:root {
  --primary: #2b44d8;
  --primary-deep: #1a2a8f;
  --primary-soft: #e8ecfd;
  --accent: #ffb124;
  --accent-deep: #ef8b00;
  --bg: #f3f5fc;
  --tint: #e9edfb;
  --white: #ffffff;
  --ink: #141a33;
  --muted: #5f6880;
  --line: #e4e9f7;
  --radius: 16px;
  --shadow: 0 18px 42px rgba(20, 26, 51, 0.1);
  --shadow-soft: 0 10px 26px rgba(20, 26, 51, 0.07);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}

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

a {
  color: inherit;
}

ul,
ol {
  list-style: none;
}

button,
input,
textarea {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 32px;
  border: 2px solid transparent;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.28s ease, box-shadow 0.28s ease, background 0.28s ease, color 0.28s ease;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(43, 68, 216, 0.3);
}

html[data-js="true"] [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s ease, transform 0.75s cubic-bezier(0.2, 0.7, 0.3, 1);
}

html[data-js="true"] [data-reveal][data-visible="true"] {
  opacity: 1;
  transform: none;
}

[data-top] {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease;
  z-index: 80;
}

[data-top][data-show="true"] {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

[data-top]:hover {
  background: var(--primary-deep);
}

/* ============ 导航栏 ============ */
.nav-k3d {
  position: sticky;
  top: 0;
  z-index: 95;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

.nav-k3d[data-scrolled="true"] {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 12px 30px rgba(20, 26, 51, 0.08);
}

.nav-k3d > .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 78px;
}

.nav-k3d > .container > a {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 0;
}

.nav-k3d > .container > a img {
  height: 42px;
  width: auto;
  flex: none;
}

.nav-k3d > .container > a span {
  font-size: 14px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: 0.2px;
  line-height: 1.4;
}

.nav-k3d nav ul {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-k3d nav ul li a {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.25s ease;
}

.nav-k3d nav ul li a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav-k3d nav ul li a:hover,
.nav-k3d nav ul li a[data-active="true"] {
  color: var(--primary);
}

.nav-k3d nav ul li a:hover::after,
.nav-k3d nav ul li a[data-active="true"]::after {
  width: 100%;
}

.nav-k3d > .container > button[data-toggle] {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font-size: 16px;
  cursor: pointer;
}

/* ============ Hero ============ */
.hero-k3d {
  position: relative;
  overflow: hidden;
  padding: 168px 0 112px;
  background: #0b1030;
  color: #fff;
  text-align: center;
}

.hero-k3d::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 12, 36, 0.82) 0%, rgba(10, 16, 46, 0.74) 45%, rgba(9, 14, 38, 0.92) 100%);
  z-index: 1;
}

.hero-k3d figure {
  position: absolute;
  inset: 0;
  margin: 0;
}

.hero-k3d figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-k3d figure:nth-of-type(1) {
  animation: heroFade 14s ease-in-out infinite;
}

.hero-k3d figure:nth-of-type(2) {
  animation: heroFade 14s ease-in-out 7s infinite;
}

@keyframes heroFade {
  0% {
    opacity: 0;
  }
  12% {
    opacity: 1;
  }
  88% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

.hero-k3d > .container {
  position: relative;
  z-index: 2;
}

.hero-k3d > .container > p:first-of-type {
  display: inline-block;
  padding: 8px 22px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.6px;
  color: #dfe6ff;
}

.hero-k3d h1 {
  margin: 26px 0 20px;
  font-size: 54px;
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: 1px;
}

.hero-k3d h1 span {
  color: var(--accent);
}

.hero-k3d > .container > p:nth-of-type(2) {
  max-width: 780px;
  margin: 0 auto 34px;
  font-size: 17px;
  color: #cfd6ee;
}

.hero-k3d > .container > div {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.hero-k3d .btn {
  background: var(--accent);
  color: #2a1a00;
}

.hero-k3d .btn:hover {
  background: #ffc250;
  box-shadow: 0 14px 28px rgba(255, 177, 36, 0.32);
}

.hero-k3d div a:nth-of-type(2) {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
}

.hero-k3d div a:nth-of-type(2):hover {
  background: rgba(255, 255, 255, 0.16);
  box-shadow: none;
}

.hero-k3d > .container > ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 58px;
}

.hero-k3d > .container > ul li {
  padding: 22px 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(6px);
}

.hero-k3d > .container > ul li strong {
  display: block;
  font-size: 30px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}

