:root {
  --blue: #1769ff;
  --ink: #172945;
  --muted: #74839a;
  --line: #e1e8f2;
  --bg: #f6f8ff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(0, 88, 188, 0.12), transparent 320px),
    linear-gradient(180deg, rgba(22, 119, 255, 0.06), transparent 260px),
    #f4f7fb;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

img {
  max-width: 100%;
}

button,
.btn {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 28px;
  height: 64px;
  padding: 0 28px;
  border-bottom: 1px solid #e6edf5;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
}

.brand {
  display: inline-flex;
  flex: none;
  align-items: center;
  gap: 10px;
  color: #111827;
  font-size: 18px;
  font-weight: 700;
  white-space: nowrap;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(0, 88, 188, 0.16);
}

.nav {
  display: flex;
  flex: 1;
  min-width: 0;
  align-items: center;
  gap: 4px;
}

.nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 64px;
  padding: 0 14px;
  color: #334155;
  font-size: 14px;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}

.nav a.is-active {
  color: var(--blue);
  font-weight: 600;
  border-bottom-color: var(--blue);
}

.nav a:hover {
  color: var(--blue);
}

.nav-short {
  display: none;
}

.nav svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.purchase-btn {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 38px;
  padding: 0 16px;
  border: 0;
  border-radius: 10px;
  color: #fff;
  background: var(--blue);
  font-weight: 700;
  box-shadow: 0 9px 22px rgba(0, 88, 188, 0.2);
}

.purchase-btn svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

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

.kicker {
  display: inline-block;
  margin-bottom: 7px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.home-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  gap: 30px;
  min-height: 650px;
  overflow: hidden;
  padding: 78px max(24px, calc((100vw - 1180px) / 2));
  color: #fff;
  background: linear-gradient(128deg, #0b4dcc 0%, #1769ff 48%, #6748f5 100%);
}

.home-hero__grid,
.home-hero__flow {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.home-hero__grid {
  opacity: 0.52;
  background-image: radial-gradient(rgba(255, 255, 255, 0.23) 1px, transparent 1px);
  background-size: 22px 22px;
}

.home-hero__flow {
  background:
    radial-gradient(circle at 12% 18%, rgba(255, 255, 255, 0.16), transparent 24rem),
    radial-gradient(circle at 72% 15%, rgba(255, 228, 160, 0.12), transparent 21rem);
}

.home-hero__content {
  position: relative;
  z-index: 2;
  justify-self: end;
  width: min(100%, 660px);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 15px;
  font-weight: 700;
}

.home-hero h1 {
  margin: 24px 0 0;
  color: #fff;
  font-size: 54px;
  line-height: 1.2;
}

.home-hero h1 span {
  display: inline-block;
  margin-top: 8px;
  color: #ffe4a0;
}

.hero-lead {
  max-width: 560px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 17px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 10px;
  font-weight: 700;
  cursor: pointer;
}

.btn svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.btn-light {
  border: 1px solid #fff;
  color: var(--blue);
  background: #fff;
  box-shadow: 0 16px 34px rgba(8, 30, 88, 0.25);
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.48);
  color: #fff;
  background: rgba(255, 255, 255, 0.11);
}

.btn-primary {
  border: 0;
  color: #fff;
  background: var(--blue);
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 12px;
}

.hero-showcase {
  position: relative;
  z-index: 2;
  align-self: center;
  min-height: 490px;
}

.hero-showcase::before {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 390px;
  height: 390px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.11);
  content: "";
  transform: translate(-50%, -50%);
}

.hero-phone {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 245px;
  height: 450px;
  overflow: hidden;
  border: 9px solid rgba(255, 255, 255, 0.96);
  border-radius: 32px;
  background: #fff;
  box-shadow: 0 34px 78px rgba(7, 24, 76, 0.42);
  transform: translateX(-52%) rotate(3deg);
}

.hero-phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-float {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 13px 16px;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.93);
  color: #526783;
  font-size: 12px;
}

