@font-face {
  font-family: "WERAINBOW YaHei";
  src: url("../fonts/werainbow-yahei-light.woff2") format("woff2");
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  unicode-range: U+0000-00FF, U+2013-2014, U+2018-2019, U+201C-201D, U+2022, U+2026, U+2122;
}

@font-face {
  font-family: "WERAINBOW Rounded";
  src: url("../fonts/werainbow-rounded.woff2") format("woff2");
  font-style: normal;
  font-weight: 700 900;
  font-display: swap;
}

@font-face {
  font-family: "WERAINBOW YaHei";
  src: url("../fonts/werainbow-yahei-regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  unicode-range: U+0000-00FF, U+2013-2014, U+2018-2019, U+201C-201D, U+2022, U+2026, U+2122;
}

@font-face {
  font-family: "WERAINBOW YaHei";
  src: url("../fonts/werainbow-yahei-bold.woff2") format("woff2");
  font-style: normal;
  font-weight: 700 900;
  font-display: swap;
  unicode-range: U+0000-00FF, U+2013-2014, U+2018-2019, U+201C-201D, U+2022, U+2026, U+2122;
}

:root {
  --color-primary: #a8c0ca;
  --color-primary-strong: #95b2bf;
  --color-primary-pale: #dce7eb;
  --color-background: #ffffff;
  --color-surface: #f5f5f5;
  --color-warm: #f3eee6;
  --color-text: #252525;
  --color-text-soft: #777777;
  --color-white: #ffffff;
  --color-line: #c8d9df;
  --shadow-card: 0 20px 34px rgb(47 70 79 / 22%);
  --container: 1440px;
  --header-height: 96px;
  --radius-large: 44px;
  --radius-medium: 22px;
  --radius-small: 10px;
  --section-space: clamp(80px, 7.5vw, 112px);
  --section-space-compact: clamp(64px, 5vw, 80px);
  --section-title-gap: clamp(52px, 5vw, 72px);
  --content-group-gap: clamp(40px, 3.6vw, 52px);
  --title-size-display: clamp(2.5rem, 3.5vw, 4rem);
  --title-size-section: clamp(2rem, 2.8vw, 3.1rem);
  --title-size-subsection: clamp(1.35rem, 2.2vw, 2.2rem);
  --title-size-feature: clamp(1.5rem, 2.1vw, 2.25rem);
  --title-size-card: clamp(1.1rem, 1.45vw, 1.5rem);
  --title-size-item: clamp(0.85rem, 0.95vw, 1rem);
  --title-size-label: 1rem;
  --title-size-footer: 1rem;
  --title-size: var(--title-size-section);
  --body-size: 1rem;
  --font-body: "WERAINBOW YaHei", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  --font-title: var(--font-body);
  --transition: 220ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--color-text);
  background: var(--color-background);
  font-family: var(--font-body);
  font-size: var(--body-size);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-title);
}

body.nav-open {
  overflow: hidden;
}

body.modal-open {
  overflow: hidden;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

[data-article-link] {
  cursor: pointer;
}

[data-article-link]:focus-visible {
  outline: 3px solid var(--color-primary-strong);
  outline-offset: 4px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid #245f78;
  outline-offset: 4px;
}

/* Keep every single-choice select arrow aligned consistently across the site. */
select:not([multiple]) {
  -webkit-appearance: none;
  appearance: none;
  padding-right: 52px !important;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--color-text) 50%),
    linear-gradient(135deg, var(--color-text) 50%, transparent 50%) !important;
  background-position:
    calc(100% - 26px) 50%,
    calc(100% - 21px) 50% !important;
  background-size: 5px 5px !important;
  background-repeat: no-repeat !important;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.container {
  width: min(100%, var(--container));
  margin-inline: auto;
  padding-inline: clamp(24px, 4vw, 64px);
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 16px;
  left: 16px;
  padding: 12px 18px;
  color: var(--color-white);
  background: #173b4a;
  border-radius: 8px;
  transform: translateY(-160%);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 100;
  min-height: var(--header-height);
  color: var(--color-white);
  background: var(--color-primary);
}

.site-header__inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  gap: clamp(22px, 3vw, 50px);
}

.brand {
  flex: 0 0 auto;
}

.brand img {
  width: clamp(190px, 16vw, 250px);
  height: auto;
}

.site-header .brand img,
.site-footer__brand > img {
  filter: brightness(0) invert(1);
}

