:root {
  --ink: #f6efe4;
  --ivory: #080706;
  --paper: #15110f;
  --muted: #b7aa98;
  --line: rgba(184, 146, 92, 0.24);
  --burgundy: #8e2433;
  --bronze: #b8925c;
  --charcoal: #0f0d0b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 0%, rgba(142, 36, 51, 0.16), transparent 34%),
    linear-gradient(180deg, #0d0b0a 0%, var(--ivory) 42%, #050504 100%);
  font-family: "Noto Serif SC", "Songti SC", "Microsoft YaHei", serif;
  line-height: 1.7;
}

body.motion-lock {
  overflow: auto;
}

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

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

.opening-curtain {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  pointer-events: none;
  background: transparent;
}

.opening-curtain span {
  background:
    linear-gradient(180deg, rgba(184, 146, 92, 0.18), transparent 36%),
    rgba(5, 5, 4, 0.68);
  border-right: 1px solid rgba(184, 146, 92, 0.18);
  transform-origin: top;
}

.opening-mark {
  position: fixed;
  left: clamp(18px, 5vw, 72px);
  bottom: clamp(24px, 6vw, 76px);
  z-index: 1000;
  color: var(--bronze);
  font-family: Georgia, serif;
  font-size: clamp(44px, 10vw, 150px);
  line-height: 0.86;
  letter-spacing: 0.08em;
  pointer-events: none;
  mix-blend-mode: screen;
}

.motion-char {
  display: inline-block;
  transform-origin: 50% 70%;
  will-change: transform, opacity;
}

.motion-reveal {
  position: relative;
  overflow: hidden;
}

.motion-reveal::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(90deg, rgba(184, 146, 92, 0.2), rgba(5, 5, 4, 0.96) 34%, rgba(5, 5, 4, 1));
  transform-origin: right;
  pointer-events: none;
}

.motion-ready .section,
.motion-ready .hk-center,
.motion-ready .teacher-section,
.motion-ready .chroma-section,
.motion-ready .dark-band {
  position: relative;
  will-change: transform, opacity;
}

.motion-big-title {
  position: absolute;
  top: clamp(28px, 5vw, 62px);
  left: max(18px, calc((100vw - 1180px) / 2));
  z-index: 0;
  max-width: calc(100% - 36px);
  color: rgba(184, 146, 92, 0.075);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(54px, 12vw, 164px);
  font-weight: 700;
  line-height: 0.82;
  letter-spacing: 0;
  text-transform: uppercase;
  white-space: nowrap;
  pointer-events: none;
  transform-origin: left center;
  will-change: transform, opacity;
}

.motion-ready .section > :not(.motion-big-title),
.motion-ready .hk-center > :not(.motion-big-title),
.motion-ready .teacher-section > :not(.motion-big-title),
.motion-ready .chroma-section > :not(.motion-big-title),
.motion-ready .dark-band > :not(.motion-big-title) {
  position: relative;
  z-index: 1;
}

.motion-ready .image-card,
.motion-ready .lot-mini,
.motion-ready .teacher-card,
.motion-ready .chroma-card,
.motion-ready .service-grid article,
.motion-ready .process-line article,
.motion-ready .wide-card,
.motion-ready .lot-card,
.motion-ready .stats article {
  will-change: transform, opacity;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(18px, 5vw, 72px);
  background: rgba(8, 7, 6, 0.92);
  border-bottom: 1px solid rgba(184, 146, 92, 0.24);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: var(--ink);
  background: #050504;
  border: 1px solid var(--bronze);
  font-family: Georgia, serif;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.nav a {
  padding: 8px 12px;
  color: rgba(246, 239, 228, 0.76);
  font-size: 15px;
}

.nav a.active,
.nav a:hover {
  color: var(--bronze);
}

.hero {
  position: relative;
  min-height: 680px;
  display: grid;
  align-items: center;
  overflow: hidden;
}

.hero > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  will-change: transform, filter;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(12, 10, 9, 0.7), rgba(12, 10, 9, 0.2) 48%, rgba(12, 10, 9, 0.52)),
    linear-gradient(0deg, rgba(12, 10, 9, 0.35), transparent 42%);
}

.hero-content {
  position: relative;
  width: min(700px, calc(100% - 36px));
  margin-left: clamp(18px, 7vw, 96px);
  color: var(--ink);
}