.hero-float strong {
  color: var(--blue);
  font-size: 28px;
}

.hero-float--one {
  top: 74px;
  left: 0;
}

.hero-float--two {
  right: 0;
  bottom: 92px;
}

.section {
  padding: 72px max(24px, calc((100vw - 1180px) / 2));
}

.download-section {
  background:
    radial-gradient(circle at 88% 12%, rgba(23, 105, 255, 0.08), transparent 26%),
    linear-gradient(180deg, #f8faff 0%, #fff 100%);
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 28px;
}

.section-head h2,
.page-title h1,
.cta h2 {
  margin: 4px 0 8px;
  font-size: 32px;
  line-height: 1.25;
}

.section-head p,
.page-title p {
  margin: 0;
  color: var(--muted);
}

.status-dot {
  color: #63738b;
  font-size: 11px;
}

.status-dot i {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 6px;
  border-radius: 50%;
  background: #18a875;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.dl-card {
  min-height: 255px;
  padding: 22px;
  border: 1px solid #e2e8f1;
  border-radius: 20px;
  background: linear-gradient(150deg, #fff, #f8faff);
}

.dl-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dl-icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 15px;
  color: #fff;
}

.dl-icon svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.dl-card__top span {
  padding: 5px 8px;
  border-radius: 999px;
  color: #15835f;
  background: #e8f8f1;
  font-size: 11px;
}

.dl-card h3 {
  margin: 17px 0 6px;
  font-size: 18px;
}

.dl-card > p {
  min-height: 38px;
  margin: 0;
  color: #7b899d;
  font-size: 13px;
}

.arch {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.arch span {
  padding: 5px 7px;
  border-radius: 7px;
  color: #66758d;
  background: #f0f3f8;
  font-size: 11px;
}

.dl-card__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 21px;
  padding-top: 15px;
  border-top: 1px solid #e8edf4;
}

.dl-card__footer small {
  color: #8b97a9;
  font-size: 12px;
}

.dl-card .btn {
  min-height: 34px;
  padding: 0 12px;
  font-size: 13px;
}

.promo-section {
  color: #fff;
  background: linear-gradient(145deg, #0e315f, #1457ae 56%, #6248d8);
}

.promo-section .kicker {
  color: #ffe4a2;
}

.promo-section .section-head h2,
.promo-section .section-head p {
  color: #fff;
}

.promo-section .section-head p {
  opacity: 0.72;
}

.promo-gallery {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.promo-gallery figure {
  margin: 0;
}

.promo-gallery__image {
  aspect-ratio: 9 / 14;
  overflow: hidden;
  border: 5px solid rgba(255, 255, 255, 0.82);
  border-radius: 20px;
  background: #fff;
}

.promo-gallery__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.promo-gallery figcaption {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 12px;
}

.promo-gallery figcaption span {
  color: #ffe4a2;
  font-size: 10px;
}

.faq-section {
  background: #fff;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 860px;
}

.faq-list details {
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--ink);
}

.faq-list p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 42px;
  align-items: center;
  max-width: 1160px;
  margin: 0 auto 80px;
  padding: 54px;
  border-radius: 28px;
  color: #fff;
  background: linear-gradient(125deg, #0d4ec6, #1769ff 55%, #6549e8);
}

.cta .kicker {
  color: #ffe5a5;
}

.cta h2 {
  color: #fff;
}

.cta p {
  max-width: 650px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
}

.exam-links {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 24px;
}

.exam-links a {
  display: inline-flex;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.09);
  font-size: 13px;
}

.cta-card {
  padding: 27px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 22px;
  color: #172944;
  background: rgba(255, 255, 255, 0.93);
  transform: rotate(2deg);
}

.cta-card > span {
  color: #9b6b16;
  font-size: 11px;
  font-weight: 800;
}

.cta-card strong {
  display: block;
  margin-top: 8px;
  font-size: 28px;
}

.cta-card p {
  color: #748299;
}

.page-title {
  padding: 72px 24px 12px;
  text-align: center;
}

.page-title h1 {
  font-size: 42px;
}

.about-story {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 16px;
  width: min(calc(100% - 48px), 1100px);
  margin: 42px auto 0;
}

