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

html,
body {
  margin: 0;
  min-height: 100%;
}

html {
  scrollbar-gutter: stable;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-width: 0;
  overflow-x: clip;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Inter, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

@supports not (overflow: clip) {
  html,
  body {
    overflow-x: hidden;
  }
}

:root {
  --font-en: Inter, system-ui, -apple-system, "SF Pro Text", sans-serif;
  --font-inter: Inter, system-ui, -apple-system, sans-serif;
  --layout-inline: 100vw;
}

@supports (width: 1dvi) {
  :root {
    --layout-inline: 100dvi;
  }
}

@media (max-width: 768px) {
  html {
    scrollbar-gutter: auto;
  }
}

#intro {
  position: relative;
  background-color: lightgray;
}

/* Section-level horizontal containment */
#intro,
.banner-root,
.video-intro,
.features,
.site-about,
.site-footer {
  max-width: 100%;
  overflow-x: hidden;
}

#intro .intro-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: fill;
  pointer-events: none;
}

#intro > .banner-root {
  position: relative;
  z-index: 1;
}

#intro .banner-bg__glow {
  background: none;
}

.banner-root {
  --canvas-w: 1920;
  --canvas-h: 1080;
  --accent: #0091ff;
  --text: #000000;
  --text-muted: #666666;
  --text-soft: #999999;
  background: transparent;
}

.banner-viewport {
  width: 100%;
  height: min(calc(var(--canvas-h) * 1px), calc(var(--layout-inline) * var(--canvas-h) / var(--canvas-w)));
  position: relative;
  overflow: hidden;
}

.banner-canvas {
  position: relative;
  top: 0;
  width: 100%;
  max-width: 100%;
  height: calc(var(--canvas-h) * 1px);
  transform: scale(min(0.82, calc(var(--layout-inline) / var(--canvas-w))));
  transform-origin: top center;
}

.banner-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.banner-bg__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(
      120% 90% at 88% 12%,
      rgba(255, 220, 200, 0.55) 0%,
      rgba(255, 245, 240, 0.35) 35%,
      rgba(243, 243, 245, 0) 70%
    ),
    linear-gradient(165deg, #f8f8fa 0%, #ececef 100%);
}

.banner-bg__dots {
  position: absolute;
  inset: 0;
  opacity: 0.45;
  background-image: radial-gradient(rgba(0, 0, 0, 0.12) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 13px 11px;
}

.banner-nav {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(24px, 5vw, 80px);
  z-index: 2;
}

.banner-nav__bg {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.banner-nav__left,
.banner-nav__right {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
}

.banner-nav__left {
  gap: 20px;
}

.banner-nav__logo {
  border-radius: 8px;
  display: block;
}

.banner-nav__brand {
  font-family: var(--font-inter);
  font-size: 24px;
  font-weight: 200;
  letter-spacing: 0.05em;
  color: var(--text);
}

.banner-nav__right {
  gap: clamp(20px, 3vw, 48px);
}

.banner-nav__link {
  font-size: 16px;
  line-height: 1.2;
  text-decoration: none;
  color: var(--text);
  cursor: default;
}

.banner-nav__link--active {
  font-weight: 600;
}

.banner-nav__link--muted {
  font-weight: 400;
  color: var(--text-muted);
  cursor: pointer;
}

.banner-nav__link--muted:hover {
  color: #333;
}

.banner-nav__download-wrap {
  position: relative;
  z-index: 3;
}

.banner-nav__download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 32px;
  border: none;
  border-radius: 20px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}

.banner-nav__download-text {
  font-weight: 600;
}

.banner-nav__download:hover {
  filter: brightness(1.05);
}

.banner-nav__download-gap {
  display: inline-block;
  width: 6px;
}

.banner-nav__chevron {
  margin-top: 1px;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.banner-nav__download-panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: max-content;
  min-width: 0;
  max-width: min(320px, calc(var(--layout-inline) - 48px));
  padding: 8px 0;
  margin: 0;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
  pointer-events: none;
  z-index: 30;
}

.banner-nav__download-panel::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 100%;
  height: 14px;
}

.banner-nav__download-wrap:hover .banner-nav__download-panel,
.banner-nav__download-wrap:focus-within .banner-nav__download-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.banner-nav__download-wrap:hover .banner-nav__chevron,
.banner-nav__download-wrap:focus-within .banner-nav__chevron {
  transform: rotate(180deg);
}

