:root {
  --ddg-navy: #07184a;
  --ddg-muted: #4d5d83;
  --ddg-red: #ff5138;
  --ddg-orange: #ff792d;
  --ddg-yellow: #ffb719;
  --ddg-cyan: #08b9c7;
  --ddg-blue: #2268f1;
  --ddg-purple: #8a42f5;
  --ddg-ice: #f3f8ff;
  --ddg-line: #dce6f2;
  --ddg-shadow: 0 18px 45px rgba(7, 24, 74, 0.12);
  --ddg-soft-shadow: 0 10px 25px rgba(7, 24, 74, 0.09);
  --font-main: "Segoe UI", Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ddg-navy);
  background: #fff;
  font-family: var(--font-main);
  line-height: 1.55;
}

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

a {
  color: inherit;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: #1a0933; /* 导航栏整行全屏：深紫色 */
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
  backdrop-filter: blur(5px);
}

.header-container {
  background-color: transparent; /* 容器保持透明即可 */
  max-width: 1200px;
  margin: 0 auto;
  padding: 0px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-img {
  height: 80px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-item a {
  text-decoration: none;
  color: #657795;
  font-weight: 600;
  font-size: 14px;
  text-transform: uppercase;
  position: relative;
  padding: 5px 0;
  transition: all 0.3s ease;
}

.nav-item.active a,
.nav-item a:hover {
  color: #FF5A1F;
}

.nav-item.active a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: #FF5A1F;
  border-radius: 3px 3px 0 0;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.social-icon:hover {
  transform: scale(1.1);
}

.standalone-main {
  padding-top: 80px;
}

@media (max-width: 768px) {
  .nav-menu,
  .social-links {
    display: none;
  }
}

.demo-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 10px clamp(18px, 4vw, 54px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(220, 230, 242, 0.8);
  box-shadow: 0 8px 22px rgba(7, 24, 74, 0.05);
  backdrop-filter: blur(12px);
}

.demo-logo,
.demo-nav {
  display: flex;
  align-items: center;
}

.demo-logo {
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
}

.logo-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #fff;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--ddg-red), var(--ddg-yellow) 52%, var(--ddg-cyan));
  font-size: 13px;
  letter-spacing: 0.04em;
}

.demo-nav {
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.demo-nav a {
  padding: 8px 12px;
  color: var(--ddg-muted);
  text-decoration: none;
  text-transform: uppercase;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.demo-nav a:hover,
.demo-nav a:focus-visible {
  color: var(--ddg-orange);
}

.ddg-section {
  padding: 48px clamp(16px, 4vw, 52px);
  overflow: hidden;
}

.ddg-section + .ddg-section {
  padding-top: 28px;
}

.section-shell {
  width: min(1024px, 100%);
  margin: 0 auto;
}

.hero-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(430px, 0.98fr) minmax(430px, 1.02fr);
  align-items: center;
  min-height: 500px;
}

.hero-copy {
  position: relative;
  z-index: 2;
  padding: 42px 0 42px 8px;
}

.hero-copy h1 {
  margin: 0;
  color: var(--ddg-navy);
  font-size: clamp(44px, 7.3vw, 78px);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.08;
}

.hero-copy h1 span {
  display: block;
}

.brand-gradient {
  width: fit-content;
  background: linear-gradient(90deg, var(--ddg-red), var(--ddg-yellow) 34%, var(--ddg-cyan) 63%, var(--ddg-navy) 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.accent-line {
  position: relative;
  width: 180px;
  height: 26px;
  margin: 24px 0 26px;
}

.accent-line::before,
.accent-line::after {
  content: "";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

.accent-line::before {
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--ddg-red);
  box-shadow: 18px 0 0 var(--ddg-yellow);
}

.accent-line::after {
  left: 46px;
  width: 128px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--ddg-red), var(--ddg-yellow), var(--ddg-cyan));
}

.accent-arrow::after {
  width: 150px;
  clip-path: polygon(0 35%, 86% 35%, 86% 0, 100% 50%, 86% 100%, 86% 65%, 0 65%);
}

