:root {
  --page-bg: #f5f3ee;
  --surface: #ffffff;
  --surface-soft: #ece9e1;
  --ink: #10172a;
  --ink-soft: #596173;
  --navy: #101b33;
  --navy-light: #172747;
  --gold: #d5aa5a;
  --gold-light: #f1d69b;
  --line: rgba(16, 27, 51, 0.13);
  --success: #138764;
  --danger: #ca6549;
  --container: 1180px;
  --header-height: 76px;
  --radius-lg: 30px;
  --radius-md: 20px;
  --shadow-lg: 0 30px 80px rgba(16, 27, 51, 0.14);
  --shadow-md: 0 18px 50px rgba(16, 27, 51, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--page-bg);
  font-family:
    Arial,
    "Microsoft YaHei",
    "PingFang SC",
    sans-serif;
  line-height: 1.7;
  -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: 12px 18px;
  color: #fff;
  background: #000;
  border-radius: 8px;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

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

.top-notice {
  color: rgba(255, 255, 255, 0.76);
  background: #091326;
  font-size: 12px;
}

.top-notice__inner {
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.top-notice__inner span:first-child {
  color: var(--gold-light);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.93);
  border-bottom: 1px solid rgba(16, 27, 51, 0.08);
  backdrop-filter: blur(16px);
  transition:
    box-shadow 180ms ease,
    background 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 12px 35px rgba(16, 27, 51, 0.08);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.brand {
  min-width: 250px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand__logo-wrap {
  width: 105px;
  height: 42px;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.brand__logo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand__text {
  padding-left: 14px;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--line);
  line-height: 1.15;
}

.brand__text strong {
  font-size: 14px;
  letter-spacing: 0.02em;
}

.brand__text small {
  margin-top: 5px;
  color: var(--ink-soft);
  font-size: 11px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav > a {
  position: relative;
  color: #384056;
  font-size: 14px;
  font-weight: 700;
}

.site-nav > a:not(.nav-download)::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.site-nav > a:not(.nav-download):hover::after,
.site-nav > a:not(.nav-download):focus-visible::after {
  transform: scaleX(1);
}

.site-nav .nav-download {
  padding: 11px 20px;
  color: #fff;
  background: var(--navy);
  border-radius: 999px;
  transition:
    transform 180ms ease,
    background 180ms ease;
}

.site-nav .nav-download:hover,
.site-nav .nav-download:focus-visible {
  background: #1c3158;
  transform: translateY(-2px);
}

.nav-toggle {
  width: 46px;
  height: 42px;
  padding: 0;
  display: none;
  place-content: center;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
}

.nav-toggle span {
  width: 21px;
  height: 2px;
  display: block;
  background: var(--navy);
  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;
  min-height: 720px;
  overflow: hidden;
  color: #fff;
  background:
    linear-gradient(120deg, rgba(16, 27, 51, 0.98), rgba(13, 26, 49, 0.93)),
    #101b33;
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.23;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(to right, #000, transparent 90%);
}

.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(4px);
  pointer-events: none;
}

.hero__glow--one {
  top: -200px;
  right: -180px;
  width: 560px;
  height: 560px;
  opacity: 0.15;
  background: var(--gold);
}

.hero__glow--two {
  bottom: -300px;
  left: 30%;
  width: 500px;
  height: 500px;
  opacity: 0.08;
  background: #6eb8ff;
}

.hero__inner {
  position: relative;
  z-index: 1;
  min-height: 720px;
  padding-top: 86px;
  padding-bottom: 82px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.9fr);
  align-items: center;
  gap: 90px;
}

.hero__eyebrow {
  margin-bottom: 22px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--gold-light);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.hero__eyebrow-dot {
  width: 8px;
  height: 8px;
  display: inline-block;
  background: var(--gold);
  border-radius: 50%;
  box-shadow: 0 0 0 7px rgba(213, 170, 90, 0.12);
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(46px, 5.4vw, 78px);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.hero h1 span {
  margin-top: 15px;
  display: block;
  color: var(--gold-light);
  font-size: clamp(25px, 3vw, 43px);
  font-weight: 600;
  letter-spacing: -0.025em;
}

.hero__lead {
  max-width: 670px;
  margin: 27px 0 0;
  color: rgba(255, 255, 255, 0.75);
  font-size: 17px;
  line-height: 1.9;
}

.hero__actions {
  margin-top: 35px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 13px;
}

