:root {
  --ink: #171817;
  --muted: #626762;
  --paper: #f5f6f2;
  --surface: #ffffff;
  --surface-warm: #fff8ed;
  --surface-cool: #eef4f1;
  --line: rgba(23, 24, 23, 0.12);
  --line-strong: rgba(23, 24, 23, 0.2);
  --gold: #bd8f2f;
  --gold-ink: #76530f;
  --gold-light: #d6a84f;
  --red: #9a3f32;
  --teal: #176f68;
  --green: #596f3f;
  --charcoal: #171817;
  --white: #ffffff;
  --focus: rgba(23, 111, 104, 0.28);
  --shadow-sm: 0 10px 26px rgba(23, 24, 23, 0.08);
  --shadow-lg: 0 24px 70px rgba(23, 24, 23, 0.16);
  --radius: 8px;
  --header-height: 76px;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

button {
  touch-action: manipulation;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--white);
  background: var(--teal);
  border-radius: var(--radius);
  transform: translateY(-140%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  padding: 16px clamp(20px, 5vw, 72px);
  color: var(--white);
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.site-header.is-scrolled,
.site-header.nav-active {
  color: var(--ink);
  background: rgba(245, 246, 242, 0.95);
  box-shadow: 0 12px 36px rgba(23, 24, 23, 0.1);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #241b0d;
  background: var(--gold);
  border-radius: 50%;
  font-weight: 800;
}

.brand-mark-image {
  overflow: hidden;
  background: transparent;
  border-radius: 0;
}

.brand-mark-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transform: scale(1.7);
  transform-origin: center top;
}

.brand strong,
.brand small {
  display: block;
  white-space: nowrap;
}

.brand strong {
  font-size: 17px;
  line-height: 1.25;
}

.brand small {
  margin-top: 2px;
  color: currentColor;
  font-size: 10px;
  letter-spacing: 0;
  opacity: 0.72;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 30px);
  font-size: 14px;
}

.site-nav a {
  position: relative;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: currentColor;
}

.site-nav a::after {
  position: absolute;
  left: 0;
  bottom: 8px;
  width: 0;
  height: 2px;
  content: "";
  background: var(--gold);
  transition: width 0.2s ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid currentColor;
  border-radius: 50%;
  color: inherit;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
  transition: transform 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

.hero {
  position: relative;
  display: flex;
  align-items: end;
  min-height: 92vh;
  padding: 124px clamp(20px, 6vw, 88px) 56px;
  color: var(--white);
  overflow: hidden;
}

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

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.08);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(14, 15, 14, 0.9) 0%, rgba(14, 15, 14, 0.58) 48%, rgba(14, 15, 14, 0.22) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.14), rgba(0, 0, 0, 0.72));
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: min(100%, 1260px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold-ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow,
.showcase .eyebrow,
.vision .eyebrow {
  color: var(--gold-light);
}

.hero h1 {
  max-width: none;
  margin: 0;
  font-size: clamp(42px, 5.4vw, 72px);
  line-height: 1.07;
  font-weight: 800;
  white-space: nowrap;
}

.hero-copy {
  max-width: 720px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.85;
}

.hero-copy span {
  display: block;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: #241b0d;
  background: var(--gold);
  box-shadow: 0 12px 28px rgba(189, 143, 47, 0.32);
}

.button.primary:hover {
  background: #d0a242;
}

.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.1);
}

.button.secondary:hover {
  border-color: rgba(255, 255, 255, 0.76);
  background: rgba(255, 255, 255, 0.16);
}

.button.ghost {
  color: var(--ink);
  border-color: var(--line-strong);
  background: transparent;
}

.button.ghost:hover {
  border-color: var(--gold);
  background: rgba(189, 143, 47, 0.08);
}

.notice {
  display: grid;
  grid-template-columns: minmax(170px, 0.28fr) minmax(0, 1fr);
  gap: 36px;
  align-items: start;
  padding: 34px clamp(20px, 6vw, 88px);
  border-bottom: 1px solid var(--line);
  background: var(--surface-warm);
}

.notice-label {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.notice-label span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  color: #241b0d;
  background: var(--gold);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.notice-label time {
  color: var(--muted);
  font-size: 14px;
}

.notice-body h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.25;
}

.notice-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: rgba(189, 143, 47, 0.5);
  text-underline-offset: 6px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

.notice-link:hover {
  color: var(--gold-ink);
  text-decoration-color: currentColor;
}

.notice-body p {
  max-width: 980px;
  margin: 0;
  color: var(--muted);
  line-height: 1.85;
}

.section {
  padding: 92px clamp(20px, 6vw, 88px);
}

.section-head {
  max-width: 780px;
  margin-bottom: 38px;
}

.section-head.split {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.7fr);
  gap: 36px;
  max-width: none;
  align-items: end;
}