.hero h1,
.page-hero h1 {
  margin: 8px 0 18px;
  font-size: clamp(46px, 8vw, 96px);
  line-height: 1;
  letter-spacing: 0;
}

.hero p {
  max-width: 620px;
  font-size: clamp(17px, 2vw, 22px);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--bronze);
  font-family: Georgia, serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-actions,
.section-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 18px;
  border: 1px solid var(--bronze);
  font-weight: 700;
}

.button.primary {
  color: var(--ink);
  background: var(--burgundy);
  border-color: var(--burgundy);
}

.button.ghost {
  color: var(--ink);
  background: rgba(255, 250, 241, 0.08);
}

.section {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(56px, 8vw, 96px) 0;
}

.intro-grid,
.president,
.hk-center,
.services-preview,
.about-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

h2,
h3,
p {
  margin-top: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.15;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 21px;
  line-height: 1.3;
}

.lead {
  color: var(--muted);
  font-size: clamp(18px, 2.2vw, 24px);
}

.hk-center {
  width: 100%;
  max-width: none;
  padding-inline: max(18px, calc((100vw - 1180px) / 2));
  background:
    linear-gradient(135deg, rgba(184, 146, 92, 0.12), rgba(8, 7, 6, 0.58)),
    #100d0b;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hk-copy {
  align-self: center;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.feature-list span {
  padding: 12px 14px;
  background: rgba(246, 239, 228, 0.06);
  border-left: 3px solid var(--bronze);
  color: var(--ink);
  font-weight: 700;
}

.hk-gallery {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  grid-template-rows: repeat(4, 130px);
  gap: 12px;
}

.hk-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 1px solid rgba(165, 121, 69, 0.34);
  will-change: transform;
}

.hk-gallery .hk-main {
  grid-row: 1 / span 4;
}

.president {
  grid-template-columns: minmax(320px, 420px) minmax(460px, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.border-glow-card {
  --edge-proximity: 0;
  --cursor-angle: 45deg;
  --edge-sensitivity: 30;
  --color-sensitivity: calc(var(--edge-sensitivity) + 20);
  --border-radius: 8px;
  --glow-padding: 34px;
  --cone-spread: 25;
  --card-bg: #0b0908;
  --fill-opacity: 0.34;
  --glow-color: hsl(38deg 70% 64% / 100%);
  --glow-color-60: hsl(38deg 70% 64% / 60%);
  --glow-color-50: hsl(38deg 70% 64% / 50%);
  --glow-color-40: hsl(38deg 70% 64% / 40%);
  --glow-color-30: hsl(38deg 70% 64% / 30%);
  --glow-color-20: hsl(38deg 70% 64% / 20%);
  --glow-color-10: hsl(38deg 70% 64% / 10%);
  --gradient-one: radial-gradient(at 80% 55%, #b8925c 0, transparent 50%);
  --gradient-two: radial-gradient(at 69% 34%, #8e2433 0, transparent 50%);
  --gradient-three: radial-gradient(at 8% 6%, #e2c187 0, transparent 50%);
  --gradient-four: radial-gradient(at 41% 38%, #6d1724 0, transparent 50%);
  --gradient-five: radial-gradient(at 86% 85%, #c7a16a 0, transparent 50%);
  --gradient-six: radial-gradient(at 82% 18%, #f0d49b 0, transparent 50%);
  --gradient-seven: radial-gradient(at 51% 4%, #7c5f3a 0, transparent 50%);
  --gradient-base: linear-gradient(#b8925c 0 100%);

  position: relative;
  border-radius: var(--border-radius);
  isolation: isolate;
  transform: translate3d(0, 0, 0.01px);
  overflow: visible;
  background: var(--card-bg);
}

.border-glow-card::before,
.border-glow-card::after,
.border-glow-card > .edge-light {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  transition: opacity 0.25s ease-out;
  z-index: -1;
}

.border-glow-card:not(:hover)::before,
.border-glow-card:not(:hover)::after,
.border-glow-card:not(:hover) > .edge-light {
  opacity: 0;
  transition: opacity 0.75s ease-in-out;
}

