:root {
  color-scheme: light;
  --bg: #f7f5ef;
  --surface: #ffffff;
  --surface-soft: #f1f6ef;
  --ink: #17231b;
  --muted: #657067;
  --green: #237d47;
  --green-dark: #155e35;
  --green-soft: #e3efe2;
  --orange: #dc9417;
  --orange-soft: #fff3d9;
  --line: #d8ddd5;
  --shadow: 0 18px 48px rgba(26, 55, 36, 0.1);
  font-family:
    "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
}

button,
a {
  font: inherit;
}

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

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

.section-inner,
.header-inner,
.hero-inner {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(216, 221, 213, 0.9);
  background: rgba(247, 245, 239, 0.96);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
  color: var(--green-dark);
  font-size: 24px;
  font-weight: 800;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 8px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-weight: 600;
}

.site-nav a,
.footer-links a {
  transition: color 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--green);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-membership,
.header-login {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 6px;
  font-weight: 700;
  white-space: nowrap;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.header-membership {
  border: 1px solid var(--orange);
  color: var(--ink);
  background: var(--orange);
  box-shadow: 0 8px 20px rgba(220, 148, 23, 0.18);
}

.header-login {
  border: 1px solid var(--green);
  color: var(--green-dark);
}

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

.hero {
  padding: 68px 0 76px;
  overflow: hidden;
}

.hero-inner {
  min-height: 640px;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(520px, 1.12fr);
  align-items: start;
  gap: 64px;
}

.trial-label,
.section-kicker {
  margin: 0 0 16px;
  color: var(--orange);
  font-size: 15px;
  font-weight: 800;
}

.hero h1 {
  margin: 0;
  color: var(--green-dark);
  font-size: clamp(64px, 7vw, 98px);
  line-height: 1.05;
  letter-spacing: 0;
}

.hero-title {
  margin: 22px 0 14px;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  line-height: 1.25;
}

.hero-description {
  max-width: 560px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.access-actions {
  display: grid;
  gap: 12px;
  margin-top: 34px;
}

.access-button {
  min-height: 74px;
  display: grid;
  grid-template-columns: 82px 1fr;
  align-items: center;
  column-gap: 14px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.access-button:hover,
.access-button:focus-visible {
  transform: translateY(-2px);
  border-color: var(--green);
  box-shadow: 0 12px 24px rgba(29, 91, 52, 0.1);
}

.access-button.primary {
  border-color: var(--green);
  color: #fff;
  background: var(--green);
}

.access-platform {
  grid-row: 1 / span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
  border-right: 1px solid rgba(101, 112, 103, 0.24);
  color: var(--green);
  font-family: "Times New Roman", serif;
  font-weight: 700;
}

.primary .access-platform {
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
}

.access-button strong {
  align-self: end;
  font-size: 17px;
}

.access-button small {
  align-self: start;
  color: var(--muted);
}

.access-button.primary small {
  color: rgba(255, 255, 255, 0.78);
}

.hero-product {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  transform: rotate(0.4deg);
}

.hero-product img {
  width: 100%;
  border-radius: 4px;
}

.trust-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.trust-grid span {
  padding: 22px 18px;
  color: var(--green-dark);
  text-align: center;
  font-weight: 700;
}

.trust-grid span + span {
  border-left: 1px solid var(--line);
}

.features {
  padding: 104px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 64px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.2;
}

.feature-heading {
  max-width: none;
}

.feature-heading h2 {
  font-size: clamp(34px, 3.6vw, 50px);
  white-space: nowrap;
}

.section-heading > p:last-child {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.feature-row {
  min-height: 430px;
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  align-items: center;
  gap: 76px;
  padding: 64px 0;
  border-top: 1px solid var(--line);
}

.feature-row.reverse {
  grid-template-columns: 1.18fr 0.82fr;
}

.feature-row.reverse .feature-copy {
  order: 2;
}

.feature-number {
  display: block;
  margin-bottom: 20px;
  color: var(--orange);
  font-family: "Times New Roman", serif;
  font-size: 20px;
  font-weight: 700;
}

.feature-copy h3,
.export-band h3 {
  margin: 0;
  color: var(--green-dark);
  font-size: 32px;
  line-height: 1.3;
}

.feature-copy p,
.export-band p {
  color: var(--muted);
  font-size: 17px;
}

.feature-copy ul {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.feature-copy li {
  position: relative;
  padding: 8px 0 8px 26px;
  font-weight: 600;
}

.feature-copy li::before {
  position: absolute;
  top: 17px;
  left: 2px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--orange);
  content: "";
}

.feature-media {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 16px 36px rgba(26, 55, 36, 0.08);
}

.feature-media img {
  width: 100%;
  border-radius: 4px;
  transition: transform 420ms ease;
}

