/* ==========================================================================
   新葡萄指南 · 共享样式表 /assets/site.css
   深紫数据藤蔓 · 左侧品牌轨道 + 右上悬浮胶囊
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  --rail-w: 104px;
}

html[data-scrolled="true"] { --rail-w: 74px; }

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, pre { margin: 0; }

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

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

button { font: inherit; color: inherit; background: none; border: 0; }

a { color: inherit; }

hr { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --ink-950: #08040F;
  --ink-900: #140A2B;
  --panel: #241344;
  --line: #3D2A6B;
  --lime: #B8FF3F;
  --amber: #FF9B45;
  --paper: #F3EFFF;
  --paper-line: #DCD3F5;
  --text: #EDE6FF;
  --text-dim: #A99BCB;
  --text-on-paper: #1B1030;
  --text-dim-on-paper: #4A3A6E;

  /* 字体 */
  --font-display: "Sora", "Space Grotesk", "Noto Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace,
    SFMono-Regular, Menlo, Consolas, monospace;

  /* 尺寸 */
  --shell-max: 1360px;
  --gutter: clamp(20px, 4vw, 64px);
  --section-gap: clamp(56px, 7vw, 104px);
  --radius: 16px;
  --ease: cubic-bezier(.2, .7, .2, 1);

  /* 阴影 */
  --shadow-deep: 0 26px 54px -36px rgba(0, 0, 0, .96);
}

/* ---------- 3. 中文排版与页面底 ---------- */
body {
  min-height: 100vh;
  padding-left: var(--rail-w);
  background-color: var(--ink-950);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: padding-left 200ms var(--ease);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(720px 520px at 82% -8%, rgba(184, 255, 63, .085), transparent 62%),
    radial-gradient(660px 460px at 8% 96%, rgba(255, 155, 69, .07), transparent 64%),
    linear-gradient(180deg, #08040F 0%, #140A2B 58%, #08040F 100%);
}

.xg-main {
  position: relative;
  z-index: 1;
}

::selection {
  background: rgba(184, 255, 63, .28);
  color: #FFFFFF;
}

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 4. 通用排版工具 ---------- */
.xg-display {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: balance;
}

.xg-h2 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.4rem, 2.6vw, 2.2rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
  text-wrap: balance;
}

.xg-h3 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.45;
  color: var(--text);
}

.xg-lede {
  font-size: clamp(1rem, 1.25vw, 1.125rem);
  line-height: 1.85;
  color: var(--text-dim);
  max-width: 62ch;
}

.xg-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--lime);
  text-transform: uppercase;
}

.xg-eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
  opacity: .8;
}

.xg-num {
  font-variant-numeric: tabular-nums;
  font-family: var(--font-mono);
}

.xg-sr {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 5. 容器与骨架 ---------- */
.xg-wrap {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.xg-skip {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 300;
  padding: 10px 20px;
  border-radius: 0 0 12px 12px;
  background: var(--lime);
  color: var(--ink-950);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transform: translate(-50%, -140%);
  transition: transform 180ms var(--ease);
}

.xg-skip:focus {
  transform: translate(-50%, 0);
}

.xg-top {
  position: relative;
  z-index: 90;
}

/* ---------- 6. 左侧品牌轨道 ---------- */
.xg-rail {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: var(--rail-w);
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 22px 8px 26px;
  background:
    linear-gradient(180deg, rgba(36, 19, 68, .94), rgba(20, 10, 43, .97));
  border-right: 1px solid var(--line);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 14px 0 40px -34px rgba(0, 0, 0, .95);
  transition: width 200ms var(--ease), padding 200ms var(--ease);
  overflow: visible;
}

.xg-rail__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  flex: 0 0 auto;
}

.xg-rail__mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: #0A0514;
  background: radial-gradient(circle at 32% 26%, #E8FFA4, var(--lime) 58%, #8FD414 100%);
  box-shadow:
    0 0 0 1px rgba(184, 255, 63, .55),
    0 0 22px rgba(184, 255, 63, .38);
  transition: width 200ms var(--ease), height 200ms var(--ease), font-size 200ms var(--ease);
}

.xg-rail__wordmark {
  max-height: 240px;
  overflow: hidden;
  writing-mode: vertical-rl;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .3em;
  color: var(--text);
  opacity: 1;
  transition: opacity 180ms var(--ease), max-height 200ms var(--ease);
}

html[data-scrolled="true"] .xg-rail__wordmark {
  max-height: 0;
  opacity: 0;
}

html[data-scrolled="true"] .xg-rail__mark {
  width: 34px;
  height: 34px;
  font-size: 13px;
}

.xg-rail__nodes {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-block: auto;
}

.xg-rail__node {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  text-decoration: none;
}

