/* ==========================================================================
   PG游戏中心 · 全站共享样式表  /assets/site.css
   夜航仪表盘：深墨蓝底 + 青/金/玫三路径 + 印刷边框与编号标签
   ========================================================================== */

/* ---------- 01 · Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body { margin: 0; }

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, picture, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
hr { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* ---------- 02 · 设计变量 ---------- */
:root {
  /* 底色与面板 */
  --ink:        #0A1424;
  --panel:      #15181D;
  --line:       #2A2F3A;
  --paper:      #F2ECE0;
  --mist:       #A9B4C4;
  --white:      #FFFFFF;

  /* 三条栏目路径色 */
  --cyan:       #35E0D0;
  --amber:      #F5B841;
  --rose:       #FF5470;

  /* 低饱和分区衬底 */
  --teal-deep:  #0E3B3A;
  --gold-deep:  #3A2A10;
  --rose-deep:  #3A1220;

  /* 字体栈 */
  --ff-display: 'Archivo Narrow', 'Barlow Condensed', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
  --ff-body:    'Noto Sans SC', 'Source Han Sans SC', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --ff-mono:    'JetBrains Mono', 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* 字号阶梯 */
  --fs-12: 12px;
  --fs-14: 14px;
  --fs-16: 16px;
  --fs-20: 20px;
  --fs-26: 26px;
  --fs-36: 36px;
  --fs-56: 56px;

  /* 栅格与节奏 */
  --rail:   240px;
  --maxw:   1480px;
  --pad:    clamp(16px, 2.4vw, 36px);
  --sp:     clamp(20px, 3vw, 44px);

  --bd: 1px solid var(--line);
  --t:  160ms cubic-bezier(.22, .61, .36, 1);

  --shadow-panel: 0 18px 40px -30px rgba(0, 0, 0, .95);
}

/* ---------- 03 · 基础排版 ---------- */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(169, 180, 196, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(169, 180, 196, .05) 1px, transparent 1px);
  background-size: 76px 76px;
  background-attachment: fixed;
  color: var(--paper);
  font-family: var(--ff-body);
  font-size: 16.5px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  display: block;
  flex: 1 1 auto;
  min-width: 0;
}

h1, h2, h3, h4, .display {
  font-family: var(--ff-display);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.14;
}

.mono {
  font-family: var(--ff-mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

::selection { background: var(--cyan); color: var(--ink); }

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

/* ---------- 04 · 跳至主内容 ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -72px;
  z-index: 200;
  padding: 11px 20px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .08em;
  border-radius: 2px;
  transition: top var(--t);
}
.skip-link:focus { top: 14px; }

/* ---------- 05 · 页头框架 ---------- */
.site-frame {
  position: relative;
  z-index: 40;
  background: var(--ink);
  border-bottom: var(--bd);
}

.site-frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  pointer-events: none;
  opacity: .55;
  background: linear-gradient(90deg,
    var(--cyan) 0%, var(--cyan) 33.3%,
    var(--amber) 33.3%, var(--amber) 66.6%,
    var(--rose) 66.6%, var(--rose) 100%);
}

/* 阅读进度条 */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 200;
  background: var(--line);
  pointer-events: none;
}
.progress-bar__fill {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--cyan), var(--amber) 55%, var(--rose));
  transition: transform .1s linear;
}

/* 顶部更新横条 */
.frame-update {
  background: var(--panel);
  border-bottom: var(--bd);
}
.frame-update__inner {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 8px var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  flex-wrap: wrap;
}
.frame-update__feed {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: var(--fs-12);
  color: var(--mist);
  letter-spacing: .02em;
  transition: color var(--t);
}
.frame-update__feed:hover { color: var(--paper); }
.frame-update__feed-label {
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--paper);
}
.frame-update__feed-text { color: var(--mist); }

.pulse-dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulse-dot 2.4s ease-out infinite;
}
@keyframes pulse-dot {
  0%   { box-shadow: 0 0 0 0 rgba(53, 224, 208, .55); }
  70%  { box-shadow: 0 0 0 8px rgba(53, 224, 208, 0); }
  100% { box-shadow: 0 0 0 0 rgba(53, 224, 208, 0); }
}

.frame-update__freqs {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.freq-chip {
  --chip: var(--mist);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 9px;
  border: var(--bd);
  border-radius: 2px;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--mist);
}
.freq-chip__code {
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--chip);
  padding-right: 6px;
  border-right: 1px solid var(--line);
}
.freq-chip--p { --chip: var(--cyan); }
.freq-chip--r { --chip: var(--amber); }
.freq-chip--v { --chip: var(--rose); }