.section-head h2,
.showcase-content h2,
.vision h2,
.contact h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 50px);
  line-height: 1.18;
}

.section-head p:not(.eyebrow):last-child,
.showcase-content p:not(.eyebrow),
.vision p:not(.eyebrow),
.contact-info p:not(.eyebrow),
.intro-text p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
}

.intro {
  background: var(--paper);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(380px, 0.85fr);
  gap: clamp(34px, 5vw, 74px);
  align-items: start;
}

.intro-text {
  display: grid;
  gap: 18px;
  max-width: 860px;
}

.intro-text p {
  margin: 0;
  font-size: 18px;
}

.brand-tree {
  display: grid;
  gap: 22px;
  min-height: 330px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(255, 248, 237, 0.9), rgba(238, 244, 241, 0.92)),
    var(--surface);
  box-shadow: var(--shadow-sm);
}

.brand-tree-head {
  display: grid;
  gap: 8px;
}

.brand-tree-head span {
  color: var(--gold-ink);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.client-logo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  align-items: stretch;
}

.client-logo-card {
  display: grid;
  grid-template-rows: minmax(96px, 1fr) auto;
  gap: 14px;
  align-items: center;
  min-height: 168px;
  padding: 18px 14px;
  border: 1px solid rgba(23, 24, 23, 0.1);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 10px 24px rgba(23, 24, 23, 0.07);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.client-logo-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 38px rgba(23, 24, 23, 0.12);
}

.client-logo-card img {
  width: 100%;
  max-height: 88px;
  object-fit: contain;
  justify-self: center;
}

.client-logo-card span {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-align: center;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  padding-top: 0;
  padding-bottom: 0;
  background: var(--charcoal);
}

.metric-item {
  min-height: 210px;
  padding: 38px 24px;
  color: var(--white);
  background: #22231f;
}

.metric-item:nth-child(2) {
  background: #26241f;
}

.metric-item:nth-child(3) {
  background: #1e2c2a;
}

.metric-item:nth-child(4) {
  background: #2d2522;
}

.metric-item strong {
  display: block;
  color: var(--gold);
  font-size: clamp(42px, 5vw, 72px);
  line-height: 1;
}

.metric-item span {
  display: block;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.8);
}

.services {
  background: var(--surface-cool);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.service-card {
  min-height: 300px;
  padding: 28px;
  border: 1px solid rgba(23, 24, 23, 0.1);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 1px 0 rgba(23, 24, 23, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  margin-bottom: 42px;
  color: var(--white);
  background: var(--red);
  border-radius: 50%;
  font-weight: 800;
}

.service-card:nth-child(2) .service-icon {
  background: var(--teal);
}

.service-card:nth-child(3) .service-icon {
  background: var(--green);
}

.service-card:nth-child(4) .service-icon {
  color: #241b0d;
  background: var(--gold);
}

.service-card h3,
.timeline h3 {
  margin: 0 0 14px;
  font-size: 22px;
  line-height: 1.3;
}

.service-card p,
.timeline p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.showcase {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(0, 1.1fr);
  min-height: 680px;
  color: var(--white);
  background: #171817;
}

.showcase-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.showcase-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(46px, 7vw, 96px);
}

.showcase-content p {
  color: rgba(255, 255, 255, 0.78);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.tag-list span {
  padding: 9px 13px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.84);
  background: rgba(255, 255, 255, 0.07);
}

.process {
  background: var(--paper);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}

.timeline article {
  position: relative;
  padding: 38px 28px 0 0;
}

.timeline article::before {
  position: absolute;
  top: -7px;
  left: 0;
  width: 13px;
  height: 13px;
  content: "";
  background: var(--gold);
  border-radius: 50%;
}

.timeline span {
  display: block;
  margin-bottom: 24px;
  color: var(--gold);
  font-weight: 800;
}

.vision {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1fr);
  gap: 0;
  align-items: stretch;
  color: var(--white);
  background: #1d2d2a;
}

.vision div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(46px, 7vw, 96px);
}

.vision p {
  color: rgba(255, 255, 255, 0.78);
}

.vision img {
  width: 100%;
  height: 100%;
  min-height: 480px;
  object-fit: cover;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 560px);
  gap: 56px;
  background: var(--surface-warm);
}

.contact-info address {
  display: grid;
  gap: 14px;
  margin-top: 34px;
  font-style: normal;
  color: var(--muted);
}

.contact-info address span {
  padding-left: 18px;
  border-left: 3px solid var(--gold);
}

.contact-form {
  display: grid;
  gap: 18px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.contact-form label span {
  font-weight: 700;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  min-height: 48px;
  padding: 13px 14px;
  color: var(--ink);
  border: 1px solid rgba(23, 24, 23, 0.18);
  border-radius: var(--radius);
  background: #fffdf8;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  border-color: var(--teal);
  background: var(--white);
  box-shadow: 0 0 0 4px var(--focus);
}

