/* Weilanx Mind Map 官网:参照 XMind 官网的版式——白底、近黑大标题、红色手写强调、饱和色大卡片、超大圆角 */
:root {
  --ink: #18191c;
  --ink-2: #3a3d44;
  --muted: #6b7079;
  --line: #ececef;
  --soft: #f6f6f8;
  --red: #f0473f;
  --red-2: #ff6a4d;
  --teal-1: #10a89b;
  --teal-2: #36c6b1;
  --purple-1: #6d4cf6;
  --purple-2: #a084ff;
  --blue-1: #2f7bf6;
  --blue-2: #5aa6ff;
  --orange-1: #ff7a3d;
  --orange-2: #ffa86b;
  --radius: 28px;
  --shadow: 0 24px 60px -24px rgba(24, 25, 28, 0.28);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --script: "Caveat", "LXGW WenKai", "Kaiti SC", "STKaiti", cursive;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}
html[lang="zh-CN"] body {
  --script: "LXGW WenKai", "Kaiti SC", "STKaiti", cursive;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
}
h1,
h2,
h3,
h4 {
  margin: 0;
  letter-spacing: -0.02em;
}
code {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9em;
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--soft);
}
pre code {
  padding: 0;
  border-radius: 0;
  background: none;
  font-size: inherit;
}
.script {
  font-family: var(--script);
  font-style: normal;
  font-weight: 700;
  color: var(--red);
  letter-spacing: 0;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  font: 600 15px/1 var(--font);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}
.btn:hover {
  transform: translateY(-1px);
}
.btn-lg {
  padding: 15px 26px;
  font-size: 16px;
}
.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}
.btn-red {
  background: var(--red);
  color: #fff;
  box-shadow: 0 10px 24px -10px rgba(240, 71, 63, 0.8);
}
.btn-red:hover {
  background: #e33a32;
}
.btn-dark {
  background: var(--ink);
  color: #fff;
}
.btn-outline {
  border-color: #d9dade;
  background: #fff;
  color: var(--ink);
}
.btn-outline:hover {
  border-color: var(--ink);
}
.btn-white {
  background: #fff;
  color: var(--purple-1);
}

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.nav.scrolled {
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
}
.brand img {
  border-radius: 8px;
}
.nav-links {
  display: flex;
  gap: 24px;
  font-size: 14.5px;
  font-weight: 500;
}
.nav-links a {
  text-decoration: none;
  color: var(--ink-2);
}
.nav-links a:hover {
  color: var(--red);
}
.nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}
.lang,
.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  font: 500 14px var(--font);
  color: var(--ink-2);
  cursor: pointer;
  text-decoration: none;
}
.icon-btn {
  width: 36px;
  justify-content: center;
  padding: 0;
  font-size: 18px;
}
.lang:hover,
.icon-btn:hover {
  border-color: #c9cbd0;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 72px 24px 0;
  text-align: center;
  overflow: hidden;
  background: radial-gradient(1200px 520px at 50% -10%, #fff1ef 0%, rgba(255, 255, 255, 0) 70%);
}
.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
}
.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px 5px 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-2);
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.pill-new {
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--red);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}
.hero-title {
  margin: 26px 0 0;
  font-size: clamp(44px, 7.4vw, 92px);
  line-height: 1.04;
  font-weight: 800;
  letter-spacing: -0.035em;
}
.hero-title .script {
  font-size: 1.12em;
  line-height: 0.9;
}
html[lang="zh-CN"] .hero-title {
  font-size: clamp(42px, 6.6vw, 82px);
  line-height: 1.16;
  letter-spacing: -0.01em;
}
html[lang="zh-CN"] .hero-title .script {
  font-size: 1.05em;
}
.hero-sub {
  max-width: 640px;
  margin: 24px auto 0;
  font-size: 18.5px;
  color: var(--muted);
}
.hero-ctas {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}
.hero-note {
  margin: 16px 0 0;
  font-size: 13.5px;
  color: #9a9ea6;
}
.hero-shot {
  position: relative;
  z-index: 2;
  max-width: 1120px;
  margin: 64px auto 0;
}
.window {
  border-radius: 18px 18px 0 0;
  overflow: hidden;
  border: 1px solid #e3e4e8;
  border-bottom: none;
  background: #fff;
  box-shadow: 0 40px 100px -40px rgba(24, 25, 28, 0.35), 0 0 0 8px rgba(255, 255, 255, 0.6);
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 38px;
  padding: 0 16px;
  background: #f4f4f6;
  border-bottom: 1px solid #e8e8ec;
  font-size: 12.5px;
  color: #8a8e96;
}
.window-bar i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #ff5f57;
}
.window-bar i:nth-child(2) {
  background: #febc2e;
}
.window-bar i:nth-child(3) {
  background: #28c840;
}
.window-bar span {
  margin-left: 12px;
}

