:root {
  --ink: #17231f;
  --muted: #61726c;
  --green-950: #07382e;
  --green-800: #0c5e4d;
  --green-600: #1c8c69;
  --green-100: #dfeee4;
  --mint: #f1f8f2;
  --cream: #f7f0df;
  --paper: #fffdf7;
  --gold: #c9932f;
  --coral: #b95b43;
  --plum: #4b3342;
  --line: rgba(19, 34, 28, 0.14);
  --shadow: 0 24px 62px rgba(7, 56, 46, 0.13);
  --radius: 8px;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  color: var(--ink);
  background: #fbfdf9;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  font-size: 18px;
  line-height: 1.75;
  background:
    linear-gradient(90deg, rgba(12, 94, 77, 0.045) 1px, transparent 1px) 0 0 / 64px 64px,
    linear-gradient(180deg, #fbfdf9 0%, #f5faf1 46%, #fffaf0 100%);
}

body.menu-open {
  overflow: hidden;
}

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

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

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 1000;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: var(--green-950);
  color: #fff;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: grid;
  grid-template-columns: minmax(190px, 1fr) auto minmax(190px, 1fr);
  align-items: center;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 58px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.38);
  color: #fff;
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  border-color: var(--line);
  background: rgba(251, 253, 249, 0.94);
  color: var(--ink);
  box-shadow: 0 10px 38px rgba(7, 63, 50, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 210px;
  line-height: 1.05;
}

.brand-logo {
  display: block;
  width: clamp(190px, 16vw, 280px);
  height: 70px;
  object-fit: contain;
  object-position: left center;
  border-radius: 4px;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 2px solid currentColor;
  border-radius: 50%;
  font-weight: 900;
}

.brand strong {
  display: block;
  font-size: 26px;
  letter-spacing: 0;
}

.brand small {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  letter-spacing: 0.08em;
  opacity: 0.72;
}

.site-nav {
  grid-column: 2;
  justify-self: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 20px;
  font-weight: 900;
}

.site-nav a {
  min-height: 56px;
  padding: 15px 20px;
  border-radius: var(--radius);
  color: inherit;
  line-height: 1.25;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.2);
  outline: none;
}

.site-header.is-scrolled .site-nav a:hover,
.site-header.is-scrolled .site-nav a:focus-visible,
.site-header.is-open .site-nav a:hover,
.site-header.is-open .site-nav a:focus-visible {
  background: var(--green-100);
}

.site-nav .nav-cta {
  margin-left: 10px;
  background: var(--gold);
  color: #1f1604;
  font-weight: 700;
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.menu-button span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: center;
  padding: 120px clamp(18px, 6vw, 84px) 86px;
  color: #fff;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 38%;
  background: linear-gradient(0deg, rgba(7, 63, 50, 0.82), transparent);
  pointer-events: none;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 63, 50, 0.9) 0%, rgba(7, 63, 50, 0.66) 42%, rgba(7, 63, 50, 0.15) 100%),
    url("assets/hero-product.jpg") center right / cover no-repeat;
  transform: scale(1.02);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--gold);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero h1,
.section h2 {
  margin: 0;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 11em;
  font-size: 88px;
  line-height: 1.05;
  text-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
}

.hero-lead {
  max-width: 680px;
  margin: 28px 0 0;
  font-size: 23px;
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.94);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 15px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.25;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.button.primary {
  background: var(--gold);
  color: #1f1604;
  box-shadow: 0 16px 34px rgba(215, 155, 39, 0.25);
}

.button.secondary {
  border-color: currentColor;
  background: rgba(255, 255, 255, 0.1);
}

.section .button.secondary {
  background: #fff;
  color: var(--green-800);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 620px;
  padding: 0;
  margin: 44px 0 0;
  list-style: none;
}

.hero-facts li {
  min-height: 108px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
}

.hero-facts strong,
.hero-facts span {
  display: block;
}

.hero-facts strong {
  font-size: 38px;
  line-height: 1;
}

.hero-facts span {
  margin-top: 9px;
  color: rgba(255, 255, 255, 0.78);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 16px;
}

.scroll-cue {
  position: absolute;
  z-index: 3;
  left: clamp(18px, 6vw, 84px);
  bottom: 28px;
  color: rgba(255, 255, 255, 0.8);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 16px;
}