.banner-nav__download-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  text-decoration: none;
  color: #000;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
}

.banner-nav__download-item:hover {
  background: rgba(0, 0, 0, 0.05);
}

.banner-nav__download-item-icon {
  display: block;
  flex-shrink: 0;
}

.banner-main {
  position: absolute;
  left: 0;
  top: 88px;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  pointer-events: none;
}

.banner-main > * {
  pointer-events: auto;
}

.banner-copy {
  padding: 168px 0 0 96px;
  max-width: 820px;
}

.banner-headline {
  margin: 0 0 26px;
  max-width: 620px;
  font-size: 40px;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--text);
}

.banner-subhead {
  margin: 0 0 28px;
  max-width: 640px;
  font-size: 17px;
  line-height: 1.45;
  font-weight: 400;
  color: var(--text);
}

.banner-stores {
  display: flex;
  flex-direction: column;
  gap: 22px;
  align-items: flex-start;
}

.banner-store {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 60px;
  padding: 12px 40px;
  border-radius: 50px;
  background: #000;
  color: #fff;
  text-decoration: none;
}

.banner-store:hover {
  opacity: 0.92;
}

.banner-store__inner {
  display: flex;
  align-items: center;
  gap: 10px;
}

.banner-store__icon {
  flex-shrink: 0;
  display: block;
}

.banner-store__label {
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
}

.banner-store--ios {
  min-width: 252px;
}

.banner-store--android {
  min-width: 248px;
}

.banner-store--play {
  min-width: 260px;
}

.banner-store--apk {
  min-width: 250px;
}

.banner-root--en .banner-nav__link {
  font-size: 17px;
}

.banner-root--en .banner-nav__download {
  font-size: 16px;
}

.banner-root--en .banner-copy {
  padding-top: 66px;
}

.banner-root--en .banner-headline {
  font-family: var(--font-inter);
  font-size: 64px;
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: 0;
  max-width: 800px;
}

.banner-root--en .banner-subhead {
  font-family: var(--font-inter);
  max-width: 520px;
  font-size: 16px;
}

.banner-device-wrap {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 132px 80px 0 0;
}

.banner-ipad {
  position: relative;
  width: 655px;
  height: calc(7px + 648px * 1130 / 1630);
  flex-shrink: 0;
}

.banner-ipad__screen {
  position: absolute;
  left: 7px;
  top: 7px;
  width: 648px;
  height: calc(648px * 1130 / 1630);
  overflow: hidden;
}

.banner-ipad__screen-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: fill;
}

@media (max-width: 1100px) {
  .banner-viewport {
    height: auto;
    min-height: 0;
    max-height: none;
    overflow-x: hidden;
    overflow-y: visible;
  }

  .banner-canvas {
    height: auto;
  }

  .banner-nav {
    position: relative;
  }

  .banner-main {
    position: relative;
    top: auto;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    bottom: auto;
    height: auto;
    overflow: visible;
    padding-bottom: clamp(16px, 4vw, 32px);
  }

  .banner-root .banner-copy {
    padding: 66px 24px 0;
    max-width: none;
    width: 100%;
    min-width: 0;
  }

  .banner-headline {
    font-size: clamp(26px, 6.5vw, 40px);
    max-width: none;
    letter-spacing: 0;
  }

  .banner-root--en .banner-headline {
    font-size: clamp(28px, 7vw, 44px);
  }

  .banner-subhead {
    font-size: 16px;
  }

  .banner-headline,
  .banner-subhead {
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .banner-device-wrap {
    order: -1;
    justify-content: center;
    padding: 24px 16px 0;
    width: 100%;
    max-width: 100%;
  }

  .banner-ipad {
    transform: none;
    width: min(655px, 100%);
    max-width: 100%;
    height: auto;
    aspect-ratio: 655 / 456.227;
    margin-left: auto;
    margin-right: auto;
  }

  .banner-ipad__screen {
    left: calc(100% * 7 / 655);
    top: calc(100% * 7px / (7px + 648px * 1130 / 1630));
    width: calc(100% * 648 / 655);
    height: calc(100% * (648px * 1130 / 1630) / (7px + 648px * 1130 / 1630));
  }

