:root {
  --spk-night: #06141f;
  --spk-deep: #0c2433;
  --spk-panel: rgba(14, 42, 58, 0.72);
  --spk-foam: #eefaf5;
  --spk-mint: #3dffc0;
  --spk-cyan: #57d6ff;
  --spk-rose: #ff5d8f;
  --spk-amber: #ffc857;
  --spk-line: rgba(255, 255, 255, 0.12);
  --spk-soft: rgba(238, 250, 245, 0.78);
  --spk-max: 1080px;
  --spk-font-display: "ZCOOL QingKe HuangYou", "Noto Serif SC", serif;
  --spk-font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--spk-foam);
  font-family: var(--spk-font-body);
  font-size: 16px;
  line-height: 1.75;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(61, 255, 192, 0.18), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(87, 214, 255, 0.16), transparent 50%),
    radial-gradient(800px 500px at 70% 40%, rgba(255, 93, 143, 0.1), transparent 55%),
    linear-gradient(180deg, #071824 0%, #0a1c2a 40%, #081621 100%);
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--spk-cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--spk-mint);
}

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

.spk-wrap {
  width: min(100% - 2rem, var(--spk-max));
  margin-inline: auto;
}

.spk-promo {
  position: relative;
  z-index: 40;
  background: rgba(5, 16, 24, 0.92);
  border-bottom: 1px solid var(--spk-line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 0.7rem 0;
}

.spk-promo-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem 0.85rem;
}

.spk-promo-tile {
  width: 70px;
  text-decoration: none;
  color: var(--spk-soft);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.spk-promo-tile img {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  object-fit: cover;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.28);
  transition: transform 0.2s ease;
}

.spk-promo-tile:hover img {
  transform: translateY(-3px) scale(1.04);
}

.spk-promo-tile b {
  font-size: 11px;
  font-weight: 500;
  max-width: 70px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.spk-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 20, 31, 0.82);
  border-bottom: 1px solid var(--spk-line);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.spk-topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 1rem;
}

.spk-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--spk-foam);
}

.spk-brand img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  box-shadow: 0 0 0 2px rgba(61, 255, 192, 0.35);
}

.spk-brand span {
  font-family: var(--spk-font-display);
  font-size: 1.45rem;
  letter-spacing: 0.04em;
}

.spk-menu-btn {
  width: 42px;
  height: 42px;
  border: 1px solid var(--spk-line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  display: grid;
  place-items: center;
  gap: 5px;
  cursor: pointer;
}

.spk-menu-btn i {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--spk-foam);
  transition: 0.2s ease;
}

.spk-menu-btn.is-on i:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.spk-menu-btn.is-on i:nth-child(2) {
  opacity: 0;
}

.spk-menu-btn.is-on i:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.spk-menu-panel {
  display: none;
  border-top: 1px solid var(--spk-line);
  background: rgba(7, 22, 33, 0.96);
  padding: 0.8rem 0 1rem;
}

.spk-menu-panel.is-open {
  display: block;
}

.spk-menu-panel a {
  display: block;
  padding: 0.7rem 0;
  color: var(--spk-foam);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.98rem;
}

.spk-nav-desk {
  display: none;
  gap: 1.25rem;
}

.spk-nav-desk a {
  color: var(--spk-soft);
  text-decoration: none;
  font-size: 0.95rem;
}

.spk-nav-desk a:hover {
  color: var(--spk-mint);
}

.spk-dl-rail {
  position: sticky;
  top: 64px;
  z-index: 45;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition: max-height 0.28s ease, opacity 0.28s ease, padding 0.28s ease;
  background: rgba(8, 28, 40, 0.94);
  border-bottom: 1px solid var(--spk-line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.spk-dl-rail.is-show {
  max-height: 220px;
  opacity: 1;
  pointer-events: auto;
  padding: 0.55rem 0;
}

body.spk-rail-live {
  scroll-padding-top: 180px;
}

.spk-dl-rail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
}

.spk-rail-chip {
  text-decoration: none;
  color: var(--spk-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  font-size: 11px;
}

