* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  overflow-x: hidden;
}

body {
  background: #08090b;
  color: #fff;
  font-family: "Microsoft YaHei", Arial;
}

.header {
  height: 70px;
  display: flex;
  align-items: center;
  padding: 0 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 7px;
}

.brand-icon {
  width: 35px;
  height: 35px;
  object-fit: contain;
}

.brand-title {
  width: 88px;
  height: auto;
  object-fit: contain;
}

nav {
  display: flex;
  gap: 35px;
  margin-left: 50px;
}

nav a {
  font-size: 13px;
  color: #aaa;
  text-decoration: none;
  cursor: pointer;
}

.download-btn,
.primary-btn {
  background: #caff00;
  border: 0;
  padding: 12px 25px;
  border-radius: 8px;
  font-weight: 800;
  font-size: 16px;
  color: #08090b;
  text-decoration: none;
}

.download-btn {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  transition:
    transform 0.25s ease,
    background 0.25s ease,
    box-shadow 0.25s ease;
}

.download-icon-wrap {
  display: inline-flex;
  width: 22px;
  height: 22px;
  transition: transform 0.25s ease;
}

.download-icon {
  width: 22px;
  height: 22px;
  display: block;
  fill: #08090b;
}

.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  cursor: pointer;
  transition:
    transform 0.25s ease,
    background 0.25s ease,
    box-shadow 0.25s ease;
  height: 60px;
  font-size: 20px;
}

.download-btn:hover,
.download-btn.is-hovered,
.primary-btn:hover,
.primary-btn.is-hovered {
  background: #efff9a;
  color: #08090b;
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 14px 30px rgba(202, 255, 0, 0.4);
}

.download-btn:hover .download-icon-wrap,
.download-btn.is-hovered .download-icon-wrap,
.primary-btn:hover .download-icon-wrap,
.primary-btn.is-hovered .download-icon-wrap {
  transform: translateY(4px) rotate(6deg);
}

.hero {
  height: auto;
  min-height: 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding-top: 75px;
  padding-bottom: 70px;
}

.hero-glow {
  position: absolute;
  z-index: 0;
  pointer-events: none;
  width: 282px;
  height: 220px;
  border-radius: 50px;
  background: #d1fe17;
  filter: blur(152.25px);
  left: 50%;
  top: 205px;
  transform: translateX(-50%);
}

.hero h1 {
  font-size: 60px;
  position: relative;
  z-index: 1;
}

.hero span,
h2 span {
  color: #caff00;
}

.hero p {
  margin: 25px 0 40px;
  color: #aaa;
  position: relative;
  z-index: 1;
  font-size: 20px;
}

.hero-download-actions {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 auto;
}
.hero .primary-btn {
  position: relative;
  z-index: 1;
}
.mac-primary-btn{
  background: #fff;
}
.linux-primary-btn {
  background: #f5d06f;
  color: #08090b;
}
.hero-video-list {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  margin-top: 46px;
  position: relative;
  z-index: 2;
}

.video-card {
  width: 260px;
  aspect-ratio: 9 / 16;
  height: auto;
  border-radius: 18px;
  overflow: hidden;
  background: #111;
  transition: 0.35s;
  position: relative;
}

.video-card video,
.gallery-grid video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-card:hover {
  transform: translateY(-15px) scale(1.05);
  box-shadow: 0 30px 60px #000;
}

.hero-icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.video-actions {
  position: absolute;
  right: 10px;
  bottom: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: #fff;
  pointer-events: none;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
}

.video-actions span {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.video-actions svg {
  width: 27px;
  height: 27px;
  fill: #fff;
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.65));
}

.video-actions small {
  font-size: 10px;
  line-height: 1;
  color: #fff;
}

section {
  padding: 90px 9%;
}

h2 {
  text-align: center;
  font-size: 36px;
}

.sub {
  text-align: center;
  color: #999;
  margin: 20px;
  font-size: 16px;
}

.features,
.feedback,
.faq {
  background: #111318;
}
.features h2 {
  font-size: 48px;
}
/* 功能卡片区域优化 */
.feature-grid {
  max-width: 1280px;
  margin: 50px auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.feature {
  height: 150px;
  background: #1a1d22;
  border-radius: 16px;
  text-align: center;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: 0.35s;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.feature img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  padding-bottom: 6px;
}

.feature h3 {
  font-size: 16px;
  font-weight: 500;
  color: #fff;
}

.feature p,
.feedback-card p {
  color: #aaa;
  font-size: 13px;
  margin-top: 4px;
  line-height: 20px;
}

.feature:hover {
  transform: translateY(-8px);
  background: #20242b;
  border-color: rgba(202, 255, 0, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

.gallery {
  padding: 60px 10% 80px;
  overflow: hidden;
}

.gallery h2 {
  font-size: 48px;
  font-weight: 600;
}

.gallery-grid {
  max-width: 1400px;
  height: 824px;
  margin: 52px auto 0;
  column-gap: 16px;
  row-gap: 24px;
  position: relative;
  overflow: hidden;
}

.gallery-grid::before,
.gallery-grid::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 64px;
  z-index: 3;
  pointer-events: none;
}

