:root {
  --cream: #f1ede4;
  --paper: #fffdf8;
  --black: #151515;
  --ink: #24211e;
  --muted: #6e6a64;
  --line: #d8d1c6;
  --red: #de3d36;
  --red-dark: #bc2e29;
  --peach: #f3b9a8;
  --blue: #31546f;
  --white: #ffffff;
  --shell: 1180px;
  --shadow: 0 30px 85px rgba(27, 24, 20, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

code {
  padding: 2px 6px;
  color: var(--red-dark);
  background: #f4e8e3;
  font-family: Consolas, Monaco, monospace;
  font-size: 0.9em;
}

.skip-link {
  position: fixed;
  top: -90px;
  left: 18px;
  z-index: 1000;
  padding: 11px 16px;
  color: var(--white);
  background: var(--black);
  font-weight: 850;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 18px;
}

.header-shell,
.hero-shell,
.desk-shell,
.answer-shell,
.section-shell,
.final-shell,
.footer-shell {
  width: min(calc(100% - 40px), var(--shell));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  color: var(--black);
  background: rgba(241, 237, 228, 0.96);
  border-bottom: 1px solid rgba(21, 21, 21, 0.14);
  backdrop-filter: blur(18px);
}

.header-shell {
  min-height: 78px;
  display: grid;
  grid-template-columns: 210px 1fr 170px;
  gap: 28px;
  align-items: center;
}

.brand {
  width: max-content;
}

.brand img,
.footer-brand img {
  width: auto;
  height: 38px;
  object-fit: contain;
}

.site-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 33px;
  color: #625e58;
  font-size: 13px;
  font-weight: 780;
}

.site-nav a {
  position: relative;
  padding: 26px 0 24px;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 17px;
  height: 2px;
  background: var(--red);
  transition: right 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--black);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  right: 0;
}

.header-download {
  justify-self: end;
  min-width: 160px;
  padding: 11px 15px;
  color: var(--white);
  background: var(--black);
  border: 1px solid var(--black);
  text-align: center;
  font-size: 13px;
  font-weight: 850;
  transition: color 0.2s ease, background 0.2s ease;
}

.header-download:hover,
.header-download:focus-visible {
  color: var(--black);
  background: transparent;
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid rgba(21, 21, 21, 0.22);
  cursor: pointer;
}

.menu-button span {
  display: block;
  width: 19px;
  height: 2px;
  margin: 4px auto;
  background: var(--black);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 104px 0 76px;
  background:
    linear-gradient(90deg, transparent 49.9%, rgba(21, 21, 21, 0.06) 50%, transparent 50.1%),
    var(--cream);
}

.hero::before {
  content: "PC";
  position: absolute;
  left: 50%;
  top: 38px;
  transform: translateX(-50%);
  color: rgba(21, 21, 21, 0.035);
  font-size: min(34vw, 490px);
  font-weight: 950;
  line-height: 0.8;
  letter-spacing: -0.13em;
  pointer-events: none;
}

.hero-shell {
  position: relative;
  z-index: 2;
  max-width: 980px;
  text-align: center;
}

.eyebrow,
.section-label {
  margin: 0 0 16px;
  color: var(--red);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  color: var(--black);
  font-size: clamp(52px, 7.5vw, 94px);
  line-height: 1;
  letter-spacing: -0.065em;
}

.hero-copy {
  max-width: 780px;
  margin: 28px auto 0;
  color: #5f5a54;
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 22px;
  margin-top: 36px;
}

.primary-button {
  min-width: 270px;
  min-height: 58px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 14px 21px;
  color: var(--white);
  background: var(--red);
  font-weight: 900;
  box-shadow: 0 16px 35px rgba(222, 61, 54, 0.24);
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.primary-button:hover,
.primary-button:focus-visible {
  transform: translateY(-2px);
  background: var(--red-dark);
  box-shadow: 0 20px 42px rgba(222, 61, 54, 0.3);
}

.primary-button b {
  font-size: 21px;
}

.text-button {
  position: relative;
  padding: 13px 0 9px;
  color: var(--black);
  border-bottom: 1px solid var(--black);
  font-size: 14px;
  font-weight: 850;
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 60px;
  border-top: 1px solid rgba(21, 21, 21, 0.18);
  border-left: 1px solid rgba(21, 21, 21, 0.18);
}

