:root {
  --ink: #16202a;
  --muted: #586575;
  --paper: #fbfcfb;
  --line: #dfe6e7;
  --teal: #1f7a78;
  --teal-deep: #115150;
  --coral: #d8664c;
  --gold: #b99249;
  --mist: #edf6f5;
  --white: #ffffff;
  --shadow: 0 18px 55px rgba(22, 32, 42, 0.14);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
}

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 72px;
  padding: 12px clamp(18px, 4vw, 56px);
  background: rgba(251, 252, 251, 0.9);
  border-bottom: 1px solid rgba(223, 230, 231, 0.8);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 188px;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--white);
  background: linear-gradient(135deg, var(--teal), var(--coral));
  border-radius: 8px;
  font-weight: 800;
  font-size: 22px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
  line-height: 1.2;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(12px, 2vw, 28px);
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover {
  color: var(--teal-deep);
}

.nav-cta,
.button,
.copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  padding: 0 18px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.nav-cta,
.button.primary,
.copy-button {
  color: var(--white);
  background: var(--teal);
  box-shadow: 0 10px 24px rgba(31, 122, 120, 0.22);
}

.nav-cta:hover,
.button.primary:hover,
.copy-button:hover {
  transform: translateY(-1px);
  background: var(--teal-deep);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: 120px clamp(20px, 6vw, 78px) 44px;
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(251, 252, 251, 0.96) 0%, rgba(251, 252, 251, 0.9) 30%, rgba(251, 252, 251, 0.55) 55%, rgba(251, 252, 251, 0.12) 100%),
    linear-gradient(180deg, rgba(251, 252, 251, 0.15), rgba(251, 252, 251, 0.84));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(840px, 100%);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--coral);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 20px;
  font-size: clamp(38px, 5vw, 68px);
  line-height: 1.05;
  letter-spacing: 0;
}

h1 span {
  display: block;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.15;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
  line-height: 1.25;
}

.hero-lede {
  width: min(680px, 100%);
  color: #384553;
  font-size: clamp(17px, 2vw, 21px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0;
}

.button {
  min-width: 190px;
}

.button.secondary {
  color: var(--teal-deep);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(31, 122, 120, 0.22);
}

.button.secondary:hover {
  transform: translateY(-1px);
  background: var(--white);
  box-shadow: var(--shadow);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  width: min(660px, 100%);
  margin: 34px 0 0;
}

.hero-stats div {
  padding: 18px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(223, 230, 231, 0.9);
  border-radius: 8px;
  box-shadow: 0 10px 26px rgba(22, 32, 42, 0.08);
}

.hero-stats dt {
  font-weight: 900;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1;
}

.hero-stats dd {
  margin: 8px 0 0;
  color: var(--muted);
}

.section {
  padding: clamp(64px, 9vw, 116px) clamp(20px, 6vw, 78px);
}

.section-heading {
  width: min(720px, 100%);
  margin-bottom: 34px;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: start;
}

.intro-copy {
  color: #354150;
  font-size: 18px;
}

.intro-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.intro-points span,
.course-meta {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  color: var(--teal-deep);
  background: #e1f1ef;
  border: 1px solid rgba(31, 122, 120, 0.16);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
}

.profile-panel {
  display: grid;
  gap: 12px;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.teacher-card {
  margin: 0 0 4px;
}

.teacher-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: 62% 45%;
  border-radius: 8px;
}

.teacher-card figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.credential-card img {
  aspect-ratio: 16 / 10;
  object-position: center;
}

.profile-item {
  padding: 18px;
  border-radius: 8px;
  background: var(--mist);
}

.profile-item span {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.profile-item strong {
  display: block;
  margin-top: 6px;
  font-size: 20px;
}

.audience-section {
  background: #f7faf9;
}

.audience-grid,
.delivery-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.audience-grid article,
.delivery-grid article {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 36px rgba(22, 32, 42, 0.07);
}

.audience-grid h3,
.delivery-grid strong {
  display: block;
  color: var(--teal-deep);
}

.audience-grid p,
.delivery-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.gallery-section {
  background: #f7faf9;
}

.photo-layout {
  display: grid;
  grid-template-columns: minmax(280px, 1.1fr) repeat(2, minmax(0, 0.75fr));
  grid-auto-rows: minmax(250px, auto);
  gap: 18px;
}

.photo-slot {
  display: grid;
  gap: 12px;
  margin: 0;
}

.photo-slot img,
.feedback-grid img,
.feedback-highlight img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}

