:root {
  --bg: #1d1917;
  --bg-soft: #29221f;
  --surface: #f3eee7;
  --surface-white: #fffdf9;
  --ink: #211d1b;
  --muted: #726a65;
  --line: rgba(33, 29, 27, 0.13);
  --coral: #e77d61;
  --coral-soft: #f4c2b4;
  --orange: #efaa59;
  --cream: #f0dfbc;
  --olive: #788768;
  --olive-soft: #dce2d4;
  --blue: #6f87a4;
  --container: 1180px;
  --radius-lg: 32px;
  --radius-md: 20px;
  --shadow-lg: 0 34px 90px rgba(35, 24, 20, 0.21);
  --shadow-md: 0 18px 50px rgba(35, 24, 20, 0.09);
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--surface);
  font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.section {
  padding: 108px 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 9999;
  padding: 11px 16px;
  color: #fff;
  background: #000;
  border-radius: 8px;
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  color: #fff;
  background: rgba(29, 25, 23, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  transition: background 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(29, 25, 23, 0.98);
  box-shadow: 0 15px 38px rgba(0, 0, 0, 0.2);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 25px;
}

.brand {
  min-width: 260px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand img {
  width: 104px;
  height: 42px;
  object-fit: contain;
  filter: brightness(1.08);
}

.brand > span {
  padding-left: 14px;
  display: flex;
  flex-direction: column;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
  line-height: 1.2;
}

.brand strong {
  color: var(--coral-soft);
  font-size: 10px;
  letter-spacing: 0.11em;
}

.brand small {
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.55);
  font-size: 10px;
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 23px;
}

.site-nav a {
  position: relative;
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  font-weight: 700;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--coral);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-cta {
  padding: 11px 18px;
  color: var(--bg);
  background: var(--coral-soft);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 900;
  transition: transform 180ms ease, background 180ms ease;
}

.header-cta:hover,
.header-cta:focus-visible {
  background: #ffd7ca;
  transform: translateY(-2px);
}

.nav-toggle {
  width: 46px;
  height: 42px;
  margin-left: auto;
  padding: 0;
  display: none;
  place-content: center;
  gap: 5px;
  color: #fff;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  cursor: pointer;
}

.nav-toggle span {
  width: 21px;
  height: 2px;
  display: block;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 77% 17%, rgba(231, 125, 97, 0.16), transparent 31%),
    linear-gradient(130deg, #191513 0%, #251d19 62%, #35251e 100%);
}

.hero-lines {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: linear-gradient(to right, #000, transparent 89%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  min-height: 780px;
  padding-top: 77px;
  padding-bottom: 108px;
}

.hero-top {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: 76px;
}

.hero-kicker {
  margin-bottom: 22px;
  display: inline-block;
  color: var(--coral-soft);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(47px, 5.4vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.hero h1 span {
  margin-top: 16px;
  display: block;
  color: var(--cream);
  font-size: clamp(24px, 2.9vw, 39px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.hero-lead {
  max-width: 700px;
  margin: 27px 0 0;
  color: rgba(255, 255, 255, 0.64);
  font-size: 14px;
  line-height: 1.95;
}

.hero-actions {
  margin-top: 33px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.primary-cta {
  min-width: 270px;
  min-height: 68px;
  padding: 10px 17px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  color: var(--bg);
  background: var(--coral-soft);
  border-radius: 18px;
  box-shadow: 0 20px 45px rgba(231, 125, 97, 0.17);
  transition: transform 180ms ease, background 180ms ease;
}

.primary-cta:hover,
.primary-cta:focus-visible {
  background: #ffd7ca;
  transform: translateY(-4px);
}

.primary-cta > span {
  display: flex;
  flex-direction: column;
}

.primary-cta small {
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.primary-cta strong {
  margin-top: 4px;
  font-size: 13px;
}

.primary-cta i {
  font-style: normal;
  font-size: 19px;
}

.secondary-cta {
  color: rgba(255, 255, 255, 0.7);
  font-size: 11px;
  font-weight: 900;
  border-bottom: 1px solid rgba(231, 125, 97, 0.52);
}

.hero-device {
  margin-top: 23px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.55);
  font-size: 11px;
}

.hero-device > span {
  width: 8px;
  height: 8px;
  display: inline-block;
  background: var(--orange);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(239, 170, 89, 0.11);
}

.hero-device.is-mobile > span {
  background: var(--coral);
  box-shadow: 0 0 0 6px rgba(231, 125, 97, 0.11);
}