.hero-k3d > .container > ul li span {
  font-size: 14px;
  color: #c3cbe6;
}

/* ============ 荣誉 ============ */
.laurels-k3d {
  padding: 86px 0;
  background: var(--white);
}

.laurels-k3d > .container > header,
.crew-k3d > .container > header,
.journey-k3d > .container > header,
.voices-k3d > .container > header,
.queries-k3d > .container > header,
.allies-k3d > .container > header,
.expertise-k3d > .container > header,
.edge-k3d > .container > header,
.showcase-k3d > .container > header,
.updates-k3d > .container > header {
  max-width: 760px;
  margin: 0 auto 46px;
  text-align: center;
}

.laurels-k3d header p:first-of-type,
.crew-k3d header p:first-of-type,
.journey-k3d header p:first-of-type,
.voices-k3d header p:first-of-type,
.queries-k3d header p:first-of-type,
.allies-k3d header p:first-of-type,
.expertise-k3d header p:first-of-type,
.edge-k3d header p:first-of-type,
.showcase-k3d header p:first-of-type,
.updates-k3d header p:first-of-type {
  display: inline-block;
  padding: 6px 18px;
  margin-bottom: 16px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.4px;
}

.laurels-k3d header h2,
.crew-k3d header h2,
.journey-k3d header h2,
.voices-k3d header h2,
.queries-k3d header h2,
.allies-k3d header h2,
.expertise-k3d header h2,
.edge-k3d header h2,
.showcase-k3d header h2,
.updates-k3d header h2 {
  font-size: 36px;
  line-height: 1.35;
  font-weight: 800;
  margin-bottom: 14px;
}

.laurels-k3d header p:last-of-type,
.crew-k3d header p:last-of-type,
.journey-k3d header p:last-of-type,
.voices-k3d header p:last-of-type,
.queries-k3d header p:last-of-type,
.allies-k3d header p:last-of-type,
.expertise-k3d header p:last-of-type,
.edge-k3d header p:last-of-type,
.showcase-k3d header p:last-of-type,
.updates-k3d header p:last-of-type {
  color: var(--muted);
  font-size: 15.5px;
}

.laurels-k3d > .container > ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.laurels-k3d li {
  padding: 34px 24px;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fff 0%, #f7f9ff 100%);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.laurels-k3d li:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.laurels-k3d li i {
  font-size: 30px;
  color: var(--accent);
  margin-bottom: 14px;
}

.laurels-k3d li strong {
  display: block;
  font-size: 40px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
}

.laurels-k3d li h3 {
  margin-top: 10px;
  font-size: 16px;
  font-weight: 700;
}

.laurels-k3d li p {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--muted);
}

/* ============ 案例 ============ */
.showcase-k3d {
  padding: 92px 0;
  background: var(--bg);
}

.showcase-k3d > .container {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

.showcase-k3d > .container > header {
  grid-column: 1 / -1;
  margin-bottom: 20px;
}

.showcase-k3d article {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.showcase-k3d article:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.showcase-k3d article figure {
  margin: 0;
  overflow: hidden;
}

.showcase-k3d article figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.showcase-k3d article:hover figure img {
  transform: scale(1.06);
}

.showcase-k3d article > div {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 24px 24px 26px;
}

.showcase-k3d article h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}

.showcase-k3d article p {
  font-size: 14.5px;
  color: var(--muted);
  flex: 1;
}

.showcase-k3d article footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  color: var(--muted);
}

.showcase-k3d article footer span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--primary);
  font-weight: 600;
}

/* ============ 团队 ============ */
.crew-k3d {
  padding: 92px 0;
  background: var(--white);
}

.crew-k3d > .container > ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.crew-k3d li {
  text-align: center;
  padding: 26px 20px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.crew-k3d li:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.crew-k3d li img {
  width: 128px;
  height: 128px;
  margin: 0 auto 18px;
  object-fit: cover;
  border-radius: 0;
  border: 4px solid var(--primary-soft);
  transition: border-color 0.35s ease, transform 0.35s ease;
}

.crew-k3d li:hover img {
  border-color: var(--accent);
  transform: scale(1.03);
}

.crew-k3d li h3 {
  font-size: 18px;
  font-weight: 700;
}

.crew-k3d li > p {
  margin: 6px 0 14px;
  font-size: 13.5px;
  color: var(--primary);
  font-weight: 600;
}

.crew-k3d li ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.crew-k3d li ul li {
  padding: 5px 13px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted);
  transition: none;
}

