:root {
  --bg: #f3f6fb;
  --surface: #ffffff;
  --surface-strong: #0b1220;
  --surface-deep: #0d1729;
  --text: #0f172a;
  --text-soft: #526074;
  --text-light: #7e8a9b;
  --line: #d7dee8;
  --line-strong: #c1ccd9;
  --primary: #1262d6;
  --primary-dark: #0c4eb0;
  --primary-soft: #e8f1fe;
  --accent-soft: #eef4fb;
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
  --shadow-strong: 0 26px 80px rgba(13, 23, 41, 0.14);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(18, 98, 214, 0.08), transparent 28%),
    radial-gradient(circle at top right, rgba(11, 18, 32, 0.06), transparent 26%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  color: var(--text);
  line-height: 1.7;
}

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

img {
  max-width: 100%;
  height: auto;
}

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.narrow {
  max-width: 840px;
}

.section {
  padding: 82px 0;
}

.section-muted {
  background:
    linear-gradient(180deg, rgba(18, 98, 214, 0.035), rgba(255, 255, 255, 0.72)),
    #f6f9fc;
  border-top: 1px solid rgba(18, 98, 214, 0.07);
  border-bottom: 1px solid rgba(18, 98, 214, 0.07);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(15, 23, 34, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 82px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background:
    linear-gradient(135deg, #0b1220 0%, #17335f 100%);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 12px 24px rgba(11, 18, 32, 0.18);
}

.brand-mark-image {
  padding: 0;
  overflow: hidden;
}

.brand-mark-image img {
  width: 100%;
  height: 100%;
  display: block;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text strong {
  font-size: 1rem;
}

.brand-text small {
  color: var(--text-soft);
  font-size: 0.76rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  color: var(--text-soft);
  font-weight: 500;
  position: relative;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.22s ease;
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease, background-color 0.22s ease, color 0.22s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #0d56c5 100%);
  color: #fff;
  box-shadow: 0 14px 34px rgba(18, 98, 214, 0.24);
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  border-color: var(--line);
}

.btn-secondary:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}

.hero {
  padding-top: 92px;
  position: relative;
}

.hero-grid,
.detail-hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 38px;
  align-items: center;
}

.hero-copy {
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  margin-bottom: 16px;
  border-radius: 999px;
  border: 1px solid rgba(18, 98, 214, 0.14);
  background: rgba(255, 255, 255, 0.88);
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 0.86rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1,
h2,
h3 {
  margin: 0 0 14px;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.2rem;
}

p {
  margin: 0 0 14px;
  color: var(--text-soft);
}

.hero-text {
  font-size: 1.08rem;
  max-width: 720px;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0;
}

.hero-points,
.inline-list,
.check-list,
.detail-meta,
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-points {
  display: grid;
  gap: 10px;
  color: var(--text);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 0 0 28px;
}

.metric-item {
  padding: 16px 18px;
  border: 1px solid rgba(15, 23, 42, 0.07);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 34px rgba(15, 23, 42, 0.05);
}

.metric-item strong,
.metric-item span {
  display: block;
}

.metric-item strong {
  margin-bottom: 4px;
  color: var(--text);
  font-size: 1rem;
}

.metric-item span {
  color: var(--text-soft);
  font-size: 0.92rem;
}

.hero-points li::before,
.check-list li::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  margin-right: 10px;
  vertical-align: middle;
}

.hero-card,
.detail-side-card,
.cta-box,
.card,
.step-card {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(15, 23, 34, 0.07);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero-card,
.detail-side-card {
  padding: 30px;
  position: relative;
  overflow: hidden;
}

.hero-card::before,
.detail-side-card::before,
.cta-box::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle, rgba(18, 98, 214, 0.12), transparent 68%);
  pointer-events: none;
}

.card-panel-head {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--text-soft);
  font-size: 0.84rem;
  font-weight: 600;
}

.panel-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 6px rgba(18, 98, 214, 0.1);
}

.stat-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.stat-row:last-of-type {
  border-bottom: 0;
}

.stat-row span,
.detail-meta span {
  color: var(--text-soft);
}

.future-panel {
  margin-top: 16px;
  padding: 20px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #0b1220 0%, #11233d 100%);
}

.future-panel h2 {
  font-size: 1rem;
  color: #fff;
}

.future-panel p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.72);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 32px;
}

.grid {
  display: grid;
  gap: 22px;
}

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

.cards-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.cards-5 {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.api-grid,
.pricing-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.pricing-top-grid,
.pricing-preview,
.docs-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card,
.step-card {
  padding: 26px;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.card:hover,
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-strong);
  border-color: rgba(18, 98, 214, 0.14);
}

