:root {
  --background: #ffffff;
  --foreground: #0a0a0a;
  --muted-foreground: #737373;
  --primary: #103713;            /* 品牌深森林绿；白底对比度 13.3:1 */
  --primary-foreground: #e9f2ea; /* 主色块上的文字：深绿底配浅字 */
  --line: rgba(10, 10, 10, .07);
  --line-strong: rgba(10, 10, 10, .12);
  --tint: rgba(10, 10, 10, .025);
  --card: rgba(10, 10, 10, .02);
  --pattern-fg: rgba(10, 10, 10, .05);
  --radius: .75rem;
  /* .wrap 的左右内边距，网格出血时按此值反向补偿 */
  --bleed: 1rem;
  /* 字体栈：Inter（可变字重 100–900）+ IBM Plex Mono；
     中文按 CJK 回退补在末尾（原站为纯英文站点，无此需求） */
  --font-sans: "Inter Variable", "Inter", ui-sans-serif, system-ui, "PingFang SC", "Noto Sans SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Code", monospace;
}
.dark {
  --background: #0a0a0a;
  --foreground: #fafafa;
  --muted-foreground: #a1a1a1;
  /* #103713 在深底上仅 1.49:1，深色模式换用同色相提亮版（黑底 5.96:1） */
  --primary: #4f9d5f;
  --primary-foreground: #08230e; /* 亮绿底配深绿字 */
  --line: rgba(255, 255, 255, .10);
  --line-strong: rgba(255, 255, 255, .16);
  --tint: rgba(255, 255, 255, .025);
  --card: rgba(255, 255, 255, .03);
  --pattern-fg: rgba(255, 255, 255, .10);
}

*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  background: var(--background);
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color .2s ease, color .2s ease;
}
h1, h2, h3, h4, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }
::selection { background: var(--primary); color: var(--primary-foreground); }

/* ---------- 框架：中央栏 + 斜纹侧栏 ---------- */
.frame {
  display: grid;
  grid-template-columns: 1fr;
  justify-content: center;
  min-height: 100dvh;
}
.gutter { display: none; }
@media (min-width: 1024px) {
  .frame { grid-template-columns: 2.5rem minmax(0, 96rem) 2.5rem; }
  .gutter {
    display: block;
    border-left: 1px solid var(--pattern-fg);
    border-right: 1px solid var(--pattern-fg);
    background-image: repeating-linear-gradient(315deg, var(--pattern-fg) 0, var(--pattern-fg) 1px, transparent 0, transparent 50%);
    background-size: 10px 10px;
  }
}
.column { position: relative; }
/* 中央 80rem 栏的两条竖线 */
.column::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  width: min(100%, 80rem);
  margin: 0 auto;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

.wrap {
  margin: 0 auto;
  max-width: 80rem;
  padding: 0 1rem;
}
@media (min-width: 640px) { .wrap { padding: 0 1.5rem; } }
@media (min-width: 1024px) { .wrap { padding: 0 2rem; } }

/* 通栏细线 */
.rule {
  height: 1px;
  width: 200vw;
  margin-left: -100vw;
  background: var(--line);
}
.pad { padding-left: 1rem; }

.sp-2 { height: .5rem; }
.sp-4 { height: 1rem; }
.sp-6 { height: 1.5rem; }
.sp-10 { height: 1.5rem; }
.sp-24 { height: 3rem; }
@media (min-width: 640px) { .sp-10 { height: 2rem; } .sp-24 { height: 4rem; } }
@media (min-width: 1024px) { .sp-10 { height: 2.5rem; } .sp-24 { height: 6rem; } }

/* ---------- 排版 ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--primary);
  padding: .25rem 0 .25rem 1rem;
}
h1 {
  padding-left: 1rem;
  font-size: clamp(2rem, 6vw, 3.75rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.03em;
  padding-top: .25rem;
  padding-bottom: .35rem;
}
.h2 {
  padding-left: 1rem;
  font-size: clamp(1.6rem, 4.2vw, 2.25rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.02em;
  padding-top: .3rem;
  padding-bottom: .4rem;
}
.dim { color: var(--muted-foreground); }
/* 折行宽度与 .callout 保持一致：左侧仍对齐 1rem 的正文轴线，
   右侧留白补足差额，使两者的行长完全相同 */
.lede {
  padding: .5rem 1.5rem .6rem 1rem;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--muted-foreground);
}
@media (min-width: 640px) { .lede { padding-right: 3rem; font-size: 1.125rem; } }

