/* ==========================================================================
   ABG游艺 · /assets/site.css
   深空蓝底 + 电光青/霓虹紫/暖橙：展览画册式共享外壳
   ========================================================================== */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body,
h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }

ul, ol { padding: 0; list-style: none; }

img, svg, video { display: block; max-width: 100%; }

button, input, select, textarea { font: inherit; color: inherit; }

button { background: none; border: 0; cursor: pointer; }

a { color: inherit; text-decoration: none; }

table { border-collapse: collapse; width: 100%; }

:focus-visible {
  outline: 2px solid var(--abg-cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 变量 ---------- */
:root {
  --abg-bg: #070B1E;
  --abg-panel: #0F1733;
  --abg-line: #2A3350;
  --abg-cyan: #22E0D6;
  --abg-violet: #8A5CFF;
  --abg-orange: #FF8A3D;
  --abg-green: #3DDC97;
  --abg-ink: #F4F1E8;
  --abg-dim: #8C93A8;
  --abg-clay: #C97B63;
  --abg-moss: #6F8F6A;

  --abg-font-display: "Source Han Sans Heavy", "Source Han Sans SC", "Noto Sans SC",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --abg-font-body: "Source Han Sans Regular", "Source Han Sans SC", "Noto Sans SC",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --abg-font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --abg-shell: min(1200px, 90vw);
  --abg-radius: 14px;
  --abg-radius-sm: 10px;
  --abg-shadow: 0 20px 48px -30px rgba(2, 4, 14, 0.95);
  --abg-break: 900px;
}

/* ---------- 基础与中文排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--abg-bg);
  background-image:
    radial-gradient(58vw 48vh at 6% -12%, rgba(34, 224, 214, 0.18), transparent 62%),
    radial-gradient(48vw 42vh at 102% 4%, rgba(138, 92, 255, 0.20), transparent 64%),
    radial-gradient(72vw 58vh at 48% 108%, rgba(255, 138, 61, 0.14), transparent 66%);
  background-attachment: fixed;
  color: var(--abg-ink);
  font-family: var(--abg-font-body);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.32;
  background-image: repeating-linear-gradient(
    180deg,
    rgba(244, 241, 232, 0.028) 0px,
    rgba(244, 241, 232, 0.028) 1px,
    transparent 1px,
    transparent 3px
  );
}

html.abg-nav-open,
html.abg-nav-open body { overflow: hidden; }

::selection { background: rgba(34, 224, 214, 0.35); color: #051220; }

/* ---------- 布局壳 ---------- */
.abg-shell { width: var(--abg-shell); margin-inline: auto; }

.abg-main {
  position: relative;
  z-index: 1;
  display: block;
  padding-bottom: clamp(40px, 6vw, 80px);
}

.abg-band { position: relative; padding: clamp(38px, 6.5vw, 84px) 0; }

.abg-band--panel {
  background: linear-gradient(180deg, rgba(15, 23, 51, 0.9), rgba(15, 23, 51, 0.42));
  border-top: 1px solid var(--abg-line);
  border-bottom: 1px solid var(--abg-line);
}

.abg-section { position: relative; }

.abg-section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: clamp(20px, 3vw, 34px);
}

/* ---------- 标题与文字 ---------- */
.abg-h1 {
  font-family: var(--abg-font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1.03;
  letter-spacing: -0.01em;
  text-shadow: 0 0 42px rgba(34, 224, 214, 0.22), 0 0 2px rgba(138, 92, 255, 0.4);
}

.abg-h2 {
  font-family: var(--abg-font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.2vw, 2.5rem);
  line-height: 1.16;
}

.abg-h3 {
  font-family: var(--abg-font-display);
  font-weight: 800;
  font-size: 1.12rem;
  line-height: 1.4;
}

.abg-lede {
  max-width: 62ch;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  color: rgba(244, 241, 232, 0.84);
}

.abg-index {
  display: block;
  font-family: var(--abg-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.3em;
  color: var(--abg-violet);
}

.abg-anno {
  font-size: 0.76rem;
  letter-spacing: 0.22em;
  color: var(--abg-dim);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.abg-anno--tilt { transform: rotate(-12deg); }

.abg-prose { max-width: 74ch; }
.abg-prose h2 { margin-top: 2em; font-family: var(--abg-font-display); font-size: 1.5rem; }
.abg-prose h3 { margin-top: 1.6em; font-size: 1.12rem; font-weight: 800; }
.abg-prose p + p { margin-top: 1em; }
.abg-prose p { color: rgba(244, 241, 232, 0.86); }
.abg-prose strong { color: var(--abg-cyan); }
.abg-prose a { color: var(--abg-cyan); border-bottom: 1px solid rgba(34, 224, 214, 0.45); }