.gallery-grid::before {
  top: 0;
  background: linear-gradient(
    to bottom,
    #08090b 0%,
    rgba(8, 9, 11, 0.8) 38%,
    transparent 100%
  );
}

.gallery-grid::after {
  bottom: 0;
  background: linear-gradient(
    to top,
    #08090b 0%,
    rgba(8, 9, 11, 0.8) 38%,
    transparent 100%
  );
}

.gallery-video-card {
  position: absolute;
  left: 0;
  top: 0;
  offset-anchor: center;
  offset-rotate: 0deg;
  width: 0;
  aspect-ratio: 9 / 16;
  height: auto;
  border-radius: 18px;
  overflow: hidden;
  background: #111;
  transition:
    transform 0.35s ease,
    filter 0.35s ease,
    box-shadow 0.35s ease;
  will-change: transform;
}

.gallery-grid video {
  height: 100%;
  border-radius: 18px;
  background: #111;
}

.gallery-video-card:hover {
  transform: scale(1.035);
  filter: brightness(1.12) saturate(1.05);
  box-shadow: 0 18px 32px rgba(0, 0, 0, 0.38);
  z-index: 2;
}

.gallery-video-card .video-actions svg {
  width: 36px;
  height: 36px;
  padding: 9px;
  box-sizing: border-box;
  border-radius: 50%;
  background: rgba(38, 38, 38, 0.78);
}

.video-card .video-actions svg {
  width: 36px;
  height: 36px;
  padding: 9px;
  box-sizing: border-box;
  border-radius: 50%;
  background: rgba(38, 38, 38, 0.78);
}


@media (max-width: 900px) {
  .header {
    height: auto;
    min-height: 64px;
    padding: 14px 18px;
    flex-wrap: wrap;
    gap: 12px;
  }

  .logo {
    margin-right: auto;
  }

  nav {
    order: 3;
    width: 100%;
    margin-left: 0;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px 18px;
  }

  nav a {
    font-size: 12px;
  }

  .download-btn {
    padding: 9px 12px;
    font-size: 12px;
    gap: 5px;
  }

  .download-btn .download-icon-wrap,
  .download-btn .download-icon {
    width: 16px;
    height: 16px;
  }
}

@media (max-width: 560px) {
  .header {
    align-items: center;
  }

  nav {
    display: none;
  }

  .download-btn {
    margin-left: 0;
    white-space: nowrap;
  }
}
@media (max-width: 900px) {
  .gallery-grid {
    height: 576px;
    row-gap: 16px;
  }
  .hero p {
    margin: 0;
  }
}

@media (max-width: 500px) {
  .gallery-grid {
    height: 516px;
    row-gap: 12px;
  }
}

.stats {
  /* 三个区域统一为 1440px 内容轨道，超宽屏不会向右溢出 */
  --section-inline: max(10%, calc((100% - 1440px) / 2));
  background: #111318;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding: 70px var(--section-inline) 40px;
  position: relative;
}

.stats > div:not(.stats-wave) {
  text-align: center;
  position: relative;
}

.stats > div + div:not(.stats-wave)::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 74px;
  border-left: 1px solid #292c31;
}

.stats strong {
  font-size: 60px;
  color: #caff00;
  font-weight: 500;
}

.stats p {
  text-align: center;
  color: #ddd;
  font-size: 16px;
  margin-top: 14px;
}

.stats-wave {
  grid-column: 1/-1;
  height: 100px;
  margin: 20px calc(-1 * var(--section-inline)) -40px;
}

.stats-wave svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}

.stats-wave path {
  fill: none;
  stroke: #caff00;
  stroke-width: 4;
  filter: drop-shadow(0 0 2px #caff00);
}

.feedback {
  --section-inline: max(10%, calc((100% - 1440px) / 2));
  --intro-width: 440px;
  background: #111318;
  padding: 30px var(--section-inline) 65px;
  display: grid;
  grid-template-columns: var(--intro-width) minmax(0, 1fr);
  gap: 25px;
  align-items: center;
}

.feedback-intro h2 {
  font-size: 40px;
  font-weight: 500;
  text-align: left;
}

.feedback-intro p {
  color: #aaa;
  font-size: 16px;
  line-height: 20px;
  margin-top: 14px;
  text-align: left;
  padding: 0;
  width: 80%;
}

.feedback-list {
  --feedback-gap: 12px;
  --feedback-duration: 24s;
  --feedback-loop-distance: 100%;
  overflow: hidden;
  width: 100%;
  min-width: 0;
  margin: 0;
}

.feedback-track {
  display: flex;
  gap: var(--feedback-gap);
  width: 100%;
  will-change: transform;
}

.feedback-list.is-looping .feedback-track {
  animation: feedbackMarquee var(--feedback-duration) linear infinite;
}

.feedback-list:hover .feedback-track {
  animation-play-state: paused;
}

.feedback-card {
  flex: 0 0 calc((100% - var(--feedback-gap) * 3) / 4);
  background: #1b1e24;
  padding: 20px 18px;
  border-radius: 12px;
  min-height: 166px;
  min-width: 0;
}

