/* ============================================================================
   植迹落地页 · 布局与组件
   令牌全部来自 tokens.css；这里只写结构与表现。
   ========================================================================== */

/* ── 基础 ───────────────────────────────────────────────────────────────── */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  line-height: 1.25;
}

p {
  margin: 0;
}

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

a {
  color: var(--accent-text);
  text-decoration: none;
}

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

b,
strong {
  font-weight: 700;
  color: var(--text);
}

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

::selection {
  background: var(--green-200);
  color: #052e16;
}

/* ── 版式工具 ───────────────────────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--page-x) * 2);
  margin-inline: auto;
  padding-inline: var(--page-x);
}

.section {
  padding-block: var(--section-y);
}

.section--tint {
  background: var(--bg-tint);
}

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

.skip-link {
  position: absolute;
  left: var(--page-x);
  top: -100px;
  z-index: 100;
  padding: 10px 18px;
  border-radius: var(--r-control);
  background: var(--text);
  color: var(--bg);
  transition: top var(--dur-1) var(--ease);
}

.skip-link:focus {
  top: 12px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--accent-text);
}

.eyebrow .icon {
  font-size: 1rem;
  letter-spacing: 0;
}

.eyebrow--pill {
  padding: 6px 14px 6px 12px;
  border-radius: var(--r-pill);
  background: var(--accent-soft);
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-48);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(1.75rem, 1.34rem + 1.7vw, 2.5rem);
  text-wrap: balance;
}

.section-head__lead {
  margin-top: var(--space-16);
  font-size: 1.0625rem;
  color: var(--text-2);
}

.lead {
  font-size: 1.125rem;
}

/* ── 按钮 ───────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  min-height: var(--tap);
  padding: 0 var(--space-20);
  border: 0;
  border-radius: var(--r-control);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--dur-1) var(--ease),
    color var(--dur-1) var(--ease), transform var(--dur-1) var(--ease);
}

.btn--primary {
  background: var(--accent);
  color: var(--on-accent);
}

.btn--primary:hover {
  background: var(--accent-strong);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--line);
}

.btn--ghost:hover {
  background: var(--surface-soft);
}

.btn--sm {
  min-height: 38px;
  padding: 0 var(--space-16);
  font-size: 0.875rem;
}

.btn:active {
  transform: scale(0.98);
}

/* ── 顶栏 ───────────────────────────────────────────────────────────────── */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-2) var(--ease);
}

.nav.is-scrolled {
  border-bottom-color: var(--line);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: var(--space-24);
  min-height: 64px;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-10);
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
}

.nav__brand img {
  width: 32px;
  height: 32px;
  border-radius: 9px;
}

.nav__links {
  display: none;
  gap: var(--space-24);
  margin-inline-start: var(--space-16);
  font-size: 0.9375rem;
}

.nav__links a {
  color: var(--text-2);
  transition: color var(--dur-1) var(--ease);
}

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

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  margin-inline-start: auto;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 0;
  border-radius: var(--r-control);
  background: transparent;
  color: var(--text-2);
  font-size: 1.125rem;
  cursor: pointer;
  transition: background var(--dur-1) var(--ease), color var(--dur-1) var(--ease);
}

.theme-toggle:hover {
  background: var(--surface-soft);
  color: var(--text);
}

.theme-toggle .icon-dark {
  display: none;
}

:root[data-theme="dark"] .theme-toggle .icon-dark {
  display: inline;
}

:root[data-theme="dark"] .theme-toggle .icon-light {
  display: none;
}

@media (min-width: 900px) {
  .nav__links {
    display: flex;
  }
}

/* ── Hero ───────────────────────────────────────────────────────────────── */

.hero {
  position: relative;
  padding-block: var(--space-40) var(--space-64);
  overflow: hidden;
}

.hero__glow {
  position: absolute;
  inset: -30% -10% auto -10%;
  height: 78%;
  background: radial-gradient(
      42% 52% at 22% 42%,
      color-mix(in srgb, var(--accent) 22%, transparent) 0%,
      transparent 72%
    ),
    radial-gradient(
      38% 46% at 82% 22%,
      color-mix(in srgb, var(--accent) 16%, transparent) 0%,
      transparent 70%
    );
  filter: blur(8px);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  display: grid;
  gap: var(--space-48);
  align-items: center;
}

