:root {
  --bg: #fffaf5;
  --paper: #ffffff;
  --ink: #223028;
  --muted: #65716a;
  --green: #2f7d57;
  --green-dark: #1f5f42;
  --gold: #b69a58;
  --gold-soft: #fff3cf;
  --brand-ink: #6f6758;
  --orange: #d96f36;
  --blue-soft: #eaf5ff;
  --warm: #fff0df;
  --border: rgba(34, 48, 40, 0.13);
  --shadow: 0 20px 52px rgba(76, 52, 30, 0.13);
  --radius: 1.35rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 17px;
  overflow-x: hidden;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(180deg, rgba(255, 250, 245, 0.96), rgba(255, 250, 245, 0.88)),
    radial-gradient(circle at 12% 8%, rgba(255, 218, 128, 0.55), transparent 22rem),
    radial-gradient(circle at 88% 0%, rgba(234, 245, 255, 0.9), transparent 24rem),
    var(--bg);
  color: var(--ink);
  font-family:
    "PingFang SC",
    "Hiragino Sans GB",
    "Microsoft YaHei",
    "Noto Sans CJK SC",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.62;
  text-wrap: pretty;
}

img {
  max-width: 100%;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem clamp(1rem, 4vw, 3.5rem);
  background: rgba(255, 250, 245, 0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--brand-ink);
  font-weight: 780;
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0;
}

.brand-logo {
  width: 2.85rem;
  height: auto;
  display: block;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.28rem;
}

.top-nav a {
  padding: 0.42rem 0.72rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 780;
  text-decoration: none;
}

.top-nav a:hover,
.top-nav a:focus-visible,
.top-nav a[aria-current="true"] {
  background: rgba(47, 125, 87, 0.1);
  color: var(--green-dark);
}

.top-nav .language-link {
  background: var(--green-dark);
  color: #fff;
}

.section {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(3.4rem, 7vw, 5.8rem) 0;
}

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

h1 {
  max-width: 6em;
  margin-bottom: 1rem;
  font-size: clamp(2.5rem, 5vw, 4.35rem);
  line-height: 1.08;
  letter-spacing: 0;
  text-wrap: balance;
}

h2 {
  max-width: 14em;
  margin-bottom: 0.85rem;
  font-size: clamp(1.75rem, 3.25vw, 2.72rem);
  line-height: 1.16;
  letter-spacing: 0;
  text-wrap: balance;
}

h3 {
  margin-bottom: 0.38rem;
  font-size: 1.16rem;
  line-height: 1.25;
  text-wrap: balance;
}

.nowrap {
  white-space: nowrap;
}

.hero-headline {
  display: grid;
  gap: 0.08em;
}

.headline-line {
  display: block;
  white-space: nowrap;
}

.headline-pair {
  display: grid;
  grid-template-columns: 3.15em 1.05em;
  gap: 0.18em;
  align-items: baseline;
  width: min(4.4em, 100%);
}

.headline-pair span {
  text-align: right;
}

.headline-pair strong {
  color: var(--orange);
  font: inherit;
  text-align: center;
}

.en-headline {
  max-width: 10em;
  gap: 0.02em;
}

.en-headline span {
  display: block;
}

.break-line {
  display: block;
  margin-top: 0.2rem;
}

.soft-label {
  margin: 0 0 0.8rem;
  color: var(--green-dark);
  font-size: 0.78rem;
  font-weight: 920;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(21rem, 1.08fr);
  align-items: center;
  gap: clamp(2.2rem, 6vw, 4.5rem);
  min-height: clamp(34rem, 74vh, 46rem);
}

.hero-text,
.section-heading p,
.solution-copy span,
.scenario-card p,
.program-grid p,
.course-grid p,
.contact-card p,
.safety-list {
  color: var(--muted);
  font-size: 1.04rem;
}

.hero-actions,
.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.72rem;
}

.hero-actions {
  margin: 1.7rem 0 1.15rem;
}

.button {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.15rem;
  border: 2px solid transparent;
  border-radius: 999px;
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}

.button.primary {
  background: var(--green-dark);
  color: white;
  box-shadow: 0 16px 30px rgba(31, 95, 66, 0.22);
}

.button.secondary {
  background: var(--paper);
  border-color: var(--border);
  color: var(--green-dark);
}

.button.wide {
  width: 100%;
  margin-top: 0.7rem;
}

.trust-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.trust-list li {
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--green-dark);
  font-size: 0.88rem;
  font-weight: 840;
  white-space: nowrap;
}