@keyframes feedbackMarquee {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(calc(-1 * var(--feedback-loop-distance)));
  }
}

.feedback-user {
  display: flex;
  align-items: center;
  gap: 9px;
}

.feedback-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 13px;
  flex: none;
}

.feedback-card h4 {
  font-size: 20px;
  font-weight: 500;
}

.feedback-card small {
  color: #aaa;
  font-size: 14px;
}

.feedback-card p {
  color: #ddd;
  font-size: 16px;
  line-height: 22px;
  margin-top: 17px;
}

.steps {
  --section-inline: max(10%, calc((100% - 1440px) / 2));
  --intro-width: 440px;
  background: #08090b;
  /* 与上方数据统计、用户反馈区域共用同一组左右边界 */
  padding: 70px var(--section-inline);
}

.steps-layout {
  width: 100%;
  max-width: none;
  margin: 0 auto;
  display: grid;
  grid-template-columns: var(--intro-width) minmax(0, 1fr);
  gap: 25px;
  align-items: center;
}

.steps-intro h2 {
  text-align: left;
  font-size: 40px;
  font-weight: 500;
}

.steps-intro p {
  color: #aaa;
  font-size: 16px;
  margin-top: 14px;
}

.step-list {
  width: 100%;
  /* 流程整体保持紧凑，并在右侧内容区域内居中 */
  max-width: 622px;
  display: grid;
  grid-template-columns: 64px minmax(80px, 1fr) 64px minmax(80px, 1fr) 64px;
  column-gap: 16px;
  align-items: start;
  margin: 0 auto;
}

.step-item {
  width: 64px;
  min-width: 0;
  flex: none;
}

.step-item h3,
.step-item p {
  width: 150px;
}

.step-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #4c6500;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
}

.step-icon img {
  width: 40px;
  height: 40px;
  display: block;
}

.step-list h3 {
  color: #fff;
  font-size: 15px;
  font-weight: 500;
}

.step-list p {
  color: #aaa;
  font-size: 16px;
  line-height: 17px;
  margin-top: 9px;
}

.step-arrow {
  width: 100%;
  min-width: 0;
  border-top: 1px dashed #caff00;
  /* 图标为 64px，32px 正好是圆心高度 */
  margin-top: 32px;
  position: relative;
}

.step-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -5px;
  width: 7px;
  height: 7px;
  border-top: 1px solid #caff00;
  border-right: 1px solid #caff00;
  transform: rotate(45deg);
}

.faq {
  padding: 70px 10% 80px;
}

.faq h2 {
  margin-bottom: 48px;
  font-size: 36px;
}

.faq-list {
  max-width: 60%;
  margin: 0 auto;
  overflow-anchor: none;
}

.faq-item {
  margin: 12px 0;
  background: #08090b;
  border: 1px solid transparent;
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.faq-item.is-open {
  border-color: #caff00;
}

.faq-question {
  width: 100%;
  border: 0;
  background: transparent;
  color: #fff;
  padding: 20px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font: inherit;
  font-size: 20px;
  cursor: pointer;
}

.faq-toggle {
  width: 26px;
  height: 26px;
  border: 1px solid #ddd;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 14px;
  line-height: 12px;
  flex: none;
}

.faq-item.is-open .faq-toggle {
  color: #caff00;
  border-color: #caff00;
}

.faq-chevron {
  width: 9px;
  height: 9px;
  display: block;
  fill: currentColor;
  transition: transform 0.25s ease;
}

.faq-item.is-open .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  height: 0;
  max-height: none;
  box-sizing: border-box;
  padding: 0 14px;
  color: #bbb;
  font-size: 16px;
  line-height: 20px;
  overflow: hidden;
  transition:
    height 0.25s ease,
    padding 0.25s ease;
}

.faq-item.is-open .faq-answer {
  height: 60px;
  padding: 0 14px 20px;
}

.cta {
  background: #caff00;
  color: #000;
  max-width: 1315px;
  margin: 80px auto;
  border-radius: 40px;
  text-align: center;
  padding: 42px 30px 40px;
}

.cta h2 {
  font-size: 48px;
  font-weight: 600;
}

.cta p {
  font-size: 20px;
  margin-top: 14px;
}

.cta-download-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  column-gap: 16px;
}

.cta-download-btn {
  margin-top: 32px;
  padding: 13px 20px;
  border: 0;
  border-radius: 8px;
  background: #08090b;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: inherit;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  transition:
    transform 0.25s ease,
    background 0.25s ease,
    box-shadow 0.25s ease;
}

.cta-download-btn .download-icon-wrap {
  width: 18px;
  height: 18px;
}

.cta-download-btn .download-icon {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.cta-download-btn:hover {
  background: #08090b;
  color: #fff;
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.35);
}

.cta-download-btn:hover .download-icon-wrap {
  transform: translateY(4px) rotate(-12deg);
}
footer {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr) 1.35fr;
  gap: 45px;
  margin: 0 auto;
  padding: 65px 10% 55px;
  color: #aaa;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 7px;
}

.footer-logo .brand-icon {
  width: 35px;
  height: 35px;
}

.footer-logo .brand-title {
  width: 88px;
}

.footer-brand > p {
  font-size: 14px;
  line-height: 20px;
  margin-top: 18px;
}