.release-board {
  position: relative;
  overflow: hidden;
  background: #fffaf5;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transform: rotate(1.1deg);
}

.release-board__header {
  min-height: 51px;
  padding: 0 19px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #766b65;
  background: #f5ece4;
  border-bottom: 1px solid rgba(33, 29, 27, 0.08);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.release-board__header strong {
  color: var(--coral);
}

.release-board__body {
  padding: 20px;
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 17px;
}

.release-ring {
  width: 142px;
  height: 142px;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at center, #fffaf5 43%, transparent 44%),
    conic-gradient(var(--coral) 0 27%, var(--orange) 27% 55%, var(--olive) 55% 79%, #ded6cd 79%);
  border-radius: 50%;
}

.release-ring > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--ink);
}

.release-ring span {
  color: var(--coral);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.release-ring strong {
  margin-top: 3px;
  font-size: 17px;
}

.release-details {
  display: grid;
  gap: 8px;
}

.release-details article {
  min-height: 66px;
  padding: 10px 12px;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  background: #f7f1eb;
  border: 1px solid rgba(33, 29, 27, 0.08);
  border-radius: 12px;
}

.release-details article > span {
  width: 29px;
  height: 29px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--bg);
  border-radius: 9px;
  font-size: 8px;
  font-weight: 900;
}

.release-details article > div {
  display: flex;
  flex-direction: column;
}

.release-details strong {
  font-size: 10px;
}

.release-details small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 8px;
}

.release-board__image {
  min-height: 225px;
  margin: 0 20px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at center, rgba(231, 125, 97, 0.13), transparent 58%),
    #f3ebe4;
  border: 1px solid rgba(33, 29, 27, 0.08);
  border-radius: 18px;
}

.release-board__image img {
  width: 91%;
  max-height: 235px;
  object-fit: contain;
}

.release-board__footer {
  min-height: 57px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: #786e68;
  font-size: 8px;
}

.release-board__footer strong {
  color: var(--coral);
}

.hero-metrics {
  margin-top: 50px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  background: var(--coral-soft);
  border-radius: 22px;
  box-shadow: 0 24px 65px rgba(35, 24, 20, 0.22);
}

.hero-metrics article {
  min-height: 88px;
  padding: 15px 18px;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 12px;
  color: var(--bg);
  border-right: 1px solid rgba(29, 25, 23, 0.14);
}

.hero-metrics article:last-child {
  border-right: 0;
}

.hero-metrics article > span {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--coral-soft);
  background: var(--bg);
  border-radius: 10px;
  font-size: 8px;
  font-weight: 900;
}

.hero-metrics strong,
.hero-metrics small {
  grid-column: 2;
}

.hero-metrics strong {
  margin-bottom: -14px;
  font-size: 11px;
}

.hero-metrics small {
  color: rgba(29, 25, 23, 0.57);
  font-size: 8px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 44px;
}

.section-heading--center {
  margin-inline: auto;
  text-align: center;
}

.section-heading--split {
  max-width: none;
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  align-items: end;
  gap: 75px;
}

.section-kicker {
  margin-bottom: 12px;
  display: inline-block;
  color: var(--coral);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.section-heading h2,
.prepare-copy h2,
.route-copy h2,
.faq-copy h2 {
  margin: 0;
  font-size: clamp(34px, 4.2vw, 53px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.section-heading p,
.prepare-copy > p,
.route-copy > p,
.faq-copy > p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.95;
}

.section-heading:not(.section-heading--split) p,
.prepare-copy > p,
.route-copy > p,
.faq-copy > p {
  margin-top: 17px;
}

.decision-section {
  background: var(--surface);
}

.decision-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 13px;
}

.decision-grid button {
  min-height: 170px;
  padding: 21px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  background: var(--surface-white);
  border: 1px solid var(--line);
  border-radius: 20px;
  cursor: pointer;
  text-align: left;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.decision-grid button:hover,
.decision-grid button.is-active {
  border-color: rgba(231, 125, 97, 0.55);
  box-shadow: 0 17px 42px rgba(35, 24, 20, 0.07);
  transform: translateY(-5px);
}

.decision-grid button > span {
  width: 37px;
  height: 37px;
  display: grid;
  place-items: center;
  color: var(--bg);
  background: var(--coral-soft);
  border-radius: 12px;
  font-size: 9px;
  font-weight: 900;
}

