tml:not(.qvra) body {
  filter: blur(10px);
  -webkit-filter: blur(10px);
}

body {
  transition: filter 0.5s ease, opacity 0.5s ease;
}

:root {
  color-scheme: dark;
  --bg: #090b12;
  --panel: #121620;
  --panel-strong: #191f2c;
  --text: #f6f7fb;
  --muted: #aab2c3;
  --line: rgba(255, 255, 255, 0.12);
  --red: #ff4655;
  --teal: #21d6c8;
  --gold: #f1c45f;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 16% 10%, rgba(255, 70, 85, 0.24), transparent 26rem),
    radial-gradient(circle at 82% 12%, rgba(33, 214, 200, 0.14), transparent 24rem),
    linear-gradient(180deg, #0a0c13 0%, #11151f 48%, #090b12 100%);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(18px);
}

.brand,
.nav-links,
.trust-row,
.hero-actions {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  background: var(--red);
  color: #fff;
  font-weight: 900;
  clip-path: polygon(12% 0, 100% 0, 88% 100%, 0 100%);
}

.nav-links {
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--line);
  background: rgba(9, 11, 18, 0.62);
}

.nav-links a {
  padding: 8px 14px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.hero-section,
.section-block,
.refund-band,
.site-footer {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: 34px;
  align-items: center;
  min-height: calc(100vh - 88px);
  padding: 42px 0 76px;
}

.hero-copy h1,
.section-heading h2,
.purchase-copy h2,
.refund-band h2 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy h1 {
  max-width: 8em;
  font-size: clamp(48px, 8vw, 104px);
}

.hero-text {
  max-width: 620px;
  margin: 24px 0 0;
  color: #d9deea;
  font-size: 18px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.primary-button,
.secondary-button,
.refund-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 800;
}

.primary-button {
  background: var(--red);
  color: #fff;
  box-shadow: 0 16px 34px rgba(255, 70, 85, 0.28);
}

.primary-button:hover {
  background: #ff5b68;
}

.secondary-button {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
}

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

.trust-row {
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.trust-row span {
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 13px;
}

.hero-visual {
  position: relative;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: linear-gradient(135deg, rgba(255, 70, 85, 0.24), rgba(33, 214, 200, 0.12));
  box-shadow: var(--shadow);
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  pointer-events: none;
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 1280 / 590;
  object-fit: cover;
  background: #0b0e15;
}

.section-block {
  padding: 74px 0;
}

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

.section-heading h2,
.purchase-copy h2,
.refund-band h2 {
  font-size: clamp(30px, 4vw, 52px);
}

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

.feature-card {
  min-height: 230px;
  padding: 24px;
  border: 1px solid var(--line);
  background: rgba(18, 22, 32, 0.86);
}

.feature-index {
  color: var(--gold);
  font-weight: 900;
}

.feature-card h3 {
  margin: 42px 0 12px;
  font-size: 23px;
}

.feature-card p,
.detail-panel p,
.process-item p,
.summary-card p,
.faq-item p,
.purchase-copy p,
.refund-band p,
.site-footer p {
  margin: 0;
  color: var(--muted);
}

.image-section {
  border-top: 1px solid var(--line);
}

.detail-section,
.process-section,
.device-summary,
.faq-section {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.detail-grid,
.summary-grid,
.faq-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.summary-grid,
.faq-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.faq-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.detail-panel,
.summary-card,
.faq-item {
  min-height: 190px;
  padding: 22px;
  border: 1px solid var(--line);
  background: rgba(18, 22, 32, 0.78);
}

.detail-panel h3,
.process-item h3,
.summary-card h3,
.faq-item h3 {
  margin: 0 0 10px;
  color: #fff;
  font-size: 20px;
  line-height: 1.25;
}

.process-list {
  display: grid;
  gap: 14px;
}

.process-item {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 22px;
  border: 1px solid var(--line);
  background: rgba(18, 22, 32, 0.72);
}

.process-item span,
.summary-card span {
  color: var(--gold);
  font-weight: 900;
}

.process-item span {
  font-size: 22px;
}

.summary-card {
  display: flex;
  min-height: 260px;
  flex-direction: column;
  align-items: flex-start;
}

.summary-card h3 {
  margin-top: 28px;
}

.summary-card .secondary-button {
  width: 100%;
  margin-top: auto;
}

.faq-item {
  min-height: 150px;
}

.image-gallery {
  display: grid;
  grid-template-columns: minmax(0, 1.14fr) minmax(280px, 0.86fr);
  gap: 18px;
  align-items: stretch;
}

.image-gallery figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
}

.image-gallery img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.image-gallery figure:nth-child(2) img {
  object-position: center top;
}

.image-gallery figcaption {
  padding: 14px 16px;
  color: #dfe5f0;
  font-size: 14px;
}

.purchase-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 34px;
  border: 1px solid rgba(255, 70, 85, 0.34);
  background:
    linear-gradient(90deg, rgba(255, 70, 85, 0.18), rgba(33, 214, 200, 0.08)),
    rgba(18, 22, 32, 0.9);
}

.purchase-copy {
  max-width: 720px;
}

.purchase-copy p {
  margin-top: 12px;
}

.wide-button {
  min-width: 220px;
  white-space: nowrap;
}

.refund-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  margin-top: 74px;
  padding: 30px;
  border: 1px solid rgba(241, 196, 95, 0.42);
  background: rgba(241, 196, 95, 0.1);
}

.refund-band p {
  max-width: 760px;
  margin-top: 12px;
}

.refund-button {
  border-color: rgba(241, 196, 95, 0.7);
  color: #ffe2a0;
  background: rgba(241, 196, 95, 0.12);
  white-space: nowrap;
}