.primary-nav {
  margin-left: auto;
  display: flex;
  align-self: stretch;
  align-items: center;
  gap: clamp(18px, 2vw, 36px);
  white-space: nowrap;
}

.primary-nav a {
  position: relative;
  padding: 14px 0;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: opacity var(--transition);
}

.primary-nav a:hover {
  opacity: 0.72;
}

.primary-nav a.is-active::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 7px;
  left: 0;
  height: 2px;
  background: currentcolor;
}

.primary-nav__item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.primary-nav__item--dropdown > a {
  padding-right: 0;
}

.primary-nav__dropdown-toggle {
  display: none;
}

.primary-nav__dropdown {
  position: absolute;
  z-index: 130;
  top: 100%;
  left: 0;
  width: 180px;
  padding: 6px 12px;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-top: 0;
  border-radius: 0 0 8px 8px;
  box-shadow: 0 14px 34px rgb(44 67 76 / 16%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(0, 10px);
  transition:
    opacity 180ms ease,
    visibility 180ms ease,
    transform 180ms ease;
}

.primary-nav .primary-nav__dropdown a {
  display: block;
  padding: 11px 14px;
  border-bottom: 1px solid var(--color-line);
  border-radius: 0;
  font-size: 0.88rem;
  font-weight: 600;
}

.primary-nav .primary-nav__dropdown a:last-child {
  border-bottom: 0;
}

.primary-nav .primary-nav__dropdown a:hover,
.primary-nav .primary-nav__dropdown a:focus-visible {
  color: var(--color-text);
  background: rgb(168 192 202 / 24%);
  opacity: 1;
}

.primary-nav__item--dropdown:hover .primary-nav__dropdown,
.primary-nav__item--dropdown:focus-within .primary-nav__dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(0, 0);
}

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 10px 22px;
  border: 0;
  border-radius: var(--radius-small);
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    background-color var(--transition);
}

.button:hover {
  transform: translateY(-2px);
}

.button--header {
  flex: 0 0 auto;
  min-height: 38px;
  color: var(--color-white);
  background: rgb(255 255 255 / 20%);
  border: 1px solid rgb(255 255 255 / 28%);
}

.button--primary,
.button--small {
  color: var(--color-white);
  background: var(--color-primary-strong);
}

.button--primary:hover,
.button--small:hover {
  background: #7d9fac;
  box-shadow: 0 10px 22px rgb(64 96 109 / 22%);
}

.button--small {
  min-height: 36px;
  padding: 9px 16px;
  font-size: 0.86rem;
  border: 1px solid var(--color-white);
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  margin-left: auto;
  padding: 11px;
  border: 1px solid rgb(255 255 255 / 40%);
  border-radius: 8px;
  color: var(--color-white);
  background: transparent;
}

.nav-toggle span {
  width: 100%;
  height: 2px;
  display: block;
  background: currentcolor;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle span + span {
  margin-top: 6px;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.section {
  position: relative;
  padding-block: var(--section-space);
}

.section-title {
  margin-bottom: var(--section-title-gap);
  color: var(--color-primary);
  font-size: var(--title-size);
  font-weight: 800;
  line-height: 1.08;
  text-align: center;
  text-transform: uppercase;
}

.section-title--light {
  color: var(--color-white);
}

.section-rail {
  position: absolute;
  z-index: 0;
  pointer-events: none;
  user-select: none;
}

.inquiry-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.inquiry-form .form-field {
  display: grid;
  gap: 8px;
}

.inquiry-form .form-field--full {
  grid-column: 1 / -1;
}

.inquiry-form label {
  color: var(--color-text);
  font-weight: 700;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 15px;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: 8px;
}

.inquiry-form textarea {
  min-height: 150px;
  resize: vertical;
}

.inquiry-modal[hidden] {
  display: none;
}

.inquiry-modal {
  position: fixed;
  z-index: 300;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
}

.inquiry-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26, 42, 49, 0.62);
  backdrop-filter: blur(4px);
}

.inquiry-modal__dialog {
  position: relative;
  z-index: 1;
  width: min(680px, 100%);
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  padding: clamp(28px, 4vw, 48px);
  border-radius: var(--radius-medium);
  background: var(--color-white);
  box-shadow: 0 30px 90px rgba(20, 43, 54, 0.3);
}

.inquiry-modal__close {
  position: absolute;
  top: 18px;
  right: 18px;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  background: var(--color-white);
  color: var(--color-text);
  cursor: pointer;
  font: inherit;
  font-size: 1.35rem;
  line-height: 1;
}

