:root {
  --color-bg: #f6f1ea;
  --color-surface: #faf6f0;
  --color-ink: #26251e;
  --color-ink-soft: #504f49;
  --color-border: #979696;
  --color-chip-bg: #efe9e2;
  --font-sans: "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
  --font-mincho: "Huiwen Mincho", "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
  --font-display: "Questrial", "Century Gothic", "Avenir Next", "LinkX Sans", sans-serif;
  --font-linkx-sans: "LinkX Sans", "PingFang SC", -apple-system, "Microsoft YaHei", sans-serif;
  --font-heiti: "Heiti SC", "STHeiti", "PingFang SC", "Microsoft YaHei", sans-serif;
}

@font-face {
  font-family: "Huiwen Mincho";
  src: url("assets/huiwen-mincho-subset.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "LinkX Sans";
  src: url("assets/linkx-sans-subset.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "LinkX Sans Medium";
  src: url("assets/linkx-sans-medium-subset.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

.hero {
  position: relative;
  height: 592px;
  overflow: hidden;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-color: var(--color-bg);
  background-image: url("assets/hero-bg.png");
  background-size: 1024px 576px;
  background-position: center bottom;
  background-repeat: no-repeat;
  -webkit-mask-image:
    linear-gradient(to right, transparent, #000 10%, #000 90%, transparent),
    linear-gradient(to bottom, transparent, #000 8%, #000 92%, transparent);
  mask-image:
    linear-gradient(to right, transparent, #000 10%, #000 90%, transparent),
    linear-gradient(to bottom, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-composite: source-in;
  mask-composite: intersect;
  z-index: 0;
}

.hero__mask {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  display: block;
}

.hero__figure {
  position: absolute;
  right: clamp(12px, 4.5vw, 72px);
  bottom: 0;
  z-index: 2;
  height: min(600px, 96%);
  width: auto;
  max-width: min(520px, 46vw);
  object-fit: contain;
  object-position: right bottom;
  pointer-events: none;
  user-select: none;
}

.hero__logo-link {
  position: absolute;
  top: 20px;
  left: 32px;
  height: 30px;
  z-index: 3;
  display: block;
}

.hero__logo {
  display: block;
  height: 30px;
  width: auto;
}

.hero__nav-link.is-active::after {
  transform: scaleX(1);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 65px;
  background: var(--color-bg);
}

.site-header .hero__logo-link {
  position: absolute;
  top: 20px;
  left: 32px;
}

.site-header .hero__divider {
  top: auto;
  bottom: 0;
}

.site-header .hero__bar {
  position: absolute;
  top: 24px;
  right: 25px;
}

.hero__divider {
  position: absolute;
  top: 65px;
  left: 0;
  right: 0;
  height: 1px;
  background: #efe9e2;
  z-index: 3;
}

.hero__bar {
  position: absolute;
  top: 24px;
  right: 25px;
  height: 15.32px;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero__lang {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: var(--color-ink);
}

.hero__lang-trigger {
  gap: 5px;
}

.hero__lang-icon {
  width: 18px;
  height: 18px;
  display: block;
}

.hero__nav-menu.hero__lang-menu {
  min-width: 132px;
  left: auto;
  right: 0;
  transform: translateY(6px);
}

.hero__lang.hero__nav-dropdown:hover .hero__lang-menu,
.hero__lang.hero__nav-dropdown:focus-within .hero__lang-menu {
  transform: translateY(2px);
}

.hero__lang-option {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  cursor: pointer;
}

.hero__lang-option.is-active {
  background: rgba(0, 0, 0, 0.06);
}

.hero__nav {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-family: "LinkX Sans Medium", var(--font-linkx-sans);
}

.hero__nav-dropdown-trigger {
  padding: 8px 12px;
  margin: 0 6px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.hero__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 6px;
  padding: 8px 12px;
  background: transparent;
  border: none;
  color: #000;
  font-family: "LinkX Sans Medium", var(--font-linkx-sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}

.hero__nav-link::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  bottom: 0;
  height: 2.5px;
  background: #000;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s;
}

.hero__nav-link:hover::after,
.hero__lang:hover .hero__lang-trigger::after {
  transform: scaleX(1);
}

.hero__lang-trigger {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.hero__lang-trigger::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  bottom: -2px;
  height: 2.5px;
  background: #000;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s;
}

.hero__nav-caret {
  width: 16px;
  height: 16px;
  color: currentcolor;
}

.hero__nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.hero__nav-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 160px;
  display: flex;
  flex-direction: column;
  padding: 12px 8px;
  background: var(--color-surface);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
  z-index: 10;
}