.feature-card,
.doc-card,
.contact-card {
  min-height: 100%;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(15, 23, 34, 0.06);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.tag-blue {
  background: var(--primary-soft);
  color: var(--primary);
}

.tag-muted {
  background: #eef2f6;
  color: var(--text-soft);
}

.inline-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 20px;
}

.inline-list li {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--text-soft);
  font-size: 0.92rem;
}

.text-link {
  color: var(--primary);
  font-weight: 600;
}

.api-card-highlight {
  border-color: rgba(17, 103, 216, 0.18);
}

.price-line {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
}

.price-line strong {
  font-size: 2rem;
  line-height: 1;
  color: var(--text);
}

.price-line span,
.unit-price {
  color: var(--text-light);
}

.pricing-card {
  position: relative;
}

.pricing-card-featured {
  border-color: rgba(17, 103, 216, 0.22);
  background: linear-gradient(180deg, rgba(232, 241, 254, 0.72), rgba(255, 255, 255, 0.92));
  box-shadow: 0 24px 56px rgba(17, 103, 216, 0.14);
}

.pricing-card-wide {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 18px 0 24px;
}

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

.step-index {
  display: inline-block;
  margin-bottom: 18px;
  font-weight: 700;
  color: var(--primary);
  font-size: 1.15rem;
}

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

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.94);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq-item:hover,
.faq-item.is-open {
  border-color: rgba(18, 98, 214, 0.18);
  box-shadow: 0 16px 34px rgba(15, 23, 42, 0.06);
}

.faq-question {
  width: 100%;
  padding: 22px 24px;
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}

.faq-answer {
  display: none;
  padding: 0 24px 22px;
}

.faq-item.is-open .faq-answer {
  display: block;
}

.cta-section {
  padding-top: 50px;
}

.cta-box {
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(11, 18, 32, 0.98), rgba(17, 39, 70, 0.96));
}

.cta-box h2,
.cta-box p {
  color: #ffffff;
}

.cta-box .eyebrow {
  color: #82b1ff;
}

/* 首页功能特性宣传区（白底细边框卡片，与通用 .card 阴影风格区分） */
.features-promo {
  background: #fff;
  border-top: 1px solid rgba(15, 23, 34, 0.06);
  border-bottom: 1px solid rgba(15, 23, 34, 0.06);
}

.features-promo-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.features-promo-header h2 {
  margin: 0 0 12px;
  font-size: clamp(1.65rem, 2.5vw, 2.1rem);
  font-weight: 700;
  color: #1a1a1a;
  letter-spacing: -0.02em;
}

.features-promo-lead {
  margin: 0;
  font-size: 1.05rem;
  color: #666;
  line-height: 1.65;
}

.features-promo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.feature-promo-card {
  margin: 0;
  padding: 26px 24px;
  background: #fff;
  border: 1px solid #eceef1;
  border-radius: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.feature-promo-card:hover {
  border-color: rgba(18, 98, 214, 0.2);
  box-shadow: 0 12px 36px rgba(15, 23, 42, 0.06);
}

.feature-promo-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.feature-promo-top h3 {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 700;
  color: #1a1a1a;
}

.feature-promo-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.04);
}

.feature-promo-icon svg {
  display: block;
}

.feature-promo-icon--blue {
  color: #2563eb;
  background: rgba(37, 99, 235, 0.1);
}

.feature-promo-icon--green {
  color: #16a34a;
  background: rgba(22, 163, 74, 0.1);
}

.feature-promo-icon--purple {
  color: #9333ea;
  background: rgba(147, 51, 234, 0.1);
}

.feature-promo-icon--amber {
  color: #ca8a04;
  background: rgba(202, 138, 4, 0.12);
}

.feature-promo-icon--red {
  color: #dc2626;
  background: rgba(220, 38, 38, 0.08);
}

.feature-promo-card p {
  margin: 0;
  font-size: 0.95rem;
  color: #666;
  line-height: 1.7;
}

@media (max-width: 1080px) {
  .features-promo-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .features-promo-grid {
    grid-template-columns: 1fr;
  }

  .features-promo-header {
    margin-bottom: 36px;
  }
}

.trust-strip {
  padding: 0 0 26px;
}

.trust-strip-inner {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  padding: 18px 22px;
  border: 1px solid rgba(15, 23, 42, 0.07);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.05);
}

