:root {
  --primary: #0278c0;
  --primary-light: #61b5e6;
  --primary-dark: #015a91;
  --primary-soft: rgba(2, 120, 192, 0.1);
  --ink: #132033;
  --muted: #5b6b7c;
  --line: rgba(19, 32, 51, 0.1);
  --bg: #f3f7fb;
  --surface: #ffffff;
  --on-dark: #f4f8fc;
  --bar-bg: linear-gradient(90deg, #0278c0 0%, #3a9ad4 55%, #61b5e6 100%);
  --shadow: 0 18px 40px rgba(19, 32, 51, 0.08);
  --radius: 6px;
  --container: 1160px;
  --font-display: "Sora", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Sora", sans-serif;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(2, 120, 192, 0.08), transparent 55%),
    linear-gradient(180deg, #eef4f9 0%, #f7fafc 40%, #ffffff 100%);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

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

.container {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}

/* Topbar */
.topbar {
  background: var(--bar-bg);
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.875rem;
}

.topbar__inner {
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.topbar__hotline {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.2rem 0;
  min-width: 0;
  flex: 1;
}

.topbar__item {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.topbar__hotline a {
  color: #fff;
  font-weight: 600;
  margin-left: 0.25rem;
}

.topbar__sep {
  margin: 0 0.55rem;
  opacity: 0.55;
  flex-shrink: 0;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: rgba(255, 255, 255, 0.7);
  padding: 0.25rem 0;
  flex-shrink: 0;
  white-space: nowrap;
}

.lang-switch [data-lang] {
  white-space: nowrap;
}

.lang-switch [data-lang].is-active,
.lang-switch__active.is-active {
  color: #fff;
  font-weight: 600;
}

.lang-switch [data-lang]:hover {
  color: #fff;
}

.lang-switch__divider {
  opacity: 0.45;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 8px 24px rgba(19, 32, 51, 0.05);
}

.header__inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  max-width: min(100%, 280px);
}

.brand__logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  /* background: #0a0a0a; */
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  min-width: 0;
}

.brand__text strong {
  font-family: var(--font-display);
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand__text small {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 500;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav__link {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.7rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink);
  position: relative;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0.7rem;
  right: 0.7rem;
  bottom: 0.2rem;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s var(--ease);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--primary);
}

.nav__link:hover::after,
.nav__link.is-active::after {
  transform: scaleX(1);
}

.has-dropdown {
  position: relative;
}

.dropdown {
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 0;
  min-width: 220px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.45rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
}

.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown a {
  display: block;
  padding: 0.65rem 0.8rem;
  border-radius: 4px;
  font-size: 0.9rem;
  color: var(--muted);
}

.dropdown a:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  place-items: center;
  gap: 5px;
  flex-direction: column;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s var(--ease), opacity 0.25s;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: min(88vh, 760px);
  display: grid;
  align-items: end;
  color: var(--on-dark);
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  animation: heroZoom 14s var(--ease) forwards;
}

.hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(2, 120, 192, 0.72) 0%, rgba(2, 120, 192, 0.48) 48%, rgba(97, 181, 230, 0.35) 100%),
    linear-gradient(0deg, rgba(2, 120, 192, 0.42), transparent 50%);
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 5.5rem 0 4.5rem;
  max-width: 760px;
  margin-left: max((100% - var(--container)) / 2, 1.25rem);
  margin-right: auto;
  width: min(100% - 2.5rem, 760px);
}

.hero__brand {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
}

.hero__title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  font-weight: 600;
  line-height: 1.25;
  max-width: 16ch;
}

.hero__lead {
  margin: 0 0 1.75rem;
  max-width: 36ch;
  color: rgba(244, 248, 252, 0.86);
  font-size: 1.02rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.7rem 1.35rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
}

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

.btn--primary:hover {
  background: var(--primary-dark);
}

.btn--ghost {
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: #fff;
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.btn--light {
  background: #fff;
  color: var(--primary-dark);
}

.btn--light:hover {
  background: #e8f4fc;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.92rem;
}

.text-link::after {
  content: "→";
  transition: transform 0.2s var(--ease);
}

.text-link:hover::after {
  transform: translateX(3px);
}

/* Sections */
.section {
  padding: 5.5rem 0;
}

.section--tint {
  background:
    linear-gradient(180deg, rgba(2, 120, 192, 0.05), rgba(2, 120, 192, 0.02));
}

.section__head {
  max-width: 640px;
  margin-bottom: 2.5rem;
}

.section__eyebrow {
  margin: 0 0 0.55rem;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section__eyebrow--on-dark {
  color: rgba(255, 255, 255, 0.78);
}

.section__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 2.6vw, 2.1rem);
  line-height: 1.25;
}

.section__desc {
  margin: 0;
  color: var(--muted);
  max-width: 48ch;
}

/* Product cards - interaction containers */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 28px rgba(19, 32, 51, 0.04);
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.feature-card__visual {
  display: block;
  height: 190px;
  background:
    linear-gradient(180deg, rgba(8, 28, 48, 0.15), rgba(8, 28, 48, 0.35)),
    var(--img) center / cover no-repeat;
}

