/* =========================================================
   TSK Fitness · 官网样式
   暗色深空底 + 品牌紫蓝渐变（#2D1B69 → #4A90D9）
   ========================================================= */

/* ---------- 字体 ---------- */
@font-face {
  font-family: "Archivo";
  src: url("../fonts/archivo-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  font-style: normal;
}
@font-face {
  font-family: "Bebas";
  src: url("../fonts/bebas-latin.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
  font-style: normal;
}

/* ---------- 变量 ---------- */
:root {
  --bg: #07060f;
  --bg-2: #0a0814;
  --panel: #100d1c;
  --panel-2: #151125;
  --line: rgba(255, 255, 255, 0.09);
  --line-2: rgba(255, 255, 255, 0.16);
  --txt: #f3f1fb;
  --dim: #a8a3bf;
  --dim-2: #77728c;
  --v: #7c5cff;
  --v-2: #9c7bf2;
  --b: #4a90d9;
  --b-2: #8faeff;
  --grad: linear-gradient(118deg, #9c7bf2 0%, #7c5cff 46%, #4a90d9 100%);
  --grad-soft: linear-gradient(118deg, rgba(156, 123, 242, 0.16), rgba(74, 144, 217, 0.16));
  --wrap: 1200px;
  --r: 18px;
  --hdr-h: 74px;
  --ease: cubic-bezier(0.22, 0.68, 0, 1);
}

/* ---------- 基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: "Archivo", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.is-locked {
  overflow: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
h1,
h2,
h3,
p,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}
ul,
ol {
  padding: 0;
  list-style: none;
}
::selection {
  background: rgba(124, 92, 255, 0.4);
  color: #fff;
}
:focus-visible {
  outline: 2px solid var(--b-2);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}
section[id] {
  scroll-margin-top: calc(var(--hdr-h) + 10px);
}

/* ---------- 通用按钮 ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 50px;
  padding: 0 26px;
  border: 0;
  border-radius: 999px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  isolation: isolate;
  transition: translate 0.35s var(--ease), scale 0.2s var(--ease),
    box-shadow 0.35s var(--ease), background-color 0.3s, border-color 0.3s,
    color 0.3s;
}
/* 内容置于涟漪之上 */
.btn > * {
  position: relative;
  z-index: 1;
}
.btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.35s var(--ease);
}
.btn--primary {
  color: #fff;
  background: var(--grad);
  background-size: 160% 100%;
  box-shadow: 0 10px 30px -10px rgba(124, 92, 255, 0.75);
}
.btn--primary:hover {
  background-position: 100% 0;
  translate: 0 -2px;
  box-shadow: 0 16px 40px -12px rgba(124, 92, 255, 0.85);
}
.btn--primary:hover svg {
  transform: translateX(3px);
}
.btn--ghost {
  color: var(--txt);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-2);
}
.btn--ghost:hover {
  border-color: rgba(156, 123, 242, 0.6);
  background: rgba(124, 92, 255, 0.14);
  translate: 0 -2px;
}
/* 按下时轻微回缩 */
.btn:active {
  translate: 0 0;
  scale: 0.955;
  transition-duration: 0.35s, 0.14s, 0.2s, 0.2s, 0.2s, 0.2s;
}
.btn--sm {
  height: 40px;
  padding: 0 18px;
  font-size: 13.5px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--line-2);
  color: var(--txt);
}
.btn--sm:hover {
  background: var(--grad);
  border-color: transparent;
}
/* 点击涟漪（JS 动态插入） */
.btn .ripple {
  position: absolute;
  z-index: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.42);
  transform: translate(-50%, -50%) scale(0);
  pointer-events: none;
  animation: btnRipple 0.62s var(--ease) forwards;
}
.btn--ghost .ripple {
  background: rgba(156, 123, 242, 0.34);
}
@keyframes btnRipple {
  to {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0;
  }
}