.form-note {
  min-height: 22px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.form-note.is-success {
  color: var(--teal);
  font-weight: 700;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 6vw, 88px);
  color: rgba(255, 255, 255, 0.74);
  background: #151615;
}

.site-footer div {
  display: grid;
  gap: 6px;
}

.site-footer strong {
  color: var(--white);
}

.site-footer a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--gold);
  white-space: nowrap;
}

.notice-page-header {
  color: var(--ink);
}

.notice-page-main {
  min-height: 72vh;
  padding: calc(var(--header-height) + 74px) clamp(20px, 6vw, 88px) 92px;
  background:
    linear-gradient(135deg, rgba(255, 248, 237, 0.9), rgba(238, 244, 241, 0.9)),
    var(--paper);
}

.notice-detail {
  max-width: 980px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 58px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-sm);
}

.notice-breadcrumb {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 14px;
}

.notice-breadcrumb a:hover {
  color: var(--gold-ink);
}

.notice-detail-head h1 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.16;
}

.notice-detail-head time {
  display: block;
  margin-top: 18px;
  color: var(--muted);
}

.notice-detail-body {
  display: grid;
  gap: 18px;
  margin-top: 38px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.95;
}

.notice-detail-body p {
  margin: 0;
}

.notice-detail-body h2 {
  margin: 10px 0 0;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.35;
}

.notice-detail-body ol,
.notice-detail-body ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 1.4em;
}

.notice-detail-body ol {
  list-style: decimal;
}

.notice-detail-body ul {
  list-style: disc;
}

.notice-detail-body li {
  padding-left: 4px;
}

.notice-detail-body a {
  color: var(--gold-ink);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.notice-image {
  margin: 18px 0 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.notice-image img {
  width: 100%;
  border-radius: calc(var(--radius) - 2px);
}

.notice-image figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.notice-detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 40px;
}

@media (max-width: 1080px) {
  .hero,
  .notice,
  .intro-grid,
  .section-head.split,
  .contact {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .metrics,
  .timeline {
    grid-template-columns: repeat(2, 1fr);
  }

  .showcase,
  .vision {
    grid-template-columns: 1fr;
  }

  .showcase-image {
    max-height: 560px;
    overflow: hidden;
  }

  .brand-tree {
    min-height: 380px;
  }
}

@media (max-width: 760px) {
  :root {
    --header-height: 68px;
  }

  .site-header {
    padding: 12px 18px;
  }

  .brand {
    gap: 10px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand strong {
    max-width: 9em;
    overflow: hidden;
    font-size: 15px;
    text-overflow: ellipsis;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-height) 0 auto;
    display: grid;
    gap: 0;
    max-height: calc(100vh - var(--header-height));
    padding: 12px 18px 22px;
    overflow-y: auto;
    color: var(--ink);
    background: rgba(245, 246, 242, 0.98);
    box-shadow: 0 20px 40px rgba(23, 24, 23, 0.12);
    transform: translateY(-130%);
    transition: transform 0.25s ease;
  }

  .site-nav.is-open {
    transform: translateY(0);
  }

  .site-nav a {
    min-height: 48px;
    padding: 0;
    border-bottom: 1px solid var(--line);
  }

  .site-nav a::after {
    bottom: 6px;
  }

  .hero {
    min-height: auto;
    padding: 118px 20px 42px;
  }

  .hero h1 {
    font-size: clamp(36px, 12vw, 54px);
    white-space: normal;
  }

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

  .hero-actions {
    gap: 10px;
  }

  .hero-actions .button {
    flex: 1 1 150px;
  }

  .section {
    padding: 66px 20px;
  }

  .notice {
    padding: 28px 20px;
    gap: 18px;
  }

  .brand-tree {
    min-height: 0;
    padding: 20px;
  }

  .client-logo-grid {
    grid-template-columns: 1fr;
  }

  .client-logo-card {
    min-height: 138px;
  }

  .service-grid,
  .metrics,
  .timeline {
    grid-template-columns: 1fr;
  }

  .metric-item {
    min-height: 150px;
  }

  .contact-form {
    padding: 22px;
  }

  .showcase {
    min-height: auto;
  }

  .showcase-content,
  .vision div {
    padding: 56px 20px;
  }

  .vision img {
    min-height: 300px;
  }

  .site-footer {
    display: grid;
    padding: 26px 20px;
  }

  .notice-page-main {
    padding: calc(var(--header-height) + 42px) 20px 66px;
  }

  .notice-detail-body {
    font-size: 16px;
  }
}

@media (max-width: 420px) {
  .brand small {
    display: none;
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .button:hover,
  .service-card:hover {
    transform: none;
  }
}