.feature-media:hover img {
  transform: scale(1.012);
}

.export-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  margin-top: 48px;
  padding: 44px 48px;
  border: 1px solid #b9cfba;
  border-radius: 8px;
  background: var(--surface-soft);
}

.export-band div {
  max-width: 720px;
}

.export-band a {
  flex: 0 0 auto;
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 26px;
  border-radius: 6px;
  color: #fff;
  background: var(--green);
  font-weight: 700;
}

.membership-section {
  padding: 104px 0 112px;
  border-top: 1px solid var(--line);
  background: #fffdfa;
}

.membership-heading {
  max-width: 820px;
  margin-bottom: 48px;
}

.membership-heading h2 {
  text-wrap: balance;
}

.membership-stage-notice {
  margin: 0 0 28px;
  padding: 18px 20px;
  border: 1px solid #e8c67e;
  border-left: 4px solid var(--orange);
  border-radius: 12px;
  color: #68460b;
  background: #fff5dd;
}

.membership-stage-notice strong {
  display: block;
  margin-bottom: 4px;
  color: #7c5007;
}

.membership-stage-notice p {
  margin: 0;
  line-height: 1.7;
}

.membership-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 24px;
}

.membership-price-card,
.membership-benefits {
  border-radius: 8px;
}

.membership-price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 38px 40px 36px;
  overflow: hidden;
  color: #fff;
  background: var(--green-dark);
  box-shadow: 0 22px 52px rgba(21, 94, 53, 0.18);
}

.membership-price-card::after {
  position: absolute;
  right: -82px;
  bottom: -118px;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  box-shadow: 0 0 0 42px rgba(255, 255, 255, 0.04);
  content: "";
  pointer-events: none;
}

.membership-plan-name {
  position: relative;
  z-index: 1;
  margin: 0 0 12px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  font-weight: 700;
}

.membership-price {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-variant-numeric: tabular-nums;
}

.membership-price strong {
  font-family: "Times New Roman", serif;
  font-size: clamp(72px, 8vw, 104px);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -4px;
}

.membership-price span {
  font-size: 24px;
  font-weight: 700;
}

.membership-period {
  position: relative;
  z-index: 1;
  margin: 12px 0 0;
  color: #f5c66f;
  font-size: 18px;
  font-weight: 700;
}

.membership-store-note {
  position: relative;
  z-index: 1;
  max-width: 420px;
  margin: 30px 0 24px;
  color: rgba(255, 255, 255, 0.8);
}

.membership-cta {
  position: relative;
  z-index: 1;
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 30px;
  border-radius: 6px;
  color: var(--green-dark);
  background: #fff;
  font-weight: 800;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

.membership-cta:hover,
.membership-cta:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(8, 49, 26, 0.24);
}

.membership-cta:active {
  transform: translateY(1px);
}

.membership-price-card small {
  position: relative;
  z-index: 1;
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.6;
}

.membership-benefits {
  padding: 40px 42px;
  border: 1px solid #b9cfba;
  background: var(--surface-soft);
}

.membership-benefit-label {
  margin: 0 0 8px;
  color: var(--orange);
  font-size: 15px;
  font-weight: 800;
}

.membership-cta::after {
  margin-left: 10px;
  content: "→";
}

.membership-benefits h3 {
  max-width: 520px;
  margin: 0;
  color: var(--green-dark);
  font-size: 30px;
  line-height: 1.35;
  text-wrap: balance;
}

.membership-benefits ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 24px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.membership-benefits li {
  position: relative;
  min-height: 64px;
  display: flex;
  align-items: center;
  padding: 12px 0 12px 30px;
  border-top: 1px solid rgba(35, 125, 71, 0.18);
  font-weight: 600;
}

.membership-benefits li::before {
  position: absolute;
  left: 2px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  color: #fff;
  background: var(--green);
  content: "✓";
  font-size: 12px;
  font-weight: 800;
  line-height: 17px;
  text-align: center;
}

.membership-rule-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.membership-rule {
  padding: 26px 24px 28px;
  border-top: 3px solid var(--green);
  border-radius: 0 0 8px 8px;
  background: var(--surface);
}

.membership-rule > span {
  color: var(--orange);
  font-family: "Times New Roman", serif;
  font-size: 16px;
  font-weight: 700;
}

.membership-rule h3 {
  margin: 8px 0 10px;
  color: var(--green-dark);
  font-size: 21px;
}

.membership-rule p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
  text-wrap: pretty;
}

.membership-support {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 22px;
  padding: 20px 24px;
  border-left: 4px solid var(--orange);
  background: var(--orange-soft);
  color: #70531b;
}

.membership-support p {
  margin: 0;
}

.membership-support strong {
  margin-right: 8px;
}

.membership-support a {
  flex: 0 0 auto;
  color: var(--green-dark);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.guide-section {
  padding: 96px 0;
  border-top: 1px solid var(--line);
  background: #fffdfa;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.guide-card {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.guide-card > span {
  color: var(--orange);
  font-size: 14px;
  font-weight: 800;
}