.about-story article {
  padding: 36px;
  border-radius: 24px;
}

.about-story__main {
  border: 1px solid var(--line);
  background: #fff;
}

.about-story__mission {
  color: #fff;
  background: linear-gradient(145deg, #0d4ec6, #6748f5);
}

.about-story h2 {
  margin: 8px 0 14px;
  font-size: 32px;
}

.about-story p {
  color: var(--muted);
  line-height: 1.8;
}

.about-story__mission p {
  color: rgba(255, 255, 255, 0.82);
}

.about-story__mission .kicker,
.about-story__mission span:first-child {
  color: #ffe4a0;
  font-size: 12px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tags span {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 12px;
}

.values {
  width: min(calc(100% - 48px), 1100px);
  margin: 42px auto 80px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.values-grid article {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
}

.values-grid h3 {
  margin: 10px 0;
}

.values-grid p {
  margin: 0;
  color: var(--muted);
}

.num {
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
}

.articles-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: min(calc(100% - 48px), 860px);
  margin: 42px auto 24px;
}

.article-card {
  display: block;
  padding: 28px 32px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 20px 58px rgba(34, 64, 105, 0.08);
}

.article-card h2 {
  margin: 0 0 10px;
  font-size: 24px;
}

.article-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.article-card__meta {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.badge {
  padding: 4px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}

.badge-site {
  color: var(--blue);
  background: #f2f6ff;
  border: 1px solid #dbe6fa;
}

.badge-wechat {
  color: #07c160;
  background: #f1fbf5;
  border: 1px solid #cdeedc;
}

.article-card__action {
  display: inline-block;
  margin-top: 18px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

.article-page {
  width: min(calc(100% - 48px), 800px);
  margin: 0 auto;
  padding: 36px 0 80px;
}

.article-page__crumb,
.article-page__meta,
.article-page__back {
  color: #8a97ab;
  font-size: 13px;
}

.article-page__crumb a,
.article-page__back a {
  color: var(--blue);
}

.article-page > h1 {
  margin: 12px 0 8px;
  font-size: 34px;
  line-height: 1.3;
}

.article-body {
  margin-top: 28px;
  color: #20324f;
  font-size: 16px;
  line-height: 1.9;
}

.article-body img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 18px auto;
  border-radius: 12px;
}

.article-body table {
  width: 100%;
  margin: 16px 0 28px;
  border-collapse: collapse;
  font-size: 14px;
}

.article-body th,
.article-body td {
  padding: 10px 12px;
  border-bottom: 1px solid #eef1f6;
  text-align: left;
}

.article-body h2 {
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 3px solid #1a6db5;
  font-size: 22px;
}

.article-page__back {
  margin-top: 36px;
}

.footnote {
  width: min(calc(100% - 48px), 860px);
  margin: 0 auto 80px;
  color: #8a97ab;
  font-size: 13px;
  text-align: center;
}

.site-footer {
  padding: 18px 24px 28px;
  color: #8a97ab;
  font-size: 13px;
  text-align: center;
  background: #fff;
}

.site-footer a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.site-footer img {
  width: 16px;
  height: 16px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgba(15, 23, 42, 0.45);
}

.modal.is-open {
  display: grid;
}

.modal[hidden] {
  display: none !important;
}

.modal__panel {
  width: min(100%, 520px);
  padding: 28px;
  border-radius: 18px;
  background: #fff;
  text-align: center;
}

.modal__panel img {
  display: block;
  width: min(100%, 440px);
  margin: 0 auto 16px;
}

.modal__close {
  margin-top: 8px;
  border: 0;
  background: none;
  color: var(--blue);
  cursor: pointer;
}

@media (max-width: 980px) {
  .home-hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .home-hero h1 {
    font-size: 40px;
  }

  .hero-showcase {
    min-height: 430px;
  }

  .download-grid,
  .promo-gallery,
  .values-grid,
  .about-story,
  .cta {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .site-header {
    gap: 12px;
    padding: 0 14px;
  }

  .brand span {
    display: none;
  }
}

.skip {
  position: absolute;
  left: 16px;
  top: -40px;
  z-index: 40;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
}

.skip:focus {
  top: 8px;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 28px;
  height: 64px;
  padding: 0 28px;
  border-bottom: 1px solid #e6edf5;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
}

