:root {
  --blue: #4ac4f3;
  --blue-dark: #118bba;
  --ink: #232323;
  --text: #666666;
  --muted: #76808f;
  --gray: #edf5ff;
  --line: #e7e7e7;
  --dark: #0b1b33;
  --shadow: 0 16px 45px rgba(16, 32, 58, .09);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 82px;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background: #fff;
  font-family: "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}

[v-cloak] { display: none !important; }

img { max-width: 100%; }

a { text-decoration: none; }

h2, h3, h4, h5 { color: var(--ink); margin: 0; }

.container { width: 100%; }

/* Navigation */
.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  min-height: 84px;
  display: flex;
  align-items: center;
  transition: background .3s ease, box-shadow .3s ease, min-height .3s ease;
}

.site-nav.scrolled {
  min-height: 74px;
  background: rgba(9, 22, 42, .96);
  box-shadow: 0 8px 30px rgba(5, 13, 26, .16);
  backdrop-filter: blur(14px);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue), #00b8ff);
  box-shadow: 0 8px 18px rgba(74, 196, 243, .36);
}

.brand-text {
  color: #fff;
  font-size: 23px;
  font-weight: 800;
  letter-spacing: .04em;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-menu a {
  position: relative;
  padding: 10px 16px;
  color: rgba(255, 255, 255, .82);
  font-size: 15px;
  font-weight: 600;
  transition: color .2s ease;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--blue);
  opacity: 0;
  transform: translateY(5px);
  transition: .25s ease;
}

.nav-menu a:hover,
.nav-menu a.active { color: #fff; }

.nav-menu a:hover::after,
.nav-menu a.active::after {
  opacity: 1;
  transform: translateY(0);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 40px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  margin: 5px auto;
  border-radius: 2px;
  background: #fff;
}

/* Banner */
.banner-area,
.banner-area div {
  height: auto;
}

.banner-area {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 160px 0 90px;
  background-color: var(--dark);
  background-image: url("/promo/pc/images/11.png");
  background-position: bottom center;
  background-size: cover;
  overflow: hidden;
}

.banner-area::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(105deg, rgba(5,16,33,.93) 5%, rgba(7,27,53,.77) 45%, rgba(8,34,64,.44));
}

.banner-overlay { display: none; }

.banner-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  align-items: center;
  gap: 60px;
}

.banner-copy h2 {
  color: #fff;
  font-size: 52px;
  font-weight: 800;
  line-height: 1.35;
  margin: 0 0 28px;
}

.banner-copy h2 strong {
  display: block;
  color: #fff;
  font-size: 44px;
  font-weight: 300;
  letter-spacing: .02em;
}

.banner-copy p {
  max-width: 590px;
  margin: 0 0 40px;
  color: rgba(255, 255, 255, .84);
  font-size: 16px;
  line-height: 2;
}

.contact-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 138px;
  padding: 14px 29px;
  border-radius: 4px;
  color: var(--ink);
  background: #fff;
  font-size: 15px;
  font-weight: 700;
  transition: transform .2s ease, box-shadow .2s ease, color .2s ease;
  box-shadow: 0 12px 28px rgba(4, 14, 28, .2);
}

.contact-button:hover,
.contact-button:focus-visible {
  transform: translateY(-2px);
  color: var(--blue-dark);
  box-shadow: 0 16px 36px rgba(4, 14, 28, .27);
}

.banner-thumb { position: relative; }

.banner-thumb img {
  width: 100%;
  display: block;
  filter: drop-shadow(0 26px 50px rgba(3, 13, 27, .32));
}

/* Common section */
.default-padding {
  padding: 120px 0;
}

.section-head {
  max-width: 760px;
  margin: 0 auto 72px;
  text-align: center;
}

.section-head h2,
.section-head h3 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.4;
}

.section-head p {
  margin: 20px 0 0;
}

.divider {
  display: block;
  width: 82px;
  height: 4px;
  margin: 20px auto 0;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--blue-dark), var(--blue), #00b8ff);
}

/* About */
.about-area {
  position: relative;
  overflow: hidden;
}

.about-shape {
  position: absolute;
  top: 0;
  left: 0;
  width: 290px;
  opacity: .65;
  pointer-events: none;
}

.about-inner,
.choose-inner {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  align-items: center;
  gap: 70px;
}

.about-gallery {
  position: relative;
  margin: 0 0 54px;
}

.about-image {
  display: block;
  width: 100%;
  aspect-ratio: 2184 / 1956;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 20px 55px rgba(18, 35, 62, .13);
}

.about-gallery figcaption {
  position: absolute;
  left: 0;
  bottom: -48px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.about-info h4 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 26px;
}

