/* ============================================================
   星枢Ai (StarPivot.ai) 多页面版 - 共享样式
   设计语言提取自 hz.lk888.ai 原站 (深色主题 + cyan 强调色)
   ============================================================ */

:root {
  /* 主题色板 (提取自原站 :root 变量) */
  --bg-deep: rgb(6, 8, 12);
  --bg-page: rgb(15, 15, 18);
  --bg-page-2: rgb(12, 12, 15);
  --bg-panel: rgb(20, 20, 25);
  --bg-card: rgb(28, 30, 34);
  --bg-card-2: rgb(30, 31, 37);
  --bg-input: rgb(27, 28, 33);
  --bg-hover: rgb(35, 37, 42);
  --bg-elevated: rgb(41, 43, 51);

  /* 强调色 (原站启动屏/加载动画用 cyan) */
  --accent: #22d3ee;
  --accent-deep: #0891b2;
  --accent-glow: rgba(34, 211, 238, 0.25);
  --accent-soft: rgba(34, 211, 238, 0.08);

  /* 文字 */
  --text-primary: #f2f4f8;
  --text-secondary: #a3a9b8;
  --text-muted: #6b7280;
  --text-on-accent: #04262e;

  /* 边框 */
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  /* 圆角 & 阴影 */
  --radius: 12px;
  --radius-lg: 16px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 40px var(--accent-glow);

  /* 布局 */
  --header-h: 64px;
  --container: 1200px;

  /* 字体 (提取自原站) */
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "PingFang SC", "HarmonyOS Sans", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* 背景光晕 (仿原站 gradient-flow) */
.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 60% 40% at 20% 0%, rgba(34, 211, 238, 0.08), transparent 60%),
    radial-gradient(ellipse 50% 35% at 85% 15%, rgba(99, 102, 241, 0.07), transparent 60%),
    var(--bg-page);
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(15, 15, 18, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* Logo */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #6366f1);
  display: grid;
  place-items: center;
  color: var(--text-on-accent);
  font-weight: 900;
  font-size: 17px;
  box-shadow: 0 0 20px var(--accent-glow);
  flex-shrink: 0;
}

.brand-name {
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.02em;
}

.brand-name .brand-en {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  display: block;
  line-height: 1.2;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 主导航 */
.main-nav ul {
  display: flex;
  gap: 4px;
}

.main-nav a {
  display: block;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.main-nav a:hover { color: var(--text-primary); background: var(--bg-hover); }

.main-nav a.active {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 600;
}

/* 头部右侧 */
.header-actions { display: flex; align-items: center; gap: 12px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #06b6d4);
  color: var(--text-on-accent);
  box-shadow: 0 2px 14px var(--accent-glow);
}

.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 22px var(--accent-glow); }

.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text-secondary);
}

.btn-ghost:hover { color: var(--text-primary); border-color: var(--accent); }

.btn-lg { padding: 12px 28px; font-size: 15px; border-radius: var(--radius); }
.btn-block { width: 100%; }

/* ---------- Hero (首页) ---------- */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 76px 0 72px;
  overflow: hidden;
  text-align: center;
}

.hero-inner {
  position: relative;
  z-index: 3;
  width: 100%;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
}

.hero-center {
  position: relative;
  width: 100%;
  max-width: 52rem;
}

.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, 0.3);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 28px;
}

.hero-h1 {
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-h1 .grad {
  background: linear-gradient(120deg, var(--accent), #818cf8, var(--accent));
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradFlow 6s linear infinite;
}

@keyframes gradFlow {
  to { background-position: 200% center; }
}

.hero-sub {
  max-width: 640px;
  margin: 0 auto 40px;
  font-size: 17px;
  color: var(--text-secondary);
}

.hero-cta {
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  justify-content: center;
  gap: 56px;
}

.stat-num {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--text-primary);
}

.stat-num em { font-style: normal; color: var(--accent); }

.stat-label { font-size: 13.5px; color: var(--text-muted); margin-top: 4px; }

/* ---------- 星环 (模型环, 提取自原站) ---------- */
.orbit-container {
  --orbit-r: 26rem;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  z-index: -1;
  pointer-events: none;
  transform: scale(0) rotate(-360deg);
  opacity: 0;
}

.orbit-container.orbit-go {
  animation: orbitEntrance 2.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.orbit-spin {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  will-change: transform;
}

.orbit-go .orbit-spin {
  animation: orbitRotate 80s linear infinite;
}

.orbit-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  transform: rotate(var(--angle)) translateY(calc(var(--orbit-r) * -1));
}

.orbit-icon-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.18rem;
  transform: rotate(calc(var(--angle) * -1)) translate(-50%);
  pointer-events: auto;
  cursor: default;
  opacity: 0;
  transition: opacity 1.5s;
}