.hero__title {
  font-size: clamp(2.25rem, 1.5rem + 4.2vw, 3.75rem);
  line-height: 1.14;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

.hero__title em {
  font-style: normal;
  color: var(--accent-text);
}

.hero__lead {
  max-width: 34em;
  margin-top: var(--space-20);
  font-size: 1.0625rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-12);
  margin-top: var(--space-32);
}

.store-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  border-radius: var(--r-control);
  transition: transform var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease);
}

.store-badge img {
  height: 100%;
  width: auto;
}

.store-badge--ios img {
  border-radius: 10px;
}

.store-badge--android img {
  height: 52px;
}

.store-badge:hover {
  transform: translateY(-2px);
}

.hero__note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-8);
  margin-top: var(--space-20);
  font-size: 0.8125rem;
  color: var(--text-3);
}

.hero__note .icon {
  font-size: 1rem;
  color: var(--text-3);
}

/* 设备视觉 */

.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  padding-block: var(--space-16);
}

.phone {
  position: relative;
  width: min(300px, 74vw);
  aspect-ratio: 9 / 19.2;
  padding: 9px;
  border-radius: 46px;
  background: linear-gradient(155deg, #fbfdfc 0%, #d9e0da 45%, #f2f6f3 100%);
  box-shadow: var(--shadow-float), 0 0 0 1px rgba(17, 24, 39, 0.06);
}

.phone__screen {
  position: relative;
  height: 100%;
  overflow: hidden;
  border-radius: 38px;
  background: var(--bg-tint);
}

.phone__screen::after {
  /* 灵动岛 */
  content: "";
  position: absolute;
  top: 10px;
  left: 50%;
  translate: -50% 0;
  width: 74px;
  height: 20px;
  border-radius: var(--r-pill);
  background: #05080a;
  z-index: 3;
}

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

.phone.is-shot .phone__shot {
  opacity: 1;
}

.phone.is-shot .sketch {
  opacity: 0;
}

/* 没有真机截图时的示意图：用 2.0 的骨架语言拼一屏首页 */

.sketch {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-tint);
  transition: opacity var(--dur-2) var(--ease);
}

.sketch__head {
  padding: 44px var(--space-16) var(--space-12);
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--accent) 16%, transparent),
    transparent
  );
}

.sketch__title {
  width: 104px;
  height: 15px;
  border-radius: var(--r-pill);
  background: var(--text);
  opacity: 0.82;
}

.sketch__sub {
  width: 148px;
  height: 8px;
  margin-top: var(--space-8);
  border-radius: var(--r-pill);
  background: var(--text-3);
  opacity: 0.55;
}

.sketch__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  padding: 0 var(--space-16);
}

.sketch__grid > span {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  aspect-ratio: 3 / 4.1;
  overflow: hidden;
  border-radius: var(--r-card);
  background: linear-gradient(
    158deg,
    color-mix(in srgb, var(--accent) 24%, var(--surface-soft)),
    color-mix(in srgb, var(--accent) 6%, var(--surface-soft))
  );
}

.sketch__grid > span .icon {
  margin-bottom: var(--space-16);
  font-size: 1.5rem;
  color: color-mix(in srgb, var(--accent-text) 70%, transparent);
}

.sketch__grid > span::after {
  content: "";
  position: absolute;
  left: var(--space-12);
  bottom: var(--space-8);
  width: 48px;
  height: 8px;
  border-radius: var(--r-pill);
  background: #052e16;
  opacity: 0.35;
}

.sketch__nav {
  display: flex;
  align-items: center;
  justify-content: space-around;
  height: 58px;
  margin-top: auto;
  background: color-mix(in srgb, var(--surface) 72%, transparent);
  border-top: 1px solid var(--line);
}

.sketch__nav i {
  width: 20px;
  height: 20px;
  border-radius: var(--space-6);
  background: var(--text-3);
  opacity: 0.4;
}

