.hb-jogger-guide {
  --hb-ink: #111111;
  --hb-copy: #333333;
  --hb-muted: #6f6f6f;
  --hb-line: #dedede;
  --hb-soft: #f5f5f5;
  --hb-white: #ffffff;

  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  color: var(--hb-copy);
  background: var(--hb-white);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.72;
}

.hb-jogger-guide,
.hb-jogger-guide * {
  box-sizing: border-box;
}

.hb-jogger-guide h1,
.hb-jogger-guide h2,
.hb-jogger-guide h3,
.hb-jogger-guide p,
.hb-jogger-guide ul,
.hb-jogger-guide ol,
.hb-jogger-guide figure {
  margin-top: 0;
}

.hb-jogger-guide h2 {
  margin: 70px 0 22px;
  padding-top: 20px;
  border-top: 2px solid var(--hb-ink);
  color: var(--hb-ink);
  font-size: clamp(27px, 3vw, 36px);
  line-height: 1.18;
  letter-spacing: -0.025em;
  scroll-margin-top: 24px;
}

.hb-jogger-guide h3 {
  margin: 32px 0 12px;
  color: var(--hb-ink);
  font-size: 21px;
  line-height: 1.3;
}

.hb-jogger-guide p {
  margin-bottom: 18px;
}

.hb-jogger-guide a {
  color: var(--hb-ink);
  font-weight: 700;
  text-decoration-color: #8a8a8a;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.hb-jogger-guide a:hover {
  text-decoration-color: var(--hb-ink);
}

.hb-jogger-guide ul,
.hb-jogger-guide ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.hb-jogger-guide li {
  margin-bottom: 10px;
}

.hb-jogger-guide .hb-lede {
  max-width: 930px;
  margin-bottom: 28px;
  color: #262626;
  font-size: 20px;
  line-height: 1.65;
}

/* =========================================================
   TABLE OF CONTENTS
   6个核心入口，桌面端一排，无横向滑动
   ========================================================= */

.hb-jogger-guide .hb-toc {
  width: 100%;
  margin: 32px 0 44px;
  padding: 18px;
  border: 1px solid var(--hb-line);
  background: var(--hb-soft);
  overflow: visible;
}

.hb-jogger-guide .hb-toc-title {
  display: block;
  margin-bottom: 12px;
  color: var(--hb-ink);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.hb-jogger-guide .hb-toc-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
}

.hb-jogger-guide .hb-toc a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: 9px 10px;
  border: 1px solid #bdbdbd;
  background: var(--hb-white);
  color: var(--hb-ink);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
  white-space: normal;
  transition:
    background .2s ease,
    color .2s ease,
    border-color .2s ease;
}

.hb-jogger-guide .hb-toc a:hover {
  border-color: var(--hb-ink);
  background: var(--hb-ink);
  color: var(--hb-white);
}

/* =========================================================
   DECISION GRIDS
   ========================================================= */

.hb-jogger-guide .hb-opening-grid,
.hb-jogger-guide .hb-role-grid,
.hb-jogger-guide .hb-test-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 28px 0;
  border-top: 1px solid var(--hb-ink);
  border-bottom: 1px solid var(--hb-ink);
}

.hb-jogger-guide .hb-opening-grid > div,
.hb-jogger-guide .hb-role-grid > div,
.hb-jogger-guide .hb-test-grid > div {
  padding: 19px 20px;
  border-right: 1px solid var(--hb-line);
}

.hb-jogger-guide .hb-opening-grid > div:last-child,
.hb-jogger-guide .hb-role-grid > div:last-child,
.hb-jogger-guide .hb-test-grid > div:last-child {
  border-right: 0;
}

.hb-jogger-guide .hb-opening-grid strong,
.hb-jogger-guide .hb-role-grid strong,
.hb-jogger-guide .hb-test-grid strong {
  display: block;
  margin-bottom: 6px;
  color: var(--hb-ink);
  font-size: 13px;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.hb-jogger-guide .hb-opening-grid span,
.hb-jogger-guide .hb-role-grid span,
.hb-jogger-guide .hb-test-grid span {
  display: block;
  color: var(--hb-muted);
  font-size: 14px;
  line-height: 1.5;
}

/* =========================================================
   NOTES
   ========================================================= */