.decision-grid strong {
  margin-top: 18px;
  font-size: 15px;
}

.decision-grid small {
  margin-top: 6px;
  color: var(--muted);
  font-size: 9px;
}

.decision-result {
  margin-top: 16px;
  padding: 22px 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 25px;
  color: #fff;
  background: var(--bg);
  border-radius: 18px;
}

.decision-result > div {
  display: flex;
  flex-direction: column;
}

.decision-result span {
  color: var(--coral-soft);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.decision-result h3 {
  margin: 7px 0 0;
  font-size: 19px;
}

.decision-result p {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.55);
  font-size: 10px;
}

.decision-result a {
  padding: 11px 16px;
  color: var(--bg);
  background: var(--coral-soft);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 900;
}

.prepare-section {
  color: #fff;
  background:
    radial-gradient(circle at 15% 20%, rgba(231, 125, 97, 0.12), transparent 31%),
    var(--bg);
}

.prepare-layout {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  align-items: center;
  gap: 82px;
}

.prepare-copy > p {
  color: rgba(255, 255, 255, 0.56);
}

.prepare-progress {
  margin-top: 32px;
  padding: 21px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
}

.prepare-progress > div:first-child {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.prepare-progress span,
.prepare-progress strong {
  font-size: 10px;
}

.prepare-progress strong {
  color: var(--coral-soft);
}

.prepare-progress i {
  font-style: normal;
}

.progress-track {
  height: 8px;
  margin-top: 12px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.09);
  border-radius: 999px;
}

.progress-track span {
  width: 0;
  height: 100%;
  display: block;
  background: linear-gradient(90deg, var(--coral), var(--orange));
  border-radius: inherit;
  transition: width 220ms ease;
}

.prepare-progress p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 9px;
}

.prepare-list {
  display: grid;
  gap: 12px;
}

.prepare-list label {
  min-height: 92px;
  position: relative;
  padding: 15px 17px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 15px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 17px;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.prepare-list label:hover {
  background: rgba(255, 255, 255, 0.07);
  transform: translateX(5px);
}

.prepare-list label:has(input:checked) {
  background: rgba(231, 125, 97, 0.1);
  border-color: rgba(231, 125, 97, 0.48);
}

.prepare-list input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.prepare-number {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--bg);
  background: var(--coral-soft);
  border-radius: 13px;
  font-size: 9px;
  font-weight: 900;
}

.prepare-text {
  display: flex;
  flex-direction: column;
}

.prepare-text small {
  color: var(--coral-soft);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.11em;
}

.prepare-text strong {
  margin-top: 4px;
  font-size: 12px;
}

.prepare-text p {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.47);
  font-size: 9px;
}

.prepare-mark {
  width: 29px;
  height: 29px;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
}

.prepare-list input:checked ~ .prepare-mark {
  background: var(--coral);
  border-color: var(--coral);
}

.prepare-list input:checked ~ .prepare-mark::after {
  position: absolute;
  top: 7px;
  left: 7px;
  width: 10px;
  height: 6px;
  content: "";
  border-bottom: 2px solid #fff;
  border-left: 2px solid #fff;
  transform: rotate(-45deg);
}

.update-flow {
  background: var(--surface);
}

.flow-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.flow-track article {
  min-height: 300px;
  padding: 24px;
  position: relative;
  overflow: hidden;
  background: var(--surface-white);
  border: 1px solid var(--line);
  border-radius: 21px;
}

.flow-track article::after {
  position: absolute;
  right: -45px;
  bottom: -45px;
  width: 125px;
  height: 125px;
  content: "";
  background: rgba(231, 125, 97, 0.11);
  border-radius: 50%;
}

.flow-index {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  color: var(--bg);
  background: var(--coral-soft);
  border-radius: 15px;
  font-size: 10px;
  font-weight: 900;
}

.flow-track article > div {
  position: relative;
  z-index: 1;
  margin-top: 37px;
}

.flow-track small {
  color: var(--coral);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.flow-track h3 {
  margin: 9px 0 0;
  font-size: 18px;
}

.flow-track p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.9;
}

.device-route {
  background: #e8e4db;
}

.route-layout {
  display: grid;
  grid-template-columns: 0.65fr 1.35fr;
  align-items: center;
  gap: 70px;
}

.route-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 13px;
}

.route-cards article {
  min-height: 280px;
  padding: 23px;
  display: flex;
  flex-direction: column;
  background: var(--surface-white);
  border: 1px solid var(--line);
  border-radius: 20px;
}

