*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --navy: #0A1B2A;
  --navy-2: #14304A;
  --orange: #FF6B35;
  --orange-light: #FF9A76;
  --cyan: #00E5FF;
  --cyan-light: #80F2FF;
  --mist: #F8FAFC;
  --line: #E2E8F0;
  --ink: #040A10;
  --green: #10B981;
  --font-head: 'Anton', 'Arial Black', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'Courier New', 'SimSun', monospace;
  --radius: 10px;
  --shadow-lg: 0 14px 40px rgba(4, 10, 16, .5);
  --header-h: 84px;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--mist);
  background:
    radial-gradient(circle at 88% 10%, rgba(0, 229, 255, .08), transparent 30%),
    radial-gradient(circle at 6% 90%, rgba(255, 107, 53, .07), transparent 32%),
    var(--navy);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: .02em;
  color: var(--mist);
  text-transform: uppercase;
}

p {
  color: var(--line);
}

a {
  color: var(--cyan);
}

a:hover {
  color: var(--cyan-light);
}

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

ul, ol {
  list-style: none;
}

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

::selection {
  background: var(--orange);
  color: var(--ink);
}

main {
  min-height: 60vh;
}

#main-content {
  scroll-margin-top: calc(var(--header-h) + 12px);
}

.container {
  width: min(1240px, 92vw);
  margin-inline: auto;
}

.section {
  position: relative;
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.section-tight {
  position: relative;
  padding: clamp(2rem, 4vw, 3rem) 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

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

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.page-title {
  font-size: clamp(2.1rem, 6vw, 4rem);
  text-transform: uppercase;
  letter-spacing: .015em;
  line-height: 1.02;
  margin-bottom: 1rem;
}

.lead-text {
  font-size: 1.06rem;
  line-height: 1.8;
  color: var(--line);
  max-width: 62ch;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: .55em;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: .9rem;
}

.section-label::before {
  content: "//";
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  font-family: var(--font-head);
  font-size: .85rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: .7em 1.35em;
  border-radius: 4px;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.btn-primary {
  background: var(--orange);
  color: var(--ink);
}

.btn-primary:hover {
  background: var(--orange-light);
  color: var(--ink);
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(255, 107, 53, .35);
}

.btn-ghost {
  background: transparent;
  color: var(--cyan);
  border: 1px solid rgba(0, 229, 255, .5);
}

.btn-ghost:hover {
  background: rgba(0, 229, 255, .08);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(0, 229, 255, .14);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35em;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: rgba(226, 232, 240, .78);
  padding: 1rem 0 0;
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: .55em;
  color: rgba(0, 229, 255, .65);
}

.breadcrumbs a {
  color: var(--cyan);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--cyan-light);
  text-decoration: underline;
}

.breadcrumbs [aria-current="page"] {
  color: var(--orange);
}

.media-frame {
  position: relative;
  overflow: hidden;
  display: block;
  aspect-ratio: var(--media-ratio, 16/10);
  background:
    radial-gradient(circle at 74% 20%, rgba(0, 229, 255, .2), transparent 44%),
    linear-gradient(140deg, var(--navy-2), var(--navy));
  border: 1px solid rgba(0, 229, 255, .18);
  border-radius: var(--radius);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(115deg, transparent 32%, rgba(0, 229, 255, .1) 46%, transparent 60%),
    repeating-linear-gradient(0deg, rgba(248, 250, 252, .05) 0 1px, transparent 1px 10px);
}

.media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.08) saturate(1.06);
}

.data-card {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(150deg, rgba(20, 48, 74, .95), rgba(10, 27, 42, .95));
  border: 1px solid rgba(0, 229, 255, .18);
  border-radius: var(--radius);
  padding: 1.3rem;
}

.data-card::before {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  width: 5px;
  background: linear-gradient(180deg, var(--cyan), transparent 70%);
}

.data-card-title {
  font-size: 1rem;
  letter-spacing: .06em;
  margin-bottom: .5rem;
}

.data-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--cyan);
}

.data-sign {
  color: var(--orange);
  font-size: .9em;
  margin-left: .1em;
}

.data-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .45rem 0;
  border-bottom: 1px dashed rgba(0, 229, 255, .16);
}

.data-row:last-child {
  border-bottom: 0;
}

.data-row-label {
  font-size: .88rem;
  color: var(--line);
}

.data-row-value {
  font-family: var(--font-mono);
  font-size: .9rem;
  color: var(--mist);
  font-weight: 700;
}

