc-hair) solid var(--line);
}

.page-contact .material-list li {
  padding: 11px 0;
  border-bottom: var(--pc-hair) solid var(--line);
  font-size: var(--step-0);
  line-height: 1.7;
  color: var(--text);
}

.page-contact .material-list li::before {
  content: "—";
  margin-right: 10px;
  font-family: var(--font-num);
  color: var(--amber);
}

/* --------------------------------------------------------------------------
   联系方式
   -------------------------------------------------------------------------- */

.page-contact .contact-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 44px);
}

.page-contact .contact-table {
  margin: 0;
  border: var(--pc-hair) solid var(--line);
  background: var(--panel);
}

.page-contact .contact-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: clamp(16px, 2.2vw, 24px);
  border-bottom: var(--pc-hair) solid var(--line);
}

.page-contact .contact-row:last-child {
  border-bottom: 0;
}

.page-contact .contact-key {
  font-family: var(--font-num);
  font-size: var(--step--1);
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-contact .contact-val {
  margin: 0;
  display: grid;
  gap: 6px;
  min-width: 0;
}

.page-contact .contact-value {
  display: inline-block;
  max-width: 100%;
  font-family: var(--font-num);
  font-size: var(--step-1);
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
  word-break: break-word;
  user-select: all;
  cursor: text;
  border-bottom: var(--pc-hair) dashed var(--line-strong);
  transition: color .2s ease, border-color .2s ease;
}

.page-contact .contact-value:hover,
.page-contact .contact-value:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  outline: none;
}

.page-contact .contact-use {
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-aside {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(20px, 2.6vw, 30px);
  border: var(--pc-hair) solid var(--line);
  background:
    linear-gradient(155deg, rgba(79, 240, 200, .07) 0%, transparent 58%),
    var(--ink);
}

.page-contact .contact-aside__lead {
  margin: 0;
  font-size: var(--step-2);
  font-weight: 800;
  line-height: 1.5;
  color: var(--white);
}

.page-contact .contact-aside__body {
  margin: 0 0 8px;
  font-size: var(--step-0);
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-aside .btn {
  align-self: flex-start;
}

/* --------------------------------------------------------------------------
   响应节奏
   -------------------------------------------------------------------------- */

.page-contact .rhythm-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: var(--pc-hair) solid var(--line);
}

.page-contact .rhythm-item {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px) 0;
  border-bottom: var(--pc-hair) solid var(--line);
}

.page-contact .rhythm-item__num {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: var(--step--1);
  letter-spacing: .16em;
  color: var(--amber);
}

.page-contact .rhythm-item__title {
  margin: 0 0 10px;
  font-size: var(--step-1);
  font-weight: 800;
  line-height: 1.4;
  color: var(--white);
}

.page-contact .rhythm-item__text {
  margin: 0;
  max-width: 58ch;
  font-size: var(--step-0);
  line-height: 1.85;
  color: var(--text);
}

.page-contact .rhythm-item::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 2px;
  background: var(--cyan);
  transition: width .4s ease;
}

.page-contact .rhythm-item:hover::after {
  width: 68px;
}

/* --------------------------------------------------------------------------
   常见问题
   -------------------------------------------------------------------------- */

.page-contact .faq-list {
  display: grid;
  gap: var(--pc-hair);
  background: var(--line);
  border: var(--pc-hair) solid var(--line);
}

.page-contact .faq-item {
  padding: var(--pc-pad);
  background: var(--ink);
  transition: background .22s ease;
}

.page-contact .faq-item:hover {
  background: var(--panel);
}

.page-contact .faq-item__q {
  margin: 0 0 12px;
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: var(--step-1);
  font-weight: 800;
  line-height: 1.5;
  color: var(--white);
}

.page-contact .faq-item__q::before {
  content: "Q";
  font-family: var(--font-num);
  font-size: var(--step--1);
  letter-spacing: .1em;
  color: var(--amber);
}

.page-contact .faq-item__a {
  margin: 0;
  padding-left: 26px;
  max-width: 72ch;
  font-size: var(--step-0);
  line-height: 1.9;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   归档尾
   -------------------------------------------------------------------------- */

.page-contact .coop-tail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 22px;
  margin-top: clamp(30px, 4vw, 52px);
  padding-top: clamp(24px, 3vw, 36px);
  border-top: var(--pc-hair) solid var(--line-strong);
}

.page-contact .coop-tail__text {
  flex: 1 1 320px;
  margin: 0;
  max-width: 52ch;
  font-size: var(--step-1);
  line-height: 1.8;
  color: var(--text);
}

.page-contact .coop-tail__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* --------------------------------------------------------------------------
   断点：平板
   -------------------------------------------------------------------------- */

@media (min-width: 760px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .material-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .flow-tabs {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .contact-row {
    grid-template-columns: minmax(140px, 190px) 1fr;
    gap: 20px;
    align-items: start;
  }

  .page-contact .rhythm-grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: clamp(24px, 3.4vw, 52px);
  }
}

/* --------------------------------------------------------------------------
   断点：桌面
   -------------------------------------------------------------------------- */

@media (min-width: 960px) {
  .page-contact .coop-hero__inner {
    grid-template-columns: 1.1fr .9fr;
    align-items: start;
  }

  .page-contact .coop-hero h1 {
    max-width: 13ch;
  }

  .page-contact .contact-split {
    grid-template-columns: 1.25fr .75fr;
    align-items: start;
  }

  .page-contact .coop-tail {
    flex-wrap: nowrap;
    justify-content: space-between;
  }

  .page-contact .coop-tail__links {
    flex: 0 0 auto;
  }
}

@media (min-width: 1100px) {
  .page-contact .material-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --------------------------------------------------------------------------
   窄屏兜底
   -------------------------------------------------------------------------- */

@media (max-width: 420px) {
  .page-contact .coop-hero__facts {
    gap: 8px 16px;
  }

  .page-contact .faq-item__a {
    padding-left: 0;
  }

  .page-contact .flow-panel__list li {
    padding-left: 18px;
  }
}
<<<END>>>