.trust-strip-inner span {
  color: var(--text-soft);
  font-weight: 600;
  text-align: center;
}

.side-note {
  margin-top: 18px;
  padding: 18px;
  border-radius: 18px;
  background: var(--accent-soft);
}

.side-note strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
}

.site-footer {
  padding: 68px 0 28px;
  background:
    radial-gradient(circle at top left, rgba(18, 98, 214, 0.18), transparent 24%),
    linear-gradient(180deg, #09111f 0%, #0d1626 100%);
  color: rgba(255, 255, 255, 0.72);
}

.site-footer h2,
.site-footer h3 {
  color: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 24px;
}

.footer-links {
  display: grid;
  gap: 12px;
}

.footer-bottom {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.page-hero {
  padding-top: 72px;
  padding-bottom: 42px;
}

.detail-meta {
  display: grid;
  gap: 16px;
}

.detail-meta li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.detail-meta li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.intro-card {
  max-width: 900px;
}

.table-wrap {
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
  background: rgba(255, 255, 255, 0.94);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.compare-table th,
.compare-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.compare-table th {
  background: #f5f7fa;
  color: var(--text);
}

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

.contact-layout {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 22px;
  align-items: start;
}

.contact-info {
  display: grid;
  gap: 18px;
}

.contact-value {
  color: var(--text);
  font-weight: 600;
}

.form-card h2 {
  margin-bottom: 8px;
}

.contact-form {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.contact-form label {
  color: var(--text);
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  padding: 14px 16px;
  color: var(--text);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: rgba(17, 103, 216, 0.5);
  box-shadow: 0 0 0 4px rgba(17, 103, 216, 0.08);
}

.form-hidden-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

.form-alert {
  margin-top: 18px;
  margin-bottom: 18px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid transparent;
}

.form-alert strong,
.form-alert p {
  color: inherit;
  margin: 0;
}

.form-alert p + p {
  margin-top: 6px;
}

.form-alert-success {
  background: #eef9f2;
  border-color: #b8e2c4;
  color: #21653a;
}

.form-alert-error {
  background: #fff3f1;
  border-color: #f0c3bb;
  color: #9a3528;
}

.code-block {
  margin: 0;
  padding: 22px;
  border-radius: 18px;
  background: #0f1722;
  color: #d7e1ee;
  overflow-x: auto;
  font-family: "Consolas", "Courier New", monospace;
  line-height: 1.6;
}

/* 价格页：套餐卡片、买断动效、权益条 */
.privilege-banner {
  padding: 22px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(18, 98, 214, 0.16);
  background: linear-gradient(120deg, rgba(232, 241, 254, 0.95), rgba(255, 255, 255, 0.98));
  box-shadow: 0 18px 44px rgba(17, 103, 216, 0.1);
}

.privilege-banner h2 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.privilege-banner p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.98rem;
}

.privilege-banner ul {
  margin: 14px 0 0;
  padding-left: 1.15rem;
  color: var(--text-soft);
  display: grid;
  gap: 8px;
}

.recharge-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.recharge-head h2 {
  margin: 0;
}

.recharge-intro {
  margin: -8px 0 22px;
  max-width: 720px;
  color: var(--text-soft);
  line-height: 1.65;
}

.btn-ghost {
  min-height: 40px;
  padding: 0 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  color: var(--text-soft);
  font-weight: 600;
  cursor: pointer;
}

.btn-ghost:hover {
  border-color: var(--line-strong);
  color: var(--text);
}

.recharge-grid-3,
.recharge-grid-4 {
  display: grid;
  gap: 22px;
}

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

.recharge-grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.recharge-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  position: relative;
  padding: 24px 22px 22px;
}

.recharge-card h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
}

.recharge-card-desc {
  margin: 0 0 16px;
  color: var(--text-soft);
  font-size: 0.92rem;
  line-height: 1.55;
  flex-grow: 0;
}

.recharge-grid-3 .recharge-card-desc {
  min-height: 3.1em;
}

.recharge-grid-3 .recharge-price {
  min-height: 2.2em;
  display: flex;
  align-items: flex-end;
}

.recharge-price {
  margin: 0 0 8px;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.recharge-meta {
  margin: 0 0 20px;
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.5;
  flex-grow: 1;
}

.btn-dark {
  background: var(--surface-strong);
  color: #fff;
  border-color: var(--surface-strong);
  border-radius: 12px;
  width: 100%;
  margin-top: auto;
}

.btn-dark:hover {
  background: #152238;
  border-color: #152238;
  box-shadow: 0 14px 32px rgba(11, 18, 32, 0.22);
}