/* ---------- 顶部导航 ---------- */
.hdr {
  position: fixed;
  inset: 0 0 auto;
  z-index: 90;
  height: var(--hdr-h);
  display: flex;
  align-items: center;
  transition: background-color 0.4s, backdrop-filter 0.4s, border-color 0.4s,
    transform 0.45s var(--ease);
  border-bottom: 1px solid transparent;
  will-change: transform;
}
.hdr.is-scrolled {
  background: rgba(7, 6, 15, 0.78);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line);
}
/* 下滚收起，上滚立即回归 */
.hdr.is-hidden {
  transform: translateY(-100%);
}
/* 首屏入场（只动 opacity/translateY，避免与 .hdr 的 transform 冲突） */
.hdr__in {
  animation: hdrIn 0.75s var(--ease) 0.05s both;
}
@keyframes hdrIn {
  from {
    opacity: 0;
    translate: 0 -12px;
  }
  to {
    opacity: 1;
    translate: 0 0;
  }
}
.hdr__in {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: none;
}
.brand__mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: var(--grad);
  box-shadow: 0 6px 20px -6px rgba(124, 92, 255, 0.8);
}
.brand__mark svg {
  width: 22px;
  height: 22px;
}
.brand__mark--sm {
  width: 34px;
  height: 34px;
  border-radius: 10px;
}
.brand__mark--sm svg {
  width: 20px;
  height: 20px;
}
.brand__txt {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand__txt strong {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.1em;
}
.brand__txt em {
  font-style: normal;
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--dim-2);
}
.nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
/* 跟随/滚动联动的指示块，位置与宽度由 JS 通过 left/width 过渡实现 Morph */
.nav__pill {
  position: absolute;
  top: 50%;
  left: 0;
  width: 0;
  height: 32px;
  border-radius: 999px;
  background: rgba(124, 92, 255, 0.16);
  border: 1px solid rgba(156, 123, 242, 0.34);
  translate: 0 -50%;
  opacity: 0;
  pointer-events: none;
  transition: left 0.42s var(--ease), width 0.42s var(--ease),
    opacity 0.3s var(--ease);
}
.nav__pill.is-on {
  opacity: 1;
}
.nav a {
  position: relative;
  z-index: 1;
  padding: 8px 13px;
  font-size: 14px;
  color: var(--dim);
  border-radius: 8px;
  transition: color 0.25s, translate 0.25s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--v-2);
  opacity: 0;
  transform: translate(-50%, 4px);
  transition: opacity 0.25s, transform 0.25s;
}
.nav a:hover {
  color: #fff;
  translate: 0 -1px;
}
.nav a:active {
  scale: 0.96;
}
.nav a.is-active {
  color: #fff;
}
.nav a:hover::after,
.nav a.is-active::after {
  opacity: 1;
  transform: translate(-50%, 0);
}
.hdr__act {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}
.lang {
  height: 36px;
  min-width: 44px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--dim);
  font-family: "Bebas", "Archivo", sans-serif;
  font-size: 14px;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s, background-color 0.25s,
    scale 0.2s var(--ease);
}
.lang:hover {
  color: #fff;
  border-color: rgba(156, 123, 242, 0.65);
  background: rgba(124, 92, 255, 0.12);
  scale: 1.04;
}
.lang:active {
  scale: 0.94;
}
.burger {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line-2);
  border-radius: 11px;
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: scale 0.2s var(--ease), border-color 0.25s;
}
.burger:hover {
  border-color: rgba(156, 123, 242, 0.65);
}
.burger:active {
  scale: 0.94;
}
.burger span {
  position: absolute;
  left: 11px;
  width: 16px;
  height: 1.6px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.2s;
}
.burger span:nth-child(1) {
  top: 16px;
}
.burger span:nth-child(2) {
  top: 22px;
}
.burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(3px) rotate(45deg);
}
.burger[aria-expanded="true"] span:nth-child(2) {
  transform: translateY(-3px) rotate(-45deg);
}

