:root {
  --gold: #d4a32f;
  --copper: #8b5e34;
  --steel: #6d737a;
  --paper: #f6f2e8;
  --ink: #282e34;
  --line: #c9b99e;
  --shadow: 0 18px 34px rgba(40, 46, 52, 0.16);
  --ui-nav-height: clamp(76px, 9vw, 112px);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  background-color: var(--paper);
  overflow-x: hidden;
}

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

.corner-decor {
  display: none;
}

.corner-tl {
  top: 0;
  left: 0;
}

.corner-tr {
  top: 0;
  right: 0;
}

.corner-bl {
  bottom: 0;
  left: 0;
}

.corner-br {
  right: 0;
  bottom: 0;
}

.site-header {
  position: relative;
  z-index: 20;
  padding: 14px 22px;
  background: rgba(246, 242, 232, 0.58);
  backdrop-filter: blur(14px);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(1180px, 100%);
  aspect-ratio: 4688 / 444;
  margin: 0 auto;
  padding: 12px clamp(40px, 8vw, 94px);
  background-image: url("assets/ui/navbar.png");
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
}

.brand {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  width: clamp(142px, 16vw, 184px);
  min-width: 128px;
  margin-left: clamp(28px, 4.2vw, 58px);
  padding: 4px 8px;
  transition: transform 180ms ease, filter 180ms ease;
}

.brand:hover {
  filter: drop-shadow(0 10px 18px rgba(40, 46, 52, 0.18));
  transform: translateY(-2px);
}

.brand img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.main-nav {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0;
  flex-wrap: nowrap;
  margin-right: clamp(34px, 4.4vw, 58px);
}

.nav-item,
.sub-item {
  position: relative;
}

.nav-link,
.sub-link,
.third-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 96px;
  min-height: 40px;
  padding: 10px 20px;
  border: 2px solid rgba(63, 51, 40, 0.9);
  border-radius: 8px;
  color: #fffaf0;
  background: #6b4525;
  box-shadow:
    inset 0 0 0 1px rgba(212, 163, 47, 0.34),
    0 2px 6px rgba(40, 46, 52, 0.06);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 160ms ease, color 160ms ease, filter 160ms ease, background 160ms ease, border-color 160ms ease;
}

.nav-link:hover,
.sub-link:hover,
.third-link:hover {
  color: #fffaf0;
  border-color: rgba(212, 163, 47, 0.94);
  background: #7c522e;
  filter: drop-shadow(0 4px 8px rgba(40, 46, 52, 0.1));
  transform: translateY(-1px);
}

.nav-link.active {
  color: #2f2822;
  border-color: rgba(139, 94, 52, 0.92);
  background: #d4a32f;
  filter: drop-shadow(0 4px 8px rgba(40, 46, 52, 0.08));
}

.nav-link:active,
.sub-link:active,
.third-link:active {
  color: #2f2822;
  background: #c28a2d;
}

.nav-link:active,
.sub-link:active,
.third-link:active,
.btn:active,
.content-card:active {
  transform: translateY(1px) scale(0.99);
}

.submenu,
.thirdmenu {
  position: absolute;
  min-width: 154px;
  padding: 8px;
  border: 2px solid #3f3328;
  border-radius: 6px;
  background: rgba(246, 242, 232, 0.96);
  box-shadow: 0 14px 28px rgba(40, 46, 52, 0.18), inset 0 0 0 1px rgba(212, 163, 47, 0.32);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 160ms ease, transform 160ms ease;
}

.submenu {
  top: 100%;
  left: 0;
}

.thirdmenu {
  top: -8px;
  left: calc(100% + 8px);
}

.nav-item:nth-last-child(-n + 4) > .submenu {
  right: 0;
  left: auto;
}

.nav-item:nth-last-child(-n + 4) .thirdmenu {
  right: calc(100% + 8px);
  left: auto;
}

.nav-item:hover > .submenu,
.sub-item:hover > .thirdmenu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.sub-link::after {
  content: ">";
  margin-left: 12px;
  color: var(--copper);
}

.side-nav {
  position: fixed;
  top: 50%;
  right: clamp(12px, 2vw, 28px);
  z-index: 25;
  display: flex;
  flex-direction: column;
  gap: 7px;
  width: 138px;
  padding: 15px 11px;
  border: 2px solid var(--gold);
  border-radius: 14px;
  background: rgba(91, 59, 34, 0.92);
  box-shadow: 0 18px 34px rgba(40, 46, 52, 0.2), inset 0 0 0 1px rgba(246, 242, 232, 0.18);
  transform: translateY(-50%);
}