.inquiry-modal__eyebrow {
  margin: 0 0 10px;
  color: var(--color-primary-strong);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.inquiry-modal h2 {
  max-width: 520px;
  margin: 0 46px 10px 0;
  font-size: var(--title-size-subsection);
}

.inquiry-modal__intro {
  max-width: 560px;
  margin: 0 0 26px;
  color: var(--color-text-soft);
  font-size: 0.9rem;
}

.inquiry-modal__form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.inquiry-modal__field {
  display: grid;
  gap: 7px;
}

.inquiry-modal__field--full {
  grid-column: 1 / -1;
}

.inquiry-modal__field label {
  color: var(--color-text);
  font-size: 0.78rem;
  font-weight: 800;
}

.inquiry-modal__field input,
.inquiry-modal__field select,
.inquiry-modal__field textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--color-line);
  border-radius: 7px;
  background: var(--color-white);
  color: var(--color-text);
  font: inherit;
  font-size: 0.88rem;
  outline: none;
}

.inquiry-modal__field input,
.inquiry-modal__field select {
  min-height: 46px;
  padding: 0 13px;
}

.inquiry-modal__field textarea {
  min-height: 120px;
  padding: 12px 13px;
  resize: vertical;
}

.inquiry-modal__field input:focus,
.inquiry-modal__field select:focus,
.inquiry-modal__field textarea:focus {
  border-color: var(--color-primary-strong);
}

.inquiry-modal__submit {
  grid-column: 1 / -1;
  min-height: 48px;
  margin-top: 4px;
  border: 0;
  border-radius: 7px;
  background: var(--color-primary-strong);
  color: var(--color-white);
  cursor: pointer;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 800;
}

.site-footer {
  position: relative;
  padding-top: var(--section-space-compact);
  color: var(--color-white);
  background: var(--color-primary-strong);
  overflow: hidden;
}

.site-footer::after {
  content: "";
  position: absolute;
  z-index: 0;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 160px;
  background: linear-gradient(
    90deg,
    rgb(255 255 255 / 13%) 0 33.84%,
    transparent 33.84% 46.97%,
    rgb(255 255 255 / 13%) 46.97% 72.73%,
    transparent 72.73% 85.86%,
    rgb(255 255 255 / 13%) 85.86% 100%
  );
  opacity: 0.18;
  transform: translateX(-50%);
  pointer-events: none;
}

.site-footer__grid,
.site-footer__bottom {
  position: relative;
  z-index: 1;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.55fr 0.8fr 0.8fr 0.9fr;
  gap: 80px;
}

.site-footer__brand > img {
  width: min(350px, 100%);
  margin-bottom: 56px;
}

.button--footer {
  width: min(330px, 100%);
  margin-bottom: 30px;
  color: var(--color-primary-strong);
  background: var(--color-white);
  border-radius: 999px;
}

.site-footer h2 {
  margin-bottom: 30px;
  font-family: var(--font-body);
  font-size: var(--title-size-footer);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.site-footer__links,
.site-footer__contact {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.site-footer__links a,
.site-footer__contact > a {
  margin-bottom: 13px;
  color: rgb(255 255 255 / 84%);
}

.site-footer__follow-title {
  margin-top: 48px;
}

.social-links {
  display: flex;
  gap: 20px;
}

.social-links a {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--color-primary-strong);
  background: var(--color-white);
  border-radius: 50%;
  font-weight: 800;
}

.social-links svg {
  width: 18px;
  height: 18px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.social-links svg.social-icon--brand {
  fill: currentColor;
  stroke: none;
}

.site-footer__bottom {
  margin-top: 90px;
  padding-bottom: 30px;
  text-align: center;
}

.site-footer__bottom h2 {
  margin-bottom: 20px;
}

.site-footer__bottom p {
  margin-bottom: 20px;
  color: rgb(255 255 255 / 88%);
  font-size: 0.93rem;
}


@media (max-width: 1180px) {
  :root {
    --header-height: 82px;
  }

  .site-header__inner {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: block;
  }

  .primary-nav {
    position: fixed;
    z-index: 110;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    left: 0;
    margin: 0;
    height: auto;
    padding: 18px clamp(24px, 5vw, 64px) 30px;
    display: grid;
    align-self: auto;
    align-content: start;
    gap: 4px;
    color: var(--color-text);
    background: var(--color-surface);
    box-shadow: inset 0 1px 0 rgb(255 255 255 / 42%);
    transform: translateX(100%);
    transition: transform 260ms ease;
  }

  body.admin-bar .primary-nav {
    top: calc(var(--header-height) + 32px);
  }

  .primary-nav.is-open {
    transform: translateX(0);
  }

  .primary-nav a {
    padding: 17px 0;
    border-bottom: 1px solid var(--color-line);
  }

