/* =========================================================
   page-about —— 品牌价值
   ========================================================= */

.page-about {
  --ab-grid-ink: rgba(44, 26, 18, 0.055);
  --ab-grid-cream: rgba(246, 240, 228, 0.075);
  --ab-pad: clamp(56px, 8vw, 116px);
  background-color: var(--fx-cream);
  color: var(--fx-ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about a { color: inherit; }

/* ---------- 面包屑 ---------- */
.about-breadcrumb { margin: 0; }

.about-breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: rgba(44, 26, 18, 0.6);
}

.about-breadcrumb-list li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.about-breadcrumb-list li + li::before {
  content: "/";
  color: rgba(44, 26, 18, 0.3);
}

.about-breadcrumb-list a { text-decoration: none; }
.about-breadcrumb-list a:hover { color: var(--fx-orange); }
.about-breadcrumb-list [aria-current="page"] { color: var(--fx-ink); font-weight: 500; }

/* ---------- 首屏 ---------- */
.about-hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(34px, 6vw, 78px)) 0 clamp(46px, 7vw, 92px);
  background-color: var(--fx-cream);
  background-image:
    linear-gradient(var(--ab-grid-ink) 1px, transparent 1px),
    linear-gradient(90deg, var(--ab-grid-ink) 1px, transparent 1px);
  background-size: 72px 72px;
  border-bottom: 1px solid var(--line-ink);
}

.about-kicker {
  margin: clamp(28px, 4.6vw, 52px) 0 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fx-green);
}

.about-title {
  margin: clamp(14px, 2.4vw, 26px) 0 0;
  display: flex;
  flex-direction: column;
  font-family: var(--font-display);
  font-size: clamp(40px, 10.2vw, 126px);
  line-height: 0.94;
  letter-spacing: -0.04em;
}

.about-title-heavy { font-weight: 700; color: var(--fx-night); }
.about-title-light { font-weight: 200; color: var(--fx-orange); }

.about-hero-foot {
  margin-top: clamp(28px, 4.4vw, 56px);
  padding-top: clamp(22px, 3vw, 36px);
  border-top: 1px solid var(--line-ink);
  display: grid;
  gap: clamp(22px, 3.2vw, 44px);
}

.about-lead {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(16px, 1.35vw, 19px);
  line-height: 1.75;
  color: rgba(44, 26, 18, 0.86);
}

.about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.about-stats {
  margin: clamp(34px, 5vw, 62px) 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-ink);
  border: 1px solid var(--line-ink);
}

.about-stat {
  background-color: var(--fx-cream);
  padding: 20px 18px 22px;
}

.about-stat dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(44, 26, 18, 0.6);
}

.about-stat dd {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--fx-night);
}

.about-stat dd .mono {
  font-size: 0.88em;
  color: var(--fx-orange);
}

/* ---------- 通用标题 ---------- */
.about-h2 {
  margin: clamp(12px, 1.6vw, 18px) 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(25px, 4.1vw, 48px);
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--fx-night);
  max-width: 22ch;
}

.about-h2--night { color: var(--fx-cream); }

/* ---------- 品牌起源 ---------- */
.about-origin {
  padding: var(--ab-pad) 0;
  background-color: var(--fx-cream);
}

.about-origin-inner {
  display: grid;
  gap: clamp(30px, 4.2vw, 58px);
}

.about-origin-copy {
  margin-top: clamp(20px, 2.6vw, 30px);
  display: grid;
  gap: clamp(16px, 1.8vw, 22px);
}

.about-origin-copy p {
  margin: 0;
  max-width: 40em;
  font-size: clamp(15.5px, 1.2vw, 18px);
  line-height: 1.85;
  color: rgba(44, 26, 18, 0.86);
}

.about-dropcap::first-letter {
  float: left;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 3.6em;
  line-height: 0.8;
  margin: 0.08em 0.12em 0 0;
  color: var(--fx-orange);
}

.about-points {
  list-style: none;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-ink);
}

.about-points li {
  position: relative;
  padding: 14px 0 14px 30px;
  border-bottom: 1px solid var(--line-ink);
  font-size: clamp(14.5px, 1.05vw, 16px);
  line-height: 1.7;
  color: rgba(44, 26, 18, 0.82);
}

.about-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 23px;
  width: 14px;
  height: 2px;
  background: var(--fx-orange);
}

.about-origin-figure { margin: 0; }

.about-origin-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-ink);
  object-fit: cover;
}

.about-origin-figure figcaption {
  margin-top: 12px;
  max-width: 34ch;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(44, 26, 18, 0.56);
}