.hero-media {
  position: relative;
  min-height: clamp(28rem, 46vw, 36rem);
  overflow: hidden;
  border: 1px solid rgba(34, 48, 40, 0.1);
  border-radius: 2rem;
  background: var(--gold-soft);
  box-shadow: var(--shadow);
}

.hero-media::after {
  position: absolute;
  inset: auto 0 0;
  height: 38%;
  background: linear-gradient(transparent, rgba(31, 95, 66, 0.78));
  content: "";
}

.hero-img,
.image-panel img,
.proof-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-img {
  position: absolute;
  inset: 0;
}

.hero-note {
  position: absolute;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 2;
  width: min(23rem, calc(100% - 2.2rem));
  padding: 1rem 1.05rem;
  border-radius: 1.2rem;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 14px 36px rgba(23, 38, 29, 0.18);
}

.hero-note span {
  display: block;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 820;
}

.hero-note strong {
  display: block;
  margin-top: 0.2rem;
  color: var(--green-dark);
  font-size: 1.32rem;
  line-height: 1.22;
}

.split-section {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(1.5rem, 5vw, 3rem);
  align-items: start;
}

#why {
  padding-top: clamp(5.2rem, 10vw, 8rem);
}

.section-heading {
  max-width: 48rem;
}

.section-heading.centered {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.scenario-grid,
.course-grid,
.program-grid,
.method-list,
.safety-list {
  display: grid;
  gap: 1rem;
}

.scenario-card,
.course-grid article,
.program-grid article,
.method-list div,
.safety-card,
.contact-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 34px rgba(76, 52, 30, 0.08);
}

.scenario-card,
.course-grid article,
.program-grid article,
.method-list div {
  padding: 1.2rem;
}

.scenario-kicker,
.course-grid span,
.program-grid span,
.price-strip span {
  display: block;
  color: var(--orange);
  font-size: 0.78rem;
  font-weight: 920;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.solution-section {
  display: grid;
  grid-template-columns: minmax(19rem, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(1.5rem, 5vw, 3rem);
  align-items: center;
}

.image-panel {
  position: relative;
  min-height: 29rem;
  overflow: hidden;
  border-radius: 2rem;
  background: linear-gradient(180deg, #eef7ee, #fffaf0);
  box-shadow: var(--shadow);
}

.practice-note {
  position: absolute;
  right: 1.2rem;
  bottom: 1.2rem;
  left: 1.2rem;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(182, 154, 88, 0.28);
  border-radius: 1.1rem;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 14px 30px rgba(76, 52, 30, 0.12);
}

.practice-note span {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--orange);
  font-size: 0.78rem;
  font-weight: 920;
  letter-spacing: 0.08em;
}

.practice-note strong {
  display: block;
  color: var(--green-dark);
  font-size: 1.15rem;
  line-height: 1.35;
}

.method-list div {
  display: grid;
  grid-template-columns: minmax(5.5rem, 0.28fr) 1fr;
  gap: 1rem;
  align-items: start;
}

.method-list strong {
  color: var(--green-dark);
  white-space: nowrap;
}

.en-method-list div {
  grid-template-columns: 1fr;
  gap: 0.25rem;
}

.en-method-list strong {
  white-space: normal;
}

.en-method-list span {
  font-size: 0.96rem;
  line-height: 1.48;
}

.proof-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.proof-item {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 0 12px 34px rgba(76, 52, 30, 0.08);
}

.proof-item-large {
  grid-column: span 2;
  grid-row: span 2;
}

.proof-item img {
  height: 13.5rem;
}

.proof-item-large img {
  height: 29rem;
}

.proof-item div {
  padding: 1rem;
}

.proof-item p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.course-section {
  border-radius: 2.2rem;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(255, 240, 223, 0.7));
}

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

.pricing-panel {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.pricing-panel div {
  padding: 1.2rem;
  border: 1px solid rgba(182, 154, 88, 0.28);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(255, 250, 240, 0.96), rgba(255, 255, 255, 0.88));
  box-shadow: 0 12px 34px rgba(76, 52, 30, 0.07);
}

.pricing-panel span {
  display: block;
  color: var(--orange);
  font-size: 0.78rem;
  font-weight: 920;
  letter-spacing: 0.08em;
}

.pricing-panel strong {
  display: block;
  margin: 0.1rem 0 0.2rem;
  color: var(--green-dark);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1;
}