.scroll-cue::after {
  content: "";
  display: inline-block;
  width: 42px;
  height: 1px;
  margin-left: 12px;
  vertical-align: middle;
  background: currentColor;
}

.section {
  padding: 104px clamp(22px, 5vw, 78px);
}

.section-heading {
  max-width: 960px;
  margin: 0 auto 54px;
  text-align: center;
}

.section h2 {
  font-size: 48px;
  line-height: 1.18;
}

.section h3 {
  margin: 0;
  font-size: 28px;
  line-height: 1.32;
}

.section p {
  color: var(--muted);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 18px;
  line-height: 1.9;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  max-width: 1240px;
  margin: 0 auto;
}

.feature-card {
  min-height: 286px;
  padding: 34px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(248, 253, 246, 0.92));
  box-shadow: 0 16px 38px rgba(7, 56, 46, 0.07);
}

.feature-index {
  display: inline-block;
  margin-bottom: 38px;
  color: var(--gold);
  font-size: 42px;
  font-weight: 900;
  line-height: 1;
}

.visual-band {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  background:
    linear-gradient(135deg, rgba(7, 56, 46, 0.98), rgba(12, 94, 77, 0.92)),
    linear-gradient(90deg, rgba(255, 255, 255, 0.07) 1px, transparent 1px) 0 0 / 42px 42px;
  color: #fff;
}

.visual-band p {
  color: rgba(255, 255, 255, 0.76);
}

.visual-copy {
  max-width: 520px;
}

.visual-gallery {
  display: grid;
  grid-template-columns: 0.7fr 1fr;
  grid-template-rows: repeat(2, minmax(180px, 330px));
  gap: 14px;
}

.visual-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 24px 58px rgba(0, 0, 0, 0.24);
}

.visual-gallery img:first-child {
  grid-row: 1 / 3;
}

.people-section {
  background: linear-gradient(180deg, var(--mint), #fff);
}

.audience-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  max-width: 1140px;
  margin: 0 auto;
}

.audience-panel {
  padding: 38px 34px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 20px 46px rgba(7, 56, 46, 0.09);
}

.audience-panel ul {
  display: grid;
  gap: 15px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.audience-panel li {
  position: relative;
  padding-left: 25px;
}

.audience-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green-600);
}

.notice {
  max-width: 1140px;
  margin: 28px auto 0;
  padding: 20px 24px;
  border-left: 5px solid var(--coral);
  border-radius: var(--radius);
  background: #fff7ef;
}

.how-section,
.trust-section,
.buy-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
}

.how-image img,
.ingredient-focus img,
.trust-images img,
.knowledge-item img,
.qr-panel img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.how-copy {
  max-width: 680px;
}

.steps {
  display: grid;
  gap: 18px;
  padding: 0;
  margin: 30px 0 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  position: relative;
  min-height: 104px;
  padding: 24px 24px 24px 88px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 26px rgba(7, 63, 50, 0.05);
  counter-increment: step;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 20px;
  top: 24px;
  color: var(--green-600);
  font-size: 30px;
  font-weight: 900;
}

.steps strong,
.steps span {
  display: block;
}

.steps strong {
  font-size: 23px;
  line-height: 1.3;
}

.steps span {
  margin-top: 9px;
  color: var(--muted);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 18px;
  line-height: 1.78;
}

.ingredient-section {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, #fbf8ef 0%, #f7f0df 100%);
}

.ingredient-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(12, 94, 77, 0.06) 1px, transparent 1px) 0 0 / 72px 72px,
    linear-gradient(0deg, rgba(12, 94, 77, 0.04) 1px, transparent 1px) 0 0 / 72px 72px;
  pointer-events: none;
}

.ingredient-header,
.ingredient-showcase {
  position: relative;
  z-index: 1;
}

.ingredient-header {
  display: grid;
  grid-template-columns: minmax(280px, 0.94fr) minmax(280px, 0.8fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: end;
  max-width: 1240px;
  margin: 0 auto 48px;
}

.ingredient-header h2 {
  max-width: 760px;
}

.ingredient-header > p {
  margin: 0;
}

.ingredient-showcase {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(320px, 1.28fr);
  gap: clamp(22px, 4vw, 42px);
  align-items: stretch;
  max-width: 1240px;
  margin: 0 auto;
}

