/* 解决方案总页 - solution.html (设计基准 1920px) */

:root {
  --sol-primary: #14126f;
  --sol-accent: #1bb8ce;
  --sol-text: #333333;
  --sol-text-muted: #666666;
  --sol-text-light: #999999;
  --sol-font-hero: clamp(32px, 3.125vw, 60px);
  --sol-font-section: clamp(24px, 2.083vw, 40px);
  --sol-font-card: clamp(18px, 1.25vw, 24px);
}

.site-main--solution {
  min-height: auto;
}

/* ========== Hero ========== */

.sol-hero {
  position: relative;
  min-height: clamp(320px, 33.854vw, 650px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #0a1a4a;
}

.sol-hero__bg {
  position: absolute;
  inset: 0;
}

.sol-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.sol-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(10, 26, 74, 0.55) 0%,
    rgba(10, 26, 74, 0.15) 55%,
    rgba(10, 26, 74, 0.05) 100%
  );
}

.sol-hero__inner {
  position: relative;
  z-index: 1;
  padding: clamp(48px, 5.208vw, 100px) 0;
}

.sol-hero__title {
  margin: 0;
  max-width: 12em;
  font-size: var(--sol-font-hero);
  font-weight: 600;
  line-height: 1.2;
  color: #ffffff;
}

.sol-hero__desc {
  margin: clamp(16px, 1.458vw, 28px) 0 0;
  max-width: 28em;
  font-size: clamp(14px, 0.9375vw, 18px);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.92);
}

.sol-hero__scroll {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: clamp(48px, 3.125vw, 60px);
  height: clamp(48px, 3.125vw, 60px);
  margin-top: clamp(28px, 2.5vw, 48px);
  color: var(--sol-primary);
  background: #ffffff;
  border: none;
  border-radius: 50%;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.sol-hero__scroll:hover {
  transform: translateY(3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.14);
}

.sol-hero__scroll-icon {
  display: block;
  width: clamp(14px, 0.885vw, 17px);
  height: clamp(14px, 0.885vw, 17px);
}

/* ========== Intro ========== */

.sol-intro {
  padding: clamp(56px, 5.208vw, 100px) 0 clamp(48px, 4.167vw, 80px);
  background: #ffffff;
  text-align: center;
}

.sol-intro__title {
  margin: 0;
  font-size: var(--sol-font-section);
  font-weight: 600;
  line-height: 1.3;
  color: var(--sol-text);
}

.sol-intro__desc {
  margin: clamp(20px, 1.667vw, 32px) auto 0;
  max-width: 52em;
  font-size: clamp(14px, 0.9375vw, 18px);
  line-height: 1.9;
  color: var(--sol-text-muted);
}

/* ========== Process ========== */

.sol-process {
  position: relative;
  padding: clamp(56px, 5.208vw, 100px) 0 clamp(64px, 5.729vw, 110px);
  overflow: hidden;
}

.sol-process__bg {
  position: absolute;
  inset: 0;
}

.sol-process__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.sol-process__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.12);
}

.sol-process__inner {
  position: relative;
  z-index: 1;
}

.sol-process__head {
  max-width: 46em;
  margin-bottom: clamp(32px, 3.125vw, 60px);
}

.sol-process__title {
  margin: 0;
  font-size: var(--sol-font-section);
  font-weight: 600;
  line-height: 1.35;
  color: #000;
}

.sol-process__desc {
  margin: clamp(14px, 1.042vw, 20px) 0 0;
  font-size: clamp(14px, 0.9375vw, 18px);
  line-height: 1.8;
  color: rgba(0, 0, 0, 0.88);
}

.sol-process__cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 1.667vw, 32px);
}

.sol-process__card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: clamp(420px, 28.646vw, 550px);
  padding: clamp(28px, 2.083vw, 40px) clamp(24px, 1.875vw, 36px)
    clamp(32px, 2.083vw, 40px);
  border-radius: clamp(16px, 1.25vw, 24px);
}

.sol-process__card--challenge {
  background: #ffffff;
  color: var(--sol-text);
}

.sol-process__card--needs {
  background: var(--sol-accent);
  color: #ffffff;
}

.sol-process__card--solution {
  background: var(--sol-primary);
  color: #ffffff;
}