/* Hero 两侧的悬浮装饰 */
.hero-deco {
  position: absolute;
  top: 110px;
  width: 300px;
  height: 420px;
  z-index: 1;
  pointer-events: none;
}
.hero-deco-left {
  left: max(16px, calc(50% - 680px));
}
.hero-deco-right {
  right: max(16px, calc(50% - 680px));
}
.sketch-card {
  position: absolute;
  top: 40px;
  left: 0;
  padding: 10px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transform: rotate(-6deg);
}
.hero-deco-left .cursor-you {
  top: 210px;
  left: 190px;
}
.chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  font-size: 13.5px;
  font-weight: 500;
  white-space: nowrap;
}
.chip-note {
  top: 300px;
  left: 30px;
  background: #fff6d6;
  border-color: #f3e3a4;
  transform: rotate(3deg);
}
.chip-marker {
  top: 20px;
  right: 30px;
  transform: rotate(4deg);
}
.m-dot {
  display: inline-grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #e5484d;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
}
.m-pie {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid #30a46c;
  background: conic-gradient(#30a46c 0 50%, #fff 50% 100%);
}
.code-card {
  position: absolute;
  top: 120px;
  right: 0;
  padding: 14px 16px;
  border-radius: 14px;
  background: #1e1f24;
  color: #d7dae0;
  font: 12.5px/1.7 "SF Mono", Menlo, monospace;
  text-align: left;
  box-shadow: var(--shadow);
  transform: rotate(-3deg);
}
.code-card .k {
  color: #8ab4ff;
}
.code-card .s {
  color: #9be29b;
}
.cursor {
  position: absolute;
  display: inline-flex;
  align-items: flex-start;
  gap: 2px;
  font-size: 12.5px;
  font-weight: 600;
}
.cursor span {
  margin-top: 14px;
  padding: 4px 10px;
  border-radius: 8px 8px 8px 2px;
  color: #fff;
}
.cursor-you {
  color: var(--red);
}
.cursor-you span {
  background: var(--red);
}
.cursor-ai {
  top: 290px;
  right: 120px;
  color: var(--purple-1);
}
.cursor-ai span {
  background: var(--purple-1);
}
@keyframes floatA {
  50% {
    translate: 0 -10px;
  }
}
@keyframes floatB {
  50% {
    translate: 6px 8px;
  }
}
.float-a {
  animation: floatA 6s ease-in-out infinite;
}
.float-b {
  animation: floatB 7s ease-in-out infinite;
}
.float-c {
  animation: floatA 8s ease-in-out infinite 1s;
}

/* ---------- 工具条 ---------- */
.logos {
  padding: 56px 24px 24px;
  text-align: center;
  border-top: 1px solid var(--line);
}
.logos p {
  margin: 0 0 22px;
  font-size: 14px;
  color: var(--muted);
}
.logo-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px 44px;
  font-size: 19px;
  font-weight: 700;
  color: #9fa3ab;
}
.logo-row span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* ---------- 通用区块 ---------- */
.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 72px 24px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 40px;
}
.section-head h2 {
  font-size: clamp(32px, 4.2vw, 48px);
  font-weight: 800;
}
.section-head p {
  margin: 12px auto 0;
  max-width: 600px;
  font-size: 17px;
  color: var(--muted);
}

