:root {
  --ink: #141612;
  --ink-soft: #373d35;
  --muted: #73796f;
  --paper: #f5eee4;
  --ivory: #fffaf2;
  --warm: #e7d8c0;
  --jade: #1d463b;
  --jade-deep: #0e1915;
  --gold: #b89256;
  --wine: #5b2d3a;
  --line: rgba(20, 22, 18, .14);
  --line-light: rgba(255, 255, 255, .2);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  line-height: 1.7;
  letter-spacing: 0;
  overflow-x: hidden;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  min-height: 76px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 52px;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, .16);
  background: rgba(14, 19, 16, .48);
  backdrop-filter: blur(18px);
}

.company-mini {
  justify-self: start;
  color: rgba(255, 255, 255, .72);
  font-size: 13px;
  white-space: nowrap;
}

.brand-logo {
  justify-self: center;
  display: grid;
  grid-template-columns: auto auto;
  column-gap: 10px;
  row-gap: 1px;
  align-items: center;
  text-align: left;
}

.brand-mark {
  grid-row: 1 / span 2;
  width: 54px;
  height: 22px;
  margin: 0;
  object-fit: contain;
}

.brand-logo strong,
h1,
h2,
h3,
.serif {
  font-family: "STSong", "SimSun", "Noto Serif SC", serif;
  font-weight: 400;
  letter-spacing: 0;
}

.brand-logo strong {
  color: #fff;
  font-size: 24px;
  line-height: 1.1;
}

.brand-logo span {
  grid-column: 2;
  color: rgba(255, 255, 255, .58);
  font-size: 10px;
  text-transform: uppercase;
}

.nav {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 20px;
  color: rgba(255, 255, 255, .78);
  font-size: 13px;
}

.nav a:hover,
.nav a.active,
.nav-menu[open] summary,
.nav-menu summary:hover { color: #fff; }

.nav-menu {
  display: none;
  position: relative;
}

.nav-menu summary {
  cursor: pointer;
  list-style: none;
  color: rgba(255, 255, 255, .78);
  user-select: none;
}

.nav-menu summary::-webkit-details-marker {
  display: none;
}

.nav-menu summary::after {
  content: "+";
  margin-left: 7px;
  color: rgba(255, 255, 255, .5);
  font-size: 12px;
}

.nav-menu[open] summary::after {
  content: "-";
  color: #d8bb7c;
}

.nav-dropdown {
  position: absolute;
  top: 30px;
  right: 0;
  min-width: 190px;
  display: grid;
  gap: 2px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, .18);
  background: rgba(14, 19, 16, .96);
  box-shadow: 0 22px 50px rgba(0, 0, 0, .24);
}

.nav-dropdown a {
  padding: 9px 10px;
  color: rgba(255, 255, 255, .74);
  white-space: nowrap;
}

.nav-dropdown a:hover,
.nav-dropdown a.active {
  color: #fff;
  background: rgba(255, 255, 255, .06);
}

.sub-hero {
  position: relative;
  min-height: 76vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
  background: var(--jade-deep);
}

.sub-hero-media {
  position: absolute;
  inset: 0;
}

.sub-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 12, 10, .86) 0%, rgba(7, 12, 10, .58) 48%, rgba(7, 12, 10, .2) 100%),
    linear-gradient(180deg, rgba(7, 12, 10, .08) 0%, rgba(7, 12, 10, .74) 100%);
}

.sub-hero-inner {
  position: relative;
  z-index: 2;
  width: min(1220px, calc(100% - 72px));
  margin: 0 auto;
  padding: 145px 0 68px;
}

.section-label {
  margin: 0 0 18px;
  color: #dec188;
  font-size: 13px;
  font-weight: 700;
}

h1 {
  margin: 0;
  max-width: 930px;
  font-size: clamp(54px, 8vw, 112px);
  line-height: .98;
}

.hero-copy {
  max-width: 620px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, .76);
  font-size: 17px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border: 1px solid currentColor;
  font-size: 13px;
  font-weight: 700;
}

.btn.gold {
  color: #22170c;
  border-color: var(--gold);
  background: var(--gold);
}

.btn.light {
  color: rgba(255, 255, 255, .92);
  border-color: rgba(255, 255, 255, .48);
}

.section {
  padding: 112px 0;
}

.section.ivory { background: var(--ivory); }
.section.warm { background: var(--warm); }
.section.dark {
  color: #fff;
  background: var(--ink);
}

.container {
  width: min(1220px, calc(100% - 72px));
  margin: 0 auto;
}

.section-title {
  margin: 0;
  font-size: clamp(38px, 5.2vw, 76px);
  line-height: 1.08;
}

.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 84px;
  align-items: start;
}

.copy-block {
  display: grid;
  gap: 24px;
  color: var(--ink-soft);
  font-size: 17px;
}

