/* bkmhapp.mom — Folio editorial ACG brand system (unique to this site) */
:root {
  --ink: #12161f;
  --ink-soft: #2a3140;
  --paper: #fff7f2;
  --paper-2: #ffe8de;
  --rose: #ff3d6e;
  --rose-deep: #d4184f;
  --coral: #ff7a45;
  --aqua: #18c5b5;
  --sky: #4aa8ff;
  --line: rgba(18, 22, 31, 0.1);
  --glass: rgba(255, 247, 242, 0.72);
  --shadow: 0 18px 50px rgba(18, 22, 31, 0.12);
  --radius: 22px;
  --max: 1080px;
  --header-h: 58px;
  --font-display: "ZCOOL XiaoWei", "Noto Serif SC", "Songti SC", serif;
  --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(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  background:
    radial-gradient(900px 420px at 8% -10%, rgba(255, 61, 110, 0.18), transparent 55%),
    radial-gradient(700px 380px at 96% 8%, rgba(24, 197, 181, 0.16), transparent 50%),
    linear-gradient(180deg, #fff9f5 0%, var(--paper) 38%, #fff2ea 100%);
  min-height: 100vh;
}

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

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

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

.folio-shell {
  width: min(100% - 28px, var(--max));
  margin-inline: auto;
}

/* —— Top promo ads (visible without scroll) —— */
.folio-promo {
  background: linear-gradient(90deg, #1a1020, #2a1230 45%, #13262e);
  padding: 10px 0 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.folio-ads-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 8px;
}

.folio-ad-item {
  width: 70px;
  text-align: center;
}

.folio-ad-item figure {
  margin: 0;
}

.folio-ad-item img {
  width: 65px;
  height: 65px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.28);
  background: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.folio-ad-item a:hover img {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
}

.folio-ad-caption {
  margin-top: 4px;
  height: 15px;
  font-size: 11px;
  color: rgba(255, 247, 242, 0.78);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* sticky dock ads use dark caption on light */
#folio-dock-ads .folio-ad-caption {
  color: #666;
}

/* —— Header —— */
.folio-header {
  position: sticky;
  top: 0;
  z-index: 80;
  backdrop-filter: blur(14px);
  background: var(--glass);
  border-bottom: 1px solid var(--line);
  min-height: var(--header-h);
}

.folio-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: var(--header-h);
}

.folio-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
}

.folio-brand img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  box-shadow: 0 6px 16px rgba(255, 61, 110, 0.28);
}

.folio-brand-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.04em;
}

.folio-nav-toggle {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 14px;
  cursor: pointer;
}

.folio-nav {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: rgba(255, 251, 248, 0.97);
  border-bottom: 1px solid var(--line);
  padding: 12px 16px 16px;
  flex-direction: column;
  gap: 4px;
}

.folio-nav.is-open {
  display: flex;
}

.folio-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 600;
}

.folio-nav a:hover,
.folio-nav a.is-current {
  background: linear-gradient(90deg, rgba(255, 61, 110, 0.12), rgba(24, 197, 181, 0.1));
  color: var(--rose-deep);
}

@media (min-width: 880px) {
  .folio-nav-toggle {
    display: none;
  }
  .folio-header-row {
    position: relative;
  }
  .folio-nav {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    background: transparent;
    border: 0;
    padding: 0;
    gap: 2px;
  }
}

/* —— Sticky download dock —— */
.folio-sticky-dock {
  position: sticky;
  top: var(--header-h);
  z-index: 70;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition: max-height 0.28s ease, opacity 0.22s ease, padding 0.22s ease;
  background: rgba(255, 252, 249, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 0 solid var(--line);
}

.folio-sticky-dock.is-pinned {
  max-height: 220px;
  opacity: 1;
  pointer-events: auto;
  padding: 8px 0 10px;
  border-bottom-width: 1px;
  box-shadow: 0 10px 28px rgba(18, 22, 31, 0.08);
}

.folio-dock-label {
  margin: 0 0 6px;
  font-size: 12px;
  color: #7a7080;
  text-align: center;
}

#folio-dock-ads {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 8px;
}

/* mobile: 4 per row (70px * 4 + gaps ≈ fits) */
#folio-dock-ads .folio-ad-item {
  width: calc(25% - 8px);
  max-width: 78px;
}

@media (min-width: 900px) {
  /* desktop: 8 per row */
  #folio-dock-ads .folio-ad-item {
    width: calc(12.5% - 8px);
    max-width: 78px;
  }
}

body.folio-dock-active {
  /* content not covered — dock is in flow when pinned via sticky */
}

