:root {
  --color-vermilion: #D23A3A;
  --color-gold: #D4AF37;
  --color-ink: #1A1A1A;
  --color-cream: #FAF0E6;
  --color-navy: #1B2A4A;
  --color-warm-gray: #4A4A4A;
  --color-bright-gold: #FFD700;
  --color-smoke: #F5F5F5;
  --color-white: #FFFFFF;
  --font-head: "Noto Serif SC", "STZhongsong", "Songti SC", "SimSun", serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  --content-max: 1280px;
  --radius-cut: 6px 18px 6px 18px;
  --shadow-book: 0 8px 24px rgba(26, 26, 26, .08);
  --shadow-hard: 6px 6px 0 rgba(26, 26, 26, .85);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-cream);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 .6em;
  font-family: var(--font-head);
  line-height: 1.25;
  color: var(--color-ink);
  font-weight: 900;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.6rem; }
h4 { font-size: 1.3rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
  margin: 0 0 1rem;
}

a {
  color: var(--color-navy);
}

ul,
ol {
  padding-left: 1.2rem;
  margin: 0 0 1rem;
}

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

button {
  font-family: inherit;
}

::selection {
  background: var(--color-gold);
  color: var(--color-ink);
}

:focus-visible {
  outline: 3px solid var(--color-bright-gold);
  outline-offset: 3px;
  border-radius: 2px;
}

.container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.container-narrow {
  max-width: 860px;
  margin-inline: auto;
}

.content-body {
  max-width: 78ch;
}

.skip-link {
  position: fixed;
  top: -4rem;
  left: 1rem;
  z-index: 6000;
  background: var(--color-ink);
  color: var(--color-cream);
  padding: .7rem 1.2rem;
  border-radius: 0 0 .5rem .5rem;
  text-decoration: none;
  font-weight: 700;
  transition: top .2s;
}

.skip-link:focus {
  top: 0;
  color: var(--color-white);
}

.site-header {
  position: relative;
  z-index: 1000;
  background: var(--color-cream);
}

.topbar {
  background: var(--color-navy);
  color: rgba(255, 255, 255, .88);
  border-bottom: 2px solid var(--color-gold);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2.5rem;
  padding-top: .35rem;
  padding-bottom: .35rem;
}

.topbar-message {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin: 0;
  font-size: .8rem;
  letter-spacing: .02em;
}

.topbar-dot {
  width: .55rem;
  height: .55rem;
  border-radius: 50%;
  background: var(--color-bright-gold);
  box-shadow: 0 0 0 3px rgba(255, 215, 0, .2);
  flex: 0 0 auto;
}

.topbar-nav {
  display: flex;
  align-items: center;
  gap: .2rem;
}

.topbar-nav a {
  color: rgba(255, 255, 255, .84);
  text-decoration: none;
  font-size: .8rem;
  padding: .2rem .45rem;
  border-radius: .2rem .5rem .2rem .5rem;
  transition: color .2s, background .2s;
}

.topbar-nav a:hover,
.topbar-nav a[aria-current="page"] {
  color: var(--color-bright-gold);
  background: rgba(212, 175, 55, .12);
}

.header-main {
  background: linear-gradient(135deg, var(--color-cream) 0%, #FFFFFF 55%, rgba(212, 175, 55, .14) 130%);
  border-bottom: 1px solid rgba(26, 26, 26, .12);
}

.header-main-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: .9rem;
  padding-bottom: .9rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .8rem;
  text-decoration: none;
  flex: 0 1 auto;
  min-width: 0;
}

.brand-seal {
  position: relative;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 3.1rem;
  height: 3.1rem;
  background: var(--color-ink);
  color: var(--color-gold);
  font-family: var(--font-head);
  font-size: 1.7rem;
  font-weight: 900;
  line-height: 1;
  border: 1px solid rgba(212, 175, 55, .9);
  border-radius: .45rem 1rem .45rem 1rem;
  box-shadow: 4px 4px 0 rgba(212, 175, 55, .4);
}

.brand-seal::after {
  content: "";
  position: absolute;
  inset: .35rem;
  border: 1px solid rgba(212, 175, 55, .5);
  border-radius: .25rem .7rem .25rem .7rem;
  pointer-events: none;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  min-width: 0;
}