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  padding: calc(var(--hdr-h) + 44px) 0 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
}
.orb--v {
  width: 620px;
  height: 620px;
  top: -220px;
  right: -80px;
  background: radial-gradient(circle, rgba(124, 92, 255, 0.85), transparent 68%);
  animation: drift 18s ease-in-out infinite alternate;
}
.orb--b {
  width: 520px;
  height: 520px;
  bottom: -160px;
  left: -140px;
  background: radial-gradient(circle, rgba(74, 144, 217, 0.7), transparent 68%);
  animation: drift 22s ease-in-out infinite alternate-reverse;
}
.gridlines {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 74px 74px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 20%, transparent 78%);
}
@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(-40px, 50px, 0) scale(1.12);
  }
}
.hero__grid {
  position: relative;
  display: grid;
  /* 占满头图与底部跑马灯之间的剩余高度，并让主内容垂直居中 */
  flex: 1;
  align-content: center;
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
  align-items: center;
  gap: 30px;
  padding-bottom: 32px;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Bebas", "Archivo", sans-serif;
  font-size: 13px;
  letter-spacing: 0.28em;
  color: var(--dim-2);
  text-transform: uppercase;
}
.eyebrow span:first-child {
  color: var(--v-2);
}
.hero__copy .eyebrow {
  color: var(--b-2);
  opacity: 0.9;
}
h1 {
  margin: 18px 0 0;
  font-size: clamp(2.5rem, 5.2vw, 4.8rem);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.02em;
}
h1 em {
  font-style: normal;
  white-space: nowrap;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede {
  margin-top: 22px;
  max-width: 33em;
  color: var(--dim);
  font-size: 16.5px;
  line-height: 1.85;
}
.lede--wide {
  max-width: 44em;
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}
.chips li {
  padding: 7px 15px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--dim);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}
.hero__art {
  position: relative;
  /* 按视口高度反推产品图宽度：大屏放大填充首屏，矮屏自动收缩 */
  width: 100%;
  width: min(100%, calc((100svh - 260px) * 0.912));
  margin-inline: auto;
  aspect-ratio: 620 / 680;
  display: grid;
  place-items: center;
}
.artglow {
  position: absolute;
  inset: 8% 4%;
  background: radial-gradient(circle at 52% 46%, rgba(124, 92, 255, 0.4), transparent 62%);
  filter: blur(24px);
}
.device {
  position: relative;
  width: 100%;
  height: auto;
  max-height: 74vh;
  filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.6));
  animation: float 7s ease-in-out infinite;
}
@keyframes float {
  0%,
  100% {
    transform: translateY(-6px);
  }
  50% {
    transform: translateY(8px);
  }
}
.ring {
  transform-box: fill-box;
  transform-origin: center;
  animation: spin 46s linear infinite;
}
.ring--slow {
  animation-duration: 72s;
  animation-direction: reverse;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.led {
  animation: blink 2.4s ease-in-out infinite;
}
@keyframes blink {
  0%,
  100% {
    opacity: 0.35;
  }
  50% {
    opacity: 1;
  }
}
.floatcard {
  position: absolute;
  padding: 14px 16px;
  border-radius: 15px;
  border: 1px solid var(--line-2);
  background: rgba(16, 13, 28, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 20px 50px -24px rgba(0, 0, 0, 0.9);
}
.floatcard__k {
  display: block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--dim-2);
}
.floatcard--a {
  top: 9%;
  left: -2%;
  width: 168px;
}
.floatcard--a svg {
  width: 100%;
  height: 40px;
  margin: 6px 0 2px;
  overflow: visible;
}
.floatcard__v {
  font-family: "Bebas", "Archivo", sans-serif;
  font-size: 30px;
  line-height: 1;
  letter-spacing: 0.03em;
}
.floatcard__v small {
  font-size: 13px;
  margin-left: 3px;
  color: var(--dim);
}
.floatcard--b {
  right: 0;
  bottom: 12%;
  min-width: 196px;
}
.floatcard__row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 4px;
}
.floatcard__row b {
  font-family: "Bebas", "Archivo", sans-serif;
  font-size: 24px;
  letter-spacing: 0.04em;
}
.floatcard__row span {
  font-size: 11.5px;
  color: var(--dim-2);
}
.floatcard__row i {
  flex: 1;
  height: 1px;
  margin: 0 6px;
  background: var(--line-2);
  align-self: center;
}

/* 跑马灯 */
.ticker {
  position: relative;
  margin-top: auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
}
.ticker__track {
  display: flex;
  align-items: center;
  gap: 30px;
  width: max-content;
  padding: 15px 0;
  animation: marquee 32s linear infinite;
}
.ticker__track span {
  font-family: "Bebas", "Archivo", sans-serif;
  font-size: 15px;
  letter-spacing: 0.3em;
  color: rgba(255, 255, 255, 0.42);
  white-space: nowrap;
}
.ticker__track i {
  color: var(--v-2);
  font-style: normal;
}
@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}
/* 指针停留时暂停跑马灯，便于阅读 */
.ticker:hover .ticker__track {
  animation-play-state: paused;
}

/* ---------- 区块通用 ---------- */
.sec {
  position: relative;
  padding: 112px 0;
}
.sec--alt {
  background: linear-gradient(180deg, transparent, rgba(16, 13, 28, 0.72) 18%, rgba(16, 13, 28, 0.72) 82%, transparent);
}
.sec__head {
  max-width: 800px;
  margin-bottom: 56px;
}
.sec__head--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: none;
  align-items: end;
}
.sec__head--split .lede {
  margin-top: 0;
}
.h2 {
  margin-top: 16px;
  font-size: clamp(1.9rem, 3.5vw, 3rem);
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -0.015em;
}
[data-i18n-html] em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 数据条 */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  margin-bottom: 66px;
}
.stat {
  padding: 30px 26px;
  background: var(--bg);
  transition: background-color 0.3s;
}
.stat:hover {
  background: var(--panel);
}
.num {
  display: block;
  font-family: "Bebas", "Archivo", sans-serif;
  font-size: clamp(2.6rem, 4.6vw, 3.6rem);
  line-height: 1;
  letter-spacing: 0.02em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.num small {
  font-size: 0.42em;
  -webkit-text-fill-color: var(--dim);
  color: var(--dim);
  margin-left: 3px;
}
.num--txt {
  font-size: clamp(2.2rem, 3.8vw, 3rem);
}
.stat span {
  display: block;
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--dim);
}