.side-nav-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 14px;
  border: 2px solid rgba(63, 51, 40, 0.9);
  border-radius: 8px;
  color: #fffaf0;
  background: #6b4525;
  box-shadow: inset 0 0 0 1px rgba(212, 163, 47, 0.32);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  transition: transform 160ms ease, color 160ms ease, filter 160ms ease, background 160ms ease, border-color 160ms ease;
}

.side-nav-link:hover {
  color: #fffaf0;
  border-color: rgba(212, 163, 47, 0.94);
  background: #7c522e;
  filter: drop-shadow(0 4px 8px rgba(40, 46, 52, 0.1));
  transform: translateX(-2px);
}

.side-nav-link.active,
.side-nav-link:active {
  color: #2f2822;
  border-color: rgba(139, 94, 52, 0.92);
  background: #d4a32f;
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(320px, 1.18fr);
  gap: 32px;
  align-items: center;
  min-height: calc(100vh - 104px);
  padding: 52px 0 20px;
}

.hero-copy h1,
.sub-hero h1 {
  margin: 10px 0 16px;
  font-size: clamp(2.3rem, 6vw, 5.2rem);
  line-height: 1.05;
}

.hero-copy p,
.sub-hero p {
  max-width: 560px;
  color: #545b62;
  font-size: 1.04rem;
  line-height: 1.8;
}

.eyebrow {
  margin: 0;
  color: var(--copper);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 148px;
  min-height: 48px;
  padding: 13px 28px;
  border: 2px solid rgba(63, 51, 40, 0.9);
  border-radius: 8px;
  font-weight: 800;
  box-shadow:
    inset 0 0 0 1px rgba(255, 250, 240, 0.18),
    0 3px 9px rgba(40, 46, 52, 0.08);
  transition: transform 160ms ease, filter 160ms ease, background 160ms ease, border-color 160ms ease;
}

.btn.primary {
  color: #fffaf0;
  background: #b98326;
}

.btn.secondary {
  color: #fffaf0;
  background: #6b4525;
}

.btn:hover {
  border-color: rgba(212, 163, 47, 0.96);
  filter: drop-shadow(0 5px 10px rgba(40, 46, 52, 0.1));
  transform: translateY(-2px);
}

.btn.primary:hover {
  background: #c8942e;
}

.btn.secondary:hover {
  background: #7c522e;
}

.banner-shell,
.video-frame {
  position: relative;
  overflow: hidden;
  padding: 0;
  filter: drop-shadow(0 18px 34px rgba(40, 46, 52, 0.16));
}

.banner-shell::after,
.video-frame::after {
  position: absolute;
  inset: 0;
  z-index: 3;
  content: "";
  background-image: url("assets/ui/card_horizontal_thick.png");
  background-position: center;
  background-repeat: no-repeat;
  background-size: 100% 100%;
  pointer-events: none;
}

.banner-shell {
  aspect-ratio: 1354 / 626;
}

.banner-track {
  position: relative;
  z-index: 1;
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 420ms ease;
}

.banner-slide {
  position: relative;
  flex: 0 0 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(6px, 0.8vw, 10px);
}

.banner-media {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 8px;
}

.banner-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 400ms ease;
}

.banner-slide:hover .banner-media img {
  transform: scale(1.035);
}

.banner-caption {
  position: absolute;
  bottom: 18px;
  left: 22px;
  max-width: 72%;
  padding: 12px 16px;
  color: #fffaf0;
  background: rgba(40, 46, 52, 0.72);
  border-left: 5px solid var(--gold);
}

.banner-caption strong {
  display: block;
  margin-bottom: 4px;
  font-size: 1.1rem;
}

.banner-caption span {
  color: #eee4d3;
  font-size: 0.9rem;
}

.banner-controls {
  position: absolute;
  z-index: 4;
  right: clamp(34px, 5vw, 64px);
  bottom: clamp(34px, 5vw, 64px);
  display: flex;
  gap: 8px;
}

.banner-arrow {
  position: absolute;
  top: 50%;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  width: clamp(34px, 4vw, 46px);
  height: clamp(42px, 5vw, 58px);
  border: 0;
  background: transparent;
  cursor: pointer;
  transform: translateY(-50%);
  transition: transform 160ms ease, filter 160ms ease;
}

.banner-arrow::before {
  width: 12px;
  height: 12px;
  content: "";
  border-top: 4px solid #1e2328;
  border-right: 4px solid #1e2328;
}

.banner-arrow-prev {
  left: clamp(18px, 2.6vw, 34px);
}

.banner-arrow-prev::before {
  transform: rotate(-135deg) translate(-1px, -1px);
}