/* ---------- AI 工作流 ---------- */
.ai-card {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 32px;
  align-items: center;
  padding: 56px;
  border-radius: var(--radius);
  background: radial-gradient(600px 300px at 85% 20%, rgba(255, 255, 255, 0.22), transparent 70%), linear-gradient(135deg, #7d5cff 0%, #b49bff 55%, #d6c8ff 100%);
  color: #fff;
  overflow: hidden;
}
.ai-copy h2 {
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.06;
}
.ai-copy p {
  margin: 18px 0 0;
  font-size: 17px;
  opacity: 0.92;
  max-width: 440px;
}
.ai-points {
  list-style: none;
  padding: 0;
  margin: 22px 0 28px;
  display: grid;
  gap: 10px;
  font-weight: 500;
}
.ai-points li {
  display: flex;
  align-items: center;
  gap: 10px;
}
.ai-points i {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  font-size: 13px;
}
.ai-diagram {
  position: relative;
  height: 340px;
}
.ai-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.ai-lines path {
  fill: none;
  stroke: rgba(255, 255, 255, 0.85);
  stroke-width: 2;
  stroke-dasharray: 6 6;
  animation: dash 20s linear infinite;
}
@keyframes dash {
  to {
    stroke-dashoffset: -400;
  }
}
.node {
  position: absolute;
  padding: 10px 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--purple-1);
  font-weight: 700;
  font-size: 14.5px;
  box-shadow: 0 10px 24px -12px rgba(40, 20, 120, 0.5);
}
.node-tl {
  left: 2%;
  top: 12%;
}
.node-bl {
  left: 6%;
  bottom: 12%;
}
.node-tr {
  right: 4%;
  top: 12%;
  font-family: "SF Mono", Menlo, monospace;
}
.node-br {
  right: 2%;
  bottom: 12%;
  font-family: "SF Mono", Menlo, monospace;
}
.node-center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 18px;
  background: #fff;
  color: var(--ink);
  font-weight: 700;
  font-size: 16px;
  white-space: nowrap;
  box-shadow: 0 20px 40px -16px rgba(40, 20, 120, 0.55);
}
.node-center img {
  border-radius: 9px;
}
.toggle {
  width: 42px;
  height: 24px;
  border-radius: 999px;
  background: var(--purple-1);
  position: relative;
}
.toggle span {
  position: absolute;
  right: 3px;
  top: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
}

/* ---------- 功能卡片 ---------- */
.card {
  position: relative;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 24px;
  align-items: center;
  margin-bottom: 24px;
  padding: 44px 0 0 48px;
  border-radius: var(--radius);
  color: #fff;
  overflow: hidden;
  min-height: 380px;
}
.card-flip {
  grid-template-columns: 1.15fr 0.85fr;
  padding: 44px 48px 0 0;
}
.card-flip .card-copy {
  order: 2;
}
.card-copy {
  align-self: start;
  padding-bottom: 44px;
}
.card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 28px;
  font-weight: 800;
}
.card h3 i {
  font-size: 26px;
}
.card p {
  margin: 14px 0 0;
  font-size: 16.5px;
  opacity: 0.94;
  max-width: 420px;
}
.card-media {
  align-self: end;
}
.card-media img {
  border-radius: 14px 0 0 0;
  box-shadow: -12px -12px 40px -20px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.5);
}
.card-flip .card-media img {
  border-radius: 0 14px 0 0;
}
.card-teal {
  background: linear-gradient(135deg, var(--teal-1), var(--teal-2));
}
.card-purple {
  background: linear-gradient(135deg, var(--purple-1), var(--purple-2));
}
.card-blue {
  background: linear-gradient(160deg, var(--blue-1), var(--blue-2));
}
.card-orange {
  background: linear-gradient(160deg, var(--orange-1), var(--orange-2));
}
.card-dark {
  background: radial-gradient(500px 260px at 20% 0%, rgba(255, 255, 255, 0.08), transparent 70%), #17181b;
}
.card-tags {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.card-tags li {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  font-size: 13.5px;
  font-weight: 600;
}
.card-pair > *,
.scene-panel > *,
.ai-card > * {
  min-width: 0;
}
.card-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.card-pair .card {
  grid-template-columns: 1fr;
  padding: 40px 0 0 40px;
  min-height: 520px;
}
.card-pair .card-copy {
  padding: 0 40px 24px 0;
}
.more-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  display: grid;
  gap: 12px;
  font-size: 15.5px;
}
.more-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0.92;
}
.more-list i {
  font-size: 18px;
  color: #ffd166;
}