.footer-socials {
  display: flex;
  gap: 12px;
  margin-top: 22px;
}

.footer-icon,
.wechat-trigger {
  width: 40px;
  height: 40px;
  border: 1px solid #292c31;
  border-radius: 10px;
  background: #15171b;
  color: #aaa;
  display: grid;
  place-items: center;
  position: relative;
  cursor: pointer;
  transition:
    background 0.25s ease,
    color 0.25s ease,
    border-color 0.25s ease;
}

.footer-icon svg,
.wechat-trigger > svg {
  width: 21px;
  height: 21px;
  fill: currentColor;
}

.footer-icon:hover,
.wechat-trigger:hover {
  background: #caff00;
  border-color: #caff00;
  color: #08090b;
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-column h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 7px;
}

.footer-column a,
.footer-column p {
  color: #aaa;
  font-size: 14px;
  text-decoration: none;
  line-height: 20px;
}

.contact-icon {
  width: 15px;
  height: 15px;
  display: inline-block;
  vertical-align: -3px;
  margin-right: 7px;
  fill: currentColor;
}

.footer-column a:hover {
  color: #caff00;
}

.footer-contact p {
  white-space: nowrap;
}


.platform-contact {
  position: relative;
  display: flex;
  align-items: center;
  gap: 7px;
  cursor: default;
}

.platform-contact .contact-icon {
  margin-right: 0;
  flex: none;
}

.contact-logo {
  display: inline-block;
  width: 16px;
  height: 16px;
  flex: none;
}

.xhs-logo {
  width: 16px;
}

.contact-badge {
  display: inline-grid;
  place-items: center;
  width: 15px;
  height: 15px;
  margin-right: 0;
  border-radius: 4px;
  background: #20242b;
  color: #caff00;
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
  flex: none;
}

.platform-contact-qr {
  position: absolute;
  left: 0;
  bottom: 28px;
  width: 140px;
  height: 140px;
  padding: 6px;
  background: #fff;
  border-radius: 8px;
  object-fit: cover;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition:
    opacity 0.2s ease,
    transform 0.2s ease,
    visibility 0.2s ease;
  z-index: 5;
}

.platform-contact:hover .platform-contact-qr {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.wechat-contact {
  position: relative;
  cursor: pointer;
}

.wechat-contact-qr {
  position: absolute;
  left: 0;
  bottom: 28px;
  width: 140px;
  height: 140px;
  padding: 6px;
  background: #fff;
  border-radius: 8px;
  object-fit: contain;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition:
    opacity 0.25s ease,
    transform 0.25s ease,
    visibility 0.25s ease;
  z-index: 3;
}

.wechat-contact:hover .wechat-contact-qr {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.wechat-trigger .wechat-qr {
  display: none;
}

.wechat-qr {
  position: absolute;
  left: 50%;
  bottom: 52px;
  width: 140px;
  height: 140px;
  padding: 6px;
  background: #fff;
  border-radius: 8px;
  object-fit: contain;
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 8px);
  transition:
    opacity 0.25s ease,
    transform 0.25s ease,
    visibility 0.25s ease;
  z-index: 3;
}

.wechat-trigger:hover .wechat-qr,
.wechat-trigger:focus-visible .wechat-qr {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.footer-bottom {
  grid-column: 1/-1;
  border-top: 1px solid #202329;
  padding-top: 24px;
  margin-top: 38px;
  display: flex;
  justify-content: space-between;
  font-size: 14px;
}

.footer-bottom div {
  display: flex;
  gap: 24px;
}

.footer-bottom a {
  color: #aaa;
  text-decoration: none;
}

.footer-bottom a:hover {
  color: #caff00;
}
.reveal {
  opacity: 0;
  transform: translateY(34px) scale(0.98);
  transition:
    opacity 0.65s ease,
    transform 0.65s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.active {
  opacity: 1;
  transform: none;
}

.reveal-item {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.5s ease,
    transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-item.active {
  opacity: 1;
  transform: none;
}

.gallery-grid,
.feedback-list,
.steps-layout,
.faq-list {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s ease 0.12s,
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.12s;
}

.gallery.active .gallery-grid,
.feedback.active .feedback-list,
.steps.active .steps-layout,
.faq.active .faq-list {
  opacity: 1;
  transform: none;
}


@media (max-width: 900px) {
  .feedback-list {
    overflow: visible;
  }

  .feedback-track {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--feedback-gap);
    animation: none !important;
    width: 100%;
    transform: none !important;
  }

  .feedback-card {
    flex: auto;
  }

  .feedback-card[aria-hidden="true"] {
    display: none;
  }
}

@media (max-width: 500px) {
  .feedback-track {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-item,
  .gallery-grid,
  .feedback-list,
  .steps-layout,
  .faq-list {
    opacity: 1;
    transform: none;
    transition: none;
  }
}


@media (max-width: 900px) {
  .stats {
    --section-inline: 24px;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px 0;
  }

  .feedback {
    --section-inline: 24px;
    --intro-width: 100%;
    grid-template-columns: 1fr;
  }

