/* ==========================================================================
   金博娱乐馆 · 共享样式表 /assets/site.css
   展览画册式布局 × 夜间控制台质感
   ========================================================================== */

/* ---------------------------------------------------------------
   1. 变量
   --------------------------------------------------------------- */
:root {
  /* 色板 */
  --ink-900: #0A1728;   /* 深墨蓝 · 全站主背景 */
  --ink-800: #102439;   /* 墨蓝二叠 · 卡片与页脚 */
  --ink-700: #1D3B57;   /* 石板蓝灰 · 边框与分隔 */
  --ink-deep: #0C2630;  /* 深青底 · 交替展区 */
  --mist: #93B7CB;      /* 雾青灰 · 次级正文 */
  --white: #F4F7FB;     /* 亮白 · 主标题与正文 */
  --cyan: #2FD8CE;      /* 霓虹青 · 交互强调 */
  --gold: #C9A24A;      /* 鎏金 · 品牌强调 */
  --amber: #FF8A3D;     /* 暖橙 · 操作路径 */
  --violet: #7E6BFF;    /* 电光紫 · 分类辅助 */
  --paper: #E8E1D2;     /* 纸米色 · 说明牌与引用 */

  /* 形状 */
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  /* 度量 */
  --maxw: 1200px;
  --pad-x: clamp(1.15rem, 4vw, 2.75rem);
  --space-section: clamp(5rem, 9vw, 8.75rem);
  --header-h: 68px;

  /* 字体 */
  --font-display: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Source Han Serif SC", "Noto Serif SC", "Songti SC", Georgia, serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 动效 */
  --ease: cubic-bezier(.2, .7, .3, 1);
}

/* ---------------------------------------------------------------
   2. Reset 与基础
   --------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 44px);
  background: var(--ink-900);
}

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, blockquote, dl, dd, hr, fieldset {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

img, picture, svg, video {
  max-width: 100%;
  height: auto;
}

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

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

body {
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(115% 78% at 88% -12%, rgba(47, 216, 206, .10), transparent 62%),
    radial-gradient(92% 70% at 6% 2%, rgba(126, 107, 255, .13), transparent 58%);
  background-repeat: no-repeat;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  letter-spacing: .002em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#main-content { display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--white);
}

h1 { font-size: clamp(2.6rem, 7vw, 6rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.1rem, 1.8vw, 1.4rem); }

p { text-wrap: pretty; }

a {
  color: var(--cyan);
  text-decoration: none;
  transition: color .18s var(--ease);
}

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

strong, b { font-weight: 700; color: var(--white); }

hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(47, 216, 206, .55), rgba(201, 162, 74, .4), transparent);
}

::selection {
  background: rgba(47, 216, 206, .35);
  color: var(--white);
}

/* 可访问性 */
:focus { outline: none; }

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

.skip-link {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 300;
  padding: .68rem 1.2rem;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  background: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  transform: translate(-50%, -150%);
  transition: transform .2s var(--ease);
}

.skip-link:focus {
  transform: translate(-50%, 0);
  color: var(--ink-900);
}

/* ---------------------------------------------------------------
   3. 按钮
   --------------------------------------------------------------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--white);
  --btn-bd: var(--ink-700);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .7rem 1.15rem;
  border: 1px solid var(--btn-bd);
  border-radius: var(--radius-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-display);
  font-size: .84rem;
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .18s var(--ease), border-color .18s var(--ease),
              color .18s var(--ease), transform .18s var(--ease);
}

.btn:hover { transform: translateY(-1px); color: var(--btn-fg); }
.btn:active { transform: translateY(0); }

.btn--sm { padding: .48rem .85rem; font-size: .78rem; }

.btn--solid {
  --btn-bg: var(--cyan);
  --btn-fg: var(--ink-900);
  --btn-bd: var(--cyan);
}
.btn--solid:hover { --btn-bg: #64e7e0; }

