:root {
  --ink: #18211f;
  --muted: #5e6a66;
  --line: #d8ded4;
  --paper: #fffdf8;
  --warm: #f7f3ea;
  --mint: #dceee4;
  --green: #1f7a4d;
  --green-dark: #145e3b;
  --amber: #f6bd4b;
  --blue: #cfe6f7;
  --rose: #f3d6d0;
  --shadow: 0 18px 48px rgba(30, 43, 38, 0.13);
}

* {
  box-sizing: border-box;
}

html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 10;
  padding: 10px 14px;
  background: var(--ink);
  color: white;
  border-radius: 6px;
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 8;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(20px, 5vw, 72px);
  background: rgba(255, 253, 248, 0.92);
  border-bottom: 1px solid rgba(216, 222, 212, 0.8);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #fff;
  background: var(--green);
  border-radius: 8px;
  font-weight: 900;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 15px;
}

.nav a,
.footer-links a,
.text-link {
  text-decoration: none;
}

.nav a:hover,
.footer-links a:hover,
.text-link:hover {
  color: var(--green);
}

.nav-cta {
  padding: 10px 16px;
  color: white;
  background: var(--ink);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

section {
  padding: clamp(56px, 8vw, 96px) clamp(20px, 5vw, 72px);
  min-width: 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(320px, 0.94fr);
  align-items: center;
  gap: clamp(36px, 6vw, 88px);
  min-height: calc(100vh - 72px);
  padding-top: clamp(40px, 7vw, 84px);
  background:
    linear-gradient(135deg, rgba(220, 238, 228, 0.88), rgba(247, 243, 234, 0.78) 48%, rgba(207, 230, 247, 0.76)),
    var(--warm);
}

.hero-copy {
  max-width: 760px;
  min-width: 0;
}

.eyebrow,
.tag,
.plan,
.label {
  margin: 0 0 10px;
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 20px;
  font-size: 64px;
  line-height: 1.08;
  letter-spacing: 0;
  overflow-wrap: break-word;
}

h1 span {
  display: block;
}

h2 span,
.hero-lede span {
  display: block;
}

.hero-copy,
.section-heading,
.article-content,
.problem-grid article,
.product,
.price-card,
.lead-copy,
.lead-form,
.faq-list details {
  overflow-wrap: anywhere;
  word-break: break-word;
}

h2 {
  font-size: 40px;
  line-height: 1.14;
  letter-spacing: 0;
  overflow-wrap: break-word;
}

h3 {
  font-size: 20px;
  line-height: 1.25;
}

.hero-lede {
  max-width: 680px;
  color: #32413c;
  font-size: 21px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  color: white;
  background: var(--green);
}

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

.button.secondary {
  color: var(--ink);
  background: white;
  border-color: var(--line);
}

.button.secondary:hover {
  border-color: var(--green);
}

.full {
  width: 100%;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.trust-row span {
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(216, 222, 212, 0.86);
  border-radius: 999px;
  color: #354740;
  font-size: 14px;
  font-weight: 700;
}

.hero-visual {
  display: flex;
  justify-content: center;
  min-width: 0;
}

.hero-image {
  width: min(100%, 560px);
  height: auto;
  border: 1px solid rgba(24, 33, 31, 0.08);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.fallback-visual {
  display: none;
}

.tablet {
  width: min(100%, 520px);
  padding: 20px;
  background: #ffffff;
  border: 1px solid rgba(24, 33, 31, 0.08);
  border-radius: 8px;
  box-shadow: var(--shadow);
  transform: rotate(1deg);
}

.tablet-top {
  display: flex;
  gap: 6px;
  margin-bottom: 18px;
}

.tablet-top span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--rose);
}

.tablet-top span:nth-child(2) {
  background: var(--amber);
}

.tablet-top span:nth-child(3) {
  background: var(--mint);
}

.mission-card {
  padding: 24px;
  background: #f9faf4;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.mission-card h2 {
  margin-bottom: 12px;
  font-size: clamp(24px, 3vw, 36px);
}

.prompt-box {
  margin-top: 18px;
  padding: 16px;
  background: #fff;
  border: 1px solid #dbe2dc;
  border-left: 5px solid var(--green);
  border-radius: 6px;
  color: #31413b;
  font-weight: 700;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 14px;
}

.mini-grid span {
  display: grid;
  min-height: 64px;
  place-items: center;
  background: var(--mint);
  border-radius: 8px;
  font-weight: 800;
}

.mini-grid span:nth-child(2) {
  background: var(--blue);
}

.mini-grid span:nth-child(3) {
  background: #fae6ad;
}

.mini-grid span:nth-child(4) {
  background: var(--rose);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 30px;
}

.problem-section,
.pricing-section,
.faq-section {
  background: #fff;
}

.problem-grid,
.product-row,
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  min-width: 0;
}

.problem-grid article,
.product,
.price-card,
.lead-form,
.faq-list details {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.problem-grid article,
.product {
  padding: 24px;
}

.icon {
  display: inline-grid;
  width: 36px;
  height: 36px;
  margin-bottom: 16px;
  place-items: center;
  color: white;
  background: var(--green);
  border-radius: 8px;
  font-weight: 900;
}

.products-section,
.curriculum-section,
.lead-section,
.seo-content {
  background: var(--warm);
}

.product p,
.problem-grid p,
.curriculum-copy p,
.timeline p,
.price-card li,
.lead-copy p,
.seo-columns p,
.faq-list p,
.site-footer p,
.pricing-note {
  color: var(--muted);
}