/* 卡片 */
.why {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.card {
  position: relative;
  padding: 26px 24px 28px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.012));
  overflow: hidden;
  isolation: isolate;
  transition: translate 0.45s var(--ease), border-color 0.35s,
    background-color 0.35s;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.35s;
}
/* 指针跟随光斑（--mx/--my 由 JS 写入） */
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0;
  background: radial-gradient(
    240px circle at var(--mx, 50%) var(--my, 50%),
    rgba(156, 123, 242, 0.16),
    transparent 68%
  );
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.card:hover {
  translate: 0 -5px;
  border-color: rgba(156, 123, 242, 0.4);
}
.card:hover::before,
.card:hover::after {
  opacity: 1;
}
.card__ico {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--grad-soft);
  border: 1px solid rgba(156, 123, 242, 0.28);
}
.card__ico svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: var(--b-2);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.card h3 {
  margin-top: 20px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.card p {
  margin-top: 9px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dim);
}

/* 肌群 */
.muscle {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}
.muscle span {
  padding: 9px 20px;
  font-size: 13.5px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  color: var(--txt);
  background: rgba(124, 92, 255, 0.07);
}
.moves {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.move {
  position: relative;
  padding: 28px 26px;
  border-radius: var(--r);
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
  isolation: isolate;
  transition: translate 0.45s var(--ease), border-color 0.35s;
}
.move::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0;
  background: radial-gradient(
    240px circle at var(--mx, 50%) var(--my, 50%),
    rgba(74, 144, 217, 0.16),
    transparent 68%
  );
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.move:hover {
  translate: 0 -4px;
  border-color: rgba(74, 144, 217, 0.45);
}
.move:hover::after {
  opacity: 1;
}
.move__tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  border-radius: 999px;
  color: var(--b-2);
  background: rgba(74, 144, 217, 0.14);
  border: 1px solid rgba(74, 144, 217, 0.25);
}
.move h3 {
  margin-top: 16px;
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.move p {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--dim);
}

/* ---------- APP ---------- */
.appgrid {
  display: grid;
  grid-template-columns: 1fr 0.92fr;
  gap: 60px;
  align-items: center;
}
.feat {
  margin-top: 34px;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--line);
}
.feat li {
  display: grid;
  gap: 3px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}
.feat b {
  font-size: 15.5px;
  font-weight: 700;
}
.feat span {
  font-size: 13.5px;
  color: var(--dim);
  line-height: 1.7;
}
.appcopy .btn {
  margin-top: 32px;
}
.phonewrap {
  display: grid;
  justify-items: center;
  gap: 18px;
}
.phone {
  position: relative;
  width: min(310px, 82%);
  aspect-ratio: 310 / 640;
  border-radius: 42px;
  padding: 10px;
  background: linear-gradient(160deg, #2a2440, #0d0a16 55%, #1b1630);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 40px 90px -34px rgba(0, 0, 0, 0.95),
    0 0 0 8px rgba(255, 255, 255, 0.02),
    0 0 80px -20px rgba(124, 92, 255, 0.55);
}
.phone__notch {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 76px;
  height: 20px;
  border-radius: 999px;
  background: #06050c;
  z-index: 2;
}
.phone__screen {
  position: relative;
  height: 100%;
  border-radius: 33px;
  padding: 26px 18px 16px;
  background: radial-gradient(circle at 50% 0%, #1c1530, #0a0813 62%);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.ps-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  font-size: 9px;
  color: rgba(255, 255, 255, 0.5);
}
.ps-bar i {
  width: 18px;
  height: 8px;
  margin-left: 5px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 2px;
  position: relative;
}
.ps-bar i::after {
  content: "";
  position: absolute;
  inset: 1.5px;
  right: 5px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 1px;
}
.ps-head {
  margin-top: 16px;
  display: grid;
  gap: 2px;
}
.ps-head small {
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--dim-2);
}
.ps-head strong {
  font-size: 17px;
  letter-spacing: 0.02em;
}
.ps-ring {
  position: relative;
  width: 132px;
  height: 132px;
  margin: 20px auto 6px;
}
.ps-ring svg {
  width: 100%;
  height: 100%;
}
.ps-arc {
  animation: arcPulse 3.6s ease-in-out infinite;
}
@keyframes arcPulse {
  0%,
  100% {
    stroke-dashoffset: 76;
    opacity: 1;
  }
  50% {
    stroke-dashoffset: 120;
    opacity: 0.82;
  }
}
.ps-ring__c {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 2px;
}
.ps-ring__c b {
  font-family: "Bebas", "Archivo", sans-serif;
  font-size: 32px;
  line-height: 1;
  letter-spacing: 0.03em;
}
.ps-ring__c span {
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--dim-2);
}
.ps-chart {
  margin-top: 10px;
  padding: 9px 10px 6px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
}
.ps-chart svg {
  width: 100%;
  height: 42px;
}
.ps-chart span {
  display: block;
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--dim-2);
}
.ps-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-top: 11px;
}
.ps-stats div {
  display: grid;
  justify-items: center;
  gap: 1px;
  padding: 8px 4px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.035);
}
.ps-stats b {
  font-family: "Bebas", "Archivo", sans-serif;
  font-size: 17px;
  letter-spacing: 0.03em;
}
.ps-stats span {
  font-size: 8.5px;
  color: var(--dim-2);
}
.ps-list {
  display: grid;
  gap: 5px;
  margin-top: 11px;
}
.ps-list div {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 9px;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 9px;
  color: rgba(255, 255, 255, 0.82);
}
.ps-list i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--v-2);
  flex: none;
  box-shadow: 0 0 8px rgba(124, 92, 255, 0.9);
}
.ps-list b {
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ps-list em {
  margin-left: auto;
  font-style: normal;
  color: var(--dim-2);
  flex: none;
}
.ps-tabs {
  margin-top: auto;
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.ps-tabs i {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  color: rgba(255, 255, 255, 0.28);
  transition: color 0.3s var(--ease), translate 0.3s var(--ease);
}
.ps-tabs i svg {
  width: 17px;
  height: 17px;
}
.ps-tabs i.on {
  color: var(--v-2);
  translate: 0 -1px;
  filter: drop-shadow(0 0 8px rgba(124, 92, 255, 0.7));
}
.phone__cap {
  font-size: 12px;
  color: var(--dim-2);
  letter-spacing: 0.04em;
}