/* ---------- 头部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--background) 72%, transparent);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
}
.nav {
  margin: 0 auto;
  max-width: 80rem;
  height: 4rem;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .25rem;
}
@media (min-width: 640px) { .nav { padding: 0 1.5rem; } }
@media (min-width: 1024px) { .nav { padding: 0 2rem; } }
.logo { display: flex; align-items: center; gap: .625rem; }
.logo-mark { height: 1.125rem; width: auto; }
.logo-mark.on-light { display: block; }
.logo-mark.on-dark { display: none; }
.dark .logo-mark.on-light { display: none; }
.dark .logo-mark.on-dark { display: block; }
.logo-text { font-size: 1.0625rem; font-weight: 600; letter-spacing: .02em; line-height: 1; }
/* 21px 时 cap-height 与中文字面等高，这里取 19px，略低于「依明」 */
.logo-sub {
  font-family: var(--font-mono);
  font-size: 1.1875rem;
  font-weight: 400;
  line-height: 1;
  letter-spacing: .1em;
  color: var(--muted-foreground);
  margin-left: .125rem;
}
/* 菜单靠右，紧贴主题切换按钮 */
.nav-links { display: none; align-items: center; gap: .125rem; margin-left: auto; }
/* 菜单项 8 个，900px 会逐项折行，断点上调到 1024px */
@media (min-width: 1024px) { .nav-links { display: flex; } }
.nav-links a {
  padding: .5rem .75rem;
  font-size: .875rem;
  white-space: nowrap;
  color: var(--muted-foreground);
  transition: color .15s ease;
}
.nav-links a:hover { color: var(--foreground); }
/* 站内锚点与独立页面之间的分隔符 */
.nav-sep {
  color: var(--line-strong);
  font-size: .875rem;
  user-select: none;
  margin: 0 .125rem;
}
.nav-links a[aria-current="page"] { color: var(--foreground); }
.nav-actions { display: flex; align-items: center; gap: .5rem; }
.icon-btn {
  width: 2.25rem; height: 2.25rem;
  display: grid; place-items: center;
  border: 0;
  border-radius: .5rem;
  background: transparent;
  color: var(--muted-foreground);
  transition: color .15s ease, background .15s ease;
}
.icon-btn:hover { color: var(--foreground); background: var(--tint); }
.icon-btn svg { width: 1.125rem; height: 1.125rem; }
.menu-btn { display: grid; }
@media (min-width: 1024px) { .menu-btn { display: none; } }
.sun { display: none; }
.dark .sun { display: block; }
.dark .moon { display: none; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  border-radius: 9999px;
  padding: .625rem 1.25rem;
  font-size: .875rem;
  font-weight: 600;
  white-space: nowrap;
  transition: opacity .15s ease, background .15s ease, border-color .15s ease;
}
.btn svg { width: 1rem; height: 1rem; }
.btn-primary { background: var(--primary); color: var(--primary-foreground); }
.btn-primary:hover { opacity: .9; }
.btn-ghost { border: 1px solid var(--line-strong); color: var(--foreground); }
.btn-ghost:hover { background: var(--tint); }
.btn-lg { padding: .8125rem 1.5rem; }

.mobile-menu {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--background);
}
.mobile-menu.open { display: block; }
@media (min-width: 1024px) { .mobile-menu.open { display: none; } }
.mobile-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .875rem 1.25rem;
  border-bottom: 1px solid var(--line);
  font-size: .9375rem;
}
.mobile-menu a span {
  font-family: var(--font-mono);
  font-size: .6875rem;
  color: var(--muted-foreground);
}

.header-spacer { height: 4rem; }

/* ---------- 网格与卡片 ---------- */
.grid-2, .grid-3, .grid-4, .grid-6 { display: grid; grid-template-columns: 1fr; }
@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-6 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .grid-6 { grid-template-columns: repeat(3, 1fr); }
}
.cell {
  padding: 1.5rem 1.25rem;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  transition: background .15s ease;
}
@media (min-width: 640px) { .cell { padding: 2rem; } }
.cell:hover { background: var(--tint); }
.cell h3 {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: .01em;
}
.cell p {
  margin-top: .5rem;
  font-size: .875rem;
  line-height: 1.8;
  color: var(--muted-foreground);
}
.cell-tag {
  display: block;
  margin-bottom: .75rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}
.cell-num {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 500;
  line-height: 1;
  color: var(--primary);
  margin-bottom: 1rem;
  display: block;
}
.span-full { grid-column: 1 / -1; border-right: 0 !important; }