.real-gallery {
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  grid-auto-rows: 315px;
}

.real-gallery .photo-slot {
  min-height: 0;
}

.real-gallery .photo-slot img {
  min-height: 0;
  box-shadow: 0 14px 36px rgba(22, 32, 42, 0.1);
}

.wide-slot {
  grid-row: span 2;
}

.wide-slot img {
  object-position: center top;
}

.real-gallery .photo-slot:nth-child(2) img {
  object-position: center top;
}

.real-gallery .photo-slot:nth-child(3) img {
  object-position: center;
}

.real-gallery .photo-slot:nth-child(4) img {
  object-position: center 40%;
}

.portrait-slot {
  grid-row: span 2;
}

.slot-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 250px;
  height: 100%;
  overflow: hidden;
  color: var(--teal-deep);
  background:
    linear-gradient(135deg, rgba(31, 122, 120, 0.16), rgba(216, 102, 76, 0.14)),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.62) 0 14px, rgba(255, 255, 255, 0.22) 14px 28px);
  border: 1px dashed rgba(31, 122, 120, 0.42);
  border-radius: 8px;
}

.portrait-slot .slot-visual {
  min-height: 560px;
}

.slot-visual span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  min-height: 42px;
  padding: 0 18px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(31, 122, 120, 0.18);
  border-radius: 8px;
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(22, 32, 42, 0.08);
}

.photo-slot figcaption {
  color: var(--muted);
  font-size: 15px;
}

.achievements-section {
  color: var(--white);
  background: linear-gradient(135deg, #123d3c, #1f7a78 54%, #bd5c46);
}

.achievements-section .eyebrow,
.achievements-section .section-heading p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.82);
}

.achievement-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

.achievement-grid article {
  min-height: 170px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 22px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  backdrop-filter: blur(12px);
}

.achievement-grid strong {
  display: block;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1;
  letter-spacing: 0;
}

.achievement-grid span {
  display: block;
  color: rgba(255, 255, 255, 0.86);
  font-weight: 700;
  line-height: 1.35;
}

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

.achievement-group {
  padding: 24px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  backdrop-filter: blur(12px);
}

.group-heading {
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.group-heading span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 0 10px;
  margin-bottom: 12px;
  color: #123d3c;
  background: rgba(255, 255, 255, 0.86);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 800;
}

.group-heading strong {
  display: block;
  font-size: 24px;
  line-height: 1.25;
}

.achievement-group ul {
  display: grid;
  gap: 16px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.achievement-group li b,
.achievement-group li span {
  display: block;
}

.achievement-group li b {
  color: var(--white);
  font-size: 17px;
}

.achievement-group li span {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.55;
}

.tinted {
  background:
    linear-gradient(180deg, rgba(237, 246, 245, 0.78), rgba(251, 252, 251, 0.92)),
    var(--mist);
}

.course-grid,
.strength-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.course-card,
.strength-grid article {
  min-height: 100%;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 36px rgba(22, 32, 42, 0.08);
}

.card-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  color: var(--teal-deep);
  background: #e1f1ef;
  border-radius: 8px;
  font-weight: 900;
}

.course-card p,
.strength-grid p,
.process p,
.domain-note p,
.contact-copy p {
  color: var(--muted);
}

.course-meta {
  margin: 6px 0 4px;
}

.course-card ul {
  padding-left: 18px;
  margin: 18px 0 0;
  color: #384553;
}

.course-card li + li {
  margin-top: 8px;
}

.split {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(28px, 6vw, 80px);
  align-items: start;
}

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

.method-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  align-items: start;
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 5px solid var(--gold);
  border-radius: 8px;
}

.method-row strong {
  color: var(--teal-deep);
}

.method-row span {
  color: var(--muted);
}

.system-section {
  background: #fbfcfb;
}

.system-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: clamp(24px, 5vw, 58px);
  align-items: end;
  margin-bottom: 30px;
}

.system-note {
  padding: 24px;
  color: var(--white);
  background: var(--teal-deep);
  border-radius: 8px;
  box-shadow: 0 14px 36px rgba(22, 32, 42, 0.12);
}

.system-note strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

.system-note p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.84);
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.system-grid article {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.system-grid span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 10px;
  margin-bottom: 18px;
  color: var(--coral);
  background: #fff0ec;
  border-radius: 8px;
  font-weight: 900;
}

