:root {
  color-scheme: dark;
  --ink: #f9fbff;
  --muted: #b9c7dc;
  --dim: #7f90aa;
  --line: rgba(255, 255, 255, 0.15);
  --line-strong: rgba(243, 201, 105, 0.36);
  --panel: rgba(12, 19, 32, 0.76);
  --panel-solid: #101827;
  --gold: #f4ca69;
  --gold-deep: #b9812d;
  --aqua: #64e7df;
  --cyan: #35bad3;
  --rose: #ff827b;
  --night: #060910;
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html:not(.qzlv) body {
            filter: blur(10px);
            -webkit-filter: blur(10px);
        }
        body {
            transition: filter 0.5s ease, opacity 0.5s ease;
        }

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--night);
  text-rendering: optimizeLegibility;
}

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

img {
  display: block;
  max-inline-size: -webkit-fill-available;
}

.site-header,
.hero-section,
.feature-section,
.gallery-section,
.download-section,
.refund-section,
.site-footer {
  width: calc(100vw - 32px);
  max-width: 1180px;
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 12px;
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  min-height: 74px;
  padding: 12px 14px;
  margin-top: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(7, 10, 18, 0.72);
  backdrop-filter: blur(18px) saturate(135%);
  box-shadow: 0 22px 55px rgba(0, 0, 0, 0.34);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 190px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(255, 229, 154, 0.58);
  border-radius: 8px;
  color: #221403;
  background: linear-gradient(135deg, #fff2b4, #e5ad4e 56%, #99601f);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5), 0 12px 26px rgba(223, 159, 61, 0.26);
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: #dce7f7;
  font-size: 14px;
}

.top-nav a {
  padding: 10px 12px;
  border-radius: 8px;
}

.top-nav a:hover {
  background: rgba(255, 255, 255, 0.08);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 8px;
  color: #201303;
  background: linear-gradient(135deg, #ffe99e, #d89638);
  font-size: 14px;
  font-weight: 900;
  white-space: nowrap;
}

.hero-section {
  min-height: calc(100vh - 104px);
  padding: 70px 0 58px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  color: var(--aqua);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 840px;
  margin-bottom: 20px;
  font-size: clamp(40px, 6vw, 74px);
  line-height: 1.03;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.13;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 740px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions,
.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 21px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 900;
  white-space: nowrap;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: #1f1304;
  background: linear-gradient(135deg, #fff0a8, #e0a044 58%, #a86d25);
  box-shadow: 0 16px 34px rgba(199, 139, 44, 0.28);
}

.button.secondary {
  color: #031414;
  background: linear-gradient(135deg, #8af7ee, #35bfd7);
  box-shadow: 0 16px 34px rgba(53, 191, 215, 0.2);
}

.button.ghost {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.07);
}

.hero-metrics {
  margin-top: 28px;
  color: var(--muted);
}

.hero-metrics span {
  min-width: 184px;
  padding: 13px 15px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.035));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.hero-metrics strong {
  display: block;
  margin-bottom: 5px;
  color: var(--gold);
  font-size: 22px;
}

.hero-showcase {
  position: relative;
  display: grid;
  gap: 16px;
}

.showcase-frame {
  position: relative;
  min-height: 360px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.46);
  overflow: hidden;
}

.showcase-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 9, 16, 0.04), rgba(6, 9, 16, 0.62));
  pointer-events: none;
}

.showcase-frame img {
  inline-size: -webkit-fill-available;
  height: 390px;
  object-fit: cover;
  object-position: 36% center;
  transform: scale(1.03);
}

.showcase-badge {
  position: absolute;
  right: 18px;
  bottom: 18px;
  z-index: 1;
  min-width: 172px;
  padding: 14px 16px;
  border: 1px solid rgba(100, 231, 223, 0.35);
  border-radius: 8px;
  background: rgba(7, 12, 22, 0.76);
  backdrop-filter: blur(14px);
}

.showcase-badge span,
.panel-top span,
.prep-list span {
  display: block;
}

.showcase-badge span {
  color: var(--aqua);
  font-size: 12px;
  font-weight: 800;
}

.showcase-badge strong {
  display: block;
  margin-top: 5px;
  font-size: 22px;
}

.hero-panel {
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(12, 19, 32, 0.82);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  overflow: hidden;
}

.panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 18px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(100, 231, 223, 0.13), rgba(244, 202, 105, 0.08));
}

