:root {
  --green: #31533f;
  --green-deep: #193427;
  --moss: #6f7c55;
  --earth: #9b6c43;
  --clay: #c6824d;
  --paper: #f7f3eb;
  --cream: #fffaf1;
  --ink: #1f2923;
  --muted: #667168;
  --line: rgba(31, 41, 35, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  overflow-x: hidden;
  padding-bottom: calc(82px + env(safe-area-inset-bottom));
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(247, 243, 235, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
}

.brand-logo {
  display: block;
  width: 40px;
  height: 40px;
  max-width: 40px;
  max-height: 40px;
  object-fit: contain;
  flex: 0 0 auto;
}

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

.brand small {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0;
}

.site-header nav,
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--green-deep);
  font-size: 14px;
}

.site-header nav a {
  white-space: nowrap;
}

.hero {
  position: relative;
  min-height: 88vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  isolation: isolate;
}

.hero-video,
.hero-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

.hero-video {
  object-position: center center;
}

.hero-poster {
  transition: opacity 0.8s ease;
}

.hero-video[src] + .hero-poster {
  opacity: 0;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(20, 37, 28, 0.82), rgba(20, 37, 28, 0.48) 45%, rgba(20, 37, 28, 0.12));
  z-index: -1;
}

.hero-copy {
  width: min(820px, calc(100% - 36px));
  margin: 0 0 clamp(42px, 9vh, 92px) clamp(18px, 7vw, 92px);
  color: #fffdf7;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--clay);
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow { color: #f0c08d; }

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

h1 {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: clamp(44px, 7vw, 92px);
  line-height: 1.04;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lead {
  max-width: 760px;
  font-size: clamp(17px, 2vw, 22px);
  color: rgba(255, 253, 247, 0.9);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 4px;
  font-weight: 700;
  font: inherit;
  cursor: pointer;
}

.button.primary {
  background: #fffaf1;
  color: var(--green-deep);
  border-color: #fffaf1;
}

.button.secondary {
  color: #fffaf1;
}

.button.dark {
  min-height: 42px;
  background: var(--green-deep);
  color: var(--cream);
  border-color: var(--green-deep);
}

.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
  background: var(--green-deep);
  color: var(--cream);
}

.facts div {
  padding: 26px clamp(18px, 3vw, 36px);
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.facts strong {
  display: block;
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.1;
}

.facts span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 250, 241, 0.76);
}

.section {
  padding: clamp(58px, 8vw, 112px) clamp(18px, 6vw, 86px);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(280px, 1.2fr);
  gap: clamp(28px, 6vw, 76px);
  align-items: start;
}

.rich-text {
  max-width: 820px;
  font-size: 20px;
  color: #3e4a42;
}

.audience {
  background: var(--cream);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--line);
}

.audience-grid article {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 14px;
  min-height: 250px;
  padding: 30px;
  background: #fffaf1;
  transition: background 0.2s ease, transform 0.2s ease;
}

.audience-grid article:hover {
  background: #f3ebde;
  transform: translateY(-2px);
}

.audience-grid span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #e2c49a;
  color: var(--green-deep);
  font-weight: 800;
}

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

.conversion-hub .conversion-actions {
  padding-top: 16px;
}

.conversion-tip {
  margin: 18px 0 0;
  padding: 16px 20px;
  color: var(--muted);
  background: rgba(49, 83, 63, 0.08);
  border-left: 4px solid var(--green);
}

.values,
.proof-grid,
.cooperation-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  padding-top: 0;
}

.values article,
.proof-grid article,
.cooperation-grid article,
.system-grid article {
  background: var(--cream);
  padding: 28px;
  min-height: 210px;
}

.values span {
  display: block;
  margin-bottom: 26px;
  color: var(--earth);
  font-weight: 800;
}

.section-head {
  max-width: 820px;
  margin-bottom: 34px;
}

.section-head p:last-child {
  color: var(--muted);
  font-size: 18px;
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
}

.system-grid article {
  min-height: 188px;
}

.explore {
  background: #f3ebde;
}

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

.explore-grid article {
  display: grid;
  grid-template-rows: 220px 1fr;
  background: var(--cream);
  border: 1px solid var(--line);
}

.explore-media {
  position: relative;
  display: block;
  height: 100%;
  overflow: hidden;
  background: #e8ddcd;
}

.explore-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.explore-image-current {
  transform: translateX(0);
}

.explore-image-next {
  z-index: 1;
  transform: translateX(100%);
}

.explore-media.is-sliding .explore-image-next {
  animation: imageCoverFromRight 0.62s cubic-bezier(0.22, 0.84, 0.28, 1) forwards;
}

.explore-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(25, 52, 39, 0), rgba(25, 52, 39, 0.48));
  opacity: 0;
  z-index: 2;
  transition: opacity 0.25s ease;
}

.explore-media span {
  position: absolute;
  right: 16px;
  bottom: 14px;
  z-index: 3;
  color: var(--cream);
  font-weight: 800;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.explore-media:hover .explore-image-current {
  transform: scale(1.04);
}