.banner-arrow-next {
  right: clamp(18px, 2.6vw, 34px);
}

.banner-arrow-next::before {
  transform: rotate(45deg) translate(-1px, 1px);
}

.banner-arrow:hover {
  filter: drop-shadow(0 10px 14px rgba(40, 46, 52, 0.18));
  transform: translateY(-50%) scale(1.05);
}

.banner-arrow:active {
  transform: translateY(-50%) scale(0.96);
}

.banner-dot {
  width: 12px;
  height: 12px;
  border: 1px solid rgba(40, 46, 52, 0.34);
  border-radius: 50%;
  background: rgba(40, 46, 52, 0.42);
  cursor: pointer;
}

.banner-dot.active {
  background: var(--gold);
}

.page-divider,
.section-divider {
  width: min(920px, calc(100% - 56px));
  border-radius: 999px;
  background: rgba(139, 94, 52, 0.46);
}

.page-divider {
  height: 2px;
  margin: 42px auto 28px;
  border: 0;
}

.section-divider {
  height: 1px;
  width: min(760px, calc(100% - 36px));
  margin: 28px auto 34px;
  border: 0;
  background: rgba(139, 94, 52, 0.28);
}

.section-intro {
  padding: 0;
}

.framed-section,
.about-band {
  position: relative;
  isolation: isolate;
  margin: 34px 0 70px;
  padding: 46px clamp(24px, 5vw, 66px) 54px;
  border: 3px solid rgba(139, 94, 52, 0.82);
  border-radius: 18px;
  background: rgba(246, 242, 232, 0.9);
  box-shadow:
    inset 0 0 0 2px rgba(212, 163, 47, 0.28),
    inset 0 0 0 8px rgba(255, 250, 240, 0.38),
    var(--shadow);
}

.framed-section::before,
.framed-section::after,
.about-band::before,
.about-band::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.framed-section::before,
.about-band::before {
  inset: 10px;
  z-index: 0;
  border: 1px solid rgba(139, 94, 52, 0.28);
  border-radius: 12px;
}

.framed-section::after,
.about-band::after {
  left: 50%;
  top: -9px;
  z-index: 1;
  width: clamp(86px, 12vw, 142px);
  height: 18px;
  border: 2px solid rgba(139, 94, 52, 0.78);
  border-radius: 999px;
  background: #d4a32f;
  box-shadow: inset 0 0 0 1px rgba(255, 250, 240, 0.28);
  transform: translateX(-50%);
}

.section-frame-body {
  display: none;
}

.section-frame-body::before {
  content: "";
}

.section-content,
.about-content {
  position: relative;
  z-index: 2;
}

.section-intro h2,
.about-band h2 {
  margin: 8px 0 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.content-card {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  min-height: 410px;
  overflow: hidden;
  padding: 42px 34px 46px;
  filter: drop-shadow(0 8px 18px rgba(40, 46, 52, 0.08));
  transition: transform 180ms ease, filter 180ms ease;
}

.content-card::after {
  position: absolute;
  inset: 0;
  z-index: 4;
  content: "";
  background-image: url("assets/ui/card_vertical_thick.png");
  background-position: center;
  background-repeat: no-repeat;
  background-size: 100% 100%;
  pointer-events: none;
}

.content-card:hover {
  filter: drop-shadow(0 18px 34px rgba(40, 46, 52, 0.16));
  transform: translateY(-6px);
}

.card-art {
  position: relative;
  z-index: 1;
  height: 158px;
  margin: -34px -30px 0;
  background: var(--card-color);
  overflow: hidden;
  border-radius: 7px 7px 4px 4px;
}

.card-art::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 46%;
  content: "";
  background: linear-gradient(to bottom, rgba(246, 242, 232, 0), rgba(246, 242, 232, 0.94));
  pointer-events: none;
}

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

.card-body {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 14px;
  padding: 18px 8px;
}

.card-icon {
  width: 58px;
  height: 58px;
  border-radius: 8px;
  object-fit: contain;
  background: rgba(246, 242, 232, 0.9);
  border: 1px solid rgba(139, 94, 52, 0.26);
}

.card-body h3 {
  margin: 0;
  font-size: 1.25rem;
}

.card-body h4 {
  margin: 5px 0 10px;
  color: var(--copper);
  font-size: 0.92rem;
}

.card-body p {
  grid-column: 1 / -1;
  margin: 0;
  color: #545b62;
  line-height: 1.75;
}

.card-meta {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin: auto 10px 0;
  padding: 14px 4px 0;
  border-top: 1px solid rgba(139, 94, 52, 0.16);
  color: #60666c;
  font-size: 0.88rem;
}