  .feedback-intro h2,
  .feedback-intro p {
    text-align: center;
  }

  .steps {
    padding-top: 55px;
    padding-bottom: 55px;
  }

  .steps-layout {
    gap: 30px;
  }

  .steps-intro h2 {
    font-size: 28px;
  }

  .step-item {
    width: 64px;
  }

  .step-item h3,
  .step-item p {
    width: 145px;
  }

  .faq {
    padding-top: 55px;
    padding-bottom: 65px;
  }

  .faq h2 {
    font-size: 30px;
    margin-bottom: 35px;
  }

  .faq-question {
    padding: 18px 12px;
    font-size: 12px;
  }

  .faq-answer {
    font-size: 11px;
  }

  .cta {
    margin-top: 55px;
    margin-bottom: 55px;
    padding: 35px 18px;
  }

  .cta h2 {
    font-size: 27px;
    line-height: 1.35;
  }

  .cta p {
    font-size: 13px;
  }

  .cta-download-btn {
    margin-top: 25px;
    font-size: 14px;
  }

  footer {
    padding-top: 50px;
    padding-bottom: 40px;
  }
}

@media (max-width: 500px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}



@media (max-width: 900px) {
  .hero-download-actions {
    max-width: 520px;
    padding: 0 24px;
  }

  .hero-download-actions .primary-btn {
    flex: 1 1 calc(50% - 6px);
    min-width: 210px;
    margin: 0 !important;
  }

  .cta-download-actions {
    row-gap: 0;
  }
}

@media (max-width: 560px) {
  .hero-download-actions {
    max-width: 360px;
    padding: 0 18px;
    gap: 10px;
  }

  .hero-download-actions .primary-btn {
    flex-basis: 100%;
    width: 100%;
    min-width: 0;
    min-height: 48px;
    font-size: 15px;
  }

  .cta-download-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-download-btn {
    justify-content: center;
    width: 100%;
  }
}


@media (max-width: 900px) {
  .hero {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero h1 {
    max-width: 100%;
    font-size: clamp(34px, 10vw, 48px);
    line-height: 1.18;
  }

  .hero p {
    max-width: 330px;
    margin: 18px auto 26px;
    font-size: 14px;
    line-height: 1.6;
  }

  .hero-video-list {
    justify-content: flex-start;
    width: 100%;
    max-width: 100%;
    gap: 12px;
    margin-top: 28px;
    padding: 0 4px 10px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }

  .hero-video-list::-webkit-scrollbar {
    display: none;
  }

  .hero .video-card {
    width: clamp(66px, 20vw, 96px);
    flex: 0 0 clamp(66px, 20vw, 96px);
    border-radius: 10px;
    scroll-snap-align: start;
  }

  .hero .video-actions {
    display: none;
  }
}

@media (max-width: 560px) {
  .hero {
    padding-top: 56px;
    padding-bottom: 52px;
  }

  .hero h1 {
    font-size: 32px;
  }
}


/* Mobile footer layout */
@media (max-width: 900px) {
  footer {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px 24px;
    padding: 52px 24px 36px;
  }

  .footer-brand,
  .footer-contact,
  .footer-bottom {
    grid-column: 1 / -1;
  }

  .footer-brand > p {
    max-width: 280px;
  }

  .footer-column {
    min-width: 0;
  }

  .footer-column h4 {
    margin-bottom: 4px;
  }

  .footer-column a,
  .footer-column p {
    word-break: normal;
    overflow-wrap: anywhere;
  }

  .footer-contact p {
    white-space: normal;
  }

  .footer-bottom {
    flex-wrap: wrap;
    gap: 16px;
  }

  .footer-bottom div {
    flex-wrap: wrap;
    gap: 12px 18px;
  }
}

@media (max-width: 560px) {
  footer {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 48px 24px 34px;
  }

  .footer-brand {
    display: grid;
    justify-items: start;
  }

  .footer-column {
    gap: 10px;
  }

  .footer-column h4 {
    font-size: 16px;
  }

  .footer-column a,
  .footer-column p {
    font-size: 14px;
    line-height: 1.7;
  }

  .footer-bottom {
    margin-top: 8px;
    padding-top: 22px;
    flex-direction: column;
    align-items: flex-start;
  }
}
/* Mobile step flow */
@media (max-width: 900px) {
  .steps {
    padding-left: 24px;
    padding-right: 24px;
  }

  .steps-layout {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 32px;
  }

  .steps-intro {
    width: 100%;
    text-align: center;
  }

  .steps-intro h2,
  .steps-intro p {
    text-align: center;
  }

  .step-list {
    width: min(100%, 320px);
    max-width: 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    margin: 0 auto;
  }

  .step-item {
    width: 100%;
    display: grid;
    justify-items: center;
    text-align: center;
  }

  .step-item h3,
  .step-item p {
    width: 100%;
  }

  .step-icon {
    margin-bottom: 14px;
  }

  .step-arrow {
    width: 1px;
    height: 34px;
    min-width: 0;
    margin: 14px 0 18px;
    border-top: 0;
    border-left: 1px dashed #caff00;
  }