/* —— Hero (no download CTA) —— */
.folio-hero {
  position: relative;
  overflow: hidden;
  padding: 36px 0 28px;
}

.folio-hero::before {
  content: "";
  position: absolute;
  inset: 8% -20% auto auto;
  width: 280px;
  height: 280px;
  border-radius: 40% 60% 55% 45%;
  background: conic-gradient(from 120deg, rgba(255, 61, 110, 0.35), rgba(24, 197, 181, 0.2), transparent 70%);
  filter: blur(2px);
  animation: folio-spin 18s linear infinite;
  pointer-events: none;
}

@keyframes folio-spin {
  to {
    transform: rotate(360deg);
  }
}

.folio-hero-panel {
  position: relative;
  padding: 28px 22px 30px;
  border-radius: 28px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.82), rgba(255, 232, 222, 0.55)),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 10px,
      rgba(255, 61, 110, 0.03) 10px,
      rgba(255, 61, 110, 0.03) 11px
    );
  border: 1px solid rgba(255, 61, 110, 0.14);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.folio-hero-panel::after {
  content: "";
  position: absolute;
  left: -8%;
  bottom: -35%;
  width: 55%;
  height: 70%;
  background: radial-gradient(circle, rgba(74, 168, 255, 0.18), transparent 68%);
  pointer-events: none;
}

.folio-kicker {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--aqua);
  font-weight: 700;
  margin-bottom: 10px;
}

.folio-hero h1 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 5.2vw, 2.35rem);
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--ink);
  position: relative;
  z-index: 1;
}

.folio-hero-lead {
  margin: 0;
  max-width: 42em;
  color: var(--ink-soft);
  font-size: 1.02rem;
  position: relative;
  z-index: 1;
}

.folio-hero-meta {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  position: relative;
  z-index: 1;
}

.folio-pill {
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(18, 22, 31, 0.06);
  color: var(--ink-soft);
  border: 1px solid var(--line);
}

/* —— Article layout —— */
.folio-main {
  padding: 8px 0 48px;
}

.folio-chapter {
  margin: 0 0 34px;
  padding: 22px 0 4px;
}

.folio-chapter > h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.28rem, 3.8vw, 1.75rem);
  line-height: 1.4;
  position: relative;
  padding-left: 14px;
}

.folio-chapter > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.25em;
  bottom: 0.25em;
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--rose), var(--aqua));
}

.folio-chapter h3 {
  margin: 1.15em 0 0.55em;
  font-size: 1.08rem;
  color: var(--ink);
}

.folio-chapter p {
  margin: 0 0 1em;
  color: var(--ink-soft);
}

.folio-lead {
  font-size: 1.05rem;
  color: var(--ink);
}

.folio-divider {
  height: 1px;
  margin: 8px auto 28px;
  width: min(100%, 220px);
  background: linear-gradient(90deg, transparent, var(--rose), var(--aqua), transparent);
  opacity: 0.55;
}

/* text + image pairs */
.folio-duo {
  display: grid;
  gap: 18px;
  align-items: center;
  margin: 18px 0 8px;
}

.folio-duo.is-flip .folio-frame {
  order: -1;
}

@media (min-width: 760px) {
  .folio-duo {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 28px;
  }
  .folio-duo.is-flip {
    grid-template-columns: 0.85fr 1.15fr;
  }
  .folio-duo.is-flip .folio-frame {
    order: 0;
  }
}

.folio-frame {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: #1a1020;
  transform: rotate(-1.2deg);
}

.folio-duo.is-flip .folio-frame {
  transform: rotate(1.4deg);
}

.folio-frame img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top center;
  max-height: 520px;
}

.folio-frame-tag {
  position: absolute;
  left: 12px;
  bottom: 12px;
  z-index: 1;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(18, 22, 31, 0.62);
  color: #fff;
  backdrop-filter: blur(6px);
}

/* feature tiles */
.folio-tiles {
  display: grid;
  gap: 12px;
  margin: 16px 0 8px;
}

@media (min-width: 640px) {
  .folio-tiles {
    grid-template-columns: repeat(3, 1fr);
  }
}

.folio-tile {
  padding: 16px 16px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  box-shadow: 0 10px 24px rgba(18, 22, 31, 0.05);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.folio-tile:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 61, 110, 0.35);
}

.folio-tile h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--rose-deep);
}

.folio-tile p {
  margin: 0;
  font-size: 0.95rem;
}

/* mosaic / bento */
.folio-mosaic {
  display: grid;
  gap: 12px;
  margin: 16px 0;
}