  .banner-nav {
    max-width: 100%;
    padding: 0 24px;
    flex-wrap: wrap;
    height: auto;
    min-height: 88px;
    gap: 16px;
  }

  .banner-nav__right {
    min-width: 0;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: flex-end;
  }

  .banner-nav__right .banner-nav__link {
    min-width: 0;
  }

  .scenario-showcase__steps {
    margin-right: 0;
  }
}

@media (max-width: 768px) {
  .banner-nav__download-wrap {
    display: none;
  }

  .banner-nav {
    min-height: 72px;
    padding: 0 14px;
  }

  .banner-nav__left {
    gap: 10px;
  }

  .banner-nav__logo {
    height: 28px;
  }

  .banner-nav__brand {
    font-size: clamp(17px, 4.2vw, 19px);
    letter-spacing: 0.03em;
  }

  .banner-nav__link {
    font-size: clamp(14px, 3.6vw, 15px);
  }

  .banner-root--en .banner-nav__link {
    font-size: clamp(15px, 3.8vw, 16px);
  }

  .banner-nav__right {
    gap: 12px;
  }

  .banner-nav__download {
    height: 36px;
    padding: 0 20px;
    font-size: 13px;
    border-radius: 18px;
  }

  .banner-stores {
    width: 100%;
    max-width: 100%;
    gap: clamp(14px, 4vw, 20px);
  }

  .banner-store {
    height: clamp(48px, 11vw, 54px);
    padding: clamp(8px, 2vw, 10px) clamp(18px, 5vw, 28px);
    border-radius: 999px;
  }

  .banner-store__inner {
    gap: clamp(6px, 1.8vw, 8px);
  }

  .banner-store__icon {
    width: clamp(26px, 6.5vw, 30px);
    height: clamp(26px, 6.5vw, 30px);
  }

  .banner-store__label {
    font-size: clamp(15px, 3.8vw, 17px);
  }

  .banner-store--ios,
  .banner-store--android,
  .banner-store--play,
  .banner-store--apk {
    min-width: 0;
    width: 100%;
    max-width: 100%;
  }

  .banner-main {
    padding-bottom: clamp(28px, 7vw, 48px);
  }
}

.video-intro {
  background: #f7f7fa;
  position: relative;
}

.video-intro__inner {
  width: 100%;
  max-width: 1440px;
  min-width: 0;
  margin: 0 auto;
  min-height: min(720px, calc(var(--layout-inline) * 720 / 1920));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: clamp(32px, 5vh, 72px) clamp(20px, 5vw, 72px) clamp(40px, 6vh, 88px);
}

.video-intro__title {
  margin: 0 0 clamp(24px, 4vh, 56px);
  max-width: 100%;
  font-size: clamp(24px, 3.4vw, 44px);
  font-weight: 600;
  line-height: 1.15;
  text-align: center;
  color: #000;
}

.video-intro__stage {
  /* Keep box strictly 16:9: max-height alone widens the box (100% width + short height) and causes side pillarboxing with object-fit: contain. */
  --video-stage-max-h: min(480px, 72vh);
  width: min(100%, 880px, calc(var(--video-stage-max-h) * 16 / 9));
  aspect-ratio: 16 / 9;
  height: auto;
  /* Match section bg so any subpixel gap at the rounded clip is invisible; do not set border-radius on <video> (cover + radius causes a fake “stroke” in many engines). */
  background: #f7f7fa;
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.video-intro__video {
  display: block;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  object-fit: cover;
  border: 0;
  outline: none;
}

.video-intro__video:focus-visible {
  outline: 2px solid var(--accent, #1677ff);
  outline-offset: 3px;
}

.video-intro__fallback {
  margin: 0;
  padding: 16px 20px;
  font-size: 15px;
  line-height: 1.5;
  color: #333;
  text-align: center;
}

.video-intro__fallback a {
  color: var(--accent, #1677ff);
}

.video-intro--en .video-intro__title {
  font-family: var(--font-inter);
  font-weight: 700;
}