.pricing-panel p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

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

.course-grid article p + p {
  margin-top: -0.35rem;
}

.course-label {
  margin-top: 2rem;
  text-align: center;
}

.price-strip {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.2rem;
  align-items: center;
  margin-top: 1rem;
  padding: 1.2rem;
  border-radius: var(--radius);
  background: var(--green-dark);
  color: #fff;
  overflow: hidden;
  position: relative;
}

.price-strip::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 0%, rgba(255, 255, 255, 0.14) 45%, transparent 70%);
  content: "";
  transform: translateX(-120%);
  animation: banner-sheen 5.5s ease-in-out infinite;
  pointer-events: none;
}

.price-strip strong {
  display: block;
  font-size: clamp(2.6rem, 6vw, 4rem);
  line-height: 1;
}

.price-strip p {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 780;
}

.price-strip .button.primary {
  min-width: 8.7rem;
  min-height: 3.7rem;
  padding: 0.95rem 1.45rem;
  background: var(--gold);
  color: var(--green-dark);
  font-size: 1.08rem;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.14);
  animation: cta-breathe 2.8s ease-in-out infinite;
  position: relative;
  z-index: 1;
}

@keyframes banner-sheen {
  0%,
  58% {
    transform: translateX(-120%);
  }

  78%,
  100% {
    transform: translateX(120%);
  }
}

@keyframes cta-breathe {
  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.035);
  }
}

.teacher-section {
  display: grid;
  grid-template-columns: minmax(11rem, 0.32fr) minmax(0, 1fr) minmax(16rem, 0.52fr);
  gap: clamp(1.2rem, 4vw, 2rem);
  align-items: center;
}

.teacher-photo {
  width: min(12.5rem, 100%);
  aspect-ratio: 1;
  height: auto;
  max-width: 100%;
  justify-self: center;
  overflow: hidden;
  border-radius: 50%;
  background: var(--gold-soft);
  box-shadow: 0 18px 44px rgba(76, 52, 30, 0.16);
}

.teacher-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.teacher-note {
  display: grid;
  align-content: center;
  gap: 0.8rem;
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 1px solid rgba(182, 154, 88, 0.34);
  border-radius: var(--radius);
  background: linear-gradient(145deg, #fffaf0, #ffffff);
  box-shadow: 0 12px 34px rgba(76, 52, 30, 0.08);
}

.teacher-note strong {
  color: var(--brand-ink);
  font-size: 1.2rem;
}

.teacher-note span {
  color: var(--muted);
}

.contact-section {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.2rem;
  align-items: stretch;
}

.safety-card,
.contact-card {
  padding: clamp(1.25rem, 4vw, 2rem);
}

.safety-list {
  padding: 0;
  margin: 1.2rem 0 0;
  list-style: none;
}

.safety-list li {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.safety-list li:last-child {
  border-bottom: none;
}

.contact-card {
  background: linear-gradient(145deg, #ffffff, #f1fbf5);
}

.contact-methods {
  margin: 1.1rem 0;
  padding: 1rem;
  border-radius: 1rem;
  background: rgba(31, 95, 66, 0.06);
}

.contact-methods p {
  margin: 0.25rem 0;
  color: var(--ink);
}

.site-footer {
  padding: 2rem 1rem;
  text-align: center;
  background: #253229;
}

.site-footer p {
  max-width: 60rem;
  margin: 0.25rem auto;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.9rem;
}

.site-footer .footer-brand {
  color: #fff;
  font-weight: 820;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  align-items: center;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.92);
  font-weight: 800;
  text-decoration: none;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  text-decoration: underline;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .top-nav {
    justify-content: flex-start;
  }

  .hero,
  .split-section,
  .solution-section,
  .teacher-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .proof-gallery,
  .program-grid,
  .pricing-panel,
  .course-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .price-strip {
    grid-template-columns: 1fr;
  }

  .teacher-photo {
    width: 12rem;
  }
}

@media (max-width: 640px) {
  html {
    font-size: 16px;
  }

  .section {
    width: min(100% - 1rem, 1120px);
  }

  .hero-media,
  .image-panel {
    min-height: 24rem;
    border-radius: 1.25rem;
  }

  .teacher-photo {
    width: 10.5rem;
  }

  .hero-headline {
    font-size: clamp(2.35rem, 13vw, 3.35rem);
  }

  .proof-gallery,
  .program-grid,
  .pricing-panel,
  .course-grid {
    grid-template-columns: 1fr;
  }

  .proof-item-large {
    grid-column: auto;
    grid-row: auto;
  }

  .proof-item-large img,
  .proof-item img {
    height: 14rem;
  }

  .method-list div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

/* ============================================================