/* ===== 设计令牌 ===== */
:root {
  --primary-deep-blue: #0A1633;
  --ocean-blue: #123A66;
  --neon-green: #00E5A0;
  --moss-green: #4A7C59;
  --orange-accents: #FF7A3D;
  --terracotta: #C4552D;
  --rock-gray: #6B7280;
  --rice-white: #F5F1E8;
  --deep-ink: #070F24;
  --text-muted: #8B9BB4;
  --line-faint: rgba(245, 241, 232, 0.1);
  --line-green: rgba(0, 229, 160, 0.28);
  --font-display: 'Archivo Black', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --header-height: 78px;
  --radius-lg: 22px;
  --radius-md: 14px;
  --shadow-card: 0 18px 44px rgba(5, 10, 30, 0.18);
}

/* ===== Reset 与基础 ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--primary-deep-blue);
  color: var(--rice-white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--neon-green);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-family: var(--font-display);
  color: inherit;
}

p {
  margin: 0;
}

::selection {
  background: var(--neon-green);
  color: var(--primary-deep-blue);
}

:focus-visible {
  outline: 2px solid var(--neon-green);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ===== 布局容器 ===== */
.container {
  width: min(1200px, calc(100% - 40px));
  margin-inline: auto;
}

.site-main {
  padding-top: var(--header-height);
}

.site-main--flush {
  padding-top: 0;
}

.section {
  padding: 88px 0;
  position: relative;
}

.section--tint {
  background: linear-gradient(180deg, var(--ocean-blue) 0%, var(--primary-deep-blue) 55%);
  border-top: 1px solid var(--line-faint);
  border-bottom: 1px solid var(--line-faint);
}

.section--surface {
  background: var(--rice-white);
  color: var(--primary-deep-blue);
}

.content-surface {
  background: var(--rice-white);
  color: var(--primary-deep-blue);
}

.content-surface .section-lead {
  color: var(--rock-gray);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

/* ===== 标题系统 ===== */
.display-title {
  font-family: var(--font-display);
  font-size: clamp(2.9rem, 7vw, 4.6rem);
  font-weight: 900;
  line-height: 0.96;
  letter-spacing: -0.02em;
  margin: 0;
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.015em;
  margin: 0;
}

.section-head {
  max-width: 680px;
  margin-bottom: 48px;
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--neon-green);
}

.section-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}

.section-kicker--orange {
  color: var(--orange-accents);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0;
}

.section-lead {
  font-size: 16.5px;
  color: rgba(245, 241, 232, 0.68);
  margin: 16px 0 0;
}

.section--surface .section-title,
.content-surface .section-title {
  color: var(--primary-deep-blue);
}

.section--surface .section-lead,
.content-surface .section-lead {
  color: var(--rock-gray);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  color: var(--rice-white);
  background: transparent;
  cursor: pointer;
  transition: transform 0.22s ease, background 0.22s ease, border-color 0.22s ease, color 0.22s ease, box-shadow 0.22s ease;
}

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

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--neon-green);
  color: var(--primary-deep-blue);
  box-shadow: 0 10px 26px rgba(0, 229, 160, 0.18);
}

.btn--primary:hover {
  box-shadow: 0 0 0 5px rgba(0, 229, 160, 0.16), 0 14px 30px rgba(0, 229, 160, 0.28);
}

.btn--outline {
  border-color: rgba(245, 241, 232, 0.35);
  color: var(--rice-white);
}

.btn--outline:hover {
  border-color: var(--neon-green);
  color: var(--neon-green);
}

.btn--orange {
  background: var(--orange-accents);
  color: var(--primary-deep-blue);
}

.btn--orange:hover {
  box-shadow: 0 0 0 5px rgba(255, 122, 61, 0.18), 0 14px 30px rgba(255, 122, 61, 0.22);
}

.btn--sm {
  padding: 9px 16px;
  font-size: 13.5px;
}

/* ===== 标签 ===== */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(0, 229, 160, 0.1);
  border: 1px solid rgba(0, 229, 160, 0.3);
  color: var(--neon-green);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1;
}

.pill--orange {
  background: rgba(255, 122, 61, 0.12);
  border-color: rgba(255, 122, 61, 0.34);
  color: var(--orange-accents);
}

.pill--dark {
  background: rgba(10, 22, 51, 0.6);
  border-color: rgba(245, 241, 232, 0.16);
  color: var(--rice-white);
}

/* ===== 顶部悬浮导航 ===== */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  background: var(--neon-green);
  color: var(--primary-deep-blue);
  font-weight: 700;
  padding: 10px 18px;
  border-radius: 999px;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 0.2s ease;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  padding: 12px 20px 0;
  pointer-events: none;
}

.site-header__inner {
  position: relative;
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 8px 10px 8px 18px;
  border-radius: 999px;
  border: 1px solid rgba(0, 229, 160, 0.24);
  background: rgba(10, 22, 51, 0.84);
  box-shadow: 0 18px 46px rgba(2, 8, 24, 0.5);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  pointer-events: auto;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--rice-white);
  text-decoration: none;
}