.button {
  min-height: 52px;
  padding: 13px 23px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.button svg {
  width: 19px;
  height: 19px;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-3px);
}

.button--primary {
  min-width: 220px;
  color: #172039;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  box-shadow: 0 15px 35px rgba(213, 170, 90, 0.2);
}

.button--primary:hover,
.button--primary:focus-visible {
  box-shadow: 0 19px 42px rgba(213, 170, 90, 0.32);
}

.button--secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.2);
}

.button--secondary:hover,
.button--secondary:focus-visible {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.34);
}

.button--dark {
  color: #fff;
  background: var(--navy);
}

.button--light {
  color: var(--navy);
  background: #fff;
}

.device-detection {
  margin-top: 25px;
  display: flex;
  align-items: center;
  gap: 11px;
  color: rgba(255, 255, 255, 0.63);
  font-size: 13px;
}

.device-detection strong {
  color: #fff;
}

.device-detection__icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--gold-light);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}

.device-detection__icon svg {
  width: 17px;
  height: 17px;
}

.hero__checks {
  margin: 28px 0 0;
  padding: 25px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.11);
}

.hero__checks li {
  position: relative;
  padding-left: 21px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 12px;
}

.hero__checks li::before {
  position: absolute;
  top: 0.68em;
  left: 0;
  width: 8px;
  height: 5px;
  content: "";
  border-bottom: 2px solid var(--gold);
  border-left: 2px solid var(--gold);
  transform: rotate(-45deg) translateY(-50%);
}

.hero__visual {
  position: relative;
}

.visual-card {
  position: relative;
  z-index: 2;
  padding: 18px;
  overflow: hidden;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-lg);
  box-shadow: 0 40px 110px rgba(0, 0, 0, 0.27);
  transform: rotate(1.5deg);
}

.visual-card::before {
  position: absolute;
  top: -80px;
  right: -80px;
  width: 230px;
  height: 230px;
  content: "";
  background: rgba(213, 170, 90, 0.2);
  border-radius: 50%;
  filter: blur(15px);
}

.visual-card__top {
  position: relative;
  z-index: 1;
  padding: 4px 4px 16px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: #697084;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.visual-card__status {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--success);
}

.visual-card__status i {
  width: 7px;
  height: 7px;
  display: inline-block;
  background: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(19, 135, 100, 0.11);
}

.visual-card__image {
  position: relative;
  min-height: 315px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    linear-gradient(150deg, #f4f2ec, #fff),
    #fff;
  border: 1px solid rgba(16, 27, 51, 0.08);
  border-radius: 21px;
}

.visual-card__image::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.32;
  background-image: radial-gradient(
    circle at center,
    rgba(16, 27, 51, 0.13) 1px,
    transparent 1px
  );
  background-size: 17px 17px;
}

.visual-card__image img {
  position: relative;
  z-index: 1;
  width: 94%;
  max-height: 330px;
  object-fit: contain;
}

.visual-card__bottom {
  padding: 17px 4px 3px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
}

.visual-card__bottom > div {
  display: flex;
  flex-direction: column;
  line-height: 1.4;
}

.visual-card__bottom span {
  color: var(--ink-soft);
  font-size: 11px;
}

.visual-card__bottom strong {
  margin-top: 3px;
  font-size: 14px;
}

.visual-card__bottom a {
  color: var(--navy);
  font-size: 12px;
  font-weight: 800;
  border-bottom: 1px solid var(--gold);
}

.floating-note {
  position: absolute;
  z-index: 4;
  min-width: 190px;
  padding: 14px 17px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 16px;
  box-shadow: 0 20px 55px rgba(0, 0, 0, 0.19);
}

.floating-note > span {
  width: 35px;
  height: 35px;
  display: grid;
  place-items: center;
  color: var(--navy);
  background: var(--gold-light);
  border-radius: 11px;
  font-size: 11px;
  font-weight: 900;
}

.floating-note > div {
  display: flex;
  flex-direction: column;
  line-height: 1.35;
}

.floating-note strong {
  font-size: 12px;
}

.floating-note small {
  margin-top: 3px;
  color: var(--ink-soft);
  font-size: 10px;
}

.floating-note--top {
  top: -33px;
  right: -47px;
}

.floating-note--bottom {
  bottom: -38px;
  left: -54px;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 45px;
}