/* ---------- AI 教练 ---------- */
.aiband {
  overflow: hidden;
}
.aiband::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 70% at 78% 50%, rgba(124, 92, 255, 0.18), transparent 70%);
  pointer-events: none;
}
.aiband__in {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 60px;
  align-items: center;
}
.steps {
  margin-top: 34px;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.steps li {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--dim);
}
.steps b {
  font-family: "Bebas", "Archivo", sans-serif;
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--v-2);
  min-width: 26px;
}
.wave {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 26px;
  padding: 30px 0;
}
.wave__rings {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 320px;
  height: 320px;
  pointer-events: none;
}
.wave__rings i {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 1px solid rgba(156, 123, 242, 0.5);
  animation: ripple 4.2s ease-out infinite;
}
.wave__rings i:nth-child(2) {
  animation-delay: 1.4s;
}
.wave__rings i:nth-child(3) {
  animation-delay: 2.8s;
}
@keyframes ripple {
  0% {
    transform: scale(0.7);
    opacity: 0.85;
  }
  100% {
    transform: scale(2.6);
    opacity: 0;
  }
}
.wave__bars {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  height: 96px;
}
.wave__bars i {
  width: 5px;
  border-radius: 999px;
  background: var(--grad);
  height: 18%;
  animation: bars 1.4s ease-in-out infinite;
}
.wave__bars i:nth-child(2n) {
  animation-delay: 0.18s;
}
.wave__bars i:nth-child(3n) {
  animation-delay: 0.36s;
}
.wave__bars i:nth-child(4n) {
  animation-delay: 0.54s;
}
.wave__bars i:nth-child(5n) {
  animation-delay: 0.72s;
}
@keyframes bars {
  0%,
  100% {
    height: 16%;
    opacity: 0.55;
  }
  50% {
    height: 92%;
    opacity: 1;
  }
}
.wave__txt {
  position: relative;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--dim);
  padding: 9px 20px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

