:root {
  --background: #fbfdfc;
  --foreground: #102033;
  --muted: #667486;
  --line: #dfe9e7;
  --panel: #ffffff;
  --ink: #102033;
  --teal: #13b994;
  --cyan: #3fb7ee;
  --amber: #f5b84d;
  --coral: #ee7867;
  --shadow: 0 20px 60px rgba(54, 88, 116, 0.11);
  --font-geist-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: Arial, Helvetica, sans-serif;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

main {
  overflow: hidden;
}

.hero {
  position: relative;
  min-height: 88svh;
  color: var(--foreground);
  isolation: isolate;
}

.hero__image,
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero__image {
  background-image: url("hero-gpt-recharge-light.png");
  background-position: center;
  background-size: cover;
}

.hero__overlay {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.82) 42%, rgba(255, 255, 255, 0.08)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.28) 52%, rgba(251, 253, 252, 0.96));
}

.site-nav {
  display: flex;
  width: min(1180px, calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
}

.brand__mark {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid rgba(19, 185, 148, 0.28);
  border-radius: 8px;
  background: rgba(19, 185, 148, 0.12);
  color: #047762;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.1;
}

.brand small {
  margin-top: 3px;
  color: #6d7d8d;
  font-size: 0.78rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px;
  border: 1px solid rgba(16, 32, 51, 0.09);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(18px);
}

.nav-links a,
.nav-cta {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  color: #405166;
  font-size: 0.92rem;
}

.nav-links a {
  min-width: 64px;
  padding: 0 13px;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  background: rgba(19, 185, 148, 0.1);
  color: #087965;
}

.nav-cta {
  min-width: 104px;
  padding: 0 16px;
  border: 1px solid rgba(19, 185, 148, 0.24);
  background: rgba(255, 255, 255, 0.82);
  color: #087965;
}

.nav-cta:hover,
.nav-cta:focus-visible {
  background: #ffffff;
  color: #045f50;
}

.hero__content {
  display: grid;
  width: min(1180px, calc(100% - 40px));
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.48fr);
  align-items: end;
  gap: 42px;
  margin: 0 auto;
  padding: 92px 0 76px;
}

.hero__copy {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 14px;
  color: #0e8e78;
  font-size: 0.82rem;
  font-weight: 800;
}

.eyebrow--dark {
  color: #0e8e78;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: 5rem;
  font-weight: 900;
  line-height: 0.98;
}

.hero__lead {
  max-width: 650px;
  margin: 26px 0 0;
  color: #4e5f73;
  font-size: 1.18rem;
  line-height: 1.8;
}

.hero__badges {
  display: flex;
  max-width: 680px;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero__badges span {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  border: 1px solid rgba(19, 185, 148, 0.26);
  border-radius: 8px;
  padding: 0 12px;
  background: rgba(255, 255, 255, 0.78);
  color: #087965;
  font-size: 0.9rem;
  font-weight: 900;
  box-shadow: 0 12px 28px rgba(54, 88, 116, 0.08);
}

.hero__actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 0 22px;
  font-size: 0.96rem;
  font-weight: 800;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button--primary {
  border: 1px solid rgba(19, 185, 148, 0.18);
  background: var(--teal);
  color: #06100d;
  box-shadow: 0 16px 32px rgba(19, 185, 148, 0.22);
}

.button--ghost {
  border: 1px solid rgba(16, 32, 51, 0.12);
  background: rgba(255, 255, 255, 0.82);
  color: var(--foreground);
}

.button--dark {
  width: 100%;
  border: 1px solid rgba(19, 185, 148, 0.2);
  background: var(--teal);
  color: #06100d;
}

.button--dark:hover,
.button--dark:focus-visible {
  background: #20c9a4;
}

.hero__stats {
  display: grid;
  max-width: 720px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 54px 0 0;
}

.hero__stats div {
  min-height: 94px;
  padding: 18px;
  border: 1px solid rgba(16, 32, 51, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(16px);
  box-shadow: 0 18px 44px rgba(54, 88, 116, 0.1);
}

.hero__stats dt {
  color: var(--foreground);
  font-size: 1.32rem;
  font-weight: 900;
}

.hero__stats dd {
  margin: 8px 0 0;
  color: #6d7d8d;
  font-size: 0.9rem;
}

.hero-products {
  display: grid;
  gap: 10px;
  padding: 16px;
  border: 1px solid rgba(16, 32, 51, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 22px 60px rgba(54, 88, 116, 0.12);
  backdrop-filter: blur(18px);
}

.hero-products__label {
  color: #6d7d8d;
  font-size: 0.82rem;
  font-weight: 800;
}

.hero-product-link {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px;
  border: 1px solid #dfe9e7;
  border-radius: 8px;
  background: #ffffff;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.hero-product-link:hover,
.hero-product-link:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(19, 185, 148, 0.34);
  box-shadow: 0 14px 28px rgba(19, 185, 148, 0.14);
}