.crew-k3d li ul li:hover {
  transform: none;
  box-shadow: none;
}

/* ============ 关于我们 ============ */
.story-k3d {
  padding: 96px 0;
  background: var(--tint);
}

.story-k3d > .container {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
}

.story-k3d > .container > div:first-of-type > p:first-of-type {
  display: inline-block;
  padding: 6px 18px;
  margin-bottom: 16px;
  border-radius: 999px;
  background: #fff;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.4px;
}

.story-k3d h2 {
  font-size: 36px;
  line-height: 1.35;
  font-weight: 800;
  margin-bottom: 18px;
}

.story-k3d h2 span {
  color: var(--primary);
}

.story-k3d > .container > div:first-of-type > p:nth-of-type(2) {
  color: var(--muted);
  font-size: 15.5px;
  margin-bottom: 26px;
}

.story-k3d > .container > div:first-of-type > ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 32px;
}

.story-k3d > .container > div:first-of-type > ul li {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 14px 16px;
  background: #fff;
  border-radius: 12px;
  border: 1px solid rgba(43, 68, 216, 0.1);
  font-size: 14.5px;
  font-weight: 600;
}

.story-k3d > .container > div:first-of-type > ul li i {
  color: var(--primary);
  margin-top: 4px;
}

.story-k3d > .container > div:last-of-type {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.story-k3d > .container > div:last-of-type figure {
  margin: 0;
  overflow: hidden;
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
}

.story-k3d > .container > div:last-of-type figure:first-of-type {
  grid-row: span 2;
}

.story-k3d > .container > div:last-of-type figure img {
  width: 100%;
  height: 100%;
  min-height: 170px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.story-k3d > .container > div:last-of-type figure:hover img {
  transform: scale(1.07);
}

/* ============ 工作流程 ============ */
.journey-k3d {
  padding: 92px 0;
  background: var(--white);
}

.journey-k3d > .container > ol {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 20px;
  counter-reset: step;
}

.journey-k3d > .container > ol li {
  position: relative;
  padding: 30px 22px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.journey-k3d > .container > ol li:hover {
  transform: translateY(-8px);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.journey-k3d > .container > ol li span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 16px;
  border-radius: 14px;
  background: var(--primary);
  color: #fff;
  font-size: 17px;
  font-weight: 800;
}

.journey-k3d > .container > ol li h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.journey-k3d > .container > ol li p {
  font-size: 14px;
  color: var(--muted);
}

/* ============ 合作伙伴 ============ */
.allies-k3d {
  padding: 80px 0;
  background: var(--bg);
}

.allies-k3d > .container > ul {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 18px;
}

.allies-k3d > .container > ul li {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 84px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.allies-k3d > .container > ul li:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-soft);
}

.allies-k3d > .container > ul li img {
  max-height: 46px;
  width: auto;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.75;
  transition: filter 0.35s ease, opacity 0.35s ease;
}

.allies-k3d > .container > ul li:hover img {
  filter: grayscale(0);
  opacity: 1;
}

/* ============ 服务 ============ */
.expertise-k3d {
  padding: 96px 0;
  background: var(--white);
}

.expertise-k3d > .container > ul {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.expertise-k3d > .container > ul li {
  padding: 32px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.expertise-k3d > .container > ul li::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.expertise-k3d > .container > ul li:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.expertise-k3d > .container > ul li:hover::after {
  transform: scaleX(1);
}

.expertise-k3d > .container > ul li i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  margin-bottom: 18px;
  border-radius: 16px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 22px;
}

.expertise-k3d > .container > ul li h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.expertise-k3d > .container > ul li p {
  font-size: 14.5px;
  color: var(--muted);
}

/* ============ 评论 ============ */
.voices-k3d {
  padding: 92px 0;
  background: var(--bg);
}

.voices-k3d > .container > ul {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.voices-k3d > .container > ul li {
  display: flex;
  gap: 16px;
  padding: 28px 26px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.voices-k3d > .container > ul li:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.voices-k3d > .container > ul li img {
  flex: none;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--primary-soft);
}

.voices-k3d > .container > ul li h3 {
  font-size: 16.5px;
  font-weight: 700;
}

.voices-k3d > .container > ul li h3 span {
  display: block;
  margin-top: 3px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}

.voices-k3d > .container > ul li p {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
}

.voices-k3d > .container > ul li i {
  color: var(--accent);
  font-size: 13px;
}

/* ============ 首页文章 ============ */
.updates-k3d {
  padding: 92px 0;
  background: var(--white);
}

