:root {
  --theme: #ff9800;
  --theme-deep: #f28705;
  --theme-soft: rgba(255, 152, 0, 0.14);
  --theme-fade: rgba(255, 152, 0, 0.24);
  --ink-strong: #172033;
  --ink: #42506b;
  --line: rgba(255, 152, 0, 0.16);
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --page: #fffaf4;
  --shadow: 0 16px 36px rgba(23, 32, 51, 0.07);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: 1120px;
  --hero-title-gap: 16px;
  --section-space: 30px;
  --section-space-lg: 42px;
  --card-padding: 18px;
  --copy-leading: 1.65;
  --title-leading: 1.18;
  --card-title-size: 1.04rem;
  --card-copy-size: 0.95rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink-strong);
  background:
    radial-gradient(circle at top left, rgba(255, 152, 0, 0.08), transparent 28%),
    radial-gradient(circle at 85% 15%, rgba(255, 152, 0, 0.08), transparent 22%),
    var(--page);
  line-height: var(--copy-leading);
  position: relative;
  overflow-x: hidden;
}

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

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

.page-bg {
  position: fixed;
  inset: auto;
  pointer-events: none;
  z-index: -1;
  filter: blur(12px);
}

.page-bg-a {
  top: 6rem;
  left: -5rem;
  width: 16rem;
  height: 16rem;
  background: radial-gradient(circle, rgba(255, 152, 0, 0.18), transparent 68%);
}

.page-bg-b {
  right: -3rem;
  bottom: 12rem;
  width: 14rem;
  height: 14rem;
  background: radial-gradient(circle, rgba(255, 152, 0, 0.14), transparent 70%);
}

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

.hero,
.section {
  padding: var(--section-space) 0;
}

.hero {
  padding-top: 22px;
  padding-bottom: 20px;
}

.hero-shell {
  display: grid;
  gap: 20px;
}

.hero .container {
  width: 100%;
  max-width: none;
}

.hero-copy {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.82));
  border: 1px solid rgba(255, 152, 0, 0.16);
  border-radius: 30px;
  padding: 30px 24px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
  width: 100%;
  margin: 0;
}

.hero-mark {
  font-size: 1.35rem;
  color: var(--theme-deep);
  margin-bottom: 12px;
}

.hero-copy::after {
  content: "";
  position: absolute;
  right: -54px;
  top: -48px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(255, 152, 0, 0.22), transparent 70%);
}

.hero-logo {
  width: min(100%, 210px);
  margin-bottom: 14px;
}

.hero h1,
.section-head h2,
.cta-shell h2 {
  margin: 0;
  letter-spacing: -0.03em;
}

.hero h1 {
  font-size: clamp(1.75rem, 5.8vw, 3.9rem);
  line-height: 1;
  text-align: center;
  color: var(--theme-deep);
}

.headline-top,
.headline-bottom {
  display: block;
  margin-inline: auto;
  text-align: center;
}

.headline-top {
  width: 100%;
  white-space: nowrap;
}

.headline-bottom {
  margin-top: var(--hero-title-gap);
}

.hero-kicker {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 0.95rem;
  line-height: 1.5;
}

.hero-text {
  margin: var(--hero-title-gap) 0 0;
  font-size: 1rem;
  color: var(--ink);
  max-width: 39rem;
  line-height: 1.72;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 18px;
  color: var(--ink);
  font-weight: 600;
}

.hero-meta span {
  position: relative;
}

.hero-meta span + span::before {
  content: "•";
  margin-right: 18px;
  color: rgba(66, 80, 107, 0.55);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-note {
  margin: 20px 0 0;
  font-size: 0.84rem;
  line-height: 1.5;
  color: rgba(66, 80, 107, 0.64);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.96rem;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

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

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--theme), var(--theme-deep));
  box-shadow: 0 14px 28px rgba(242, 135, 5, 0.24);
}

.button-secondary {
  border-color: rgba(255, 152, 0, 0.24);
  color: var(--theme-deep);
  background: rgba(255, 255, 255, 0.75);
}