.hero-facts div {
  min-height: 104px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 18px 20px;
  border-right: 1px solid rgba(21, 21, 21, 0.18);
  border-bottom: 1px solid rgba(21, 21, 21, 0.18);
}

.hero-facts span {
  color: #77716a;
  font-size: 11px;
  font-weight: 800;
}

.hero-facts strong {
  margin-top: 4px;
  color: var(--black);
  font-size: 17px;
}

.download-desk {
  padding: 0 0 48px;
  background: var(--cream);
}

.desk-shell {
  min-height: 150px;
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) 210px 170px;
  align-items: stretch;
  color: var(--white);
  background: var(--black);
  box-shadow: var(--shadow);
}

.desk-index {
  display: grid;
  place-content: center;
  text-align: center;
  background: var(--red);
}

.desk-index span {
  font-size: 35px;
  font-weight: 950;
  line-height: 1;
}

.desk-index small {
  margin-top: 7px;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.desk-app {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 18px;
  align-items: center;
  padding: 28px 32px;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.desk-app img {
  width: 68px;
  height: 68px;
  border-radius: 16px;
}

.desk-app p {
  margin: 0;
  color: #8d8983;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.13em;
}

.desk-app h2 {
  margin: 3px 0 1px;
  font-size: 24px;
  line-height: 1.2;
}

.desk-app span {
  color: #aaa59e;
  font-size: 12px;
}

.desk-status {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 25px;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.status-dot {
  width: 11px;
  height: 11px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: #56cf8d;
  box-shadow: 0 0 0 6px rgba(86, 207, 141, 0.12);
}

.desk-status small,
.desk-status strong {
  display: block;
}

.desk-status small {
  color: #848079;
  font-size: 10px;
  font-weight: 800;
}

.desk-status strong {
  margin-top: 3px;
  font-size: 13px;
}

.desk-button {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--black);
  background: var(--peach);
  font-size: 14px;
  font-weight: 900;
  transition: background 0.2s ease;
}

.desk-button:hover,
.desk-button:focus-visible {
  background: #ffcab9;
}

.answer-band {
  color: var(--white);
  background: var(--blue);
}

.answer-shell {
  min-height: 84px;
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 22px;
  align-items: center;
  padding-block: 18px;
}

.answer-shell strong {
  color: #ffd2c6;
  font-size: 13px;
}

.answer-shell p {
  margin: 0;
  color: #dbe7ee;
  font-size: 14px;
}

.section {
  padding: 106px 0;
}

.about-section {
  background: var(--paper);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.65fr 1.35fr;
  gap: 90px;
  align-items: start;
}

.about-title {
  position: sticky;
  top: 112px;
}

.about-title h2,
.section-intro h2,
.installation-copy h2,
.compare-header h2,
.answers-heading h2,
.faq-title h2 {
  margin: 0;
  color: var(--black);
  font-size: clamp(32px, 4.2vw, 53px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.about-lead {
  margin: 0;
  color: var(--black);
  font-size: 23px;
  font-weight: 680;
  line-height: 1.65;
}

.about-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  margin-top: 34px;
  padding-top: 33px;
  border-top: 1px solid var(--line);
}

.about-columns p {
  margin: 0;
  color: var(--muted);
}

.about-note {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 22px;
  margin-top: 40px;
  padding: 24px 26px;
  color: var(--white);
  background: var(--black);
}

.about-note span {
  color: var(--peach);
  font-size: 12px;
  font-weight: 900;
}

.about-note p {
  margin: 0;
  color: #c8c2ba;
  font-size: 14px;
}

.configuration-section {
  background: var(--cream);
}

.section-intro {
  max-width: 850px;
}

.section-intro > p:last-child {
  max-width: 700px;
  margin: 22px 0 0;
  color: var(--muted);
}

.configuration-table {
  margin-top: 50px;
  border-top: 3px solid var(--black);
  border-left: 1px solid var(--line);
  background: var(--paper);
}

.table-head,
.table-row {
  display: grid;
  grid-template-columns: 1fr 0.8fr 0.95fr 1.35fr;
}

.table-head {
  min-height: 54px;
  color: var(--white);
  background: var(--black);
}

.table-head span {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 11px;
  font-weight: 900;
}