.updates-k3d > .container {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

.updates-k3d > .container > header {
  grid-column: 1 / -1;
  margin-bottom: 20px;
}

.updates-k3d article {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.updates-k3d article:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.updates-k3d article figure {
  margin: 0;
  overflow: hidden;
}

.updates-k3d article figure img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.updates-k3d article:hover figure img {
  transform: scale(1.06);
}

.updates-k3d article > div {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 24px 24px;
}

.updates-k3d article h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}

.updates-k3d article h3 a {
  text-decoration: none;
  transition: color 0.25s ease;
}

.updates-k3d article h3 a:hover {
  color: var(--primary);
}

.updates-k3d article p {
  font-size: 14.5px;
  color: var(--muted);
  flex: 1;
}

.updates-k3d article footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  color: var(--muted);
}

.updates-k3d article footer span {
  color: var(--primary);
  font-weight: 600;
}

/* ============ 问答 ============ */
.queries-k3d {
  padding: 92px 0;
  background: var(--bg);
}

.queries-k3d > .container > div {
  max-width: 900px;
  margin: 0 auto;
}

.queries-k3d details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.queries-k3d details[open] {
  border-color: var(--primary);
  box-shadow: var(--shadow-soft);
}

.queries-k3d summary {
  position: relative;
  padding: 20px 52px 20px 24px;
  font-size: 16.5px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.queries-k3d summary::-webkit-details-marker {
  display: none;
}

.queries-k3d summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  font-size: 13px;
  transition: transform 0.3s ease;
}

.queries-k3d details[open] summary::after {
  transform: translateY(-50%) rotate(180deg);
}

.queries-k3d details p {
  padding: 0 24px 22px;
  font-size: 14.5px;
  color: var(--muted);
}

/* ============ 优势 ============ */
.edge-k3d {
  padding: 92px 0;
  background: var(--tint);
}

.edge-k3d > .container > ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.edge-k3d > .container > ul li {
  padding: 30px 24px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid rgba(43, 68, 216, 0.1);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.edge-k3d > .container > ul li:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.edge-k3d > .container > ul li i {
  font-size: 24px;
  color: var(--accent);
  margin-bottom: 14px;
}

.edge-k3d > .container > ul li h3 {
  font-size: 17.5px;
  font-weight: 700;
  margin-bottom: 8px;
}

.edge-k3d > .container > ul li p {
  font-size: 14px;
  color: var(--muted);
}

/* ============ 联系我们 ============ */
.reach-k3d {
  padding: 92px 0;
  background: #0d1230;
  color: #dfe4f5;
}

.reach-k3d > .container {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
  align-items: start;
}

.reach-k3d h2 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.reach-k3d > .container > div:first-of-type > p {
  color: #a9b2d0;
  font-size: 15px;
  margin-bottom: 30px;
}

.reach-k3d > .container > div:first-of-type > ul {
  display: grid;
  gap: 16px;
}

.reach-k3d > .container > div:first-of-type > ul li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
}

.reach-k3d > .container > div:first-of-type > ul li i {
  color: var(--accent);
  font-size: 18px;
  margin-top: 4px;
}

.reach-k3d > .container > div:first-of-type > ul li strong {
  display: block;
  font-size: 15px;
  color: #fff;
  margin-bottom: 3px;
}

.reach-k3d > .container > div:first-of-type > ul li p {
  font-size: 14px;
  color: #a9b2d0;
}

.reach-k3d form {
  padding: 34px 34px 30px;
  border-radius: 20px;
  background: #fff;
  color: var(--ink);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.28);
}

.reach-k3d form h3 {
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 20px;
}

.reach-k3d form label {
  display: block;
  margin-bottom: 16px;
  font-size: 14px;
  font-weight: 600;
}

.reach-k3d form label span {
  display: block;
  margin-bottom: 7px;
}

.reach-k3d form input,
.reach-k3d form textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f8faff;
  font-size: 15px;
  color: var(--ink);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.reach-k3d form input:focus,
.reach-k3d form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43, 68, 216, 0.14);
}

.reach-k3d form textarea {
  min-height: 118px;
  resize: vertical;
}

.reach-k3d form button {
  width: 100%;
}

.reach-k3d form p[data-status] {
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--muted);
}

.reach-k3d form p[data-status][data-state="ok"] {
  color: #17916b;
  font-weight: 600;
}

/* ============ CTA ============ */
.cta-k3d {
  padding: 82px 0;
  background: linear-gradient(120deg, var(--primary-deep) 0%, var(--primary) 55%, #3f63e8 100%);
  color: #fff;
  text-align: center;
}