.button-inline {
  min-height: 42px;
  padding-inline: 18px;
}

.plan-card,
.faq-item,
.service-card,
.selling-card {
  position: relative;
  overflow: hidden;
}

.section-shell {
  display: grid;
  gap: 18px;
  align-items: start;
}

.section-head {
  padding-top: 6px;
  position: relative;
}

.section-head h2 {
  font-size: clamp(1.35rem, 4.8vw, 2.3rem);
  line-height: var(--title-leading);
  padding-left: 18px;
  position: relative;
}

.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.14em;
  width: 6px;
  height: 1.05em;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--theme), var(--theme-deep));
}

.section-head p {
  margin: 12px 0 0 18px;
  color: var(--ink);
  font-size: 0.98rem;
  line-height: 1.65;
  max-width: 14em;
}

.section-body {
  min-width: 0;
}

.section-featured-wide .section-head {
  margin-bottom: 0;
}

.section-featured-wide .section-body {
  max-width: none;
  margin: 0;
}

.section-framed .section-body,
.section-cta .cta-shell {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 12% 16%, rgba(255, 152, 0, 0.13), transparent 28%),
    radial-gradient(circle at 82% 82%, rgba(255, 152, 0, 0.09), transparent 24%),
    var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.service-grid,
.plan-grid {
  display: grid;
  gap: 14px;
}

.service-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--card-padding);
  background: rgba(255, 255, 255, 0.72);
}

.service-card h3,
.selling-card h3,
.plan-card h3 {
  margin: 0 0 8px;
  font-size: var(--card-title-size);
  line-height: 1.4;
}

.service-card p,
.selling-card p,
.plan-card p,
.faq-item p {
  margin: 0;
  color: var(--ink);
  font-size: var(--card-copy-size);
  line-height: 1.68;
}

.selling-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 18px;
}

.selling-card {
  min-height: 148px;
  padding: 18px;
  border: 1px solid rgba(255, 152, 0, 0.15);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
}

.plan-card {
  border: 1px solid rgba(255, 152, 0, 0.18);
  border-radius: var(--radius-lg);
  padding: 20px;
  background:
    radial-gradient(circle at 100% 0%, rgba(255, 152, 0, 0.12), transparent 32%),
    rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow);
}

.plan-header {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.plan-title-wrap {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  flex: 1 1 auto;
}

.plan-flag {
  height: 42px;
  width: auto;
  flex: 0 0 auto;
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(23, 32, 51, 0.12);
}

.plan-title-wrap h3 {
  margin: 0;
}

.plan-badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  color: #fff;
  font-size: 0.88rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--theme), var(--theme-deep));
}

.plan-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.plan-grid div {
  padding: 11px 12px 11px 28px;
  border: 1px solid rgba(255, 152, 0, 0.14);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
}

.plan-feature {
  position: relative;
}

.plan-feature::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 18px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--theme), var(--theme-deep));
  box-shadow: 0 0 0 4px rgba(255, 152, 0, 0.12);
}

.plan-grid strong {
  display: block;
  margin-bottom: 3px;
  font-size: 0.95rem;
  line-height: 1.4;
}

.plan-grid p {
  font-size: 0.9rem;
  line-height: 1.55;
}

.plan-feature:nth-child(5) {
  grid-column: 1 / -1;
}

.section-framed .section-body {
  padding: 0;
}

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

.faq-item {
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    radial-gradient(circle at 88% 18%, rgba(255, 152, 0, 0.1), transparent 26%),
    rgba(255, 255, 255, 0.68);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 48px 18px 18px;
  font-weight: 700;
  line-height: 1.5;
  position: relative;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--theme-deep);
  font-size: 1.4rem;
  line-height: 1;
}

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

.faq-item p {
  padding: 0 18px 18px;
}

.section-cta {
  padding-bottom: 46px;
}

.cta-shell {
  padding: 34px 22px 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.section-cta .cta-shell {
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.18), transparent 26%),
    linear-gradient(135deg, #ffb84d, #ffa726 58%, #ffc86a);
  color: #fff;
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255, 152, 0, 0.28);
  min-height: 188px;
}