.recharge-card .btn {
  border-radius: 12px;
}

.recharge-old-price {
  margin: 0 0 6px;
  font-size: 0.95rem;
  color: var(--text-light);
  min-height: 1.3em;
}

.recharge-old-price del {
  text-decoration: line-through;
}

.recharge-old-price-placeholder {
  visibility: hidden;
}

.buyout-spotlight {
  padding-top: 24px;
  border: 2px solid transparent;
  background:
    linear-gradient(#fff, #fff) padding-box,
    linear-gradient(125deg, #f59e0b, #1262d6, #a855f7, #f59e0b) border-box;
  background-size: 100% 100%, 200% 200%;
  animation: buyout-border-shift 5s linear infinite, buyout-pulse 2.4s ease-in-out infinite;
  box-shadow:
    0 0 0 1px rgba(245, 158, 11, 0.12),
    0 24px 56px rgba(18, 98, 214, 0.16);
  overflow: hidden;
}

.buyout-spotlight::before {
  content: "";
  position: absolute;
  inset: -40% -60%;
  background: linear-gradient(
    105deg,
    transparent 42%,
    rgba(255, 255, 255, 0.55) 50%,
    transparent 58%
  );
  animation: buyout-shine 3.2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes buyout-border-shift {
  0% {
    background-position: 0% 0%, 0% 50%;
  }
  100% {
    background-position: 0% 0%, 200% 50%;
  }
}

@keyframes buyout-shine {
  0% {
    transform: translateX(-12%) rotate(12deg);
  }
  100% {
    transform: translateX(28%) rotate(12deg);
  }
}

@keyframes buyout-pulse {
  0%,
  100% {
    box-shadow:
      0 0 0 1px rgba(245, 158, 11, 0.2),
      0 24px 56px rgba(18, 98, 214, 0.14);
  }
  50% {
    box-shadow:
      0 0 0 3px rgba(245, 158, 11, 0.35),
      0 28px 64px rgba(18, 98, 214, 0.22);
  }
}

.spotlight-ribbon {
  position: absolute;
  top: 8px;
  right: -36px;
  transform: rotate(38deg);
  min-width: 140px;
  text-align: center;
  padding: 6px 40px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #0b1220;
  background: linear-gradient(90deg, #fde68a, #fbbf24);
  box-shadow: 0 6px 16px rgba(245, 158, 11, 0.35);
  z-index: 2;
}

.recharge-grid-3 .buyout-spotlight .recharge-price {
  font-size: 2rem;
}

.tag-hot {
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  color: #92400e;
}

@media (prefers-reduced-motion: reduce) {
  .buyout-spotlight,
  .buyout-spotlight::before {
    animation: none;
  }

  .buyout-spotlight {
    background: #fff;
    border-color: rgba(245, 158, 11, 0.45);
  }

  .buyout-spotlight::before {
    display: none;
  }
}

@media (max-width: 1080px) {
  .cards-4,
  .api-grid,
  .pricing-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cards-5 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-metrics,
  .trust-strip-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps,
  .footer-grid,
  .contact-layout,
  .hero-grid,
  .detail-hero {
    grid-template-columns: 1fr;
  }

  .recharge-grid-4,
  .recharge-grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 14px 0;
  }

  .site-nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
    border-top: 1px solid var(--line);
    padding-top: 12px;
  }

  .site-nav a {
    padding: 12px 0;
  }

  .header-actions {
    display: flex;
    flex-direction: column;
    width: 100%;
    padding-top: 10px;
    gap: 10px;
  }

  .btn {
    width: 100%;
  }

  .pricing-top-grid,
  .pricing-preview,
  .docs-grid,
  .cards-3,
  .cards-4,
  .api-grid,
  .pricing-grid,
  .cards-5,
  .hero-metrics,
  .trust-strip-inner,
  .recharge-grid-4,
  .recharge-grid-3 {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 64px 0;
  }

  .hero {
    padding-top: 56px;
  }

  .cta-box {
    padding: 24px;
  }
}

@media (max-width: 540px) {
  .container {
    width: min(var(--container), calc(100% - 24px));
  }

  h1 {
    font-size: 2.15rem;
  }

  h2 {
    font-size: 1.65rem;
  }

  .card,
  .step-card,
  .hero-card,
  .detail-side-card {
    padding: 22px;
  }

  .faq-question {
    padding: 18px 18px;
  }

  .faq-answer {
    padding: 0 18px 18px;
  }
}