.table-row {
  min-height: 100px;
  border-bottom: 1px solid var(--line);
}

.table-row > * {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 18px 20px;
  border-right: 1px solid var(--line);
}

.table-row > div {
  gap: 14px;
}

.table-row b {
  color: var(--red);
  font-size: 11px;
}

.table-row strong {
  color: var(--black);
  font-size: 16px;
}

.table-row > span {
  color: var(--blue);
  font-size: 15px;
  font-weight: 850;
}

.table-row > p {
  color: var(--muted);
  font-size: 13px;
}

.configuration-summary {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 23px;
  border-left: 1px solid rgba(21, 21, 21, 0.18);
  border-top: 1px solid rgba(21, 21, 21, 0.18);
}

.configuration-summary div {
  padding: 23px 26px;
  border-right: 1px solid rgba(21, 21, 21, 0.18);
  border-bottom: 1px solid rgba(21, 21, 21, 0.18);
}

.configuration-summary span,
.configuration-summary strong {
  display: block;
}

.configuration-summary span {
  color: var(--red);
  font-size: 11px;
  font-weight: 900;
}

.configuration-summary strong {
  margin-top: 6px;
  color: var(--black);
  font-size: 16px;
}

.installation-section {
  background: var(--paper);
}

.installation-grid {
  display: grid;
  grid-template-columns: 0.68fr 1.32fr;
  gap: 90px;
  align-items: start;
}

.installation-copy {
  position: sticky;
  top: 112px;
}

.installation-copy > p:not(.section-label) {
  margin: 22px 0 0;
  color: var(--muted);
}

.inline-download {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 26px;
  padding: 11px 19px;
  color: var(--white);
  background: var(--red);
  font-size: 13px;
  font-weight: 900;
}

.installation-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--black);
}

.installation-list li {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 25px;
  padding: 29px 0;
  border-bottom: 1px solid var(--line);
}

.installation-list > li > span {
  color: var(--red);
  font-size: 12px;
  font-weight: 900;
}

.installation-list h3 {
  margin: -5px 0 8px;
  color: var(--black);
  font-size: 21px;
}

.installation-list p {
  margin: 0;
  color: var(--muted);
}

.compare-section {
  color: var(--white);
  background: var(--black);
}

.compare-header {
  display: grid;
  grid-template-columns: 1fr 0.7fr;
  gap: 80px;
  align-items: end;
}

.compare-header h2 {
  color: var(--white);
}

.compare-header > p {
  margin: 0;
  color: #a39d95;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.17);
  border-left: 1px solid rgba(255, 255, 255, 0.17);
}

.compare-grid article {
  min-height: 290px;
  padding: 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.17);
  border-bottom: 1px solid rgba(255, 255, 255, 0.17);
}

.compare-grid article.current {
  color: var(--black);
  background: var(--peach);
}

.compare-grid span {
  color: var(--peach);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.13em;
}

.compare-grid article.current span {
  color: var(--red-dark);
}

.compare-grid h3 {
  margin: 60px 0 13px;
  font-size: 20px;
  line-height: 1.4;
}

.compare-grid p {
  margin: 0;
  color: #aaa49b;
  font-size: 14px;
}

.compare-grid article.current p {
  color: #5d453e;
}

.compare-grid a {
  display: inline-flex;
  margin-top: 25px;
  padding-bottom: 4px;
  color: var(--black);
  border-bottom: 1px solid var(--black);
  font-size: 13px;
  font-weight: 900;
}

.answers-section {
  background: var(--cream);
}

.answers-grid {
  display: grid;
  grid-template-columns: 0.62fr 1.38fr;
  gap: 80px;
  align-items: start;
}

.answers-heading {
  position: sticky;
  top: 112px;
}

.answers-heading > p:not(.section-label) {
  margin: 22px 0 0;
  color: var(--muted);
}

.answers-list {
  border-top: 2px solid var(--black);
}

.answers-list article {
  display: grid;
  grid-template-columns: 48px 1fr 90px;
  gap: 22px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.answer-number {
  color: var(--red);
  font-size: 12px;
  font-weight: 900;
}

.answers-list h3 {
  margin: -4px 0 8px;
  color: var(--black);
  font-size: 19px;
}

.answers-list p {
  margin: 0;
  color: var(--muted);
}

.answers-list article > span {
  justify-self: end;
  color: #8b857e;
  font-size: 11px;
  font-weight: 850;
}