.xg-rail__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  transition: background 180ms var(--ease), border-color 180ms var(--ease),
    box-shadow 180ms var(--ease), transform 180ms var(--ease);
}

.xg-rail__node:hover .xg-rail__dot,
.xg-rail__node:focus-visible .xg-rail__dot {
  border-color: var(--lime);
  transform: scale(1.25);
}

.xg-rail__node[aria-current="page"] .xg-rail__dot {
  background: var(--lime);
  border-color: var(--lime);
  box-shadow: 0 0 12px rgba(184, 255, 63, .65);
}

.xg-rail__node-label {
  position: absolute;
  left: calc(100% + 6px);
  top: 50%;
  z-index: 20;
  padding: 4px 11px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translate(-6px, -50%);
  transition: opacity 160ms var(--ease), transform 160ms var(--ease);
}

.xg-rail__node:hover .xg-rail__node-label,
.xg-rail__node:focus-visible .xg-rail__node-label {
  opacity: 1;
  transform: translate(0, -50%);
}

.xg-rail__node[aria-current="page"] .xg-rail__node-label {
  color: var(--lime);
}

.xg-rail__spine {
  position: absolute;
  top: 0;
  right: -1px;
  width: 2px;
  height: 0;
  background: linear-gradient(180deg, var(--lime), rgba(184, 255, 63, .15));
  box-shadow: 0 0 12px rgba(184, 255, 63, .55);
  transition: height 120ms linear;
}

.xg-rail__meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--text-dim);
  opacity: .75;
  white-space: nowrap;
}

html[data-scrolled="true"] .xg-rail__meta {
  opacity: 0;
}

/* ---------- 7. 悬浮胶囊导航 ---------- */
.xg-dock {
  position: fixed;
  top: 20px;
  right: 24px;
  z-index: 110;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 8px 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(36, 19, 68, .84);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    0 22px 48px -30px rgba(0, 0, 0, .95),
    inset 0 1px 0 rgba(255, 255, 255, .05);
  transition: padding 180ms var(--ease), background 180ms var(--ease);
}

html[data-scrolled="true"] .xg-dock {
  padding: 6px 6px 6px 8px;
  background: rgba(20, 10, 43, .93);
}

.xg-docknav {
  display: flex;
  align-items: center;
}

.xg-docknav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.xg-navlink {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  transition: background 180ms var(--ease), color 180ms var(--ease),
    transform 180ms var(--ease);
}

.xg-navlink:hover {
  color: var(--text);
  background: rgba(184, 255, 63, .09);
  transform: translateY(-1px);
}

.xg-navlink__glyph {
  font-family: var(--font-mono);
  font-size: 11px;
  opacity: .7;
}

.xg-navlink__text {
  max-width: 7em;
  overflow: hidden;
  transition: max-width 180ms var(--ease), opacity 180ms var(--ease);
}

html[data-scrolled="true"] .xg-navlink__text {
  max-width: 0;
  opacity: 0;
}

html[data-scrolled="true"] .xg-navlink[aria-current="page"] .xg-navlink__text {
  max-width: 8em;
  opacity: 1;
}

.xg-navlink[aria-current="page"] {
  background: var(--lime);
  color: var(--ink-950);
  font-weight: 700;
  box-shadow: 0 6px 20px -12px rgba(184, 255, 63, .95);
}

.xg-navlink[aria-current="page"] .xg-navlink__glyph {
  opacity: 1;
}

.xg-dock__tools {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-left: 10px;
  border-left: 1px solid var(--line);
}

.xg-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 999px;
  border: 1px solid rgba(184, 255, 63, .6);
  background: linear-gradient(135deg, #CBFF66, #9BE81F);
  color: #0A0514;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 10px 26px -16px rgba(184, 255, 63, .95);
  transition: transform 160ms var(--ease), box-shadow 160ms var(--ease);
}

.xg-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px -16px rgba(184, 255, 63, 1);
}

.xg-cta__glyph {
  font-size: 10px;
  line-height: 1;
}

.xg-tool {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(8, 4, 15, .5);
  color: var(--text-dim);
  font-size: 15px;
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.xg-tool:hover {
  color: var(--lime);
  border-color: rgba(184, 255, 63, .55);
}

.xg-docktoggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(8, 4, 15, .5);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.xg-docktoggle[aria-expanded="true"] {
  color: var(--lime);
  border-color: rgba(184, 255, 63, .5);
}

.xg-docktoggle__bars {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: background 180ms var(--ease);
}

.xg-docktoggle__bars::before,
.xg-docktoggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 180ms var(--ease);
}

.xg-docktoggle__bars::before { top: -5px; }
.xg-docktoggle__bars::after { top: 5px; }