.ingredient-focus {
  display: grid;
  align-content: end;
  min-height: 620px;
  overflow: hidden;
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(7, 56, 46, 0.18), rgba(7, 56, 46, 0.72)),
    var(--green-950);
  box-shadow: 0 26px 70px rgba(7, 56, 46, 0.18);
}

.ingredient-focus img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  object-position: center top;
  border-radius: 0;
  box-shadow: none;
}

.ingredient-focus div {
  padding: 32px;
  background: rgba(7, 56, 46, 0.94);
  color: #fff;
}

.ingredient-focus span {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--gold);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 18px;
  font-weight: 900;
}

.ingredient-focus p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.78);
}

.ingredient-matrix {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.ingredient-matrix article {
  min-height: 132px;
  padding: 20px;
  border: 1px solid rgba(12, 94, 77, 0.17);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.92);
  box-shadow: 0 10px 28px rgba(7, 56, 46, 0.06);
}

.ingredient-matrix strong,
.ingredient-matrix span {
  display: block;
}

.ingredient-matrix strong {
  font-size: 28px;
  line-height: 1.25;
  color: var(--green-800);
}

.ingredient-matrix span {
  margin-top: 12px;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.45;
}

.ingredient-principles {
  grid-column: 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.ingredient-principles article {
  padding: 26px 24px;
  border-radius: var(--radius);
  background: var(--green-950);
  color: #fff;
}

.ingredient-principles span {
  display: block;
  margin-bottom: 22px;
  color: var(--gold);
  font-size: 18px;
  font-weight: 900;
}

.ingredient-principles strong {
  display: block;
  font-size: 24px;
}

.ingredient-principles p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 17px;
  line-height: 1.75;
}

.trust-section {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.9fr);
}

.trust-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 32px;
}

.trust-points div {
  padding: 24px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
}

.trust-points strong,
.trust-points span {
  display: block;
}

.trust-points strong {
  color: var(--green-950);
  font-size: 20px;
}

.trust-points span {
  margin-top: 9px;
  color: var(--muted);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

.trust-images {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.trust-images img {
  max-height: 620px;
  object-fit: cover;
  object-position: top;
}

.knowledge-section {
  background: linear-gradient(180deg, #fff, #eef7f1);
}

.video-section {
  background:
    linear-gradient(180deg, #fff 0%, #f8fbf6 100%);
}

.video-layout {
  display: grid;
  grid-template-columns: minmax(300px, 1.15fr) minmax(260px, 0.85fr);
  gap: clamp(28px, 5vw, 66px);
  align-items: stretch;
  max-width: 1240px;
  margin: 0 auto;
}

.video-player {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #061f1a;
  color: #fff;
  box-shadow: var(--shadow);
}

.video-poster {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #0a2f25;
}

.video-poster img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.82;
}

.play-button {
  position: absolute;
  left: 50%;
  top: 50%;
  display: grid;
  width: 84px;
  height: 84px;
  place-items: center;
  border: 2px solid rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  background: rgba(215, 155, 39, 0.95);
  color: #1f1604;
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.play-button:hover,
.play-button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 9px rgba(255, 255, 255, 0.18);
  transform: translate(-50%, -50%) scale(1.04);
}

.play-button span {
  width: 0;
  height: 0;
  margin-left: 5px;
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
  border-left: 22px solid currentColor;
}

.video-empty-note {
  display: none;
  margin: 0;
  padding: 18px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.86) !important;
  font-size: 18px;
  line-height: 1.7;
}

.video-empty-note.is-visible {
  display: block;
}

.video-caption {
  padding: 28px;
}

.video-caption p {
  color: rgba(255, 255, 255, 0.76);
}

.video-list {
  display: grid;
  gap: 16px;
}

.video-card {
  min-height: 172px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 14px 34px rgba(7, 56, 46, 0.07);
}

.video-card span {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--gold);
  font-size: 38px;
  font-weight: 900;
  line-height: 1;
}

.video-card p {
  margin-bottom: 0;
}

.geo-summary {
  max-width: 1040px;
  margin: -12px auto 40px;
  padding: 26px 30px;
  border: 1px solid rgba(13, 103, 80, 0.18);
  border-left: 5px solid var(--green-600);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 12px 34px rgba(7, 63, 50, 0.06);
}

.geo-summary strong {
  display: block;
  color: var(--green-800);
  font-size: 22px;
}

