/* ==========================================================================
   小青蛙画布 XQWCanvas · 落地页样式
   色彩系统严格限定 4 色：#0F172A / #3B82F6 / #06B6D4 / #F7F9FC
   ========================================================================== */

:root {
  --bg: #0F172A;
  --blue: #3B82F6;
  --cyan: #06B6D4;
  --fg: #F7F9FC;

  --fg65: rgba(247, 249, 252, 0.65);
  --fg45: rgba(247, 249, 252, 0.45);
  --line: rgba(247, 249, 252, 0.12);
  --lineStrong: rgba(247, 249, 252, 0.24);
  --card: rgba(247, 249, 252, 0.04);

  --grad: linear-gradient(135deg, #3B82F6 0%, #06B6D4 100%);
  --gradSoft: linear-gradient(135deg, rgba(59, 130, 246, 0.16) 0%, rgba(6, 182, 212, 0.16) 100%);

  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
    "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --wrap: 1180px;
  --pad: clamp(20px, 5vw, 48px);
  --radius: 16px;
  --headerH: 64px;
}

/* --- 基础 ---------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--headerH) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.25;
  letter-spacing: 0.02em;
  font-weight: 700;
  text-wrap: balance;
}

p {
  margin: 0;
}

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

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.skipLink {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translate(-50%, -140%);
  z-index: 100;
  padding: 10px 18px;
  background: var(--fg);
  color: var(--bg);
  font-size: 14px;
  font-weight: 700;
  border-radius: 0 0 10px 10px;
  transition: transform 0.18s ease;
}

.skipLink:focus-visible {
  transform: translate(-50%, 0);
}

/* --- 通用元件 ------------------------------------------------------------ */

.gradText {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}

.badge {
  display: inline-block;
  margin-bottom: 22px;
  padding: 6px 14px;
  border: 1px solid rgba(59, 130, 246, 0.45);
  border-radius: 999px;
  background: var(--gradSoft);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--fg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 26px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease;
}

.btnIcon {
  width: 18px;
  height: 18px;
  flex: none;
}

.btnPrimary {
  background: var(--grad);
  color: var(--bg);
  box-shadow: 0 10px 30px -12px rgba(6, 182, 212, 0.7);
}

.btnPrimary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px -12px rgba(6, 182, 212, 0.85);
}

.btnGhost {
  background: rgba(247, 249, 252, 0.06);
  border-color: var(--lineStrong);
  color: var(--fg);
}

.btnGhost:hover {
  transform: translateY(-2px);
  background: rgba(247, 249, 252, 0.1);
}

.btnSmall {
  padding: 9px 18px;
  font-size: 0.875rem;
  border-radius: 10px;
}

.btnBlock {
  width: 100%;
}

.chipRow {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.chip {
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--fg65);
  font-variant-numeric: tabular-nums;
}

.chipGrad {
  border-color: transparent;
  background: var(--grad);
  color: var(--bg);
}

/* --- 页头 ---------------------------------------------------------------- */

.siteHeader {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 23, 42, 0.86);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
}

.siteHeaderInner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: var(--headerH);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.brandName {
  display: flex;
  flex-direction: column;
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
}

.brandName em {
  font-style: normal;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--fg65);
}

.siteNav {
  display: none;
  margin-inline-start: auto;
  gap: 28px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--fg65);
}

.siteNav a:hover {
  color: var(--fg);
}

.siteHeaderInner .btnSmall {
  margin-inline-start: auto;
}

/* --- Hero ---------------------------------------------------------------- */

.hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(48px, 7vw, 88px) clamp(56px, 8vw, 104px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.heroGlow {
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 120%;
  z-index: -1;
  background:
    radial-gradient(48% 46% at 18% 8%, rgba(59, 130, 246, 0.26) 0%, rgba(15, 23, 42, 0) 68%),
    radial-gradient(42% 44% at 88% 22%, rgba(6, 182, 212, 0.22) 0%, rgba(15, 23, 42, 0) 70%);
}

.heroInner {
  display: grid;
  gap: clamp(32px, 5vw, 56px);
  align-items: center;
}

.h1Cn {
  display: block;
  font-size: clamp(2.5rem, 6.4vw, 4.5rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: 0.04em;
}

.h1En {
  display: block;
  margin-top: 12px;
  font-size: clamp(0.9375rem, 1.9vw, 1.25rem);
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--fg65);
}

.claim {
  margin-top: 26px;
  font-size: clamp(1.5rem, 3.4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.subClaim {
  margin-top: 14px;
  font-size: 1.0625rem;
  color: var(--fg65);
}