.border-glow-card::before {
  border: 1px solid transparent;
  background:
    linear-gradient(var(--card-bg) 0 100%) padding-box,
    linear-gradient(rgb(255 255 255 / 0%) 0 100%) border-box,
    var(--gradient-one) border-box,
    var(--gradient-two) border-box,
    var(--gradient-three) border-box,
    var(--gradient-four) border-box,
    var(--gradient-five) border-box,
    var(--gradient-six) border-box,
    var(--gradient-seven) border-box,
    var(--gradient-base) border-box;
  opacity: calc((var(--edge-proximity) - var(--color-sensitivity)) / (100 - var(--color-sensitivity)));
  mask-image: conic-gradient(from var(--cursor-angle) at center, black calc(var(--cone-spread) * 1%), transparent calc((var(--cone-spread) + 15) * 1%), transparent calc((100 - var(--cone-spread) - 15) * 1%), black calc((100 - var(--cone-spread)) * 1%));
  -webkit-mask-image: conic-gradient(from var(--cursor-angle) at center, black calc(var(--cone-spread) * 1%), transparent calc((var(--cone-spread) + 15) * 1%), transparent calc((100 - var(--cone-spread) - 15) * 1%), black calc((100 - var(--cone-spread)) * 1%));
}

.border-glow-card::after {
  border: 1px solid transparent;
  background:
    var(--gradient-one) padding-box,
    var(--gradient-two) padding-box,
    var(--gradient-three) padding-box,
    var(--gradient-four) padding-box,
    var(--gradient-five) padding-box,
    var(--gradient-six) padding-box,
    var(--gradient-seven) padding-box,
    var(--gradient-base) padding-box;
  opacity: calc(var(--fill-opacity) * (var(--edge-proximity) - var(--color-sensitivity)) / (100 - var(--color-sensitivity)));
  mix-blend-mode: soft-light;
  mask-image:
    linear-gradient(to bottom, black, black),
    radial-gradient(ellipse at 50% 50%, black 40%, transparent 65%),
    conic-gradient(from var(--cursor-angle) at center, transparent 5%, black 15%, black 85%, transparent 95%);
  -webkit-mask-image:
    linear-gradient(to bottom, black, black),
    radial-gradient(ellipse at 50% 50%, black 40%, transparent 65%),
    conic-gradient(from var(--cursor-angle) at center, transparent 5%, black 15%, black 85%, transparent 95%);
}

.border-glow-card > .edge-light {
  inset: calc(var(--glow-padding) * -1);
  pointer-events: none;
  z-index: 1;
  opacity: calc((var(--edge-proximity) - var(--edge-sensitivity)) / (100 - var(--edge-sensitivity)));
  mix-blend-mode: plus-lighter;
  mask-image: conic-gradient(from var(--cursor-angle) at center, black 2.5%, transparent 10%, transparent 90%, black 97.5%);
  -webkit-mask-image: conic-gradient(from var(--cursor-angle) at center, black 2.5%, transparent 10%, transparent 90%, black 97.5%);
}

.border-glow-card > .edge-light::before {
  content: "";
  position: absolute;
  inset: var(--glow-padding);
  border-radius: inherit;
  box-shadow:
    inset 0 0 0 1px var(--glow-color),
    inset 0 0 3px 0 var(--glow-color-50),
    inset 0 0 15px 0 var(--glow-color-30),
    inset 0 0 38px 2px var(--glow-color-10),
    0 0 3px 0 var(--glow-color-50),
    0 0 16px 0 var(--glow-color-30),
    0 0 34px 2px var(--glow-color-20),
    0 0 64px 2px var(--glow-color-10);
}

.border-glow-card > :not(.edge-light) {
  position: relative;
  z-index: 2;
}

.glow-president {
  --card-bg: #070605;
  --border-radius: 10px;
  --glow-padding: 42px;
}

.glow-teachers {
  --card-bg: #0b0908;
  --border-radius: 0;
  --glow-padding: 38px;
  --fill-opacity: 0.22;
}

.portrait-card {
  display: grid;
  grid-template-columns: minmax(190px, 260px) minmax(92px, 1fr);
  gap: 22px;
  align-items: end;
  min-width: 0;
}

.president-copy {
  min-width: 360px;
  max-width: 700px;
}

.president-copy h2 {
  max-width: 700px;
  writing-mode: horizontal-tb;
  word-break: keep-all;
  overflow-wrap: normal;
}