.sketch__nav i:first-child {
  background: var(--accent);
  opacity: 1;
}

.float {
  display: none;
  position: absolute;
  align-items: center;
  gap: var(--space-12);
  margin: 0;
  padding: var(--space-12) var(--space-16);
  border-radius: var(--r-card);
  background: var(--surface);
  box-shadow: var(--shadow-lift);
  font-size: 0.8125rem;
  color: var(--text-2);
}

.float b {
  display: block;
  font-size: 0.875rem;
  font-family: var(--font-display);
}

.float .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--r-control);
  background: var(--accent-soft);
  color: var(--accent-text);
  font-size: 1.125rem;
}

.float--task {
  top: 16%;
  inset-inline-start: 0;
}

.float--days {
  bottom: 14%;
  inset-inline-end: 0;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.float--days .num {
  font-family: var(--font-num);
  font-size: 2rem;
  line-height: 1.1;
  color: var(--text);
  font-feature-settings: "lnum";
}

@media (min-width: 1040px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 460px);
    gap: var(--space-64);
  }

  .float {
    display: flex;
  }

  .float--task {
    inset-inline-start: -84px;
    top: 14%;
  }

  .float--days {
    inset-inline-end: -28px;
    bottom: 16%;
  }
}

/* ── 能力网格 ───────────────────────────────────────────────────────────── */

.feature-grid {
  display: grid;
  gap: var(--space-16);
  grid-template-columns: 1fr;
}

.feature {
  padding: var(--space-24);
  border-radius: var(--r-card);
  background: var(--surface-soft);
  transition: transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}

.feature__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--r-control);
  background: var(--surface);
  color: var(--accent-text);
  font-size: 1.375rem;
}

.feature h3 {
  margin-top: var(--space-16);
  font-size: 1.125rem;
}

.feature p {
  margin-top: var(--space-8);
  font-size: 0.9375rem;
}

@media (hover: hover) {
  .feature:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lift);
  }
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-20);
  }
}

/* ──「2.0」深色区块 ─────────────────────────────────────────────────────── */

.section--ink {
  background: var(--ink-green);
  color: color-mix(in srgb, #ffffff 68%, transparent);
}

.section--ink h2,
.section--ink b {
  color: #ffffff;
}

.section--ink .eyebrow {
  color: var(--green-200);
}

.design {
  display: grid;
  gap: var(--space-48);
  align-items: start;
}

.design h2 {
  font-size: clamp(1.75rem, 1.34rem + 1.7vw, 2.5rem);
  text-wrap: balance;
}

.design__lead {
  margin-top: var(--space-16);
  font-size: 1.0625rem;
}

.design__list {
  display: grid;
  gap: var(--space-20);
  margin-top: var(--space-32);
}

.design__list li {
  display: flex;
  gap: var(--space-16);
}

.design__list .icon {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--r-control);
  background: color-mix(in srgb, var(--green-500) 22%, transparent);
  color: var(--green-200);
  font-size: 1.25rem;
}

.design__list b {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
}

.design__list span {
  font-size: 0.9375rem;
}

.specimen {
  display: grid;
  gap: var(--space-16);
  grid-template-columns: 1fr 1fr;
}

.specimen__card {
  padding: var(--space-20);
  border-radius: var(--r-card);
  background: color-mix(in srgb, #ffffff 6%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, #ffffff 8%, transparent);
}

.specimen__card--wide {
  grid-column: span 2;
}

.specimen__label {
  display: block;
  margin-bottom: var(--space-12);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: color-mix(in srgb, #ffffff 52%, transparent);
}

.swatches {
  display: flex;
  gap: var(--space-8);
}

.swatches i {
  flex: 1;
  height: 44px;
  border-radius: var(--r-control);
}

/* 色板样张直接用 2.0 的原始色阶，不做二次定义 */
.sw-1 { background: var(--green-500); }
.sw-2 { background: var(--green-600); }
.sw-3 { background: #f5f7f5; }
.sw-4 { background: #243040; }
.sw-5 { background: #111827; }