/* ---------- 场景 ---------- */
.scenes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.scene {
  position: relative;
  min-height: 220px;
  padding: 26px 24px;
  border-radius: var(--r);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  isolation: isolate;
  transition: translate 0.45s var(--ease), border-color 0.35s;
}
.scene::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.72;
  transition: opacity 0.4s, transform 0.6s var(--ease);
}
.scene::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(7, 6, 15, 0.15), rgba(7, 6, 15, 0.88));
}
.scene:hover {
  translate: 0 -5px;
  border-color: rgba(156, 123, 242, 0.42);
}
.scene:hover::before {
  opacity: 1;
  transform: scale(1.06);
}
.scene--1::before {
  background: radial-gradient(circle at 76% 18%, #4a3a86, #120e22 62%);
}
.scene--2::before {
  background: radial-gradient(circle at 20% 24%, #2f4f86, #0d1220 64%);
}
.scene--3::before {
  background: radial-gradient(circle at 80% 80%, #8d6a3f, #171221 66%);
}
.scene--4::before {
  background: radial-gradient(circle at 30% 78%, #2c6b58, #0c1517 66%);
}
.scene--5::before {
  background: radial-gradient(circle at 72% 26%, #5a3f7e, #130f1e 64%);
}
.scene--6::before {
  background: radial-gradient(circle at 24% 30%, #3b5f8f, #0c111c 66%);
}
.scene__no {
  position: absolute;
  top: 18px;
  right: 20px;
  font-family: "Bebas", "Archivo", sans-serif;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.34);
}
.scene h3 {
  font-size: 18px;
  font-weight: 700;
}
.scene p {
  margin-top: 7px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.7;
}

/* ---------- 参数与 FAQ ---------- */
.specgrid {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 60px;
  align-items: start;
}
.spectable {
  margin-top: 34px;
  border-top: 1px solid var(--line);
}
.spectable > div {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 18px;
  padding: 15px 2px;
  border-bottom: 1px solid var(--line);
}
.spectable dt {
  font-size: 13.5px;
  color: var(--dim-2);
  letter-spacing: 0.03em;
}
.spectable dd {
  font-size: 14px;
  color: var(--txt);
}
.faq {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--panel);
}
.faq__t {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.faq details {
  border-bottom: 1px solid var(--line);
}
.faq details:last-child {
  border-bottom: 0;
}
.faq summary {
  position: relative;
  padding: 16px 30px 16px 0;
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  color: var(--txt);
  transition: color 0.25s;
}
.faq summary::-webkit-details-marker {
  display: none;
}
/* 图标用 Lucide plus（ISC 许可），展开时旋转为叉 */
.faq summary::after {
  content: "";
  position: absolute;
  right: 2px;
  top: 50%;
  width: 14px;
  height: 14px;
  translate: 0 -50%;
  background: var(--v-2);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M5 12h14M12 5v14'/%3E%3C/svg%3E")
    center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M5 12h14M12 5v14'/%3E%3C/svg%3E")
    center / contain no-repeat;
  transition: rotate 0.4s var(--ease), background-color 0.3s;
}
.faq details[open] summary::after {
  rotate: 45deg;
}
.faq summary:hover {
  color: var(--b-2);
}
.faq summary:hover::after {
  background: var(--b-2);
}
.faq details p {
  padding: 0 24px 16px 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--dim);
}
/* 展开时内容轻微下滑淡入 */
.faq details[open] p {
  animation: faqIn 0.42s var(--ease) both;
}
@keyframes faqIn {
  from {
    opacity: 0;
    translate: 0 -6px;
  }
}

/* ---------- 下载 ---------- */
.download {
  position: relative;
  overflow: hidden;
}
.download::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 54% 76% at 22% 50%, rgba(124, 92, 255, 0.2), transparent 68%);
  pointer-events: none;
}
.download__in {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
}
.download__btns {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 32px;
}
.tag {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--dim-2);
  padding: 7px 14px;
  border: 1px dashed var(--line-2);
  border-radius: 999px;
}
.dlsteps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin-top: 32px;
}
.dlsteps li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: var(--dim);
}
.dlsteps b {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  flex: none;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 600;
  color: #fff;
  background: var(--grad);
}
.fineprint {
  margin-top: 18px;
  font-size: 12px;
  color: var(--dim-2);
}
.qr {
  display: grid;
  justify-items: center;
  gap: 14px;
  padding: 20px;
  border-radius: 22px;
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.045);
  box-shadow: 0 30px 70px -40px rgba(0, 0, 0, 0.9);
}
.qr img {
  width: 200px;
  height: 200px;
  border-radius: 12px;
  background: #fff;
  object-fit: contain;
  padding: 6px;
}
.qr figcaption {
  font-size: 12.5px;
  color: var(--dim);
  letter-spacing: 0.04em;
}