.geo-summary p {
  margin: 8px 0 0;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  max-width: 1240px;
  margin: 0 auto;
}

.knowledge-item {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.knowledge-item img {
  width: 100%;
  height: 330px;
  object-fit: cover;
  object-position: top;
  border-radius: 0;
  box-shadow: none;
}

.knowledge-item h3,
.knowledge-item p {
  padding: 0 28px;
}

.knowledge-item h3 {
  margin-top: 28px;
}

.knowledge-item p {
  padding-bottom: 28px;
}

.buy-section {
  background: var(--green-950);
  color: #fff;
}

.buy-section p {
  color: rgba(255, 255, 255, 0.76);
}

.buy-copy {
  max-width: 680px;
}

.consult-line {
  display: inline-grid;
  gap: 4px;
  margin-top: 24px;
  padding: 22px 26px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
}

.consult-line span {
  color: rgba(255, 255, 255, 0.7);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 17px;
}

.consult-line strong {
  font-size: 32px;
  line-height: 1.25;
}

.qr-panel {
  justify-self: center;
  width: min(100%, 450px);
  padding: 24px;
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
}

.qr-panel img {
  width: 100%;
  box-shadow: none;
}

.qr-panel h3 {
  margin-top: 18px;
}

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

.faq-list {
  display: grid;
  gap: 16px;
  max-width: 1000px;
  margin: 0 auto;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 28px rgba(7, 63, 50, 0.05);
}

.faq-list summary {
  cursor: pointer;
  padding: 26px 28px;
  font-size: 23px;
  line-height: 1.45;
  font-weight: 900;
}

.faq-list details p {
  margin: 0;
  padding: 0 28px 28px;
}

.partner-section {
  padding-top: 0;
}

.partner-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(34px, 6vw, 72px);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(13, 103, 80, 0.92), rgba(31, 156, 115, 0.76)),
    url("assets/principle.jpg") center / cover;
  color: #fff;
}

.partner-copy {
  max-width: 880px;
}

.partner-inner p {
  color: rgba(255, 255, 255, 0.78);
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 36px;
}

.partner-grid article {
  min-height: 242px;
  padding: 26px 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
}

.partner-grid span {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--gold);
  font-size: 36px;
  font-weight: 900;
  line-height: 1;
}

.partner-grid h3 {
  color: #fff;
}

.partner-grid p {
  margin-bottom: 0;
  font-size: 17px;
  line-height: 1.78;
}

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

.button.ghost {
  border-color: rgba(255, 255, 255, 0.62);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.8fr);
  gap: 24px;
  padding: 40px clamp(22px, 5vw, 78px);
  background: #071d17;
  color: rgba(255, 255, 255, 0.82);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}

.site-footer strong {
  color: #fff;
}

.site-footer p {
  margin: 8px 0 0;
  font-size: 17px;
  line-height: 1.8;
}

.sticky-buy {
  position: fixed;
  left: 50%;
  bottom: 18px;
  z-index: 45;
  display: flex;
  align-items: center;
  gap: 14px;
  width: min(calc(100% - 32px), 520px);
  min-height: 64px;
  padding: 10px 10px 10px 22px;
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: var(--radius);
  background: rgba(7, 63, 50, 0.92);
  color: #fff;
  box-shadow: 0 18px 50px rgba(7, 63, 50, 0.3);
  transform: translate(-50%, 110px);
  transition: transform 0.25s ease;
  backdrop-filter: blur(14px);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}

.sticky-buy.is-visible {
  transform: translate(-50%, 0);
}

.sticky-buy span {
  flex: 1;
  font-size: 18px;
  font-weight: 700;
}

.sticky-buy a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: var(--radius);
  background: var(--gold);
  color: #1f1604;
  font-size: 18px;
  font-weight: 900;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 920px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .menu-button {
    grid-column: 2;
    justify-self: end;
    display: block;
    width: 48px;
    height: 48px;
  }

  .site-nav {
    grid-column: auto;
    position: fixed;
    inset: 76px 12px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(251, 253, 249, 0.98);
    color: var(--ink);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    width: 100%;
    min-height: 50px;
    padding: 14px 16px;
    font-size: 18px;
  }