.spk-rail-chip img {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  object-fit: cover;
}

.spk-rail-chip span {
  max-width: 64px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.spk-hero {
  position: relative;
  min-height: 88vh;
  display: grid;
  align-items: end;
  padding: 3.5rem 0 4rem;
  overflow: hidden;
}

.spk-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(6, 20, 31, 0.15) 0%, rgba(6, 20, 31, 0.55) 45%, rgba(6, 20, 31, 0.92) 100%),
    url("panel-comic-serial.jpg") center / cover no-repeat;
  z-index: 0;
  transform: scale(1.04);
  animation: spk-drift 18s ease-in-out infinite alternate;
}

.spk-hero::after {
  content: "";
  position: absolute;
  inset: auto -20% -30% 20%;
  height: 55%;
  background: radial-gradient(circle, rgba(61, 255, 192, 0.25), transparent 65%);
  filter: blur(30px);
  z-index: 1;
  pointer-events: none;
}

.spk-hero-copy {
  position: relative;
  z-index: 2;
  max-width: 36rem;
}

.spk-hero-brand {
  margin: 0 0 0.8rem;
  font-family: var(--spk-font-display);
  font-size: clamp(2.8rem, 12vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: 0.06em;
  background: linear-gradient(120deg, #fff 10%, var(--spk-mint) 45%, var(--spk-cyan) 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 10px 40px rgba(61, 255, 192, 0.15);
  animation: spk-glow 3.6s ease-in-out infinite;
}

.spk-hero h1 {
  margin: 0 0 0.9rem;
  font-size: clamp(1.25rem, 4.4vw, 1.75rem);
  font-weight: 700;
  line-height: 1.4;
}

.spk-hero p {
  margin: 0 0 1.4rem;
  color: var(--spk-soft);
  font-size: 1rem;
}

.spk-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.spk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.65rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.spk-btn-ghost {
  color: var(--spk-foam);
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.06);
}

.spk-btn-soft {
  color: var(--spk-night);
  background: linear-gradient(120deg, var(--spk-mint), var(--spk-cyan));
  box-shadow: 0 10px 28px rgba(61, 255, 192, 0.25);
}

.spk-crumb {
  padding: 1rem 0 0.2rem;
  font-size: 0.88rem;
  color: var(--spk-soft);
}

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

.spk-crumb span {
  opacity: 0.7;
}

.spk-section {
  padding: 2.6rem 0;
  position: relative;
}

.spk-section h2 {
  margin: 0 0 0.9rem;
  font-family: var(--spk-font-display);
  font-size: clamp(1.55rem, 5vw, 2rem);
  line-height: 1.25;
  letter-spacing: 0.03em;
}

.spk-section h3 {
  margin: 1.4rem 0 0.55rem;
  font-size: 1.15rem;
  color: var(--spk-mint);
}

.spk-section p {
  margin: 0 0 1rem;
  color: var(--spk-soft);
}

.spk-lead {
  font-size: 1.05rem;
  color: #d7f6ea;
}

.spk-split {
  display: grid;
  gap: 1.4rem;
  align-items: center;
}

.spk-split figure {
  margin: 0;
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid var(--spk-line);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}

.spk-split figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(61, 255, 192, 0.12), transparent 45%);
  pointer-events: none;
}

.spk-split img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
}

.spk-mosaic {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

.spk-tile {
  background: var(--spk-panel);
  border: 1px solid var(--spk-line);
  border-radius: 20px;
  padding: 1.15rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.spk-tile h3 {
  margin-top: 0;
}

.spk-tile img {
  width: 100%;
  border-radius: 14px;
  margin-bottom: 0.85rem;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
}

.spk-ribbon {
  display: grid;
  gap: 1rem;
}

.spk-ribbon-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 0.9rem;
  align-items: start;
  padding: 1rem;
  border-radius: 18px;
  background: linear-gradient(120deg, rgba(87, 214, 255, 0.08), rgba(255, 93, 143, 0.06));
  border: 1px solid var(--spk-line);
}