/* ---------- 联系 ---------- */
.contact__in {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
}
.mail {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 15px;
  margin-top: 32px;
  padding: 15px 22px 15px 16px;
  border-radius: 16px;
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
  isolation: isolate;
  transition: translate 0.35s var(--ease), border-color 0.3s,
    background-color 0.3s, scale 0.2s var(--ease);
}
.mail::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0;
  background: radial-gradient(
    260px circle at var(--mx, 50%) var(--my, 50%),
    rgba(156, 123, 242, 0.2),
    transparent 68%
  );
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.mail:hover {
  translate: 0 -3px;
  border-color: rgba(156, 123, 242, 0.55);
  background: rgba(124, 92, 255, 0.1);
}
.mail:hover::after {
  opacity: 1;
}
.mail:active {
  scale: 0.985;
}
.mail__ico {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 12px;
  background: var(--grad-soft);
  border: 1px solid rgba(156, 123, 242, 0.3);
}
.mail__ico svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: var(--b-2);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.mail em {
  display: block;
  font-style: normal;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--dim-2);
}
.mail b {
  font-size: 15.5px;
  letter-spacing: 0.01em;
}
.contact__hint {
  margin-top: 18px;
  font-size: 13px;
  color: var(--dim-2);
}
.wechat {
  display: grid;
  justify-items: center;
  gap: 14px;
}
.wechat__frame {
  position: relative;
  width: 220px;
  height: 220px;
  border-radius: 20px;
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.045);
  overflow: hidden;
  display: grid;
  place-items: center;
}
.wechat__frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fff;
  padding: 8px;
  display: none;
}
.wechat__frame.has-qr img {
  display: block;
}
.wechat__frame.has-qr .wechat__empty {
  display: none;
}
.wechat__empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 6px;
  padding: 20px;
  text-align: center;
  background: repeating-linear-gradient(
      -45deg,
      rgba(255, 255, 255, 0.022) 0 10px,
      transparent 10px 20px
    );
}
.wechat__empty svg {
  width: 34px;
  height: 34px;
  fill: none;
  stroke: rgba(156, 123, 242, 0.65);
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.wechat__empty b {
  font-size: 13px;
  color: var(--dim);
  letter-spacing: 0.08em;
}
.wechat__empty span {
  font-size: 11.5px;
  color: var(--dim-2);
}
.wechat__cap {
  font-size: 12.5px;
  color: var(--dim-2);
  letter-spacing: 0.04em;
}

/* ---------- 页脚 ---------- */
.ftr {
  padding: 46px 0;
  border-top: 1px solid var(--line);
  background: var(--bg-2);
}
.ftr__in {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 32px;
  align-items: center;
}
.ftr__brand {
  display: flex;
  align-items: center;
  gap: 13px;
}
.ftr__brand p {
  display: grid;
  line-height: 1.4;
}
.ftr__brand strong {
  font-size: 13.5px;
  letter-spacing: 0.16em;
}
.ftr__brand span {
  font-size: 12px;
  color: var(--dim-2);
}
.ftr__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}
.ftr__nav a {
  font-size: 13px;
  color: var(--dim);
  transition: color 0.25s, translate 0.25s var(--ease);
}
.ftr__nav a:hover {
  color: #fff;
  translate: 0 -1px;
}
.ftr__legal {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  font-size: 11.5px;
  color: var(--dim-2);
  text-align: right;
}

/* ---------- 滚动揭示（可逆 + 方向感知 + 形变） ---------- */
/* 下方进入：上浮 + 轻微缩放 + 去模糊；向上离开：反方向淡出 */
.reveal {
  --ry: 28px;
  --sc: 1;
  --blur: 0px;
  opacity: 0;
  transform: translate3d(0, var(--ry), 0) scale(var(--sc));
  filter: blur(var(--blur));
  transition: opacity 0.75s var(--ease) var(--d, 0ms),
    transform 0.75s var(--ease) var(--d, 0ms),
    filter 0.75s var(--ease) var(--d, 0ms);
  will-change: opacity, transform;
}
.reveal.in {
  opacity: 1;
  transform: none;
  filter: blur(0);
}
.reveal.out {
  opacity: 0;
  transform: translate3d(0, calc(var(--ry) * -0.8), 0) scale(calc(var(--sc) * 0.98));
  filter: blur(calc(var(--blur) + 2px));
  transition-duration: 0.45s;
}
/* 标题形变更明显 */
h1.reveal,
.h2.reveal {
  --ry: 34px;
  --blur: 6px;
}
.lede.reveal {
  --blur: 3px;
}
.card.reveal,
.move.reveal,
.scene.reveal,
.faq.reveal {
  --sc: 0.965;
}
.stat.reveal {
  --sc: 0.93;
}
.hero__art.reveal {
  --ry: 40px;
  --sc: 0.95;
}

/* 分组错峰：容器进视口后子项依次进入（--i 由 JS 写入） */
.stagger > * {
  opacity: 0;
  transform: translate3d(0, 16px, 0);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  transition-delay: calc(var(--i, 0) * 55ms);
  will-change: opacity, transform;
}
.stagger.in > * {
  opacity: 1;
  transform: none;
}
.stagger.out > * {
  opacity: 0;
  transform: translate3d(0, -10px, 0);
  transition-duration: 0.35s;
  transition-delay: calc(var(--i, 0) * 20ms);
}