/* ---------- 通用图形与装饰 ---------- */
.abg-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border: 1px solid var(--abg-line);
  border-radius: 999px;
  background: rgba(244, 241, 232, 0.04);
  font-size: 12.5px;
  line-height: 1.5;
  color: rgba(244, 241, 232, 0.86);
  white-space: nowrap;
}

.abg-label--new { border-color: rgba(255, 138, 61, 0.6); color: #FFC79B; background: rgba(255, 138, 61, 0.12); }
.abg-label--ok { border-color: rgba(61, 220, 151, 0.55); color: #A6F2CE; background: rgba(61, 220, 151, 0.12); }
.abg-label--season { border-color: rgba(138, 92, 255, 0.6); color: #C9B6FF; background: rgba(138, 92, 255, 0.14); }

.abg-status {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--abg-line);
  border-radius: var(--abg-radius-sm);
  background: rgba(15, 23, 51, 0.72);
  font-size: 0.92rem;
}

.abg-status__dot {
  width: 9px;
  height: 9px;
  flex: 0 0 9px;
  border-radius: 50%;
  background: var(--abg-orange);
  box-shadow: 0 0 12px currentColor;
}

.abg-status--ok { border-color: rgba(61, 220, 151, 0.45); }
.abg-status--ok .abg-status__dot { background: var(--abg-green); }
.abg-status--warn .abg-status__dot { background: var(--abg-orange); }

.abg-list { display: grid; gap: 10px; }
.abg-list li {
  position: relative;
  padding-left: 22px;
  color: rgba(244, 241, 232, 0.86);
}
.abg-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border: 1px solid var(--abg-cyan);
  transform: rotate(45deg);
}

.abg-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--abg-line);
  border-radius: var(--abg-radius);
  background:
    linear-gradient(140deg, rgba(34, 224, 214, 0.16), rgba(138, 92, 255, 0.18) 55%, rgba(255, 138, 61, 0.14));
  box-shadow: var(--abg-shadow);
}

.abg-media--wide { aspect-ratio: 21 / 9; }
.abg-media--square { aspect-ratio: 1 / 1; }
.abg-media--tall { aspect-ratio: 3 / 4; }

.abg-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.abg-media__inner {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 18px;
  text-align: center;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: rgba(244, 241, 232, 0.72);
}

.abg-media__glow {
  position: absolute;
  left: -20%;
  right: -20%;
  bottom: -38%;
  height: 70%;
  pointer-events: none;
  background: radial-gradient(closest-side, rgba(34, 224, 214, 0.38), transparent);
  filter: blur(12px);
}

/* ---------- 卡片与网格 ---------- */
.abg-panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 30px);
  border: 1px solid var(--abg-line);
  border-radius: var(--abg-radius);
  background: linear-gradient(160deg, rgba(15, 23, 51, 0.96), rgba(15, 23, 51, 0.6));
  box-shadow: var(--abg-shadow);
}

.abg-card {
  position: relative;
  padding: clamp(16px, 2.2vw, 26px);
  border: 1px solid var(--abg-line);
  border-radius: var(--abg-radius);
  background: linear-gradient(150deg, rgba(15, 23, 51, 0.94), rgba(7, 11, 30, 0.72));
  box-shadow: var(--abg-shadow);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.abg-card:hover { border-color: rgba(34, 224, 214, 0.5); }
.abg-card--tilt { transform: rotate(-1.6deg); }
.abg-card--tilt:hover { transform: rotate(-1.6deg) translateY(-2px); }
.abg-card--overlap { position: relative; z-index: 2; margin-top: -22px; }
.abg-card--offset { margin-left: clamp(0px, 4vw, 56px); }

.abg-grid { display: grid; gap: clamp(16px, 2vw, 26px); }
.abg-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.abg-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.abg-grid--split { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); align-items: start; }

.abg-overlap { margin-top: -18px; }

/* ---------- 按钮 ---------- */
.abg-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--abg-font-display);
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.abg-cta--primary {
  background: linear-gradient(135deg, var(--abg-orange), #FFB069);
  color: #1A0A00;
  box-shadow: 0 8px 24px rgba(255, 138, 61, 0.28);
}