@media (min-width: 720px) {
  .folio-mosaic {
    grid-template-columns: 1.2fr 1fr;
  }
}

.folio-mosaic-card {
  padding: 18px;
  border-radius: 20px;
  background: linear-gradient(160deg, #fff, #ffe9df);
  border: 1px solid rgba(255, 122, 69, 0.2);
}

.folio-mosaic-card.is-accent {
  background: linear-gradient(145deg, #1c2433, #2a1630);
  color: #fff7f2;
  border-color: transparent;
}

.folio-mosaic-card.is-accent h3,
.folio-mosaic-card.is-accent p {
  color: #fff7f2;
}

.folio-mosaic-card h3 {
  margin-top: 0;
}

/* timeline */
.folio-timeline {
  margin: 18px 0;
  padding-left: 18px;
  border-left: 2px dashed rgba(255, 61, 110, 0.35);
}

.folio-timeline-item {
  position: relative;
  padding: 0 0 18px 14px;
}

.folio-timeline-item::before {
  content: "";
  position: absolute;
  left: -23px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--aqua);
  box-shadow: 0 0 0 4px rgba(24, 197, 181, 0.2);
}

.folio-timeline-item h3 {
  margin: 0 0 6px;
}

.folio-timeline-item p {
  margin: 0;
}

/* pull quote */
.folio-quote {
  margin: 22px 0;
  padding: 18px 18px 18px 22px;
  border-radius: 0 20px 20px 0;
  border-left: 5px solid var(--coral);
  background: rgba(255, 122, 69, 0.08);
  font-family: var(--font-display);
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--ink);
}

/* step list */
.folio-steps {
  counter-reset: folio-step;
  list-style: none;
  margin: 16px 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.folio-steps li {
  counter-increment: folio-step;
  position: relative;
  padding: 14px 14px 14px 58px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
}

.folio-steps li::before {
  content: counter(folio-step, decimal-leading-zero);
  position: absolute;
  left: 12px;
  top: 14px;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 12px;
  color: #fff;
  background: linear-gradient(135deg, var(--rose), var(--coral));
}

/* FAQ */
.folio-faq details {
  margin: 0 0 10px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--line);
}

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

.folio-faq details p {
  margin: 10px 0 0;
}

/* breadcrumb */
.folio-crumb {
  margin: 16px 0 8px;
  font-size: 13px;
  color: #7a7080;
}

.folio-crumb a {
  color: #7a7080;
  text-decoration: none;
}

.folio-crumb a:hover {
  color: var(--rose-deep);
}

.folio-crumb span {
  margin: 0 6px;
  opacity: 0.5;
}

/* legal pages */
.folio-legal-hero {
  padding: 22px 0 8px;
}

.folio-legal-hero h1 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2rem);
}

.folio-prose {
  padding-bottom: 40px;
}

.folio-prose h2 {
  margin-top: 1.6em;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.folio-prose ul {
  padding-left: 1.2em;
  color: var(--ink-soft);
}

/* footer */
.folio-footer {
  border-top: 1px solid var(--line);
  background: #151922;
  color: rgba(255, 247, 242, 0.78);
  padding: 28px 0 36px;
  margin-top: 20px;
}

.folio-footer a {
  color: #ffb3c5;
  text-decoration: none;
}

.folio-footer a:hover {
  color: #fff;
}

.folio-footer-grid {
  display: grid;
  gap: 18px;
}

@media (min-width: 700px) {
  .folio-footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.folio-footer h2 {
  margin: 0 0 10px;
  font-size: 0.95rem;
  color: #fff;
  font-family: var(--font-display);
}

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

.folio-footer li {
  margin: 0 0 8px;
}

.folio-copy {
  margin-top: 22px;
  font-size: 12px;
  opacity: 0.65;
}

/* error pages */
.folio-error {
  min-height: 58vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px 16px;
}

.folio-error h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 3.4rem);
  margin: 0 0 10px;
  background: linear-gradient(90deg, var(--rose), var(--aqua));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.folio-error p {
  max-width: 28em;
  margin: 0 auto 18px;
  color: var(--ink-soft);
}

.folio-error-link {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--rose), var(--coral));
  color: #fff !important;
  text-decoration: none;
  font-weight: 700;
}

/* motion */
.folio-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.folio-reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .folio-reveal,
  .folio-hero::before,
  .folio-ad-item img {
    animation: none !important;
    transition: none !important;
  }
  .folio-reveal {
    opacity: 1;
    transform: none;
  }
}