.radii {
  display: flex;
  align-items: flex-end;
  gap: var(--space-12);
}

/* 圆角样张：4 档，和 AppRadius 一一对应 */
.r-1 { border-radius: var(--r-control); }
.r-2 { border-radius: var(--r-card); }
.r-3 { border-radius: var(--r-sheet); }
.r-4 { border-radius: var(--r-pill); }

.radii i {
  display: block;
  width: 44px;
  height: 44px;
  background: color-mix(in srgb, #ffffff 14%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, #ffffff 20%, transparent);
}

.type-sample {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-16);
}

.type-sample .serif {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: #ffffff;
}

.type-sample .num {
  font-family: var(--font-num);
  font-size: 2.25rem;
  color: var(--green-200);
  font-feature-settings: "lnum";
}

.type-sample .sans {
  font-size: 0.9375rem;
}

.icon-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
  gap: var(--space-8);
  color: color-mix(in srgb, #ffffff 76%, transparent);
}

.icon-wall .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  border-radius: var(--r-control);
  background: color-mix(in srgb, #ffffff 6%, transparent);
  font-size: 1.125rem;
}

@media (min-width: 1000px) {
  .design {
    grid-template-columns: minmax(0, 1fr) minmax(0, 520px);
    gap: var(--space-64);
  }
}

/* ── 界面预览 ───────────────────────────────────────────────────────────── */

.shots {
  position: relative;
  margin-top: var(--space-8);
}

.shots__list {
  display: flex;
  gap: var(--space-16);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: var(--space-4) var(--page-x) var(--space-24);
  margin-inline: calc(var(--page-x) * -1);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.shot {
  flex: none;
  width: min(232px, 62vw);
  scroll-snap-align: center;
}

/* 和首屏 .phone 同一套手机壳：留出边框，截图本身已带状态栏与灵动岛，
   所以这里只做外壳，不再叠加岛，免得和截图的岛错位。 */
.shot__frame {
  position: relative;
  padding: 8px;
  border-radius: 34px;
  background: linear-gradient(155deg, #fbfdfc 0%, #d9e0da 45%, #f2f6f3 100%);
  box-shadow: var(--shadow-float), 0 0 0 1px rgba(17, 24, 39, 0.06);
}

.shot__screen {
  position: relative;
  overflow: hidden;
  aspect-ratio: 9 / 19.5;
  border-radius: 27px;
  background: var(--surface-soft);
}

.shot__screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
}

.shot.is-shot .shot__screen img {
  opacity: 1;
}

.shot__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-12);
  background: linear-gradient(
    165deg,
    color-mix(in srgb, var(--accent) 12%, var(--surface-soft)),
    var(--surface-soft)
  );
  color: var(--text-3);
}

.shot.is-shot .shot__placeholder {
  display: none;
}

.shot__placeholder .icon {
  font-size: 1.75rem;
  color: color-mix(in srgb, var(--accent-text) 60%, transparent);
}

.shot__placeholder span {
  font-size: 0.8125rem;
}

.shot__label {
  display: block;
  margin-top: var(--space-12);
  text-align: center;
  font-size: 0.875rem;
  font-weight: 700;
  font-family: var(--font-display);
  color: var(--text);
}

.shot__caption {
  display: block;
  margin-top: var(--space-2);
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-3);
}

.shots__hint {
  margin-top: var(--space-4);
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-3);
}

/* ── 更多能力 ───────────────────────────────────────────────────────────── */

.more-grid {
  display: grid;
  gap: var(--space-16);
  grid-template-columns: 1fr;
}

.more {
  display: flex;
  gap: var(--space-16);
  padding: var(--space-20);
  border-radius: var(--r-card);
  background: var(--surface);
}

.more__icon {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--r-control);
  background: var(--accent-soft);
  color: var(--accent-text);
  font-size: 1.25rem;
}

.more h3 {
  font-size: 1rem;
}

.more p {
  margin-top: var(--space-4);
  font-size: 0.875rem;
}

@media (min-width: 640px) {
  .more-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .more-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ── 下载 ───────────────────────────────────────────────────────────────── */