.route-cards article > span {
  color: var(--coral);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.route-cards h3 {
  margin: 13px 0 0;
  font-size: 18px;
}

.route-cards p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.9;
}

.route-cards a {
  margin-top: auto;
  padding-top: 20px;
  color: var(--bg);
  font-size: 10px;
  font-weight: 900;
}

.problem-section {
  background: var(--surface-white);
}

.problem-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 25px;
  box-shadow: var(--shadow-md);
}

.problem-tabs {
  padding: 17px;
  display: grid;
  gap: 8px;
  background: var(--bg);
}

.problem-tabs button {
  min-height: 64px;
  padding: 10px 13px;
  display: flex;
  align-items: center;
  gap: 13px;
  color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 13px;
  cursor: pointer;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
}

.problem-tabs button:hover,
.problem-tabs button[aria-selected="true"] {
  color: var(--bg);
  background: var(--coral-soft);
}

.problem-tabs span {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 9px;
  font-size: 8px;
  font-weight: 900;
}

.problem-panels {
  min-height: 410px;
  padding: 43px;
}

.problem-panels article[hidden] {
  display: none;
}

.problem-panels article > span {
  color: var(--coral);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.problem-panels h3 {
  margin: 13px 0 0;
  font-size: 30px;
  line-height: 1.2;
}

.problem-panels p {
  max-width: 700px;
  margin: 15px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.95;
}

.problem-panels ol {
  margin: 27px 0 0;
  padding: 21px 0 0 20px;
  display: grid;
  gap: 9px;
  color: #514943;
  border-top: 1px solid var(--line);
  font-size: 11px;
}

.problem-links {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.problem-links a {
  padding: 19px 21px;
  display: flex;
  flex-direction: column;
  background: #f2ece5;
  border: 1px solid var(--line);
  border-radius: 17px;
  transition: transform 180ms ease, border-color 180ms ease;
}

.problem-links a:hover,
.problem-links a:focus-visible {
  border-color: rgba(231, 125, 97, 0.5);
  transform: translateY(-4px);
}

.problem-links span {
  color: var(--muted);
  font-size: 9px;
}

.problem-links strong {
  margin-top: 4px;
  font-size: 11px;
}

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

.faq-layout {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  align-items: start;
  gap: 86px;
}

.faq-copy {
  position: sticky;
  top: calc(var(--header-height) + 32px);
}

.faq-download {
  margin-top: 27px;
  padding: 11px 17px;
  display: inline-flex;
  color: var(--bg);
  background: var(--coral-soft);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 900;
}

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

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

.faq-list summary {
  min-height: 83px;
  padding: 20px 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  list-style: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 800;
}

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

.faq-list summary i {
  width: 31px;
  height: 31px;
  position: relative;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 11px;
  height: 1px;
  content: "";
  background: var(--ink);
  transform: translate(-50%, -50%);
}

.faq-list summary i::after {
  transform: translate(-50%, -50%) rotate(90deg);
  transition: transform 180ms ease;
}

.faq-list details[open] summary i {
  background: var(--coral-soft);
  border-color: var(--coral-soft);
}

.faq-list details[open] summary i::after {
  transform: translate(-50%, -50%) rotate(0);
}

.faq-list details > div {
  padding: 0 52px 24px 2px;
}

.faq-list p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.95;
}

.final-cta {
  padding: 77px 0;
  color: #fff;
  background:
    radial-gradient(circle at 84% 18%, rgba(231, 125, 97, 0.14), transparent 33%),
    var(--bg);
}

.final-cta__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 55px;
}

.final-cta__inner > div > span {
  color: var(--coral-soft);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.final-cta h2 {
  max-width: 760px;
  margin: 10px 0 0;
  font-size: clamp(31px, 4.2vw, 49px);
  line-height: 1.17;
  letter-spacing: -0.04em;
}

.final-cta p {
  max-width: 670px;
  margin: 13px 0 0;
  color: rgba(255, 255, 255, 0.57);
  font-size: 11px;
}

.final-cta__inner > a {
  min-width: 245px;
  min-height: 74px;
  padding: 13px 17px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  color: var(--bg);
  background: var(--coral-soft);
  border-radius: 18px;
  transition: transform 180ms ease, background 180ms ease;
}

.final-cta__inner > a:hover,
.final-cta__inner > a:focus-visible {
  background: #ffd7ca;
  transform: translateX(5px);
}