/* 滚动进度条 */
.progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: 100%;
  height: 2px;
  transform-origin: 0 50%;
  scale: var(--p, 0) 1;
  background: var(--grad);
  pointer-events: none;
}

/* 滚动驱动：首屏背景随滚动轻微下行淡出 */
@supports (animation-timeline: scroll()) {
  .hero__bg {
    animation: heroFade linear both;
    animation-timeline: scroll(root);
    animation-range: 0 70vh;
  }
  @keyframes heroFade {
    to {
      opacity: 0.15;
      translate: 0 90px;
    }
  }
}

/* ---------- View Transition：语言切换的平滑形变 ---------- */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.5s;
  animation-timing-function: var(--ease);
}
::view-transition-old(root) {
  animation-name: vtOut;
}
::view-transition-new(root) {
  animation-name: vtIn;
}
@keyframes vtOut {
  to {
    opacity: 0;
    transform: scale(0.985);
    filter: blur(4px);
  }
}
@keyframes vtIn {
  from {
    opacity: 0;
    transform: scale(1.012);
    filter: blur(4px);
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal,
  .stagger > * {
    opacity: 1;
    transform: none;
    filter: none;
    transition: none;
  }
  .hdr__in {
    animation: none;
  }
  .orb,
  .device,
  .ring,
  .led,
  .ticker__track,
  .ps-arc,
  .wave__rings i,
  .wave__bars i {
    animation: none !important;
  }
  .hero__bg {
    animation: none;
  }
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation: none;
  }
  /* 保留最基础的按压/悬浮反馈，不做位移 */
  .btn:hover,
  .card:hover,
  .move:hover,
  .scene:hover,
  .mail:hover {
    translate: none;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: 10px;
    padding-top: 10px;
  }
  .hero {
    min-height: 0;
    padding-top: calc(var(--hdr-h) + 46px);
  }
  .hero__art {
    max-width: 560px;
    margin: 0 auto;
    width: 100%;
  }
  .device {
    max-height: none;
  }
  .why {
    grid-template-columns: repeat(2, 1fr);
  }
  .appgrid,
  .aiband__in,
  .specgrid {
    grid-template-columns: 1fr;
    gap: 44px;
  }
  .sec__head--split {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .ftr__in {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .ftr__legal {
    align-items: flex-start;
    text-align: left;
  }
}

@media (max-width: 880px) {
  .nav {
    position: fixed;
    top: var(--hdr-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 10px 20px 22px;
    background: rgba(9, 7, 18, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, transform 0.3s var(--ease), visibility 0.3s;
  }
  .nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .nav a {
    padding: 14px 4px;
    font-size: 15px;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }
  .nav a:last-child {
    border-bottom: 0;
  }
  /* 抽屉内不需要指示块 */
  .nav__pill {
    display: none;
  }
  .burger {
    display: block;
  }
  .moves,
  .scenes {
    grid-template-columns: repeat(2, 1fr);
  }
  .download__in,
  .contact__in {
    grid-template-columns: 1fr;
    gap: 40px;
    justify-items: start;
  }
  .qr,
  .wechat {
    justify-self: center;
  }
}

@media (max-width: 640px) {
  :root {
    --hdr-h: 66px;
  }
  .wrap,
  .hdr__in {
    padding: 0 18px;
  }
  .hdr__act .btn--sm {
    display: none;
  }
  .brand__txt em {
    display: none;
  }
  .sec {
    padding: 76px 0;
  }
  .hero {
    padding-top: calc(var(--hdr-h) + 34px);
  }
  h1 {
    font-size: clamp(2.15rem, 9.4vw, 2.9rem);
  }
  .lede {
    font-size: 15px;
  }
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat {
    padding: 22px 18px;
  }
  .why,
  .moves,
  .scenes {
    grid-template-columns: 1fr;
  }
  .scene {
    min-height: 176px;
  }
  .floatcard--a {
    left: -6px;
    width: 148px;
    padding: 11px 13px;
  }
  .floatcard--b {
    right: -6px;
    min-width: 172px;
  }
  .floatcard__v {
    font-size: 26px;
  }
  .spectable > div {
    grid-template-columns: 104px 1fr;
    gap: 12px;
  }
  .faq {
    padding: 22px 20px;
  }
  .qr img {
    width: 168px;
    height: 168px;
  }
  .wechat__frame {
    width: 190px;
    height: 190px;
  }
  .ftr__nav {
    gap: 8px 18px;
  }
  .dlsteps {
    gap: 10px 20px;
  }
}