/* ---------- 品牌认证与品质服务 ---------- */
.about-cert {
  padding: var(--ab-pad) 0;
  background-color: var(--fx-night);
  background-image:
    linear-gradient(var(--ab-grid-cream) 1px, transparent 1px),
    linear-gradient(90deg, var(--ab-grid-cream) 1px, transparent 1px);
  background-size: 72px 72px;
  color: var(--fx-cream);
}

.about-cert .eyebrow { color: var(--fx-gold); }

.about-cert-head {
  display: grid;
  gap: clamp(16px, 2.4vw, 34px);
}

.about-cert-lead {
  margin: 0;
  max-width: 42em;
  font-size: clamp(15.5px, 1.25vw, 18px);
  line-height: 1.85;
  color: rgba(246, 240, 228, 0.78);
}

.about-cert-body {
  margin-top: clamp(34px, 5vw, 62px);
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.about-cert-figure { margin: 0; }

.about-cert-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-cream);
  object-fit: cover;
}

.about-badges {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-cream);
}

.about-badge {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px 20px;
  padding: 22px 0 24px;
  border-bottom: 1px solid var(--line-cream);
  transition: background-color 0.35s ease, padding-left 0.35s ease, padding-right 0.35s ease;
}

.about-badge:hover {
  background-color: rgba(201, 162, 39, 0.09);
  padding-left: 16px;
  padding-right: 16px;
}

.about-badge-mark {
  width: 46px;
  height: 46px;
  color: var(--fx-gold);
}

.about-badge h3 {
  margin: 0;
  align-self: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(16px, 1.4vw, 20px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--fx-cream);
}

.about-badge p {
  grid-column: 2;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(246, 240, 228, 0.7);
}

/* ---------- 发展历程 ---------- */
.about-timeline {
  padding: var(--ab-pad) 0;
  background-color: var(--fx-cream);
  border-bottom: 1px solid var(--line-ink);
}

.about-timeline-grid {
  margin-top: clamp(34px, 5vw, 64px);
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

.about-timeline-index { display: none; }

.about-timeline-index ol {
  list-style: none;
  margin: 0;
  padding: 0 0 0 16px;
  border-left: 1px solid var(--line-ink);
  display: grid;
  gap: 28px;
}

.about-timeline-index li {
  position: relative;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(44, 26, 18, 0.42);
}

.about-timeline-index li::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 5px;
  width: 7px;
  height: 7px;
  background: rgba(44, 26, 18, 0.22);
}

.about-timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(26px, 3.6vw, 46px);
}

.about-milestone {
  border-top: 2px solid var(--fx-night);
  padding-top: 20px;
  display: grid;
  gap: 12px;
}

.about-milestone-year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.8vw, 34px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fx-orange);
}

.about-milestone-body h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(17px, 1.6vw, 22px);
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--fx-night);
}

.about-milestone-body p {
  margin: 10px 0 0;
  max-width: 52ch;
  font-size: clamp(14.5px, 1.1vw, 16.5px);
  line-height: 1.8;
  color: rgba(44, 26, 18, 0.76);
}

/* ---------- 团队 ---------- */
.about-team {
  padding: var(--ab-pad) 0;
  background-color: var(--fx-green-soft);
  color: var(--fx-ink);
}

.about-team .eyebrow { color: var(--fx-night); }

.about-team-grid {
  margin-top: clamp(30px, 4.6vw, 58px);
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.about-team-figure { margin: 0; }

.about-team-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(11, 27, 51, 0.22);
  object-fit: cover;
}

.about-team-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(11, 27, 51, 0.66);
}

.about-team-nums {
  list-style: none;
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(11, 27, 51, 0.18);
  border: 1px solid rgba(11, 27, 51, 0.18);
}

.about-team-nums li {
  background-color: var(--fx-green-soft);
  padding: 18px 16px 20px;
}

.about-team-nums .num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--fx-night);
}

.about-team-nums .lbl {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(11, 27, 51, 0.68);
}

/* ---------- 合作生态与荣誉 ---------- */
.about-eco {
  padding: var(--ab-pad) 0;
  background-color: var(--fx-cream);
}

.about-eco-grid {
  margin-top: clamp(30px, 4.4vw, 56px);
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-ink);
}

.about-eco-item {
  padding: clamp(22px, 2.8vw, 34px) 0;
  border-bottom: 1px solid var(--line-ink);
}

.about-eco-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(30px, 3.8vw, 46px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--fx-green);
}