.final-cta__inner > a span,
.final-cta__inner > a strong {
  grid-column: 1;
}

.final-cta__inner > a span {
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.final-cta__inner > a strong {
  margin-top: 3px;
  font-size: 13px;
}

.final-cta__inner > a i {
  grid-column: 2;
  grid-row: 1 / 3;
  font-style: normal;
  font-size: 20px;
}

.site-footer {
  color: rgba(255, 255, 255, 0.62);
  background: #120f0e;
}

.footer-main {
  padding-top: 64px;
  padding-bottom: 50px;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr 0.7fr 1fr;
  gap: 46px;
}

.footer-brand img {
  width: 120px;
  height: 46px;
  object-fit: contain;
  object-position: left center;
  filter: brightness(1.12);
}

.footer-brand p {
  max-width: 330px;
  margin: 17px 0 0;
  font-size: 10px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-links strong {
  margin-bottom: 5px;
  color: #fff;
  font-size: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 9px;
}

.footer-links a:hover {
  color: var(--coral-soft);
}

.footer-action {
  padding: 18px;
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 17px;
}

.footer-action span {
  color: var(--coral-soft);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.11em;
}

.footer-action strong {
  margin-top: 6px;
  color: #fff;
  font-size: 11px;
}

.footer-action a {
  margin-top: 12px;
  color: var(--cream);
  font-size: 9px;
  font-weight: 900;
}

.footer-bottom {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom p {
  margin: 0;
  font-size: 8px;
}

.mobile-download {
  position: fixed;
  right: 12px;
  bottom: 12px;
  left: 12px;
  z-index: 1001;
  min-height: 64px;
  padding: 9px 9px 9px 16px;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  color: #fff;
  background: rgba(18, 15, 14, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 17px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(15px);
}

.mobile-download > div {
  display: flex;
  flex-direction: column;
}

.mobile-download small {
  color: var(--coral-soft);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.mobile-download strong {
  margin-top: 3px;
  font-size: 11px;
}

.mobile-download a {
  min-width: 95px;
  padding: 11px 14px;
  color: var(--bg);
  background: var(--coral-soft);
  border-radius: 11px;
  text-align: center;
  font-size: 10px;
  font-weight: 900;
}

:focus-visible {
  outline: 3px solid rgba(231, 125, 97, 0.45);
  outline-offset: 3px;
}

@media (max-width: 1080px) {
  .site-nav {
    gap: 17px;
  }

  .hero-top {
    gap: 45px;
  }

  .prepare-layout,
  .route-layout {
    gap: 45px;
  }

  .footer-main {
    gap: 28px;
  }
}

@media (max-width: 920px) {
  :root {
    --header-height: 68px;
  }

  .section {
    padding: 84px 0;
  }

  .brand > span,
  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: grid;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    left: 0;
    margin: 0;
    padding: 31px 24px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 3px;
    visibility: hidden;
    background: rgba(29, 25, 23, 0.99);
    opacity: 0;
    transform: translateY(-15px);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }

  .site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 14px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .hero-inner {
    padding-top: 72px;
    padding-bottom: 90px;
  }

  .hero-top {
    grid-template-columns: 1fr;
    gap: 65px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .release-board {
    width: min(100%, 590px);
    margin-inline: auto;
  }

  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-metrics article:nth-child(2) {
    border-right: 0;
  }

  .hero-metrics article:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(29, 25, 23, 0.14);
  }

  .decision-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-heading--split,
  .prepare-layout,
  .route-layout,
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 43px;
  }

  .flow-track {
    grid-template-columns: repeat(2, 1fr);
  }

  .route-cards {
    max-width: 820px;
  }

  .problem-layout {
    grid-template-columns: 1fr;
  }

  .problem-tabs {
    grid-template-columns: repeat(2, 1fr);
  }

  .faq-copy {
    position: static;
  }

  .final-cta__inner {
    grid-template-columns: 1fr;
    gap: 31px;
  }

  .footer-main {
    grid-template-columns: 1.2fr 1fr 1fr;
  }

  .footer-action {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .section {
    padding: 70px 0;
  }

  .brand img {
    width: 96px;
    height: 38px;
  }

  .hero-inner {
    min-height: auto;
    padding-top: 58px;
    padding-bottom: 88px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero h1 span {
    font-size: 23px;
  }