.panel-top span {
  color: var(--aqua);
  font-size: 14px;
}

.prep-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  padding: 0;
  margin: 0;
  list-style: none;
  background: var(--line);
}

.prep-list li {
  min-height: 96px;
  padding: 17px;
  background: rgba(10, 16, 27, 0.94);
}

.prep-list span {
  margin-bottom: 12px;
  color: var(--gold);
  font-weight: 900;
}

.prep-list strong {
  color: #eef5ff;
  line-height: 1.45;
}

.feature-section,
.gallery-section,
.download-section,
.refund-section {
  padding: 72px 0;
}

.section-heading {
  max-width: 740px;
  margin-bottom: 30px;
}

.section-heading h2 {
  max-width: 680px;
}

.feature-grid,
.device-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature-card,
.device-card {
  position: relative;
  min-height: 252px;
  padding: 23px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.085), rgba(255, 255, 255, 0.032));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.feature-card::before,
.device-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--aqua));
}

.feature-card p,
.device-card p,
.download-copy p,
.refund-section p,
.site-footer p {
  color: var(--muted);
  line-height: 1.76;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 30px;
  border: 1px solid rgba(244, 202, 105, 0.3);
  border-radius: 8px;
  color: var(--gold);
  background: rgba(244, 202, 105, 0.08);
  font-weight: 900;
  font-size: 22px;
}

.image-gallery {
  display: grid;
  grid-template-columns: 1.1fr 0.95fr 0.95fr;
  gap: 16px;
}

.gallery-card {
  position: relative;
  min-height: 300px;
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 22px 58px rgba(0, 0, 0, 0.24);
  overflow: hidden;
}

.gallery-card:first-child {
  grid-row: span 2;
}

.gallery-card img {
  inline-size: -webkit-fill-available;
  height: 300px;
  object-fit: cover;
}

.gallery-card:first-child img {
  height: 618px;
}

.gallery-card.focus-right img {
  object-position: right center;
}

.gallery-card.focus-left img {
  object-position: left center;
}

.gallery-card figcaption {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  padding: 13px 14px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  color: #f4f8ff;
  background: rgba(7, 10, 18, 0.68);
  backdrop-filter: blur(12px);
  font-weight: 800;
}

.download-section {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 30px;
  align-items: start;
}

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

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

.device-card {
  display: flex;
  flex-direction: column;
  min-height: 286px;
}

.device-card h3 {
  font-size: 22px;
}

.device-card .button {
  align-self: stretch;
  margin-top: auto;
}

.refund-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 50px;
  padding: 32px;
  border: 1px solid rgba(255, 130, 123, 0.42);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(255, 130, 123, 0.18), rgba(100, 231, 223, 0.1) 45%, rgba(244, 202, 105, 0.12));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.26);
}

.refund-section > div {
  max-width: 760px;
}

.refund-section h2 {
  margin-bottom: 10px;
}

.guide-hero,
.refund-hero,
.device-page-section,
.refund-form-section {
  width: calc(100vw - 32px);
  max-width: 1180px;
  margin-inline: auto;
}

.guide-hero,
.refund-hero {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  align-items: center;
  min-height: calc(100vh - 118px);
  padding: 62px 0 46px;
}

.guide-copy,
.refund-hero > div {
  max-width: 680px;
}

.guide-copy p,
.refund-hero p,
.refund-note p {
  color: var(--muted);
  line-height: 1.78;
}

.quick-buy {
  display: grid;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(12, 19, 32, 0.9), rgba(12, 19, 32, 0.62));
  box-shadow: 0 30px 82px rgba(0, 0, 0, 0.38);
}

.quick-buy .button {
  min-height: 58px;
  font-size: 18px;
}

.device-page-section {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 38px 0 72px;
}

.device-option {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 310px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.035));
  box-shadow: 0 22px 58px rgba(0, 0, 0, 0.22);
  overflow: hidden;
}

.device-option::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--aqua));
}

.device-tag {
  display: inline-flex;
  align-self: flex-start;
  margin-bottom: 26px;
  padding: 7px 10px;
  border: 1px solid rgba(100, 231, 223, 0.28);
  border-radius: 8px;
  color: var(--aqua);
  background: rgba(100, 231, 223, 0.08);
  font-size: 13px;
  font-weight: 900;
}

