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

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family:
    Inter,
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    Helvetica,
    Arial,
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
  color: #101828;
  background: #202020;
}

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

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

.page {
  min-width: 1200px;
}

.page__bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

/* Site Header Styles */
.site-header {
  width: 100%;
  height: 84px;
  background-color: transparent;
  padding: 16px 0;
  position: relative;
  z-index: 100;
}

.header-inner {
  width: 96%;
  margin: 0 auto;
  display: flex;
  justify-content: flex-end; /* Align nav to right since logo is absolute */
  align-items: center;
  padding: 0 20px;
}

.logo {
  position: absolute;
  width: 146px; 
  height: 63px; 
  left: 83px; 
  top: 10px; 
  z-index: 1;
}

.logo img {
  height: 100%;
  width: 100%;
  object-fit: contain;
}

.main-nav ul {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  align-items: center;
  gap: 0;
}

.main-nav li {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Menu Items (excluding separator) */
.main-nav li:not(.separator) {
    width: 184px;
    height: 34px;
}

.main-nav li.separator {
    width: 2px;
    height: 37px;
    background-color: #ffffff;
    margin: 0; /* Remove margin */
}

.main-nav a {
  color: #ffffff;
  font-size: 14px;
  font-weight: 400;
  text-decoration: none;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.3s;
  font-family: "Microsoft YaHei", sans-serif;
  letter-spacing: 0.5px;
}

.main-nav a:hover,
.main-nav a.active {
  color: #0192ab;
}

.wrap {
  width: 1200px;
  margin: 0 auto;
  padding: 34px 0 64px;
}

.hero {
  height: auto;
  display: grid;
  place-items: center;
  margin-bottom: 75px;
}

.hero__map {
  width: 100%;
  height: 600px;
  border-radius: 18px;
  position: relative;
  overflow: hidden;
}

.map-point {
  position: absolute;
  width: 8px;
  height: 8px;
  background-color: #ff0000;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  z-index: 10;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
}

.map-point:hover::after {
  display: none;
}

.map-point[title]:hover::after {
  content: attr(title);
  display: block;
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  margin-bottom: 6px;
  pointer-events: none;
}

.tooltip {
  display: none;
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255,255,255,0.3);
  color: #fff;
  padding: 10px 20px;
  border-radius: 5px 5px 5px 5px;
  width: max-content;
  z-index: 20;
  margin-bottom: 8px;
  backdrop-filter: blur(4px);
box-shadow: 0px 6px 4px 0px rgba(0,0,0,0.25);
  text-align: left;
  font-size: 12px;
  line-height: 1.5;
  pointer-events: none;
}

.map-point:hover .tooltip {
  display: block;
}

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

.tooltip li {
  white-space: nowrap;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.hero__mapImg {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  filter: saturate(1.05) contrast(1.1);
}

.charts {
  display: grid;
  grid-template-columns: 38% 1fr;
  gap: 18px;
  margin-bottom: 60px;
}

.chart-right {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.chart-row-top {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.chart-row-bottom {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.chart-left {
  height: 100%;
}

.chart-left img {
  height: 100%;
  object-fit: fill;
}

.charts img {
  width: 100%;
  display: block;
}

.charts .zoom-wrap {
  border-radius: 14px;
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.3);
  border: 1px solid #ffd905;
}

.card {
  background: #ffffff;
  border-radius: 14px;
  padding: 14px 16px 16px;
  box-shadow:
    0 12px 26px rgba(0, 0, 0, 0.3),
    0 2px 0 rgba(0, 0, 0, 0.08);
}

.card--chart {
  min-height: 176px;
}

.card--bar {
  min-height: 176px;
}

.card__hd {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}

.card__title {
  font-size: 12px;
  font-weight: 600;
  color: #111827;
  letter-spacing: 0.2px;
}

.card__bd {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.legend {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  font-size: 11px;
  color: #344054;
}

.legend li {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 99px;
  background: var(--c, #2f80ed);
  box-shadow: 0 0 0 2px rgba(17, 24, 39, 0.05) inset;
}

.chart {
  width: 100%;
  height: 118px;
  border-radius: 12px;
  background: linear-gradient(180deg, #f7f9fc, #ffffff);
  border: 1px solid rgba(16, 24, 40, 0.08);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.paper {
  padding: 0;
  margin-bottom: 22px;
}

.paper__intro {
  text-align: center;
  max-width: 900px;
  margin: 0 auto 18px;
}

.intro-text {
  text-align: center;
  width: 100%;
  margin: 0 0 40px;
  color: #ffffff;
  font-size: 18px;
  line-height: 1.6;
}

.nw_txt {
  color: #ffffff;
  font-size: 18px;
  margin: 60px 0 30px;
  text-align: center;
  line-height: 1.6;
}

.paper__title {
  font-weight: 700;
  font-size: 14px;
  color: #111827;
  margin-bottom: 8px;
}

.paper__desc {
  font-size: 12px;
  line-height: 1.6;
  color: #475467;
}

.paper__tableWrap {
  background: #ffffff;
  border-radius: 0;
  overflow: hidden;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  color: #000;
  table-layout: fixed;
}