.faq-section {
  background: var(--paper);
}

.faq-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.65fr) minmax(0, 1.35fr);
  gap: 90px;
  align-items: start;
}

.faq-title {
  position: sticky;
  top: 112px;
}

.faq-title > p:not(.section-label) {
  margin: 22px 0 0;
  color: var(--muted);
}

.faq-list {
  border-top: 2px solid var(--black);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  padding: 25px 56px 25px 0;
  color: var(--black);
  font-size: 17px;
  font-weight: 850;
  cursor: pointer;
  list-style: none;
}

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

.faq-list summary span {
  position: absolute;
  right: 5px;
  top: 23px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  color: var(--red);
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: transform 0.2s ease;
}

.faq-list details[open] summary span {
  transform: rotate(45deg);
}

.faq-list details p {
  max-width: 760px;
  margin: -4px 0 25px;
  color: var(--muted);
}

.final-download {
  padding: 0 0 94px;
  background: var(--paper);
}

.final-shell {
  min-height: 280px;
  display: grid;
  grid-template-columns: 1fr 230px;
  gap: 60px;
  align-items: center;
  padding: 55px 60px;
  color: var(--white);
  background:
    linear-gradient(115deg, rgba(21, 21, 21, 0.98), rgba(50, 39, 34, 0.96)),
    var(--black);
}

.final-shell p {
  margin: 0 0 13px;
  color: var(--peach);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.final-shell h2 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(28px, 3.6vw, 46px);
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.final-shell > div > span {
  display: block;
  margin-top: 18px;
  color: #a9a29a;
  font-size: 12px;
}

.final-button {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 22px;
  color: var(--white);
  background: var(--red);
  font-weight: 900;
  transition: transform 0.2s ease, background 0.2s ease;
}

.final-button:hover,
.final-button:focus-visible {
  transform: translateY(-3px);
  background: var(--red-dark);
}

.final-button b {
  font-size: 23px;
}

.site-footer {
  padding: 58px 0 36px;
  color: #a7a29b;
  background: #101010;
}

.footer-shell {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 35px 60px;
  align-items: start;
}

.footer-brand img {
  filter: brightness(0) invert(1);
}

.footer-brand p {
  max-width: 680px;
  margin: 18px 0 0;
  color: #77726c;
  font-size: 12px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 8px 27px;
  font-size: 12px;
  font-weight: 760;
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--white);
}

.copyright {
  grid-column: 1 / -1;
  margin: 8px 0 0;
  padding-top: 23px;
  color: #5b5752;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 11px;
}

.mobile-download {
  display: none;
}

@media (max-width: 1020px) {
  .header-shell {
    grid-template-columns: 190px 1fr 160px;
  }

  .site-nav {
    gap: 20px;
  }

  .desk-shell {
    grid-template-columns: 100px minmax(0, 1fr) 180px 150px;
  }

  .about-grid,
  .installation-grid,
  .answers-grid,
  .faq-grid {
    gap: 50px;
  }
}

@media (max-width: 840px) {
  html {
    scroll-padding-top: 72px;
  }

  .header-shell {
    min-height: 70px;
    grid-template-columns: 1fr auto;
  }

  .brand img {
    height: 34px;
  }

  .header-download {
    display: none;
  }

  .menu-button {
    display: block;
  }

  .site-nav {
    position: absolute;
    left: 20px;
    right: 20px;
    top: calc(100% + 8px);
    display: none;
    padding: 10px;
    background: var(--cream);
    border: 1px solid rgba(21, 21, 21, 0.16);
    box-shadow: 0 22px 55px rgba(21, 21, 21, 0.18);
  }

  .site-nav.is-open {
    display: grid;
  }

  .site-nav a {
    padding: 12px 13px;
  }

  .site-nav a::after {
    display: none;
  }

  .desk-shell {
    grid-template-columns: 100px 1fr 150px;
  }

  .desk-status {
    display: none;
  }

  .answer-shell {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .about-grid,
  .installation-grid,
  .answers-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .about-title,
  .installation-copy,
  .answers-heading,
  .faq-title {
    position: static;
  }

  .table-head,
  .table-row {
    grid-template-columns: 1fr 0.8fr 0.95fr;
  }

  .table-head span:last-child {
    display: none;
  }

  .table-row > p {
    grid-column: 1 / -1;
    border-top: 1px solid var(--line);
  }