.explore-media:hover::after,
.explore-media:hover span {
  opacity: 1;
}

.explore-media:hover span {
  transform: translateY(0);
}

@keyframes imageCoverFromRight {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.explore-grid article > div {
  display: grid;
  gap: 10px;
  padding: 24px;
}

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

.product-band {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(320px, 1.2fr);
  gap: clamp(30px, 7vw, 90px);
  background: var(--green);
  color: var(--cream);
}

.product-band .eyebrow { color: #f0c08d; }

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

.product-list a {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 250, 241, 0.22);
}

.product-list span {
  color: rgba(255, 250, 241, 0.78);
}

.conversion {
  background: #efe7d8;
}

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

.conversion-grid article {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 12px;
  min-height: 310px;
  padding: 26px;
  background: var(--cream);
  border: 1px solid var(--line);
}

.conversion-grid article p {
  margin-bottom: 0;
}

.conversion-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #e2c49a;
  color: var(--green-deep);
  font-weight: 800;
}

.conversion-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: auto;
  padding-top: 18px;
}

.text-link {
  color: var(--green);
  font-weight: 700;
  border-bottom: 1px solid currentColor;
}

.conversion-note {
  margin-top: 18px;
  padding: 18px 22px;
  background: rgba(49, 83, 63, 0.08);
  border-left: 4px solid var(--green);
}

.conversion-note p {
  margin: 4px 0 0;
  color: var(--muted);
}

.mini-program-status {
  min-height: 26px;
  color: var(--green-deep) !important;
  font-weight: 700;
}

.experience-strip {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(300px, 1.28fr);
  gap: clamp(24px, 5vw, 70px);
  background: var(--cream);
  border-top: 1px solid var(--line);
}

.experience-items {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.experience-items article {
  display: grid;
  gap: 8px;
  padding: 22px;
  background: #f3ebde;
  border: 1px solid var(--line);
}

.experience-items strong {
  font-size: 19px;
}

.experience-items span {
  color: var(--muted);
}

.experience-items em {
  color: var(--earth);
  font-size: 26px;
  font-style: normal;
  font-weight: 800;
}

.faq {
  background: #f3ebde;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
}

.faq-grid article {
  min-height: 260px;
  padding: 28px;
  background: var(--cream);
}

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

.contact-panel {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(280px, 420px);
  gap: 40px;
  align-items: start;
  background: var(--cream);
}

address {
  display: grid;
  gap: 10px;
  padding: 28px;
  border-left: 4px solid var(--clay);
  background: #f3ebde;
  font-style: normal;
}

address a {
  color: var(--green-deep);
  font-weight: 800;
}

.cooperation-grid {
  grid-template-columns: repeat(3, 1fr);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 30px clamp(18px, 4vw, 56px);
  background: var(--green-deep);
  color: var(--cream);
}

.site-footer p {
  margin: 4px 0 0;
  color: rgba(255, 250, 241, 0.7);
}

.site-footer nav {
  color: var(--cream);
}

.sticky-cta {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  display: flex;
  gap: 8px;
  padding: 8px;
  background: rgba(255, 250, 241, 0.94);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 10px 28px rgba(25, 52, 39, 0.16);
  backdrop-filter: blur(14px);
}

.sticky-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 13px;
  border-radius: 4px;
  color: var(--green-deep);
  font-size: 14px;
  font-weight: 800;
}

.sticky-cta a:first-child {
  background: var(--green-deep);
  color: var(--cream);
}

.sub-hero {
  position: relative;
  min-height: 76vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(120px, 18vh, 210px) clamp(18px, 7vw, 92px) clamp(48px, 9vh, 92px);
  color: #fffdf7;
}

.sub-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(20, 37, 28, 0.82), rgba(20, 37, 28, 0.48) 52%, rgba(20, 37, 28, 0.16));
  z-index: -1;
}

.sub-hero > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

.sub-hero > div {
  max-width: 830px;
}

.sub-hero .eyebrow {
  color: #f0c08d;
}

.sub-intro {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(280px, 1.2fr);
  gap: clamp(28px, 6vw, 76px);
  align-items: start;
}

.sub-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  padding-top: 0;
}

.sub-feature-grid article {
  min-height: 230px;
  padding: 30px;
  background: var(--cream);
}

.media-text {
  display: grid;
  grid-template-columns: minmax(320px, 1.1fr) minmax(280px, 0.9fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  background: var(--cream);
}

.media-text.reverse {
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1.1fr);
}

.media-text.reverse img {
  order: 2;
}

.media-text img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--line);
}

.heyi-home {
  border-top: 1px solid var(--line);
}

.heyi-home img {
  min-height: 360px;
}

.heyi-home .button.secondary {
  color: var(--green-deep);
  border-color: var(--line);
}

.heyi-points {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
}

.heyi-points article {
  min-height: 240px;
  padding: 28px;
  background: var(--cream);
}

.heyi-points span {
  display: block;
  margin-bottom: 18px;
  color: var(--earth);
  font-weight: 800;
}

.heyi-gallery {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 14px;
  background: var(--cream);
}

.heyi-gallery img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.heyi-gallery div {
  display: grid;
  gap: 14px;
}