.sol-process__icon {
  width: clamp(48px, 3.333vw, 64px);
  height: clamp(48px, 3.333vw, 64px);
  margin-bottom: clamp(16px, 1.25vw, 24px);
}

.sol-process__card-title {
  margin: 0 0 clamp(20px, 1.667vw, 32px);
  font-size: var(--sol-font-card);
  font-weight: 600;
  line-height: 1.35;
}

.sol-process__list {
  display: flex;
  flex-direction: column;
  gap: clamp(10px, 0.833vw, 16px);
  flex: 1;
}

.sol-process__item {
  display: flex;
  align-items: flex-start;
  gap: clamp(8px, 0.625vw, 12px);
  font-size: clamp(13px, 0.8333vw, 16px);
  line-height: 1.6;
}

.sol-process__check {
  flex-shrink: 0;
  width: clamp(18px, 1.25vw, 24px);
  height: clamp(18px, 1.25vw, 24px);
  margin-top: 0.1em;
  border-radius: 50%;
  background: var(--sol-primary)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='M2.5 6.2 5 8.7 9.5 3.8' stroke='%23fff' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")
    center / 62% no-repeat;
}

.sol-process__card--needs .sol-process__check,
.sol-process__card--solution .sol-process__check {
  background-color: rgba(255, 255, 255, 0.22);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='M2.5 6.2 5 8.7 9.5 3.8' stroke='%23fff' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

.sol-process__arrow {
  position: absolute;
  top: 50%;
  right: clamp(-18px, 1.042vw, 55px);
  z-index: 2;
  width: clamp(28px, 2.083vw, 40px);
  height: auto;
  transform: translateY(-50%);
  pointer-events: none;
}

.sol-process__card--solution .sol-process__arrow {
  display: none;
}

/* ========== Fields ========== */

.sol-fields {
  padding: clamp(56px, 5.208vw, 100px) 0 clamp(64px, 5.729vw, 110px);
  background: #ffffff;
}

.sol-fields__title {
  margin: 0 0 clamp(32px, 2.917vw, 56px);
  font-size: var(--sol-font-section);
  font-weight: 600;
  line-height: 1.3;
  color: var(--sol-text);
}

.sol-fields__grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: clamp(24px, 2.083vw, 40px) clamp(20px, 1.667vw, 32px);
}

.sol-field-card {
  grid-column: span 2;
}

.sol-field-card__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
  text-decoration: none;
  background: #ffffff;
  border: 1px solid #e8e8e8;
  transition:
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.sol-field-card__link:hover {
  border-color: #d8d8d8;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.sol-field-card__media {
  overflow: hidden;
  aspect-ratio: 992 / 604;
}

.sol-field-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.sol-field-card__link:hover .sol-field-card__media img {
  transform: scale(1.03);
}

.sol-field-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: clamp(20px, 1.667vw, 32px);
}

.sol-field-card__name {
  margin: 0;
  font-size: clamp(18px, 1.25vw, 24px);
  font-weight: 600;
  line-height: 1.35;
  color: var(--sol-text);
}

.sol-field-card__name-cn {
  font-weight: 600;
  color: var(--sol-text);
}

.sol-field-card__desc {
  flex: 1;
  margin: clamp(12px, 0.833vw, 16px) 0 0;
  font-size: clamp(13px, 0.8333vw, 16px);
  line-height: 1.75;
  color: var(--sol-text-muted);
}

.sol-field-card__arrow {
  display: block;
  margin-top: clamp(20px, 1.667vw, 32px);
}

.sol-field-card__arrow img {
  display: block;
  width: clamp(28px, 1.771vw, 34px);
  height: auto;
}

/* ========== Contact ========== */

.sol-contact {
  position: relative;
  padding: clamp(64px, 5.729vw, 110px) 0;
  overflow: hidden;
}

.sol-contact__bg {
  position: absolute;
  inset: 0;
}

.sol-contact__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
}

.sol-contact__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.88) 0%,
    rgba(255, 255, 255, 0.78) 45%,
    rgba(255, 255, 255, 0.35) 100%
  );
}