  .compare-header {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .compare-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .final-shell {
    grid-template-columns: 1fr;
  }

  .final-button {
    width: min(100%, 270px);
  }

  .footer-shell {
    grid-template-columns: 1fr;
  }

  .copyright {
    grid-column: auto;
  }
}

@media (max-width: 600px) {
  .header-shell,
  .hero-shell,
  .desk-shell,
  .answer-shell,
  .section-shell,
  .final-shell,
  .footer-shell {
    width: min(calc(100% - 28px), var(--shell));
  }

  body {
    padding-bottom: 72px;
  }

  .hero {
    padding: 66px 0 54px;
  }

  .hero h1 {
    font-size: clamp(43px, 13vw, 61px);
  }

  .hero-copy {
    font-size: 16px;
  }

  .hero-actions {
    display: grid;
    gap: 12px;
  }

  .primary-button {
    width: 100%;
    min-width: 0;
  }

  .text-button {
    justify-self: center;
  }

  .hero-facts {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 45px;
  }

  .hero-facts div {
    min-height: 88px;
    padding: 14px;
  }

  .download-desk {
    padding-bottom: 30px;
  }

  .desk-shell {
    grid-template-columns: 76px 1fr;
  }

  .desk-index {
    grid-row: 1 / 3;
  }

  .desk-app {
    grid-template-columns: 54px 1fr;
    padding: 19px 16px;
    border-right: 0;
  }

  .desk-app img {
    width: 54px;
    height: 54px;
    border-radius: 13px;
  }

  .desk-app h2 {
    font-size: 18px;
  }

  .desk-button {
    min-height: 50px;
    grid-column: 2;
  }

  .section {
    padding: 68px 0;
  }

  .about-title h2,
  .section-intro h2,
  .installation-copy h2,
  .compare-header h2,
  .answers-heading h2,
  .faq-title h2 {
    font-size: clamp(30px, 10vw, 40px);
  }

  .about-lead {
    font-size: 19px;
  }

  .about-columns {
    grid-template-columns: 1fr;
  }

  .about-note {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .configuration-table {
    overflow: hidden;
  }

  .table-head {
    display: none;
  }

  .table-row {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .table-row > * {
    padding: 8px 0;
    border-right: 0;
  }

  .table-row > p {
    grid-column: auto;
    border-top: 1px solid var(--line);
  }

  .table-row > span::before {
    display: inline-block;
    width: 78px;
    color: #77716a;
    font-size: 10px;
    font-weight: 800;
  }

  .table-row > span:nth-child(2)::before {
    content: "最低要求";
  }

  .table-row > span:nth-child(3)::before {
    content: "推荐配置";
  }

  .configuration-summary {
    grid-template-columns: 1fr;
  }

  .installation-list li {
    grid-template-columns: 42px 1fr;
    gap: 15px;
  }

  .installation-list h3 {
    font-size: 18px;
  }

  .compare-grid {
    grid-template-columns: 1fr;
  }

  .compare-grid article {
    min-height: 0;
  }

  .compare-grid h3 {
    margin-top: 30px;
  }

  .answers-list article {
    grid-template-columns: 38px 1fr;
    gap: 12px;
  }

  .answers-list article > span {
    grid-column: 2;
    justify-self: start;
  }

  .faq-list summary {
    font-size: 15px;
  }

  .final-download {
    padding-bottom: 70px;
  }

  .final-shell {
    padding: 38px 24px;
  }

  .footer-nav {
    grid-template-columns: 1fr 1fr;
  }

  .mobile-download {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 120;
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 9px 14px;
    color: var(--white);
    background: rgba(16, 16, 16, 0.97);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(16px);
  }

  .mobile-download > div {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .mobile-download img {
    width: 44px;
    height: 44px;
    border-radius: 11px;
  }

  .mobile-download small,
  .mobile-download strong {
    display: block;
    line-height: 1.2;
  }

  .mobile-download small {
    color: #8d8881;
    font-size: 10px;
  }

  .mobile-download strong {
    margin-top: 3px;
    font-size: 13px;
  }

  .mobile-download > a {
    flex: 0 0 auto;
    padding: 11px 14px;
    color: var(--white);
    background: var(--red);
    font-size: 13px;
    font-weight: 900;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}