.hero-product-link span {
  display: grid;
  gap: 4px;
}

.hero-product-link strong {
  color: var(--foreground);
  font-size: 1.02rem;
}

.hero-product-link small {
  color: var(--muted);
  font-size: 0.84rem;
}

.hero-product-link b {
  flex: 0 0 auto;
  border-radius: 6px;
  padding: 6px 9px;
  background: #eefbf8;
  color: #087965;
  font-size: 0.78rem;
}

.hero-product-link--featured {
  border-color: rgba(245, 184, 77, 0.5);
  background: linear-gradient(135deg, #ffffff, #fff8e9);
}

.trust-band,
.section,
.contact {
  width: min(1180px, calc(100% - 40px));
  margin-right: auto;
  margin-left: auto;
}

.trust-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: -34px;
  position: relative;
  z-index: 3;
}

.trust-card,
.plan-card,
.step-card,
.review-card,
.receipt-panel,
.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.trust-card {
  min-height: 174px;
  padding: 24px;
}

.trust-card__icon {
  display: block;
  width: 34px;
  height: 6px;
  margin-bottom: 24px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--teal), var(--amber));
}

.trust-card h2,
.plan-card h3,
.step-card h3 {
  margin: 0;
  color: var(--foreground);
  font-size: 1.08rem;
}

.trust-card p,
.plan-card p,
.step-card p,
.review-card p,
.section__intro p,
.order-copy p,
.contact p,
.faq-list p {
  color: var(--muted);
  line-height: 1.72;
}

.trust-card p {
  margin: 12px 0 0;
  font-size: 0.94rem;
}

.section {
  padding: 96px 0 0;
}

.section__intro {
  max-width: 700px;
  margin-bottom: 34px;
}

.section__intro h2,
.order-copy h2,
.contact h2 {
  margin: 0;
  color: var(--foreground);
  font-size: 2.4rem;
  line-height: 1.18;
}

.section__intro p,
.order-copy p,
.contact p {
  margin: 16px 0 0;
  font-size: 1rem;
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.plan-card {
  position: relative;
  display: flex;
  min-height: 430px;
  flex-direction: column;
  padding: 26px;
}

.plan-card--featured {
  border-color: rgba(245, 184, 77, 0.74);
  background:
    linear-gradient(180deg, rgba(255, 248, 233, 0.9), rgba(255, 255, 255, 0) 38%),
    #ffffff;
}

.plan-card--featured::before {
  position: absolute;
  top: -1px;
  right: 24px;
  min-height: 30px;
  border-radius: 0 0 8px 8px;
  padding: 7px 11px 0;
  background: var(--amber);
  color: #2d2108;
  content: "主推";
  font-size: 0.78rem;
  font-weight: 900;
}

.plan-card__top span {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  border-radius: 6px;
  padding: 0 10px;
  background: #e7fbf6;
  color: #087965;
  font-size: 0.78rem;
  font-weight: 800;
}

.plan-card h3 {
  margin-top: 18px;
  font-size: 1.48rem;
}

.plan-card p {
  min-height: 56px;
  margin: 12px 0 0;
}

.plan-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.plan-card__meta span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  border: 1px solid #d7e7e3;
  border-radius: 6px;
  padding: 0 10px;
  background: #f8fffd;
  color: #405166;
  font-size: 0.84rem;
  font-weight: 800;
}

.price-row {
  display: flex;
  min-height: 78px;
  align-items: flex-end;
  gap: 12px;
  margin: 24px 0;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.price-row strong {
  color: var(--foreground);
  font-size: 1.9rem;
  line-height: 1;
}

.price-row span {
  padding-bottom: 4px;
  color: var(--muted);
  font-size: 0.92rem;
}

.plan-card ul {
  display: grid;
  gap: 12px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.plan-card li {
  position: relative;
  min-height: 24px;
  padding-left: 22px;
  color: #2f3b4a;
  line-height: 1.5;
}

.plan-card li::before {
  position: absolute;
  top: 0.5em;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--teal);
  content: "";
}

.plan-card .button {
  margin-top: auto;
}

.compare-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.42fr) minmax(0, 1fr);
  gap: 24px;
  padding: 30px;
  border: 1px solid #cdeae4;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(19, 185, 148, 0.11), rgba(63, 183, 238, 0.1)),
    #ffffff;
  box-shadow: var(--shadow);
}

.compare-panel__intro h2 {
  margin: 0;
  color: var(--foreground);
  font-size: 2rem;
  line-height: 1.2;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.compare-card {
  min-height: 182px;
  padding: 20px;
  border: 1px solid rgba(16, 32, 51, 0.08);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
}

.compare-card span {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  border-radius: 6px;
  padding: 0 10px;
  background: #eefbf8;
  color: #087965;
  font-size: 0.8rem;
  font-weight: 900;
}

.compare-card h3 {
  margin: 18px 0 0;
  color: var(--foreground);
  font-size: 1.08rem;
}

.compare-card p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.order-preview {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.75fr);
  align-items: center;
  gap: 42px;
}

