@import url("https://fonts.googleapis.com/css2?family=ZCOOL+XiaoWei&family=Noto+Sans+SC:wght@400;500;700&display=swap");

:root {
  --bcf-ink: #152028;
  --bcf-ink-soft: #3a4a56;
  --bcf-teal: #1f9e96;
  --bcf-teal-deep: #0f6f6a;
  --bcf-coral: #ff5e4d;
  --bcf-coral-soft: #ff8a7a;
  --bcf-mist: #e8f4f2;
  --bcf-paper: #f4faf8;
  --bcf-glass: rgba(255, 255, 255, 0.62);
  --bcf-line: rgba(21, 32, 40, 0.1);
  --bcf-shadow: 0 18px 48px rgba(15, 48, 46, 0.12);
  --bcf-radius: 22px;
  --bcf-nav-h: 64px;
  --bcf-promo-gap: 12px;
  --bcf-max: 1120px;
  --bcf-font-display: "ZCOOL XiaoWei", "Songti SC", serif;
  --bcf-font-body: "Noto Sans SC", "PingFang SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--bcf-font-body);
  color: var(--bcf-ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(31, 158, 150, 0.18), transparent 60%),
    radial-gradient(900px 420px at 100% 0%, rgba(255, 94, 77, 0.14), transparent 55%),
    linear-gradient(180deg, #f7fcfb 0%, var(--bcf-paper) 40%, #eef6f4 100%);
  line-height: 1.75;
  min-height: 100vh;
}

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

a {
  color: var(--bcf-teal-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--bcf-coral);
}

.bcf-skip {
  position: absolute;
  left: -9999px;
}

.bcf-skip:focus {
  left: 12px;
  top: 12px;
  z-index: 1000;
  background: #fff;
  padding: 8px 12px;
}

.bcf-shell {
  width: min(100% - 32px, var(--bcf-max));
  margin-inline: auto;
}

/* Top promo rail */
.bcf-promo {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--bcf-line);
  padding: 10px 0 6px;
}

.bcf-promo-rail {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 14px;
}

.bcf-promo-rail figure {
  margin: 0;
  width: 70px;
  text-align: center;
}

.bcf-promo-rail img {
  width: 62px;
  height: 62px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 8px 18px rgba(21, 32, 40, 0.12);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.bcf-promo-rail a:hover img {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 12px 24px rgba(21, 32, 40, 0.18);
}

.bcf-promo-rail figcaption {
  margin-top: 4px;
  font-size: 11px;
  color: #667787;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Navigation */
.bcf-nav {
  position: sticky;
  top: 0;
  z-index: 80;
  height: var(--bcf-nav-h);
  display: flex;
  align-items: center;
  background: rgba(244, 250, 248, 0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--bcf-line);
}

.bcf-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(100% - 32px, var(--bcf-max));
  margin-inline: auto;
}

.bcf-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--bcf-ink);
}

.bcf-brand img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  object-fit: cover;
}

.bcf-brand strong {
  font-family: var(--bcf-font-display);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
}

.bcf-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.bcf-menu a {
  text-decoration: none;
  color: var(--bcf-ink-soft);
  font-size: 0.95rem;
  font-weight: 500;
}

.bcf-menu a:hover,
.bcf-menu a[aria-current="page"] {
  color: var(--bcf-teal-deep);
}

.bcf-menu-toggle {
  display: none;
  border: 1px solid var(--bcf-line);
  background: #fff;
  border-radius: 10px;
  padding: 8px 12px;
  font: inherit;
  cursor: pointer;
}

/* Sticky download dock */
.bcf-dock {
  position: sticky;
  top: var(--bcf-nav-h);
  z-index: 70;
  display: none;
  background: rgba(21, 32, 40, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 8px 0;
}

.bcf-dock.is-visible {
  display: block;
}

.bcf-dock-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px 6px;
  width: min(100% - 20px, var(--bcf-max));
  margin-inline: auto;
  justify-items: center;
}

.bcf-dock-grid a {
  text-decoration: none;
  color: #d7e6e3;
  width: 100%;
  max-width: 72px;
  text-align: center;
}

.bcf-dock-grid img {
  width: 48px;
  height: 48px;
  margin-inline: auto;
  border-radius: 14px;
  object-fit: cover;
}

.bcf-dock-grid span {
  display: block;
  margin-top: 3px;
  font-size: 10px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Hero */
.bcf-hero {
  position: relative;
  overflow: hidden;
  padding: 42px 0 28px;
}

.bcf-hero::before {
  content: "";
  position: absolute;
  inset: 8% -10% auto auto;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 158, 150, 0.28), transparent 68%);
  pointer-events: none;
}

.bcf-hero-grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.bcf-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bcf-teal-deep);
  margin-bottom: 10px;
}

.bcf-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--bcf-teal), var(--bcf-coral));
}