  .step-arrow::after {
    left: -4px;
    right: auto;
    top: auto;
    bottom: -1px;
    transform: rotate(135deg);
  }
}

@media (max-width: 560px) {
  .steps {
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .step-list {
    width: min(100%, 280px);
    max-width: 280px;
  }

  .step-list p {
    font-size: 13px;
    line-height: 1.5;
  }
}
/* 下载系统选择弹窗 */
.download-dialog {
  box-sizing: border-box;
  width: min(620px, calc(100% - 32px));
  max-height: calc(100dvh - 32px);
  margin: auto;
  padding: 44px 32px 28px;
  color: #fff;
  background: #111318;
  border: 1px solid #30352a;
  border-radius: 24px;
  box-shadow: 0 32px 100px rgba(0, 0, 0, 0.6);
  overflow-y: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.download-dialog::-webkit-scrollbar {
  display: none;
}

.download-dialog::backdrop {
  background: rgba(0, 0, 0, 0.76);
  backdrop-filter: blur(8px);
}

body:has(.download-dialog[open]) {
  overflow: hidden;
}

.download-close {
  display: grid;
  place-items: center;
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 10px;
  background: #22252b;
  color: #aaa;
  font: inherit;
  cursor: pointer;
}

.download-close svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.download-close:hover {
  color: #fff;
  background: #343840;
}

.download-dialog-heading {
  text-align: center;
}

.download-eyebrow {
  color: #caff00;
  font-size: 12px;
  letter-spacing: 2px;
}

.download-dialog h2 {
  margin: 14px 0 10px;
  font-size: 28px;
}

.download-dialog-heading p {
  color: #999da6;
  font-size: 14px;
  line-height: 1.6;
}
.download-version {
  width: max-content;
  max-width: 100%;
  margin: 10px auto 0;
  padding: 6px 12px;
  border: 1px solid rgba(202, 255, 0, 0.24);
  border-radius: 999px;
  background: rgba(202, 255, 0, 0.08);
  color: #caff00;
  font-size: 12px;
  line-height: 1.4;
}

.download-options {
  display: grid;
  gap: 14px;
  max-height: min(448px, calc(100dvh - 260px));
  margin-top: 28px;
  padding-right: 4px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.download-options::-webkit-scrollbar {
  width: 6px;
}

.download-options::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: #3b432a;
}

.download-option {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px;
  border: 1px solid #353d24;
  border-radius: 16px;
  background: #191c21;
  color: #fff;
  text-decoration: none;
  transition:
    background 0.2s ease,
    border-color 0.2s ease;
}

.download-option:hover {
  background: #22271c;
  border-color: #caff00;
}

.download-os-icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  flex: none;
  border-radius: 14px;
  color: #caff00;
  background: #2b3517;
}

.download-os-icon svg {
  width: 30px;
  height: 30px;
  fill: currentColor;
}

.download-option-mac .download-os-icon {
  color: #81c9ff;
  background: #1c3041;
}

.download-option-linux .download-os-icon {
  color: #f5d06f;
  background: #3b3219;
}

.download-option-text {
  display: grid;
  gap: 7px;
}

.download-option-text strong {
  font-size: 21px;
}

.download-option-text > span {
  color: #c2c5cc;
  font-size: 14px;
}

.download-option-text small {
  color: #90959f;
  font-size: 12px;
}

.download-option-arrow {
  display: flex;
  flex: none;
  margin-left: auto;
  color: #caff00;
}

.download-option-arrow .download-icon {
  fill: currentColor;
}

.download-note {
  margin-top: 22px;
  color: #90959f;
  font-size: 12px;
  line-height: 1.7;
  text-align: center;
}

.download-dialog :focus-visible {
  outline: 2px solid #caff00;
  outline-offset: 4px;
}

@media (max-width: 500px) {
  .download-dialog {
    padding: 54px 20px 24px;
    border-radius: 20px;
  }

  .download-dialog h2 {
    font-size: 24px;
  }

  .download-option {
    padding: 16px 12px;
    gap: 12px;
  }

  .download-os-icon {
    width: 44px;
    height: 44px;
  }

  .download-option-text > span {
    font-size: 12px;
  }
}

/* 大屏各区域共用参考视口比例，超宽屏同时受高度约束。 */
@media (min-width: 1600px) {
  :root {
    --page-unit: max(1px, min(0.048828125vw, 0.098425197svh));
    --page-scale: calc(var(--page-unit) / 1px);
  }

  body > section:not(.hero),
  body > footer,
  .download-dialog {
    zoom: var(--page-scale);
  }

  .download-dialog {
    width: min(620px, calc((100vw - 32px) / var(--page-scale)));
    max-height: calc((100dvh - 32px) / var(--page-scale));
  }

  .header,
  .hero {
    --hero-unit: var(--page-unit);
  }

  .header {
    height: calc(70 * var(--hero-unit));
    padding-inline: calc(80 * var(--hero-unit));
  }

  .header .logo {
    gap: calc(7 * var(--hero-unit));
  }

  .header .brand-icon {
    width: calc(35 * var(--hero-unit));
    height: calc(35 * var(--hero-unit));
  }