.about-info ul,
.choose-info ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.about-info li {
  position: relative;
  padding: 0 0 24px 34px;
}

.about-info li:last-child { padding-bottom: 0; }

.about-info li::before {
  position: absolute;
  left: 0;
  top: 6px;
  width: 18px;
  height: 18px;
  content: "";
  border-radius: 50%;
  background: rgba(74, 196, 243, .16);
  box-shadow: inset 0 0 0 4px rgba(74,196,243,.82);
}

.about-info h5 {
  font-size: 17px;
  font-weight: 700;
}

.about-info p,
.choose-info > p {
  margin: 4px 0 0;
}

/* Features */
.our-features-area {
  position: relative;
  padding: 120px 0 70px;
  overflow: hidden;
}

.feature-bg {
  position: absolute;
  inset: 0;
  background: url("/promo/pc/images/17.png") center / cover no-repeat;
  opacity: .32;
}

.our-features-area > .container { position: relative; z-index: 1; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
}

.feature-card {
  min-height: 100%;
  padding: 40px 30px 36px;
  border: 1px solid rgba(231, 231, 231, .85);
  border-radius: 8px;
  background: rgba(255, 255, 255, .9);
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease;
}

.feature-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 24px 60px rgba(16, 32, 58, .13);
}

.feature-card h3 {
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p { margin: 0; }

.feature-icon {
  width: 88px;
  height: 88px;
  margin-bottom: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(74, 196, 243, .1);
}

.feature-icon i {
  color: var(--blue) !important;
  font-size: 48px !important;
  background: none !important;
  -webkit-text-fill-color: currentColor !important;
}

/* Choose */
.choose-us-area {
  background: var(--gray);
}

.choose-us-area.left-border::before {
  position: absolute;
  left: 0;
  top: 0;
  width: 12px;
  height: 100%;
  content: "";
  background: linear-gradient(180deg, var(--blue), #00b8ff);
}

.choose-us-area.padding-bottom-extra { padding-bottom: 210px; }

.choose-thumb {
  position: relative;
  margin: 0;
  display: grid;
  place-items: center;
}

.choose-thumb::before,
.choose-thumb::after {
  position: absolute;
  border-radius: 50%;
  background: #fff;
  content: "";
}

.choose-thumb::before { width: 430px; height: 430px; z-index: -1; }
.choose-thumb::after { width: 500px; height: 500px; opacity: .5; z-index: -2; }

.choose-thumb img {
  position: relative;
  z-index: 1;
  width: 100%;
}

.choose-info { padding-left: 35px; }

.choose-info h4 {
  color: var(--blue);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.choose-info h2 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 24px;
}

.choose-info ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 24px;
  margin-top: 28px;
}

.choose-info ul li {
  position: relative;
  padding-left: 24px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.choose-info ul li::before {
  position: absolute;
  left: 0;
  top: 7px;
  width: 7px;
  height: 7px;
  content: "";
  border-radius: 50%;
  background: var(--blue);
}

.progress-box { margin-top: 36px; }

.progress-box h5 { font-weight: 700; }

.progress {
  position: relative;
  height: 8px;
  margin-top: 12px;
  overflow: visible;
  border-radius: 30px;
  background: #fff;
  box-shadow: 0 0 10px #ccc;
}

.progress-bar {
  position: relative;
  height: 100%;
  overflow: visible;
  border-radius: 30px;
  background: linear-gradient(90deg, var(--blue-dark), #00b8ff);
  transition: width 1.4s ease;
}

.progress-bar span {
  position: absolute;
  right: 0;
  top: -29px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
}

/* Stats */
.fun-factor-area { position: relative; z-index: 2; }

.fun-fact-items {
  position: relative;
  top: -88px;
  margin-bottom: -88px;
  padding: 78px 0;
  background: linear-gradient(97deg, var(--blue) 45%, #00b8ff);
  box-shadow: 0 20px 50px rgba(17, 139, 186, .24);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stat-item {
  padding: 4px 20px;
  border-right: 1px solid rgba(255, 255, 255, .3);
  text-align: center;
}

.stat-item:last-child { border-right: 0; }

.stat-item strong {
  display: block;
  color: #fff;
  font-size: 36px;
  font-weight: 800;
  line-height: 1.2;
}

.stat-item span {
  display: block;
  margin-top: 14px;
  color: rgba(255,255,255,.92);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
}

/* Contact */
.contact-head { margin-bottom: 58px; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 330px));
  justify-content: center;
  gap: 36px;
}

.contact-card {
  padding: 32px 34px 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
  text-align: center;
}

