/* ============================================================
   张春萍 · 现代城市山水画派创始人 — 个人官网
   设计语言: 宣纸 / 墨 / 朱砂
   ============================================================ */

:root {
  --paper: #f6f2ea;
  --paper-2: #efe9dd;
  --ink: #211d18;
  --ink-soft: #463f35;
  --muted: #8a8175;
  --cinnabar: #b0392c;
  --cinnabar-deep: #8e2c22;
  --gold: #a58a4e;
  --line: rgba(33, 29, 24, 0.14);
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow: 0 24px 60px -24px rgba(33, 29, 24, 0.28);
  --header-h: 72px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--serif);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 宣纸纹理 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.5;
  background-image: radial-gradient(rgba(33,29,24,0.045) 1px, transparent 1px);
  background-size: 5px 5px;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
::selection { background: var(--cinnabar); color: #fff; }

.container { width: min(1200px, 92vw); margin: 0 auto; }

/* ============ 印章 Logo ============ */
.seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--cinnabar);
  color: #f6f2ea;
  font-size: 15px;
  line-height: 1.15;
  letter-spacing: 1px;
  border-radius: 6px;
  box-shadow: inset 0 0 0 1.5px rgba(246,242,234,0.55), inset 0 0 0 3.5px var(--cinnabar);
  text-align: center;
  flex-shrink: 0;
}

/* ============ 顶部导航 ============ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.35s, box-shadow 0.35s, backdrop-filter 0.35s;
}
.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink);
}
.brand-name { font-size: 20px; font-weight: 700; letter-spacing: 4px; }
.brand-sub { font-size: 11px; color: var(--muted); letter-spacing: 3px; margin-top: 2px; }

.site-nav { display: flex; gap: 38px; align-items: center; }
.site-nav a {
  font-size: 15px;
  letter-spacing: 3px;
  color: var(--ink-soft);
  position: relative;
  padding: 6px 0;
  transition: color 0.25s;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0;
  width: 0; height: 2px;
  background: var(--cinnabar);
  transition: width 0.3s, left 0.3s;
}
.site-nav a:hover, .site-nav a.active { color: var(--cinnabar); }
.site-nav a:hover::after, .site-nav a.active::after { width: 100%; left: 0; }

.site-header.scrolled {
  background: rgba(246, 242, 234, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--line);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px; height: 40px;
  position: relative;
  z-index: 120;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--ink);
  margin: 5px auto;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ 首屏 Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url("../img/hero.jpg") center 62% / cover no-repeat;
  filter: saturate(0.92);
  transform: scale(1.04);
  animation: heroZoom 18s ease-out forwards;
}
@keyframes heroZoom { to { transform: scale(1); } }
.hero-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(246,242,234,0.72) 0%, rgba(246,242,234,0.18) 34%, rgba(246,242,234,0.02) 55%, rgba(246,242,234,0.55) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding-top: var(--header-h);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  width: min(1200px, 92vw);
  margin: 0 auto;
  padding-bottom: 110px;
}
.hero-title-block {
  max-width: 660px;
  background: rgba(246, 242, 234, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(33, 29, 24, 0.1);
  border-left: 3px solid var(--cinnabar);
  box-shadow: 0 24px 60px -30px rgba(33, 29, 24, 0.35);
  padding: clamp(22px, 3vw, 40px) clamp(22px, 3vw, 44px);
}
.hero-kicker {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 6px;
  color: var(--cinnabar);
  margin-bottom: 22px;
  text-transform: uppercase;
}
.hero-title {
  font-size: clamp(52px, 8.5vw, 108px);
  font-weight: 700;
  letter-spacing: clamp(6px, 1.2vw, 16px);
  line-height: 1.12;
  color: var(--ink);
}
.hero-sub {
  margin-top: 18px;
  font-size: clamp(16px, 1.6vw, 20px);
  letter-spacing: 4px;
  color: var(--ink-soft);
}
.hero-desc {
  margin-top: 26px;
  max-width: 520px;
  color: var(--ink-soft);
  font-size: 15.5px;
  border-left: 3px solid var(--cinnabar);
  padding-left: 18px;
}
.hero-actions { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }

/* 竖排题字 */
.hero-vertical {
  writing-mode: vertical-rl;
  font-size: clamp(20px, 2.4vw, 30px);
  letter-spacing: 14px;
  color: var(--ink);
  border-right: 1px solid var(--line);
  border-left: 1px solid var(--line);
  padding: 18px 16px;
  background: rgba(246,242,234,0.55);
  backdrop-filter: blur(2px);
}
.hero-vertical .seal-mini {
  display: inline-block;
  background: var(--cinnabar);
  color: #f6f2ea;
  font-size: 13px;
  padding: 8px 4px;
  border-radius: 4px;
  letter-spacing: 2px;
  margin-top: 16px;
}

.scroll-cue {
  position: absolute;
  bottom: 26px; left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 4px;
}
.scroll-cue::after {
  content: "";
  width: 1px; height: 44px;
  background: linear-gradient(var(--muted), transparent);
  animation: cueDrop 2.2s ease-in-out infinite;
}
@keyframes cueDrop { 0% { transform: scaleY(0); transform-origin: top; } 55% { transform: scaleY(1); transform-origin: top; } 56% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ============ 通用按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 30px;
  font-size: 15px;
  letter-spacing: 3px;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: rgba(246, 242, 234, 0.82);
  transition: all 0.3s;
  position: relative;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: var(--cinnabar); border-color: var(--cinnabar); }
.btn-cinnabar { background: var(--cinnabar); border-color: var(--cinnabar); color: #fff; }
.btn-cinnabar:hover { background: var(--cinnabar-deep); border-color: var(--cinnabar-deep); color: #fff; }

/* ============ 区块通用 ============ */
.section { padding: 110px 0; }
.section-tight { padding: 80px 0; }
.section-eyebrow {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 6px;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(30px, 4vw, 44px);
  letter-spacing: 6px;
  font-weight: 700;
  line-height: 1.3;
}
.section-title .accent { color: var(--cinnabar); }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.section-head p.lede { max-width: 460px; color: var(--muted); font-size: 15px; }

.hr-brush {
  height: 1px;
  border: none;
  background: linear-gradient(90deg, transparent, var(--line) 18%, var(--line) 82%, transparent);
}

/* 进场动画（仅在 JS 可用且未开启“减少动态”时启用） */
html.js .reveal { opacity: 0; transform: translateY(34px); transition: opacity 0.9s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.9s cubic-bezier(0.22, 0.61, 0.36, 1); }
html.js .reveal.visible { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.12s; }
.reveal.d2 { transition-delay: 0.24s; }
.reveal.d3 { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .hero-bg { animation: none !important; }
  .marquee { animation: none !important; }
  .scroll-cue::after { animation: none !important; }
  html { scroll-behavior: auto; }
}

/* ============ 作品网格 ============ */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
}
.work-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  padding: 14px;
  cursor: pointer;
  transition: transform 0.4s, box-shadow 0.4s;
}
.work-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.work-frame { position: relative; overflow: hidden; background: var(--paper-2); }
.work-frame img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.work-card:hover .work-frame img { transform: scale(1.06); }
.work-placeholder-tag {
  position: absolute;
  top: 10px; right: 10px;
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 2px;
  color: #fff;
  background: rgba(33,29,24,0.62);
  padding: 4px 10px;
  border-radius: 3px;
  pointer-events: none;
}
.work-meta { padding: 18px 8px 8px; }
.work-title { font-size: 19px; letter-spacing: 2px; font-weight: 700; }
.work-title em { font-style: normal; color: var(--cinnabar); }
.work-info { font-size: 12.5px; color: var(--muted); margin-top: 6px; letter-spacing: 1px; }
.work-collection { font-size: 12.5px; color: var(--gold); margin-top: 4px; letter-spacing: 1px; }

/* 筛选器 */
.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 48px; }
.filter-chip {
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 3px;
  padding: 9px 22px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  border-radius: 999px;
  transition: all 0.3s;
}
.filter-chip:hover { border-color: var(--ink); color: var(--ink); }
.filter-chip.active { background: var(--ink); border-color: var(--ink); color: var(--paper); }

/* ============ 京华韵专题 ============ */
.jinghua-section {
  background: #17140f;
  color: #e9e2d4;
  position: relative;
  overflow: hidden;
}
.jinghua-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 40% at 80% 10%, rgba(165,138,78,0.12), transparent);
  pointer-events: none;
}
.jinghua-section .section-title { color: #f3ecdd; }
.jinghua-section .section-eyebrow { color: var(--gold); }
.jinghua-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 70px;
  align-items: center;
}
.jinghua-text p { color: rgba(233,226,212,0.82); font-size: 15.5px; margin-bottom: 18px; }
.jinghua-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: rgba(233,226,212,0.16); margin-top: 36px; border: 1px solid rgba(233,226,212,0.16); }
.jinghua-fact { background: #17140f; padding: 22px 24px; }
.jinghua-fact b { display: block; font-size: 24px; color: var(--gold); letter-spacing: 2px; }
.jinghua-fact span { font-size: 12.5px; color: rgba(233,226,212,0.65); letter-spacing: 2px; }