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

.section-kicker {
  display: inline-block;
  margin-bottom: 13px;
  color: #a17a30;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.18em;
}

.section-heading h2,
.check-intro h2,
.support-main h2,
.faq-intro h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 51px);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.section-heading p,
.check-intro > p,
.support-main > p,
.faq-intro > p {
  margin: 17px 0 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.9;
}

.device-section {
  position: relative;
  background: var(--page-bg);
}

.device-section::before {
  position: absolute;
  top: 0;
  right: 0;
  width: 38%;
  height: 100%;
  content: "";
  opacity: 0.45;
  background:
    linear-gradient(to left, rgba(213, 170, 90, 0.09), transparent);
  pointer-events: none;
}

.device-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 21px;
}

.device-card {
  position: relative;
  min-height: 470px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 38px rgba(16, 27, 51, 0.04);
  transition:
    transform 200ms ease,
    box-shadow 200ms ease,
    border-color 200ms ease;
}

.device-card:hover,
.device-card.is-detected {
  border-color: rgba(213, 170, 90, 0.7);
  box-shadow: var(--shadow-md);
  transform: translateY(-7px);
}

.device-card.is-detected::before {
  position: absolute;
  top: 17px;
  right: 17px;
  padding: 5px 9px;
  content: "当前设备";
  color: var(--navy);
  background: var(--gold-light);
  border-radius: 999px;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.device-card__number {
  position: absolute;
  top: 19px;
  right: 22px;
  color: rgba(16, 27, 51, 0.09);
  font-size: 46px;
  font-weight: 900;
  line-height: 1;
}

.device-card__icon {
  width: 65px;
  height: 65px;
  display: grid;
  place-items: center;
  color: var(--navy);
  background: var(--surface-soft);
  border-radius: 20px;
}

.device-card__icon svg {
  width: 37px;
  height: 37px;
}

.device-card__content {
  margin-top: 25px;
}

.device-card__label {
  color: #a17a30;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.device-card h3 {
  margin: 7px 0 0;
  font-size: 24px;
}

.device-card__content p {
  margin: 12px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.8;
}

.device-card__list {
  margin: 23px 0 26px;
  padding: 20px 0 0;
  display: grid;
  gap: 10px;
  list-style: none;
  border-top: 1px solid var(--line);
}

.device-card__list li {
  position: relative;
  padding-left: 20px;
  color: #4c5366;
  font-size: 12px;
}

.device-card__list li::before {
  position: absolute;
  top: 0.65em;
  left: 0;
  width: 8px;
  height: 8px;
  content: "";
  background: var(--gold);
  border-radius: 50%;
  transform: translateY(-50%);
}

.device-card__button {
  min-height: 48px;
  margin-top: auto;
  padding: 12px 17px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #fff;
  background: var(--navy);
  border-radius: 13px;
  font-size: 13px;
  font-weight: 800;
  transition:
    background 180ms ease,
    transform 180ms ease;
}

.device-card__button span {
  font-size: 18px;
}

.device-card__button:hover,
.device-card__button:focus-visible {
  background: var(--navy-light);
  transform: translateY(-2px);
}

.device-help {
  margin-top: 22px;
  padding: 18px 22px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 17px;
}

.device-help__icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  color: var(--navy);
  background: var(--gold-light);
  border-radius: 50%;
  font-weight: 900;
}

.device-help strong {
  font-size: 13px;
}

.device-help p {
  margin: 2px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.device-help a {
  color: var(--navy);
  font-size: 12px;
  font-weight: 900;
  border-bottom: 1px solid var(--gold);
}

.check-section {
  color: #fff;
  background:
    linear-gradient(rgba(9, 19, 38, 0.96), rgba(9, 19, 38, 0.96)),
    var(--navy);
}

.check-layout {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  align-items: center;
  gap: 95px;
}

.check-intro > p {
  color: rgba(255, 255, 255, 0.63);
}

.check-score {
  margin-top: 38px;
  padding: 19px;
  display: flex;
  align-items: center;
  gap: 17px;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 19px;
}

.check-score__circle {
  width: 68px;
  height: 68px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  color: var(--navy);
  background: var(--gold-light);
  border-radius: 50%;
}

.check-score__circle strong {
  align-self: center;
  font-size: 25px;
  line-height: 1;
}

.check-score__circle span {
  align-self: center;
  margin-top: 7px;
  font-size: 11px;
}