.btn--amber {
  --btn-bg: var(--amber);
  --btn-fg: #22140A;
  --btn-bd: var(--amber);
}
.btn--amber:hover { --btn-bg: #ffa76c; }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--mist);
  --btn-bd: var(--ink-700);
}
.btn--ghost:hover {
  --btn-fg: var(--white);
  --btn-bd: rgba(47, 216, 206, .6);
}

/* ---------------------------------------------------------------
   4. 头部与导航
   --------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 120;
  padding: clamp(.55rem, 1.3vw, .85rem) var(--pad-x);
  transition: padding .24s var(--ease);
}

.site-header[data-scrolled] {
  padding-top: .35rem;
  padding-bottom: .35rem;
}

.site-header__rail {
  width: 100%;
  max-width: 1360px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
}

/* 品牌胶囊 */
.brand-pod {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  flex: none;
  padding: .42rem .95rem .42rem .48rem;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-pill);
  background: rgba(16, 36, 57, .88);
  color: var(--white);
  transition: border-color .2s var(--ease), padding .24s var(--ease), background-color .2s var(--ease);
}

.brand-pod:hover {
  color: var(--white);
  border-color: rgba(47, 216, 206, .5);
  background: rgba(16, 36, 57, .96);
}

.brand-pod__mark {
  flex: none;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(140deg, var(--cyan) 8%, var(--violet) 96%);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .01em;
  transition: width .24s var(--ease), height .24s var(--ease), font-size .24s var(--ease);
}

.brand-pod__meta {
  display: flex;
  flex-direction: column;
  line-height: 1.16;
}

.brand-pod__name {
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 800;
  letter-spacing: -.01em;
}

.brand-pod__note {
  font-family: var(--font-mono);
  font-size: .58rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

/* 栏目胶囊 */
.nav-pod {
  display: flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem .38rem .3rem .5rem;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-pill);
  background: rgba(16, 36, 57, .84);
  box-shadow: 0 22px 46px -34px rgba(0, 0, 0, .95);
  transition: background-color .2s var(--ease), border-color .2s var(--ease), padding .24s var(--ease);
}

.nav-pod__list {
  display: flex;
  align-items: center;
  gap: .1rem;
}

.nav-pod__link {
  position: relative;
  display: inline-block;
  padding: .46rem .72rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--mist);
  white-space: nowrap;
  transition: color .18s var(--ease), background-color .18s var(--ease);
}

.nav-pod__link::after {
  content: "";
  position: absolute;
  left: .72rem;
  right: .72rem;
  bottom: .24rem;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .2s var(--ease);
}

.nav-pod__link:hover {
  color: var(--white);
  background: rgba(47, 216, 206, .10);
}

.nav-pod__link:hover::after { transform: scaleX(1); }

.nav-pod__link[aria-current="page"] {
  color: var(--ink-900);
  background: var(--cyan);
}

.nav-pod__link[aria-current="page"]::after { transform: scaleX(0); }

.nav-pod__actions {
  display: flex;
  align-items: center;
  gap: .45rem;
  margin-left: .15rem;
  padding-left: .5rem;
  border-left: 1px solid var(--ink-700);
}

/* 移动端开关 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: .5rem;
  flex: none;
  padding: .55rem .95rem;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-pill);
  background: rgba(16, 36, 57, .92);
  color: var(--white);
  font-family: var(--font-display);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .06em;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.nav-toggle:hover { border-color: rgba(47, 216, 206, .55); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 16px;
}

.nav-toggle__bars span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform .22s var(--ease), opacity .18s var(--ease), width .22s var(--ease);
}

