@font-face {
  font-family: "Chengwu Sans";
  src: url("/assets/Poppins-Regular.woff2") format("woff2");
  font-display: swap;
  font-weight: 400;
}

@font-face {
  font-family: "Chengwu Sans";
  src: url("/assets/Poppins-SemiBold.woff2") format("woff2");
  font-display: swap;
  font-weight: 600;
}

:root {
  color: #f3f5fb;
  background: var(--site-background);
  font-family: "Chengwu Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--site-background);
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 76% 17%, rgba(54, 75, 190, 0.06), transparent 34rem),
    var(--site-background);
}

a {
  color: inherit;
  text-decoration: none;
}

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

a:focus-visible {
  outline: 2px solid #5e8eff;
  outline-offset: 4px;
}

.case-detail-main {
  position: relative;
  padding: clamp(14px, 1.2vw, 22px) 0 clamp(64px, 6vw, 96px);
  overflow: hidden;
}

.case-detail-main::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(69, 111, 163, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(69, 111, 163, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, #000, transparent 86%);
}

.case-document {
  width: min(1794px, calc(100vw - 36px));
  margin-inline: auto;
  padding-bottom: 20px;
  border: 1px solid rgba(67, 107, 174, 0.28);
  border-radius: 12px;
  overflow: hidden;
  background:
    radial-gradient(circle at 76% 22%, rgba(32, 56, 139, 0.1), transparent 34%),
    rgba(2, 7, 18, 0.68);
  box-shadow: inset 0 0 80px rgba(23, 50, 107, 0.025);
}

.case-breadcrumb {
  min-height: 66px;
  padding: 0 clamp(28px, 2.3vw, 44px);
  border-bottom: 1px solid rgba(93, 125, 177, 0.2);
  display: flex;
  align-items: center;
  gap: 16px;
  color: rgba(223, 229, 242, 0.74);
  font-size: 14px;
}

.case-breadcrumb a {
  transition: color 180ms ease;
}

.case-breadcrumb a:first-child {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
}

.case-breadcrumb svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.case-breadcrumb > span {
  color: rgba(197, 211, 236, 0.8);
  font-size: 25px;
  font-weight: 300;
  line-height: 1;
}

.case-breadcrumb strong {
  overflow: hidden;
  color: rgba(232, 236, 245, 0.8);
  font-weight: 400;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.case-hero {
  min-height: clamp(380px, 23.6vw, 430px);
  display: grid;
  grid-template-columns: minmax(440px, 0.92fr) minmax(520px, 1.25fr);
}

.case-hero__copy {
  position: relative;
  z-index: 2;
  padding: clamp(56px, 4.3vw, 78px) clamp(36px, 4vw, 74px) 46px;
}

.case-kicker {
  margin: 0 0 18px;
  color: #4d8dff;
  font-size: clamp(12px, 0.82vw, 15px);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.case-kicker b {
  color: #21d4de;
  font-weight: inherit;
}

.case-hero h1 {
  max-width: 9em;
  margin: 0;
  color: rgba(249, 249, 251, 0.98);
  font-size: clamp(45px, 3.45vw, 64px);
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.15;
  text-shadow: 0 0 25px rgba(117, 130, 213, 0.12);
}

.case-lead {
  max-width: 620px;
  margin: 24px 0 0;
  color: rgba(218, 222, 232, 0.76);
  font-size: clamp(14px, 0.94vw, 17px);
  line-height: 1.85;
}

.case-actions {
  width: min(100%, 424px);
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.case-button {
  width: 100%;
  min-width: 0;
  min-height: 50px;
  padding: 0 20px;
  border: 1px solid rgba(91, 130, 255, 0.7);
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  color: #fff;
  background: linear-gradient(112deg, #1769f5, #6650f3);
  box-shadow: 0 12px 32px rgba(32, 69, 218, 0.18);
  font-size: 16px;
  white-space: nowrap;
  transition: border-color 180ms ease, filter 180ms ease, transform 180ms ease;
}

.case-button--quiet {
  border-color: rgba(158, 180, 219, 0.52);
  color: rgba(226, 231, 241, 0.82);
  background: rgba(4, 10, 24, 0.52);
  box-shadow: none;
}

.case-visual {
  position: relative;
  min-width: 0;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #020712;
}

.case-visual::before {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(90deg, #020712 0, rgba(2, 7, 18, 0.6) 10%, transparent 34%),
    linear-gradient(0deg, rgba(2, 7, 18, 0.5), transparent 28%);
}

.case-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(1.08) contrast(1.04);
  transform: scale(1.04);
}

.case-detail-page--osteogenic .case-visual img {
  transform: scale(0.752);
}

.case-visual figcaption {
  position: absolute;
  right: 28px;
  bottom: 18px;
  z-index: 2;
  padding: 9px 14px;
  border: 1px solid rgba(155, 176, 213, 0.26);
  border-radius: 4px;
  color: rgba(226, 230, 239, 0.78);
  background: rgba(3, 8, 20, 0.62);
  font-size: 12px;
  letter-spacing: 0.04em;
  backdrop-filter: blur(8px);
}

.case-structure,
.case-status {
  margin-inline: 30px;
  border: 1px solid rgba(62, 99, 159, 0.23);
  border-radius: 10px;
  background: linear-gradient(110deg, rgba(6, 21, 45, 0.78), rgba(3, 12, 29, 0.76));
}

.case-structure {
  min-height: 190px;
  padding: 36px 42px;
  display: grid;
  grid-template-columns: 334px minmax(0, 1fr);
}

.case-section-heading {
  padding: 12px 42px 0 0;
  border-right: 1px solid rgba(91, 118, 165, 0.24);
}