.abg-cta--primary:hover { transform: translateY(-1px); box-shadow: 0 12px 30px rgba(255, 138, 61, 0.42); }

.abg-cta--ghost { border-color: var(--abg-line); color: var(--abg-ink); }
.abg-cta--ghost:hover { border-color: var(--abg-cyan); color: var(--abg-cyan); }

.abg-copy {
  padding: 5px 12px;
  border: 1px solid rgba(34, 224, 214, 0.45);
  border-radius: 999px;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--abg-cyan);
  transition: background 0.2s ease, color 0.2s ease;
}

.abg-copy:hover { background: rgba(34, 224, 214, 0.16); }

.abg-copy__status {
  min-width: 5em;
  font-size: 0.72rem;
  color: var(--abg-green);
}

/* ---------- 分段切换与筛选 ---------- */
.abg-tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--abg-line);
}

.abg-tab {
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 700;
  color: rgba(244, 241, 232, 0.76);
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.abg-tab:hover { color: var(--abg-ink); background: rgba(34, 224, 214, 0.08); }

.abg-tab[aria-selected="true"] {
  border-color: rgba(34, 224, 214, 0.55);
  color: var(--abg-cyan);
  background: rgba(34, 224, 214, 0.12);
}

.abg-tabpanel { padding-top: 20px; }
.abg-tabpanel[hidden] { display: none; }

.abg-chips { display: flex; flex-wrap: wrap; gap: 8px; }

.abg-chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid var(--abg-line);
  border-radius: 999px;
  font-size: 0.83rem;
  color: rgba(244, 241, 232, 0.82);
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.abg-chip:hover { border-color: rgba(138, 92, 255, 0.6); color: #C9B6FF; }

.abg-chip[aria-pressed="true"] {
  border-color: var(--abg-cyan);
  color: var(--abg-cyan);
  background: rgba(34, 224, 214, 0.13);
}

/* ---------- 面包屑 ---------- */
.abg-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 4px;
  font-size: 0.8rem;
  color: var(--abg-dim);
}

.abg-breadcrumb a { color: rgba(244, 241, 232, 0.8); }
.abg-breadcrumb a:hover { color: var(--abg-cyan); }
.abg-breadcrumb__sep { opacity: 0.5; }
.abg-breadcrumb [aria-current="page"] { color: var(--abg-ink); }

/* ---------- 入场显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 头部 ---------- */
.abg-skip {
  position: absolute;
  left: 16px;
  top: 10px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--abg-orange);
  color: #1A0A00;
  font-weight: 800;
  font-size: 0.85rem;
  transform: translateY(-190%);
  transition: transform 0.2s ease;
}

.abg-skip:focus { transform: none; }

.abg-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(7, 11, 30, 0.97), rgba(7, 11, 30, 0.86));
  border-bottom: 1px solid var(--abg-line);
  backdrop-filter: blur(14px);
}

.abg-header__scan {
  height: 2px;
  background: linear-gradient(90deg, var(--abg-cyan), var(--abg-violet) 45%, var(--abg-orange));
  opacity: 0.85;
}

.abg-header__inner {
  width: var(--abg-shell);
  margin-inline: auto;
  padding: 14px 0 10px;
}

.abg-header__row--brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.abg-brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.abg-brand__text { display: grid; min-width: 0; }

.abg-brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  border: 1px solid rgba(34, 224, 214, 0.6);
  border-radius: 50%;
}

.abg-brand__mark::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--abg-cyan);
  box-shadow: 0 0 16px var(--abg-cyan);
}

.abg-brand__pulse {
  position: absolute;
  inset: -2px;
  border: 1px solid rgba(34, 224, 214, 0.55);
  border-radius: 50%;
  animation: abg-pulse 2.4s ease-out infinite;
}

.abg-brand__name {
  font-family: var(--abg-font-display);
  font-weight: 900;
  font-size: 1.3rem;
  line-height: 1.15;
  letter-spacing: 0.02em;
}

.abg-brand__sub {
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--abg-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.abg-nav__list { display: flex; align-items: center; gap: 4px; }

.abg-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 14px;
  border-radius: var(--abg-radius-sm);
  font-size: 0.95rem;
  color: rgba(244, 241, 232, 0.82);
  transition: color 0.2s ease, background 0.2s ease;
}

.abg-nav__link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 5px;
  height: 2px;
  background: linear-gradient(90deg, var(--abg-cyan), var(--abg-violet));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.abg-nav__link:hover { color: var(--abg-ink); background: rgba(34, 224, 214, 0.08); }
.abg-nav__link:hover::after { transform: scaleX(1); }

