:root {
  --ink: #14221f;
  --muted: #5a6763;
  --line: #d9dfdc;
  --paper: #fbfaf5;
  --soft: #eef3ec;
  --green: #0c3b33;
  --green-2: #1f6758;
  --gold: #f2b24d;
  --red: #b84d3b;
  --blue: #236b8e;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  letter-spacing: 0;
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  width: 100%;
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 14px clamp(18px, 4vw, 56px);
  color: var(--white);
  background: rgba(12, 31, 28, 0.84);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 285px;
}

.brand-logo {
  width: 150px;
  height: auto;
  padding: 5px 8px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
}

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

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

.brand small {
  margin-top: 2px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 11px;
}

.site-nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}

.site-nav a:hover {
  color: var(--white);
}

.nav-cta,
.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 8px;
  font-weight: 700;
  white-space: nowrap;
  border: 0;
  cursor: pointer;
  font: inherit;
}

.nav-cta,
.primary-btn {
  background: var(--gold);
  color: #1b211b;
}

.secondary-btn {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.54);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  color: var(--white);
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 29, 26, 0.9), rgba(10, 29, 26, 0.55) 42%, rgba(10, 29, 26, 0.18)),
    linear-gradient(0deg, rgba(10, 29, 26, 0.86), rgba(10, 29, 26, 0.08) 48%);
}

.hero-content {
  position: relative;
  width: min(980px, calc(100% - 36px));
  margin: 0 auto;
  padding: 150px 0 84px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 800;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: 58px;
  line-height: 1.08;
  font-weight: 850;
}

.hero-copy {
  max-width: 680px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 20px;
  line-height: 1.75;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-facts span,
.hero-facts a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.11);
  color: rgba(255, 255, 255, 0.92);
  font-weight: 800;
}

.inline-light-link {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.body-link {
  color: var(--green);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.section,
.intro-band,
.camp-section,
.method-section,
.contact-section {
  padding: 88px 0;
}

.section-inner {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
}

.intro-band {
  background: var(--green);
  color: var(--white);
}

.camp-section {
  background: #f8fbff;
}

.camp-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.65fr);
  gap: 30px;
  align-items: start;
}

.camp-copy h2 {
  max-width: 760px;
}

.camp-copy > p {
  max-width: 760px;
  color: var(--muted);
  font-size: 17px;
}

.camp-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 28px;
}

.camp-info-grid article,
.engine-grid article,
.timeline-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.camp-info-grid article {
  min-height: 130px;
  padding: 20px;
}

.camp-info-grid strong,
.timeline-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 18px;
}

.camp-info-grid span,
.timeline-grid span {
  color: var(--muted);
  line-height: 1.65;
}

.poster-link {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 18px 50px rgba(23, 48, 84, 0.16);
}

.poster-link img {
  width: 100%;
  height: auto;
}

.engine-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
}

.engine-grid article {
  padding: 28px;
  background:
    linear-gradient(135deg, rgba(35, 107, 142, 0.12), rgba(242, 178, 77, 0.14)),
    var(--white);
}

.engine-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  height: 34px;
  margin-bottom: 16px;
  border-radius: 8px;
  background: var(--blue);
  color: var(--white);
  font-weight: 800;
}

.engine-grid article:nth-child(2) .engine-tag {
  background: var(--red);
}

.engine-grid p {
  color: var(--muted);
}

.career-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.career-strip span {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 8px;
  background: var(--green);
  color: var(--white);
  font-weight: 800;
}

.career-strip span:nth-child(2n) {
  background: var(--blue);
}

.career-strip span:nth-child(3n) {
  background: var(--red);
}

.career-strip span:nth-child(4n) {
  background: var(--gold);
  color: var(--ink);
}

.schedule-block {
  margin-top: 52px;
}

.schedule-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 22px;
  margin-bottom: 22px;
}

.schedule-heading h2 {
  max-width: 720px;
}

.outline-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--green);
  border-radius: 8px;
  color: var(--green);
  font-weight: 800;
  white-space: nowrap;
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.timeline-grid article {
  min-height: 150px;
  padding: 18px;
}

.schedule-image {
  display: block;
  max-width: 900px;
  margin: 28px auto 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 18px 50px rgba(23, 48, 84, 0.16);
}

.schedule-image img {
  width: 100%;
}

.intro-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: start;
}

h2 {
  margin: 0;
  font-size: 36px;
  line-height: 1.2;
}

h3 {
  margin: 0;
  font-size: 22px;
}

p {
  line-height: 1.8;
}

.intro-text p,
.section-heading p,
.photo-band p,
.method-grid p,
.coach-card p,
.contact-grid p,
.contact-panel p {
  color: var(--muted);
}

.intro-band .intro-text p {
  color: rgba(255, 255, 255, 0.78);
  margin-top: 0;
}

blockquote {
  margin: 26px 0 0;
  padding-left: 22px;
  border-left: 4px solid var(--gold);
  color: var(--white);
  font-size: 24px;
  font-weight: 800;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 42px;
}

.section-heading p {
  margin-bottom: 0;
  font-size: 17px;
}

.system-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.principle-panel,
.seven-grid article,
.course-grid article,
.coach-card,
.coach-points article,
.contact-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.principle-panel {
  padding: 30px;
}

.accent-panel {
  background: #132f2a;
  color: var(--white);
  border-color: #132f2a;
}

.panel-label {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--gold);
  font-weight: 800;
}