.receipt-panel {
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(32, 199, 166, 0.08), rgba(255, 255, 255, 0)),
    #ffffff;
}

.receipt-panel__bar,
.code-box,
.progress-list {
  border-radius: 8px;
}

.receipt-panel__bar {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border: 1px solid #cdeae4;
  background: #f1fffb;
  color: var(--foreground);
}

.receipt-panel__bar strong {
  color: #087965;
}

.code-box {
  margin-top: 16px;
  padding: 22px;
  border: 1px dashed #98a7b7;
  background: #f8fafc;
}

.code-box span {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 0.86rem;
}

.code-box strong {
  overflow-wrap: anywhere;
  color: var(--foreground);
  font-family: var(--font-geist-mono), monospace;
  font-size: 1.18rem;
}

.progress-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 16px;
}

.progress-list span {
  display: grid;
  min-height: 54px;
  place-items: center;
  border: 1px solid #cdeae4;
  border-radius: 8px;
  background: #f0fffb;
  color: #0c7f6d;
  font-size: 0.88rem;
  font-weight: 800;
  text-align: center;
}

.step-grid,
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.step-card {
  min-height: 250px;
  padding: 28px;
}

.step-card span {
  display: block;
  margin-bottom: 48px;
  color: var(--coral);
  font-size: 2.4rem;
  font-weight: 900;
}

.step-card p {
  margin: 14px 0 0;
}

.reviews {
  padding-top: 84px;
}

.review-card {
  min-height: 248px;
  padding: 26px;
}

.review-card p {
  min-height: 124px;
  margin: 0;
  color: #2f3b4a;
}

.review-card div {
  display: grid;
  gap: 6px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.review-card strong {
  color: var(--foreground);
}

.review-card span {
  color: var(--muted);
  font-size: 0.88rem;
}

.faq {
  padding-bottom: 96px;
}

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

.faq-list details {
  box-shadow: none;
}

.faq-list summary {
  min-height: 64px;
  cursor: pointer;
  padding: 20px 56px 20px 22px;
  color: var(--foreground);
  font-weight: 800;
  list-style: none;
  position: relative;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  top: 20px;
  right: 22px;
  color: var(--teal);
  content: "+";
  font-size: 1.4rem;
  font-weight: 800;
  line-height: 1;
}

.faq-list details[open] summary::after {
  content: "-";
}

.faq-list p {
  margin: 0;
  padding: 0 22px 22px;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  margin-bottom: 28px;
  padding: 42px;
  border: 1px solid #cdeae4;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(19, 185, 148, 0.16), rgba(245, 184, 77, 0.13)),
    #ffffff;
  color: var(--foreground);
  box-shadow: var(--shadow);
}

.contact h2,
.contact p {
  color: var(--foreground);
}

.contact p {
  max-width: 680px;
  color: var(--muted);
}

.contact-actions {
  justify-content: flex-end;
  margin-top: 0;
}

@media (max-width: 920px) {
  .hero {
    min-height: 86svh;
  }

  .hero__overlay {
    background:
      linear-gradient(90deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.82)),
      linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(251, 253, 252, 0.94));
  }

  .nav-links {
    display: none;
  }

  .hero h1 {
    font-size: 3.6rem;
  }

  .hero__content {
    grid-template-columns: 1fr;
    padding-top: 74px;
  }

  .hero-products {
    max-width: 620px;
  }

  .trust-band,
  .plan-grid,
  .step-grid,
  .review-grid,
  .compare-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .order-preview,
  .contact,
  .compare-panel {
    grid-template-columns: 1fr;
  }

  .contact-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .site-nav,
  .hero__content,
  .trust-band,
  .section,
  .contact {
    width: min(100% - 28px, 1180px);
  }

  .site-nav {
    min-height: 66px;
  }

  .brand__mark {
    width: 36px;
    height: 36px;
  }

  .nav-cta {
    min-width: 88px;
    padding: 0 12px;
    font-size: 0.86rem;
  }

  .hero__content {
    padding: 58px 0 64px;
  }

  .hero h1 {
    font-size: 3rem;
  }

  .hero__lead {
    font-size: 1rem;
  }

  .hero__actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .hero__stats,
  .hero-products,
  .trust-band,
  .plan-grid,
  .step-grid,
  .review-grid,
  .compare-grid,
  .progress-list {
    grid-template-columns: 1fr;
  }

  .hero__stats div {
    min-height: 82px;
  }

  .trust-band {
    margin-top: -20px;
  }

  .section {
    padding-top: 72px;
  }

  .section__intro h2,
  .order-copy h2,
  .contact h2 {
    font-size: 2rem;
  }

  .plan-card,
  .step-card,
  .review-card,
  .trust-card,
  .receipt-panel {
    padding: 22px;
  }

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

  .price-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .compare-panel {
    padding: 22px;
  }

  .review-card p {
    min-height: auto;
  }

  .contact {
    padding: 28px;
  }
}