/* ---------- 场景 ---------- */
.scene-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}
.scene-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1.5px solid var(--line);
  background: #fff;
  font: 600 15px var(--font);
  color: var(--ink-2);
  cursor: pointer;
  transition: all 0.15s;
}
.scene-tab i {
  color: var(--c);
}
.scene-tab.active {
  border-color: var(--c);
  background: color-mix(in srgb, var(--c) 10%, #fff);
  color: var(--ink);
}
.scene-stage {
  padding: 36px;
  border-radius: var(--radius);
  background: repeating-linear-gradient(135deg, #fff7ef 0 18px, #fff3e8 18px 36px);
  border: 1px solid #f6e5d6;
}
.scene-panel {
  display: none;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 36px;
  align-items: center;
}
.scene-panel.active {
  display: grid;
  animation: fadeUp 0.35s ease;
}
.scene-text h3 {
  font-size: 28px;
  font-weight: 800;
}
.scene-text p {
  margin: 14px 0 0;
  font-size: 16.5px;
  color: var(--ink-2);
}
.scene-img img {
  border-radius: 16px;
  border: 1px solid #ece5dc;
  box-shadow: var(--shadow);
  background: #fff;
}
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
}

/* ---------- 便当格 ---------- */
.bento {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 20px;
}
.bento-item {
  min-width: 0;
  padding: 28px;
  border-radius: 24px;
  background: var(--soft);
  border: 1px solid var(--line);
}
.bento-code {
  grid-row: span 2;
  background: #1b1c20;
  border-color: #1b1c20;
  color: #d7dae0;
}
.bento-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 17px;
  color: #fff;
}
.bento-label i {
  color: #ffd166;
}
.bento-code pre {
  margin: 22px 0 0;
  overflow-x: auto;
  font: 14px/1.75 "SF Mono", Menlo, Consolas, monospace;
}
.bento-code .k {
  color: #8ab4ff;
}
.bento-code .s {
  color: #9be29b;
}
.bento-code .n {
  color: #ffb86b;
}
.bento-code .p {
  color: #8a8f99;
}
.bento-icon {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  font-size: 24px;
  color: var(--c);
  background: color-mix(in srgb, var(--c) 13%, #fff);
}
.bento-item h4 {
  margin-top: 18px;
  font-size: 19px;
  font-weight: 700;
}
.bento-item p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 15px;
}
.bento-dark {
  background: linear-gradient(135deg, #222328, #2e2f36);
  border-color: #2b2c31;
  color: #fff;
}
.bento-dark p {
  color: #b9bcc4;
}
.bento-dark .bento-icon {
  background: rgba(255, 209, 102, 0.14);
}

/* ---------- 数字 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat {
  padding: 28px 24px;
  border-radius: 22px;
  border: 1px solid var(--line);
  text-align: center;
}
.stat b {
  display: block;
  font-size: 52px;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--red), #ff9a5c);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat span {
  color: var(--muted);
  font-size: 15px;
}