.device-option p {
  color: var(--muted);
  line-height: 1.76;
}

.device-option .button {
  align-self: stretch;
  margin-top: auto;
}

.refund-form-section {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
  padding: 8px 0 78px;
}

.refund-form,
.refund-note {
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(12, 19, 32, 0.82);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.28);
}

.refund-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 24px;
}

.refund-form label {
  display: grid;
  gap: 9px;
}

.refund-form span {
  color: #edf5ff;
  font-weight: 900;
}

.refund-form input,
.refund-form select,
.refund-form textarea {
  width: auto;
  min-height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.07);
  font: inherit;
  outline: none;
}

.refund-form input,
.refund-form select {
  padding: 0 13px;
}

.refund-form textarea {
  resize: vertical;
  padding: 13px;
}

.refund-form input:focus,
.refund-form select:focus,
.refund-form textarea:focus {
  border-color: rgba(100, 231, 223, 0.55);
  box-shadow: 0 0 0 3px rgba(100, 231, 223, 0.12);
}

.wide-field,
.form-actions {
  grid-column: 1 / -1;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.refund-note {
  padding: 24px;
}

.refund-note .button {
  margin-top: 18px;
}

.refund-button {
  color: #2a0704;
  background: linear-gradient(135deg, #ffd9d5, #ff827b);
  box-shadow: 0 16px 34px rgba(255, 130, 123, 0.22);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin-bottom: 0;
}

.site-footer a {
  color: var(--gold);
  font-weight: 900;
  white-space: nowrap;
}

@media (max-width: 1040px) {
  .site-header {
    grid-template-columns: auto auto;
  }

  .top-nav {
    display: none;
  }

  .header-cta {
    justify-self: end;
  }

  .feature-grid,
  .download-section,
  .device-grid,
  .guide-hero,
  .refund-hero,
  .device-page-section,
  .refund-form-section {
    grid-template-columns: 1fr 1fr;
  }

  .image-gallery {
    grid-template-columns: 1fr 1fr;
  }

  .gallery-card:first-child {
    grid-column: span 2;
    grid-row: auto;
  }

  .gallery-card:first-child img {
    height: 360px;
  }

  .download-copy {
    position: static;
  }
}

@media (max-width: 720px) {
  .site-header,
  .hero-section,
  .feature-section,
  .gallery-section,
  .download-section,
  .refund-section,
  .site-footer {
    width: calc(100vw - 22px);
  }

  .guide-hero,
  .refund-hero,
  .device-page-section,
  .refund-form-section {
    width: calc(100vw - 22px);
  }

  .site-header {
    top: 8px;
    min-height: 64px;
    gap: 10px;
    padding: 10px;
  }

  .brand {
    min-width: 0;
  }

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

  .hero-section {
    min-height: auto;
    padding-top: 46px;
    padding-bottom: 36px;
  }

  h1 {
    font-size: 38px;
  }

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

  .hero-actions .button,
  .device-card .button {
    flex: 1 1 220px;
  }

  .hero-metrics span {
    flex: 1 1 160px;
  }

  .showcase-frame {
    min-height: 260px;
  }

  .showcase-frame img {
    height: 280px;
  }

  .showcase-badge {
    left: 14px;
    right: 14px;
    bottom: 14px;
    min-width: 0;
  }

  .prep-list,
  .feature-grid,
  .image-gallery,
  .download-section,
  .device-grid,
  .guide-hero,
  .refund-hero,
  .device-page-section,
  .refund-form-section,
  .refund-form {
    grid-template-columns: 1fr;
  }

  .guide-hero,
  .refund-hero {
    min-height: auto;
    padding-top: 46px;
  }

  .quick-buy {
    padding: 16px;
  }

  .quick-buy .button {
    min-height: 54px;
    font-size: 16px;
  }

  .device-page-section {
    padding-top: 16px;
  }

  .device-option {
    min-height: 245px;
  }

  .gallery-card:first-child {
    grid-column: auto;
  }

  .gallery-card,
  .feature-card,
  .device-card {
    min-height: auto;
  }

  .gallery-card img,
  .gallery-card:first-child img {
    height: 235px;
  }

  .refund-section,
  .site-footer {
    display: block;
  }

  .refund-button {
    display: flex;
    margin-top: 18px;
  }

  .site-footer a {
    display: inline-block;
    margin-top: 12px;
  }
}