/* ===== ABG游艺 共享样式 /assets/site.css ===== */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, li, figure, dl, dd { margin: 0; }
ul, ol { list-style: none; padding: 0; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea, select { font: inherit; }

:root {
  --abyss: #061A2E;
  --reef: #0B2740;
  --panel: #123253;
  --cyan: #24F0D8;
  --cyan-soft: #5EF7E5;
  --magenta: #FF2E88;
  --orange: #FF9F1C;
  --violet: #7A5CFF;
  --mint: #E8F6FF;
  --slate: #7C93A8;
  --gold: #FFD8A8;
  --line: rgba(36, 240, 216, 0.20);
  --line-soft: rgba(124, 147, 168, 0.24);
  --font-head: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --shell: 1180px;
  --gutter: clamp(18px, 4vw, 56px);
  --radius: 2px;
  --ease: cubic-bezier(.22, .68, .32, 1);
}

/* ===== 基础排版 ===== */
body {
  background: var(--abyss);
  color: var(--mint);
  font-family: var(--font-head);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(124, 147, 168, 0.075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 147, 168, 0.075) 1px, transparent 1px);
  background-size: 64px 64px, 64px 64px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 20%, rgba(0,0,0,.35) 70%, transparent 100%);
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 20%, rgba(0,0,0,.35) 70%, transparent 100%);
}

h1, h2, h3, h4 { font-weight: 800; line-height: 1.16; letter-spacing: 0.06em; color: var(--mint); }
h1 { font-size: clamp(2rem, 6vw, 4rem); }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.35rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
p { max-width: 42ch; }

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

#main-content { position: relative; z-index: 1; padding-top: clamp(96px, 13vw, 140px); }

/* ===== 跳至主内容 ===== */
.abg-skip {
  position: fixed;
  left: var(--gutter);
  top: -80px;
  z-index: 95;
  background: var(--cyan);
  color: #04202B;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 10px 16px;
  border-radius: var(--radius);
  transition: top 0.22s var(--ease);
}
.abg-skip:focus { top: 14px; }

/* ===== 头部：悬浮胶囊导航 ===== */
.abg-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  padding: clamp(10px, 1.6vw, 18px) var(--gutter) 0;
  pointer-events: none;
  transition: padding 0.3s var(--ease);
}

.abg-header__inner {
  pointer-events: auto;
  position: relative;
  max-width: var(--shell);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  padding: 10px 14px 10px 20px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(18, 50, 83, 0.92) 0%, rgba(6, 26, 46, 0.80) 100%);
  box-shadow: 0 18px 48px -26px rgba(0, 0, 0, 0.95), inset 0 0 0 1px rgba(36, 240, 216, 0.06);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  transition: padding 0.3s var(--ease), opacity 0.3s var(--ease), background 0.3s var(--ease);
}

.abg-header__inner::after {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), var(--magenta), transparent);
  opacity: 0.55;
  pointer-events: none;
}

.abg-header[data-compact="true"] { padding-top: 6px; }
.abg-header[data-compact="true"] .abg-header__inner {
  padding-top: 6px;
  padding-bottom: 6px;
  opacity: 0.9;
  background: linear-gradient(180deg, rgba(11, 39, 64, 0.88) 0%, rgba(6, 26, 46, 0.68) 100%);
}
.abg-header[data-compact="true"] .abg-brand__ver { opacity: 0; }

/* 品牌 */
.abg-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding-right: 4px;
}
.abg-brand__mark {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  background: linear-gradient(135deg, var(--cyan) 0%, var(--violet) 55%, var(--magenta) 100%);
  box-shadow: 0 0 14px rgba(36, 240, 216, 0.6);
  animation: abg-mark-pulse 4s ease-in-out infinite;
}
@keyframes abg-mark-pulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.04); }
}
.abg-brand__name {
  font-weight: 900;
  font-size: 1.02rem;
  letter-spacing: 0.12em;
  color: var(--mint);
}
.abg-brand__ver {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  color: var(--slate);
  border: 1px solid var(--line-soft);
  padding: 1px 6px;
  border-radius: var(--radius);
  transition: opacity 0.25s var(--ease);
}

/* 导航 */
.abg-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}
.abg-nav__list { display: flex; align-items: center; gap: 2px; }
.abg-nav__item { display: block; }
.abg-nav__link {
  display: inline-block;
  padding: 7px 12px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--mint);
  border-radius: 999px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.abg-nav__link:hover { color: var(--cyan); background: rgba(36, 240, 216, 0.08); }
.abg-nav__link[aria-current="page"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  background: rgba(36, 240, 216, 0.10);
}

.abg-nav__cta {
  display: inline-flex;
  align-items: center;
  margin-left: 8px;
  padding: 8px 16px;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #04202B;
  background: linear-gradient(120deg, var(--cyan) 0%, var(--cyan-soft) 60%, var(--violet) 140%);
  border-radius: var(--radius);
  box-shadow: 0 12px 26px -16px rgba(36, 240, 216, 0.9);
  transition: filter 0.2s var(--ease), transform 0.2s var(--ease);
}
.abg-nav__cta:hover { filter: brightness(1.08); transform: translateY(-1px); }