.orbit-go .orbit-icon-wrap {
  opacity: 0.5;
  animation: orbitCounterRotate 80s linear infinite;
}

.orbit-icon-wrap:hover {
  transition: opacity 0.3s;
  opacity: 1 !important;
}

.orbit-item-dim .orbit-icon-wrap {
  opacity: 0 !important;
  transition: opacity 0.3s !important;
}

.orbit-icon {
  width: 1.79rem;
  height: 1.79rem;
  max-width: none;
  flex-shrink: 0;
  object-fit: contain;
  border-radius: 0.48rem;
  background: rgb(26, 26, 34);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.24rem;
  filter: drop-shadow(rgba(0, 202, 224, 0.12) 0 0 0.48rem);
  transition: filter 0.3s, border-color 0.3s;
}

.orbit-icon-wrap:hover .orbit-icon {
  border-color: rgba(0, 202, 224, 0.3);
  filter: drop-shadow(rgba(0, 202, 224, 0.3) 0 0 0.71rem);
}

.orbit-name {
  font-size: 0.55rem;
  color: rgba(255, 255, 255, 0.35);
  white-space: nowrap;
  letter-spacing: 0.02em;
  max-width: 3.81rem;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: center;
  transition: color 0.3s;
}

.orbit-icon-wrap:hover .orbit-name {
  color: rgba(0, 202, 224, 0.8);
}

@keyframes orbitEntrance {
  0%   { transform: scale(0) rotate(-360deg); opacity: 0; }
  15%  { opacity: 1; }
  100% { transform: scale(1.25) rotate(0deg); opacity: 1; }
}

@keyframes orbitRotate {
  to { transform: rotate(360deg); }
}

@keyframes orbitCounterRotate {
  from { transform: rotate(calc(var(--angle) * -1)) translate(-50%); }
  to   { transform: rotate(calc(var(--angle) * -1 - 360deg)) translate(-50%); }
}

/* 星环响应式：小屏缩小半径 */
@media (max-width: 900px) {
  .orbit-container { --orbit-r: 16rem; }
  .orbit-icon { width: 1.55rem; height: 1.55rem; }
  .orbit-name { max-width: 3.5rem; }
  .hero-stats { gap: 40px; }
}

@media (max-width: 640px) {
  /* 小屏排版优先：隐藏星环，避免与文字重叠 */
  .orbit-container { display: none; }
  .hero-stats { gap: 28px; }
  .stat-num { font-size: 1.7rem; }
  .hero { padding: 64px 0 56px; }
}

/* ---------- 区块标题 ---------- */
.sec { padding: 70px 0; }

.sec-head { text-align: center; margin-bottom: 48px; }

.sec-chip {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, 0.25);
  color: var(--accent);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.sec-h2 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.sec-p { color: var(--text-secondary); font-size: 15.5px; max-width: 560px; margin: 0 auto; }

/* ---------- 卡片网格 ---------- */
.grid {
  display: grid;
  gap: 20px;
  margin-top: 36px;
}

.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 1000px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.25s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: var(--shadow), var(--shadow-glow);
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-size: 20px;
  margin-bottom: 16px;
  background: var(--accent-soft);
  color: var(--accent);
}

.card h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 8px; }

.card p { font-size: 13.5px; color: var(--text-secondary); line-height: 1.65; }

.card .tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 11.5px;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 600;
}

/* ---------- 模型页 ---------- */
.page-hero {
  padding: 64px 0 28px;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.page-hero p { color: var(--text-secondary); max-width: 620px; margin: 0 auto; }

.filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 36px 0 8px;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.filter-btn:hover { color: var(--text-primary); border-color: var(--accent); }

.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--text-on-accent);
  font-weight: 700;
}

/* 模型卡片 */
.model-card { display: flex; flex-direction: column; gap: 6px; }

.model-card .model-name {
  font-size: 16px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.model-card .model-desc { font-size: 12.5px; color: var(--text-muted); flex: 1; }

.model-card .model-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}

.model-card .price { font-size: 12.5px; color: var(--text-secondary); }
.model-card .price b { color: var(--accent); }

.model-badge {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 999px;
  font-weight: 600;
}

.badge-hot { background: rgba(239, 68, 68, 0.12); color: #f87171; }
.badge-new { background: var(--accent-soft); color: var(--accent); }
.badge-pro { background: rgba(129, 140, 248, 0.12); color: #a5b4fc; }

/* ---------- 智能体页 ---------- */
.agent-card { position: relative; overflow: hidden; }

.agent-card::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -30%;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  pointer-events: none;
}

.agent-avatar {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 24px;
  margin-bottom: 14px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.15), rgba(99, 102, 241, 0.15));
  border: 1px solid rgba(34, 211, 238, 0.25);
}

.agent-card .cap-list { margin-top: 12px; }

.agent-card .cap-list li {
  font-size: 12.5px;
  color: var(--text-muted);
  padding: 4px 0 4px 20px;
  position: relative;
}