.site-brand__mark {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: 11px;
  overflow: hidden;
  border: 1px solid rgba(0, 229, 160, 0.5);
  background: var(--ocean-blue);
}

.site-brand__mark::before {
  content: "";
  position: absolute;
  left: 6px;
  bottom: 6px;
  width: 7px;
  height: 14px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--neon-green) 0 62%, rgba(0, 229, 160, 0.22) 62%);
  box-shadow: 13px -7px 0 -1.5px var(--orange-accents), 26px -2px 0 -1.5px var(--rice-white);
}

.site-brand__text {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: 0.02em;
  color: var(--rice-white);
}

.site-brand__text strong {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--neon-green);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  padding: 9px 14px;
  border-radius: 999px;
  color: rgba(245, 241, 232, 0.78);
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  text-decoration: none;
  transition: background 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

.site-nav__link:hover {
  background: rgba(255, 255, 255, 0.07);
  color: var(--rice-white);
}

.site-nav__link[aria-current="page"] {
  background: var(--neon-green);
  color: var(--primary-deep-blue);
}

.site-nav__link--cta {
  margin-left: 6px;
  border: 1px solid rgba(255, 122, 61, 0.6);
  color: var(--orange-accents);
}

.site-nav__link--cta:hover {
  border-color: var(--orange-accents);
  background: rgba(255, 122, 61, 0.12);
  color: var(--orange-accents);
}

.site-nav__link--cta[aria-current="page"] {
  border-color: var(--orange-accents);
  background: var(--orange-accents);
  color: var(--primary-deep-blue);
}

.site-nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 0;
  border-radius: 50%;
  border: 1px solid rgba(245, 241, 232, 0.18);
  background: rgba(255, 255, 255, 0.04);
  color: var(--rice-white);
  cursor: pointer;
}

.site-nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  margin: 3px 0;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

/* ===== 滚动进度 ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 130;
  width: 100%;
  height: 3px;
  pointer-events: none;
  background: rgba(0, 229, 160, 0.08);
}

.scroll-progress::after {
  content: "";
  display: block;
  width: var(--scroll-progress, 0%);
  height: 100%;
  border-radius: 0 2px 2px 0;
  background: linear-gradient(90deg, var(--neon-green), var(--orange-accents));
  transition: width 0.08s linear;
}

/* ===== 页脚 ===== */
.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--deep-ink);
  color: var(--text-muted);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-green) 0 30%, var(--ocean-blue) 30% 50%, var(--orange-accents) 50% 64%, transparent 64%);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 2.1fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 44px;
  padding: 72px 0 48px;
}

.site-footer__trust {
  max-width: 360px;
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: #7C8BA6;
}

.site-brand--footer .site-brand__text {
  font-size: 20px;
}

.site-footer__heading {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rice-white);
}

.site-footer__heading::after {
  content: "";
  height: 1px;
  max-width: 44px;
  flex: 1;
  background: var(--line-green);
}

.site-footer__col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}

.site-footer__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 5px 0;
  position: relative;
  font-size: 14.5px;
  color: #A6B3CB;
  text-decoration: none;
  transition: color 0.2s ease, transform 0.2s ease;
}

.site-footer__link::before {
  content: "";
  width: 5px;
  height: 5px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--neon-green);
  opacity: 0.55;
  transition: opacity 0.2s, transform 0.2s;
}

.site-footer__link:hover {
  color: var(--neon-green);
  transform: translateX(3px);
}

.site-footer__link:hover::before {
  opacity: 1;
  transform: scale(1.25);
}

.site-footer__link--highlight {
  color: var(--orange-accents);
}

.site-footer__link--highlight::before {
  background: var(--orange-accents);
}

.site-footer__info {
  margin: 4px 0;
  font-size: 14px;
  line-height: 1.7;
  color: #A6B3CB;
}

.site-footer__bottom {
  border-top: 1px solid rgba(245, 241, 232, 0.07);
  padding: 20px 0;
}

.site-footer__bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.site-footer__copyright,
.site-footer__icp {
  margin: 0;
  font-size: 13px;
  color: #7C8BA6;
}

.site-footer__icp {
  letter-spacing: 0.02em;
}

/* ===== 数据组件 ===== */
.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.data-card {
  padding: 26px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.045);
  transition: transform 0.26s ease, border-color 0.26s ease, box-shadow 0.26s ease, background 0.26s ease;
}

.data-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 160, 0.55);
  background: rgba(0, 229, 160, 0.045);
  box-shadow: var(--shadow-card);
}

.data-card__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  color: var(--rice-white);
}

.data-card--surface {
  background: #FFFFFF;
  border-color: #E3E6EC;
  color: var(--primary-deep-blue);
}

.data-card--surface:hover {
  border-color: var(--neon-green);
  box-shadow: 0 18px 44px rgba(10, 22, 51, 0.1);
}

.data-card--surface .data-card__title {
  color: var(--primary-deep-blue);
}

.stat__number {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.3rem);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  letter-spacing: -0.02em;
  color: var(--neon-green);
}