  .site-nav .nav-cta {
    margin-left: 0;
  }

  .hero {
    min-height: 96svh;
  }

  .hero-bg {
    background:
      linear-gradient(180deg, rgba(7, 63, 50, 0.92) 0%, rgba(7, 63, 50, 0.76) 48%, rgba(7, 63, 50, 0.4) 100%),
      url("assets/hero-product.jpg") center bottom / cover no-repeat;
  }

  .hero-facts,
  .feature-grid,
  .audience-layout,
  .knowledge-grid,
  .trust-points,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .visual-band,
  .how-section,
  .video-layout,
  .ingredient-header,
  .ingredient-showcase,
  .trust-section,
  .buy-section {
    grid-template-columns: 1fr;
  }

  .ingredient-focus {
    min-height: auto;
  }

  .ingredient-focus img {
    max-height: 620px;
  }

  .ingredient-matrix {
    grid-template-columns: repeat(2, minmax(180px, 1fr));
  }

  .ingredient-principles {
    grid-column: auto;
    grid-template-columns: 1fr;
  }

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

  .visual-gallery {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }

  .visual-gallery img:first-child {
    grid-row: auto;
    grid-column: 1 / 3;
    max-height: 560px;
    object-position: top;
  }

  .trust-images {
    max-width: 560px;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding: 12px 14px;
  }

  .brand {
    min-width: 0;
  }

  .brand-logo {
    width: 168px;
    height: 56px;
  }

  .brand strong {
    font-size: 22px;
  }

  .brand small {
    font-size: 11px;
  }

  .hero {
    padding: 106px 20px 86px;
  }

  .hero h1 {
    font-size: 54px;
    line-height: 1.08;
  }

  .hero-lead {
    font-size: 19px;
    line-height: 1.82;
  }

  .hero-actions,
  .buy-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
    min-height: 56px;
    font-size: 19px;
  }

  .hero-facts li {
    min-height: 94px;
    padding: 16px 10px;
    text-align: center;
  }

  .hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-top: 32px;
  }

  .hero-facts strong {
    font-size: 27px;
  }

  .hero-facts span {
    font-size: 15px;
    line-height: 1.4;
  }

  .section {
    padding: 72px 20px;
  }

  .section-heading {
    text-align: left;
  }

  .section h2 {
    font-size: 34px;
    line-height: 1.24;
  }

  .section h3 {
    font-size: 26px;
  }

  .section p {
    font-size: 18px;
    line-height: 1.88;
  }

  .eyebrow {
    font-size: 15px;
    line-height: 1.55;
  }

  .feature-card,
  .audience-panel {
    padding: 28px 24px;
  }

  .ingredient-header {
    margin-bottom: 28px;
  }

  .ingredient-focus div {
    padding: 28px 24px;
  }

  .ingredient-matrix {
    grid-template-columns: 1fr;
  }

  .ingredient-matrix article {
    min-height: 106px;
  }

  .ingredient-principles article {
    padding: 24px;
  }

  .partner-inner {
    padding: 34px 24px;
  }

  .partner-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .partner-grid article {
    min-height: auto;
    padding: 24px;
  }

  .partner-grid span {
    margin-bottom: 18px;
    font-size: 32px;
  }

  .partner-actions {
    flex-direction: column;
  }

  .partner-actions .button {
    width: 100%;
  }

  .visual-gallery {
    grid-template-columns: 1fr;
  }

  .visual-gallery img:first-child {
    grid-column: auto;
  }

  .steps li {
    min-height: 118px;
    padding: 24px 22px 24px 74px;
  }

  .steps li::before {
    left: 18px;
    font-size: 28px;
  }

  .steps strong {
    font-size: 22px;
  }

  .steps span,
  .audience-panel ul,
  .ingredient-principles p,
  .trust-points span,
  .video-empty-note {
    font-size: 18px;
  }

  .trust-images {
    grid-template-columns: 1fr;
  }

  .knowledge-item img {
    height: 280px;
  }

  .faq-list summary {
    padding: 24px;
    font-size: 22px;
  }

  .faq-list details p {
    padding: 0 24px 24px;
  }

  .consult-line strong {
    font-size: 26px;
  }

  .sticky-buy {
    bottom: 10px;
    width: calc(100% - 20px);
    min-height: 66px;
  }

  .sticky-buy span {
    font-size: 17px;
  }

  .sticky-buy a {
    min-height: 46px;
    font-size: 17px;
  }
}