.spk-ribbon-item img {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  object-fit: cover;
}

.spk-ribbon-item h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.spk-ribbon-item p {
  margin: 0;
  font-size: 0.95rem;
}

.spk-wave {
  position: relative;
  padding: 2.8rem 0;
  background:
    linear-gradient(180deg, transparent, rgba(61, 255, 192, 0.05) 30%, rgba(87, 214, 255, 0.05) 70%, transparent);
}

.spk-quote {
  margin: 1.5rem 0;
  padding: 1.2rem 1.2rem 1.2rem 1.3rem;
  border-left: 3px solid var(--spk-rose);
  background: rgba(255, 93, 143, 0.08);
  border-radius: 0 16px 16px 0;
  color: #ffe4ee;
}

.spk-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.spk-legal {
  padding: 1.5rem 0 3rem;
}

.spk-legal article {
  background: rgba(10, 30, 42, 0.65);
  border: 1px solid var(--spk-line);
  border-radius: 22px;
  padding: 1.4rem 1.2rem 1.8rem;
  backdrop-filter: blur(10px);
}

.spk-legal h1 {
  margin: 0 0 1rem;
  font-family: var(--spk-font-display);
  font-size: clamp(1.6rem, 5vw, 2.1rem);
}

.spk-legal h2 {
  margin: 1.6rem 0 0.6rem;
  font-size: 1.2rem;
  color: var(--spk-mint);
}

.spk-legal p,
.spk-legal li {
  color: var(--spk-soft);
}

.spk-legal ul {
  padding-left: 1.2rem;
}

.spk-error {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 0;
}

.spk-error strong {
  display: block;
  font-family: var(--spk-font-display);
  font-size: clamp(4rem, 18vw, 7rem);
  line-height: 1;
  background: linear-gradient(120deg, var(--spk-rose), var(--spk-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.spk-error h1 {
  margin: 0.6rem 0 0.8rem;
  font-size: 1.4rem;
}

.spk-footer {
  margin-top: 2rem;
  padding: 2.2rem 0 6.5rem;
  border-top: 1px solid var(--spk-line);
  background: rgba(4, 14, 22, 0.8);
}

.spk-footer-grid {
  display: grid;
  gap: 1.4rem;
}

.spk-footer h2 {
  margin: 0 0 0.6rem;
  font-family: var(--spk-font-display);
  font-size: 1.3rem;
}

.spk-footer p,
.spk-footer a {
  color: var(--spk-soft);
  text-decoration: none;
}

.spk-footer nav {
  display: grid;
  gap: 0.45rem;
}

.spk-copy {
  margin-top: 1.4rem;
  font-size: 0.85rem;
  opacity: 0.7;
}

.spk-rise {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.spk-rise.is-in {
  opacity: 1;
  transform: none;
}

@keyframes spk-drift {
  from {
    transform: scale(1.04) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.08) translate3d(-1.5%, 1%, 0);
  }
}

@keyframes spk-glow {
  0%,
  100% {
    filter: drop-shadow(0 0 0 rgba(61, 255, 192, 0));
  }
  50% {
    filter: drop-shadow(0 0 18px rgba(61, 255, 192, 0.28));
  }
}

@media (min-width: 768px) {
  .spk-menu-btn {
    display: none;
  }

  .spk-nav-desk {
    display: flex;
  }

  .spk-menu-panel {
    display: none !important;
  }

  .spk-dl-rail-grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }

  .spk-split {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 2rem;
  }

  .spk-split.is-flip {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .spk-split.is-flip figure {
    order: 2;
  }

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

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

  .spk-footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }

  .spk-hero {
    align-items: center;
    min-height: 78vh;
  }
}

@media (min-width: 1024px) {
  .spk-split img {
    aspect-ratio: 10 / 16;
  }
}