.about-eco-item h3 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--fx-night);
}

.about-eco-item p {
  margin: 10px 0 0;
  max-width: 32ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(44, 26, 18, 0.74);
}

.about-honor {
  margin-top: clamp(32px, 4.4vw, 56px);
  padding-top: clamp(26px, 3.4vw, 42px);
  border-top: 1px solid var(--line-ink);
  display: grid;
  gap: clamp(20px, 2.6vw, 34px);
}

.about-honor-quote {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(22px, 3vw, 38px);
  line-height: 1.26;
  letter-spacing: -0.03em;
  color: var(--fx-night);
}

.about-honor-quote strong {
  font-weight: 700;
  color: var(--fx-orange);
}

.about-honor-body p {
  margin: 0 0 14px;
  max-width: 46ch;
  font-size: clamp(14.5px, 1.1vw, 16.5px);
  line-height: 1.85;
  color: rgba(44, 26, 18, 0.78);
}

.about-honor-body p:last-child { margin-bottom: 0; }

/* ---------- 结尾 CTA ---------- */
.about-cta {
  position: relative;
  overflow: hidden;
  padding: var(--ab-pad) 0;
  background-color: var(--fx-night);
  color: var(--fx-cream);
}

.about-cta::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -42%;
  width: min(560px, 64vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(232, 72, 28, 0.5), rgba(232, 72, 28, 0) 68%);
  pointer-events: none;
}

.about-cta-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 3.4vw, 44px);
}

.about-cta-lead {
  margin: clamp(16px, 2vw, 24px) 0 0;
  max-width: 44em;
  font-size: clamp(15.5px, 1.2vw, 17.5px);
  line-height: 1.85;
  color: rgba(246, 240, 228, 0.74);
}

.about-cta-actions {
  margin-top: clamp(22px, 2.8vw, 34px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta .btn-outline {
  border-color: rgba(246, 240, 228, 0.45);
  color: var(--fx-cream);
}

.page-about .about-cta .btn-outline:hover {
  border-color: var(--fx-gold);
  color: var(--fx-gold);
}

.about-cta-note {
  margin: clamp(18px, 2.2vw, 26px) 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(246, 240, 228, 0.62);
}

.about-cta-note a {
  color: var(--fx-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 39, 0.5);
}

.about-cta-note a:hover { border-bottom-color: var(--fx-gold); }

.about-cta-contact {
  margin: 0;
  padding-top: clamp(22px, 2.8vw, 32px);
  border-top: 1px solid var(--line-cream);
  font-size: 14.5px;
  line-height: 2;
  color: rgba(246, 240, 228, 0.66);
}

.about-cta-contact a {
  color: var(--fx-cream);
  text-decoration: none;
  border-bottom: 1px solid rgba(246, 240, 228, 0.35);
}

.about-cta-contact a:hover {
  color: var(--fx-gold);
  border-bottom-color: var(--fx-gold);
}

.about-cta-contact .mono { color: var(--fx-gold); }

/* ---------- 显现协议（渐进增强） ---------- */
.js-ready .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.js-ready .page-about [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* =========================================================
   断点：桌面
   ========================================================= */

@media (min-width: 700px) {
  .about-milestone {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 0 clamp(24px, 3.4vw, 48px);
    align-items: start;
  }
}

@media (min-width: 760px) {
  .about-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .about-badges {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 820px) {
  .about-eco-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

  .about-eco-item {
    padding: clamp(24px, 2.6vw, 36px) clamp(20px, 2.4vw, 34px);
    border-right: 1px solid var(--line-ink);
  }

  .about-eco-item:first-child { padding-left: 0; }
  .about-eco-item:last-child { padding-right: 0; border-right: 0; }

  .about-honor {
    grid-template-columns: minmax(0, 0.55fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .about-hero-foot {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: end;
  }

  .about-cert-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(34px, 5vw, 72px);
    align-items: start;
  }

  .about-cta-inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: end;
  }
}

@media (min-width: 920px) {
  .about-origin-inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(40px, 5.5vw, 84px);
    align-items: start;
  }

  .about-cert-body {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: clamp(34px, 4.4vw, 60px);
    align-items: start;
  }

  .about-timeline-grid {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: clamp(34px, 5vw, 80px);
  }

  .about-timeline-index {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 46px);
    align-self: start;
  }

  .about-team-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    gap: clamp(36px, 4.6vw, 64px);
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .about-team-nums { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .js-ready .page-about [data-reveal],
  .js-ready .page-about [data-reveal].is-revealed {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .about-badge { transition: none; }
}