.nav-toggle__bars span:nth-child(2) { width: 68%; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; transform: scaleX(.2); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 滚动收缩 */
.site-header[data-scrolled] .brand-pod { padding-top: .26rem; padding-bottom: .26rem; }
.site-header[data-scrolled] .brand-pod__mark { width: 28px; height: 28px; font-size: .6rem; }
.site-header[data-scrolled] .nav-pod { padding-top: .2rem; padding-bottom: .2rem; }
.site-header[data-scrolled] .nav-pod__link { padding-top: .36rem; padding-bottom: .36rem; }

/* ---------------------------------------------------------------
   5. 滚动进度条（由 site.js 注入）
   --------------------------------------------------------------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 140;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--gold) 58%, var(--amber));
  pointer-events: none;
}

/* ---------------------------------------------------------------
   6. 页脚
   --------------------------------------------------------------- */
.site-footer {
  position: relative;
  margin-top: var(--space-section);
  background: var(--ink-800);
  border-top: 1px solid var(--ink-700);
  color: var(--mist);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 216, 206, .6), rgba(201, 162, 74, .5), transparent);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.65fr) minmax(0, 1.2fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
  padding-top: clamp(3rem, 6vw, 4.5rem);
  padding-bottom: clamp(2rem, 4vw, 3rem);
}

.site-footer__heading {
  margin-bottom: .9rem;
  font-family: var(--font-display);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  margin-bottom: .9rem;
  color: var(--white);
}

.footer-brand:hover { color: var(--white); }

.footer-brand__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(201, 162, 74, .55);
  border-radius: 8px;
  background: rgba(201, 162, 74, .12);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -.01em;
}

.site-footer__tagline {
  max-width: 24ch;
  font-size: .95rem;
  line-height: 1.7;
  color: var(--paper);
}

.site-footer__service {
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--mist);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.footer-col__heading {
  margin-bottom: .75rem;
  font-family: var(--font-display);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--white);
}

.footer-col__list {
  display: grid;
  gap: .5rem;
}

.footer-col__link {
  position: relative;
  display: inline-block;
  font-family: var(--font-display);
  font-size: .85rem;
  font-weight: 500;
  color: var(--mist);
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}

.footer-col__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transform: translateY(-50%);
  transition: width .2s var(--ease);
}

.footer-col__link:hover {
  color: var(--white);
  padding-left: .6rem;
}

.footer-col__link:hover::before { width: .4rem; }

.contact-list {
  display: grid;
  gap: .7rem;
}

.contact-list__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: .2rem .6rem;
  align-items: center;
  padding-bottom: .6rem;
  border-bottom: 1px dashed rgba(29, 59, 87, .95);
}

.contact-list__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.contact-list__key {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(147, 183, 203, .85);
}

.contact-list__value {
  min-width: 0;
  font-size: .92rem;
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

.contact-list__value.mono {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: -.01em;
}

.contact-list__copy { justify-self: start; }

.contact-list__copy.is-copied {
  border-color: rgba(201, 162, 74, .7);
  color: var(--gold);
  background: rgba(201, 162, 74, .12);
}

.site-footer__legal {
  border-top: 1px solid var(--ink-700);
  background: rgba(10, 23, 40, .62);
}

.site-footer__legal-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem 1.5rem;
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: rgba(147, 183, 203, .78);
}

/* ---------------------------------------------------------------
   7. 布局容器与展区
   --------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.container--narrow { max-width: 820px; }
.container--wide { max-width: 1360px; }

.page-top { padding-top: clamp(6rem, 12vw, 9rem); }

.section {
  position: relative;
  padding-block: var(--space-section);
}

.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }

.section--panel {
  background: var(--ink-800);
  border-block: 1px solid var(--ink-700);
}

.section--alt {
  background: var(--ink-deep);
  border-block: 1px solid var(--ink-700);
}

.section-head {
  display: grid;
  gap: .65rem;
  max-width: 64ch;
  margin-bottom: clamp(2rem, 4vw, 3.2rem);
}

.section-head__code {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.section-head__code::before {
  content: "";
  width: 34px;
  height: 1px;
  background: currentColor;
  opacity: .75;
}