.copy-block p { margin: 0; }

.section-intro {
  margin-bottom: 54px;
}

.hairline {
  height: 1px;
  background: var(--line);
}

.value-grid,
.case-grid,
.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.brand-proof-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.value-card,
.case-card,
.proof-card {
  min-height: 300px;
  padding: 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 250, 242, .5);
}

.value-card span,
.case-card span,
.proof-card span,
.timeline-item span {
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
}

.value-card h3,
.proof-card h3 {
  margin: 80px 0 12px;
  font-size: 31px;
  line-height: 1.16;
}

.value-card p,
.proof-card p,
.case-card p,
.timeline-item p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.image-panel {
  position: relative;
  min-height: 0;
  aspect-ratio: 4 / 3;
  background: var(--ivory);
  overflow: hidden;
}

.image-panel img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  object-fit: cover;
  object-position: center;
}

.image-panel.portrait {
  aspect-ratio: 4 / 5;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.timeline-item {
  min-height: 280px;
  padding: 28px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 250, 242, .48);
}

.timeline-item h3 {
  margin: 72px 0 12px;
  font-size: 28px;
  line-height: 1.16;
}

.case-card {
  display: grid;
  grid-template-rows: 250px auto;
  padding: 0;
  overflow: hidden;
}

.case-card img {
  object-position: center;
}

.case-body {
  display: grid;
  gap: 12px;
  padding: 26px 24px 28px;
}

.case-card h3 {
  margin: 4px 0 0;
  font-size: 30px;
  line-height: 1.16;
}

.feedback-archive-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
}

.feedback-archive-card {
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  background: #f8f1e7;
  box-shadow: 0 20px 60px rgba(20, 22, 18, .08);
  overflow: hidden;
}

.feedback-archive-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 1080 / 1380;
  max-height: 620px;
  object-fit: contain;
  background: #f3eadf;
  border-bottom: 1px solid var(--line);
}

.feedback-archive-card {
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}

.feedback-archive-card:hover {
  transform: translateY(-4px);
  border-color: rgba(184, 146, 86, .46);
  box-shadow: 0 26px 72px rgba(20, 22, 18, .12);
}

.feedback-detail-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 2px;
  padding-top: 15px;
  border-top: 1px solid var(--line);
  color: var(--jade);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
}

.feedback-detail-link::after {
  content: "\2192";
  color: var(--gold);
  font-size: 18px;
  transition: transform .22s ease;
}

.feedback-detail-link:hover::after {
  transform: translateX(4px);
}

.case-detail-hero {
  min-height: 760px;
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  padding-top: 76px;
  background: var(--ivory);
}

.case-detail-media {
  min-height: 684px;
  background: #eee4d7;
  border-right: 1px solid var(--line);
}

.case-detail-media img {
  object-fit: contain;
  background: #f3eadf;
}

.case-detail-copy {
  align-self: center;
  max-width: 720px;
  padding: 84px clamp(42px, 7vw, 112px);
}

.case-detail-copy h1 {
  margin: 18px 0 26px;
  color: var(--ink);
  font-size: clamp(48px, 6.2vw, 88px);
  line-height: 1.03;
}

.case-detail-copy .lead {
  margin: 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.9;
}

.case-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.case-fact {
  min-height: 220px;
  padding: 32px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 250, 242, .55);
}

.case-fact b {
  display: block;
  margin-bottom: 38px;
  color: var(--gold);
  font-size: 13px;
}

.case-fact p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
}

.case-pagination {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
}

.case-pagination a {
  min-height: 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px 28px;
  background: rgba(255, 250, 242, .52);
}

.case-pagination a + a {
  border-left: 1px solid var(--line);
}

.case-pagination small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.case-pagination strong {
  font-weight: 500;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.feedback-archive-body {
  display: grid;
  gap: 16px;
  padding: 24px;
}

.feedback-archive-kicker {
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
}

.feedback-archive-body h3 {
  margin: 0;
  font-size: 28px;
  line-height: 1.16;
}

.feedback-archive-body p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.archive-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  padding-top: 4px;
}

.archive-points div {
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.archive-points b {
  display: block;
  margin-bottom: 4px;
  color: var(--wine);
  font-size: 13px;
}

.archive-points span {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.discreet-details {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

.discreet-details summary {
  cursor: pointer;
  color: var(--ink-soft);
  font-weight: 700;
}

.discreet-details p {
  margin: 12px 0 0;
  color: var(--muted);
}

.note-list {
  display: grid;
  gap: 12px;
  margin-top: 4px;
}

.note-list div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 14px;
  color: var(--muted);
  font-size: 14px;
}

.note-list b {
  color: var(--wine);
}

.faq-list {
  display: grid;
  gap: 18px;
}

.faq-item {
  padding: 30px;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  background: rgba(255, 250, 242, .58);
}

.faq-item h2 {
  margin: 0 0 14px;
  color: var(--ink);
  font-size: 28px;
  line-height: 1.2;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.cta-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
  padding: 44px 0 0;
  border-top: 1px solid var(--line-light);
}