.xg-docktoggle[aria-expanded="true"] .xg-docktoggle__bars { background: transparent; }
.xg-docktoggle[aria-expanded="true"] .xg-docktoggle__bars::before { transform: translateY(5px) rotate(45deg); }
.xg-docktoggle[aria-expanded="true"] .xg-docktoggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 8. 页脚 ---------- */
.xg-foot {
  position: relative;
  z-index: 1;
  margin-top: clamp(72px, 9vw, 140px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, #0C0620 0%, #140A2B 42%, #0A0518 100%);
}

.xg-foot::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background:
    linear-gradient(90deg,
      var(--lime) 0 20%,
      rgba(184, 255, 63, 0) 20% 30%,
      var(--amber) 30% 44%,
      rgba(255, 155, 69, 0) 44% 100%);
  opacity: .85;
}

.xg-foot__inner {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(44px, 5vw, 72px) var(--gutter) 0;
  display: grid;
  grid-template-columns: minmax(240px, 1.35fr) minmax(0, 2.6fr);
  gap: clamp(32px, 4vw, 64px);
}

.xg-foot__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.xg-foot__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--text);
  text-decoration: none;
}

.xg-foot__logo::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 14px rgba(184, 255, 63, .7);
}

.xg-foot__line {
  margin-top: 16px;
  max-width: 32ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-dim);
}

.xg-foot__mono {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--lime);
  opacity: .8;
}

.xg-foot__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(20px, 2.6vw, 40px);
}

.xg-foot__col h2 {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--lime);
}

.xg-foot__col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.xg-foot__col a {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.xg-foot__col a:hover {
  color: var(--text);
}

.xg-foot__quiet {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-dim);
  opacity: .8;
}

.xg-foot__base {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  margin-top: clamp(36px, 4vw, 60px);
  padding: 24px var(--gutter) 44px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  line-height: 1.9;
  color: var(--text-dim);
}

.xg-foot__contact a,
.xg-foot__legal a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 255, 63, .35);
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.xg-foot__contact a:hover,
.xg-foot__legal a:hover {
  color: var(--lime);
  border-color: var(--lime);
}

.xg-foot__sep {
  color: var(--line);
  margin-inline: 6px;
}

.xg-foot__legal {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}

.xg-foot__icp {
  color: var(--text-dim);
}

.xg-foot__since {
  color: var(--text-dim);
  opacity: .8;
}

/* ---------- 9. 通用组件 ---------- */
.xg-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: clamp(28px, 4vw, 52px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-dim);
}

.xg-breadcrumb li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.xg-breadcrumb li + li::before {
  content: "/";
  color: var(--line);
}

.xg-breadcrumb a {
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.xg-breadcrumb a:hover {
  color: var(--lime);
}

.xg-breadcrumb [aria-current="page"] {
  color: var(--text);
}

.xg-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border-radius: 7px;
  border: 1px solid var(--line);
  background: rgba(8, 4, 15, .42);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.4;
  color: var(--text-dim);
}

.xg-tag--lime {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink-950);
  font-weight: 700;
}

.xg-tag--amber {
  background: var(--amber);
  border-color: var(--amber);
  color: #2A1400;
  font-weight: 700;
}

.xg-card {
  position: relative;
  padding: clamp(20px, 2.4vw, 30px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(36, 19, 68, .94), rgba(20, 10, 43, .88));
  box-shadow: var(--shadow-deep), inset 0 1px 0 rgba(255, 255, 255, .04);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.xg-card:hover {
  transform: translateY(-2px);
  border-color: rgba(184, 255, 63, .42);
}

.xg-paper {
  padding-block: clamp(44px, 6vw, 88px);
  background: var(--paper);
  color: var(--text-on-paper);
  border-top: 1px solid var(--paper-line);
  border-bottom: 1px solid var(--paper-line);
}

.xg-paper .xg-display,
.xg-paper .xg-h2,
.xg-paper .xg-h3 {
  color: var(--text-on-paper);
}

.xg-paper .xg-lede {
  color: var(--text-dim-on-paper);
}

.xg-paper .xg-eyebrow {
  color: #5A3E9E;
}

.xg-paper .xg-tag {
  border-color: var(--paper-line);
  background: rgba(255, 255, 255, .7);
  color: var(--text-dim-on-paper);
}

.xg-paper .xg-card {
  border-color: var(--paper-line);
  background: #FFFFFF;
  box-shadow: 0 18px 40px -30px rgba(27, 16, 48, .6);
}

.xg-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(8, 4, 15, .45);
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform 160ms var(--ease), border-color 160ms var(--ease),
    background 160ms var(--ease), color 160ms var(--ease);
}

.xg-btn:hover {
  transform: translateY(-1px);
  border-color: rgba(184, 255, 63, .55);
}