.president-copy .eyebrow,
.president-copy li {
  writing-mode: horizontal-tb;
}

.president-copy li {
  word-break: normal;
  overflow-wrap: anywhere;
}

@media (max-width: 1080px) {
  .president {
    grid-template-columns: 1fr;
  }

  .president-copy {
    min-width: 0;
    max-width: none;
  }
}

.president-photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 30%;
  border: 1px solid var(--bronze);
  background: var(--charcoal);
}

.portrait-caption strong {
  display: block;
  font-size: 28px;
}

.portrait-caption span,
.meta,
.site-footer,
.lot-card p,
.image-card p,
.wide-card p {
  color: var(--muted);
}

.resume-list {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.resume-list li {
  padding-left: 18px;
  border-left: 3px solid var(--bronze);
}

.section-heading {
  justify-content: space-between;
  margin-bottom: 26px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.section-heading a {
  color: var(--bronze);
  font-weight: 700;
}

.cards {
  display: grid;
  gap: 24px;
}

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

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

.image-card,
.wide-card,
.lot-card,
.service-grid article,
.stats article,
.process-line article {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01)), var(--paper);
  border: 1px solid var(--line);
}

.image-card,
.wide-card,
.lot-card,
.teacher-card,
.chroma-card,
.lot-mini {
  transform: translateZ(0);
}

.image-card div,
.wide-card div,
.lot-card,
.service-grid article {
  padding: 22px;
}

.image-card,
.wide-card,
.lot-card,
.lot-mini,
.services-preview,
.hk-gallery,
.portrait-card,
.teacher-card,
.chroma-card {
  backface-visibility: hidden;
}

.cover {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.crop-porcelain {
  object-position: 25% 25%;
}

.crop-painting {
  object-position: 78% 20%;
}

.crop-jewelry {
  object-position: 25% 78%;
}

.crop-contemporary {
  object-position: 78% 78%;
}

.dark-band {
  width: 100%;
  max-width: none;
  padding-inline: max(18px, calc((100vw - 1180px) / 2));
  color: var(--ink);
  background: #080706;
}

.dark-band .section-heading,
.dark-band .section-heading a {
  color: var(--ink);
}

.lot-strip,
.lot-grid,
.service-grid,
.stats,
.process-line {
  display: grid;
  gap: 22px;
}

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

.lot-mini {
  color: var(--ink);
}

.lot-mini span {
  display: block;
  padding-top: 12px;
  font-size: 18px;
}

.lot-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.pos-1 { object-position: 16% 12%; }
.pos-2 { object-position: 50% 12%; }
.pos-3 { object-position: 84% 12%; }
.pos-4 { object-position: 16% 38%; }
.pos-5 { object-position: 50% 38%; }
.pos-6 { object-position: 84% 38%; }
.pos-7 { object-position: 16% 64%; }
.pos-8 { object-position: 50% 64%; }
.pos-9 { object-position: 84% 64%; }
.pos-10 { object-position: 16% 90%; }
.pos-11 { object-position: 50% 90%; }
.pos-12 { object-position: 84% 90%; }

.services-preview img,
.image-page-hero img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.teacher-section {
  width: 100%;
  max-width: none;
  padding-inline: max(18px, calc((100vw - 1180px) / 2));
  background:
    linear-gradient(180deg, rgba(184, 146, 92, 0.08), rgba(8, 7, 6, 0.62)),
    #0b0908;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-note {
  color: var(--muted);
  font-size: 15px;
}

.teacher-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}

.teacher-card {
  position: relative;
  overflow: hidden;
  min-height: 340px;
  display: grid;
  align-items: end;
  border: 1px solid var(--line);
  background: #050504;
}

.teacher-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, transparent 32%, rgba(5, 5, 4, 0.36) 58%, rgba(5, 5, 4, 0.92) 100%),
    linear-gradient(135deg, rgba(184, 146, 92, 0.12), transparent 46%);
}

.teacher-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.04);
  transition: transform 0.45s ease, filter 0.45s ease;
}

.teacher-card:hover img {
  transform: scale(1.04);
  filter: saturate(1) contrast(1.08);
}

.teacher-card div {
  position: relative;
  z-index: 2;
  padding: 18px;
}

.teacher-card h3 {
  margin: 0 0 4px;
  color: var(--ink);
  font-size: 24px;
}

.teacher-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.chroma-section {
  width: 100%;
  max-width: none;
  padding-inline: max(18px, calc((100vw - 1180px) / 2));
  background: #050504;
  color: var(--ink);
}