.home-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 15px;
  font-weight: 700;
}

.home-hero__lead {
  max-width: 560px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 17px;
  line-height: 1.8;
}

.home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.home-hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 12px;
}

.home-hero-showcase {
  position: relative;
  z-index: 2;
  align-self: center;
  min-height: 490px;
}

.home-hero-showcase__phone {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 245px;
  height: 450px;
  overflow: hidden;
  border: 9px solid rgba(255, 255, 255, 0.96);
  border-radius: 32px;
  background: #fff;
  box-shadow: 0 34px 78px rgba(7, 24, 76, 0.42);
  transform: translateX(-52%) rotate(3deg);
}

.home-hero-showcase__phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.home-hero__underline {
  width: 88px;
  height: 6px;
  margin-top: 16px;
  border-radius: 99px;
  background: #ffe4a0;
}

.section-kicker {
  display: inline-block;
  margin-bottom: 7px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.section-heading h2 {
  margin: 4px 0 8px;
  font-size: 32px;
}

.section-heading p {
  margin: 0;
  color: var(--muted);
}

.platform-card {
  min-height: 255px;
  padding: 22px;
  border: 1px solid #e2e8f1;
  border-radius: 20px;
  background: linear-gradient(150deg, #fff, #f8faff);
}

.platform-card h3 {
  margin: 17px 0 6px;
  font-size: 18px;
}

.platform-card p {
  min-height: 38px;
  margin: 0;
  color: #7b899d;
  font-size: 13px;
}

.platform-card__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 21px;
  padding-top: 15px;
  border-top: 1px solid #e8edf4;
}

.platform-card__footer small {
  color: #8b97a9;
  font-size: 12px;
}

.faq-item {
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}

.faq-item dt {
  font-weight: 700;
  color: var(--ink);
}

.faq-item dd {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.purchase-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 42px;
  align-items: center;
  max-width: 1160px;
  margin: 0 auto 80px;
  padding: 54px;
  border-radius: 28px;
  color: #fff;
  background: linear-gradient(125deg, #0d4ec6, #1769ff 55%, #6549e8);
}

.purchase-cta h2,
.purchase-cta .section-kicker {
  color: #ffe5a5;
}

.purchase-cta h2 {
  color: #fff;
}

.purchase-cta > div > p {
  max-width: 650px;
  color: rgba(255, 255, 255, 0.75);
}

.story-card {
  padding: 36px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: #fff;
}

.story-card--mission {
  color: #fff;
  background: linear-gradient(145deg, #0d4ec6, #6748f5);
  border: 0;
}

.story-card h2 {
  margin: 8px 0 14px;
  font-size: 32px;
}

.value-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
}

.values-wrap {
  width: min(calc(100% - 48px), 1100px);
  margin: 42px auto 80px;
}

.article-card .more {
  display: inline-block;
  margin-top: 18px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

.app-footer {
  padding: 18px 24px 28px;
  color: #8a97ab;
  font-size: 13px;
  text-align: center;
  background: #fff;
}

.app-footer a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.app-footer img {
  width: 16px;
  height: 16px;
}

.modal__box {
  width: min(100%, 520px);
  padding: 28px;
  border-radius: 18px;
  background: #fff;
  text-align: center;
}

@media (max-width: 860px) {
  .app-header {
    gap: 12px;
    padding: 0 14px;
  }
}

@media (max-width: 980px) {
  .purchase-cta,
  .home-hero-showcase {
    grid-template-columns: 1fr;
  }

  .home-hero-showcase {
    min-height: 430px;
  }
}

@media (max-width: 700px) {
  .nav a {
    padding: 0 8px;
    font-size: 13px;
  }

  .nav-full {
    display: none;
  }

  .nav-short {
    display: inline;
  }

  .nav svg {
    display: none;
  }

  .purchase-label {
    display: none;
  }

  .purchase-btn {
    width: 38px;
    padding: 0;
  }

  .hero-actions,
  .section-head,
  .dl-card__footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta,
  .about-story article,
  .article-card {
    padding: 22px 20px;
  }
}