.check-score > div:last-child {
  display: flex;
  flex-direction: column;
}

.check-score > div:last-child strong {
  font-size: 14px;
}

.check-score > div:last-child span {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px;
}

.check-list {
  display: grid;
  gap: 13px;
}

.check-item {
  position: relative;
  min-height: 88px;
  padding: 16px 70px 16px 18px;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 17px;
  cursor: pointer;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.check-item:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateX(5px);
}

.check-item:has(input:checked) {
  background: rgba(213, 170, 90, 0.11);
  border-color: rgba(213, 170, 90, 0.55);
}

.check-item input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.check-item__box {
  width: 29px;
  height: 29px;
  position: relative;
  display: inline-block;
  border: 1px solid rgba(255, 255, 255, 0.33);
  border-radius: 9px;
}

.check-item input:checked + .check-item__box {
  background: var(--gold);
  border-color: var(--gold);
}

.check-item input:checked + .check-item__box::after {
  position: absolute;
  top: 7px;
  left: 7px;
  width: 10px;
  height: 6px;
  content: "";
  border-bottom: 2px solid var(--navy);
  border-left: 2px solid var(--navy);
  transform: rotate(-45deg);
}

.check-item__content {
  display: flex;
  flex-direction: column;
}

.check-item__content strong {
  font-size: 13px;
}

.check-item__content small {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.51);
  font-size: 11px;
}

.check-item__index {
  position: absolute;
  right: 21px;
  color: rgba(255, 255, 255, 0.14);
  font-size: 24px;
  font-weight: 900;
}

.compare-section {
  background: #fff;
}

.compare-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 50px rgba(16, 27, 51, 0.05);
}

.compare-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: 22px 24px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.compare-table thead th {
  color: #fff;
  background: var(--navy);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.compare-table tbody th {
  font-size: 13px;
}

.compare-table tbody td {
  color: var(--ink-soft);
  font-size: 13px;
}

.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td {
  border-bottom: 0;
}

.compare-table tbody tr:hover {
  background: #faf8f3;
}

.table-device {
  width: 10px;
  height: 10px;
  margin-right: 9px;
  display: inline-block;
  border-radius: 50%;
}

.table-device--android {
  background: #2e9d71;
}

.table-device--ios {
  background: #727c93;
}

.table-device--desktop {
  background: #4a71d6;
}

.compare-note {
  margin-top: 21px;
  padding: 19px 22px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 25px;
  background: #f7f3e9;
  border-left: 4px solid var(--gold);
  border-radius: 4px 14px 14px 4px;
}

.compare-note strong {
  color: #8b6727;
  font-size: 12px;
}

.compare-note p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.steps-section {
  background: var(--page-bg);
}

.steps-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.step-card {
  position: relative;
  min-height: 310px;
  padding: 29px 25px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.step-card::after {
  position: absolute;
  right: -45px;
  bottom: -45px;
  width: 130px;
  height: 130px;
  content: "";
  background: rgba(213, 170, 90, 0.12);
  border-radius: 50%;
}

.step-card__number {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  color: var(--navy);
  background: var(--gold-light);
  border-radius: 15px;
  font-size: 12px;
  font-weight: 900;
}

.step-card__line {
  width: 1px;
  height: 48px;
  margin: 15px 0;
  background: linear-gradient(var(--gold), transparent);
}

.step-card__content {
  position: relative;
  z-index: 1;
}

.step-card__content > span {
  color: #a17a30;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.step-card h3 {
  margin: 8px 0 0;
  font-size: 19px;
}

.step-card p {
  margin: 11px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.85;
}

.support-section {
  background: #e8e4db;
}

.support-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  align-items: start;
  gap: 65px;
}

.support-grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 13px;
}

.support-grid article {
  padding: 22px;
  background: rgba(255, 255, 255, 0.64);
  border: 1px solid rgba(16, 27, 51, 0.09);
  border-radius: 17px;
}

.support-grid article > span {
  color: #a17a30;
  font-size: 10px;
  font-weight: 900;
}

.support-grid h3 {
  margin: 8px 0 0;
  font-size: 16px;
}

.support-grid p {
  margin: 7px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.support-panel {
  position: sticky;
  top: calc(var(--header-height) + 25px);
  padding: 22px;
  color: #fff;
  background: var(--navy);
  border-radius: 24px;
  box-shadow: var(--shadow-md);
}