.feature-card__body {
  padding: 1.35rem 1.4rem 1.5rem;
}

.feature-card__body h3 {
  margin: 0 0 0.55rem;
  font-size: 1.12rem;
}

.feature-card__body h3 a:hover {
  color: var(--primary);
}

.feature-card__body p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.feature-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  align-items: center;
}

/* Scene */
.scene-banner {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  min-height: 360px;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
}

.scene-banner__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
}

.scene-banner__content {
  padding: 2.4rem 2.2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1rem;
}

.scene-banner__content h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.55rem;
}

.scene-banner__content h3 a:hover {
  color: var(--primary);
}

.scene-banner__content p {
  margin: 0;
  color: var(--muted);
}

.scene-banner__content .btn {
  align-self: flex-start;
  margin-top: 0.4rem;
}

/* Services */
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.service-item {
  padding: 1.5rem 1.25rem;
  border-top: 2px solid var(--primary);
  background: rgba(255, 255, 255, 0.72);
}

.service-item__index {
  display: block;
  font-family: var(--font-display);
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 0.9rem;
}

.service-item h3 {
  margin: 0 0 0.65rem;
  font-size: 1.05rem;
  line-height: 1.4;
}

.service-item h3 a:hover {
  color: var(--primary);
}

.service-item p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.93rem;
}

/* Cloud CTA */
.cloud-cta {
  background:
    linear-gradient(120deg, #053a5f 0%, var(--primary) 55%, #0490e0 100%);
  color: var(--on-dark);
  padding: 3.5rem 0;
}

.cloud-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.cloud-cta h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
}

.cloud-cta p:last-of-type {
  margin: 0;
  color: rgba(255, 255, 255, 0.84);
  max-width: 48ch;
}

/* Agent */
.agent {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2.5rem;
  align-items: center;
  padding: 2.5rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(2, 120, 192, 0.06), transparent 50%),
    var(--surface);
}

.agent__points {
  display: grid;
  gap: 0.85rem;
}

.agent__points li {
  padding: 1rem 1.1rem;
  background: var(--bg);
  border-left: 3px solid var(--primary);
  font-weight: 500;
}

/* About + News */
.about-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-copy p:not(.section__eyebrow) {
  color: var(--muted);
  margin: 0 0 1.2rem;
}

.news__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.news__head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.news__list {
  display: grid;
  gap: 0.75rem;
}

.news__list li {
  display: grid;
  gap: 0.25rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.news__list time {
  color: var(--muted);
  font-size: 0.85rem;
}

.news__list a {
  font-weight: 500;
}

.news__list a:hover {
  color: var(--primary);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.contact-card {
  padding: 1.4rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.contact-card h3 {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: 500;
}

.contact-card p {
  margin: 0;
  font-weight: 600;
  font-size: 1.02rem;
}

.contact-card a:hover {
  color: var(--primary);
}

.section-more {
  margin: 2rem 0 0;
  text-align: center;
}

/* Inner pages */
.page-banner {
  background:
    linear-gradient(120deg, rgba(2, 120, 192, 0.92), rgba(97, 181, 230, 0.88)),
    linear-gradient(180deg, #0278c0, #61b5e6);
  color: #fff;
  padding: 3.2rem 0 2.8rem;
}

.page-banner--sm {
  padding: 2.4rem 0 2rem;
}

.page-banner__inner {
  max-width: 760px;
}

.page-banner__eyebrow {
  margin: 0 0 0.55rem;
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.9;
}

.page-banner__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  line-height: 1.25;
}

.page-banner__desc {
  margin: 0;
  max-width: 48ch;
  color: rgba(255, 255, 255, 0.9);
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 2rem;
  align-items: start;
}

.detail-narrow {
  max-width: 860px;
}

.detail-cover {
  margin-bottom: 1.5rem;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.detail-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.rich-content {
  color: var(--muted);
  line-height: 1.85;
  font-size: 1.02rem;
}

.rich-content h2,
.rich-content h3 {
  color: var(--ink);
  margin: 1.6rem 0 0.75rem;
}

.rich-content p {
  margin: 0 0 1rem;
}

.rich-content ul {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
  list-style: disc;
}

.rich-content li {
  margin-bottom: 0.4rem;
}

.video-box {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.video-box__title {
  margin: 0 0 1rem;
  font-size: 1.15rem;
}

.video-box__frame {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  border-radius: 10px;
  overflow: hidden;
  background: #0b2740;
}

.video-box__frame iframe,
.video-box__frame video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-box__frame video {
  object-fit: contain;
  background: #0b2740;
}

.video-list {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.video-list__title {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.video-list__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.1rem;
}

.video-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface);
}

.video-card__title {
  margin: 0;
  padding: 0.85rem 1rem;
  font-size: 0.98rem;
  line-height: 1.4;
}

.detail-back {
  margin: 2rem 0 0;
}

.detail-side {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  position: sticky;
  top: calc(var(--header-h) + 56px);
}

.detail-side h3 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
}

.side-list {
  display: grid;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}