.agent-card .cap-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 11px;
  top: 5px;
}

/* ---------- 灵感广场 ---------- */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }

@media (max-width: 1000px) { .gallery { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .gallery { grid-template-columns: 1fr; } }

.work-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: all 0.25s;
  cursor: pointer;
}

.work-card:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, 0.4); box-shadow: var(--shadow); }

.work-media {
  aspect-ratio: 4/3;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.06), rgba(99, 102, 241, 0.06));
  font-size: 42px;
  position: relative;
}

.work-media .play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  transition: opacity 0.25s;
  font-size: 34px;
  color: #fff;
}

.work-card:hover .play { opacity: 1; }

.work-body { padding: 16px 18px; }

.work-body h3 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }

.work-body p { font-size: 12.5px; color: var(--text-secondary); }

.work-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-muted);
}

.work-meta .author { display: flex; align-items: center; gap: 6px; }
.work-meta .author-avatar {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; font-size: 11px;
}

/* ---------- API 页 ---------- */
.api-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 28px;
  margin-top: 32px;
  align-items: start;
}

@media (max-width: 900px) { .api-layout { grid-template-columns: 1fr; } }

.api-side {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}

.api-side a {
  display: block;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  color: var(--text-secondary);
  transition: all 0.15s;
}

.api-side a:hover { color: var(--text-primary); background: var(--bg-hover); }
.api-side a.active { color: var(--accent); background: var(--accent-soft); font-weight: 600; }

.api-content { display: flex; flex-direction: column; gap: 28px; }

.api-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.api-block h2 { font-size: 19px; font-weight: 800; margin-bottom: 14px; }

.api-block h2 .num {
  color: var(--accent);
  margin-right: 8px;
  font-family: var(--font-mono);
}

.api-block p { color: var(--text-secondary); font-size: 14px; margin-bottom: 12px; }

.code-block {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  overflow-x: auto;
  margin: 14px 0;
}

.code-block pre {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: #d4d8e2;
}

.code-block .c-comment { color: #6b7280; }
.code-block .c-key { color: #22d3ee; }
.code-block .c-str { color: #a5b4fc; }
.code-block .c-num { color: #fbbf24; }

/* 参数表格 */
.param-table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 13.5px; }

.param-table th {
  text-align: left;
  padding: 10px 14px;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border-strong);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.param-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: top;
}

.param-table td:first-child { color: var(--text-primary); font-family: var(--font-mono); font-size: 12.5px; }
.param-table tr:last-child td { border-bottom: none; }

/* ---------- 价格卡 ---------- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }

@media (max-width: 900px) { .price-grid { grid-template-columns: 1fr; } }

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  text-align: center;
  transition: all 0.25s;
  position: relative;
}

.price-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 40px var(--accent-glow);
}

.price-card.featured::before {
  content: "推荐";
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent), #06b6d4);
  color: var(--text-on-accent);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 999px;
}

.price-card:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, 0.5); }

.price-name { font-size: 15px; font-weight: 700; color: var(--text-secondary); }

.price-amount {
  font-size: 2.6rem;
  font-weight: 900;
  margin: 14px 0 4px;
}

.price-amount em { font-style: normal; color: var(--accent); }

.price-amount .unit { font-size: 15px; font-weight: 600; color: var(--text-muted); }

.price-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }

.price-features { text-align: left; margin: 18px 0 24px; }

.price-features li {
  font-size: 13.5px;
  color: var(--text-secondary);
  padding: 6px 0 6px 24px;
  position: relative;
}

.price-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ---------- CTA ---------- */
.cta {
  text-align: center;
  padding: 90px 0;
  position: relative;
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 60% at 50% 100%, var(--accent-glow), transparent 70%);
  pointer-events: none;
}

.cta h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 900; margin-bottom: 18px; position: relative; }

.cta p { color: var(--text-secondary); margin-bottom: 32px; position: relative; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 44px 0 28px;
  background: var(--bg-page-2);
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}

@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-brand p { font-size: 13px; color: var(--text-muted); margin-top: 12px; max-width: 300px; }

.footer-col h4 {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.footer-col a {
  display: block;
  font-size: 13.5px;
  color: var(--text-secondary);
  padding: 5px 0;
  transition: color 0.15s;
}

.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12.5px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 动画 ---------- */
.fade-up { opacity: 0; transform: translateY(24px); transition: all 0.6s ease; }
.fade-up.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; transition: none; }
  .hero-h1 .grad { animation: none; }
  .orbit-container.orbit-go,
  .orbit-go .orbit-spin,
  .orbit-go .orbit-icon-wrap { animation: none; }
  .orbit-container.orbit-go { transform: scale(1.25); opacity: 1; }
  .orbit-go .orbit-icon-wrap { opacity: 0.5; }
}