.support-panel__top {
  padding: 6px 3px 20px;
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid rgba(255, 255, 255, 0.11);
}

.support-panel__top span {
  color: var(--gold-light);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.support-panel__top strong {
  margin-top: 7px;
  font-size: 19px;
}

.support-panel__routes {
  padding: 17px 0;
  display: grid;
  gap: 8px;
}

.support-panel__routes button {
  padding: 13px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #fff;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 12px;
  cursor: pointer;
  transition:
    background 180ms ease,
    transform 180ms ease;
}

.support-panel__routes button:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(4px);
}

.support-panel__routes span {
  color: rgba(255, 255, 255, 0.5);
  font-size: 10px;
}

.support-panel__routes strong {
  font-size: 12px;
}

.support-panel > a {
  min-height: 47px;
  padding: 12px 15px;
  display: grid;
  place-items: center;
  color: var(--navy);
  background: var(--gold-light);
  border-radius: 13px;
  font-size: 12px;
  font-weight: 900;
}

.faq-section {
  background: #fff;
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  align-items: start;
  gap: 90px;
}

.faq-intro {
  position: sticky;
  top: calc(var(--header-height) + 35px);
}

.faq-intro .button {
  margin-top: 28px;
}

.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 3px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  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(--navy);
  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(--gold-light);
  border-color: var(--gold-light);
}

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

.faq-answer {
  padding: 0 60px 24px 3px;
}

.faq-answer p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.9;
}

.final-cta {
  padding: 72px 0;
  color: #fff;
  background:
    linear-gradient(110deg, rgba(16, 27, 51, 0.98), rgba(28, 49, 88, 0.93)),
    var(--navy);
}

.final-cta__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 60px;
}

.final-cta__inner > div:first-child > span {
  color: var(--gold-light);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.final-cta h2 {
  max-width: 760px;
  margin: 10px 0 0;
  font-size: clamp(29px, 4vw, 47px);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.final-cta p {
  max-width: 690px;
  margin: 13px 0 0;
  color: rgba(255, 255, 255, 0.61);
  font-size: 13px;
}

.final-cta__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.final-cta__text-link {
  color: rgba(255, 255, 255, 0.7);
  font-size: 11px;
  font-weight: 700;
}

.final-cta__text-link span {
  margin-left: 5px;
}

.site-footer {
  color: rgba(255, 255, 255, 0.7);
  background: #080f1d;
}

.footer-main {
  padding-top: 68px;
  padding-bottom: 55px;
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 0.7fr 1fr;
  gap: 55px;
}

.footer-brand img {
  width: 125px;
  height: 48px;
  object-fit: contain;
  object-position: left center;
  filter: brightness(1.13);
}

.footer-brand p {
  max-width: 330px;
  margin: 18px 0 0;
  font-size: 12px;
}

.footer-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.footer-group > strong {
  margin-bottom: 5px;
  color: #fff;
  font-size: 12px;
}

.footer-group a {
  color: rgba(255, 255, 255, 0.58);
  font-size: 11px;
}

.footer-group a:hover {
  color: var(--gold-light);
}

.footer-group p {
  margin: 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px;
}

.footer-group--action > a {
  margin-top: 8px;
  padding: 10px 14px;
  color: var(--navy);
  background: var(--gold-light);
  border-radius: 10px;
  font-weight: 900;
}

.footer-bottom {
  min-height: 65px;
  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: 10px;
}

.mobile-download-bar {
  position: fixed;
  right: 12px;
  bottom: 12px;
  left: 12px;
  z-index: 1001;
  min-height: 65px;
  padding: 10px 10px 10px 17px;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  color: #fff;
  background: rgba(9, 19, 38, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 17px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(15px);
}

.mobile-download-bar > div {
  min-width: 0;
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.mobile-download-bar small {
  overflow: hidden;
  color: rgba(255, 255, 255, 0.55);
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mobile-download-bar strong {
  margin-top: 4px;
  overflow: hidden;
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mobile-download-bar > a {
  min-width: 95px;
  padding: 11px 15px;
  color: var(--navy);
  background: var(--gold-light);
  border-radius: 11px;
  text-align: center;
  font-size: 11px;
  font-weight: 900;
}

:focus-visible {
  outline: 3px solid rgba(213, 170, 90, 0.55);
  outline-offset: 3px;
}