.brand-name {
  font-family: var(--font-head);
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: .08em;
  color: var(--color-ink);
  white-space: nowrap;
}

.brand-tag {
  margin-top: .15rem;
  font-size: .68rem;
  letter-spacing: .22em;
  color: var(--color-warm-gray);
  white-space: nowrap;
}

.header-aside {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-contact {
  text-align: right;
  line-height: 1.3;
}

.header-contact-label {
  display: block;
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--color-warm-gray);
}

.header-contact-phone {
  display: block;
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: .05em;
  color: var(--color-navy);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .62rem 1.1rem;
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: .4rem .95rem .4rem .95rem;
  cursor: pointer;
  transition: transform .2s, background .2s, color .2s, border-color .2s;
}

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

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--color-vermilion);
  border-color: var(--color-vermilion);
  color: var(--color-white);
}

.btn-primary:hover {
  background: #C02626;
  border-color: #C02626;
  color: var(--color-white);
}

.btn-gold {
  background: var(--color-gold);
  border-color: #F0D67D;
  color: var(--color-ink);
}

.btn-gold:hover {
  background: var(--color-bright-gold);
  border-color: var(--color-bright-gold);
  color: var(--color-ink);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.btn-outline:hover {
  background: var(--color-ink);
  color: var(--color-cream);
}

.btn-cta {
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 2.9rem;
  height: 2.9rem;
  padding: .6rem;
  border: 2px solid var(--color-ink);
  background: transparent;
  border-radius: .5rem 1rem .5rem 1rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: transform .25s, opacity .25s, background .25s;
}

.nav-toggle:hover span {
  background: var(--color-vermilion);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-ink);
  box-shadow: 0 2px 8px rgba(26, 26, 26, .18);
}

.nav-inner {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 1rem;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: .2rem;
  padding: .25rem 0;
}

.main-nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 3rem;
  padding: .65rem .95rem;
  color: rgba(250, 240, 230, .88);
  font-size: .95rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: .06em;
  border-radius: .25rem .8rem .25rem .8rem;
  position: relative;
  transition: background .2s, color .2s;
}

.main-nav-link::after {
  content: "";
  position: absolute;
  left: .95rem;
  right: .95rem;
  bottom: .45rem;
  height: 2px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .2s;
}

.main-nav-link:hover,
.main-nav-link[aria-current="page"] {
  color: var(--color-bright-gold);
  background: rgba(212, 175, 55, .1);
}

.main-nav-link:hover::after,
.main-nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-ribbon {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: var(--color-gold);
  font-size: .72rem;
  letter-spacing: .16em;
  white-space: nowrap;
}

.nav-ribbon-label {
  display: inline-block;
}

.nav-ribbon-line {
  width: 2.4rem;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold));
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: rgba(26, 26, 26, .1);
  pointer-events: none;
  z-index: 5000;
}

.scroll-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--color-vermilion) 0%, var(--color-gold) 70%, var(--color-bright-gold) 100%);
}

.site-footer {
  position: relative;
  background: var(--color-ink);
  color: rgba(250, 240, 230, .85);
  border-top: 4px solid var(--color-gold);
  margin-top: 3rem;
}

.site-footer::before {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-vermilion) 35%, var(--color-gold) 70%, transparent);
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, .8fr) minmax(0, 1.2fr);
  gap: 2.5rem;
  padding: 3rem 0 2.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.brand-footer {
  text-decoration: none;
  margin-bottom: 1rem;
}

.brand-footer .brand-name {
  color: var(--color-cream);
}

.brand-footer .brand-tag {
  color: rgba(212, 175, 55, .8);
}

.footer-about {
  margin-top: .6rem;
  max-width: 56ch;
  color: rgba(250, 240, 230, .78);
}

.footer-trust {
  margin-top: 1rem;
  border-left: 4px solid var(--color-gold);
  background: rgba(212, 175, 55, .08);
  padding: .8rem 1rem;
  border-radius: 0 .7rem .7rem 0;
  font-size: .88rem;
  color: rgba(250, 240, 230, .88);
}

.footer-channels {
  display: flex;
  flex-direction: column;
}

.footer-title {
  position: relative;
  color: var(--color-gold);
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: .12em;
  padding-bottom: .55rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid rgba(212, 175, 55, .3);
}