/* 边框收尾：末列去掉右边线；末行底线由随后的通栏细线接管 */
.grid-edge { margin-bottom: -1px; }
.grid-2 > .cell, .grid-3 > .cell, .grid-4 > .cell, .grid-6 > .cell { border-right: 0; }
@media (min-width: 640px) {
  .grid-2 > .cell:nth-child(odd),
  .grid-3 > .cell:nth-child(odd),
  .grid-4 > .cell:nth-child(odd),
  .grid-6 > .cell:nth-child(odd) { border-right: 1px solid var(--line); }
}
@media (min-width: 1024px) {
  .grid-3 > .cell, .grid-4 > .cell, .grid-6 > .cell { border-right: 1px solid var(--line); }
  .grid-3 > .cell:nth-child(3n),
  .grid-6 > .cell:nth-child(3n),
  .grid-4 > .cell:nth-child(4n) { border-right: 0; }
}

/* ---------- 网格出血：让首末列的底色与边线抵达中央栏竖线 ----------
   容器用负边距顶掉 .wrap 的左右内边距，首末列再把等量内边距补回单元格内部，
   所以只有背景和边框变宽，文字轴线与出血前完全一致。
   每个断点内先用 :nth-child(n) 重置（与后续规则同等特异性），再补首末列 */
@media (min-width: 640px) { :root { --bleed: 1.5rem; } }
@media (min-width: 1024px) { :root { --bleed: 2rem; } }

.grid-2, .grid-3, .grid-4, .grid-6, .stats, .logos {
  margin-left: calc(var(--bleed) * -1);
  margin-right: calc(var(--bleed) * -1);
}

/* 单列（<640px）：每个单元格既是首列也是末列 */
.grid-2 > .cell, .grid-3 > .cell, .grid-4 > .cell, .grid-6 > .cell,
.grid-4 > .foot-col {
  padding-left: calc(1.25rem + var(--bleed));
  padding-right: calc(1.25rem + var(--bleed));
}
/* .stats 在任何宽度下都至少两列 */
.stat:nth-child(odd) { padding-left: calc(1.25rem + var(--bleed)); }
.stat:nth-child(even) { padding-right: calc(1.25rem + var(--bleed)); }

@media (min-width: 640px) {
  .grid-2 > .cell:nth-child(n), .grid-3 > .cell:nth-child(n),
  .grid-4 > .cell:nth-child(n), .grid-6 > .cell:nth-child(n),
  .grid-4 > .foot-col:nth-child(n) { padding-left: 2rem; padding-right: 2rem; }
  .grid-2 > .cell:nth-child(odd), .grid-3 > .cell:nth-child(odd),
  .grid-4 > .cell:nth-child(odd), .grid-6 > .cell:nth-child(odd),
  .grid-4 > .foot-col:nth-child(odd) { padding-left: calc(2rem + var(--bleed)); }
  .grid-2 > .cell:nth-child(even), .grid-3 > .cell:nth-child(even),
  .grid-4 > .cell:nth-child(even), .grid-6 > .cell:nth-child(even),
  .grid-4 > .foot-col:nth-child(even) { padding-right: calc(2rem + var(--bleed)); }
  .stat:nth-child(n) { padding-left: 2rem; padding-right: 2rem; }
  .stat:nth-child(odd) { padding-left: calc(2rem + var(--bleed)); }
  .stat:nth-child(even) { padding-right: calc(2rem + var(--bleed)); }
}

/* .stats 在 900px 变四列，与 --bleed 的 1024px 断点不同步，单独处理 */
@media (min-width: 900px) {
  .stat:nth-child(n) { padding-left: 2rem; padding-right: 2rem; }
  .stat:nth-child(4n+1) { padding-left: calc(2rem + var(--bleed)); }
  .stat:nth-child(4n) { padding-right: calc(2rem + var(--bleed)); }
}