.hero-kicker {
  margin: 0;
  color: var(--ddg-navy);
  font-size: clamp(20px, 2.6vw, 25px);
  font-weight: 750;
  line-height: 1.45;
}

.hero-art-wrap {
  position: relative;
  min-height: 460px;
}

.hero-art-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 48% 0 0 42%;
  /*background: linear-gradient(145deg, #edf6ff, #1a0933);*/
  background: #1a0933; /* or transparent */
}

.hero-art {
  position: absolute;
  z-index: 1;
  object-fit: contain;
}

.about-art-wrap {
  min-height: 510px;
}

.about-art {
  right: 0;
  bottom: 0;
  width: 526px;
}

.careers-art-wrap {
  min-height: 435px;
}

.careers-art {
  right: -24px;
  bottom: 0;
  width: 594px;
}

.contact-art-wrap {
  min-height: 570px;
}

.contact-art {
  right: -22px;
  bottom: -2px;
  width: 579px;
}

.cta-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 28px;
  border-radius: 999px;
  color: #fff;
  text-decoration: none;
  font-weight: 850;
  box-shadow: var(--ddg-soft-shadow);
}

.cta-button {
  margin-top: 30px;
  background: linear-gradient(135deg, var(--ddg-red), var(--ddg-orange));
}

.secondary-button {
  margin-top: 22px;
  background: linear-gradient(135deg, #1f76ff, #1761e8);
}

.intro-grid {
  display: grid;
  grid-template-columns: 180px minmax(280px, 1fr) 360px;
  gap: 28px;
  align-items: center;
  margin-top: 46px;
}

.ddg-lockup {
  display: flex;
  align-items: baseline;
  gap: 0;
  min-height: 88px;
  font-size: 78px;
  font-weight: 950;
  line-height: 0.8;
  letter-spacing: -0.08em;
}

.lockup-letter {
  display: inline-block;
}

.lockup-red {
  color: var(--ddg-red);
}

.lockup-yellow {
  color: var(--ddg-yellow);
}

.lockup-cyan {
  color: var(--ddg-cyan);
}

.intro-copy p,
.belief-item p,
.life-copy p,
.contact-card p,
.value-card p,
.reason-card p,
.contact-value-card p {
  margin: 0;
}

.intro-copy {
  display: grid;
  gap: 10px;
  color: var(--ddg-navy);
  font-size: 18px;
  font-weight: 550;
}

.map-card {
  align-self: stretch;
  display: grid;
  place-items: center;
  min-height: 260px;
}

.map-card img {
  width: 100%;
  opacity: 0.95;
}

.belief-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  margin: 24px 0 34px;
}

.belief-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--ddg-line);
  font-size: 17px;
  font-weight: 540;
}

.round-icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  color: #fff;
  font-size: 26px;
  font-weight: 900;
  box-shadow: var(--ddg-soft-shadow);
}

.icon-yellow {
  background: linear-gradient(135deg, #ffca32, #ffab12);
}

.icon-cyan {
  background: linear-gradient(135deg, #10c7d0, #01aebe);
}

.values-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  margin: 36px 0 34px;
  padding: 26px 18px;
  border: 1px solid rgba(220, 230, 242, 0.9);
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--ddg-soft-shadow);
}

.value-card {
  min-width: 0;
  padding: 0 18px;
  text-align: center;
}

.value-card + .value-card {
  border-left: 1px solid var(--ddg-line);
}

.value-icon {
  min-height: 56px;
  color: currentColor;
  font-size: 50px;
  font-weight: 900;
  line-height: 1;
}

.value-red {
  color: var(--ddg-red);
}

.value-yellow {
  color: var(--ddg-yellow);
}

.value-cyan {
  color: var(--ddg-cyan);
}

.value-blue {
  color: var(--ddg-blue);
}

.value-purple {
  color: var(--ddg-purple);
}

.value-card h2,
.reason-card h3,
.contact-value-card h2 {
  margin: 12px 0 6px;
  color: currentColor;
  font-size: 19px;
  font-weight: 900;
  text-transform: uppercase;
}