.refund-button:hover {
  background: rgba(241, 196, 95, 0.2);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 34px 0 42px;
  margin-top: 36px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.site-footer a {
  color: #ffe2a0;
}

.guide-hero,
.refund-hero {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 52px 0 28px;
}

.guide-panel {
  max-width: 780px;
  padding: 34px;
  border: 1px solid rgba(255, 70, 85, 0.34);
  background:
    linear-gradient(135deg, rgba(255, 70, 85, 0.22), rgba(33, 214, 200, 0.1)),
    rgba(18, 22, 32, 0.94);
  box-shadow: var(--shadow);
}

.guide-panel h1,
.refund-copy h1 {
  margin: 0;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 1.08;
  letter-spacing: 0;
}

.guide-panel p,
.refund-copy p {
  max-width: 680px;
  margin: 18px 0 0;
  color: #d9deea;
}

.guide-main-button {
  width: min(100%, 320px);
  margin-top: 24px;
}

.device-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  width: min(1180px, calc(100% - 32px));
  margin: 28px auto 0;
}

.device-card {
  display: flex;
  min-height: 280px;
  flex-direction: column;
  align-items: flex-start;
  padding: 24px;
  border: 1px solid var(--line);
  background: rgba(18, 22, 32, 0.9);
}

.device-card.is-featured {
  border-color: rgba(255, 70, 85, 0.46);
  background:
    linear-gradient(180deg, rgba(255, 70, 85, 0.18), rgba(18, 22, 32, 0.92)),
    var(--panel);
}

.device-label {
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
}

.device-card h2 {
  margin: 34px 0 10px;
  font-size: 28px;
  line-height: 1.15;
}

.device-card p {
  margin: 0 0 24px;
  color: var(--muted);
}

.device-card .primary-button,
.device-card .secondary-button {
  width: 100%;
  margin-top: auto;
}

.guide-refund {
  margin-top: 34px;
}

.refund-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(360px, 1.12fr);
  gap: 28px;
  align-items: start;
}

.refund-copy {
  padding-top: 18px;
}

.refund-form {
  display: grid;
  gap: 16px;
  padding: 26px;
  border: 1px solid rgba(241, 196, 95, 0.42);
  background: rgba(18, 22, 32, 0.95);
  box-shadow: var(--shadow);
}

.refund-form label {
  display: grid;
  gap: 8px;
}

.refund-form span {
  color: #edf1f8;
  font-size: 14px;
  font-weight: 800;
}

.refund-form input,
.refund-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font: inherit;
  outline: none;
}

.refund-form input {
  min-height: 48px;
  padding: 0 14px;
}

.refund-form textarea {
  resize: vertical;
  min-height: 132px;
  padding: 12px 14px;
}

.refund-form input:focus,
.refund-form textarea:focus {
  border-color: rgba(33, 214, 200, 0.76);
}

.refund-submit {
  width: 100%;
  border: 0;
  cursor: pointer;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.refund-helper {
  margin-top: 34px;
}

.js-hero-ready .hero-visual,
.js-hero-ready .feature-card,
.js-hero-ready .detail-panel,
.js-hero-ready .process-item,
.js-hero-ready .summary-card,
.js-hero-ready .faq-item,
.js-hero-ready .image-gallery figure,
.js-hero-ready .purchase-section,
.js-hero-ready .refund-band,
.js-hero-ready .guide-panel,
.js-hero-ready .device-card,
.js-hero-ready .refund-form {
  transform: translateY(0);
  opacity: 1;
}

body:not(.js-hero-ready) .hero-visual,
body:not(.js-hero-ready) .feature-card,
body:not(.js-hero-ready) .detail-panel,
body:not(.js-hero-ready) .process-item,
body:not(.js-hero-ready) .summary-card,
body:not(.js-hero-ready) .faq-item,
body:not(.js-hero-ready) .image-gallery figure,
body:not(.js-hero-ready) .purchase-section,
body:not(.js-hero-ready) .refund-band,
body:not(.js-hero-ready) .guide-panel,
body:not(.js-hero-ready) .device-card,
body:not(.js-hero-ready) .refund-form {
  transform: translateY(18px);
  opacity: 0.72;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    gap: 14px;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
  }

  .nav-links a {
    flex: 0 0 auto;
  }

  .hero-section {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 30px;
  }

  .hero-copy h1 {
    font-size: clamp(44px, 14vw, 74px);
  }

  .feature-grid,
  .detail-grid,
  .summary-grid,
  .faq-grid,
  .image-gallery,
  .refund-band,
  .device-grid,
  .refund-hero {
    grid-template-columns: 1fr;
  }

  .purchase-section,
  .site-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .wide-button,
  .refund-button {
    width: 100%;
  }

  .image-gallery img {
    height: auto;
    aspect-ratio: 16 / 10;
  }
}

@media (max-width: 520px) {
  .hero-section,
  .section-block,
  .refund-band,
  .site-footer,
  .guide-hero,
  .refund-hero,
  .device-grid {
    width: min(100% - 24px, 1180px);
  }

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

  .primary-button,
  .secondary-button,
  .refund-button {
    width: 100%;
    padding: 0 16px;
  }

  .feature-card,
  .detail-panel,
  .summary-card,
  .faq-item,
  .purchase-section,
  .refund-band,
  .guide-panel,
  .device-card,
  .refund-form {
    padding: 20px;
  }

  .process-item {
    grid-template-columns: 1fr;
    padding: 20px;
  }
}