/* 移动导航按钮 */
.abg-nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding: 9px 14px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  color: var(--cyan);
}
.abg-nav-toggle__bar,
.abg-nav-toggle__bar::before,
.abg-nav-toggle__bar::after {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--cyan);
}
.abg-nav-toggle__bar { position: relative; }
.abg-nav-toggle__bar::before,
.abg-nav-toggle__bar::after { content: ""; position: absolute; left: 0; }
.abg-nav-toggle__bar::before { top: -5px; }
.abg-nav-toggle__bar::after { top: 5px; }
.abg-nav-toggle__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  color: var(--slate);
}
.abg-nav-toggle[aria-expanded="true"] .abg-nav-toggle__bar { background: var(--magenta); }
.abg-nav-toggle[aria-expanded="true"] .abg-nav-toggle__bar::before,
.abg-nav-toggle[aria-expanded="true"] .abg-nav-toggle__bar::after { background: var(--magenta); }

/* 移动端第二栏：订阅收藏入口 */
.abg-dock { display: none; }
.abg-dock__link {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 18px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #04202B;
  background: linear-gradient(120deg, var(--cyan) 0%, var(--cyan-soft) 45%, var(--violet) 130%);
  border-radius: var(--radius);
  box-shadow: 0 16px 36px -18px rgba(36, 240, 216, 0.9);
}
.abg-dock__link::before { content: "◎"; font-size: 0.9rem; }

/* 滚动进度光条 */
.abg-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 2px;
  z-index: 88;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--violet) 55%, var(--magenta) 100%);
  box-shadow: 0 0 14px rgba(36, 240, 216, 0.55);
}

/* ===== 页脚：两屏横向卷轴 ===== */
.abg-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(64px, 10vw, 140px);
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(6, 26, 46, 0) 0%, rgba(11, 39, 64, 0.72) 60%, rgba(6, 26, 46, 0.95) 100%);
}

.abg-scroll-strip {
  height: 22px;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background-image:
    repeating-linear-gradient(90deg, rgba(36, 240, 216, 0.38) 0 2px, transparent 2px 14px),
    linear-gradient(90deg, rgba(122, 92, 255, 0.22), rgba(255, 46, 136, 0.20), rgba(36, 240, 216, 0.18));
  animation: abg-strip 14s linear infinite;
}
@keyframes abg-strip {
  from { background-position: 0 0, 0 0; }
  to { background-position: 224px 0, 0 0; }
}

.abg-footer__rail {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.abg-footer__panel {
  padding: clamp(28px, 4vw, 56px) clamp(18px, 3vw, 44px);
  border-right: 1px solid var(--line-soft);
}
.abg-footer__panel:last-child { border-right: 0; padding-right: 0; }
.abg-footer__panel:first-child { padding-left: 0; }

.abg-footer__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  color: var(--cyan);
  margin-bottom: 10px;
  max-width: none;
}
.abg-footer__brand {
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: 0.14em;
  color: var(--mint);
  margin-bottom: 6px;
  max-width: none;
}
.abg-footer__title {
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}

.abg-kv { display: grid; gap: 1px; background: var(--line-soft); margin-bottom: 22px; }
.abg-kv__item {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: baseline;
  padding: 10px 2px;
  background: rgba(6, 26, 46, 0.62);
}
.abg-kv__k {
  flex: 0 0 5.6em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--slate);
}
.abg-kv__v {
  font-size: 0.9rem;
  color: var(--mint);
  word-break: break-word;
}

.abg-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-bottom: 6px;
}

.abg-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 20px var(--gutter) 26px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.abg-footer__side {
  display: none;
  position: absolute;
  right: 14px;
  top: 90px;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.34em;
  color: rgba(124, 147, 168, 0.7);
  max-width: none;
}

/* ===== 通用按钮 / 链接 / 标签 ===== */
.abg-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: transparent;
  color: var(--mint);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.abg-btn:hover { transform: translateY(-1px); }
.abg-btn--primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04202B;
  box-shadow: 0 14px 32px -18px rgba(36, 240, 216, 0.9);
}
.abg-btn--primary:hover { background: var(--cyan-soft); }
.abg-btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.abg-btn--magenta {
  background: var(--magenta);
  border-color: var(--magenta);
  color: #2A0011;
}
.abg-btn--magenta:hover { filter: brightness(1.08); }

.abg-link {
  color: var(--cyan);
  border-bottom: 1px solid rgba(36, 240, 216, 0.45);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.abg-link:hover { border-bottom-color: var(--cyan); color: var(--cyan-soft); }

.abg-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  padding: 3px 8px;
  border: 1px solid rgba(255, 46, 136, 0.5);
  background: rgba(255, 46, 136, 0.09);
  color: var(--magenta);
}

.abg-divider { height: 1px; margin: 0; border: 0; background: var(--line-soft); }