.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.cta-panel p {
  max-width: 620px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, .68);
}

.site-footer {
  padding: 34px 0;
  color: rgba(255, 255, 255, .58);
  background: #0b0f0d;
  font-size: 13px;
}

.footer-inner {
  width: min(1220px, calc(100% - 72px));
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 30px;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}

.footer-links a {
  color: rgba(255, 255, 255, .76);
}

@media (max-width: 980px) {
  .site-header {
    display: flex;
    justify-content: space-between;
    min-height: 66px;
    padding: 12px 20px;
  }

  .company-mini {
    display: none;
  }

  .nav {
    position: fixed;
    top: 12px;
    left: clamp(232px, 70vw, calc(100vw - 76px));
    right: auto;
    z-index: 40;
    justify-self: auto;
    gap: 13px;
    font-size: 12px;
  }

  .nav > a {
    display: none;
  }

  .nav-menu {
    display: block;
  }

  .nav-menu summary {
    min-width: 44px;
    display: block;
    padding: 7px 9px;
    color: #fff;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, .36);
  }

  .nav-dropdown {
    position: fixed;
    top: 66px;
    left: 14px;
    right: 14px;
    width: auto;
    min-width: 0;
    max-height: calc(100vh - 84px);
    overflow-y: auto;
    padding: 12px;
  }

  .nav-dropdown a {
    padding: 14px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, .1);
  }

  .nav-dropdown a:last-child {
    border-bottom: 0;
  }

  .brand-logo {
    justify-self: start;
    min-height: 44px;
    padding: 6px 0;
  }

  .nav-menu summary {
    min-width: 56px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 10px;
  }

  .nav-dropdown a,
  .feedback-detail-link,
  .feedback-link,
  .faq-item a,
  .note-list a,
  .footer-links a,
  .footer-links span,
  .discreet-details summary {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .sub-hero {
    min-height: 720px;
  }

  .sub-hero-inner,
  .container,
  .footer-inner {
    width: calc(100% - 34px);
  }

  .sub-hero-inner {
    padding: 124px 0 54px;
  }

  .hero-copy {
    font-size: 16px;
  }

  .section {
    padding: 78px 0;
  }

  .split,
  .value-grid,
  .case-grid,
  .feedback-archive-grid,
  .proof-grid,
  .timeline,
  .cta-panel {
    grid-template-columns: 1fr;
  }

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

  .image-panel {
    min-height: 0;
    aspect-ratio: 4 / 3;
  }

  .value-card,
  .proof-card,
  .timeline-item {
    min-height: 220px;
  }

  .value-card h3,
  .proof-card h3,
  .timeline-item h3 {
    margin-top: 42px;
  }

  .case-card {
    grid-template-rows: 260px auto;
  }

  .cta-panel {
    align-items: start;
  }

  .cta-actions {
    justify-content: flex-start;
  }

  .case-detail-hero {
    min-height: 0;
    grid-template-columns: 1fr;
    padding-top: 72px;
  }

  .case-detail-media {
    min-height: 0;
    aspect-ratio: 1080 / 1380;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .case-detail-copy {
    max-width: none;
    padding: 64px 28px 72px;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding: 12px 16px;
    min-height: 64px;
  }

  .brand-logo strong {
    font-size: 20px;
  }

  .brand-mark {
    width: 44px;
    height: 18px;
  }

  .brand-logo span {
    display: none;
  }

  .nav {
    gap: 10px;
  }

  h1 {
    font-size: 46px;
  }

  .section-title {
    font-size: 38px;
  }

  .section {
    padding: 72px 0;
  }

  .hero-copy,
  .case-detail-copy .lead {
    font-size: 15px;
  }

  .btn {
    min-height: 48px;
    font-size: 14px;
  }

  .feedback-archive-grid {
    gap: 22px;
  }

  .feedback-archive-body {
    padding: 22px 20px;
  }

  .feedback-archive-kicker {
    font-size: 13px;
  }

  .case-detail-copy h1 {
    font-size: 44px;
  }

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

  .case-fact {
    min-height: 0;
  }

  .case-fact b {
    margin-bottom: 18px;
  }

  .case-pagination a + a {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .note-list div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .archive-points {
    grid-template-columns: 1fr;
  }
}


.official-identity-note{position:relative;z-index:2;max-width:1180px;margin:78px auto -42px;padding:0 28px;color:rgba(34,39,32,.74);font-size:13px;line-height:1.9;letter-spacing:.02em}.official-identity-note p{margin:0;border-left:1px solid rgba(168,134,73,.45);padding-left:14px}.official-identity-note strong{font-weight:600;color:#1b211c}@media(max-width:760px){.official-identity-note{margin:64px auto -32px;padding:0 20px;font-size:12px;line-height:1.8}}