.section-head__title { font-size: clamp(1.5rem, 3vw, 2.4rem); }

.section-head__note {
  font-size: .95rem;
  line-height: 1.75;
  color: var(--mist);
}

.label {
  font-family: var(--font-display);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.mono { font-family: var(--font-mono); }

.lead {
  max-width: 48ch;
  font-size: clamp(1.02rem, 1.5vw, 1.24rem);
  line-height: 1.72;
  color: var(--white);
}

.rule { margin-block: clamp(2rem, 4vw, 3rem); }

/* 两栏索引布局 */
.layout-index {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 224px;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
}

.anchor-rail {
  position: sticky;
  top: calc(var(--header-h) + 2.5rem);
  display: grid;
  gap: .1rem;
  padding-left: 1rem;
  border-left: 1px solid var(--ink-700);
}

.anchor-rail__link {
  position: relative;
  display: block;
  padding: .34rem 0;
  font-family: var(--font-display);
  font-size: .78rem;
  font-weight: 600;
  color: var(--mist);
  transition: color .18s var(--ease);
}

.anchor-rail__link::before {
  content: "";
  position: absolute;
  left: -1rem;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .2s var(--ease);
}

.anchor-rail__link:hover { color: var(--white); }

.anchor-rail__link[aria-current="true"] { color: var(--cyan); }
.anchor-rail__link[aria-current="true"]::before { transform: scaleY(1); }

/* ---------------------------------------------------------------
   8. 内容组件
   --------------------------------------------------------------- */
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 258px), 1fr));
  gap: clamp(1rem, 2.2vw, 1.6rem);
}

.card-stack {
  display: grid;
  gap: clamp(1rem, 2vw, 1.5rem);
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  overflow: hidden;
  padding: clamp(1.1rem, 2vw, 1.5rem);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  background: var(--ink-800);
  color: var(--mist);
  transition: border-color .2s var(--ease), transform .2s var(--ease), background-color .2s var(--ease);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(47, 216, 206, 0));
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .22s var(--ease);
}

.card:hover {
  border-color: rgba(47, 216, 206, .45);
  transform: translateY(-3px);
}

.card:hover::before { transform: scaleY(1); }

.card--alt { background: var(--ink-deep); }

.card--paper {
  border-color: rgba(16, 27, 39, .2);
  background: var(--paper);
  color: rgba(14, 24, 36, .78);
}

.card--paper .card__code { color: #7A6528; }
.card--paper .card__title { color: #0C1725; }
.card--paper .card__desc { color: rgba(14, 24, 36, .78); }

.card__code {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--white);
}

.card__desc {
  font-size: .92rem;
  line-height: 1.72;
  color: var(--mist);
}

.card__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin-top: auto;
  padding-top: .5rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .28rem .72rem;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-pill);
  background: rgba(29, 59, 87, .35);
  font-family: var(--font-display);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .05em;
  line-height: 1.5;
  color: var(--mist);
  white-space: nowrap;
  transition: border-color .18s var(--ease), color .18s var(--ease), background-color .18s var(--ease);
}

button.chip { cursor: pointer; }
button.chip:hover { border-color: currentColor; }

.chip--cyan {
  border-color: rgba(47, 216, 206, .5);
  background: rgba(47, 216, 206, .10);
  color: var(--cyan);
}

.chip--gold {
  border-color: rgba(201, 162, 74, .55);
  background: rgba(201, 162, 74, .10);
  color: var(--gold);
}

.chip--amber {
  border-color: rgba(255, 138, 61, .5);
  background: rgba(255, 138, 61, .10);
  color: var(--amber);
}

.chip--violet {
  border-color: rgba(126, 107, 255, .55);
  background: rgba(126, 107, 255, .13);
  color: #B6ACFF;
}