.download {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: var(--space-32);
  padding: clamp(28px, 5vw, 56px);
  border-radius: var(--r-sheet);
  /* 白字压在 #22C55E 上只有 2.2:1，所以底色从 16A34A 起跳，
     品牌亮绿改成右上角的高光 —— 绿还在，字读得清。 */
  background: linear-gradient(135deg, #16a34a 0%, #12813f 46%, #0b4526 100%);
  color: color-mix(in srgb, #ffffff 92%, transparent);
}

.download::before {
  content: "";
  position: absolute;
  inset: -40% -20% -40% 35%;
  background:
    radial-gradient(42% 46% at 76% 22%, rgba(34, 197, 94, 0.85) 0%, transparent 68%),
    radial-gradient(46% 50% at 88% 78%, rgba(255, 255, 255, 0.16) 0%, transparent 70%);
  pointer-events: none;
}

.download__icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  box-shadow: 0 12px 28px -12px rgba(4, 24, 12, 0.6);
}

.download h2 {
  margin-top: var(--space-20);
  color: #ffffff;
  font-size: clamp(1.625rem, 1.3rem + 1.4vw, 2.25rem);
  text-wrap: balance;
}

.download p {
  margin-top: var(--space-12);
  max-width: 30em;
  color: color-mix(in srgb, #ffffff 86%, transparent);
}

.download__badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-12);
  margin-top: var(--space-24);
}

.download .btn {
  background: #ffffff;
  color: #0b3b22;
}

.download .btn:hover {
  background: var(--green-50);
}

.download__qr {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  justify-self: start;
  padding: var(--space-16);
  border-radius: var(--r-card);
  background: #ffffff;
  color: #0b3b22;
  box-shadow: 0 18px 40px -20px rgba(4, 24, 12, 0.7);
}

.download__qr img {
  width: 132px;
  height: 132px;
  border-radius: var(--space-8);
}

.download__qr span {
  max-width: 8em;
  font-size: 0.875rem;
  font-weight: 700;
  font-family: var(--font-display);
}

@media (min-width: 860px) {
  .download {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .download__qr {
    justify-self: end;
  }
}

/* ── 常见问题 ───────────────────────────────────────────────────────────── */

.faq {
  max-width: 780px;
  margin-inline: auto;
}

.faq__item {
  border-radius: var(--r-card);
  /* 这一节的底色已经是 --bg-tint，卡片必须用 --surface 才分得出来 */
  background: var(--surface);
}

.faq__item + .faq__item {
  margin-top: var(--space-12);
}

.faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  min-height: var(--tap);
  padding: var(--space-16) var(--space-20);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

.faq__item summary::-webkit-details-marker {
  display: none;
}

.faq__item summary .icon {
  flex: none;
  font-size: 1.125rem;
  color: var(--text-2);
  transition: transform var(--dur-2) var(--ease);
}

.faq__item[open] summary .icon {
  transform: rotate(180deg);
}

.faq__body {
  padding: 0 var(--space-20) var(--space-20);
  font-size: 0.9375rem;
}

/* ── 页脚 ───────────────────────────────────────────────────────────────── */

.footer {
  padding-block: var(--space-48);
  border-top: 1px solid var(--line);
}

.footer__inner {
  display: grid;
  gap: var(--space-32);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text);
}

.footer__brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}

.footer__slogan {
  margin-top: var(--space-12);
  font-size: 0.875rem;
  max-width: 24em;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8) var(--space-24);
  font-size: 0.875rem;
}

.footer__links a {
  color: var(--text-2);
}

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

.footer__legal {
  margin-top: var(--space-16);
  font-size: 0.8125rem;
  color: var(--text-3);
}

@media (min-width: 860px) {
  .footer__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
  }

  .footer__meta {
    text-align: right;
  }

  .footer__links {
    justify-content: flex-end;
  }
}

/* ── 动效收敛 ───────────────────────────────────────────────────────────── */

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }

  .feature:hover,
  .store-badge:hover {
    transform: none;
  }
}