.video-intro--en .video-intro__fallback {
  font-family: var(--font-inter);
}

@media (max-width: 640px) {
  .video-intro__inner {
    min-height: auto;
  }

  .video-intro__stage {
    width: 100%;
    max-width: 100%;
    /* auto 高度 + contain 会让视频层与圆角容器不同步，iOS/WebKit 上圆角常「切不圆」；固定 16:9 + overflow 裁切更稳 */
    aspect-ratio: 16 / 9;
    min-height: 0;
    max-height: none;
    border-radius: clamp(12px, 3.8vw, 20px);
    overflow: hidden;
    isolation: isolate;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
  }

  .video-intro__video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
  }
}

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

.features {
  --feature-tag: #84d0ba;
  background: #fff;
}

.features__inner {
  width: 100%;
  max-width: min(1380px, 100%);
  min-width: 0;
  margin: 0 auto;
  padding: 48px clamp(10px, 1.6vw, 28px) 72px;
}

.features--en .feature-title,
.features--en .feature-desc,
.features--en .feature-tag {
  font-family: var(--font-en);
}

.features--en .feature-tags--split-en {
  gap: 16px clamp(24px, 4vw, 48px);
}

.feature-row {
  display: grid;
  grid-template-columns: minmax(220px, min(400px, 100%)) minmax(260px, 1.55fr);
  gap: clamp(18px, 2.4vw, 36px);
  align-items: center;
  padding: clamp(32px, 4vw, 64px) 0;
}

.feature-row--flip {
  grid-template-columns: minmax(260px, 1.55fr) minmax(220px, min(400px, 100%));
}

.feature-row--flip .feature-text {
  order: 2;
}

.feature-row--flip .feature-visual {
  order: 1;
}

.feature-title {
  margin: 0 0 14px;
  font-size: clamp(26px, 4.2vw, 52px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #000;
}

.feature-desc {
  margin: 0 0 22px;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 400;
  color: #000;
}

.feature-desc--30 {
  font-size: 20px;
}

.feature-desc--36 {
  font-size: 22px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  align-items: center;
}

.feature-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--feature-tag);
}

.feature-tag__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--feature-tag);
  flex-shrink: 0;
  overflow: hidden;
}

.feature-tag__icon img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

@keyframes features-reveal-left {
  from {
    opacity: 0;
    transform: translate3d(-52px, 0, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes features-reveal-right {
  from {
    opacity: 0;
    transform: translate3d(52px, 0, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

.feature-row.feature-row--reveal-prep:not(.feature-row--flip) .feature-text {
  opacity: 0;
  transform: translate3d(-52px, 0, 0);
}

.feature-row.feature-row--reveal-prep:not(.feature-row--flip) .feature-visual {
  opacity: 0;
  transform: translate3d(52px, 0, 0);
}

.feature-row.feature-row--reveal-prep.feature-row--flip .feature-text {
  opacity: 0;
  transform: translate3d(52px, 0, 0);
}

.feature-row.feature-row--reveal-prep.feature-row--flip .feature-visual {
  opacity: 0;
  transform: translate3d(-52px, 0, 0);
}

@media (prefers-reduced-motion: no-preference) {
  .feature-row.feature-row--in-view:not(.feature-row--flip) .feature-text {
    animation: features-reveal-left 0.78s cubic-bezier(0.22, 1, 0.36, 1) 0.06s both;
  }

  .feature-row.feature-row--in-view:not(.feature-row--flip) .feature-visual {
    animation: features-reveal-right 0.78s cubic-bezier(0.22, 1, 0.36, 1) 0.18s both;
  }

  .feature-row.feature-row--in-view.feature-row--flip .feature-text {
    animation: features-reveal-right 0.78s cubic-bezier(0.22, 1, 0.36, 1) 0.06s both;
  }

  .feature-row.feature-row--in-view.feature-row--flip .feature-visual {
    animation: features-reveal-left 0.78s cubic-bezier(0.22, 1, 0.36, 1) 0.18s both;
  }
}

@media (prefers-reduced-motion: reduce) {
  .features .feature-text,
  .features .feature-visual {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .feature-row--reveal-prep .feature-text,
  .feature-row--reveal-prep .feature-visual {
    opacity: 1 !important;
    transform: none !important;
  }
}

.feature-visual {
  margin: 0;
  justify-self: stretch;
  width: 100%;
  max-width: min(1180px, 100%);
  margin-left: auto;
  margin-right: 0;
  aspect-ratio: 1010 / 726;
  border-radius: 12px;
  overflow: hidden;
}