  .hero-lead {
    font-size: 13px;
  }

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

  .primary-cta {
    width: 100%;
  }

  .secondary-cta {
    align-self: flex-start;
  }

  .release-board {
    transform: none;
  }

  .release-board__body {
    grid-template-columns: 1fr;
  }

  .release-ring {
    margin-inline: auto;
  }

  .hero-metrics,
  .decision-grid,
  .flow-track,
  .route-cards,
  .problem-tabs,
  .problem-links {
    grid-template-columns: 1fr;
  }

  .hero-metrics article {
    border-right: 0;
    border-bottom: 1px solid rgba(29, 25, 23, 0.14);
  }

  .hero-metrics article:last-child {
    border-bottom: 0;
  }

  .section-heading h2,
  .prepare-copy h2,
  .route-copy h2,
  .faq-copy h2 {
    font-size: 34px;
  }

  .section-heading--split {
    gap: 18px;
  }

  .decision-result {
    grid-template-columns: 1fr;
  }

  .decision-result a {
    justify-self: start;
  }

  .prepare-list label {
    grid-template-columns: auto 1fr;
  }

  .prepare-mark {
    grid-column: 2;
    justify-self: end;
    margin-top: -38px;
  }

  .problem-panels {
    min-height: 0;
    padding: 28px 21px;
  }

  .problem-panels h3 {
    font-size: 25px;
  }

  .faq-list details > div {
    padding-right: 3px;
  }

  .final-cta {
    padding-bottom: 98px;
  }

  .final-cta__inner > a {
    width: 100%;
  }

  .footer-main {
    padding-bottom: 95px;
    grid-template-columns: 1fr 1fr;
  }

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

  .footer-bottom {
    padding: 18px 0 95px;
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
  }

  .mobile-download {
    display: flex;
  }
}

@media (max-width: 390px) {
  .hero h1 {
    font-size: 37px;
  }

  .hero h1 span {
    font-size: 20px;
  }

  .release-board__footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }

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

  .footer-brand,
  .footer-action {
    grid-column: auto;
  }
}

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

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


/* QQPK_SAFE_01_33_START */

/*
   QQPK 01-33 图片基础安全补丁
*/

html,
body {
    max-width: 100%;
    overflow-x: hidden;
}

main {
    max-width: 100%;
    overflow-x: clip;
}

main figure,
main picture {
    max-width: 100%;
}

main img {
    max-width: 100%;
}

/*
   客户端截图和安装步骤图优先完整显示。
*/

main figure img,
main [class*="stage"] img,
main [class*="screen"] img,
main [class*="preview"] img,
main [class*="visual"] img,
main [class*="gallery"] img,
main [class*="step"] img {
    object-fit: contain;
}

/* QQPK_SAFE_01_33_END */

.final-cta--version {
  background:
    radial-gradient(circle at 84% 18%, rgba(231, 125, 97, 0.14), transparent 33%),
    var(--bg);
}

@media (max-width: 920px) {
  .final-cta--version .final-cta__inner {
    grid-template-columns: 1fr;
    gap: 31px;
  }
}

.site-footer--version {
  background: #120f0e;
}

.footer-version {
  padding-top: 52px;
  padding-bottom: 26px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 42px;
  align-items: start;
}

.footer-version__brand {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.footer-version__brand img {
  width: 118px;
  height: 46px;
  object-fit: contain;
  object-position: left center;
  filter: brightness(1.12);
}

.footer-version__brand strong {
  display: block;
  color: #fff;
  font-size: 14px;
}

.footer-version__brand p {
  max-width: 360px;
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.8;
}

.footer-version__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.footer-version__grid div {
  min-height: 132px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
}

.footer-version__grid span {
  color: var(--coral-soft);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.11em;
}

.footer-version__grid strong {
  display: block;
  margin-top: 10px;
  color: #fff;
  font-size: 13px;
  line-height: 1.45;
}

.footer-version__grid small {
  display: block;
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 10px;
  line-height: 1.7;
}

.footer-version__bottom {
  padding-top: 18px;
  padding-bottom: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-version__bottom p {
  margin: 0;
  font-size: 8px;
}

.footer-version__bottom a {
  color: var(--cream);
  font-size: 10px;
  font-weight: 900;
}

@media (max-width: 920px) {
  .footer-version {
    grid-template-columns: 1fr;
    gap: 26px;
  }

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

@media (max-width: 640px) {
  .footer-version {
    padding-top: 40px;
    padding-bottom: 18px;
  }

  .footer-version__brand {
    flex-direction: column;
  }

  .footer-version__grid div {
    min-height: auto;
    gap: 10px;
  }

  .footer-version__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}