:root {
  --bg: #f8f3e9;
  --paper: #f3ead9;
  --text: #25211d;
  --muted: #5f5a53;
  --line: rgba(37, 33, 29, 0.12);
  --white: #ffffff;
  --orange: #f15a36;
  --gold: #efa84a;
  --mint: #10bdb2;
  --blue: #123a8e;
  --dark: #2a2a2a;
  --shadow: 0 14px 34px rgba(27, 34, 54, 0.08);
  --radius-lg: 26px;
  --radius-md: 18px;
  --shell: min(1180px, calc(100vw - 48px));
  --site-nav-bg: rgba(18, 58, 142, 0.84);
  --site-nav-color: #ffffff;
  --site-nav-border: rgba(255, 255, 255, 0.14);
  --site-nav-shadow: rgba(15, 37, 82, 0.18);
  --title-font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
}

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

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

button {
  font: inherit;
}

.shell {
  width: var(--shell);
  margin: 0 auto;
}

.section {
  padding: 78px 0;
}

.section-kicker {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: rgba(37, 33, 29, 0.52);
}

.section-kicker--light {
  color: rgba(255, 255, 255, 0.7);
}

.section-heading {
  margin-bottom: 34px;
}

.section-heading--center {
  text-align: center;
}

.section-heading h2,
.about__panel h2,
.official__heading h2,
.cta__inner h2 {
  margin: 0;
  font-family: var(--title-font);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.section-heading h2,
.official__heading h2,
.cta__inner h2 {
  font-size: clamp(30px, 3.6vw, 46px);
}

.section-heading p:last-child,
.about__panel p,
.capability-card p,
.panel-grid__item p,
.footer__brand p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

.hero {
  position: relative;
  min-height: 720px;
  /* 按 banner 图 1919x1081 的比例自适应高度，保证图片顶部完整显示 */
  height: 56.33vw;
  max-height: 100vh;
  background: #1a3a5c;
}

.hero__media,
.hero__overlay,
.hero__inner {
  position: absolute;
  inset: 0;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.hero__overlay {
  background:
    linear-gradient(180deg, rgba(13, 24, 53, 0.15) 0%, rgba(13, 24, 53, 0.35) 100%),
    linear-gradient(90deg, rgba(20, 50, 90, 0.25) 0%, transparent 60%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  padding: 22px 0;
}

.hero__topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 6px;
  background: #b13a3a;
  padding: 4px;
}

.brand__text {
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.3);
}

.site-nav {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 24px;
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--site-nav-bg);
  color: var(--site-nav-color);
  border: 1px solid var(--site-nav-border);
  box-shadow: 0 12px 32px var(--site-nav-shadow);
  backdrop-filter: blur(12px);
  transform: translateX(-50%);
  transition:
    background-color 0.28s ease,
    color 0.28s ease,
    border-color 0.28s ease,
    box-shadow 0.28s ease;
}

.site-nav a {
  font-size: 13px;
  line-height: 1;
  white-space: nowrap;
  opacity: 0.72;
  transition: opacity 0.22s ease;
}

.site-nav a.is-active {
  opacity: 1;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto 4px;
  background: var(--white);
}

.nav-toggle span:last-child {
  margin-bottom: 0;
}

.intro {
  padding: 88px 0 72px;
  background: #f8f4ea;
}

.intro__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.intro__content h2 {
  margin: 0;
  font-family: var(--title-font);
  font-size: clamp(48px, 5.8vw, 76px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.03em;
  color: #1f3a2a;
}

.intro__content .section-kicker {
  margin-bottom: 18px;
  font-size: 12px;
  letter-spacing: 0.32em;
  color: rgba(37, 33, 29, 0.5);
}

.intro__desc {
  margin: 28px 0 0;
  font-size: 15px;
  line-height: 2;
  color: var(--muted);
  max-width: 420px;
}

.intro__visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.intro__image {
  margin: 0;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(27, 34, 54, 0.1);
}

.intro__image--top {
  align-self: flex-start;
  width: 78%;
}

.intro__image--bottom {
  align-self: flex-end;
  width: 72%;
}

.intro__image img {
  display: block;
  width: 100%;
  height: auto;
}

.about {
  padding: 44px 0 0;
  background: #f8f4ea;
}

.about__layout {
  display: grid;
  grid-template-columns: 1.28fr 0.92fr;
  gap: 0;
  align-items: stretch;
  background: #ece4d5;
}

.about__visual {
  position: relative;
  margin: 0;
  overflow: hidden;
  min-height: 520px;
}

.about__visual::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 24%;
  height: 100%;
  background: linear-gradient(90deg, rgba(236, 228, 213, 0) 0%, rgba(236, 228, 213, 0.9) 76%, #ece4d5 100%);
}

.about__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about__panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 58px 64px 58px 54px;
  background: #ece4d5;
}