.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 3.6rem;
  height: 2px;
  background: var(--color-vermilion);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: .25rem;
}

.footer-nav a {
  color: rgba(250, 240, 230, .84);
  text-decoration: none;
  padding: .3rem 0;
  border-bottom: 1px solid rgba(250, 240, 230, .1);
  transition: color .2s, padding-left .2s, border-color .2s;
}

.footer-nav a:hover {
  color: var(--color-bright-gold);
  border-color: var(--color-gold);
  padding-left: .35rem;
}

.footer-contact {
  display: flex;
  flex-direction: column;
}

.footer-contact-line {
  margin: 0 0 1rem;
  line-height: 1.9;
  color: rgba(250, 240, 230, .82);
}

.footer-contact-note {
  font-size: .8rem;
  color: rgba(250, 240, 230, .65);
  background: rgba(255, 255, 255, .04);
  padding: .6rem .8rem;
  border-radius: .3rem .8rem .3rem .8rem;
}

.footer-mini-nav {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1rem;
}

.footer-mini-nav a {
  display: inline-flex;
  padding: .25rem .6rem;
  color: rgba(250, 240, 230, .88);
  text-decoration: none;
  border: 1px solid rgba(212, 175, 55, .5);
  border-radius: 999px .3rem 999px .3rem;
  font-size: .75rem;
  transition: background .2s, color .2s, border-color .2s;
}

.footer-mini-nav a:hover {
  background: var(--color-gold);
  color: var(--color-ink);
  border-color: var(--color-gold);
}

.footer-bottom {
  border-top: 1px solid rgba(250, 240, 230, .12);
  padding-top: 1.2rem;
  padding-bottom: 1.2rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: .8rem;
  color: rgba(250, 240, 230, .65);
}

.footer-bottom a {
  color: rgba(250, 240, 230, .8);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--color-bright-gold);
}

.back-to-top {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  z-index: 1200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .15rem;
  min-width: 3.4rem;
  padding: .55rem .65rem;
  background: var(--color-vermilion);
  color: var(--color-white);
  border: 2px solid var(--color-gold);
  border-radius: 50% 50% .5rem .5rem;
  font-size: .68rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(.8rem);
  transition: opacity .25s, transform .25s, visibility .25s, background .2s, color .2s;
}

.back-to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-gold);
  color: var(--color-ink);
}

.back-to-top-arrow {
  font-size: 1.25rem;
  line-height: 1;
}

.back-to-top-text {
  letter-spacing: .08em;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  list-style: none;
  padding: 1rem 0;
  margin: 0;
  font-size: .85rem;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin: 0 .35rem;
  color: var(--color-gold);
}

.breadcrumb a {
  color: var(--color-navy);
  text-decoration: none;
}

.breadcrumb [aria-current="page"] {
  color: var(--color-vermilion);
  font-weight: 700;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: .8rem 1.5rem;
  position: relative;
  margin-bottom: 1.8rem;
  padding-bottom: .8rem;
  border-bottom: 2px solid var(--color-ink);
}

.section-head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 4rem;
  height: 2px;
  background: var(--color-vermilion);
}

.section-kicker {
  margin: 0 0 .15rem;
  font-size: .72rem;
  letter-spacing: .32em;
  font-weight: 700;
  color: var(--color-vermilion);
  text-transform: uppercase;
}

.section-title {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--color-ink);
}

.section-title--gold {
  color: var(--color-gold);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

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

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

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

.card {
  position: relative;
  background: var(--color-white);
  border: 1px solid rgba(26, 26, 26, .14);
  border-radius: var(--radius-cut);
  padding: 1.4rem;
  box-shadow: var(--shadow-book);
  transition: transform .2s, box-shadow .2s;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 1.2rem;
  width: 3rem;
  height: .3rem;
  background: var(--color-vermilion);
  border-radius: 0 0 .3rem .3rem;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hard);
}

.card-title {
  font-family: var(--font-head);
  font-size: 1.25rem;
  margin: 0 0 .6rem;
}