.about-band {
  min-height: 250px;
  margin-bottom: 42px;
}

.about-content {
  display: flex;
  align-items: center;
  gap: 28px;
}

.about-details {
  flex: 1;
  min-width: min(100%, 420px);
}

.about-band.compact {
  margin-top: 58px;
}

.about-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(360px, 46vw);
  padding: 16px;
  transition: transform 160ms ease, filter 160ms ease;
}

.about-logo:hover {
  filter: drop-shadow(0 16px 24px rgba(40, 46, 52, 0.18));
  transform: translateY(-3px);
}

.about-logo img {
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.about-desc {
  max-width: 620px;
  margin: 12px 0 22px;
  color: #545b62;
  font-size: 1rem;
  line-height: 1.8;
}

.about-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 12px;
}

.about-link {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 58px;
  padding: 10px 14px;
  border: 2px solid rgba(63, 51, 40, 0.86);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(246, 242, 232, 0.88);
  box-shadow: inset 0 0 0 1px rgba(212, 163, 47, 0.28), 0 8px 16px rgba(40, 46, 52, 0.08);
  font: inherit;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
  transition: transform 160ms ease, filter 160ms ease, background 160ms ease;
}

.about-link:hover {
  background: rgba(255, 250, 240, 0.96);
  filter: drop-shadow(0 10px 14px rgba(40, 46, 52, 0.14));
  transform: translateY(-2px);
}

.about-link:active {
  transform: translateY(1px) scale(0.99);
}

.about-link.placeholder {
  opacity: 0.72;
}

.about-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: #fffaf0;
  overflow: hidden;
}

.about-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.image-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 30px;
  background: rgba(40, 46, 52, 0.72);
}

.image-modal.open {
  display: flex;
}

.image-modal img {
  display: block;
  max-width: min(92vw, 760px);
  max-height: 86vh;
  border: 3px solid var(--gold);
  border-radius: 10px;
  background: #fffaf0;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.34);
}

.image-modal-close {
  position: fixed;
  top: 24px;
  right: 28px;
  width: 44px;
  height: 44px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  color: #fffaf0;
  background: rgba(91, 59, 34, 0.96);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
}

.site-footer {
  display: flex;
  justify-content: center;
  gap: 24px;
  padding: 24px;
  color: #64696e;
  border-top: 1px solid rgba(139, 94, 52, 0.16);
}

.site-footer a {
  color: var(--copper);
  font-weight: 800;
}

.sub-hero {
  min-height: 42vh;
  padding: 90px 0 36px;
}

.video-section {
  padding: 18px 0 42px;
}

.video-frame {
  aspect-ratio: 1354 / 626;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-frame iframe {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

@media (max-width: 1040px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    aspect-ratio: auto;
    min-height: var(--ui-nav-height);
    padding: 16px calc(var(--ui-nav-height) * 0.72);
    background-size: auto 100%;
  }

  .main-nav {
    justify-content: flex-start;
    flex-wrap: wrap;
    margin-right: 0;
  }

  .side-nav {
    display: none;
  }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 34px;
  }

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

@media (max-width: 640px) {
  :root {
    --ui-nav-height: 70px;
  }

  .site-header {
    padding: 10px;
  }

  main {
    width: min(100% - 22px, 1180px);
  }

  .header-inner {
    padding: 14px 28px;
  }

  .brand {
    width: 155px;
    margin-left: 0;
  }

  .nav-link,
  .sub-link,
  .third-link {
    min-width: 74px;
    min-height: 32px;
    padding: 8px 12px;
    font-size: 0.84rem;
  }

  .submenu,
  .thirdmenu {
    min-width: 132px;
  }

  .thirdmenu {
    top: 100%;
    right: auto;
    left: 24px;
  }

  .banner-shell,
  .video-frame {
    padding: 22px 20px;
  }

  .banner-caption {
    bottom: 12px;
    left: 12px;
    max-width: calc(100% - 24px);
    padding: 8px 10px;
  }

  .banner-controls {
    top: 24px;
    right: 24px;
    bottom: auto;
  }

  .framed-section,
  .about-band {
    margin: 28px 0 48px;
    padding: 34px 18px 38px;
    border-radius: 14px;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .content-card {
    padding: 38px 30px 44px;
  }

  .about-content {
    align-items: flex-start;
    flex-direction: column;
  }

  .about-links {
    grid-template-columns: 1fr;
    width: 100%;
  }

  .about-logo {
    width: 100%;
  }

  .corner-decor {
    width: 92px;
  }

  .site-footer {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
}