.cta-k3d h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.4;
  max-width: 900px;
  margin: 0 auto 16px;
}

.cta-k3d > .container > p {
  max-width: 720px;
  margin: 0 auto 30px;
  color: #d7ddfa;
  font-size: 15.5px;
}

.cta-k3d > .container > div {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.cta-k3d .btn {
  background: #fff;
  color: var(--primary);
}

.cta-k3d .btn:hover {
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
}

.cta-k3d div a:nth-of-type(2) {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

/* ============ 页脚 ============ */
.footer-k3d {
  background: #090d26;
  color: #a7b0ce;
  padding-top: 68px;
}

.footer-k3d > .container:first-of-type {
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-k3d img {
  height: 48px;
  width: auto;
  margin-bottom: 18px;
}

.footer-k3d > .container:first-of-type > div:first-of-type > p:first-of-type {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.footer-k3d p {
  font-size: 13.5px;
  line-height: 1.9;
}

.footer-k3d h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}

.footer-k3d li {
  font-size: 13.5px;
  margin-bottom: 11px;
}

.footer-k3d a {
  color: #a7b0ce;
  text-decoration: none;
  transition: color 0.25s ease;
}

.footer-k3d a:hover {
  color: var(--accent);
}

.footer-k3d > .container:first-of-type > div:first-of-type > ul {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.footer-k3d > .container:first-of-type > div:first-of-type > ul li a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #cfd6ee;
}

.footer-k3d > .container:first-of-type > div:first-of-type > ul li a:hover {
  border-color: var(--accent);
  background: rgba(255, 177, 36, 0.12);
  color: var(--accent);
}

.footer-k3d > .container:last-of-type {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 22px;
  padding-bottom: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  font-size: 13px;
}

/* ============ 列表页 ============ */
.listing-k3d {
  padding: 74px 0 96px;
  background: var(--bg);
}

.listing-k3d > .container {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

.listing-k3d > .container > header {
  grid-column: 1 / -1;
  max-width: 820px;
  margin: 0 auto 20px;
  text-align: center;
}

.listing-k3d > .container > header p:first-of-type {
  display: inline-block;
  padding: 6px 18px;
  margin-bottom: 14px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.4px;
}

.listing-k3d > .container > header h1 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 14px;
}

.listing-k3d > .container > header p:last-of-type {
  color: var(--muted);
  font-size: 15.5px;
}

.listing-k3d article {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.listing-k3d article:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.listing-k3d article figure {
  margin: 0;
  overflow: hidden;
}

.listing-k3d article figure img {
  width: 100%;
  height: 224px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.listing-k3d article:hover figure img {
  transform: scale(1.06);
}

.listing-k3d article > div {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 24px 24px;
}

.listing-k3d article h2 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}

.listing-k3d article h2 a {
  text-decoration: none;
  transition: color 0.25s ease;
}

.listing-k3d article h2 a:hover {
  color: var(--primary);
}

.listing-k3d article p {
  font-size: 14.5px;
  color: var(--muted);
  flex: 1;
}

.listing-k3d article footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  color: var(--muted);
}

.listing-k3d article footer span {
  color: var(--primary);
  font-weight: 600;
}

/* ============ 详情页 ============ */
.reading-k3d {
  padding: 70px 0 96px;
  background: var(--bg);
}

.reading-k3d > .container {
  max-width: 900px;
}

.reading-k3d > .container > header {
  margin-bottom: 26px;
}

.reading-k3d > .container > header h1 {
  font-size: 38px;
  line-height: 1.35;
  font-weight: 800;
  margin-bottom: 18px;
}

.reading-k3d > .container > header p {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-size: 13.5px;
  color: var(--muted);
}

.reading-k3d > .container > header p span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--primary);
  font-weight: 600;
}

.reading-k3d > .container > figure {
  margin: 0 0 32px;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.reading-k3d > .container > figure img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.reading-k3d > .container > div {
  padding: 40px 46px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
}

.reading-k3d > .container > div h2 {
  font-size: 25px;
  font-weight: 800;
  margin: 30px 0 14px;
}

.reading-k3d > .container > div h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 24px 0 12px;
}

.reading-k3d > .container > div p {
  margin-bottom: 16px;
  color: #414a63;
  font-size: 15.5px;
}

.reading-k3d > .container > div ul,
.reading-k3d > .container > div ol {
  margin: 0 0 18px 4px;
}

.reading-k3d > .container > div ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  color: #414a63;
  font-size: 15.5px;
}