.hb-jogger-guide .hb-note {
  margin: 28px 0;
  padding: 22px 24px;
  border-left: 5px solid var(--hb-ink);
  background: var(--hb-soft);
}

.hb-jogger-guide .hb-note strong {
  color: var(--hb-ink);
}

/* =========================================================
   PRODUCT REFERENCES
   ========================================================= */

.hb-jogger-guide .hb-product-card {
  position: relative;
  display: grid;
  grid-template-columns:
    minmax(300px, .95fr)
    minmax(320px, 1.05fr);
  margin: 38px 0;
  overflow: hidden;
  border: 1px solid var(--hb-line);
  background: var(--hb-white);
  box-shadow: 0 12px 30px rgba(17, 17, 17, .07);
  transition:
    transform .38s ease,
    box-shadow .38s ease,
    border-color .38s ease;
}

.hb-jogger-guide .hb-product-card:hover {
  transform: translateY(-7px);
  border-color: #bdbdbd;
  box-shadow: 0 22px 44px rgba(17, 17, 17, .13);
}

.hb-jogger-guide .hb-product-card--reverse .hb-product-visual {
  order: 2;
}

.hb-jogger-guide .hb-product-card--reverse .hb-product-copy {
  order: 1;
}

.hb-jogger-guide .hb-product-visual {
  position: relative;
  display: block;
  min-height: 480px;
  overflow: hidden;
  background: #eeeeee;
  text-decoration: none;
}

.hb-jogger-guide .hb-product-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #eeeeee;
  transition:
    opacity .38s ease,
    transform .48s ease;
}

.hb-jogger-guide .hb-img-main {
  opacity: 1;
}

.hb-jogger-guide .hb-img-alt {
  opacity: 0;
}

.hb-jogger-guide .hb-product-visual:hover .hb-img-main,
.hb-jogger-guide .hb-product-visual:focus-visible .hb-img-main {
  opacity: 0;
}

.hb-jogger-guide .hb-product-visual:hover .hb-img-alt,
.hb-jogger-guide .hb-product-visual:focus-visible .hb-img-alt {
  opacity: 1;
}

.hb-jogger-guide .hb-product-visual:hover img,
.hb-jogger-guide .hb-product-visual:focus-visible img {
  transform: scale(1.02);
}

.hb-jogger-guide .hb-product-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(28px, 4vw, 50px);
}

.hb-jogger-guide .hb-eyebrow {
  margin-bottom: 10px;
  color: var(--hb-muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.hb-jogger-guide .hb-button {
  align-self: flex-start;
  display: inline-block;
  margin-top: 8px;
  padding: 12px 17px;
  border: 1px solid var(--hb-ink);
  background: var(--hb-ink);
  color: var(--hb-white) !important;
  font-size: 14px;
  text-decoration: none !important;
}

.hb-jogger-guide .hb-button:hover {
  background: var(--hb-white);
  color: var(--hb-ink) !important;
}

/* =========================================================
   OUTFIT FORMULAS
   ========================================================= */

.hb-jogger-guide .hb-formulas {
  margin: 30px 0;
  border: 1px solid var(--hb-ink);
}

.hb-jogger-guide .hb-formula {
  display: grid;
  grid-template-columns:
    150px
    minmax(260px, 1.3fr)
    minmax(230px, 1fr);
  gap: 20px;
  padding: 20px;
  border-bottom: 1px solid var(--hb-line);
}

.hb-jogger-guide .hb-formula:last-child {
  border-bottom: 0;
}

.hb-jogger-guide .hb-formula strong {
  color: var(--hb-ink);
  font-size: 14px;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.hb-jogger-guide .hb-formula span {
  color: var(--hb-muted);
  font-size: 14px;
  line-height: 1.55;
}

.hb-jogger-guide .hb-swatch-line {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--hb-ink) !important;
  font-weight: 700;
}

.hb-jogger-guide .hb-swatch {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 1px solid #777777;
  border-radius: 50%;
}

.hb-jogger-guide .hb-black {
  background: #111111;
}

.hb-jogger-guide .hb-charcoal {
  background: #4d4d4d;
}

.hb-jogger-guide .hb-grey {
  background: #ababab;
}

.hb-jogger-guide .hb-white-swatch {
  background: #ffffff;
}

/* =========================================================
   COMPARISON TABLE
   ========================================================= */