.bcf-hero h1 {
  font-family: var(--bcf-font-display);
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1.25;
  margin: 0 0 14px;
  letter-spacing: 0.02em;
}

.bcf-hero-lead {
  font-size: 1.05rem;
  color: var(--bcf-ink-soft);
  margin: 0 0 18px;
  max-width: 36em;
}

.bcf-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.bcf-hero-meta li {
  background: var(--bcf-glass);
  border: 1px solid var(--bcf-line);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.86rem;
  color: var(--bcf-ink-soft);
}

.bcf-hero-visual {
  position: relative;
  min-height: 280px;
}

.bcf-phone {
  width: min(100%, 280px);
  margin-inline: auto;
  border-radius: 28px;
  overflow: hidden;
  border: 3px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--bcf-shadow);
  transform: rotate(-3deg);
  animation: bcf-float 5.5s ease-in-out infinite;
}

.bcf-phone-alt {
  position: absolute;
  right: 4%;
  bottom: -6%;
  width: min(42%, 170px);
  border-radius: 22px;
  overflow: hidden;
  border: 2px solid #fff;
  box-shadow: var(--bcf-shadow);
  transform: rotate(7deg);
  animation: bcf-float 6.2s ease-in-out infinite reverse;
}

@keyframes bcf-float {
  0%,
  100% {
    transform: translateY(0) rotate(-3deg);
  }
  50% {
    transform: translateY(-10px) rotate(-2deg);
  }
}

.bcf-phone-alt {
  animation-name: bcf-float-alt;
}

@keyframes bcf-float-alt {
  0%,
  100% {
    transform: translateY(0) rotate(7deg);
  }
  50% {
    transform: translateY(-8px) rotate(8deg);
  }
}

/* Sections */
.bcf-section {
  padding: 42px 0;
}

.bcf-section h2 {
  font-family: var(--bcf-font-display);
  font-size: clamp(1.55rem, 3.5vw, 2.1rem);
  margin: 0 0 12px;
  line-height: 1.35;
}

.bcf-section h3 {
  font-size: 1.18rem;
  margin: 22px 0 8px;
  color: var(--bcf-teal-deep);
}

.bcf-section p {
  margin: 0 0 14px;
  color: var(--bcf-ink-soft);
}

.bcf-lead {
  font-size: 1.02rem;
  max-width: 48em;
}

.bcf-ribbon {
  display: inline-block;
  background: linear-gradient(90deg, rgba(31, 158, 150, 0.16), rgba(255, 94, 77, 0.12));
  border-left: 3px solid var(--bcf-teal);
  padding: 4px 12px;
  border-radius: 0 10px 10px 0;
  font-size: 0.84rem;
  color: var(--bcf-teal-deep);
  margin-bottom: 10px;
}

.bcf-split {
  display: grid;
  gap: 24px;
  align-items: center;
}

.bcf-split.reverse .bcf-media {
  order: 2;
}

.bcf-media {
  border-radius: var(--bcf-radius);
  overflow: hidden;
  box-shadow: var(--bcf-shadow);
  background: #fff;
}

.bcf-media img {
  width: 100%;
  object-fit: cover;
}

.bcf-media.tilt {
  transform: rotate(1.5deg);
}

.bcf-card-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.bcf-card {
  background: var(--bcf-glass);
  border: 1px solid var(--bcf-line);
  border-radius: var(--bcf-radius);
  padding: 20px 18px;
  box-shadow: 0 10px 28px rgba(15, 48, 46, 0.06);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.bcf-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--bcf-shadow);
}

.bcf-card h3 {
  margin-top: 0;
  font-family: var(--bcf-font-display);
  color: var(--bcf-ink);
}

.bcf-card img {
  width: 100%;
  border-radius: 14px;
  margin-bottom: 12px;
}

.bcf-mosaic {
  display: grid;
  gap: 14px;
}

.bcf-mosaic article {
  background: #fff;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--bcf-line);
}

.bcf-mosaic article img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  max-height: 420px;
}

.bcf-mosaic article div {
  padding: 14px 16px 18px;
}

.bcf-rail {
  display: grid;
  gap: 14px;
  grid-auto-flow: column;
  grid-auto-columns: minmax(220px, 1fr);
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
}

.bcf-rail::-webkit-scrollbar {
  height: 6px;
}

.bcf-rail::-webkit-scrollbar-thumb {
  background: rgba(31, 158, 150, 0.35);
  border-radius: 999px;
}

.bcf-rail figure {
  margin: 0;
  scroll-snap-align: start;
  background: #fff;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--bcf-line);
}

.bcf-rail img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  max-height: 360px;
}

.bcf-rail figcaption {
  padding: 10px 12px 14px;
  font-size: 0.9rem;
  color: var(--bcf-ink-soft);
}