@media (min-width: 1024px) {
  /* grid-3 / grid-6 三列，grid-4 四列；grid-2 仍是两列，沿用 640px 的规则 */
  .grid-3 > .cell:nth-child(n), .grid-6 > .cell:nth-child(n),
  .grid-4 > .cell:nth-child(n), .grid-4 > .foot-col:nth-child(n) { padding-left: 2rem; padding-right: 2rem; }
  .grid-3 > .cell:nth-child(3n+1), .grid-6 > .cell:nth-child(3n+1),
  .grid-4 > .cell:nth-child(4n+1), .grid-4 > .foot-col:nth-child(4n+1) { padding-left: calc(2rem + var(--bleed)); }
  .grid-3 > .cell:nth-child(3n), .grid-6 > .cell:nth-child(3n),
  .grid-4 > .cell:nth-child(4n), .grid-4 > .foot-col:nth-child(4n) { padding-right: calc(2rem + var(--bleed)); }
}

/* 通栏单元格始终同时补两侧；置于所有断点之后，靠源码顺序压过上面的 nth-child 规则 */
.cell.span-full:nth-child(n) {
  padding-left: calc(1.25rem + var(--bleed));
  padding-right: calc(1.25rem + var(--bleed));
}
@media (min-width: 640px) {
  .cell.span-full:nth-child(n) {
    padding-left: calc(2rem + var(--bleed));
    padding-right: calc(2rem + var(--bleed));
  }
}

/* ---------- 图片 ---------- */
.shot {
  width: 100%;
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--card);
}
.shot img { width: 100%; height: auto; }
.hero-media { position: relative; padding: 1rem 0; } /* 上下出血一致 */
@media (min-width: 640px) { .hero-media { padding: 2rem 0; } }
.hero-media .shot img { aspect-ratio: 16 / 9; object-fit: cover; }

/* ---------- 指标条 ---------- */
.stats { display: grid; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 900px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat {
  padding: 1.25rem;
  border-right: 1px solid var(--line);
}
.stat:nth-child(2n) { border-right: 0; }
.stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
@media (min-width: 640px) { .stat { padding: 1.5rem 2rem; } }
@media (min-width: 900px) {
  .stat:nth-child(2n) { border-right: 1px solid var(--line); }
  .stat:nth-child(4n) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 0; }
}
.stat strong {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .01em;
}
.stat span {
  display: block;
  margin-top: .25rem;
  font-size: .8125rem;
  color: var(--muted-foreground);
}

/* ---------- 关键词 ---------- */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  padding: 1.5rem 1rem 2rem;
}
.chip {
  padding: .3125rem .75rem;
  border: 1px solid var(--line-strong);
  border-radius: 9999px;
  font-size: .8125rem;
  color: var(--muted-foreground);
  cursor: default; /* 非可点元素，压掉文字上默认的 I 型光标 */
  transition: color .15s ease, border-color .15s ease;
}
.chip:hover { color: var(--foreground); border-color: var(--primary); }

/* ---------- 经营闭环区块：浅色模式与其他板块同底色，深色模式保持深色 ---------- */
.band-dark { position: relative; }
.dark .band-dark {
  background: #0a0a0a;
  color: #fafafa;
  --line: rgba(255, 255, 255, .10);
  --line-strong: rgba(255, 255, 255, .18);
  --muted-foreground: #a1a1a1;
  --tint: rgba(255, 255, 255, .04);
  --primary: #4f9d5f;
  --foreground: #fafafa;
}
.dark .band-dark .rule { background: var(--line); }
/* 深色模式下重绘中央栏竖线（浅色竖线在此不可见） */
.dark .band-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  width: min(100%, 80rem);
  margin: 0 auto;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

.loop-step { position: relative; }
.loop-step .cell-tag { color: var(--primary); }
.loop-arrow {
  position: absolute;
  top: 2rem;
  right: -.6rem;
  z-index: 5;
  width: 1.2rem;
  height: 1.2rem;
  display: none;
  place-items: center;
  border-radius: 50%;
  background: var(--primary);
  color: var(--primary-foreground);
}
@media (min-width: 1024px) {
  .loop-step:not(:last-child) .loop-arrow { display: grid; }
}
.loop-arrow svg { width: .7rem; height: .7rem; }

.callout {
  padding: 2rem 1.25rem;
  font-size: 1.125rem;
  line-height: 1.85;
}
@media (min-width: 640px) { .callout { padding: 2.5rem 2rem; font-size: 1.25rem; } }
.callout b { color: var(--primary); font-weight: 600; }