/* 品牌 + 导航行 */
.frame-head { background: var(--ink); }
.frame-head__inner {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
  display: grid;
  grid-template-columns: var(--rail) 1fr auto;
  align-items: stretch;
  min-height: 74px;
}

.frame-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-block: 14px;
  padding-right: 26px;
}
.frame-brand__mark {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 2px;
  background: linear-gradient(140deg, var(--cyan) 0%, var(--amber) 62%, var(--rose) 100%);
  color: var(--ink);
  font-family: var(--ff-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -.03em;
}
.frame-brand__text { display: block; line-height: 1.2; }
.frame-brand__name {
  display: block;
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: .02em;
  color: var(--paper);
}
.frame-brand__line {
  display: block;
  margin-top: 3px;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--mist);
}

.frame-nav {
  justify-self: end;
  display: flex;
  align-items: stretch;
}
.frame-nav__list {
  display: flex;
  align-items: stretch;
  height: 100%;
}
.frame-nav__link {
  --line-color: var(--mist);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
  min-height: 74px;
  padding: 12px 17px;
  border-left: var(--bd);
  color: var(--mist);
  transition: background var(--t), color var(--t);
}
.frame-nav__list > li:last-child .frame-nav__link { border-right: var(--bd); }
.frame-nav__idx {
  font-family: var(--ff-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--mist);
  opacity: .7;
  transition: color var(--t), opacity var(--t);
}
.frame-nav__label {
  font-family: var(--ff-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
}
.frame-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--line-color);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t);
}
.frame-nav__link:hover {
  background: rgba(242, 236, 224, .05);
  color: var(--paper);
}
.frame-nav__link:hover::after { transform: scaleX(1); }
.frame-nav__link[aria-current="page"] {
  color: var(--paper);
  background: linear-gradient(180deg, rgba(242, 236, 224, .07), rgba(242, 236, 224, 0));
}
.frame-nav__link[aria-current="page"]::after { transform: scaleX(1); }
.frame-nav__link[aria-current="page"] .frame-nav__idx {
  color: var(--line-color);
  opacity: 1;
}
.frame-nav__link[data-line="p"] { --line-color: var(--cyan); }
.frame-nav__link[data-line="r"] { --line-color: var(--amber); }
.frame-nav__link[data-line="v"] { --line-color: var(--rose); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  align-self: center;
  margin-left: 12px;
  padding: 10px 14px;
  border: var(--bd);
  border-radius: 2px;
  color: var(--mist);
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .14em;
  transition: color var(--t), border-color var(--t), background var(--t);
}
.nav-toggle:hover {
  color: var(--paper);
  border-color: #4A5262;
  background: rgba(242, 236, 224, .05);
}
.nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 16px;
}
.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--t), opacity var(--t);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* ---------- 06 · 页脚 ---------- */
.site-foot {
  margin-top: auto;
  border-top: var(--bd);
  background: var(--panel);
  color: var(--mist);
}

.foot-band {
  background: var(--ink);
  border-bottom: var(--bd);
}
.foot-band__inner {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 14px var(--pad);
  display: flex;
  align-items: center;
  gap: 10px 18px;
  flex-wrap: wrap;
}
.foot-band__title {
  font-family: var(--ff-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--mist);
  padding-right: 18px;
  border-right: var(--bd);
}
.foot-band__list {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.band-chip {
  --chip: var(--mist);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px;
  border: var(--bd);
  border-left: 3px solid var(--chip);
  border-radius: 2px;
  font-size: 13px;
  color: var(--mist);
  transition: background var(--t), color var(--t), transform var(--t);
}
.band-chip:hover {
  background: rgba(242, 236, 224, .05);
  color: var(--paper);
  transform: translateY(-1px);
}
.band-chip__code {
  font-family: var(--ff-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--chip);
}
.band-chip--p { --chip: var(--cyan); }
.band-chip--r { --chip: var(--amber); }
.band-chip--v { --chip: var(--rose); }

.foot-grid {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: var(--sp) var(--pad);
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.5fr;
  gap: clamp(24px, 3vw, 48px);
}
.foot-col { min-width: 0; }
.foot-col + .foot-col {
  border-left: var(--bd);
  padding-left: clamp(16px, 2vw, 28px);
}
.foot-col__title {
  font-family: var(--ff-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--paper);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: var(--bd);
}

.foot-brand {
  display: inline-block;
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: .02em;
  color: var(--paper);
}
.foot-brand__line {
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--mist);
}
.foot-note {
  margin-top: 16px;
  max-width: 30ch;
  font-size: 13px;
  line-height: 1.85;
  color: var(--mist);
}