.guide-card h3 {
  margin: 8px 0 14px;
  font-size: 24px;
}

.guide-card ol {
  min-height: 150px;
  margin: 0;
  padding-left: 22px;
  color: var(--muted);
}

.guide-card li {
  padding: 5px 0;
}

.guide-card a {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 22px;
  border: 1px solid var(--green);
  border-radius: 6px;
  color: var(--green-dark);
  font-weight: 700;
}

.guide-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.guide-links a {
  min-height: 110px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 24px 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.guide-links span {
  color: var(--muted);
  font-size: 14px;
}

.guide-links strong {
  color: var(--green-dark);
  font-size: 22px;
}

.migration-note {
  margin: 28px 0 0;
  padding: 16px 18px;
  border-left: 4px solid var(--orange);
  background: var(--orange-soft);
  color: #70531b;
}

.site-footer {
  padding: 44px 0;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 44px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-brand img {
  width: 48px;
  height: 48px;
  border-radius: 8px;
}

.footer-brand div,
.support {
  display: grid;
}

.footer-brand strong {
  color: var(--green-dark);
  font-size: 20px;
}

.footer-brand span,
.support,
.footer-links {
  color: var(--muted);
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 22px;
}

.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 620ms ease,
    transform 620ms cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-ready [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-ready .guide-grid .guide-card:nth-child(2) {
  transition-delay: 80ms;
}

.reveal-ready .guide-grid .guide-card:nth-child(3) {
  transition-delay: 160ms;
}

@media (max-width: 900px) {
  .site-nav {
    display: none;
  }

  .hero {
    padding-top: 44px;
  }

  .hero-inner,
  .feature-row,
  .feature-row.reverse,
  .membership-layout {
    grid-template-columns: 1fr;
  }

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

  .hero-inner {
    gap: 44px;
  }

  .hero-product {
    transform: none;
  }

  .feature-row.reverse .feature-copy {
    order: 0;
  }

  .feature-heading h2 {
    white-space: normal;
  }

  .trust-grid,
  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .trust-grid span:nth-child(3) {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .trust-grid span:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .guide-card:last-child {
    grid-column: 1 / -1;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-links {
    grid-column: 1 / -1;
  }
}

@media (max-width: 620px) {
  .section-inner,
  .header-inner,
  .hero-inner {
    width: min(100% - 28px, 1180px);
  }

  .header-inner {
    min-height: 66px;
    gap: 14px;
  }

  .brand {
    font-size: 20px;
  }

  .brand img {
    width: 36px;
    height: 36px;
  }

  .header-actions {
    gap: 8px;
  }

  .header-membership,
  .header-login {
    min-height: 40px;
    padding: 0 13px;
    font-size: 14px;
  }

  .hero {
    padding: 36px 0 52px;
  }

  .hero-inner {
    min-height: auto;
  }

  .hero h1 {
    font-size: 58px;
  }

  .hero-title {
    font-size: 27px;
  }

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

  .access-button {
    grid-template-columns: 70px 1fr;
    padding: 11px 14px;
  }

  .access-button strong {
    font-size: 16px;
  }

  .access-button small {
    font-size: 12px;
  }

  .trust-grid,
  .guide-grid,
  .guide-links,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .trust-grid span + span {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .features,
  .membership-section,
  .guide-section {
    padding: 68px 0;
  }

  .membership-price-card,
  .membership-benefits {
    padding: 30px 24px;
  }

  .membership-stage-notice {
    padding: 16px;
  }

  .membership-benefits ul,
  .membership-rule-grid {
    grid-template-columns: 1fr;
  }

  .membership-cta {
    width: 100%;
  }

  .membership-support {
    display: grid;
    padding: 18px 18px;
  }

  .section-heading {
    margin-bottom: 36px;
  }

  .section-heading h2 {
    font-size: 34px;
  }

  .feature-row,
  .feature-row.reverse {
    min-height: 0;
    gap: 30px;
    padding: 44px 0;
  }

  .feature-copy h3,
  .export-band h3 {
    font-size: 27px;
  }

  .export-band {
    display: grid;
    padding: 28px 22px;
  }

  .guide-card:last-child {
    grid-column: auto;
  }

  .guide-card {
    padding: 24px 20px;
  }

  .guide-card ol {
    min-height: 0;
  }

  .footer-links {
    grid-column: auto;
  }
}

@media (max-width: 380px) {
  .header-inner {
    gap: 8px;
  }

  .brand {
    gap: 7px;
    font-size: 18px;
  }

  .brand img {
    width: 32px;
    height: 32px;
  }

  .header-actions {
    gap: 6px;
  }

  .header-membership,
  .header-login {
    padding: 0 10px;
    font-size: 13px;
  }
}

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

  .access-button {
    transition: none;
  }

  .feature-media img,
  .reveal-ready [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}