.about__panel h2 {
  margin: 0;
  color: #1f3a2a;
  font-family: var(--title-font);
  font-size: 34px;
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: -0.02em;
}

.about__panel p {
  margin: 28px 0 0;
  color: #5b5953;
  font-size: 14px;
  line-height: 2.15;
}

.about__panel p + p {
  margin-top: 10px;
}

.about__tags {
  display: flex;
  gap: 12px;
  margin-top: 42px;
  flex-wrap: wrap;
}

.about__tags span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 18px;
  border-radius: 999px;
  background: #f3efe6;
  color: #5d5b56;
  font-size: 12px;
  line-height: 1;
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: 100%;
  margin-top: 28px;
  gap: 1px;
  background: rgba(255, 255, 255, 0.36);
}

.panel-grid__item {
  min-height: 280px;
  padding: 0 0 0 60px;
  color: var(--white);
  display: flex;
  align-items: center;
  position: relative;
}

.panel-grid__item::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.12) 100%);
  pointer-events: none;
}

.panel-grid__content {
  width: 100%;
  max-width: 220px;
}

.panel-grid__serial {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.68);
}

.panel-grid__item h3 {
  margin: 0;
  font-size: 26px;
  font-family: var(--title-font);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.panel-grid__desc {
  margin: 12px 0 0;
  max-width: 196px;
  font-size: 10px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.82);
}

.panel-grid__content--blue h3,
.panel-grid__content--blue .panel-grid__desc,
.panel-grid__content--blue .panel-grid__serial {
  color: #0f3e97;
}

.panel-grid__item--orange {
  background: #c83a32;
}

.panel-grid__item--gold {
  background: #d24432;
}

.panel-grid__item--mint {
  background: #c83a32;
}

.panel-grid__item--blue {
  background: #b32f29;
}

.capability {
  background: #fffdf9;
  padding: 88px 0 96px;
}

.capability .section-heading {
  max-width: 560px;
  margin: 0 auto 36px;
}

.capability__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.capability-card {
  min-height: 168px;
  padding: 22px 18px 22px;
  border: 1px solid #ebe3d2;
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 6px 18px rgba(27, 34, 54, 0.04);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.capability-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(27, 34, 54, 0.1);
}

.capability-card__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: rgba(241, 90, 54, 0.1);
  color: #df5430;
  font-size: 11px;
}

.capability-card h3 {
  margin: 16px 0 0;
  font-size: 19px;
  font-family: var(--title-font);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.capability-card p {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

.archive {
  background: #e8dcc0;
  padding: 78px 0 92px;
}

.archive .section-heading {
  margin-bottom: 48px;
  text-align: center;
}

.archive .section-heading h2 {
  font-size: clamp(34px, 4vw, 54px);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.archive .section-heading p {
  position: relative;
  display: inline-block;
  margin: 10px 0 0;
  padding: 0 40px 10px;
  color: #4f4b44;
  font-size: 14px;
  line-height: 1.4;
}

.archive .section-heading p::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 325px;
  height: 1px;
  background: rgba(64, 55, 42, 0.45);
  transform: translateX(-50%);
}

.archive__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px 18px;
  align-items: start;
}

.archive-item {
  display: flex;
  flex-direction: column;
}

.archive-item--high {
  padding-top: 0;
}

.archive-item--low {
  padding-top: 64px;
}

.archive-item--low:nth-child(4n) {
  padding-top: 32px;
}

.archive-item--high:nth-child(4n) {
  padding-top: 12px;
}

.archive-item__text {
  margin: 0 0 12px;
  color: #2f2a23;
  font-size: 13px;
  line-height: 1.75;
  font-weight: 500;
}

.archive-item--image-first .archive-item__text {
  margin: 12px 0 0;
}

.archive-card {
  margin: 0;
  background: transparent;
}

.archive-item--high .archive-card img {
  aspect-ratio: 0.82 / 1;
  object-fit: cover;
  border-radius: 8px;
}

.archive-item--low .archive-card img {
  aspect-ratio: 0.98 / 1;
  object-fit: cover;
  border-radius: 8px;
}

.products {
  background: #fbf8f1;
  padding: 88px 0 96px;
}

.product-groups {
  display: grid;
  gap: 34px;
}

.product-group {
  display: grid;
  gap: 14px;
}

.product-group__header {
  text-align: center;
  margin-bottom: 18px;
}

.product-group__eyebrow {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--white);
  letter-spacing: 0.04em;
}

.product-group__eyebrow--green {
  background: #6cbb73;
}

.product-group__eyebrow--orange {
  background: #e28b49;
}

.product-group__eyebrow--red {
  background: #ef604c;
}

.product-group__eyebrow--blue {
  background: #4e6dd6;
}

.product-group__header h3 {
  display: none;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 18px 14px;
}

.product-grid--gift {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.product-card {
  padding: 6px 2px 0;
  border-radius: 0;
  background: transparent;
  border: 0;
}