.contact-card img {
  width: 132px;
  height: 132px;
  border-radius: 10px;
}

.contact-card p {
  margin: 18px 0 0;
  color: var(--ink);
  font-weight: 700;
}

.contact-id {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.contact-id > div:last-of-type { display: grid; }

.contact-id span {
  color: var(--muted);
  font-size: 14px;
}

.contact-id strong {
  color: var(--ink);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: .03em;
}

.wechat-icon {
  width: 76px;
  height: 76px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: #22c15e;
  box-shadow: 0 12px 26px rgba(34, 193, 94, .25);
}

.wechat-icon svg {
  width: 41px;
  height: 41px;
  fill: currentColor;
}

.contact-id button {
  margin-top: 4px;
  padding: 10px 20px;
  border: 0;
  border-radius: 4px;
  color: #fff;
  background: linear-gradient(90deg, var(--blue-dark), #00b8ff);
  font-weight: 700;
  cursor: pointer;
  transition: opacity .2s ease, transform .2s ease;
}

.contact-id button:hover { opacity: .9; transform: translateY(-1px); }

/* Footer */
.site-footer {
  padding: 34px 20px;
  background: #121a28;
  color: rgba(255,255,255,.68);
  text-align: center;
}

.site-footer p { margin: 0 0 8px; }

.site-footer a {
  color: rgba(255,255,255,.68);
  font-size: 13px;
  transition: color .2s ease;
}

.site-footer a:hover { color: #fff; }

/* Entrance animation */
.reveal-item {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s ease, transform .7s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal-item { opacity: 1; transform: none; transition: none; }
}

/* Responsive */
@media (max-width: 1199px) {
  .banner-inner { gap: 44px; }
  .choose-thumb::before,
  .choose-thumb::after { display: none; }
}

@media (max-width: 991px) {
  .site-nav { min-height: 74px; }

  .nav-toggle { display: block; }

  .nav-menu {
    position: fixed;
    top: 74px;
    right: 0;
    width: min(78vw, 300px);
    height: calc(100vh - 74px);
    padding: 22px;
    display: block;
    background: rgba(9, 22, 42, .99);
    box-shadow: -12px 0 40px rgba(0,0,0,.2);
    transform: translateX(105%);
    transition: transform .28s ease;
  }

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

  .nav-menu a { display: block; padding: 14px 12px; }
  .nav-menu a::after { display: none; }

  .banner-area { min-height: auto; padding: 128px 0 70px; }
  .banner-inner { grid-template-columns: 1fr; gap: 54px; }
  .banner-copy h2 { font-size: 39px; }
  .banner-copy h2 strong { font-size: 33px; }
  .banner-thumb { max-width: 430px; }

  .about-inner,
  .choose-inner { grid-template-columns: 1fr; gap: 62px; }
  .about-gallery { margin-bottom: 76px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .choose-info { padding-left: 0; }
  .choose-us-area.padding-bottom-extra { padding-bottom: 180px; }
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 38px 0; }
  .stat-item:nth-child(2) { border-right: 0; }
  .contact-grid { grid-template-columns: 1fr; max-width: 390px; margin: 0 auto; }
}

@media (max-width: 767px) {
  .default-padding,
  .our-features-area { padding-top: 86px; padding-bottom: 86px; }

  .our-features-area { padding-bottom: 46px; }
  .about-shape { width: 170px; }
  .section-head { margin-bottom: 52px; }
  .section-head h2,
  .choose-info h2 { font-size: 30px; }
  .about-info h4 { font-size: 25px; }
  .feature-grid { grid-template-columns: 1fr; }
  .choose-us-area.padding-bottom-extra { padding-bottom: 155px; }
  .fun-fact-items { top: -66px; margin-bottom: -66px; padding: 58px 0; }
  .feature-icon { width: 76px; height: 76px; margin-bottom: 22px; }
  .feature-icon i { font-size: 41px !important; }
}

@media (max-width: 520px) {
  .brand-mark { width: 36px; height: 36px; font-size: 18px; }
  .brand-text { font-size: 18px; }
  .banner-copy h2 { font-size: 33px; }
  .banner-copy h2 strong { font-size: 28px; }
  .banner-copy p { font-size: 15px; line-height: 1.9; }
  .banner-thumb { max-width: 86%; margin: 0 auto; }
  .about-gallery { margin-bottom: 68px; }
  .about-gallery figcaption { font-size: 14px; }
  .choose-info ul { grid-template-columns: 1fr; }
  .stat-item { padding: 0 8px; }
  .stat-item strong { font-size: 29px; }
  .contact-card { padding: 26px 20px; }
}