.value-card p,
.reason-card p,
.contact-value-card p {
  color: var(--ddg-navy);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.45;
}

.brand-banner {
  position: relative;
  min-height: 222px;
  overflow: hidden;
  border-radius: 18px;
  background:
    radial-gradient(circle at 90% 72%, var(--ddg-yellow) 0 44px, transparent 46px),
    radial-gradient(circle at 98% 88%, var(--ddg-cyan) 0 90px, transparent 92px),
    radial-gradient(circle at 0% 96%, var(--ddg-red) 0 96px, transparent 98px),
    #07184a;
  color: #fff;
}

.brand-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.18;
}

.brand-banner p,
.brand-banner img,
.brand-banner a {
  position: relative;
  z-index: 1;
}

.brand-banner p,
.brand-banner a {
  z-index: 3;
}

.brand-banner p {
  margin: 0;
  font-size: clamp(28px, 4.2vw, 42px);
  font-weight: 900;
  line-height: 1.2;
}

.brand-banner span {
  color: var(--ddg-red);
  font-style: normal;
}

.brand-banner em {
  color: var(--ddg-cyan);
  font-style: normal;
}

.about-banner {
  display: grid;
  grid-template-columns: minmax(260px, 0.34fr) 1fr;
  align-items: center;
  padding: 0 42px 0 320px;
}

.about-banner img {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  width: 310px;
  max-width: 38%;
  clip-path: inset(18px 0 0 0);
  pointer-events: none;
}

.bottom-art-banner {
  margin-top: 34px;
}

.bottom-art-link,
.bottom-art-banner img {
  display: block;
  width: 100%;
}

.bottom-art-link {
  border-radius: 18px;
  text-decoration: none;
}

.bottom-art-link:focus-visible {
  outline: 3px solid var(--ddg-orange);
  outline-offset: 4px;
}

.bottom-art-banner img {
  height: auto;
  border-radius: 18px;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 0 auto 20px;
  text-align: center;
}

.section-heading span {
  color: var(--ddg-cyan);
  font-size: 28px;
  font-weight: 900;
}

.section-heading h2 {
  margin: 0;
  color: var(--ddg-navy);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.reason-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 26px;
}

.reason-card,
.position-card,
.contact-value-card {
  border: 1px solid rgba(220, 230, 242, 0.9);
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--ddg-soft-shadow);
}

.reason-card {
  min-height: 182px;
  padding: 24px 16px 20px;
  text-align: center;
}

.reason-card .value-icon {
  font-size: 54px;
}

.life-panel {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 24px;
  align-items: center;
  margin: 28px 0 30px;
  padding: 28px 30px;
  border-radius: 16px;
  background:
    radial-gradient(circle at 18% 100%, rgba(200, 224, 255, 0.7), transparent 180px),
    #edf6ff;
}

.life-copy h2 {
  margin: 0 0 18px;
  font-size: 30px;
  font-weight: 900;
}

.life-copy p {
  color: var(--ddg-navy);
  font-size: 18px;
  font-weight: 600;
}

.life-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.life-gallery img {
  width: 100%;
  aspect-ratio: 2.18 / 1;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 8px 18px rgba(7, 24, 74, 0.12);
}

.position-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}

.position-card {
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 12px;
  min-height: 118px;
  padding: 18px 10px;
  text-align: center;
  text-decoration: none;
  font-size: 15px;
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.position-card:hover,
.position-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--ddg-shadow);
}

.position-icon {
  min-height: 36px;
  font-size: 36px;
  font-weight: 900;
  line-height: 1;
}

.view-link {
  display: flex;
  width: fit-content;
  margin: 18px auto 24px;
  color: #1761e8;
  text-decoration: none;
  font-weight: 900;
}

.careers-banner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  min-height: 176px;
  padding: 0 38px 0 314px;
}

.careers-banner img {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  width: 286px;
  max-width: 34%;
  clip-path: inset(18px 0 0 0);
  pointer-events: none;
}