/* ---------- 合规徽章 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .3125rem .75rem;
  border: 1px solid var(--line-strong);
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .08em;
  color: var(--muted-foreground);
  margin-top: 1rem;
}
.badge i {
  width: .375rem; height: .375rem;
  border-radius: 50%;
  background: var(--primary);
}

/* ---------- 客户 Logo 墙 ---------- */
/* 出血由上面的通用规则统一处理；此处 logo 居中，不需要补偿首末列内边距 */
.logos {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}
/* 横向分隔一律交给前后的通栏细线，cell 自身不带底线；
   否则两条 1px 半透明线会叠在同一像素行上，颜色比别处深一倍 */
.logo-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  transition: background .15s ease;
}
/* 两列时第一行需要自己的底线（此处没有通栏细线可用） */
.logo-cell:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
.logo-cell:nth-child(odd) { border-right: 1px solid var(--line); }
/* 末行不满时，最后一格不能拖出一条伸向空白的竖线 */
.logo-cell:last-child { border-right: 0; }
@media (min-width: 640px) {
  .logo-cell { padding: 1.5rem; }
}
@media (min-width: 1024px) {
  .logos { grid-template-columns: repeat(4, 1fr); }
  .logo-cell {
    padding: 2rem;
    border-right: 1px solid var(--line);
  }
  .logo-cell:nth-child(-n+2) { border-bottom: 0; } /* 特异性需与两列时的规则相同才能盖住 */
  .logo-cell:nth-child(4n) { border-right: 0; }
  .logo-cell:last-child { border-right: 0; }
}
.logo-cell:hover { background: var(--tint); }
/* 尺寸同原站：按高度约束，宽度随比例（3 / 4 / 5rem） */
.logo-cell img {
  height: 3rem;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  opacity: .4;
  filter: grayscale(1);
  transition: opacity .2s ease;
}
@media (min-width: 640px) { .logo-cell img { height: 4rem; } }
@media (min-width: 1024px) { .logo-cell img { height: 5rem; } }
.dark .logo-cell img { filter: grayscale(1) invert(1); }
/* 悬停只提亮，不还原彩色：明暗模式下 logo 始终是统一色
   （原站浅色模式 hover 会出彩色，此处按需求统一掉） */
.logo-cell:hover img { opacity: 1; }
/* 末位「+」虚线占位格 */
.logo-add {
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  border: 1px dashed var(--line-strong);
  border-radius: .75rem;
  color: var(--muted-foreground);
  opacity: .4;
  transition: opacity .2s ease, border-color .2s ease;
}
.logo-cell:hover .logo-add { opacity: 1; border-color: var(--primary); }
.logo-add svg { width: 1rem; height: 1rem; }

/* ---------- CTA ---------- */
.cta {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 2.5rem 1.25rem;
}
@media (min-width: 900px) {
  .cta { flex-direction: row; align-items: center; justify-content: space-between; padding: 3rem 2rem; }
}
.cta h2 {
  font-size: clamp(1.5rem, 3.6vw, 2rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.35;
}
.cta p { margin-top: .5rem; color: var(--muted-foreground); font-size: .9375rem; }
.cta-actions { display: flex; flex-wrap: wrap; gap: .75rem; }

/* ---------- 页脚 ---------- */
footer { font-size: .875rem; line-height: 1.9; }
.foot-col {
  padding: 1.5rem 1.25rem;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 640px) {
  .foot-col { padding: 2rem; }
  .foot-col:nth-child(odd) { border-right: 1px solid var(--line); }
}
@media (min-width: 1024px) {
  .foot-col { border-right: 1px solid var(--line); }
  .foot-col:nth-child(4n) { border-right: 0; }
}
.foot-col h3 { font-size: .875rem; font-weight: 600; }
.foot-col ul { margin-top: .75rem; display: grid; gap: .375rem; }
.foot-col a, .foot-col li { color: var(--muted-foreground); }
.foot-col a:hover { color: var(--foreground); text-decoration: underline; }
.foot-bottom {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding: 1.5rem 1.25rem;
  font-size: .8125rem;
  color: var(--muted-foreground);
}
@media (min-width: 640px) {
  .foot-bottom { flex-direction: row; align-items: center; justify-content: space-between; padding: 1.5rem 2rem; }
}