.hero__nav-dropdown:hover .hero__nav-menu,
.hero__nav-dropdown:focus-within .hero__nav-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(2px);
}

.hero__nav-menu-item {
  display: block;
  padding: 8px 14px;
  border-radius: 8px;
  color: #000;
  font-family: var(--font-linkx-sans);
  font-size: 15px;
  font-weight: 400;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.15s;
}

.hero__nav-menu-item:hover {
  background: rgba(0, 0, 0, 0.06);
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 809px;
  margin: 0 auto;
  padding-top: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.hero__heading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
  text-align: center;
  width: 100%;
}

.hero__title {
  margin: 0;
  font-family: "LinkX Sans Medium", var(--font-linkx-sans);
  font-size: 50px;
  font-weight: 600;
  letter-spacing: 0.4px;
  color: var(--color-ink);
}

.hero__subtitle {
  margin: 0;
  font-family: var(--font-mincho);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.4px;
  line-height: 1.5;
  color: var(--color-ink);
  white-space: nowrap;
  max-width: min(940px, 94vw);
}

.hero__subtitle .char {
  display: none;
}

.hero__subtitle .char.is-typed {
  display: inline;
}

.hero__subtitle .type-caret {
  display: inline-block;
  width: 2px;
  height: 1.05em;
  margin-left: 2px;
  background: currentcolor;
  vertical-align: -0.18em;
  animation: sub-caret 0.75s step-end infinite;
}

.hero__subtitle.is-done .type-caret {
  animation: none;
  opacity: 0;
}

@keyframes sub-caret {
  50% {
    opacity: 0;
  }
}

.install {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.platform-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: var(--color-chip-bg);
  border-radius: 46px;
}

.platform-switch__option {
  padding: 9px 16px;
  background: transparent;
  border: none;
  border-radius: 46px;
  font-family: var(--font-linkx-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.4px;
  line-height: 1;
  color: rgba(39, 39, 42, 0.45);
  cursor: pointer;
  transition: background-color 200ms, color 200ms, box-shadow 200ms;
}

.platform-switch__option:hover {
  color: var(--color-ink);
}

.platform-switch__option.is-active {
  background: var(--color-surface);
  color: var(--color-ink);
  box-shadow: 0 1px 3px rgba(38, 37, 30, 0.12);
}

.platform-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 600px;
  max-width: 100%;
  min-height: 55px;
  padding: 12px 16px 12px 20px;
  background: var(--color-chip-bg);
  border-radius: 10px;
  transition: background-color 280ms;
}

.hero:hover .platform-panel {
  background-color: var(--color-surface);
}

@media (hover: none) {
  .hero:hover .platform-panel {
    background-color: var(--color-chip-bg);
  }
}

.platform-panel__info {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  flex: 1;
}

.platform-panel__logo {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  color: var(--color-ink);
}

.platform-panel__meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.platform-panel__name {
  font-family: var(--font-linkx-sans);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.4px;
  color: var(--color-ink);
  line-height: 1.2;
}

.platform-panel__version {
  font-family: var(--font-linkx-sans);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.2px;
  color: var(--color-ink-soft);
  line-height: 1.2;
}

.platform-panel__download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-shrink: 0;
  height: 36px;
  padding: 0 18px;
  border-radius: 46px;
  background: var(--color-ink);
  color: #fafafa;
  font-family: var(--font-linkx-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.24px;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--color-ink);
  transition: background-color 200ms, border-color 200ms, transform 200ms;
  white-space: nowrap;
}

.platform-panel__download:hover {
  background: #3a3933;
  border-color: #3a3933;
  transform: translateY(-1px);
}

.platform-panel__download-icon {
  width: 16px;
  height: 16px;
  filter: brightness(0) invert(1);
}

.platform-panel__coming {
  display: none;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  height: 36px;
  padding: 0 18px;
  border-radius: 46px;
  background: rgba(38, 37, 30, 0.08);
  color: var(--color-ink-soft);
  font-family: var(--font-linkx-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.4px;
  white-space: nowrap;
}

.platform-panel.is-coming-soon .platform-panel__download {
  display: none;
}

.platform-panel.is-coming-soon .platform-panel__coming {
  display: inline-flex;
}

.ctas {
  display: flex;
  gap: 20px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  min-width: 130px;
  padding: 10px 41px;
  border-radius: 46px;
  font-family: "Microsoft Sans Serif", var(--font-linkx-sans);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.24px;
  text-decoration: none;
  cursor: pointer;
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-border);
  transition: transform 200ms, background-color 200ms, color 200ms, border-color 200ms;
  white-space: nowrap;
}