.ctaRow {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.heroNote {
  margin-top: 18px;
  font-size: 0.8125rem;
  color: var(--fg65);
}

.heroFigure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  box-shadow: 0 40px 80px -40px rgba(6, 182, 212, 0.45);
}

/* --- 区块骨架 ------------------------------------------------------------ */

.section {
  padding-block: clamp(64px, 8.5vw, 112px);
}

.sectionAlt {
  background: var(--card);
  border-block: 1px solid var(--line);
}

.sectionHead {
  max-width: 46rem;
  margin-bottom: clamp(36px, 5vw, 56px);
}

.sectionHead h2 {
  margin-top: 14px;
  font-size: clamp(1.5rem, 3.2vw, 2.125rem);
  font-weight: 700;
  letter-spacing: 0.03em;
}

.lede {
  margin-top: 16px;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--fg65);
}

.sectionHeadCenter {
  max-width: 40rem;
  margin-inline: auto;
  text-align: center;
}

/* --- 痛点 ---------------------------------------------------------------- */

.painList {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.painItem {
  position: relative;
  padding: clamp(22px, 3vw, 30px);
  background: var(--bg);
}

.painIndex {
  display: block;
  margin-bottom: 8px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--fg45);
  font-variant-numeric: tabular-nums;
}

.painItem h3 {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.painItem p {
  margin-top: 10px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--fg65);
}

.verdict {
  position: relative;
  margin-top: clamp(28px, 4vw, 40px);
  padding: 20px 24px 20px 28px;
  background: var(--card);
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.65;
}

.verdict::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--grad);
}

/* --- 定位 ---------------------------------------------------------------- */

.goalGrid {
  display: grid;
  gap: 20px;
}

.goalCard {
  padding: clamp(24px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
}

.goalCard h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.goalCard h3::before {
  content: "";
  display: block;
  width: 34px;
  height: 3px;
  margin-bottom: 16px;
  border-radius: 2px;
  background: var(--grad);
}

.goalCard p {
  margin-top: 12px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--fg65);
}

/* --- 核心功能 ------------------------------------------------------------ */

.featureSplit {
  display: grid;
  gap: clamp(24px, 3.5vw, 40px);
  align-items: center;
  padding-bottom: clamp(32px, 4vw, 48px);
  margin-bottom: clamp(32px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
}

.featureFigure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
}

.featureTag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.feature h3,
.featureBody h3 {
  margin-top: 10px;
  font-size: clamp(1.1875rem, 2.2vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.03em;
}

.feature p,
.featureBody p {
  margin-top: 14px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--fg65);
}

.featureBody p {
  font-size: 1rem;
}

.nodeGroups {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.nodeGroups li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
}

.nodeGroups b {
  font-size: 0.9375rem;
  font-weight: 700;
}

.nodeGroups span {
  font-size: 0.8125rem;
  color: var(--fg65);
  font-variant-numeric: tabular-nums;
}

.featureGrid {
  display: grid;
  gap: 20px;
}

.featureGrid .feature {
  display: flex;
  flex-direction: column;
  padding: clamp(24px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.featureGrid .feature .chipRow {
  margin-top: auto;
  padding-top: 22px;
}

.statLine {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 10px;
  margin-top: auto;
  padding-top: 22px;
  font-variant-numeric: tabular-nums;
}

.statValue {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--fg);
}

.statValueCyan {
  color: var(--cyan);
}

.statArrow {
  color: var(--fg45);
}

.statNote {
  flex-basis: 100%;
  font-size: 0.8125rem;
  color: var(--fg65);
}

.featureNote {
  margin-top: auto;
  padding-top: 20px;
  font-size: 0.875rem;
  color: var(--fg65);
}

/* --- 架构 ---------------------------------------------------------------- */

.arch {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.archLayer {
  position: relative;
  display: grid;
  gap: 4px;
  padding: clamp(20px, 2.6vw, 26px) clamp(20px, 3vw, 30px);
  background: var(--bg);
}

.archLayer::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--grad);
  opacity: 0.55;
}

.archLayerLast::before {
  opacity: 1;
}

.archLabel {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.archStack {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.archDesc {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--fg65);
}

.chipRowWide {
  margin-top: 24px;
}

/* --- 场景 ---------------------------------------------------------------- */

.sceneGrid {
  display: grid;
  gap: 20px;
}

.sceneCard {
  display: flex;
  flex-direction: column;
  padding: clamp(24px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.sceneCard h3 {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.sceneCard > p:not(.sceneFlow) {
  margin-top: 12px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--fg65);
}