.chip__dot {
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.plaque {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  gap: .22rem;
  max-width: 36ch;
  padding: .58rem .9rem;
  border: 1px solid rgba(16, 27, 39, .18);
  background: var(--paper);
  color: #101B27;
  box-shadow: 6px 6px 0 -2px rgba(201, 162, 74, .26), 11px 11px 0 -4px rgba(232, 225, 210, .10);
  font-family: var(--font-display);
  font-size: .74rem;
  line-height: 1.5;
}

.plaque__code {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: #6C5A2C;
}

.plaque__text { color: #1C2733; }

.figure {
  display: grid;
  gap: .8rem;
  margin: 0;
}

.figure__frame {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  background:
    radial-gradient(120% 100% at 18% 0%, rgba(47, 216, 206, .18), transparent 56%),
    radial-gradient(95% 95% at 92% 100%, rgba(126, 107, 255, .22), transparent 62%),
    var(--ink-deep);
}

.figure__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(147, 183, 203, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(147, 183, 203, .08) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.figure__frame img,
.figure__frame picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure__frame--portrait { aspect-ratio: 3 / 4; }
.figure__frame--square { aspect-ratio: 1 / 1; }
.figure__frame--wide { aspect-ratio: 21 / 9; }
.figure__frame--phone { aspect-ratio: 9 / 19; max-width: 300px; }

.figure__badge {
  position: absolute;
  left: .85rem;
  bottom: .85rem;
  z-index: 2;
}

.figure figcaption {
  font-family: var(--font-display);
  font-size: .74rem;
  letter-spacing: .06em;
  line-height: 1.6;
  color: var(--mist);
}

.stat { display: grid; gap: .2rem; }

.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--white);
}

.stat__label {
  font-family: var(--font-display);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.callout {
  display: grid;
  gap: .45rem;
  padding: 1rem 1.2rem;
  border-left: 2px solid var(--amber);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(255, 138, 61, .08);
  color: var(--paper);
  font-size: .92rem;
  line-height: 1.72;
}

.callout__label {
  font-family: var(--font-display);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--amber);
}

.prose {
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--mist);
}

.prose > * + * { margin-top: 1.05em; }

.prose h2,
.prose h3 {
  margin-top: 2em;
  color: var(--white);
}

.prose ul,
.prose ol {
  display: grid;
  gap: .5rem;
  padding-left: 1.2rem;
}

.prose ul { list-style: none; padding-left: .1rem; }

.prose ul li {
  position: relative;
  padding-left: 1rem;
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 7px;
  height: 1px;
  background: var(--cyan);
}

.prose ol { list-style: decimal; }
.prose ol li::marker { color: var(--cyan); font-family: var(--font-mono); }

.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(47, 216, 206, .4);
}

.prose a:hover { color: var(--gold); border-bottom-color: rgba(201, 162, 74, .6); }

.prose code {
  padding: .12em .42em;
  border-radius: 3px;
  background: rgba(232, 225, 210, .08);
  font-family: var(--font-mono);
  font-size: .85em;
  color: var(--paper);
}

.prose blockquote {
  padding: 1rem 1.2rem;
  border-left: 2px solid var(--gold);
  background: rgba(201, 162, 74, .07);
  color: var(--paper);
  font-size: .95rem;
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: rgba(147, 183, 203, .8);
}

.crumbs a { color: var(--mist); }
.crumbs a:hover { color: var(--cyan); }

.crumbs__sep { color: rgba(147, 183, 203, .45); }

.crumbs [aria-current="page"] { color: var(--paper); }

/* 可展开内容组 */
.expand-list { display: grid; gap: .7rem; }

.expand {
  overflow: hidden;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  background: var(--ink-800);
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.expand[data-open] { border-color: rgba(47, 216, 206, .45); }
.expand[data-open] .expand__btn { color: var(--cyan); }

.expand__btn {
  display: flex;
  align-items: flex-start;
  gap: .9rem;
  width: 100%;
  padding: 1rem 1.15rem;
  color: var(--white);
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 700;
  line-height: 1.5;
  text-align: left;
  transition: color .2s var(--ease);
}