.card-meta {
  color: var(--color-warm-gray);
  font-size: .8rem;
}

.card--gold::before {
  background: var(--color-gold);
}

.card--ink {
  background: var(--color-ink);
  color: var(--color-cream);
}

.card--ink .card-title {
  color: var(--color-cream);
}

.panel-cut {
  position: relative;
  padding: 2rem;
  background: var(--color-ink);
  color: var(--color-cream);
  border-radius: var(--radius-cut);
}

.panel-cut::after {
  content: "";
  position: absolute;
  inset: .65rem;
  border: 1px solid rgba(212, 175, 55, .55);
  border-radius: .3rem .95rem .3rem .95rem;
  pointer-events: none;
}

.panel-cut h1,
.panel-cut h2,
.panel-cut h3,
.panel-cut h4 {
  color: var(--color-cream);
}

.panel-cut--navy {
  background: var(--color-navy);
}

.panel-cut--cream {
  background: rgba(212, 175, 55, .1);
  border: 1px solid rgba(212, 175, 55, .4);
  color: var(--color-ink);
}

.panel-cut--cream::after {
  border-color: rgba(212, 175, 55, .5);
}

.line-slash {
  display: block;
  height: 4px;
  margin: 1.2rem 0;
  position: relative;
}

.line-slash::after {
  content: "";
  display: block;
  height: 100%;
  width: 70%;
  background: linear-gradient(90deg, var(--color-vermilion), var(--color-gold), transparent);
  transform: skewX(-24deg);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .18rem .65rem;
  border: 1px solid rgba(212, 175, 55, .8);
  background: rgba(212, 175, 55, .1);
  color: var(--color-navy);
  border-radius: 999px .25rem 999px .25rem;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .06em;
  white-space: nowrap;
}

.tag--vermilion {
  border-color: var(--color-vermilion);
  background: rgba(210, 58, 58, .08);
  color: var(--color-vermilion);
}

.tag--navy {
  border-color: var(--color-navy);
  background: var(--color-navy);
  color: var(--color-cream);
}

.image-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, var(--color-navy), #111C30);
  border-radius: var(--radius-cut);
  aspect-ratio: 16 / 10;
  box-shadow: var(--shadow-book);
}

.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

.image-frame::before {
  content: "";
  position: absolute;
  inset: 1rem;
  border: 1px solid rgba(212, 175, 55, .6);
  border-radius: .3rem .9rem .3rem .9rem;
  z-index: 2;
  pointer-events: none;
}

.image-frame::after {
  content: "乐";
  position: absolute;
  right: .8rem;
  bottom: .3rem;
  z-index: 3;
  color: rgba(212, 175, 55, .25);
  font-family: var(--font-head);
  font-size: 2.5rem;
  font-weight: 900;
  pointer-events: none;
}

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

.image-frame--wide {
  aspect-ratio: 21 / 9;
}

@media (max-width: 1000px) {
  .header-contact {
    display: none;
  }
}

@media (max-width: 880px) {
  .nav-toggle {
    display: inline-flex;
  }

  .btn-cta {
    display: none;
  }

  .nav-wrap {
    position: relative;
    overflow: hidden;
    box-shadow: none;
  }

  .nav-inner {
    display: block;
    padding-top: 0;
    padding-bottom: 0;
  }

  .main-nav {
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    transition: max-height .35s ease, padding .35s ease;
  }

  .main-nav[data-open] {
    max-height: 38rem;
    padding: .75rem 0 1rem;
  }

  .main-nav-link {
    min-height: 2.9rem;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    border-radius: 0;
    padding-left: .25rem;
  }

  .main-nav-link::after {
    left: .25rem;
    right: auto;
    width: 1.8rem;
  }

  .nav-ribbon {
    display: none;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 700px) {
  .footer-main {
    grid-template-columns: 1fr;
    padding-top: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: .4rem;
  }
}

@media (max-width: 640px) {
  .topbar-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: .4rem;
  }

  .topbar-message {
    font-size: .72rem;
  }

  .brand {
    gap: .6rem;
  }

  .brand-name {
    font-size: 1.25rem;
  }

  .brand-seal {
    width: 2.7rem;
    height: 2.7rem;
    font-size: 1.45rem;
  }

  .header-main-inner {
    padding-top: .7rem;
    padding-bottom: .7rem;
  }

  .header-aside {
    gap: .7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}