/* 长卷滚动容器 */
.scroll-painting {
  height: 620px;
  overflow-y: auto;
  border: 1px solid rgba(233,226,212,0.2);
  background: #100e0a;
  box-shadow: 0 40px 80px -30px rgba(0,0,0,0.7);
  scrollbar-width: thin;
  scrollbar-color: var(--gold) #100e0a;
}
.scroll-painting::-webkit-scrollbar { width: 6px; }
.scroll-painting::-webkit-scrollbar-thumb { background: var(--gold); }
.scroll-painting img { width: 100%; }
.scroll-painting-hint {
  text-align: center;
  font-size: 11.5px;
  letter-spacing: 4px;
  color: rgba(233,226,212,0.55);
  margin-top: 14px;
  font-family: var(--sans);
}

/* ============ 关于 teaser ============ */
.about-teaser { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 70px; align-items: center; }
.about-photo { position: relative; }
.about-photo img { width: 100%; box-shadow: var(--shadow); }
.about-photo::after {
  content: "墨 · 纸 · 砚";
  position: absolute;
  right: -18px; top: 34px;
  writing-mode: vertical-rl;
  letter-spacing: 10px;
  font-size: 15px;
  color: var(--muted);
  background: var(--paper);
  padding: 14px 6px;
  border: 1px solid var(--line);
}
.about-teaser p { color: var(--ink-soft); margin-bottom: 16px; font-size: 15.5px; }
.cred-list { margin: 26px 0 34px; display: flex; flex-wrap: wrap; gap: 10px; }
.cred-pill {
  font-family: var(--sans);
  font-size: 12.5px;
  letter-spacing: 2px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  border-radius: 999px;
  background: #fff;
}
.cred-pill.hot { border-color: var(--cinnabar); color: var(--cinnabar); }

/* ============ 媒体跑马灯 ============ */
.press-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 26px 0;
  overflow: hidden;
  background: var(--paper-2);
}
.marquee { display: flex; width: max-content; animation: marquee 36s linear infinite; }
.press-strip:hover .marquee { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.press-item {
  font-size: 15px;
  letter-spacing: 4px;
  color: var(--muted);
  padding: 0 34px;
  white-space: nowrap;
  border-right: 1px solid var(--line);
}

/* ============ 数字统计 ============ */
.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.stat { background: var(--paper); padding: 40px 20px; text-align: center; }
.stat b { font-size: clamp(30px, 3.6vw, 46px); letter-spacing: 2px; display: block; color: var(--ink); }
.stat b i { font-style: normal; font-size: 0.5em; color: var(--cinnabar); vertical-align: 4px; margin-left: 2px; }
.stat span { font-size: 13px; color: var(--muted); letter-spacing: 3px; }

/* ============ 影像 ============ */
.films-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 34px; }
.film-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform 0.4s, box-shadow 0.4s;
}
.film-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.film-poster { position: relative; overflow: hidden; }
.film-poster img { width: 100%; height: 300px; object-fit: cover; filter: saturate(0.85); transition: transform 0.7s; }
.film-card:hover .film-poster img { transform: scale(1.05); }
.film-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.film-play .play-btn {
  width: 66px; height: 66px;
  border-radius: 50%;
  background: rgba(246,242,234,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.35s, background 0.35s;
}
.film-play .play-btn::after {
  content: "";
  border-style: solid;
  border-width: 9px 0 9px 15px;
  border-color: transparent transparent transparent var(--cinnabar);
  margin-left: 4px;
}
.film-card:hover .play-btn { transform: scale(1.12); background: var(--paper); }
.film-duration {
  position: absolute;
  bottom: 12px; right: 12px;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 1px;
  background: rgba(23,20,15,0.8);
  color: #f3ecdd;
  padding: 4px 10px;
  border-radius: 3px;
}
.film-body { padding: 22px 24px 26px; }
.film-title { font-size: 19px; letter-spacing: 1.5px; font-weight: 700; }
.film-source { font-size: 12.5px; color: var(--gold); margin-top: 8px; letter-spacing: 1px; }
.film-pending {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--cinnabar);
  border: 1px dashed var(--cinnabar);
  padding: 4px 12px;
  border-radius: 999px;
}