  .header .brand-title {
    width: calc(88 * var(--hero-unit));
  }

  .header nav {
    gap: calc(35 * var(--hero-unit));
    margin-left: calc(50 * var(--hero-unit));
  }

  .header nav a {
    font-size: calc(13 * var(--hero-unit));
  }

  .header .download-btn {
    padding: calc(12 * var(--hero-unit)) calc(25 * var(--hero-unit));
    font-size: calc(16 * var(--hero-unit));
    gap: calc(7 * var(--hero-unit));
    border-radius: calc(8 * var(--hero-unit));
  }

  .hero {
    height: auto;
    min-height: 0;
    padding-top: calc(75 * var(--hero-unit));
    padding-bottom: calc(70 * var(--hero-unit));
  }

  .hero h1 {
    font-size: calc(60 * var(--hero-unit));
  }

  .hero p {
    font-size: calc(20 * var(--hero-unit));
    margin: calc(25 * var(--hero-unit)) 0 calc(40 * var(--hero-unit));
  }


.hero .primary-btn {
    height: calc(60 * var(--hero-unit));
    padding: calc(12 * var(--hero-unit)) calc(25 * var(--hero-unit));
    font-size: calc(20 * var(--hero-unit));
    gap: calc(7 * var(--hero-unit));
    border-radius: calc(8 * var(--hero-unit));
  }

  .header .download-icon-wrap,
  .header .download-icon,
  .hero .download-icon-wrap,
  .hero .download-icon {
    width: calc(22 * var(--hero-unit));
    height: calc(22 * var(--hero-unit));
  }

  .hero-video-list {
    gap: calc(24 * var(--hero-unit));
    margin-top: calc(46 * var(--hero-unit));
  }

  .hero .video-card {
    width: calc(260 * var(--hero-unit));
    height: auto;
    border-radius: calc(18 * var(--hero-unit));
    flex: none;
  }

  .hero .video-actions {
    right: calc(10 * var(--hero-unit));
    bottom: calc(14 * var(--hero-unit));
    gap: calc(12 * var(--hero-unit));
  }

  .hero .video-actions span {
    gap: calc(3 * var(--hero-unit));
  }

  .hero .video-actions svg {
    width: calc(36 * var(--hero-unit));
    height: calc(36 * var(--hero-unit));
    padding: calc(9 * var(--hero-unit));
  }

  .hero .video-actions small {
    font-size: calc(10 * var(--hero-unit));
  }

  .hero-glow {
    width: calc(282 * var(--hero-unit));
    height: calc(220 * var(--hero-unit));
    top: calc(205 * var(--hero-unit));
    border-radius: calc(50 * var(--hero-unit));
    filter: blur(calc(152.25 * var(--hero-unit)));
  }
}

/* 视频操作区随卡片宽度同步缩放，避免小尺寸下图标显得过大。 */
.video-card,
.gallery-video-card {
  container-type: inline-size;
}

.video-card .video-actions,
.gallery-video-card .video-actions {
  width: max-content;
  right: 4cqw;
  bottom: 3.5cqw;
  gap: 4cqw;
}

.video-card .video-actions span,
.gallery-video-card .video-actions span {
  gap: 1.2cqw;
}

.video-card .video-actions svg,
.gallery-video-card .video-actions svg {
  width: 14cqw;
  height: 14cqw;
  padding: 3.5cqw;
}

.video-card .video-actions small,
.gallery-video-card .video-actions small {
  font-size: clamp(7px, 3.85cqw, 18px);
}
/* Mobile horizontal scroll sections */
@media (max-width: 900px) {
  .stats {
    --section-inline: 24px;
    grid-template-columns: repeat(4, minmax(168px, 1fr));
    gap: 0;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
  }

  .stats::-webkit-scrollbar {
    display: none;
  }

  .stats > div:not(.stats-wave) {
    min-width: 168px;
    scroll-snap-align: center;
  }

  .stats strong {
    font-size: clamp(42px, 13vw, 58px);
    white-space: nowrap;
  }

  .stats-wave {
    min-width: 672px;
  }

  .feedback-list {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .feedback-list::-webkit-scrollbar {
    display: none;
  }

  .feedback-track {
    display: flex;
    grid-template-columns: none;
    gap: 12px;
    width: max-content;
    min-width: 100%;
    animation: none !important;
    transform: none !important;
  }

  .feedback-card {
    flex: 0 0 min(86vw, 360px);
    scroll-snap-align: center;
  }

  .feedback-card[aria-hidden="true"] {
    display: none;
  }
}

@media (max-width: 500px) {
  .feedback-track {
    grid-template-columns: none;
    gap: 10px;
  }

  .feedback-card {
    flex-basis: calc(100vw - 48px);
  }
}
/* Mobile FAQ and footer refinement */
@media (max-width: 900px) {
  .faq {
    padding: 64px 20px 70px;
  }

  .faq h2 {
    margin-bottom: 28px;
    font-size: clamp(28px, 8vw, 36px);
    line-height: 1.2;
  }