.hb-jogger-guide .hb-table-wrap {
  margin: 28px 0;
  overflow-x: auto;
}

.hb-jogger-guide table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 15px;
}

.hb-jogger-guide th,
.hb-jogger-guide td {
  padding: 15px 16px;
  border: 1px solid var(--hb-line);
  text-align: left;
  vertical-align: top;
}

.hb-jogger-guide th {
  background: var(--hb-ink);
  color: var(--hb-white);
}

/* =========================================================
   RELATED LINKS
   ========================================================= */

.hb-jogger-guide .hb-reading-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0;
}

.hb-jogger-guide .hb-reading-card {
  display: flex;
  flex-direction: column;
  min-height: 180px;
  padding: 22px;
  border: 1px solid var(--hb-line);
  background: var(--hb-white);
  text-decoration: none;
}

.hb-jogger-guide .hb-reading-card:hover {
  border-color: var(--hb-ink);
  background: var(--hb-soft);
}

.hb-jogger-guide .hb-reading-card small {
  margin-bottom: 12px;
  color: var(--hb-muted);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.hb-jogger-guide .hb-reading-card strong {
  margin-bottom: 8px;
  font-size: 18px;
  line-height: 1.3;
}

.hb-jogger-guide .hb-reading-card span {
  color: var(--hb-muted);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
}

/* =========================================================
   FAQ
   ========================================================= */

.hb-jogger-guide .hb-faq details {
  margin-bottom: 12px;
  border: 1px solid var(--hb-line);
  background: var(--hb-white);
}

.hb-jogger-guide .hb-faq summary {
  padding: 18px 20px;
  color: var(--hb-ink);
  font-weight: 700;
  cursor: pointer;
}

.hb-jogger-guide .hb-faq details p {
  margin-bottom: 0;
  padding: 0 20px 20px;
}

/* =========================================================
   FINAL ACTION
   ========================================================= */

.hb-jogger-guide .hb-final {
  margin-top: 66px;
  padding: clamp(30px, 5vw, 54px);
  border: 2px solid var(--hb-ink);
  background: var(--hb-soft);
}

.hb-jogger-guide .hb-final h2 {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 900px) {

  .hb-jogger-guide .hb-toc-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {

  .hb-jogger-guide {
    font-size: 16px;
    line-height: 1.68;
  }

  .hb-jogger-guide h2 {
    margin-top: 56px;
  }

  .hb-jogger-guide .hb-opening-grid,
  .hb-jogger-guide .hb-role-grid,
  .hb-jogger-guide .hb-test-grid,
  .hb-jogger-guide .hb-product-card,
  .hb-jogger-guide .hb-formula,
  .hb-jogger-guide .hb-reading-grid {
    grid-template-columns: 1fr;
  }

  .hb-jogger-guide .hb-opening-grid > div,
  .hb-jogger-guide .hb-role-grid > div,
  .hb-jogger-guide .hb-test-grid > div {
    border-right: 0;
    border-bottom: 1px solid var(--hb-line);
  }

  .hb-jogger-guide .hb-opening-grid > div:last-child,
  .hb-jogger-guide .hb-role-grid > div:last-child,
  .hb-jogger-guide .hb-test-grid > div:last-child {
    border-bottom: 0;
  }

  .hb-jogger-guide .hb-product-visual {
    min-height: 420px;
  }

  .hb-jogger-guide .hb-product-card:hover {
    transform: none;
  }

  .hb-jogger-guide .hb-product-card--reverse .hb-product-visual,
  .hb-jogger-guide .hb-product-card--reverse .hb-product-copy {
    order: initial;
  }
}

@media (max-width: 500px) {

  .hb-jogger-guide .hb-toc {
    padding: 15px;
  }

  .hb-jogger-guide .hb-toc-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hb-jogger-guide .hb-toc a {
    min-height: 44px;
    padding: 9px 7px;
    font-size: 12.5px;
  }

  .hb-jogger-guide .hb-product-visual {
    min-height: 360px;
  }
}

@media (hover: none) {

  .hb-jogger-guide .hb-img-alt {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {

  .hb-jogger-guide .hb-product-card,
  .hb-jogger-guide .hb-product-visual img {
    transition: none;
  }
}