/* ---------- 安装 ---------- */
.install {
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 30px 80px -50px rgba(24, 25, 28, 0.4);
  overflow: hidden;
}
.install-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 10px;
  background: var(--soft);
  border-bottom: 1px solid var(--line);
}
.install-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border: none;
  border-radius: 12px;
  background: transparent;
  font: 600 14.5px var(--font);
  color: var(--muted);
  cursor: pointer;
}
.install-tab.active {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}
.install-panel {
  display: none;
  padding: 26px 28px 30px;
}
.install-panel.active {
  display: block;
}
.install-panel > p {
  margin: 0 0 12px;
  font-size: 15.5px;
}
.install-panel .muted {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14.5px;
}
.code {
  position: relative;
  border-radius: 14px;
  background: #1b1c20;
}
.code pre {
  margin: 0;
  padding: 18px 56px 18px 20px;
  overflow-x: auto;
  color: #e6e7ea;
  font: 13.5px/1.7 "SF Mono", Menlo, Consolas, monospace;
  white-space: pre-wrap;
  word-break: break-all;
}
.copy {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 34px;
  height: 34px;
  border: none;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
}
.copy:hover {
  background: rgba(255, 255, 255, 0.2);
}
.copy.done {
  background: #30a46c;
}

/* ---------- 结尾 ---------- */
.final {
  margin: 96px auto 0;
  padding: 80px 24px 96px;
  text-align: center;
  background: radial-gradient(700px 300px at 50% 0%, #fff1ef, transparent 70%);
}
.final-logo {
  display: inline-block;
  padding: 10px;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 20px 50px -20px rgba(240, 71, 63, 0.5);
}
.final-logo img {
  border-radius: 16px;
}
.final h2 {
  margin-top: 28px;
  font-size: clamp(30px, 4.4vw, 52px);
  font-weight: 800;
}
.final p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 17px;
}

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--line);
  background: #fafafb;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
}
.footer-brand p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14.5px;
  max-width: 280px;
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14.5px;
}
.footer-col h5 {
  margin: 0 0 4px;
  font-size: 14px;
}
.footer-col a {
  color: var(--muted);
  text-decoration: none;
}
.footer-col a:hover {
  color: var(--red);
}
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px 32px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  color: #9a9ea6;
  font-size: 13.5px;
}

/* ---------- 进场动画 ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.js .reveal.in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .float-a,
  .float-b,
  .float-c,
  .ai-lines path {
    animation: none;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .hero-deco {
    display: none;
  }
}
@media (max-width: 960px) {
  .nav-links {
    display: none;
  }
  .ai-card,
  .card,
  .card-flip,
  .scene-panel {
    grid-template-columns: 1fr;
  }
  .ai-card {
    padding: 40px 28px;
  }
  .card,
  .card-flip {
    padding: 36px 0 0 28px;
  }
  .card-copy,
  .card-flip .card-copy {
    order: 0;
    padding-right: 28px;
  }
  .card-flip .card-media img {
    border-radius: 14px 0 0 0;
  }
  .card-pair {
    grid-template-columns: 1fr;
  }
  .bento {
    grid-template-columns: 1fr 1fr;
  }
  .bento-code {
    grid-column: span 2;
    grid-row: auto;
  }
  .stats {
    grid-template-columns: 1fr 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 560px) {
  .hero {
    padding-top: 48px;
  }
  .nav-inner {
    gap: 12px;
  }
  .brand span {
    display: none;
  }
  .btn-sm {
    display: none;
  }
  .ai-diagram {
    height: 260px;
  }
  .node {
    font-size: 12px;
    padding: 7px 10px;
  }
  .node-center {
    font-size: 13px;
  }
  .bento {
    grid-template-columns: 1fr;
  }
  .bento-code {
    grid-column: auto;
  }
  .scene-stage {
    padding: 18px;
  }
  .stat b {
    font-size: 40px;
  }
}