.careers-banner .cta-button {
  margin: 0;
  white-space: nowrap;
}

.contact-hero {
  min-height: 570px;
}

.contact-card {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 42px;
  align-items: center;
  margin-top: -16px;
  padding: 44px 66px;
  border: 1px solid rgba(220, 230, 242, 0.9);
  border-radius: 22px;
  background: #fff;
  box-shadow: var(--ddg-shadow);
}

.contact-card img {
  width: 210px;
  margin: auto;
}

.contact-card .section-heading {
  justify-content: flex-start;
  margin-bottom: 24px;
}

.contact-card .section-heading h2 {
  font-size: 34px;
  letter-spacing: 0;
  text-transform: none;
}

.contact-card p {
  max-width: 560px;
  font-size: 22px;
  font-weight: 650;
  line-height: 1.45;
}

.contact-card a {
  display: inline-flex;
  margin-top: 22px;
  color: #2377f4;
  text-decoration: none;
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 900;
  overflow-wrap: anywhere;
}

.contact-values {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin: 36px 0 34px;
}

.contact-value-card {
  min-height: 200px;
  padding: 30px 24px;
  text-align: center;
}

.contact-value-card .value-icon {
  font-size: 58px;
}

.contact-banner {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  min-height: 205px;
  padding: 0 360px 0 90px;
}

.contact-banner img {
  position: absolute;
  right: 48px;
  bottom: 0;
  z-index: 1;
  width: 285px;
  max-width: 32%;
  clip-path: inset(0 0 5px 0);
  pointer-events: none;
}

@media (max-width: 980px) {
  .hero-panel {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-top: 10px;
  }

  .hero-copy {
    padding: 18px 0 0;
  }

  .hero-art-wrap {
    min-height: 390px;
    margin-top: -22px;
  }

  .about-art,
  .careers-art,
  .contact-art {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    width: min(660px, 110vw);
  }

  .intro-grid {
    grid-template-columns: 160px 1fr;
  }

  .map-card {
    grid-column: 1 / -1;
    min-height: 0;
  }

  .map-card img {
    width: min(480px, 100%);
  }

  .values-row,
  .reason-grid,
  .position-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .value-card + .value-card {
    border-left: 0;
  }

  .life-panel,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .contact-card {
    gap: 18px;
    padding: 34px 28px;
  }

  .contact-card .section-heading {
    justify-content: center;
  }

  .contact-content {
    text-align: center;
  }

  .about-banner,
  .careers-banner,
  .contact-banner {
    grid-template-columns: 1fr;
    justify-items: center;
    padding: 28px 24px 180px;
    text-align: center;
  }

  .about-banner img,
  .careers-banner img,
  .contact-banner img {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    max-width: 72%;
  }

  .careers-banner .cta-button {
    margin-top: 4px;
  }
}

@media (max-width: 680px) {
  .demo-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .demo-nav {
    justify-content: flex-start;
  }

  .ddg-section {
    padding: 32px 14px;
  }

  .hero-copy h1 {
    font-size: clamp(40px, 14vw, 58px);
  }

  .hero-kicker {
    font-size: 19px;
  }

  .hero-art-wrap {
    min-height: 300px;
  }

  .contact-art-wrap {
    min-height: 350px;
  }

  .intro-grid,
  .belief-grid,
  .values-row,
  .reason-grid,
  .position-grid,
  .contact-values,
  .life-gallery {
    grid-template-columns: 1fr;
  }

  .ddg-lockup {
    min-height: 64px;
    font-size: 64px;
  }

  .belief-item {
    grid-template-columns: 58px 1fr;
    gap: 16px;
  }

  .round-icon {
    width: 52px;
    height: 52px;
    font-size: 22px;
  }

  .values-row {
    padding: 16px;
  }

  .value-card {
    padding: 18px 8px;
  }

  .value-card + .value-card {
    border-top: 1px solid var(--ddg-line);
  }

  .life-panel {
    padding: 24px 18px;
  }

  .life-copy h2 {
    font-size: 26px;
  }

  .contact-card p {
    font-size: 18px;
  }

  .brand-banner p {
    font-size: 28px;
  }
}