/* 底部巨型字标（SVG 文本横向拉满，底部裁切）；点击回到顶部 */
.wordmark {
  display: block;
  margin: 0 auto;
  max-width: 80rem;
  overflow: hidden;
  line-height: 0;
  cursor: pointer;
  padding-bottom: 15px; /* 字标与下方细线之间的出血 */
}
.wordmark svg {
  display: block;
  width: 100%;
  overflow: visible; /* 不裁切圆形字母（G）的视觉超出量 */
  color: var(--primary);
  transform-origin: bottom center;
  transition: opacity .25s ease, transform .35s cubic-bezier(.22,.61,.36,1);
}
.wordmark:hover svg { opacity: .82; transform: translateY(-1.5%); }
.wordmark:active svg { transform: translateY(0); }
.wordmark:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }
.foot-bottom .mono {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

/* ---------- 出场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .6s cubic-bezier(.22,.61,.36,1), transform .6s cubic-bezier(.22,.61,.36,1);
}
.reveal.visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

section[id] { scroll-margin-top: 5rem; }

/* ================= 产品页专用组件 ================= */

/* 经营目标示例：页面里被系统"接住"的那句话 */
.quote {
  margin: 0;
  padding: 1.5rem 1.25rem;
  font-size: 1.125rem;
  line-height: 1.7;
  border-left: 2px solid var(--primary);
  background: var(--card);
}
@media (min-width: 640px) { .quote { padding: 2rem; font-size: 1.25rem; } }
.quote cite {
  display: block;
  margin-top: .75rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-style: normal;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}

/* 链路：提出目标 → 系统判断 → 任务编排 → … */
.chain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .75rem;
  padding: 1.5rem 1rem 2rem;
}
.chain-step {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .4375rem .875rem;
  border: 1px solid var(--line-strong);
  border-radius: 9999px;
  font-size: .875rem;
  white-space: nowrap;
}
.chain-step b {
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 500;
  color: var(--primary);
}
.chain-arrow { color: var(--muted-foreground); flex: none; }
.chain-arrow svg { width: .875rem; height: .875rem; display: block; }

/* 单元格内的要点列表 */
.bullets { margin-top: .875rem; display: grid; gap: .5rem; }
.bullets li {
  position: relative;
  padding-left: 1rem;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--muted-foreground);
}
.bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .6875rem;
  width: .3125rem;
  height: 1px;
  background: var(--primary);
}

/* 四个结果：更快破冰 / 更准推荐 / 更高连带 / 更持续复购 */
.big-4 .cell { text-align: left; }
.big-4 strong {
  display: block;
  font-size: clamp(1.375rem, 3vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.3;
}
.big-4 .cell-num { font-size: 1.125rem; }

/* 产品切换：页内两个产品的快速跳转。
   栅格/出血/边框全部复用 .grid-2，此处只加差异化外观 */
.prod-switch .cell h3 { font-size: 1.25rem; }
.prod-switch .cell:hover h3 { color: var(--primary); }
.prod-switch .cell { display: flex; flex-direction: column; justify-content: space-between; gap: 1.5rem; }
.prod-go {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--primary);
}
.prod-go svg { width: .875rem; height: .875rem; }

/* ---------- 导航：产品下拉 ---------- */
.nav-drop { position: relative; display: none; }
@media (min-width: 1024px) { .nav-drop { display: block; } }
.nav-drop-btn {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  padding: .5rem .75rem;
  border: 0;
  background: transparent;
  font-size: .875rem;
  white-space: nowrap;
  color: var(--muted-foreground);
  transition: color .15s ease;
}
.nav-drop-btn:hover,
.nav-drop.open .nav-drop-btn,
.nav-drop-btn[aria-current="page"] { color: var(--foreground); }
.nav-drop-btn svg { width: .75rem; height: .75rem; transition: transform .2s ease; }
.nav-drop.open .nav-drop-btn svg { transform: rotate(180deg); }
.nav-drop-menu {
  position: absolute;
  top: calc(100% + .5rem);
  right: 0;
  z-index: 50;
  width: 19rem;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--background);
  box-shadow: 0 12px 32px rgba(10, 10, 10, .12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-.375rem);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
.dark .nav-drop-menu { box-shadow: 0 12px 32px rgba(0, 0, 0, .5); }
.nav-drop.open .nav-drop-menu { opacity: 1; visibility: visible; transform: none; }
.nav-drop-menu a {
  display: block;
  padding: .875rem 1rem;
  transition: background .15s ease;
}
.nav-drop-menu a + a { border-top: 1px solid var(--line); }
.nav-drop-menu a:hover { background: var(--tint); }
.nd-ver {
  display: block;
  font-family: var(--font-mono);
  font-size: .625rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--primary);
}
.nd-name {
  display: block;
  margin-top: .25rem;
  font-size: .9375rem;
  font-weight: 600;
  color: var(--foreground);
}
.nd-desc {
  display: block;
  margin-top: .1875rem;
  font-size: .8125rem;
  line-height: 1.5;
  color: var(--muted-foreground);
}