.case-section-heading p,
.case-status header p {
  margin: 0 0 15px;
  color: rgba(187, 198, 220, 0.84);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.case-section-heading h2,
.case-status h2 {
  margin: 0;
  color: rgba(244, 246, 250, 0.96);
  font-size: clamp(26px, 1.85vw, 34px);
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 1.25;
}

.case-path {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.case-path article {
  min-width: 0;
  padding: 4px clamp(28px, 2.4vw, 48px);
}

.case-path article + article {
  border-left: 1px solid rgba(91, 118, 165, 0.24);
}

.case-path article > span {
  color: #3a8aff;
  font-size: 14px;
  letter-spacing: 0.02em;
}

.case-path article:nth-child(2) > span {
  color: #bd58ff;
}

.case-path article:nth-child(3) > span {
  color: #18d7dc;
}

.case-path h3 {
  margin: 8px 0 0;
  color: rgba(247, 248, 251, 0.94);
  font-size: clamp(19px, 1.35vw, 24px);
  font-weight: 500;
  line-height: 1.3;
}

.case-path p {
  max-width: 310px;
  margin: 7px 0 0;
  color: rgba(210, 216, 229, 0.68);
  font-size: clamp(13px, 0.86vw, 15px);
  line-height: 1.7;
}

.case-status {
  min-height: 126px;
  margin-top: 20px;
  padding: 26px 42px;
  display: grid;
  grid-template-columns: 334px minmax(0, 1fr);
  align-items: center;
}

.case-status header {
  align-self: stretch;
  padding: 2px 42px 0 0;
  border-right: 1px solid rgba(91, 118, 165, 0.24);
}

.case-status header p {
  margin-bottom: 10px;
}

.case-status > div {
  padding-left: 42px;
}

.case-status > div p {
  margin: 0;
  color: rgba(210, 217, 231, 0.72);
  font-size: clamp(14px, 1vw, 18px);
  line-height: 1.6;
}

.case-status strong {
  margin-top: 8px;
  display: block;
  color: #13d1ce;
  font-size: clamp(23px, 1.8vw, 32px);
  font-weight: 400;
  letter-spacing: 0.08em;
}

[data-subpage-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 180ms cubic-bezier(0.22, 1, 0.36, 1), transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

[data-subpage-reveal][data-reveal-direction="up"]:not(.is-visible) {
  transform: translateY(-14px);
}

[data-subpage-reveal].is-visible {
  opacity: 1;
  transform: none;
  transition-duration: 420ms, 560ms;
}

@media (hover: hover) and (pointer: fine) {
  .case-breadcrumb a:hover {
    color: #fff;
  }

  .case-button:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
  }

  .case-button--quiet:hover {
    border-color: rgba(183, 202, 237, 0.76);
  }
}

/* 中等宽度屏幕优先保证文案和双按钮同排，避免固定首屏高度造成内容遮挡。 */
@media (max-width: 1440px) and (min-width: 901px) {
  .case-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .case-hero__copy {
    padding: 48px clamp(36px, 3.2vw, 46px) 38px;
  }

  .case-lead {
    margin-top: 20px;
  }

  .case-actions {
    margin-top: 22px;
  }
}

@media (max-width: 1200px) {
  .case-hero {
    grid-template-columns: minmax(410px, 1fr) minmax(0, 1fr);
  }

  .case-structure,
  .case-status {
    margin-inline: 20px;
    grid-template-columns: 250px minmax(0, 1fr);
  }

  .case-path article {
    padding-inline: 24px;
  }
}

@media (max-width: 900px) {
  .case-document {
    width: min(100% - 28px, 760px);
  }

  .case-hero {
    min-height: 0;
    grid-template-columns: 1fr;
  }

  .case-hero__copy {
    padding: 48px 38px 42px;
  }

  .case-visual {
    height: auto;
    min-height: 360px;
  }

  .case-structure,
  .case-status {
    grid-template-columns: 1fr;
  }

  .case-section-heading,
  .case-status header {
    padding: 0 0 24px;
    border-right: 0;
    border-bottom: 1px solid rgba(91, 118, 165, 0.24);
  }

  .case-path {
    margin-top: 28px;
  }

  .case-path article:first-child {
    padding-left: 0;
  }

  .case-status > div {
    padding: 24px 0 0;
  }
}

@media (max-width: 640px) {
  .case-detail-main {
    padding-top: 10px;
  }

  .case-document {
    width: calc(100% - 20px);
    padding-bottom: 10px;
    border-radius: 9px;
  }

  .case-breadcrumb {
    min-height: 58px;
    padding-inline: 18px;
    gap: 10px;
    font-size: 12px;
  }

  .case-hero__copy {
    padding: 40px 20px 36px;
  }

  .case-hero h1 {
    max-width: none;
    font-size: clamp(38px, 11.4vw, 48px);
    letter-spacing: 0.04em;
  }

  .case-lead {
    font-size: 14px;
    line-height: 1.8;
  }

  .case-actions {
    width: 100%;
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .case-button {
    width: 100%;
    min-width: 0;
  }

  .case-visual {
    min-height: 260px;
  }

  .case-visual figcaption {
    right: 14px;
    bottom: 12px;
  }

  .case-structure,
  .case-status {
    margin-inline: 10px;
    padding: 26px 20px;
  }

  .case-path {
    grid-template-columns: 1fr;
    margin-top: 10px;
  }

  .case-path article,
  .case-path article:first-child {
    padding: 22px 0;
  }

  .case-path article + article {
    border-top: 1px solid rgba(91, 118, 165, 0.24);
    border-left: 0;
  }

  .case-status {
    margin-top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }

  [data-subpage-reveal] {
    opacity: 1;
    transform: none;
  }
}