.data-bar-track {
  height: 8px;
  border-radius: 999px;
  background: rgba(248, 250, 252, .1);
  overflow: hidden;
}

.data-bar-fill {
  height: 100%;
  width: var(--bar, 55%);
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  border-radius: 999px;
}

.tag-chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--cyan);
  border: 1px solid rgba(0, 229, 255, .4);
  border-radius: 999px;
  padding: .28em .8em;
}

.tag-chip.tag-hot {
  color: var(--orange);
  border-color: rgba(255, 107, 53, .45);
}

.tag-chip.tag-live {
  color: var(--green);
  border-color: rgba(16, 185, 129, .45);
}

.tag-chip.tag-live::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  margin-right: .4em;
  vertical-align: 1px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1200;
  background: linear-gradient(180deg, rgba(10, 27, 42, .98), rgba(10, 27, 42, .96) 72%, rgba(20, 48, 74, .96));
  border-bottom: 1px solid rgba(0, 229, 255, .32);
  box-shadow: var(--shadow-lg);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 2200;
  transform: translateY(-320%);
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-head);
  font-size: .85rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: .65em 1.3em;
  border-radius: 4px;
  transition: transform .25s ease;
}

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

.page-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--orange) 70%, var(--orange-light));
  z-index: 5;
}

.header-inner {
  position: relative;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: clamp(.8rem, 1.6vw, 1.4rem);
}

.site-brand {
  display: inline-flex;
  align-items: baseline;
  gap: .45rem;
  text-decoration: none;
  color: var(--mist);
  flex-shrink: 0;
}

.site-brand:hover {
  color: var(--mist);
}

.brand-mark {
  font-family: var(--font-head);
  font-size: 2rem;
  line-height: 1;
  color: var(--mist);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--cyan);
}

.brand-sub::before {
  content: "//";
  color: var(--orange);
  font-weight: 700;
  margin-right: .15em;
}

.header-tip {
  display: none;
  align-items: center;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: rgba(226, 232, 240, .55);
  border-left: 1px solid rgba(0, 229, 255, .25);
  padding: .2em 0 .2em .8rem;
  white-space: nowrap;
}

.header-tip::before {
  content: "";
  width: 11px;
  height: 11px;
  flex: none;
  border: 1.5px solid var(--cyan);
  border-radius: 50%;
  margin-right: .55em;
}

@media (min-width: 1081px) {
  .header-tip {
    display: inline-flex;
  }
}

.site-nav {
  display: flex;
  align-items: center;
  margin-inline: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(.3rem, 1.2vw, 1rem);
  counter-reset: navIndex;
}

.nav-item {
  margin: 0;
  padding: 0;
}

.nav-link {
  position: relative;
  display: inline-block;
  font-family: var(--font-head);
  font-size: .86rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--mist);
  text-decoration: none;
  padding: .45em .15em;
}

.nav-link::before {
  counter-increment: navIndex;
  content: "0" counter(navIndex);
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: .72em;
  letter-spacing: 0;
  color: var(--cyan);
  margin-right: .45em;
  vertical-align: .2em;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}

.nav-link:hover {
  color: var(--cyan-light);
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-link[aria-current="page"] {
  color: var(--orange);
}

.nav-link[aria-current="page"]::before {
  color: var(--orange);
}

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.member-btn {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  font-family: var(--font-head);
  font-size: .8rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--ink);
  text-decoration: none;
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  padding: .6em 1em;
  transform: skewX(-6deg);
  box-shadow: 0 4px 16px rgba(255, 107, 53, .28);
  transition: transform .18s ease, box-shadow .18s ease;
}

.member-btn::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
}

.member-btn:hover {
  color: var(--ink);
  transform: skewX(-6deg) translateY(-2px);
  box-shadow: 0 9px 26px rgba(255, 107, 53, .45);
}

.nav-drawer-cta {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  flex: none;
  border: 1px solid rgba(0, 229, 255, .4);
  border-radius: 6px;
  transition: border-color .2s ease;
}

.nav-toggle:hover {
  border-color: var(--cyan);
}

.toggle-bar {
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform .25s ease, opacity .2s ease;
}

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

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

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

.site-footer {
  position: relative;
  overflow: hidden;
  color: var(--line);
  background: linear-gradient(180deg, var(--navy) 0%, var(--ink) 100%);
  border-top: 1px solid rgba(0, 229, 255, .28);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 229, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, .05) 1px, transparent 1px);
  background-size: 44px 44px;
}