/* ================= 悬停微交互 =================
   在本就有「背景色变化」的元素上，叠加文字 / 图片的位移与缩放特效，
   让交互更有层次。全部走同一条缓动曲线，reduced-motion 下位移自动归零。 */
:root { --ease-hover: cubic-bezier(.22,.61,.36,1); }

/* —— 卡片：背景转暖色微调；标题右移变主色，编号放大，正文提亮 —— */
.cell h3,
.cell p,
.cell .cell-tag,
.cell .cell-num,
.cell .badge {
  transition: transform .3s var(--ease-hover), color .25s ease;
}
/* 卡片正文为静态文字，压掉默认的 I 型光标；可点击的卡片单独恢复手型 */
.cell { cursor: default; }
a.cell { cursor: pointer; }
.cell h3 { transform-origin: left center; }
.cell:hover { background: color-mix(in srgb, var(--primary) 6%, var(--tint)); }
/* 标题：右移 + 放大字体 */
.cell:hover h3 { color: var(--primary); transform: translateX(5px) scale(1.06); }
.cell:hover .cell-tag { color: var(--primary); }
.cell:hover .cell-num { transform: scale(1.1); }
.cell:hover p { color: var(--foreground); }
.cell:hover .badge { transform: translateX(5px); }

/* 产品切换卡：已变色的标题再补上「前往」箭头右移 */
.prod-go { transition: transform .3s var(--ease-hover); }
.prod-switch .cell:hover .prod-go { transform: translateX(4px); }

/* —— Logo 墙：背景微调；Logo 放大提亮 —— */
.logo-cell img { transition: opacity .2s ease, transform .3s var(--ease-hover); }
.logo-cell:hover { background: color-mix(in srgb, var(--primary) 6%, var(--tint)); }
.logo-cell:hover img { opacity: 1; transform: scale(1.08); }

/* —— 图标 / 主题按钮：图标轻微放大 —— */
.icon-btn svg { transition: transform .25s var(--ease-hover); }
.icon-btn:hover svg { transform: scale(1.15); }

/* —— 按钮：整体上浮，主按钮内图标右移 —— */
.btn { transition: opacity .15s ease, background .15s ease, border-color .15s ease, transform .25s var(--ease-hover); }
.btn:hover { transform: translateY(-2px); }
.btn svg { transition: transform .25s ease; }
.btn-primary:hover svg { transform: translateX(3px); }

/* —— 导航下拉项：整体右移 —— */
.nav-drop-menu a { transition: background .15s ease, transform .2s ease; }
.nav-drop-menu a:hover { transform: translateX(4px); }

/* —— 关键词 chip：上浮 + 暖色底 —— */
.chip { transition: color .15s ease, border-color .15s ease, background .2s ease, transform .25s var(--ease-hover); }
.chip:hover { transform: translateY(-3px); background: color-mix(in srgb, var(--primary) 8%, transparent); }

/* —— 链路 chain-step：上浮描主色边 —— */
.chain-step { transition: transform .25s var(--ease-hover), border-color .2s ease, background .2s ease; }
.chain-step:hover { transform: translateY(-2px); border-color: var(--primary); background: color-mix(in srgb, var(--primary) 6%, transparent); }

/* —— 顶部导航链接：轻微上移 —— */
.nav-links a { transition: color .15s ease, transform .2s ease; }
.nav-links a:hover { transform: translateY(-1px) scale(1.06); }

/* reduced-motion：保留背景/颜色反馈，去掉所有位移与缩放 */
@media (prefers-reduced-motion: reduce) {
  .cell:hover h3,
  .cell:hover .cell-num,
  .cell:hover .badge,
  .prod-switch .cell:hover .prod-go,
  .logo-cell:hover img,
  .icon-btn:hover svg,
  .btn:hover,
  .btn-primary:hover svg,
  .nav-drop-menu a:hover,
  .chip:hover,
  .chain-step:hover,
  .nav-links a:hover { transform: none; }
}