.stat__number--orange {
  color: var(--orange-accents);
}

.stat__number--white {
  color: var(--rice-white);
}

.stat__label {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: rgba(245, 241, 232, 0.65);
}

.data-card--surface .stat__label {
  color: var(--rock-gray);
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  height: 180px;
  padding: 28px 8px 8px;
}

.chart-bars__bar {
  position: relative;
  height: var(--bar, 40%);
  min-height: 5%;
  flex: 1;
  border-radius: 8px 8px 4px 4px;
  background: linear-gradient(180deg, rgba(0, 229, 160, 0.95) 0%, rgba(0, 229, 160, 0.22) 100%);
  transition: height 0.35s cubic-bezier(0.2, 0.75, 0.2, 1), background 0.3s ease;
}

.chart-bars__bar:nth-child(even) {
  background: linear-gradient(180deg, rgba(255, 122, 61, 0.95) 0%, rgba(255, 122, 61, 0.18) 100%);
}

.chart-bars__bar::after {
  content: attr(data-label);
  position: absolute;
  top: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  white-space: nowrap;
  color: rgba(245, 241, 232, 0.6);
}

/* ===== 面包屑 ===== */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 26px;
  font-size: 13px;
  color: rgba(245, 241, 232, 0.5);
}

.breadcrumbs__link {
  color: rgba(245, 241, 232, 0.6);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumbs__link:hover {
  color: var(--neon-green);
}

.breadcrumbs__sep {
  color: rgba(245, 241, 232, 0.28);
}

.breadcrumbs__current {
  font-weight: 600;
  color: var(--rice-white);
}

/* ===== 正文排版 ===== */
.prose {
  max-width: 760px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(245, 241, 232, 0.82);
}

.prose > * + * {
  margin-top: 1em;
}

.prose h2 {
  margin-top: 2em;
  font-family: var(--font-display);
  font-size: 26px;
  line-height: 1.3;
  color: var(--rice-white);
}

.prose h3 {
  margin-top: 1.6em;
  font-size: 19px;
  color: var(--rice-white);
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 4px;
  color: var(--neon-green);
}

.prose a:hover {
  color: var(--orange-accents);
}

.prose ul {
  padding-left: 1.3em;
}

.prose li {
  margin: 0.4em 0;
}

.prose blockquote {
  margin: 1.6em 0;
  padding: 14px 20px;
  border-left: 3px solid var(--neon-green);
  border-radius: 0 12px 12px 0;
  background: rgba(0, 229, 160, 0.06);
}

/* ===== 媒体占位 ===== */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: var(--media-ratio, 4 / 3);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background:
    radial-gradient(circle at 78% 20%, rgba(0, 229, 160, 0.16), transparent 42%),
    linear-gradient(135deg, var(--ocean-blue) 0%, var(--primary-deep-blue) 78%);
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 160, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 160, 0.12) 1px, transparent 1px);
  background-size: 36px 36px;
  -webkit-mask-image: radial-gradient(circle at 28% 28%, #000 0%, transparent 72%);
  mask-image: radial-gradient(circle at 28% 28%, #000 0%, transparent 72%);
}

.media-frame::after {
  content: "";
  position: absolute;
  right: -14px;
  bottom: 22px;
  width: 42%;
  height: 5px;
  border-radius: 6px 0 0 6px;
  transform: rotate(-7deg);
  opacity: 0.75;
  background: linear-gradient(90deg, transparent 0%, var(--orange-accents) 55%, var(--neon-green) 100%);
}

.media-frame--wide {
  aspect-ratio: 16 / 9;
}

.media-frame--tall {
  aspect-ratio: 3 / 4;
}

/* ===== 滚动显现 ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-reveal="left"] {
  transform: translateX(-26px);
}

[data-reveal="right"] {
  transform: translateX(26px);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
  .site-nav__link {
    padding: 9px 10px;
    font-size: 13.5px;
  }
}

@media (max-width: 880px) {
  .site-nav-toggle {
    display: inline-flex;
  }

  .site-header__inner {
    border-radius: 26px;
    padding-left: 14px;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px;
    border-radius: 24px;
    border: 1px solid rgba(0, 229, 160, 0.24);
    background: rgba(10, 22, 51, 0.97);
    box-shadow: 0 24px 52px rgba(2, 8, 24, 0.45);
  }

  .site-nav[data-open] {
    display: flex;
  }

  .site-nav__link {
    justify-content: space-between;
    padding: 13px 16px;
    border-radius: 16px;
  }

  .site-nav__link--cta {
    margin-left: 0;
    margin-top: 4px;
  }

  .site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
  }

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

  .site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg);
  }
}

@media (max-width: 1024px) {
  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .site-footer__brand-col {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .section {
    padding: 64px 0;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 560px) {
  .container {
    width: calc(100% - 28px);
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    padding: 56px 0 36px;
  }

  .site-footer__bottom .container {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== 减少动态效果 ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .scroll-progress::after {
    transition: none;
  }
}