@media (max-width: 1080px) {
  .site-nav {
    gap: 18px;
  }

  .hero__inner {
    grid-template-columns: 1fr 430px;
    gap: 50px;
  }

  .floating-note--top {
    right: -18px;
  }

  .floating-note--bottom {
    left: -18px;
  }

  .device-grid {
    gap: 14px;
  }

  .device-card {
    padding: 23px;
  }

  .check-layout {
    gap: 55px;
  }

  .support-layout {
    gap: 40px;
  }

  .footer-main {
    gap: 35px;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 68px;
  }

  .section {
    padding: 82px 0;
  }

  .top-notice__inner {
    justify-content: center;
    text-align: center;
  }

  .top-notice__inner span:first-child {
    display: none;
  }

  .brand {
    min-width: 0;
  }

  .brand__text {
    display: none;
  }

  .nav-toggle {
    display: grid;
  }

  .site-nav {
    position: fixed;
    top: calc(36px + var(--header-height));
    right: 0;
    bottom: 0;
    left: 0;
    padding: 35px 25px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    visibility: hidden;
    background: rgba(255, 255, 255, 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: 15px 6px;
    border-bottom: 1px solid var(--line);
  }

  .site-nav .nav-download {
    margin-top: 15px;
    padding: 15px 20px;
    text-align: center;
    border-bottom: 0;
  }

  .hero__inner {
    padding-top: 75px;
    padding-bottom: 105px;
    grid-template-columns: 1fr;
    gap: 75px;
  }

  .hero__content {
    max-width: 730px;
  }

  .hero__visual {
    width: min(100%, 560px);
    margin-inline: auto;
  }

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

  .device-card {
    min-height: 0;
  }

  .check-layout,
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 45px;
  }

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

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

  .support-panel,
  .faq-intro {
    position: static;
  }

  .final-cta__inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .final-cta__actions {
    align-items: flex-start;
  }

  .footer-main {
    grid-template-columns: 1.3fr 1fr 1fr;
  }

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

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

  .section {
    padding: 70px 0;
  }

  .site-header {
    top: 0;
  }

  .top-notice {
    display: none;
  }

  .site-nav {
    top: var(--header-height);
  }

  .brand__logo-wrap {
    width: 94px;
    height: 38px;
  }

  .hero {
    min-height: auto;
  }

  .hero__inner {
    min-height: auto;
    padding-top: 62px;
    padding-bottom: 95px;
  }

  .hero h1 {
    font-size: 45px;
  }

  .hero h1 span {
    font-size: 25px;
    line-height: 1.25;
  }

  .hero__lead {
    font-size: 14px;
  }

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

  .button {
    width: 100%;
  }

  .hero__checks {
    display: grid;
    gap: 9px;
  }

  .visual-card {
    padding: 12px;
    border-radius: 22px;
    transform: none;
  }

  .visual-card__image {
    min-height: 245px;
  }

  .visual-card__bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .floating-note {
    min-width: 0;
  }

  .floating-note--top {
    top: -36px;
    right: 5px;
  }

  .floating-note--bottom {
    bottom: -43px;
    left: 5px;
  }

  .section-heading h2,
  .check-intro h2,
  .support-main h2,
  .faq-intro h2 {
    font-size: 34px;
  }

  .device-card {
    padding: 22px;
  }

  .device-help {
    grid-template-columns: auto 1fr;
  }

  .device-help a {
    grid-column: 1 / -1;
    padding-top: 12px;
    border-top: 1px solid var(--line);
    border-bottom: 0;
  }

  .check-score {
    align-items: flex-start;
  }

  .check-item {
    padding-right: 20px;
  }

  .check-item__index {
    display: none;
  }

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

  .steps-track {
    grid-template-columns: 1fr;
  }

  .step-card {
    min-height: 0;
  }

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

  .faq-list summary {
    font-size: 14px;
  }

  .faq-answer {
    padding-right: 5px;
  }

  .final-cta {
    padding: 62px 0 90px;
  }

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

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

  .footer-bottom {
    padding: 20px 0 95px;
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .mobile-download-bar {
    display: flex;
  }
}

@media (max-width: 390px) {
  .hero h1 {
    font-size: 39px;
  }

  .hero h1 span {
    font-size: 22px;
  }

  .floating-note {
    padding: 11px;
  }

  .floating-note > span {
    width: 30px;
    height: 30px;
  }

  .floating-note small {
    display: none;
  }

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

  .footer-brand,
  .footer-group--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 */