.foot-list li + li { margin-top: 10px; }
.foot-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14.5px;
  color: var(--mist);
  transition: color var(--t);
}
.foot-link::before {
  content: "";
  width: 6px;
  height: 1px;
  background: currentColor;
  opacity: .55;
  transition: width var(--t);
}
.foot-link:hover { color: var(--paper); }
.foot-link:hover::before { width: 15px; }

.foot-contact li {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 10px;
  padding-block: 8px;
  border-bottom: 1px dashed rgba(42, 47, 58, .95);
  font-size: 14px;
}
.foot-contact li:last-of-type { border-bottom: 0; }
.foot-contact__key {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
  opacity: .8;
  padding-top: 3px;
}
.foot-contact__val {
  color: var(--paper);
  overflow-wrap: anywhere;
}
.foot-contact__note {
  margin-top: 14px;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--mist);
}

.foot-legal {
  background: var(--ink);
  border-top: var(--bd);
}
.foot-legal__inner {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 16px var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--mist);
}
.foot-legal__line { letter-spacing: .02em; }

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: var(--bd);
  border-radius: 2px;
  font-family: var(--ff-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--mist);
  transition: color var(--t), border-color var(--t), background var(--t);
}
.to-top::before {
  content: "↑";
  font-family: var(--ff-mono);
  font-size: 12px;
}
.to-top:hover {
  color: var(--cyan);
  border-color: rgba(53, 224, 208, .5);
  background: rgba(53, 224, 208, .07);
}

/* ---------- 07 · 通用容器与栅格 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
}
.section { padding-block: clamp(36px, 5vw, 76px); }
.section--tight { padding-block: clamp(22px, 3vw, 44px); }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}
.col-2  { grid-column: span 2; }
.col-3  { grid-column: span 3; }
.col-4  { grid-column: span 4; }
.col-5  { grid-column: span 5; }
.col-6  { grid-column: span 6; }
.col-7  { grid-column: span 7; }
.col-12 { grid-column: span 12; }

/* ---------- 08 · 面板与纸张叠层 ---------- */
.panel {
  --accent: var(--line);
  position: relative;
  background: var(--panel);
  border: var(--bd);
  border-radius: 2px;
  padding: clamp(18px, 2.2vw, 28px);
  overflow: hidden;
  box-shadow: var(--shadow-panel);
}
.panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--accent);
}
.panel--p { --accent: var(--cyan); }
.panel--r { --accent: var(--amber); }
.panel--v { --accent: var(--rose); }
.panel--paper {
  --accent: rgba(10, 20, 36, .5);
  background: var(--paper);
  color: var(--ink);
  border-color: rgba(10, 20, 36, .3);
}

.paper-stack {
  position: relative;
  z-index: 0;
}
.paper-stack::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 9px;
  right: -9px;
  bottom: -9px;
  z-index: -1;
  border: var(--bd);
  border-radius: 2px;
  pointer-events: none;
}

/* ---------- 09 · 标题与正文 ---------- */
.eyebrow {
  --accent: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--mist);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
}
.sec-title {
  font-family: var(--ff-display);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.15;
  color: var(--paper);
}
.panel--paper .sec-title { color: var(--ink); }

.prose { max-width: 680px; }
.prose > * + * { margin-top: 1.05em; }
.prose h2,
.prose h3 {
  font-family: var(--ff-display);
  font-weight: 800;
  line-height: 1.2;
}
.prose h2 { font-size: var(--fs-26); }
.prose h3 { font-size: var(--fs-20); }
.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(53, 224, 208, .45);
  transition: border-color var(--t);
}
.prose a:hover { border-bottom-color: var(--cyan); }

/* ---------- 10 · 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border: var(--bd);
  border-radius: 2px;
  background: transparent;
  color: var(--paper);
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  white-space: nowrap;
  transition: background var(--t), color var(--t), border-color var(--t), transform var(--t);
}
.btn:hover {
  background: rgba(242, 236, 224, .06);
  border-color: #4A5262;
  transform: translateY(-1px);
}
.btn--p { border-color: rgba(53, 224, 208, .5); color: var(--cyan); }
.btn--p:hover { background: rgba(53, 224, 208, .12); border-color: var(--cyan); }
.btn--r { border-color: rgba(245, 184, 65, .5); color: var(--amber); }
.btn--r:hover { background: rgba(245, 184, 65, .12); border-color: var(--amber); }
.btn--v { border-color: rgba(255, 84, 112, .5); color: var(--rose); }
.btn--v:hover { background: rgba(255, 84, 112, .12); border-color: var(--rose); }
.btn--paper {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}
.btn--paper:hover { background: var(--white); color: var(--ink); border-color: var(--white); }