.content-hub {
  background: var(--cream);
}

.content-hub .section-head {
  max-width: 900px;
}

.content-block {
  padding-top: 0;
}

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

.content-card,
.content-empty {
  min-height: 260px;
  border: 1px solid var(--line);
  background: #fffaf1;
}

.content-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.content-card div,
.content-empty {
  padding: 24px;
}

.content-date {
  margin: 0 0 10px;
  color: var(--earth);
  font-size: 13px;
  font-weight: 800;
}

.content-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}

.content-tags span {
  border: 1px solid var(--line);
  padding: 5px 9px;
  color: var(--muted);
  font-size: 13px;
}

.content-empty a {
  display: inline-flex;
  margin-top: 18px;
  color: var(--green-deep);
  font-weight: 900;
  text-decoration: underline;
  text-underline-offset: 5px;
}

@media (max-width: 980px) {
  .facts,
  .audience-grid,
  .values,
  .proof-grid,
  .system-grid,
  .cooperation-grid,
  .conversion-grid,
  .faq-grid,
  .experience-strip,
  .experience-items,
  .explore-grid,
  .sub-feature-grid,
  .sub-intro,
  .media-text,
  .media-text.reverse,
  .heyi-points,
  .heyi-gallery,
  .content-list,
  .intro-grid,
  .product-band,
  .contact-panel {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  body {
    padding-bottom: calc(86px + env(safe-area-inset-bottom));
  }

  .site-header {
    align-items: stretch;
    flex-direction: column;
    gap: 10px;
    padding: 12px 16px 10px;
  }

  .brand-logo {
    width: 34px;
    height: 34px;
    max-width: 34px;
    max-height: 34px;
  }

  .brand small {
    font-size: 10px;
  }

  .site-header nav {
    flex-wrap: nowrap;
    gap: 16px;
    width: 100%;
    overflow-x: auto;
    padding: 2px 0 4px;
    font-size: 13px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .site-header nav::-webkit-scrollbar {
    display: none;
  }

  .hero {
    min-height: min(760px, 86svh);
    align-items: end;
  }

  .sub-hero {
    min-height: min(720px, 82svh);
    padding: 108px 18px 46px;
  }

  .sub-hero::after {
    background: linear-gradient(180deg, rgba(20, 37, 28, 0.18), rgba(20, 37, 28, 0.58) 42%, rgba(20, 37, 28, 0.88));
  }

  .hero::after {
    background: linear-gradient(180deg, rgba(20, 37, 28, 0.18), rgba(20, 37, 28, 0.58) 42%, rgba(20, 37, 28, 0.88));
  }

  .hero-copy {
    width: calc(100% - 32px);
    margin: 0 16px 38px;
  }

  h1 {
    font-size: 42px;
    line-height: 1.08;
  }

  h2 {
    font-size: 31px;
    line-height: 1.16;
  }

  h3 {
    font-size: 19px;
  }

  .lead {
    font-size: 16px;
    line-height: 1.72;
  }

  .hero-actions {
    gap: 10px;
    margin-top: 22px;
  }

  .hero-actions .button {
    min-width: 128px;
    padding: 0 16px;
  }

  .section {
    padding: 54px 18px;
  }

  .section-head {
    margin-bottom: 26px;
  }

  .section-head p:last-child,
  .rich-text {
    font-size: 17px;
  }

  .facts {
    grid-template-columns: 1fr 1fr;
  }

  .facts div {
    min-height: 118px;
    padding: 22px 18px;
  }

  .facts strong {
    font-size: 28px;
  }

  .values,
  .audience-grid,
  .proof-grid,
  .system-grid,
  .cooperation-grid,
  .conversion-grid,
  .faq-grid,
  .experience-strip,
  .experience-items,
  .explore-grid,
  .sub-feature-grid,
  .sub-intro,
  .media-text,
  .media-text.reverse,
  .heyi-points,
  .heyi-gallery,
  .content-list,
  .intro-grid,
  .product-band,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .values article,
  .audience-grid article,
  .proof-grid article,
  .cooperation-grid article,
  .system-grid article,
  .sub-feature-grid article,
  .conversion-grid article,
  .faq-grid article,
  .heyi-points article {
    min-height: auto;
    padding: 24px;
  }

  .heyi-home img,
  .heyi-gallery img {
    min-height: 220px;
  }

  .product-list a {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 16px 0;
  }

  .explore-grid {
    gap: 14px;
  }

  .explore-grid article {
    grid-template-rows: 190px 1fr;
  }

  .media-text.reverse img {
    order: 0;
  }

  .conversion-actions {
    gap: 10px;
  }

  .conversion-actions .button {
    min-width: 118px;
    padding: 0 16px;
  }

  .conversion-note {
    padding: 16px 18px;
  }

  address {
    padding: 24px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .sticky-cta {
    right: 10px;
    bottom: calc(10px + env(safe-area-inset-bottom));
    left: 10px;
    justify-content: space-between;
    padding: 7px;
    border-radius: 8px;
  }

  .sticky-cta a {
    flex: 1;
    padding: 0 8px;
    min-height: 40px;
    font-size: 13px;
  }
}