.section-cta .cta-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.06)),
    url("./logo1.png") no-repeat center / 85% auto;
  filter: blur(4px);
  opacity: 0.38;
  transform: scale(1.02);
  transform-origin: center;
  pointer-events: none;
}

.cta-shell h2,
.cta-shell p,
.cta-shell .button {
  position: relative;
  z-index: 1;
}

.cta-copy {
  position: relative;
  color: #fff;
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
}

.cta-copy .button-primary {
  display: inline-flex;
  min-width: 176px;
  position: static;
  transform: translateY(-8px);
  margin: 0;
  z-index: 2;
}

.cta-kicker {
  margin: 0;
  width: 100%;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  opacity: 0.95;
  color: rgba(255, 255, 255, 0.96);
}

.cta-shell p {
  margin: 12px auto 20px;
  max-width: 38rem;
  color: rgba(255, 255, 255, 0.9);
}

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

.cta-shell .button-primary {
  background: #ffffff;
  color: var(--theme-deep);
  box-shadow: 0 16px 28px rgba(134, 69, 0, 0.18);
}

@media (max-width: 767px) {
  :root {
    --hero-title-gap: 12px;
    --section-space: 26px;
    --card-padding: 16px;
    --card-title-size: 1rem;
    --card-copy-size: 0.93rem;
  }

  .hero h1 {
    font-size: clamp(1.28rem, 5.9vw, 2.4rem);
  }

  .headline-top {
    font-size: clamp(1.28rem, 5.9vw, 2.4rem);
  }

  .headline-bottom {
    font-size: clamp(1.28rem, 5.9vw, 2.4rem);
    margin-top: var(--hero-title-gap);
  }

  .hero-copy {
    text-align: center;
    padding: 28px 20px;
  }

  .hero-logo {
    margin-inline: auto;
  }

  .hero h1 {
    margin-inline: auto;
  }

  .hero-text {
    margin-inline: auto;
  }

  .section-head p {
    margin-top: 10px;
    max-width: none;
  }

  .selling-grid {
    gap: 10px;
    padding: 16px;
  }

  .selling-card {
    min-height: 136px;
    padding: 16px;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-meta {
    justify-content: center;
  }

  .hero-note {
    text-align: center;
  }

  .plan-header {
    flex-wrap: nowrap;
    align-items: flex-start;
    gap: 10px;
  }

  .plan-title-wrap {
    gap: 8px;
    min-width: 0;
  }

  .plan-title-wrap h3 {
    font-size: 0.96rem;
    line-height: 1.35;
  }

  .plan-flag {
    height: 36px;
  }

  .button-inline {
    min-height: 38px;
    padding-inline: 14px;
    font-size: 0.9rem;
    white-space: nowrap;
    flex: 0 0 auto;
  }

  .plan-card {
    padding: 18px;
  }

  .plan-grid {
    gap: 9px;
  }

  .plan-grid div {
    padding: 10px 10px 10px 26px;
  }

  .faq-item summary {
    padding: 16px 44px 16px 16px;
  }

  .faq-item p {
    padding: 0 16px 16px;
  }

  .cta-shell {
    padding: 30px 20px 26px;
  }

  .cta-copy .button-primary {
    min-width: 188px;
    transform: translateY(-4px);
  }
}

@media (min-width: 768px) {
  .hero,
  .section {
    padding: var(--section-space-lg) 0;
  }

  .hero-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-copy {
    padding: 42px;
    text-align: center;
    align-items: center;
  }

  .hero-logo,
  .hero h1,
  .hero-text {
    margin-inline: auto;
  }

  .hero-actions,
  .hero-meta {
    justify-content: center;
  }

  .section-shell {
    grid-template-columns: 176px minmax(0, 1fr);
    gap: 30px;
  }

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

  .plan-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 26px;
    row-gap: 12px;
  }

  .cta-shell {
    padding: 40px 28px 34px;
  }

  .cta-shell {
    text-align: center;
  }

  .cta-shell p {
    margin-inline: auto;
  }
}

@media (min-width: 1024px) {
  .selling-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    padding: 22px;
  }

  .hero-copy {
    min-height: 460px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .section-head h2 {
    max-width: 6em;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .button {
    transition: none;
  }
}