.clean-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  gap: 16px;
}

.clean-list li {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 16px;
}

.clean-list strong {
  color: var(--green);
}

.clean-list span {
  color: var(--muted);
  line-height: 1.65;
}

.six-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.six-grid span {
  min-height: 78px;
  padding: 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.09);
  line-height: 1.45;
}

.six-grid small {
  color: rgba(255, 255, 255, 0.7);
}

.seven-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
  margin-top: 18px;
}

.seven-grid article {
  min-height: 152px;
  padding: 18px;
}

.seven-grid strong {
  display: block;
  margin-bottom: 10px;
  color: var(--green);
  font-size: 19px;
}

.seven-grid span,
.course-grid p,
.coach-points span {
  color: var(--muted);
  line-height: 1.7;
  font-size: 14px;
}

.photo-band {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  background: var(--soft);
}

.photo-band img {
  width: 100%;
  height: 520px;
  object-fit: cover;
}

.photo-band div {
  padding: 54px clamp(28px, 6vw, 92px);
}

.muted {
  background: #f3f0e8;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.course-grid article {
  padding: 22px;
  min-height: 245px;
}

.course-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  border-radius: 8px;
  color: var(--white);
  background: var(--blue);
  font-weight: 800;
}

.course-grid article:nth-child(2) span,
.course-grid article:nth-child(5) span {
  background: var(--green-2);
}

.course-grid article:nth-child(3) span {
  background: var(--red);
}

.course-grid article:nth-child(4) span {
  background: var(--gold);
  color: var(--ink);
}

.compact-heading {
  max-width: 680px;
}

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

figure {
  margin: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

figcaption {
  padding: 15px 16px 17px;
  font-weight: 700;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 26px;
  overflow: hidden;
  border-radius: 8px;
  background: var(--line);
  border: 1px solid var(--line);
}

.metric-row div {
  padding: 24px;
  background: var(--white);
}

.metric-row strong {
  display: block;
  color: var(--green);
  font-size: 38px;
  line-height: 1;
}

.metric-row span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
}

.method-section {
  background: #132f2a;
  color: var(--white);
}

.method-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 46px;
  align-items: center;
}

.method-grid p {
  color: rgba(255, 255, 255, 0.76);
  font-size: 17px;
}

.method-grid img {
  width: 100%;
  height: 430px;
  object-fit: cover;
  border-radius: 8px;
}

.coach-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 22px;
  align-items: stretch;
}

.coach-card,
.contact-panel {
  padding: 32px;
}

.coach-points {
  display: grid;
  gap: 14px;
}

.coach-points article {
  padding: 24px;
}

.coach-points strong {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
}

.contact-section {
  background: var(--green);
  color: var(--white);
}

.contact-grid {
  align-items: center;
}

.contact-grid p {
  color: rgba(255, 255, 255, 0.78);
}

.contact-panel {
  background: var(--white);
  color: var(--ink);
}

.contact-panel p {
  color: var(--muted);
}

.wechat-box {
  display: grid;
  gap: 6px;
  margin: 22px 0 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f6f3ea;
}

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

.wechat-box strong {
  color: var(--green);
  font-size: 24px;
}

.full-btn {
  width: 100%;
  margin-top: 8px;
}

.text-link {
  display: inline-flex;
  margin-top: 18px;
  color: var(--green);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(18px, 4vw, 56px);
  background: #071916;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

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

  .hero h1 {
    font-size: 44px;
  }

  .intro-grid,
  .camp-hero-grid,
  .system-layout,
  .photo-band,
  .method-grid,
  .coach-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .seven-grid,
  .course-grid,
  .camp-info-grid,
  .engine-grid,
  .timeline-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .photo-band img,
  .method-grid img {
    height: 380px;
  }

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

@media (max-width: 640px) {
  .site-header {
    min-height: 66px;
    padding: 10px 14px;
  }

  .brand {
    min-width: 0;
    gap: 10px;
  }

  .brand small {
    display: none;
  }

  .brand-logo {
    width: 118px;
    padding: 4px 6px;
  }

  .nav-cta {
    margin-left: auto;
    min-height: 40px;
    padding: 0 14px;
    font-size: 14px;
  }

  .hero {
    min-height: 88vh;
  }

  .hero-shade {
    background:
      linear-gradient(0deg, rgba(10, 29, 26, 0.9), rgba(10, 29, 26, 0.25)),
      linear-gradient(90deg, rgba(10, 29, 26, 0.72), rgba(10, 29, 26, 0.2));
  }

  .hero-content {
    padding: 116px 0 58px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .primary-btn,
  .secondary-btn {
    width: 100%;
  }

  .section,
  .intro-band,
  .camp-section,
  .method-section,
  .contact-section {
    padding: 62px 0;
  }

  h2 {
    font-size: 28px;
  }

  .principle-panel,
  .coach-card,
  .contact-panel {
    padding: 24px;
  }

  .clean-list li {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .six-grid,
  .seven-grid,
  .course-grid,
  .camp-info-grid,
  .engine-grid,
  .timeline-grid,
  .proof-grid,
  .metric-row {
    grid-template-columns: 1fr;
  }

  .schedule-heading {
    display: grid;
    align-items: start;
  }

  .outline-link {
    width: 100%;
  }

  .photo-band img,
  .method-grid img {
    height: 300px;
  }

  .photo-band div {
    padding: 42px 18px;
  }

  .course-grid article {
    min-height: auto;
  }

  .site-footer {
    flex-direction: column;
  }
}