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

.expand__code {
  flex: none;
  padding-top: .18rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--cyan);
}

.expand__sign {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: .34rem;
  margin-left: auto;
}

.expand__sign::before,
.expand__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .24s var(--ease);
}

.expand__sign::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

.expand__sign::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
}

.expand[data-open] .expand__sign::after { transform: translateX(-50%) scaleY(0); }

.expand__panel {
  height: 0;
  overflow: hidden;
  transition: height .24s var(--ease);
}

.expand__panel-inner {
  padding: 0 1.15rem 1.15rem 3.1rem;
  font-size: .92rem;
  line-height: 1.78;
  color: var(--mist);
}

/* 显现 */
html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .26s var(--ease), transform .26s var(--ease);
}

html.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------------------------------------------------------------
   9. 响应式
   --------------------------------------------------------------- */
@media (max-width: 1199px) and (min-width: 1024px) {
  .nav-pod__link { padding-inline: .5rem; font-size: .78rem; }
  .nav-pod__actions .btn--ghost { display: none; }
}

@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; }

  .nav-pod {
    position: fixed;
    left: max(12px, env(safe-area-inset-left));
    right: max(12px, env(safe-area-inset-right));
    bottom: max(14px, env(safe-area-inset-bottom));
    z-index: 130;
    display: grid;
    gap: .85rem;
    padding: .9rem;
    border-radius: var(--radius-lg);
    background: rgba(12, 28, 45, .97);
    box-shadow: 0 -22px 60px -34px rgba(0, 0, 0, .98);
    transform: translateY(calc(100% + 46px));
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform .28s var(--ease), opacity .22s var(--ease), visibility .28s;
  }

  .nav-pod[data-open] {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-pod__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .4rem;
  }

  .nav-pod__link {
    display: block;
    padding: .82rem .9rem;
    border-radius: 14px;
    background: rgba(29, 59, 87, .38);
    font-size: .88rem;
    color: var(--white);
  }

  .nav-pod__link::after { display: none; }

  .nav-pod__link[aria-current="page"] {
    background: var(--cyan);
    color: var(--ink-900);
  }

  .nav-pod__actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .5rem;
    margin-left: 0;
    padding-left: 0;
    border-left: 0;
  }

  .nav-pod__actions .btn { width: 100%; }
  .nav-pod__actions .btn--ghost { display: inline-flex; }

  .layout-index { grid-template-columns: minmax(0, 1fr); }

  .anchor-rail {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    padding: 1rem 0 0;
    border-left: 0;
    border-top: 1px solid var(--ink-700);
  }

  .anchor-rail__link {
    padding: .3rem .75rem;
    border: 1px solid var(--ink-700);
    border-radius: var(--radius-pill);
    background: rgba(29, 59, 87, .3);
    font-size: .74rem;
  }

  .anchor-rail__link::before { display: none; }

  .anchor-rail__link[aria-current="true"] {
    border-color: rgba(47, 216, 206, .55);
    background: rgba(47, 216, 206, .12);
  }

  .site-footer__inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .site-footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; }
  .site-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .site-footer__legal-inner { flex-direction: column; align-items: flex-start; }
  .expand__panel-inner { padding-left: 1.15rem; }
  .expand__code { display: none; }
}

@media (max-width: 420px) {
  .footer-cols { grid-template-columns: minmax(0, 1fr); }
  .nav-pod__actions { grid-template-columns: minmax(0, 1fr); }
}

/* ---------------------------------------------------------------
   10. 降低动效
   --------------------------------------------------------------- */
@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;
  }

  .site-header[data-scrolled] .brand-pod__mark { transition: none; }

  html.has-js [data-reveal],
  html.has-js [data-reveal].is-visible {
    opacity: 1;
    transform: none;
  }
}