  .primary-nav a.is-active::after {
    display: none;
  }

  .primary-nav__item {
    height: auto;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 48px;
  }

  .primary-nav__item--dropdown > a {
    padding-right: 0;
  }

  .primary-nav__dropdown-toggle {
    position: relative;
    width: 48px;
    height: 100%;
    display: block;
    padding: 0;
    border: 0;
    border-bottom: 1px solid var(--color-line);
    color: var(--color-primary-strong);
    background: transparent;
    cursor: pointer;
  }

  .primary-nav__dropdown-toggle::before,
  .primary-nav__dropdown-toggle::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 12px;
    height: 1.5px;
    background: currentcolor;
    transform: translate(-50%, -50%);
    transition: transform 180ms ease;
  }

  .primary-nav__dropdown-toggle::after {
    transform: translate(-50%, -50%) rotate(90deg);
  }

  .primary-nav__item--dropdown.is-open .primary-nav__dropdown-toggle::after {
    transform: translate(-50%, -50%) rotate(0deg);
  }

  .primary-nav__dropdown {
    position: static;
    width: auto;
    max-height: 0;
    grid-column: 1 / -1;
    padding: 0 0 0 18px;
    border: 0;
    border-radius: 0;
    color: var(--color-text-muted);
    background: transparent;
    box-shadow: none;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    pointer-events: none;
    transform: none;
    transition:
      max-height 220ms ease,
      opacity 180ms ease,
      visibility 180ms ease;
  }

  .primary-nav__item--dropdown:hover .primary-nav__dropdown,
  .primary-nav__item--dropdown:focus-within .primary-nav__dropdown {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: none;
  }

  .primary-nav__item--dropdown.is-open .primary-nav__dropdown {
    max-height: 180px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .primary-nav .primary-nav__dropdown a {
    padding: 13px 0;
    border-radius: 0;
    color: var(--color-text-muted);
  }

  .button--header {
    display: none;
  }
}

@media (max-width: 782px) {
  body.admin-bar .primary-nav {
    top: calc(var(--header-height) + 46px);
  }
}

@media (max-width: 1100px) {
  .site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .site-footer {
    padding-top: 80px;
  }

  .site-footer__grid {
    gap: 56px 32px;
  }
}

@media (max-width: 640px) {
  .container {
    padding-inline: 20px;
  }

  .section {
    padding-block: var(--section-space);
  }

  .inquiry-form {
    grid-template-columns: 1fr;
  }

  .inquiry-modal {
    padding: 14px;
  }

  .inquiry-modal__dialog {
    max-height: calc(100vh - 28px);
    padding: 32px 20px 24px;
  }

  .inquiry-modal__form {
    grid-template-columns: 1fr;
  }

  .inquiry-modal__field--full,
  .inquiry-modal__submit {
    grid-column: auto;
  }
}

@media (max-width: 540px) {
  .site-footer {
    padding-top: 52px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .site-footer__brand > img {
    width: min(286px, 100%);
    margin-bottom: 32px;
  }

  .button--footer {
    margin-bottom: 18px;
  }

  .site-footer h2 {
    margin-bottom: 18px;
  }

  .site-footer__links a,
  .site-footer__contact > a {
    margin-bottom: 8px;
  }

  .site-footer__follow-title {
    margin-top: 26px;
  }

  .social-links {
    gap: 16px;
  }

  .site-footer__bottom {
    margin-top: 48px;
    padding-bottom: 22px;
  }

  .site-footer__bottom h2,
  .site-footer__bottom p {
    margin-bottom: 12px;
  }

}

/* Shared scroll-reveal motion for every page. Elements stay readable when JS is unavailable. */
[data-reveal] {
  opacity: 1;
  translate: none;
}

html.reveal-ready [data-reveal] {
  opacity: 0;
  translate: 0 24px;
  transition:
    opacity 680ms cubic-bezier(0.22, 1, 0.36, 1),
    translate 680ms cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, translate;
}

html.reveal-ready [data-reveal].is-visible {
  opacity: 1;
  translate: 0 0;
  will-change: auto;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  html.reveal-ready [data-reveal] {
    opacity: 1;
    translate: none;
    transition: none;
  }
}