.feature-row--flip .feature-visual {
  margin-left: 0;
  margin-right: auto;
}

.feature-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: fill;
  border-radius: inherit;
}

@media (max-width: 960px) {
  /* 手机/窄屏：每条「一图 + 一文案」纵向排版，配图在上、标题与说明在下 */
  .feature-row,
  .feature-row--flip {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: clamp(20px, 4vw, 28px);
    padding: clamp(24px, 5vw, 44px) 0;
  }

  .feature-row--flip .feature-visual,
  .feature-row .feature-visual {
    order: -1;
    width: 100%;
    max-width: none;
    margin-left: 0;
    margin-right: 0;
    align-self: stretch;
    aspect-ratio: auto;
  }

  .feature-row--flip .feature-text,
  .feature-row .feature-text {
    order: 0;
    width: 100%;
    min-width: 0;
  }

  .feature-visual img {
    width: 100%;
    height: auto;
    object-fit: contain;
  }

  .feature-desc,
  .feature-desc--30,
  .feature-desc--36 {
    font-size: clamp(15px, 3.8vw, 18px);
  }

  .feature-tags {
    gap: 16px 28px;
  }
}

.scenario-showcase {
  position: relative;
  background: #e8e8ea;
  --scenario-viewport-h: 100dvh;
  --scenario-scroll-slides: 4;
  --scenario-card-h: min(52vh, 440px);
}

@supports not (height: 100dvh) {
  .scenario-showcase {
    --scenario-viewport-h: 100vh;
  }
}

.scenario-showcase--en .scenario-showcase__title,
.scenario-showcase--en .scenario-showcase__desc {
  font-family: var(--font-en);
}

.scenario-showcase__pin {
  min-height: calc(var(--scenario-scroll-slides) * var(--scenario-viewport-h));
  width: 100%;
  margin: 0;
}

.scenario-showcase__sticky-shell {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  height: var(--scenario-viewport-h);
  min-height: 100vh;
  width: 100%;
  max-width: none;
  margin: 0;
  overflow: hidden;
}

.scenario-showcase__steps {
  position: relative;
  z-index: 1;
  isolation: isolate;
  align-self: stretch;
  width: min(46%, 480px);
  max-width: 520px;
  margin: 0 0 0 clamp(20px, 8vw, 100px);
  padding-left: 0;
  padding-right: clamp(8px, 2vw, 16px);
  margin-right: clamp(-36px, -2.5vw, -12px);
  pointer-events: none;
}

.scenario-showcase__steps .scenario-showcase__card {
  pointer-events: auto;
}

.scenario-showcase__step {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.scenario-showcase__step.is-active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
  pointer-events: auto;
}

.scenario-showcase__card {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: clamp(12px, 1.8vw, 22px);
  width: 100%;
  min-height: var(--scenario-card-h);
  padding: clamp(20px, 3vh, 36px) clamp(16px, 2vw, 32px) clamp(20px, 3vh, 36px) clamp(14px, 1.8vw, 24px);
  border-radius: 18px;
  -webkit-backdrop-filter: blur(22px);
  backdrop-filter: blur(22px);
  box-shadow: 0 14px 48px rgba(0, 0, 0, 0.07);
  transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

.scenario-showcase__step--study .scenario-showcase__card {
  background: rgba(255, 225, 217, 0.65);
}

.scenario-showcase__step--work .scenario-showcase__card {
  background: rgba(217, 225, 255, 0.65);
}

.scenario-showcase__step--create .scenario-showcase__card {
  background: rgba(248, 217, 255, 0.65);
}

.scenario-showcase__step--life .scenario-showcase__card {
  background: rgba(239, 255, 217, 0.65);
}

.scenario-showcase__timeline {
  display: flex;
  flex-direction: column;
  width: 3px;
  flex-shrink: 0;
  align-self: stretch;
  min-height: 0;
  border-radius: 2px;
  overflow: hidden;
}

.scenario-showcase__timeline-mark {
  flex: 1 1 0;
  min-height: 32px;
  background: rgba(0, 0, 0, 0.14);
}

.scenario-showcase__timeline-mark--active {
  background: #000;
}

.scenario-showcase__copy {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.scenario-showcase__title {
  margin: 0 0 10px;
  font-size: clamp(24px, 4.2vw, 44px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #000;
}