.sceneFlow {
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--fg65);
}

.sceneFlow span {
  display: block;
}

.sceneFlow span:last-child {
  color: var(--fg);
  font-weight: 600;
}

/* --- 数据锚点 ------------------------------------------------------------ */

.numberGrid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.numberItem {
  padding: clamp(24px, 3vw, 34px);
  background: var(--bg);
}

.numberItem dt {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--fg65);
}

.numberItem dd {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 10px 0 0;
  font-variant-numeric: tabular-nums;
}

.numberValue {
  font-size: clamp(2.75rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.numberUnit {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--fg65);
}

/* --- 下载 ---------------------------------------------------------------- */

.download {
  position: relative;
  overflow: hidden;
}

.download::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(52% 60% at 50% 0%, rgba(59, 130, 246, 0.18) 0%, rgba(15, 23, 42, 0) 70%);
  pointer-events: none;
}

.downloadGrid {
  display: grid;
  gap: 20px;
  max-width: 52rem;
  margin-inline: auto;
}

.downloadCard {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(26px, 3.4vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.downloadCard::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--grad);
}

.downloadCard h3 {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.downloadReq {
  margin-top: 10px;
  font-size: 0.9375rem;
  color: var(--fg65);
}

.downloadCard .btnBlock {
  margin-top: 26px;
}

.downloadNotes {
  display: grid;
  gap: 14px;
  max-width: 52rem;
  margin: clamp(24px, 3vw, 32px) auto 0;
}

.downloadNote {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--fg65);
}

.downloadNote strong {
  color: var(--fg);
  font-weight: 700;
}

.downloadMore {
  margin-top: 26px;
  text-align: center;
  font-size: 0.9375rem;
}

.downloadMore a {
  color: var(--cyan);
  font-weight: 600;
  border-bottom: 1px solid rgba(6, 182, 212, 0.4);
  padding-bottom: 2px;
}

.downloadMore a:hover {
  border-bottom-color: var(--cyan);
}

/* --- 更新日志 ------------------------------------------------------------ */

.logList {
  display: grid;
  gap: 20px;
  max-width: 60rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.logCard {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

/* 悬停与展开态都提一档边框亮度；展开时左侧竖线给到满亮，作为「当前打开」的标记 */
.logCard:hover,
.logCard:has(.logDetails[open]) {
  border-color: var(--lineStrong);
}

.logCard::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--grad);
  opacity: 0.5;
  transition: opacity 0.2s ease;
}

.logCard:first-child::before,
.logCard:has(.logDetails[open])::before {
  opacity: 1;
}

/* summary 即卡片头：默认折叠，只露出这一行；padding 放进来，整张卡片都能点 */
.logHead {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  padding: clamp(20px, 2.6vw, 26px) clamp(24px, 3vw, 32px) clamp(20px, 2.6vw, 26px)
    clamp(28px, 3.2vw, 36px);
  cursor: pointer;
  list-style: none;
  -webkit-tap-highlight-color: transparent;
}

.logHead::-webkit-details-marker {
  display: none;
}

.logHead::marker {
  content: "";
}

/* 卡片被 overflow 裁切，聚焦框改画在内侧 */
.logHead:focus-visible {
  outline-offset: -3px;
  border-radius: 12px;
}

.logHead:hover .logArrow {
  border-color: var(--cyan);
}

.logVersion {
  font-size: 1.375rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.logState {
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--fg65);
}

.logStateWip {
  border-color: transparent;
  background: var(--grad);
  color: var(--bg);
}

.logDate {
  margin-left: auto;
  font-size: 0.8125rem;
  color: var(--fg45);
  font-variant-numeric: tabular-nums;
}

/* 展开箭头：纯 CSS 画的 V 形，折叠朝下、展开朝上 */
.logArrow {
  flex: none;
  width: 8px;
  height: 8px;
  margin-left: 2px;
  border-right: 1.5px solid var(--fg45);
  border-bottom: 1.5px solid var(--fg45);
  transform: translateY(-2px) rotate(45deg);
  transition: transform 0.22s ease, border-color 0.2s ease;
}

.logDetails[open] > .logHead .logArrow {
  transform: translateY(1px) rotate(-135deg);
}

.logBody {
  display: grid;
  min-width: 0;
  padding: 20px clamp(24px, 3vw, 32px) clamp(22px, 2.8vw, 30px) clamp(28px, 3.2vw, 36px);
  border-top: 1px solid var(--line);
  animation: logBodyIn 0.22s ease both;
}