.reading-k3d > .container > div ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}

.reading-k3d > .container > div ol li {
  margin-bottom: 10px;
  padding-left: 6px;
  color: #414a63;
  font-size: 15.5px;
}

.reading-k3d > .container > div blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  background: var(--bg);
  color: var(--muted);
  font-size: 15px;
}

.reading-k3d > .container > div table {
  width: 100%;
  margin: 20px 0;
  border-collapse: collapse;
  font-size: 14.5px;
}

.reading-k3d > .container > div table th,
.reading-k3d > .container > div table td {
  padding: 12px 14px;
  border: 1px solid var(--line);
  text-align: left;
}

.reading-k3d > .container > div table th {
  background: var(--bg);
  font-weight: 700;
}

.reading-k3d > .container > nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.reading-k3d > .container > nav > div {
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

.reading-k3d > .container > nav > div p {
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.reading-k3d > .container > nav > div a {
  font-size: 15.5px;
  font-weight: 700;
  text-decoration: none;
  transition: color 0.25s ease;
}

.reading-k3d > .container > nav > div a:hover {
  color: var(--primary);
}

/* ============ 响应式 ============ */
@media (max-width: 1100px) {
  .hero-k3d h1 {
    font-size: 44px;
  }

  .journey-k3d > .container > ol {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .allies-k3d > .container > ul {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .edge-k3d > .container > ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .nav-k3d > .container > button[data-toggle] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-k3d nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 78px;
    padding: 12px 24px 24px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 30px rgba(20, 26, 51, 0.08);
  }

  .nav-k3d[data-state="open"] nav {
    display: block;
  }

  .nav-k3d nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .nav-k3d nav ul li a {
    display: block;
    width: 100%;
    padding: 13px 0;
    font-size: 16px;
    border-bottom: 1px solid #f1f4fb;
  }

  .nav-k3d nav ul li a::after {
    display: none;
  }

  .story-k3d > .container,
  .reach-k3d > .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .showcase-k3d > .container,
  .updates-k3d > .container,
  .listing-k3d > .container {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .expertise-k3d > .container > ul,
  .voices-k3d > .container > ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .crew-k3d > .container > ul,
  .laurels-k3d > .container > ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-k3d > .container:first-of-type {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px;
  }
}

@media (max-width: 760px) {
  .hero-k3d {
    padding: 132px 0 84px;
  }

  .hero-k3d h1 {
    font-size: 34px;
  }

  .hero-k3d > .container > ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .story-k3d h2,
  .laurels-k3d header h2,
  .crew-k3d header h2,
  .journey-k3d header h2,
  .voices-k3d header h2,
  .queries-k3d header h2,
  .allies-k3d header h2,
  .expertise-k3d header h2,
  .edge-k3d header h2,
  .showcase-k3d header h2,
  .updates-k3d header h2,
  .listing-k3d > .container > header h1,
  .reading-k3d > .container > header h1,
  .cta-k3d h2,
  .reach-k3d h2 {
    font-size: 27px;
  }

  .showcase-k3d > .container,
  .updates-k3d > .container,
  .listing-k3d > .container {
    grid-template-columns: minmax(0, 1fr);
  }

  .expertise-k3d > .container > ul,
  .voices-k3d > .container > ul,
  .crew-k3d > .container > ul,
  .laurels-k3d > .container > ul,
  .edge-k3d > .container > ul,
  .journey-k3d > .container > ol {
    grid-template-columns: minmax(0, 1fr);
  }

  .allies-k3d > .container > ul {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .story-k3d > .container > div:first-of-type > ul {
    grid-template-columns: minmax(0, 1fr);
  }

  .reading-k3d > .container > div {
    padding: 28px 22px;
  }

  .reading-k3d > .container > figure img {
    height: 260px;
  }

  .reading-k3d > .container > nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .nav-k3d > .container > a span {
    display: none;
  }
}

@media (max-width: 520px) {
  .allies-k3d > .container > ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-k3d > .container:first-of-type {
    grid-template-columns: minmax(0, 1fr);
  }

  .reach-k3d form {
    padding: 26px 22px 24px;
  }

  .hero-k3d > .container > ul {
    gap: 12px;
  }

  .hero-k3d > .container > ul li strong {
    font-size: 24px;
  }
}

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

  html[data-js="true"] [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .hero-k3d figure:nth-of-type(1),
  .hero-k3d figure:nth-of-type(2) {
    animation: none;
  }

  .hero-k3d figure:nth-of-type(2) {
    display: none;
  }

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