.footer-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 2.8rem;
}

.footer-brand,
.footer-nav,
.footer-policy,
.footer-contact {
  min-width: 0;
}

.footer-logo {
  font-family: var(--font-head);
  font-size: 2rem;
  text-decoration: none;
  color: var(--mist);
  line-height: 1;
}

.footer-logo:hover {
  color: var(--mist);
}

.footer-logo-cn {
  color: var(--cyan);
}

.footer-about {
  margin-top: .9rem;
  max-width: 36ch;
  font-size: .92rem;
  line-height: 1.75;
}

.footer-note {
  margin-top: 1.2rem;
  max-width: 46ch;
  font-size: .8rem;
  line-height: 1.7;
  color: rgba(226, 232, 240, .7);
  border-left: 3px solid var(--orange);
  padding-left: .8rem;
}

.footer-title {
  font-size: .92rem;
  letter-spacing: .14em;
  margin-bottom: 1.1rem;
  padding-bottom: .45rem;
  position: relative;
  color: var(--mist);
}

.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: linear-gradient(90deg, var(--orange), var(--cyan));
}

.footer-list {
  display: grid;
  gap: .55rem;
}

.footer-list a {
  color: var(--line);
  text-decoration: none;
  font-size: .92rem;
  transition: color .2s ease, padding-left .2s ease;
}

.footer-list a:hover {
  color: var(--cyan);
  padding-left: 4px;
}

.contact-line {
  font-size: .86rem;
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.contact-label {
  display: block;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: .1em;
}

.footer-bottom {
  position: relative;
  border-top: 1px solid rgba(0, 229, 255, .14);
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .9rem;
  padding: 1.2rem 0;
}

.footer-icp,
.footer-copy {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: rgba(226, 232, 240, .72);
}

.footer-icp a {
  color: var(--cyan);
  text-decoration: none;
}

.top-btn {
  display: inline-flex;
  align-items: center;
  gap: .45em;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--cyan);
  border: 1px solid rgba(0, 229, 255, .4);
  border-radius: 4px;
  padding: .5em .9em;
  transition: background .2s ease, color .2s ease;
}

.top-btn:hover {
  background: var(--cyan);
  color: var(--ink);
}

.footer-strip {
  height: 5px;
  background: linear-gradient(90deg, var(--orange), var(--orange-light) 32%, var(--cyan) 68%, var(--cyan-light));
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .55s cubic-bezier(.22, .61, .36, 1), transform .55s cubic-bezier(.22, .61, .36, 1);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-delay="1"] {
  transition-delay: .08s;
}

[data-reveal-delay="2"] {
  transition-delay: .16s;
}

[data-reveal-delay="3"] {
  transition-delay: .24s;
}

[data-reveal-delay="4"] {
  transition-delay: .32s;
}

[data-reveal-delay="5"] {
  transition-delay: .4s;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 3px;
}

body.nav-open {
  overflow: hidden;
}

@media (max-width: 1080px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1190;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 0;
    margin: 0;
    padding: calc(var(--header-h) + 3.5rem) 1.5rem 2.5rem;
    background:
      radial-gradient(circle at 18% 12%, rgba(255, 107, 53, .14), transparent 42%),
      linear-gradient(160deg, rgba(20, 48, 74, .98), rgba(10, 27, 42, .99));
    transform: translateY(-102%);
    transition: transform .32s cubic-bezier(.22, .61, .36, 1);
    overflow-y: auto;
  }

  .site-nav[data-open] {
    transform: translateY(0);
    box-shadow: 0 20px 60px rgba(4, 10, 16, .6);
  }

  .nav-list {
    flex-direction: column;
    align-items: center;
    gap: 1.1rem;
    text-align: center;
  }

  .nav-link {
    font-size: clamp(1.25rem, 4.6vw, 1.7rem);
    padding: .15em .5em;
  }

  .nav-link::before {
    display: block;
    margin: 0 0 .08em;
    font-size: .5em;
    text-align: center;
  }

  .nav-drawer-cta {
    display: inline-flex;
    margin-top: auto;
  }
}

@media (max-width: 900px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 600px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-bottom-inner {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .brand-mark {
    font-size: 1.55rem;
  }

  .brand-sub {
    font-size: .78rem;
  }

  .member-btn {
    font-size: .7rem;
    padding: .5em .7em;
  }

  .page-progress {
    height: 2px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }

  [data-reveal],
  [data-reveal].is-revealed {
    opacity: 1 !important;
    transform: none !important;
  }
}