@keyframes logBodyIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.logGroup + .logGroup {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.logGroupTitle {
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.logItems {
  display: grid;
  gap: 9px;
  margin-top: 12px;
}

.logItems li {
  position: relative;
  padding-left: 15px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--fg65);
  overflow-wrap: break-word;
}

.logItems li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 0.62em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--fg45);
}

.logItems strong {
  color: var(--fg);
  font-weight: 700;
}

.logItems code {
  padding: 1px 5px;
  border-radius: 5px;
  background: var(--line);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  color: var(--fg);
  overflow-wrap: anywhere;
}

/* --- 反馈问题 ------------------------------------------------------------ */

.feedbackGrid {
  display: grid;
  gap: 20px;
  max-width: 52rem;
  margin-inline: auto;
}

.feedbackCard {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(24px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  transition: transform 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.feedbackCard:hover {
  transform: translateY(-2px);
  border-color: var(--lineStrong);
  background: rgba(247, 249, 252, 0.06);
}

.feedbackIcon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--gradSoft);
  color: var(--cyan);
}

.feedbackIcon svg {
  width: 20px;
  height: 20px;
}

.feedbackCard h3 {
  font-size: 1.125rem;
  letter-spacing: 0.03em;
}

.feedbackCard p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--fg65);
}

.feedbackAction {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: auto;
  padding-top: 6px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--cyan);
}

.feedbackAction svg {
  width: 16px;
  height: 16px;
  transition: transform 0.18s ease;
}

.feedbackCard:hover .feedbackAction svg {
  transform: translateX(3px);
}

.feedbackTip {
  max-width: 52rem;
  margin: clamp(24px, 3vw, 32px) auto 0;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--fg65);
  text-align: center;
}

/* --- 页脚 ---------------------------------------------------------------- */

.siteFooter {
  border-top: 1px solid var(--line);
}

.closingBand {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: clamp(240px, 32vw, 380px);
  overflow: hidden;
}

.closingBand img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

.closingBand::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(15, 23, 42, 0.94) 0%, rgba(15, 23, 42, 0.72) 55%, rgba(15, 23, 42, 0.45) 100%);
}

.closingText {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(32px, 5vw, 64px) var(--pad);
  font-size: clamp(1.5rem, 3.6vw, 2.5rem);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: 0.04em;
}

.footerInner {
  display: grid;
  gap: 36px;
  padding-block: clamp(40px, 5vw, 64px);
  border-top: 1px solid var(--line);
}

.footerDesc {
  margin-top: 16px;
  max-width: 30rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--fg65);
}

.footerNavTitle {
  margin: 0 0 14px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.footerNav ul {
  display: grid;
  gap: 10px;
  font-size: 0.9375rem;
}

.footerNav a {
  color: var(--fg65);
}

.footerNav a:hover {
  color: var(--fg);
}

.footerBottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 22px 32px;
  border-top: 1px solid var(--line);
  font-size: 0.8125rem;
  color: var(--fg65);
}

/* --- 响应式 -------------------------------------------------------------- */

@media (min-width: 560px) {
  .painList,
  .numberGrid {
    grid-template-columns: repeat(2, 1fr);
  }

  .painItem:last-child {
    grid-column: 1 / -1;
  }

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

@media (min-width: 720px) {
  .goalGrid,
  .sceneGrid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .goalCard:last-child,
  .sceneCard:last-child {
    grid-column: 1 / -1;
  }

  .archLayer {
    grid-template-columns: 8rem 12rem 1fr;
    align-items: baseline;
    gap: 16px;
  }

  .footerInner {
    grid-template-columns: 1.6fr 1fr;
  }
}

@media (min-width: 860px) {
  .siteNav {
    display: flex;
  }

  .siteHeaderInner .btnSmall {
    margin-inline-start: 0;
  }

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

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

@media (min-width: 960px) {
  .heroInner {
    grid-template-columns: 1.02fr 1fr;
  }

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

  .goalCard:last-child,
  .sceneCard:last-child {
    grid-column: auto;
  }

  .featureSplit {
    grid-template-columns: 1.15fr 0.85fr;
  }

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

/* --- 动效降级 ------------------------------------------------------------ */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .btnPrimary:hover,
  .btnGhost:hover {
    transform: none;
  }
}

/* --- 强制色彩模式 -------------------------------------------------------- */

@media (forced-colors: active) {
  .gradText,
  .numberValue,
  .logVersion {
    background: none;
    color: CanvasText;
    -webkit-text-fill-color: CanvasText;
  }

  .chipGrad,
  .btnPrimary,
  .logStateWip {
    background: ButtonFace;
    color: ButtonText;
  }
}