.side-list a {
  display: block;
  color: var(--muted);
  font-size: 0.95rem;
}

.side-list a:hover {
  color: var(--primary);
}

.scene-list {
  display: grid;
  gap: 1.5rem;
}

.service-grid--page .service-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.5rem;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.news-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.news-card__cover {
  display: block;
  height: 160px;
  background: var(--img) center / cover no-repeat;
}

.news-card__body {
  padding: 1.2rem 1.25rem 1.4rem;
}

.news-card__body time {
  color: var(--muted);
  font-size: 0.85rem;
}

.news-card__body h3 {
  margin: 0.4rem 0 0.55rem;
  font-size: 1.05rem;
  line-height: 1.4;
}

.news-card__body h3 a:hover {
  color: var(--primary);
}

.news-card__body p {
  margin: 0 0 0.9rem;
  color: var(--muted);
  font-size: 0.93rem;
}

.contact-page,
.agent-page {
  display: grid;
  gap: 2rem;
}

.contact-form-panel,
.agent__form-wrap {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.75rem;
}

.contact-form-panel h2,
.agent__form-wrap h3 {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.inquiry-form__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.inquiry-form label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.inquiry-form__full {
  margin-top: 1rem;
}

.inquiry-form input,
.inquiry-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.7rem 0.85rem;
  font: inherit;
  color: var(--ink);
  background: #fff;
}

.inquiry-form input:focus,
.inquiry-form textarea:focus {
  outline: 2px solid rgba(2, 120, 192, 0.25);
  border-color: var(--primary);
}

.inquiry-form__actions {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
}

.inquiry-form__msg {
  margin: 0;
  font-size: 0.92rem;
}

.inquiry-form__msg.is-ok {
  color: #0a7a45;
}

.inquiry-form__msg.is-err {
  color: #c0392b;
}

.agent-page .agent {
  grid-template-columns: 1fr 1.1fr;
}

/* Footer */
.footer {
  background: var(--bar-bg);
  color: rgba(255, 255, 255, 0.88);
  padding: 2rem 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 1.4fr auto;
  gap: 1.25rem 2rem;
  align-items: center;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer__logo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  /* background: #0a0a0a; */
  flex-shrink: 0;
}

.footer__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  gap: 0.15rem;
}

.footer__brand-text strong {
  font-family: var(--font-display);
  color: #fff;
  font-size: 0.95rem;
}

.footer__brand-text span {
  font-size: 0.78rem;
  opacity: 0.85;
}

.footer__contacts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  font-size: 0.9rem;
}

.footer__contacts p {
  margin: 0;
}

.footer__contacts a {
  color: #fff;
  font-weight: 600;
  margin-left: 0.25rem;
}

.footer__contacts a:hover {
  text-decoration: underline;
}

.footer__copy {
  margin: 0;
  font-size: 0.85rem;
  opacity: 0.9;
  text-align: right;
}

/* Reveal motion */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes heroZoom {
  from { transform: scale(1.04); }
  to { transform: scale(1); }
}

/* Responsive */
@media (max-width: 1024px) {
  .service-grid,
  .contact-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .scene-banner,
  .agent,
  .about-layout,
  .detail-layout,
  .video-list__grid {
    grid-template-columns: 1fr;
  }

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

  .footer__copy {
    text-align: left;
  }
}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav {
    position: fixed;
    inset: calc(40px + var(--header-h)) 0 auto 0;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    padding: 0.75rem 1.25rem 1.25rem;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), visibility 0.3s;
    max-height: calc(100vh - 112px);
    overflow: auto;
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
  }

  .nav__list > li {
    border-bottom: 1px solid var(--line);
  }

  .nav__list > li:last-child {
    border-bottom: 0;
  }

  .nav__link {
    display: block;
    width: 100%;
    box-sizing: border-box;
    padding: 1rem 0.85rem;
    min-height: 48px;
  }

  .nav__link::after {
    display: none;
  }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 0;
    background: var(--bg);
    margin: 0;
    display: none;
    padding: 0 0 0.35rem;
  }

  .has-dropdown.is-open .dropdown {
    display: block;
  }

  .dropdown a {
    display: block;
    width: 100%;
    box-sizing: border-box;
    padding: 0.9rem 1.1rem 0.9rem 1.5rem;
    min-height: 44px;
  }

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

  .hero__content {
    padding-top: 4.5rem;
    padding-bottom: 3.5rem;
  }
}

@media (max-width: 640px) {
  .service-grid,
  .contact-grid,
  .news-grid,
  .inquiry-form__grid {
    grid-template-columns: 1fr;
  }

  .cloud-cta__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .agent {
    padding: 1.5rem;
  }

  .hero {
    min-height: 78vh;
  }

  .brand__text strong {
    font-size: 0.82rem;
    white-space: normal;
  }

  .topbar__inner {
    align-items: flex-start;
    padding-top: 0.45rem;
    padding-bottom: 0.45rem;
  }

  .topbar__hotline {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
    font-size: 0.78rem;
  }

  .topbar__sep {
    display: none;
  }

  .lang-switch {
    padding-top: 0.1rem;
    white-space: nowrap;
  }
}