.abg-nav__link[aria-current="page"],
.abg-nav__link.is-current {
  color: var(--abg-cyan);
  text-shadow: 0 0 16px rgba(34, 224, 214, 0.55);
}

.abg-nav__link[aria-current="page"]::after,
.abg-nav__link.is-current::after { transform: scaleX(1); }

.abg-navtoggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--abg-line);
  border-radius: 999px;
  font-size: 0.85rem;
  color: rgba(244, 241, 232, 0.9);
}

.abg-navtoggle__bars { display: grid; gap: 4px; width: 16px; }

.abg-navtoggle__bars span {
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.25s ease;
}

.abg-navtoggle[aria-expanded="true"] { border-color: var(--abg-cyan); color: var(--abg-cyan); }
.abg-navtoggle[aria-expanded="true"] .abg-navtoggle__bars span:first-child { transform: translateY(3px) rotate(45deg); }
.abg-navtoggle[aria-expanded="true"] .abg-navtoggle__bars span:last-child { transform: translateY(-3px) rotate(-45deg); }

.abg-rail {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--abg-line);
}

.abg-rail__ticker {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-size: 0.82rem;
  color: var(--abg-dim);
}

.abg-rail__text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.abg-rail__tag {
  flex: 0 0 auto;
  padding: 3px 9px;
  border: 1px solid rgba(138, 92, 255, 0.55);
  border-radius: 999px;
  background: rgba(138, 92, 255, 0.14);
  color: #C9B6FF;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
}

.abg-rail__tools { display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }

.abg-rail__link {
  padding: 7px 13px;
  border: 1px solid var(--abg-line);
  border-radius: 999px;
  font-size: 0.82rem;
  color: rgba(244, 241, 232, 0.85);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.abg-rail__link:hover { border-color: var(--abg-cyan); color: var(--abg-cyan); }

.abg-rail__link--pulse {
  border-color: rgba(34, 224, 214, 0.55);
  color: var(--abg-cyan);
  animation: abg-halo 2.4s ease-in-out infinite;
}

.abg-header .abg-cta { padding: 8px 15px; font-size: 0.8rem; }

.abg-progress { height: 2px; background: rgba(42, 51, 80, 0.78); }

.abg-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(var(--abg-progress, 0));
  transform-origin: left center;
  background: linear-gradient(90deg, var(--abg-cyan), var(--abg-violet), var(--abg-orange));
}

/* ---------- 页脚 ---------- */
.abg-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(40px, 6vw, 90px);
  border-top: 1px solid var(--abg-line);
  background: linear-gradient(180deg, rgba(15, 23, 51, 0.92), rgba(7, 11, 30, 0.99));
}

.abg-footer__inner {
  width: var(--abg-shell);
  margin-inline: auto;
  padding: clamp(34px, 5vw, 64px) 0 26px;
}

.abg-footer__masthead {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(22px, 4vw, 54px);
  padding-bottom: clamp(22px, 3vw, 38px);
  border-bottom: 1px dashed var(--abg-line);
}

.abg-footer__mark {
  display: inline-flex;
  padding: 4px 10px;
  border: 1px solid rgba(34, 224, 214, 0.4);
  border-radius: 6px;
  font-family: var(--abg-font-display);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: 0.3em;
  color: var(--abg-cyan);
}

.abg-footer__name {
  margin-top: 12px;
  font-family: var(--abg-font-display);
  font-weight: 900;
  font-size: 1.4rem;
}

.abg-footer__summary {
  margin-top: 10px;
  max-width: 46ch;
  font-size: 0.92rem;
  color: var(--abg-dim);
}

.abg-footer__summary--note { color: rgba(244, 241, 232, 0.72); font-size: 0.84rem; }

.abg-footer__contact { display: grid; gap: 10px; align-content: start; }

.abg-contactrow {
  display: flex;
  align-items: center;
  gap: 10px 12px;
  padding-bottom: 9px;
  border-bottom: 1px dashed rgba(42, 51, 80, 0.75);
  flex-wrap: wrap;
}

.abg-contactrow--block { align-items: flex-start; flex-wrap: nowrap; }

.abg-contactrow__key {
  flex: 0 0 74px;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--abg-dim);
}

.abg-contactrow__val {
  flex: 1 1 auto;
  font-family: var(--abg-font-mono);
  font-size: 0.9rem;
  color: rgba(244, 241, 232, 0.94);
  word-break: break-word;
}