/* ===== 容器 / 章节 / 栅格 ===== */
.abg-shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 1;
}

.abg-section { padding: clamp(40px, 6vw, 88px) 0; }
.abg-section__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: clamp(20px, 3vw, 38px);
}
.abg-section__title { font-size: clamp(1.35rem, 2.8vw, 2rem); font-weight: 800; letter-spacing: 0.07em; }

.abg-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  color: var(--cyan);
  max-width: none;
}
.abg-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
}
.abg-note {
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--slate);
  max-width: 38ch;
}

.abg-grid { display: grid; gap: clamp(12px, 2vw, 22px); grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.abg-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.abg-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.abg-card {
  position: relative;
  padding: clamp(16px, 2vw, 24px);
  background: linear-gradient(180deg, var(--panel) 0%, var(--reef) 100%);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}
.abg-card:hover { transform: translateY(-3px); border-color: rgba(36, 240, 216, 0.55); }
.abg-card__title {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.abg-card__meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--slate);
}
.abg-card p { max-width: 34ch; }

/* ===== 面包屑 ===== */
.abg-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--slate);
  margin-bottom: 20px;
}
.abg-breadcrumb__item { display: inline-flex; align-items: center; }
.abg-breadcrumb__item + .abg-breadcrumb__item::before {
  content: "/";
  margin: 0 10px;
  color: rgba(124, 147, 168, 0.55);
}
.abg-breadcrumb__item a:hover { color: var(--cyan); }

/* ===== 图片占位容器 ===== */
.abg-media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background:
    linear-gradient(150deg, var(--reef) 0%, var(--abyss) 100%);
}
.abg-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(36, 240, 216, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 240, 216, 0.10) 1px, transparent 1px);
  background-size: 28px 28px, 28px 28px;
  opacity: 0.75;
  pointer-events: none;
}
.abg-media img {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.06);
}
.abg-media--wide { aspect-ratio: 21 / 9; }
.abg-media--tall { aspect-ratio: 4 / 5; }
.abg-media--square { aspect-ratio: 1 / 1; }
.abg-media__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
  background: rgba(6, 26, 46, 0.82);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

/* ===== 滚动显现协议 ===== */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* ===== 移动端导航与页脚 ===== */
@media (max-width: 900px) {
  body { padding-bottom: 84px; }

  .abg-header { padding-left: 12px; padding-right: 12px; }
  .abg-header__inner { padding: 8px 10px 8px 16px; border-radius: 2px; }
  .abg-header__inner::after { left: 12px; right: 12px; }
  .abg-brand__ver { display: none; }

  .abg-nav-toggle { display: inline-flex; }

  .abg-nav {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    margin-left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(18, 50, 83, 0.98) 0%, rgba(6, 26, 46, 0.98) 100%);
    box-shadow: 0 26px 60px -30px rgba(0, 0, 0, 1);
  }
  .abg-nav[data-open="true"] { display: flex; }
  .abg-nav__list { flex-direction: column; align-items: stretch; gap: 2px; }
  .abg-nav__link {
    display: block;
    padding: 11px 12px;
    border-radius: var(--radius);
    border-bottom: 0;
    border-left: 2px solid transparent;
  }
  .abg-nav__link[aria-current="page"] {
    border-left-color: var(--cyan);
    border-bottom-color: transparent;
  }
  .abg-nav__cta { margin: 10px 0 0; justify-content: center; padding: 12px 16px; }

  .abg-dock {
    display: flex;
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: 12px;
    z-index: 72;
    pointer-events: auto;
  }

  .abg-footer__rail {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding: 0 var(--gutter) 8px;
    gap: 0;
  }
  .abg-footer__panel {
    flex: 0 0 84%;
    min-width: 84%;
    scroll-snap-align: start;
    padding: 30px 20px;
    border-right: 1px solid var(--line-soft);
  }
  .abg-footer__panel:first-child { padding-left: 4px; }
  .abg-footer__panel:last-child { padding-right: 4px; }
  .abg-footer__rail::-webkit-scrollbar { height: 6px; }
  .abg-footer__rail::-webkit-scrollbar-track { background: rgba(124, 147, 168, 0.16); }
  .abg-footer__rail::-webkit-scrollbar-thumb { background: rgba(36, 240, 216, 0.6); }

  .abg-footer__legal { padding-bottom: 20px; }

  .abg-grid--2,
  .abg-grid--3 { grid-template-columns: minmax(0, 1fr); }
}

@media (min-width: 901px) and (max-width: 1100px) {
  .abg-nav__link { padding: 7px 9px; font-size: 0.86rem; }
  .abg-brand__ver { display: none; }
}

@media (min-width: 1320px) {
  .abg-footer__side { display: block; }
}

/* ===== 减少动态 ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
  .abg-scroll-strip { animation: none; }
  .abg-brand__mark { animation: none; }
  .abg-card:hover, .abg-btn:hover, .abg-nav__cta:hover { transform: none; }
}