.btn:hover {
  background: var(--color-ink);
  color: #fafafa;
  border-color: var(--color-ink);
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--color-ink);
  color: #fafafa;
  border-color: var(--color-ink);
}

.btn--primary:hover {
  background: #3a3933;
  border-color: #3a3933;
}

.btn__arrow {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0;
  margin-left: -16px;
  transition: opacity 200ms, margin-left 200ms;
}

.btn:hover .btn__arrow,
.btn--primary .btn__arrow {
  opacity: 1;
  margin-left: 10px;
}

.features {
  padding: 40px 0 60px;
  background: var(--color-bg);
}

.footer {
  background: #efe9e2;
  border-radius: 0;
  min-height: 290px;
  padding: 40px 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.8px;
  color: #504f49;
  text-align: center;
}

.footer__sep {
  color: #b1b1b1;
  user-select: none;
}

.footer__link {
  color: inherit;
  text-decoration: underline 0.5px;
  text-underline-offset: 3px;
  transition: color 200ms;
}

.footer__link:hover {
  color: var(--color-ink);
}

.footer__btn {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  letter-spacing: inherit;
  color: inherit;
  cursor: pointer;
  transition: color 200ms;
}

.footer__btn:hover {
  color: var(--color-ink);
}

.contact-qq-wrap {
  position: relative;
  display: inline-block;
}

.contact-qq__trigger {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  letter-spacing: inherit;
  color: inherit;
  cursor: pointer;
  text-decoration: underline 0.5px;
  text-underline-offset: 3px;
  transition: color 200ms;
}

.contact-qq__trigger:hover {
  color: var(--color-ink);
}

.contact-qq__qrcode {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  z-index: 30;
  padding: 10px;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-50%) translateY(4px);
  transition:
    opacity 0.2s ease,
    visibility 0.2s ease,
    transform 0.2s ease;
}

.contact-qq__qrcode::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  width: 0;
  height: 0;
  border: 8px solid transparent;
  border-top-color: #fff;
  transform: translateX(-50%);
}

.contact-qq__qrcode img {
  display: block;
  width: 200px;
  height: auto;
  border-radius: 6px;
}

.contact-qq-wrap:hover .contact-qq__qrcode,
.contact-qq-wrap:focus-within .contact-qq__qrcode,
.contact-qq-wrap.is-open .contact-qq__qrcode {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.docs-section .contact-qq__trigger {
  color: var(--color-ink);
}

.docs-section .contact-qq__trigger:hover {
  color: var(--color-ink-soft);
}

.features__title {
  margin: 0 0 35px;
  text-align: center;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 500;
  letter-spacing: 0.4px;
  color: var(--color-ink);
}

.features__list {
  display: flex;
  flex-direction: column;
  gap: 43px;
  width: 1100px;
  max-width: calc(100% - 80px);
  margin: 0 auto;
}

.features__list--text {
  gap: 20px;
}

.card--text {
  height: auto;
  min-height: 0;
  padding: 28px 36px;
  background: var(--color-surface);
}

.card--text .card__text {
  position: static;
  width: auto;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.card {
  position: relative;
  width: 100%;
  height: 360px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--color-bg);
}

.card__art {
  position: absolute;
  top: 0;
  left: 0;
  width: 58%;
  height: 100%;
  overflow: hidden;
}

.card__art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 42% center;
  -webkit-mask-image:
    linear-gradient(to right, transparent, #000 72px, #000 calc(100% - 72px), transparent),
    linear-gradient(to bottom, transparent, #000 48px, #000 calc(100% - 48px), transparent);
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(to right, transparent, #000 72px, #000 calc(100% - 72px), transparent),
    linear-gradient(to bottom, transparent, #000 48px, #000 calc(100% - 48px), transparent);
  mask-composite: intersect;
}

.card__text {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 331px;
  letter-spacing: 0;
}

.card__text h3 {
  margin: 0;
  font-family: var(--font-mincho);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.447;
  color: var(--color-ink);
}

.card__text h3 .char {
  display: none;
  white-space: pre;
}

.card__text h3 .char.is-typed {
  display: inline-block;
}

.card__text h3 .cursor {
  display: inline-block;
  width: 2px;
  height: 18px;
  background: currentcolor;
  vertical-align: middle;
  margin-left: 3px;
  margin-bottom: 2px;
  opacity: 0;
  transition: opacity 180ms;
}

.card__text h3.is-active .cursor {
  opacity: 1;
}

.card__text h3.is-done .cursor {
  animation: cursor-blink 1s steps(2) infinite;
}