.bcf-text-block {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.75), rgba(232, 244, 242, 0.9));
  border: 1px solid var(--bcf-line);
  border-radius: 24px;
  padding: 22px 20px;
}

.bcf-quote {
  margin: 18px 0;
  padding: 16px 18px;
  border-radius: 16px;
  background: rgba(31, 158, 150, 0.08);
  border-left: 4px solid var(--bcf-coral);
  color: var(--bcf-ink);
  font-family: var(--bcf-font-display);
  font-size: 1.15rem;
}

.bcf-list {
  margin: 0 0 16px;
  padding-left: 1.2em;
  color: var(--bcf-ink-soft);
}

.bcf-list li {
  margin-bottom: 8px;
}

.bcf-cta-band {
  margin: 28px 0;
  padding: 24px 20px;
  border-radius: 24px;
  background:
    linear-gradient(120deg, rgba(31, 158, 150, 0.92), rgba(15, 111, 106, 0.95)),
    url("shot-comic-serial.jpg") center / cover;
  background-blend-mode: multiply;
  color: #fff;
  text-align: center;
}

.bcf-cta-band h2,
.bcf-cta-band p {
  color: #fff;
}

.bcf-cta-band a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  background: #fff;
  color: var(--bcf-teal-deep);
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

.bcf-cta-band a:hover {
  color: var(--bcf-coral);
}

.bcf-faq details {
  background: #fff;
  border: 1px solid var(--bcf-line);
  border-radius: 14px;
  padding: 12px 16px;
  margin-bottom: 10px;
}

.bcf-faq summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--bcf-ink);
}

.bcf-faq p {
  margin-top: 10px;
}

/* Legal / subpages */
.bcf-page-hero {
  padding: 34px 0 10px;
}

.bcf-page-hero h1 {
  font-family: var(--bcf-font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin: 8px 0 10px;
}

.bcf-crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.88rem;
  color: var(--bcf-ink-soft);
}

.bcf-crumb a {
  text-decoration: none;
}

.bcf-crumb li:not(:last-child)::after {
  content: "/";
  margin-left: 6px;
  color: #9aa8b2;
}

.bcf-prose {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--bcf-line);
  border-radius: 24px;
  padding: 24px 20px;
  margin: 18px 0 40px;
}

.bcf-prose h2 {
  font-family: var(--bcf-font-display);
  font-size: 1.4rem;
  margin: 26px 0 10px;
}

.bcf-prose h2:first-child {
  margin-top: 0;
}

.bcf-prose h3 {
  font-size: 1.08rem;
  margin: 18px 0 8px;
  color: var(--bcf-teal-deep);
}

.bcf-status {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px 0;
}

.bcf-status-card {
  width: min(100%, 560px);
  background: var(--bcf-glass);
  border: 1px solid var(--bcf-line);
  border-radius: 28px;
  padding: 36px 24px;
  box-shadow: var(--bcf-shadow);
}

.bcf-status-card .code {
  font-family: var(--bcf-font-display);
  font-size: 4rem;
  line-height: 1;
  background: linear-gradient(90deg, var(--bcf-teal), var(--bcf-coral));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.bcf-status-card a.btn {
  display: inline-block;
  margin-top: 12px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--bcf-teal);
  color: #fff;
  text-decoration: none;
}

.bcf-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 16px;
}

.bcf-links a {
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(31, 158, 150, 0.1);
}

/* Footer */
.bcf-footer {
  margin-top: 20px;
  padding: 34px 0 70px;
  background: #122027;
  color: #c5d5d2;
}

.bcf-footer a {
  color: #9fe2db;
  text-decoration: none;
}

.bcf-footer-grid {
  display: grid;
  gap: 22px;
}

.bcf-footer h2 {
  font-family: var(--bcf-font-display);
  font-size: 1.2rem;
  color: #fff;
  margin: 0 0 8px;
}

.bcf-footer p,
.bcf-footer li {
  font-size: 0.92rem;
  line-height: 1.7;
}

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

.bcf-footer li {
  margin-bottom: 6px;
}

.bcf-copy {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: #8aa0a0;
}

@media (min-width: 720px) {
  .bcf-dock-grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }

  .bcf-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .bcf-split {
    grid-template-columns: 1fr 1fr;
  }

  .bcf-split.reverse .bcf-media {
    order: 0;
  }

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

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

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

@media (min-width: 980px) {
  .bcf-card-grid.three {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 719px) {
  .bcf-menu-toggle {
    display: inline-flex;
  }

  .bcf-menu {
    display: none;
    position: absolute;
    top: var(--bcf-nav-h);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 14px 18px 18px;
    border-bottom: 1px solid var(--bcf-line);
  }

  .bcf-menu.is-open {
    display: flex;
  }

  .bcf-phone-alt {
    display: none;
  }

  .bcf-split.reverse .bcf-media {
    order: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}