.chroma-section .section-heading a {
  color: var(--bronze);
}

.chroma-grid {
  position: relative;
  width: 100%;
  min-height: 640px;
  display: grid;
  grid-template-columns: repeat(var(--cols, 3), minmax(260px, 320px));
  justify-content: center;
  gap: 0.9rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 0;
  box-sizing: border-box;
  --x: 50%;
  --y: 50%;
  --r: 300px;
}

.chroma-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 300px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(165, 121, 69, 0.24);
  transition: border-color 0.3s ease, transform 0.3s ease;
  background: var(--card-gradient);
  --mouse-x: 50%;
  --mouse-y: 50%;
  --spotlight-color: rgba(255, 255, 255, 0.28);
}

.chroma-card:hover {
  border-color: var(--card-border);
  transform: translateY(-4px);
}

.chroma-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
  background: radial-gradient(circle at var(--mouse-x) var(--mouse-y), var(--spotlight-color), transparent 70%);
}

.chroma-card:hover::before {
  opacity: 1;
}

.chroma-img-wrapper {
  position: relative;
  z-index: 1;
  height: 190px;
  padding: 10px;
  background: transparent;
}

.chroma-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 6px;
}

.crop-service-left { object-position: 18% 50%; }
.crop-service-center { object-position: 50% 50%; }
.crop-service-right { object-position: 82% 50%; }
.crop-gallery,
.crop-meeting,
.crop-hall { object-position: center; }

.chroma-info {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  row-gap: 0.25rem;
  column-gap: 0.75rem;
  padding: 0.8rem 1rem 1rem;
  color: var(--ink);
  font-family: "Microsoft YaHei", system-ui, sans-serif;
}

.chroma-info .name {
  margin: 0;
  font-size: 21px;
}

.chroma-info .role {
  grid-column: 1 / -1;
  margin: 0;
  color: rgba(255, 250, 241, 0.72);
  font-size: 14px;
}

.chroma-info .handle,
.chroma-info .location {
  color: rgba(255, 250, 241, 0.58);
  font-size: 13px;
}

.chroma-info .location {
  grid-column: 1 / -1;
}

.chroma-overlay,
.chroma-fade {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: rgba(0, 0, 0, 0.001);
}

.chroma-overlay {
  z-index: 3;
  backdrop-filter: grayscale(1) brightness(0.78);
  -webkit-backdrop-filter: grayscale(1) brightness(0.78);
  mask-image: radial-gradient(circle var(--r) at var(--x) var(--y), transparent 0%, transparent 15%, rgba(0, 0, 0, 0.1) 30%, rgba(0, 0, 0, 0.22) 45%, rgba(0, 0, 0, 0.35) 60%, rgba(0, 0, 0, 0.5) 75%, rgba(0, 0, 0, 0.68) 88%, white 100%);
  -webkit-mask-image: radial-gradient(circle var(--r) at var(--x) var(--y), transparent 0%, transparent 15%, rgba(0, 0, 0, 0.1) 30%, rgba(0, 0, 0, 0.22) 45%, rgba(0, 0, 0, 0.35) 60%, rgba(0, 0, 0, 0.5) 75%, rgba(0, 0, 0, 0.68) 88%, white 100%);
}

.chroma-fade {
  z-index: 4;
  opacity: 1;
  transition: opacity 0.25s ease;
  backdrop-filter: grayscale(1) brightness(0.78);
  -webkit-backdrop-filter: grayscale(1) brightness(0.78);
  mask-image: radial-gradient(circle var(--r) at var(--x) var(--y), white 0%, white 15%, rgba(255, 255, 255, 0.9) 30%, rgba(255, 255, 255, 0.78) 45%, rgba(255, 255, 255, 0.65) 60%, rgba(255, 255, 255, 0.5) 75%, rgba(255, 255, 255, 0.32) 88%, transparent 100%);
  -webkit-mask-image: radial-gradient(circle var(--r) at var(--x) var(--y), white 0%, white 15%, rgba(255, 255, 255, 0.9) 30%, rgba(255, 255, 255, 0.78) 45%, rgba(255, 255, 255, 0.65) 60%, rgba(255, 255, 255, 0.5) 75%, rgba(255, 255, 255, 0.32) 88%, transparent 100%);
}