@keyframes cursor-blink {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

.card__text p {
  margin: 0;
  font-family: var(--font-linkx-sans);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.447;
  color: var(--color-ink-soft);
}

.card--1 .card__text {
  left: 648px;
  top: 136px;
}

.card--2 .card__art {
  left: auto;
  right: 0;
}

.card--2 .card__art img {
  object-position: 55% center;
}

.card--2 .card__text {
  left: 129px;
  top: 130px;
}

.card--3 .card__art img {
  object-position: 40% center;
}

.card--3 .card__text {
  left: 645px;
  top: 114px;
}

.card--4 .card__art {
  left: auto;
  right: 0;
}

.card--4 .card__art img {
  object-position: 52% center;
}

.card--4 .card__text {
  left: 122px;
  top: 107px;
}

.card--5 .card__art img {
  object-position: 38% center;
}

.card--5 .card__text {
  left: 670px;
  top: 112px;
}

@media (max-width: 640px) {
  .hero {
    height: 425px;
    max-width: none;
    margin: 0;
  }

  .hero__logo-link,
  .site-header .hero__logo-link {
    top: 30px;
    left: 20px;
    height: 24px;
  }

  .hero__logo {
    height: 24px;
  }

  .hero__divider {
    top: 66px;
  }

  .hero__bar {
    top: 29px;
    right: 19px;
    gap: 0;
  }

  .hero__nav {
    display: none;
  }

  .hero__lang-icon {
    width: 18px;
    height: 18px;
  }

  .hero__bg {
    top: 67px;
    bottom: auto;
    height: 218px;
    background-size: 387px 218px;
    background-position: center bottom;
  }

  .hero__mask {
    display: none;
  }

  .hero__figure {
    right: -12px;
    height: 220px;
    max-width: 46vw;
    opacity: 0.92;
  }

  .hero__content {
    padding-top: 129px;
    gap: 0;
    max-width: none;
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero__heading {
    gap: 19px;
  }

  .hero__title {
    font-size: 30px;
  }

  .hero__subtitle {
    font-size: 14px;
    line-height: 1.6;
    white-space: normal;
  }

  .install {
    width: 100%;
    margin-top: 54px;
    gap: 12px;
  }

  .platform-switch__option {
    padding: 6px 12px;
    font-size: 11px;
  }

  .platform-panel {
    width: 100%;
    max-width: 300px;
    min-height: auto;
    padding: 12px 14px;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .platform-panel__download,
  .platform-panel__coming {
    width: 100%;
    height: 33px;
    font-size: 13px;
  }

  .ctas {
    width: 100%;
    max-width: 300px;
    gap: 13px;
    margin-top: 20px;
  }

  .btn {
    flex: 1;
    height: 33px;
    min-width: 0;
    padding: 0 12px;
    font-size: 14px;
  }

  .btn__arrow {
    width: 12px;
    height: 12px;
  }

  .features {
    padding: 30px 0 50px;
  }

  .features__title {
    font-size: 22px;
    margin: 0 20px 35px;
  }

  .features__list {
    width: auto;
    max-width: none;
    margin: 0 20px;
    gap: 30px;
  }

  .card,
  .card--1,
  .card--2,
  .card--3,
  .card--4,
  .card--5 {
    height: auto;
    min-height: 200px;
    padding: 40px 20px;
  }

  .card__art {
    position: relative;
    width: calc(100% + 40px);
    height: 200px;
    margin: -40px -20px 24px;
  }

  .card__art img {
    object-position: center 35%;
    -webkit-mask-image:
      linear-gradient(to right, transparent, #000 40px, #000 calc(100% - 40px), transparent),
      linear-gradient(to bottom, transparent, #000 32px, #000 calc(100% - 32px), transparent);
    mask-image:
      linear-gradient(to right, transparent, #000 40px, #000 calc(100% - 40px), transparent),
      linear-gradient(to bottom, transparent, #000 32px, #000 calc(100% - 32px), transparent);
  }

  .card__text,
  .card--1 .card__text,
  .card--2 .card__text,
  .card--3 .card__text,
  .card--4 .card__text,
  .card--5 .card__text {
    position: static;
    width: auto;
    margin: 0;
    left: auto;
    top: auto;
  }

  .card__text h3 {
    font-size: 18px;
  }

  .card__text p {
    font-size: 14px;
  }

  .footer {
    min-height: 217px;
    padding: 36px;
  }

  .footer__inner {
    font-size: 9px;
    letter-spacing: 0.3px;
    gap: 5px;
  }
}

@media (hover: none) {
  .hero__mask {
    display: none;
  }
}