.product-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  height: auto;
  object-fit: cover;
  border-radius: 6px;
  background: #f3ede0;
}

.product-card h4 {
  margin: 10px 0 0;
  font-size: 11px;
  line-height: 1.5;
  text-align: center;
  font-weight: 500;
  color: #4e4944;
}

.product-card--gift img {
  aspect-ratio: 1 / 1;
  border-radius: 10px;
}

.product-card--gift h4 {
  margin-top: 14px;
  font-size: 13px;
}

.official {
  padding: 88px 0 96px;
  background: #fffefb;
}

.official__cases {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.official__case {
  margin: 0;
  overflow: hidden;
  border-radius: 14px;
  background: #ffffff;
  border: 1px solid rgba(37, 33, 29, 0.08);
  box-shadow: 0 12px 32px rgba(27, 34, 54, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.official__case:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 42px rgba(27, 34, 54, 0.12);
}

.official__heading {
  padding: 0 0 30px;
  text-align: center;
}

.official__subtitle {
  margin: 14px 0 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.05em;
}

.official__subtitle-en {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.official__case img {
  aspect-ratio: 1.1 / 1;
  object-fit: cover;
  width: 100%;
}

.official__case:nth-child(1) {
  border-top: 6px solid #7fcf8f;
}

.official__case:nth-child(2) {
  border-top: 6px solid #e2af49;
}

.official__case:nth-child(3) {
  border-top: 6px solid #d65a42;
}

.cta {
  padding: 88px 0 96px;
  color: var(--white);
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(255, 255, 255, 0.06), transparent 60%),
    linear-gradient(135deg, #1f2c4a 0%, #0e1a32 100%);
}

.cta .section-kicker--light {
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.32em;
  margin-bottom: 18px;
}

.cta__inner h2 {
  font-size: clamp(36px, 4.2vw, 56px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.cta__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 156px;
  height: 48px;
  margin-top: 36px;
  padding: 0 32px;
  border-radius: 999px;
  background: var(--white);
  color: #1f2c4a;
  border: 1px solid var(--white);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.25s ease;
}

.cta__button:hover {
  transform: translateY(-2px);
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
  box-shadow: 0 12px 28px rgba(241, 90, 54, 0.32);
}

.footer {
  background: #222222;
  color: rgba(255, 255, 255, 0.72);
}

.footer__main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding: 64px 0 48px;
}

.footer__col--brand h3 {
  margin: 0 0 16px;
  color: var(--white);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.footer__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.5);
  max-width: 280px;
}

.footer__col h4 {
  margin: 0 0 20px;
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer__col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer__col li {
  margin-bottom: 12px;
  font-size: 13px;
}

.footer__col a {
  color: rgba(255, 255, 255, 0.55);
  transition: color 0.2s ease;
}

.footer__col a:hover {
  color: var(--white);
}

.footer__contact li {
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.7;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
}

.footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.footer__bottom-inner p {
  margin: 0;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.02em;
}

@media (max-width: 1080px) {
  .intro__layout {
    gap: 40px;
  }

  .about__layout {
    grid-template-columns: 1.1fr 0.9fr;
  }

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

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

  .archive-item--low {
    padding-top: 0;
  }

  .product-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .product-grid--gift {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  :root {
    --shell: calc(100vw - 28px);
  }

  .hero {
    min-height: 280px;
  }

  .hero__inner {
    padding-top: 16px;
  }

  .brand {
    width: 146px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 66px;
    right: 14px;
    left: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
    width: 220px;
    padding: 18px;
    border-radius: 18px;
    background: rgba(18, 58, 142, 0.92);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .section {
    padding: 56px 0;
  }

  .intro {
    padding: 48px 0 32px;
  }

  .intro__layout,
  .about__layout,
  .panel-grid,
  .capability__grid,
  .product-grid,
  .official__cases,
  .footer__main {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .footer__main {
    gap: 36px;
    padding: 40px 0 28px;
  }

  .footer__bottom-inner {
    justify-content: center;
  }

  .about__visual {
    min-height: 360px;
  }

  .about__panel {
    padding: 36px 28px;
  }

  .panel-grid__item {
    min-height: 152px;
    padding-left: 24px;
  }

  .archive__grid {
    grid-template-columns: 1fr;
  }

  .archive-item--high .archive-card img,
  .archive-item--low .archive-card img {
    aspect-ratio: auto;
  }

  .product-card img {
    height: 168px;
  }

  .product-grid--gift {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .product-card--gift img {
    height: 220px;
  }
}

@media (max-width: 560px) {
  .section-heading h2,
  .about__panel h2,
  .official__heading h2,
  .cta__inner h2 {
    font-size: 34px;
  }

  .archive .section-heading p::after {
    width: 220px;
  }

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

  .product-card img {
    height: 92px;
  }

  .product-card--gift img {
    height: 180px;
  }
}