.sol-contact__inner {
  position: relative;
  z-index: 1;
}

.sol-contact__panel {
  max-width: clamp(480px, 40.625vw, 780px);
}

.sol-contact__title {
  margin: 0;
  font-size: var(--sol-font-section);
  font-weight: 600;
  line-height: 1.3;
  color: var(--sol-text);
}

.sol-contact__desc {
  margin: clamp(10px, 0.833vw, 16px) 0 clamp(28px, 2.5vw, 48px);
  font-size: clamp(14px, 0.9375vw, 18px);
  line-height: 1.7;
  color: var(--sol-text-muted);
}

.sol-contact__form {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 1.25vw, 24px);
}

.sol-contact__row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 1.25vw, 24px);
}

.sol-contact__field {
  position: relative;
  display: block;
}

.sol-contact__hint {
  position: absolute;
  top: 50%;
  left: clamp(16px, 1.25vw, 24px);
  z-index: 1;
  font-size: clamp(14px, 0.8333vw, 16px);
  line-height: 1;
  color: #999999;
  pointer-events: none;
  transform: translateY(-50%);
  transition: opacity 0.2s ease;
}

.sol-contact__field:has(.sol-contact__textarea) .sol-contact__hint {
  top: clamp(16px, 1.25vw, 24px);
  transform: none;
}

.sol-contact__req {
  color: #e85555;
}

.sol-contact__input,
.sol-contact__textarea {
  width: 100%;
  padding: clamp(16px, 1.25vw, 24px);
  font: inherit;
  font-size: clamp(14px, 0.8333vw, 16px);
  color: var(--sol-text);
  background: rgb(237, 237, 237);
  border: 1px solid rgb(237, 237, 237);
  border-radius: clamp(8px, 0.625vw, 12px);
  outline: none;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.sol-contact__select {
  width: 100%;
  padding: clamp(16px, 1.25vw, 24px);
  padding-right: clamp(40px, 2.5vw, 48px);
  font: inherit;
  font-size: clamp(14px, 0.8333vw, 16px);
  color: var(--sol-text);
  background-color: rgb(237, 237, 237);
  border: 1px solid rgb(237, 237, 237);
  border-radius: clamp(8px, 0.625vw, 12px);
  outline: none;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.sol-contact__input:focus,
.sol-contact__textarea:focus {
  border-color: rgb(237, 237, 237);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.sol-contact__select:focus {
  background-color: rgb(237, 237, 237);
  border-color: rgb(237, 237, 237);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.sol-contact__input:focus + .sol-contact__hint,
.sol-contact__input:not(:placeholder-shown) + .sol-contact__hint,
.sol-contact__textarea:focus + .sol-contact__hint,
.sol-contact__textarea:not(:placeholder-shown) + .sol-contact__hint,
.sol-contact__select:focus + .sol-contact__hint,
.sol-contact__select:valid + .sol-contact__hint {
  opacity: 0;
}

.sol-contact__select {
  appearance: none;
  color: var(--sol-text);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5' stroke='%23666' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right clamp(16px, 1.25vw, 24px) center;
}

.sol-contact__select:invalid {
  color: transparent;
}

.sol-contact__textarea {
  min-height: clamp(140px, 9.375vw, 180px);
  resize: vertical;
}

.sol-contact__submit {
  align-self: flex-start;
  margin-top: clamp(4px, 0.521vw, 12px);
  border: none;
  cursor: pointer;
}

/* ========== Responsive ========== */

@media (max-width: 1200px) {
  .sol-process__cards {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
  }

  .sol-process__card {
    min-height: auto;
  }

  .sol-process__arrow {
    top: auto;
    right: auto;
    bottom: clamp(-22px, -2vw, -14px);
    left: 50%;
    transform: translateX(-50%) rotate(90deg);
  }

  .sol-process__card--solution .sol-process__arrow {
    display: none;
  }

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

  .sol-field-card {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  .sol-hero__overlay {
    background: rgba(10, 26, 74, 0.45);
  }

  .sol-fields__grid {
    grid-template-columns: 1fr;
  }

  .sol-contact__row {
    grid-template-columns: 1fr;
  }

  .sol-contact__overlay {
    background: rgba(255, 255, 255, 0.94);
  }

  .sol-contact__panel {
    max-width: none;
  }
}