.system-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.delivery-section {
  background: #f7faf9;
}

.strength-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.strength-grid article {
  box-shadow: none;
}

.process-section {
  background: #f7faf9;
}

.process {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  counter-reset: step;
}

.process div {
  position: relative;
  min-height: 230px;
  padding: 26px 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.process span {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-bottom: 22px;
  color: var(--white);
  background: var(--coral);
  border-radius: 50%;
  font-weight: 900;
}

.process strong {
  display: block;
  margin-bottom: 10px;
  font-size: 20px;
}

.feedback-section {
  background: #f7faf9;
}

.feedback-highlight {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1.2fr);
  gap: clamp(24px, 5vw, 58px);
  align-items: center;
  margin-bottom: 22px;
}

.feedback-copy {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 36px rgba(22, 32, 42, 0.08);
  font-size: 18px;
}

.feedback-copy p {
  color: #354150;
}

.feedback-copy p:last-child {
  margin-bottom: 0;
}

.feedback-highlight figure,
.feedback-grid figure {
  margin: 0;
}

.feedback-highlight img {
  aspect-ratio: 16 / 10;
  object-position: center;
  box-shadow: 0 14px 36px rgba(22, 32, 42, 0.1);
}

.feedback-highlight figcaption,
.feedback-grid figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 15px;
}

.feedback-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feedback-grid figure {
  padding: 12px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.feedback-grid img {
  aspect-ratio: 4 / 5;
  object-position: center top;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: clamp(28px, 6vw, 80px);
  align-items: center;
  padding: clamp(64px, 9vw, 116px) clamp(20px, 6vw, 78px);
  color: var(--white);
  background: linear-gradient(135deg, #123d3c, #1f7a78 58%, #bd5c46);
}

.contact-section .eyebrow,
.contact-copy p {
  color: rgba(255, 255, 255, 0.82);
}

.consult-box {
  display: grid;
  gap: 6px;
  margin-top: 24px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
}

.consult-box strong {
  color: var(--white);
}

.consult-box span {
  color: rgba(255, 255, 255, 0.82);
}

.contact-card {
  display: grid;
  gap: 16px;
  padding: 26px;
  color: var(--ink);
  background: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.contact-card div {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.contact-card span {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.contact-card a,
.contact-card strong {
  display: block;
  margin-top: 6px;
  color: var(--ink);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.copy-button {
  width: 100%;
}


.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 26px clamp(20px, 6vw, 78px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.site-footer a {
  color: var(--teal-deep);
  font-weight: 700;
}

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

  .hero {
    min-height: auto;
    padding-top: 112px;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(251, 252, 251, 0.97), rgba(251, 252, 251, 0.76)),
      linear-gradient(180deg, rgba(251, 252, 251, 0.22), rgba(251, 252, 251, 0.94));
  }

  .intro-grid,
  .split,
  .system-intro,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .audience-grid,
  .course-grid,
  .strength-grid,
  .process,
  .photo-layout,
  .achievement-grid,
  .achievement-groups,
  .system-grid,
  .delivery-grid,
  .feedback-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .real-gallery {
    grid-auto-rows: 300px;
  }

  .portrait-slot {
    grid-row: auto;
  }

  .portrait-slot .slot-visual {
    min-height: 320px;
  }

  .feedback-highlight {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    min-height: 64px;
    padding: 10px 14px;
  }

  .brand {
    min-width: 0;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 20px;
  }

  .brand small,
  .nav-cta {
    display: none;
  }

  .hero {
    padding: 96px 18px 36px;
  }

  h1 {
    font-size: 40px;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
    min-width: 0;
  }

  .hero-stats,
  .audience-grid,
  .course-grid,
  .strength-grid,
  .process,
  .photo-layout,
  .achievement-grid,
  .achievement-groups,
  .system-grid,
  .delivery-grid,
  .feedback-grid {
    grid-template-columns: 1fr;
  }

  .real-gallery {
    grid-auto-rows: auto;
  }

  .wide-slot {
    grid-row: auto;
  }

  .real-gallery .photo-slot img,
  .feedback-highlight img,
  .feedback-grid img {
    height: auto;
    aspect-ratio: auto;
  }

  .hero-stats div {
    padding: 16px;
  }

  .section,
  .contact-section {
    padding: 58px 18px;
  }

  .method-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .process div {
    min-height: auto;
  }

  .site-footer {
    display: grid;
    padding: 24px 18px;
  }
}