.table thead th {
  background: #fff;
  color: #000;
  font-weight: 600;
  padding: 32px 10px;
  text-align: left;
  border: 1px solid #000;
  width: 20%;
}

.table tbody td {
  padding: 34px 10px;
  border: 1px solid #000;
  vertical-align: top;
  color: #000;
}

.table tbody tr:last-child td {
  border-bottom: 1px solid #000;
}

.cellTitle {
  font-weight: 600;
  margin-bottom: 4px;
}

.cellSub {
  color: #475467;
  line-height: 1.5;
}

.link {
  color: #2f80ed;
  font-weight: 600;
}

.paper__actions {
  background: #ffffff;
  display: flex;
  justify-content: center;
  padding: 15px 0;
  margin: 0 1px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 50px;
  border-radius: 999px;
  background: #0b3aa9;
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 10px 20px rgba(11, 58, 169, 0.35);
  gap: 8px;
}

.btn__icon {
  width: 12px;
  height: auto;
  display: block;
}

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

.compare {
  margin-bottom: 22px;
}

.compare__grid {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.compare-row-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.compare-row-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.compare-row-center {
  display: flex;
  justify-content: center;
  gap: 18px;
}

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

.compare .zoom-wrap {
  border: 1px solid #ffd905;
  border-radius: 10px 10px 10px 10px;
}

.compare-row-center .zoom-wrap {
  width: calc((100% - 36px) / 3);
}

/* --- Dark Section --- */
.dark {
  margin-bottom: 22px;
  position: relative;
}

.dark__inner {
  padding: 60px 0;
  position: relative;
  z-index: 1;
  display: block;
}

.dark__desc {
  text-align: center;
  color: #e5f0ff;
  width: fit-content;
  margin: 0 auto 40px;
  font-size: 16px;
  line-height: 1.6;
}

.dark__formula {
  text-align: center;
  color: #e5f0ff;
  margin-bottom: 50px;
  font-family: "Times New Roman", serif;
  font-size: 24px;
}

.formula__sigma-wrapper {
  display: inline-block;
  vertical-align: middle;
  margin: 0 10px;
  text-align: center;
}

.formula__sigma-top {
  font-size: 14px;
}

.formula__sigma-symbol {
  font-size: 32px;
  line-height: 1;
}

.formula__sigma-bottom {
  font-size: 14px;
}

.formula__fraction-wrapper {
  display: inline-block;
  vertical-align: middle;
  text-align: center;
}

.formula__fraction-top {
  border-bottom: 1px solid #e5f0ff;
  padding: 0 5px;
  line-height: 1.2;
}

.formula__fraction-bottom {
  padding: 0 5px;
  line-height: 1.2;
}

.dark__content {
  display: flex;
  gap: 40px;
  align-items: center;
}

.dark__img-box {
  flex: 1;
}

.dark__img {
  width: 100%;
  border-radius: 4px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.dark__legend {
  flex: 1;
  color: #e5f0ff;
}

.dark__legend-title {
  margin-bottom: 20px;
  font-size: 16px;
}

.dark__list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dark__item {
  display: flex;
  gap: 10px;
}

/* --- Systems Section --- */
.systems {
  margin-bottom: 22px;
}

.systems__title {
  color: #fff;
  text-align: center;
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 30px;
}

.systems__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.systems__col {
  display: flex;
  flex-direction: column;
  gap: 18px;
  height: 100%;
}

.systems__item {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.systems__item--left {
  height: 100%;
}

.systems__item--left .sysCard {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.systems__item--left .sysCard img {
  flex: 1;
  object-fit: contain;
}

.systems__itemTitle {
  color: #fff;
  text-align: center;
  font-size: 16px;
  font-weight: 600;
}

/* Zoom & Lightbox */
.zoom-wrap {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.zoom-mask {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  cursor: pointer;
  z-index: 10;
}

.zoom-wrap:hover .zoom-mask {
  opacity: 1;
}

.zoom-icon {
  display: block;
  object-fit: contain;
}

.charts .zoom-icon {
  width: 26px;
  height: 26px;
}

.compare .zoom-icon {
  width: 40px;
  height: 40px;
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox__img {
  max-width: 90vw;
  max-height: 90vh;
  transform: scale(1.5); /* 1.5x magnification as requested */
  transition: transform 0.3s ease;
  object-fit: contain;
}

.sysCard {
  background: #ffffff;
  border-radius: 4px;
  padding: 20px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.sysCard--img {
  padding: 0;
  background: #000;
  display: flex;
  flex: 1;
}

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

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

.chart svg {
  width: 100%;
  height: 100%;
}

.legal {
  margin-top: 60px;
  padding: 0 24px 40px;
}

.legal__title {
  color: #fff;
  text-align: center;
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.legal__intro {
  color: #fff;
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 30px;
  text-align: left;
}

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

.legal__item {
  margin-bottom: 30px;
  font-size: 16px;
  line-height: 1.6;
  color: #fff;
}

.legal__item-title {
  color: #fff;
}

.legal__ref {
  display: block;
  margin-top: 8px;
  color: #f2c94c;
  text-decoration: underline;
  font-weight: 600;
  cursor: pointer;
}

.legal__ref:hover {
  text-decoration: none;
}