.abg-footer__tip { font-size: 0.82rem; color: var(--abg-dim); }

.abg-footer__nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 34px);
  padding: clamp(22px, 3vw, 36px) 0;
}

.abg-footer__title {
  margin-bottom: 12px;
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  color: var(--abg-violet);
}

.abg-footer__links { display: grid; gap: 9px; }

.abg-footer__link {
  font-size: 0.92rem;
  color: rgba(244, 241, 232, 0.78);
  transition: color 0.2s ease;
}

.abg-footer__link:hover { color: var(--abg-cyan); }

.abg-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 22px;
  padding-top: 18px;
  border-top: 1px solid var(--abg-line);
  font-size: 0.78rem;
  color: var(--abg-dim);
}

.abg-footer__meta { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.abg-footer__meta--right { color: rgba(244, 241, 232, 0.6); }

/* ---------- 关键帧 ---------- */
@keyframes abg-pulse {
  0% { transform: scale(0.9); opacity: 0.9; }
  70% { transform: scale(1.5); opacity: 0; }
  100% { transform: scale(1.5); opacity: 0; }
}

@keyframes abg-halo {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34, 224, 214, 0.35); }
  55% { box-shadow: 0 0 0 7px rgba(34, 224, 214, 0); }
}

/* ---------- 响应式：平板 ---------- */
@media (max-width: 1080px) {
  .abg-nav__link { padding: 10px 11px; font-size: 0.9rem; }
  .abg-rail__text { white-space: normal; }
  .abg-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 响应式：移动导航断点 ---------- */
@media (max-width: 900px) {
  .abg-navtoggle { display: inline-flex; }

  .abg-nav {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 80;
    width: min(86vw, 360px);
    height: 100%;
    padding: 92px 26px 34px;
    overflow-y: auto;
    background: linear-gradient(180deg, rgba(15, 23, 51, 0.99), rgba(7, 11, 30, 0.99));
    border-left: 1px solid var(--abg-line);
    box-shadow: -26px 0 60px rgba(2, 4, 14, 0.72);
    transform: translateX(103%);
    visibility: hidden;
    transition: transform 0.3s ease, visibility 0.3s ease;
  }

  .abg-nav[data-open] { transform: none; visibility: visible; }

  .abg-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    counter-reset: abgnav;
  }

  .abg-nav__item {
    counter-increment: abgnav;
    border-bottom: 1px dashed rgba(42, 51, 80, 0.85);
  }

  .abg-nav__link {
    display: flex;
    align-items: baseline;
    gap: 14px;
    padding: 16px 2px;
    border-radius: 0;
    font-family: var(--abg-font-display);
    font-size: 1.15rem;
    font-weight: 800;
  }

  .abg-nav__link::before {
    content: "0" counter(abgnav);
    font-family: var(--abg-font-mono);
    font-size: 0.72rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--abg-violet);
  }

  .abg-nav__link::after { left: 2px; right: 2px; bottom: 8px; }
  .abg-nav__link:hover { background: transparent; }

  .abg-footer__masthead { grid-template-columns: minmax(0, 1fr); }
  .abg-footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .abg-grid--2,
  .abg-grid--3,
  .abg-grid--split { grid-template-columns: minmax(0, 1fr); }
  .abg-card--tilt { transform: none; }
  .abg-card--offset { margin-left: 0; }
  .abg-anno {
    writing-mode: horizontal-tb;
    transform: none;
    letter-spacing: 0.16em;
  }
  .abg-anno--tilt { transform: none; }
}

/* ---------- 响应式：手机 ---------- */
@media (max-width: 720px) {
  body { font-size: 16px; }

  .abg-header__inner { padding: 12px 0 10px; }

  .abg-brand__sub { letter-spacing: 0.14em; }

  .abg-rail {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .abg-rail__ticker { display: none; }

  .abg-rail__tools {
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
  }

  .abg-rail__link,
  .abg-header .abg-cta {
    flex: 1 1 auto;
    justify-content: center;
    text-align: center;
    min-height: 40px;
  }

  .abg-contactrow { align-items: flex-start; }
  .abg-contactrow__key { flex: 0 0 100%; }
  .abg-contactrow--block { flex-wrap: wrap; }
  .abg-footer__base { flex-direction: column; align-items: flex-start; }
}

/* ---------- 动效降级 ---------- */
@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;
  }

  .abg-brand__pulse,
  .abg-rail__link--pulse { animation: none; }

  [data-reveal] { opacity: 1; transform: none; }
}