  .faq-list {
    max-width: 100%;
  }

  .faq-item {
    margin: 12px 0;
    border-radius: 14px;
  }

  .faq-question {
    min-height: 68px;
    padding: 18px 14px;
    gap: 14px;
    font-size: 15px;
    line-height: 1.45;
    text-align: left;
  }

  .faq-toggle {
    width: 28px;
    height: 28px;
    flex: 0 0 28px;
  }

  .faq-answer {
    padding: 0 14px;
    font-size: 14px;
    line-height: 1.65;
  }

  .faq-item.is-open .faq-answer {
    height: auto;
    min-height: 72px;
    padding: 0 14px 20px;
  }
}

@media (max-width: 560px) {
  footer {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px 14px;
    padding: 44px 20px 32px;
  }

  .footer-brand,
  .footer-contact,
  .footer-bottom {
    grid-column: 1 / -1;
  }

  .footer-brand > p {
    max-width: 300px;
  }

  .footer-column {
    gap: 9px;
  }

  .footer-column h4 {
    margin-bottom: 2px;
    font-size: 15px;
    line-height: 1.3;
  }

  .footer-column a,
  .footer-column p {
    font-size: 12px;
    line-height: 1.6;
    white-space: normal;
    overflow-wrap: normal;
    word-break: keep-all;
  }

  .footer-contact {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 16px;
  }

  .footer-contact h4 {
    grid-column: 1 / -1;
  }

  .footer-contact p {
    display: flex;
    align-items: center;
    gap: 7px;
    min-width: 0;
    font-size: 13px;
    line-height: 1.5;
  }

  .footer-contact p:first-of-type {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    margin-top: 2px;
    padding-top: 20px;
  }
}
/* Mobile auto-looping scroll */
.stats-track {
  display: contents;
}

.stat-clone {
  display: none;
}

@media (max-width: 900px) {
  .stats.is-mobile-looping {
    display: block;
    padding: 70px 24px 92px;
    overflow: hidden;
  }

  .stats.is-mobile-looping .stats-track {
    display: flex;
    gap: 0;
    overflow-x: hidden;
    overflow-y: hidden;
    scroll-snap-type: none;
  }

  .stats.is-mobile-looping .stat-item,
  .stats.is-mobile-looping .stat-clone {
    display: block;
    flex: 0 0 calc(100vw - 48px);
    min-width: calc(100vw - 48px);
    text-align: center;
  }

  .stats.is-mobile-looping .stat-item::before,
  .stats.is-mobile-looping .stat-clone::before {
    display: none;
  }

  .stats.is-mobile-looping .stats-wave {
    display: block;
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    min-width: 100%;
    height: 88px;
    margin: 0;
    pointer-events: none;
  }

  .stats.is-mobile-looping strong {
    display: block;
    font-size: clamp(54px, 17vw, 72px);
    line-height: 1;
    white-space: nowrap;
  }

  .stats.is-mobile-looping p {
    margin-top: 18px;
    font-size: 16px;
  }

  .feedback-list.is-mobile-looping {
    overflow-x: hidden;
    scroll-snap-type: none;
  }

  .feedback-list.is-mobile-looping .feedback-track {
    display: flex;
    width: max-content;
    min-width: 100%;
    animation: none !important;
    transform: none !important;
  }

  .feedback-list.is-mobile-looping .feedback-card[aria-hidden="true"] {
    display: block;
  }
}
/* FAQ image toggles */
.faq-toggle {
  border: 0;
  background: url("../images/activenot.png") center / contain no-repeat;
  color: transparent;
}

.faq-item.is-open .faq-toggle {
  border-color: transparent;
  background-image: url("../images/active.png");
  color: transparent;
}

.faq-chevron {
  display: none;
}




/* ==================== 多语言切换 ==================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans", "Yu Gothic", "Microsoft YaHei", Arial, sans-serif;
}

.language-switcher {
  margin-left: auto;
  position: relative;
  flex: none;
}

.language-select {
  height: 42px;
  min-width: 108px;
  padding: 0 32px 0 12px;
  border: 1px solid #2d3036;
  border-radius: 8px;
  outline: none;
  background: #15171b;
  color: #f5f5f5;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  color-scheme: dark;
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}

.language-select:hover,
.language-select:focus {
  border-color: #caff00;
  background: #1c1f24;
  box-shadow: 0 0 0 3px rgba(202, 255, 0, .08);
}

.header .language-switcher + .download-btn {
  margin-left: 12px;
  white-space: nowrap;
}

html[lang="ru"] .header nav {
  gap: 22px;
}

html[lang="ru"] .header nav a {
  font-size: 12px;
}

html[lang="ru"] .hero h1 {
  max-width: 1320px;
  margin-inline: auto;
}

html[lang="ru"] .download-option-copy,
html[lang="en"] .download-option-copy {
  min-width: 0;
}

@media (max-width: 900px) {
  .language-switcher {
    margin-left: 0;
  }

  .language-select {
    height: 38px;
    min-width: 98px;
    padding-left: 10px;
    padding-right: 26px;
    font-size: 12px;
  }

  .header .language-switcher + .download-btn {
    margin-left: 0;
  }
}

@media (max-width: 560px) {
  .language-select {
    min-width: 84px;
    max-width: 92px;
  }
}