.xg-btn--lime {
  border-color: rgba(184, 255, 63, .6);
  background: linear-gradient(135deg, #CBFF66, #9BE81F);
  color: #0A0514;
  font-weight: 700;
  box-shadow: 0 10px 26px -16px rgba(184, 255, 63, .95);
}

.xg-btn--ghost {
  background: transparent;
  color: var(--lime);
  border-color: rgba(184, 255, 63, .4);
}

/* ---------- 10. 图片容器基础规则 ---------- */
.xg-figure {
  position: relative;
  display: block;
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(36, 19, 68, .92), rgba(20, 10, 43, .92));
  box-shadow: var(--shadow-deep);
  overflow: hidden;
}

.xg-figure__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.xg-figure__media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.xg-figure__cap {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.6;
  color: var(--text-dim);
}

.xg-figure--wide .xg-figure__media { aspect-ratio: 21 / 9; }
.xg-figure--tall .xg-figure__media { aspect-ratio: 4 / 5; }
.xg-figure--square .xg-figure__media { aspect-ratio: 1 / 1; }

.xg-figure--flow .xg-figure__media {
  background-image:
    radial-gradient(circle at 22% 30%, rgba(184, 255, 63, .22), transparent 26%),
    radial-gradient(circle at 74% 66%, rgba(255, 155, 69, .18), transparent 24%),
    repeating-linear-gradient(115deg,
      rgba(61, 42, 107, .55) 0 1px,
      transparent 1px 22px);
}

/* ---------- 11. 显现动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 320ms var(--ease) var(--reveal-delay, 0ms),
    transform 320ms var(--ease) var(--reveal-delay, 0ms);
}

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

@keyframes xg-pulse {
  0%, 100% { opacity: .45; }
  50% { opacity: 1; }
}

.xg-beacon {
  animation: xg-pulse 1.2s var(--ease) infinite;
}

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1180px) {
  .xg-foot__inner { grid-template-columns: 1fr; }
  .xg-foot__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1024px) {
  .xg-cta__text { display: none; }
  .xg-cta { padding: 11px 13px; }
}

@media (max-width: 860px) {
  html,
  html[data-scrolled="true"] { --rail-w: 0px; }

  body {
    padding-left: 0;
    padding-top: 46px;
    padding-bottom: 96px;
    font-size: 16px;
    transition: none;
  }

  /* 顶部细条 */
  .xg-rail {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 46px;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 10px;
    padding: 0 16px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    background: rgba(20, 10, 43, .96);
  }

  .xg-rail__brand {
    flex-direction: row;
    gap: 9px;
  }

  .xg-rail__mark {
    width: 26px;
    height: 26px;
    font-size: 12px;
  }

  .xg-rail__wordmark {
    writing-mode: horizontal-tb;
    max-height: none;
    font-size: 13px;
    letter-spacing: .18em;
  }

  html[data-scrolled="true"] .xg-rail__wordmark { opacity: 1; max-height: none; }
  html[data-scrolled="true"] .xg-rail__mark { width: 26px; height: 26px; font-size: 12px; }

  .xg-rail__nodes,
  .xg-rail__spine,
  .xg-rail__meta { display: none; }

  /* 底部浮岛 */
  .xg-dock {
    top: auto;
    right: 12px;
    bottom: 12px;
    left: 12px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 8px;
    border-radius: 20px;
    background: rgba(20, 10, 43, .95);
  }

  html[data-scrolled="true"] .xg-dock {
    padding: 8px;
    background: rgba(20, 10, 43, .95);
  }

  .xg-docknav {
    flex-direction: column;
    align-items: stretch;
  }

  .xg-docktoggle { display: inline-flex; }

  .xg-docknav__list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--line);
  }

  .xg-docknav[data-open="true"] .xg-docknav__list { display: flex; }

  .xg-navlink {
    justify-content: flex-start;
    padding: 12px 14px;
    border-radius: 12px;
    font-size: 15px;
  }

  html[data-scrolled="true"] .xg-navlink__text,
  .xg-navlink__text {
    max-width: 20em;
    opacity: 1;
  }

  .xg-dock__tools { display: none; }

  .xg-foot__grid { grid-template-columns: 1fr; }
  .xg-foot__base { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .xg-display { font-size: clamp(2rem, 11vw, 3rem); }
  .xg-foot__inner { padding-top: 40px; }
}

/* ---------- 13. 偏好设置 ---------- */
@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;
  }

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

  .xg-rail__spine { transition: none; }
}

@media print {
  .xg-rail,
  .xg-dock,
  .xg-skip { display: none !important; }
  body { padding: 0; background: #FFFFFF; color: #1B1030; }
}