.scenario-showcase__desc {
  margin: 0;
  font-size: clamp(14px, 1.65vw, 18px);
  line-height: 1.5;
  font-weight: 400;
  color: #000;
}

.scenario-showcase__sticky {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.scenario-showcase__sticky-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: var(--scenario-viewport-h);
  overflow: hidden;
}

.scenario-showcase__layers {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.scenario-showcase__layer {
  position: absolute;
  inset: 0;
  background-color: #d0d0d4;
  background-position: center;
  background-size: 100% 100%;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 0.42s ease;
  pointer-events: none;
}

.scenario-showcase__layer.is-active {
  opacity: 1;
  z-index: 1;
}

@media (prefers-reduced-motion: reduce) {
  .scenario-showcase__layer {
    transition: none;
  }
}

.scenario-showcase__layer--study {
  background-image: url("../assets/scenario-study-bg.jpg");
}

.scenario-showcase--en .scenario-showcase__layer--study {
  background-image: url("../assets/scenario-study-bg-en.jpg");
}

.scenario-showcase__layer--work {
  background-image: url("../assets/scenario-work-bg.jpg");
}

.scenario-showcase--en .scenario-showcase__layer--work {
  background-image: url("../assets/scenario-work-bg-en.jpg");
}

.scenario-showcase__layer--create {
  background-image: url("../assets/scenario-create-bg.jpg");
}

.scenario-showcase__layer--life {
  background-image: url("../assets/scenario-life-bg.jpg");
}

.scenario-showcase--en .scenario-showcase__layer--life {
  background-image: url("../assets/scenario-life-bg-en.jpg");
}

.site-about {
  scroll-margin-top: 24px;
  background: #fff;
  color: #000;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.site-about .about-page__main {
  min-height: 0;
  padding-top: clamp(56px, 10vh, 100px);
}

.site-about--en .about-page__eyebrow,
.site-about--en .about-page__headline,
.site-about--en .about-page__lede {
  font-family: var(--font-en);
}

.site-about--en .about-page__eyebrow {
  font-weight: 600;
}

.site-about--en .about-page__headline {
  max-width: 24em;
  font-size: clamp(22px, 3.6vw, 40px);
}

.site-about--en .about-page__lede {
  max-width: min(720px, 100%);
}

.site-footer {
  background: #333;
  color: rgba(255, 255, 255, 0.5);
}

.site-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  min-height: 400px;
  padding: 56px clamp(20px, 4vw, 64px) 28px;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.site-footer__main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: clamp(20px, 3vw, 48px);
  flex: 1;
  min-width: 0;
}

.site-footer__cols {
  display: flex;
  flex: 1 1 auto;
  gap: clamp(20px, 3.5vw, 72px);
  align-items: flex-start;
  min-width: 0;
}

.site-footer:not(.site-footer--en) .site-footer__cols > .site-footer__col--wide {
  flex: 1 1 auto;
  min-width: 0;
  width: auto;
  max-width: none;
}

.site-footer:not(.site-footer--en) .site-footer__cols .site-footer__contact,
.site-footer:not(.site-footer--en) .site-footer__cols .site-footer__address {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.site-footer__col {
  flex: 0 0 auto;
  width: min(112px, 100%);
}

.site-footer__col--support {
  flex: 0 0 auto;
  width: min(140px, 100%);
}

.site-footer__col--wide {
  width: min(544px, 100%);
  max-width: 100%;
}

.site-footer__heading {
  margin: 0 0 20px;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.2;
  color: rgba(255, 255, 255, 0.5);
}

.site-footer__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.site-footer__list a {
  color: inherit;
  text-decoration: none;
  font-size: 15px;
}

.site-footer__list a:hover {
  opacity: 0.85;
}

.site-footer__contact,
.site-footer__address {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.45;
}

.site-footer__address {
  margin-bottom: 0;
}

.site-footer__contact-label {
  margin-right: 4px;
}

.site-footer__contact-value {
  font-family: var(--font-inter);
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 96px;
  flex-shrink: 0;
}

.site-footer__logo {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 22%;
}

.site-footer__name {
  font-family: var(--font-inter);
  font-size: 22px;
  font-weight: 200;
  letter-spacing: 0.06em;
  color: #fff;
  text-align: center;
}