/* ---------- 11 · 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}
.breadcrumb a {
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color var(--t), border-color var(--t);
}
.breadcrumb a:hover {
  color: var(--cyan);
  border-bottom-color: rgba(53, 224, 208, .6);
}
.breadcrumb__sep { opacity: .5; }
.breadcrumb [aria-current="page"] { color: var(--paper); }

/* ---------- 12 · 分段切换 ---------- */
.tabs { display: block; }
.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: var(--bd);
}
.tab {
  --accent: var(--cyan);
  position: relative;
  padding: 10px 17px;
  border: 1px solid transparent;
  border-radius: 2px 2px 0 0;
  color: var(--mist);
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  transition: color var(--t), background var(--t), border-color var(--t);
}
.tab:hover {
  color: var(--paper);
  background: rgba(242, 236, 224, .05);
}
.tab[aria-selected="true"] {
  color: var(--paper);
  background: var(--panel);
  border-color: var(--line);
}
.tab[aria-selected="true"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 2px;
  background: var(--accent);
}
.tabpanel {
  padding-top: clamp(18px, 2.4vw, 30px);
  animation: panel-in .12s ease both;
}
.tabpanel[hidden] { display: none; }
@keyframes panel-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- 13 · 图片容器基础规则 ---------- */
.figure {
  position: relative;
  margin: 0;
  border: var(--bd);
  border-radius: 2px;
  background: var(--panel);
  overflow: hidden;
}
.figure__media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  padding: 18px;
  text-align: center;
  color: var(--mist);
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  background-color: var(--ink);
  background-image:
    repeating-linear-gradient(90deg, rgba(169, 180, 196, .1) 0 1px, transparent 1px 30px),
    repeating-linear-gradient(0deg, rgba(169, 180, 196, .1) 0 1px, transparent 1px 30px),
    linear-gradient(140deg, rgba(53, 224, 208, .12), rgba(10, 20, 36, 0) 58%);
}
.figure__media > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.figure__media--wide   { aspect-ratio: 21 / 9; }
.figure__media--tall   { aspect-ratio: 4 / 5; }
.figure__media--square { aspect-ratio: 1 / 1; }
.figure__cap {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 16px;
  border-top: var(--bd);
  font-size: 13px;
  color: var(--mist);
}
.figure__cap .mono { color: var(--paper); font-size: 12px; }

/* ---------- 14 · 滚动显现与计数 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .45s ease, transform .45s cubic-bezier(.22, .61, .36, 1);
}
.has-js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 15 · 响应式：平板与手机 ---------- */
@media (max-width: 1020px) {
  .frame-head__inner {
    grid-template-columns: 1fr auto;
    align-items: center;
    min-height: 66px;
  }
  .frame-brand {
    grid-column: 1;
    padding-right: 0;
  }
  .nav-toggle {
    display: inline-flex;
    grid-column: 2;
    justify-self: end;
  }
  .frame-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    display: none;
    justify-self: stretch;
    background: var(--panel);
    border-top: var(--bd);
  }
  .frame-nav[data-open] { display: block; }
  .frame-nav__list {
    flex-direction: column;
    align-items: stretch;
    height: auto;
  }
  .frame-nav__link {
    min-height: 0;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 14px;
    padding: 14px 18px;
    border-left: 3px solid transparent;
  }
  .frame-nav__list > li:last-child .frame-nav__link { border-right: 0; }
  .frame-nav__list > li + li .frame-nav__link { border-top: var(--bd); }
  .frame-nav__link::after { display: none; }
  .frame-nav__link[aria-current="page"] {
    background: rgba(242, 236, 224, .05);
    border-left-color: var(--line-color);
  }
  .frame-nav__idx { min-width: 26px; }

  .foot-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px 24px;
  }
  .foot-col + .foot-col {
    border-left: 0;
    padding-left: 0;
  }

  .col-2, .col-3, .col-4, .col-5, .col-6, .col-7 { grid-column: span 12; }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
    background-attachment: scroll;
    background-size: 56px 56px;
  }
  .frame-update__feed-text { display: none; }
  .foot-band__title {
    border-right: 0;
    padding-right: 0;
  }
  .foot-grid { grid-template-columns: 1fr; }
  .foot-contact li { grid-template-columns: 46px 1fr; }
  .foot-legal__inner { justify-content: flex-start; }
  .tabs__list { gap: 0; }
  .tab { flex: 1 1 auto; text-align: center; }
}

/* ---------- 16 · 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .has-js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .progress-bar__fill { transition: none; }
  .tabpanel { animation: none; }
}