.curriculum-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}

.curriculum-copy {
  position: sticky;
  top: 104px;
  min-width: 0;
}

.text-link {
  display: inline-flex;
  margin-top: 8px;
  color: var(--green-dark);
  font-weight: 900;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline div {
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.timeline span {
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
}

.price-card {
  display: flex;
  flex-direction: column;
  padding: 26px;
}

.price-card.featured {
  background: #f6fbf7;
  border: 2px solid var(--green);
  box-shadow: var(--shadow);
}

.price {
  margin: 10px 0 18px;
  font-size: 46px;
  font-weight: 900;
  line-height: 1;
}

.price span {
  margin-right: 4px;
  font-size: 20px;
}

.price-card ul {
  flex: 1;
  margin: 0 0 22px;
  padding-left: 20px;
}

.price-card li {
  margin: 8px 0;
}

.pricing-note {
  max-width: 860px;
  margin: 20px auto 0;
  text-align: center;
}

.lead-section {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 1.08fr);
  gap: clamp(28px, 6vw, 76px);
  align-items: center;
}

.lead-copy {
  max-width: 640px;
  min-width: 0;
}

.lead-form {
  display: grid;
  gap: 16px;
  padding: 24px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(24, 33, 31, 0.08);
}

.lead-form label {
  display: grid;
  gap: 8px;
  color: #34443f;
  font-weight: 800;
}

.lead-form input,
.lead-form select {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: #fff;
  font: inherit;
}

.lead-form input:focus,
.lead-form select:focus {
  outline: 3px solid rgba(31, 122, 77, 0.18);
  border-color: var(--green);
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--green-dark);
  font-weight: 800;
}

.seo-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  max-width: 1100px;
}

.resource-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.resource-links a {
  padding: 10px 14px;
  color: var(--green-dark);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 900;
  text-decoration: none;
}

.resource-links a:hover {
  border-color: var(--green);
}

.article-hero {
  min-height: auto;
  padding-top: 72px;
  padding-bottom: 56px;
  background: linear-gradient(135deg, rgba(220, 238, 228, 0.92), rgba(247, 243, 234, 0.9));
}

.article-hero h1 {
  max-width: 920px;
  font-size: 56px;
}

.article-hero p {
  max-width: 760px;
  color: #31413b;
  font-size: 20px;
}

.article-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  align-items: start;
  background: #fff;
}

.article-content {
  max-width: 860px;
}

.article-content h2 {
  margin-top: 34px;
  font-size: 34px;
}

.article-content h3 {
  margin-top: 24px;
}

.article-content p,
.article-content li {
  color: var(--muted);
}

.article-content li {
  margin: 8px 0;
}

.article-content a {
  color: var(--green-dark);
  font-weight: 800;
}

.article-aside {
  position: sticky;
  top: 100px;
  padding: 20px;
  background: var(--warm);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.article-aside a {
  display: block;
  margin-top: 10px;
}

.checklist {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.checklist-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  padding: 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.checklist-item strong {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: white;
  background: var(--green);
  border-radius: 8px;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 920px;
}

.faq-list details {
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 900;
}

.faq-list p {
  margin: 12px 0 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  padding: 34px clamp(20px, 5vw, 72px);
  background: #17221f;
  color: white;
}

.site-footer p,
.footer-links {
  margin: 8px 0 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: #dbe8df;
}

.footer-brand .brand-mark {
  background: var(--amber);
  color: var(--ink);
}

@media (max-width: 980px) {
  .nav {
    display: none;
  }

  .hero,
  .curriculum-section,
  .lead-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  h1 {
    font-size: 54px;
  }

  h2 {
    font-size: 34px;
  }

  .curriculum-copy {
    position: static;
  }

  .problem-grid,
  .product-row,
  .pricing-grid,
  .seo-columns,
  .article-body {
    grid-template-columns: 1fr;
  }

  .article-aside {
    position: static;
  }
}

@media (max-width: 620px) {
  .site-header {
    min-height: 64px;
    padding: 12px 16px;
    overflow: hidden;
  }

  .brand {
    font-size: 15px;
  }

  .nav-cta {
    width: 52px;
    min-width: 52px;
    padding: 9px 0;
    overflow: hidden;
    font-size: 0;
  }

  .nav-cta::after {
    content: "领取";
    font-size: 13px;
  }

  section {
    padding: 48px 14px;
  }

  h1 {
    font-size: 31px;
    line-height: 1.12;
  }

  h2 {
    font-size: 25px;
    line-height: 1.18;
  }

  .hero-lede {
    font-size: 17px;
    line-height: 1.62;
    overflow-wrap: anywhere;
  }

  .hero-lede span {
    display: block;
  }

  h1,
  h2,
  h3,
  p,
  li,
  a,
  span {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .hero-copy,
  .section-heading,
  .article-content,
  .problem-grid article,
  .product,
  .price-card,
  .lead-form,
  .faq-list details {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

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

  .trust-row span {
    text-align: center;
    white-space: normal;
  }

  .hero-image {
    width: 100%;
    max-width: 100%;
  }

  .hero-visual {
    overflow: hidden;
  }

  .article-hero h1 {
    font-size: 30px;
  }

  .article-hero p {
    font-size: 17px;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    min-width: 0;
    white-space: normal;
  }

  .tablet {
    padding: 14px;
    transform: none;
  }

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

  .site-footer {
    display: grid;
  }
}