.site-footer__legal {
  margin: 36px 0 0;
  max-width: 100%;
  text-align: center;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.3);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.site-footer--en .site-footer__heading,
.site-footer--en .site-footer__list a,
.site-footer--en .site-footer__contact,
.site-footer--en .site-footer__address,
.site-footer--en .site-footer__legal {
  font-family: var(--font-en);
}

.site-footer--en .site-footer__cols--en {
  gap: clamp(16px, 2.5vw, 56px);
  flex: 1 1 auto;
  min-width: 0;
}

.site-footer--en .site-footer__col--en {
  width: auto;
  min-width: 0;
  flex: 0 1 auto;
}

.site-footer--en .site-footer__col:nth-child(2) {
  width: auto;
  min-width: min(220px, 100%);
}

.site-footer--en .site-footer__col--en-contact {
  max-width: min(360px, 100%);
}

.site-footer__en-contact-block {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.site-footer--en .site-footer__en-contact-block .site-footer__contact,
.site-footer--en .site-footer__en-contact-block .site-footer__address {
  margin: 0;
}

@media (max-width: 1100px) {
  .site-footer:not(.site-footer--en) .site-footer__main {
    flex-direction: column;
    align-items: center;
  }

  .site-footer:not(.site-footer--en) .site-footer__cols {
    flex: none;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
  }

  .site-footer:not(.site-footer--en) .site-footer__col,
  .site-footer:not(.site-footer--en) .site-footer__col--support,
  .site-footer:not(.site-footer--en) .site-footer__col--wide {
    width: 100%;
    max-width: 420px;
    text-align: center;
  }

  .site-footer:not(.site-footer--en) .site-footer__list {
    align-items: center;
  }
}

@media (max-width: 900px) {
  .scenario-showcase {
    --scenario-card-h: min(42vh, 340px);
  }

  /* 100% 100% 在窄高视口里会压扁背景图；cover 保持宽高比，只裁切不拉伸 */
  .scenario-showcase__layer {
    background-size: cover;
  }

  .scenario-showcase__sticky-shell {
    padding-inline: clamp(10px, 3vw, 20px);
  }

  .scenario-showcase__steps {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
    padding-right: clamp(4px, 2vw, 12px);
  }

  .site-footer__main {
    flex-direction: column;
    align-items: center;
  }

  .site-footer__cols {
    flex: none;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
  }

  .site-footer--en .site-footer__cols--en {
    flex: none;
    flex-direction: column;
    flex-wrap: wrap;
    align-items: center;
  }

  .site-footer__col,
  .site-footer__col--support,
  .site-footer__col--wide {
    width: 100%;
    max-width: 420px;
    text-align: center;
  }

  .site-footer--en .site-footer__col--en,
  .site-footer--en .site-footer__col:nth-child(2),
  .site-footer--en .site-footer__col--en-contact {
    width: 100%;
    max-width: 420px;
    text-align: center;
  }

  .site-footer__list {
    align-items: center;
  }

  .site-footer__brand {
    margin-top: 8px;
  }
}

@media (max-width: 768px) {
  .site-footer__brand {
    display: none;
  }
}

.about-page__main {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 960px;
  min-width: 0;
  margin: 0 auto;
  padding-inline: clamp(16px, 4vw, 28px);
}

.about-page__eyebrow {
  margin: 0 0 clamp(12px, 1.8vh, 20px);
  font-size: clamp(18px, 2.2vw, 28px);
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  color: #0091ff;
}

.about-page__headline {
  margin: 0 0 clamp(14px, 2vh, 26px);
  max-width: 22em;
  font-size: clamp(22px, 4.2vw, 44px);
  font-weight: 600;
  line-height: 1.15;
  text-align: center;
  letter-spacing: -0.02em;
}

.about-page__lede {
  margin: 0;
  max-width: min(720px, 100%);
  font-size: clamp(15px, 1.75vw, 17px);
  line-height: 1.55;
  font-weight: 400;
  text-align: center;
  color: #666;
}

.about-page__art {
  width: 100%;
  max-width: none;
  margin-top: clamp(22px, 3.5vh, 44px);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
}

.about-page__art img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  object-position: center bottom;
  max-width: none;
}