.page-hero {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(56px, 9vw, 110px) 0 clamp(28px, 5vw, 60px);
}

.page-hero p {
  max-width: 720px;
  color: var(--muted);
  font-size: 20px;
}

.image-page-hero {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 36px;
  align-items: center;
}

.wide-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  align-items: stretch;
}

.wide-card .cover {
  height: 100%;
  min-height: 240px;
}

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

.lot-card h2 {
  margin: 18px 0 6px;
  font-size: 20px;
}

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

.service-grid span {
  color: var(--bronze);
  font-family: Georgia, serif;
  font-size: 24px;
}

.service-grid h2 {
  margin-top: 20px;
  font-size: 24px;
}

.about-layout p {
  color: var(--muted);
  font-size: 18px;
}

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

.stats article {
  padding: 24px;
  text-align: center;
}

.stats strong {
  display: block;
  color: var(--bronze);
  font-family: Georgia, serif;
  font-size: 44px;
}

.process h2 {
  margin-bottom: 28px;
}

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

.process-line article {
  padding: 24px;
}

.process-line span {
  color: var(--bronze);
  font-size: 22px;
  font-weight: 700;
}

.contact-panel {
  padding: 42px;
  background: linear-gradient(135deg, rgba(142, 36, 51, 0.16), rgba(184, 146, 92, 0.08)), var(--paper);
  border: 1px solid var(--line);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding: 28px clamp(18px, 5vw, 72px);
  border-top: 1px solid var(--line);
}

@media (max-width: 920px) {
  .site-header,
  .intro-grid,
  .president,
  .hk-center,
  .services-preview,
  .about-layout,
  .image-page-hero {
    grid-template-columns: 1fr;
  }

  .site-header {
    display: grid;
    justify-items: start;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero {
    min-height: 620px;
  }

  .cards.three,
  .cards.two,
  .lot-strip,
  .lot-grid,
  .service-grid,
  .stats,
  .process-line {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .teacher-card {
    min-height: 320px;
  }

  .chroma-grid {
    grid-template-columns: repeat(2, minmax(260px, 320px));
    min-height: 980px;
  }

  .portrait-card {
    grid-template-columns: minmax(170px, 230px) minmax(120px, 1fr);
    max-width: 540px;
  }

  .president-copy {
    max-width: none;
  }

  .president-copy h2 {
    max-width: 760px;
  }

  .hk-gallery {
    grid-template-rows: 280px repeat(2, 150px);
  }

  .hk-gallery .hk-main {
    grid-column: 1 / -1;
    grid-row: auto;
  }
}

@media (max-width: 620px) {
  .hero {
    min-height: 580px;
  }

  .hero-content {
    margin-inline: 18px;
  }

  .hero-overlay {
    background: linear-gradient(0deg, rgba(12, 10, 9, 0.78), rgba(12, 10, 9, 0.24));
  }

  .nav a {
    padding: 6px 9px;
    font-size: 14px;
  }

  .cards.three,
  .cards.two,
  .lot-strip,
  .lot-grid,
  .service-grid,
  .stats,
  .process-line,
  .wide-card,
  .feature-list,
  .hk-gallery,
  .teacher-grid,
  .portrait-card {
    grid-template-columns: 1fr;
  }

  .teacher-card {
    min-height: 360px;
  }

  .hk-gallery {
    grid-template-rows: none;
  }

  .hk-gallery img,
  .hk-gallery .hk-main {
    height: 220px;
    grid-column: auto;
    grid-row: auto;
  }

  .cover,
  .services-preview img,
  .image-page-hero img {
    height: 280px;
  }

  .chroma-grid {
    grid-template-columns: minmax(0, 1fr);
    min-height: auto;
  }

  .chroma-card {
    min-height: 280px;
  }

  .chroma-overlay,
  .chroma-fade {
    display: none;
  }

  .border-glow-card::before,
  .border-glow-card::after,
  .border-glow-card > .edge-light {
    display: none;
  }

  .motion-big-title {
    font-size: clamp(42px, 18vw, 86px);
    white-space: normal;
    opacity: 0.08;
  }

  .portrait-card {
    align-items: start;
    gap: 14px;
  }

  .president-photo {
    max-width: 280px;
  }

  .contact-panel {
    padding: 28px;
  }
}