/* ============ 时间轴（艺术年表）============ */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 6px; top: 6px; bottom: 6px;
  width: 1px;
  background: var(--line);
}
.tl-item { position: relative; padding-bottom: 44px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -33px; top: 10px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--cinnabar);
}
.tl-year { font-size: 22px; font-weight: 700; color: var(--cinnabar); letter-spacing: 2px; }
.tl-item h4 { font-size: 17px; letter-spacing: 1.5px; margin: 8px 0 6px; }
.tl-item p { color: var(--muted); font-size: 14.5px; max-width: 720px; }

/* ============ 荣誉墙 ============ */
.honor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.honor-card {
  background: #fff;
  border: 1px solid var(--line);
  padding: 26px 26px 24px;
  position: relative;
  transition: transform 0.35s, box-shadow 0.35s;
}
.honor-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.honor-card::before {
  content: "";
  position: absolute;
  top: 0; left: 26px;
  width: 40px; height: 3px;
  background: var(--cinnabar);
}
.honor-year { font-family: var(--sans); font-size: 12px; letter-spacing: 3px; color: var(--gold); }
.honor-card h4 { font-size: 16.5px; letter-spacing: 1px; margin: 10px 0 6px; line-height: 1.6; }
.honor-card p { font-size: 13px; color: var(--muted); }

/* 收藏机构 */
.museum-wall { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.museum-cell { background: var(--paper); padding: 30px 24px; display: flex; align-items: center; gap: 14px; transition: background 0.3s; }
.museum-cell:hover { background: #fff; }
.museum-cell .dot { width: 7px; height: 7px; background: var(--cinnabar); transform: rotate(45deg); flex-shrink: 0; }
.museum-cell div b { display: block; font-size: 15px; letter-spacing: 1px; }
.museum-cell div span { font-size: 12.5px; color: var(--muted); }

/* ============ 联系页 ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 70px; align-items: start; }
.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  padding: 34px;
  margin-bottom: 26px;
}
.contact-card h3 { font-size: 19px; letter-spacing: 3px; margin-bottom: 14px; display: flex; align-items: center; gap: 12px; }
.contact-card h3 .ico { color: var(--cinnabar); font-size: 17px; }
.contact-card p { color: var(--ink-soft); font-size: 14.5px; }
.contact-email {
  display: inline-block;
  margin-top: 10px;
  font-size: 18px;
  letter-spacing: 1px;
  color: var(--cinnabar);
  border-bottom: 1px solid rgba(176,57,44,0.35);
  padding-bottom: 3px;
  transition: border-color 0.3s;
}
.contact-email:hover { border-color: var(--cinnabar); }
.contact-note { margin-top: 10px; font-size: 12px; color: var(--muted); font-family: var(--sans); }

/* 表单 */
.inquiry-form { background: #fff; border: 1px solid var(--line); padding: 40px; }
.inquiry-form h3 { font-size: 21px; letter-spacing: 3px; margin-bottom: 8px; }
.inquiry-form .form-sub { font-size: 13.5px; color: var(--muted); margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-field { margin-bottom: 22px; }
.form-field label {
  display: block;
  font-family: var(--sans);
  font-size: 12.5px;
  letter-spacing: 2px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.form-field label .req { color: var(--cinnabar); }
.form-field input, .form-field textarea, .form-field select {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 13px 16px;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink);
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
  border-radius: 0;
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(33,29,24,0.06);
}
.form-field textarea { min-height: 130px; resize: vertical; }
.form-field.error input, .form-field.error textarea, .form-field.error select { border-color: var(--cinnabar); }
.form-field .err-msg { display: none; font-size: 12px; color: var(--cinnabar); margin-top: 6px; font-family: var(--sans); }
.form-field.error .err-msg { display: block; }
.form-success {
  display: none;
  background: rgba(165,138,78,0.12);
  border: 1px solid var(--gold);
  color: var(--ink-soft);
  padding: 16px 20px;
  font-size: 14px;
  margin-bottom: 24px;
  letter-spacing: 1px;
}
.form-success.show { display: block; }
.intl-note {
  margin-top: 26px;
  padding: 20px 24px;
  background: var(--paper-2);
  border-left: 3px solid var(--gold);
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.9;
}
.intl-note b { letter-spacing: 1px; }

/* ============ 页脚 ============ */
.site-footer {
  background: #17140f;
  color: rgba(233,226,212,0.75);
  padding: 70px 0 34px;
  position: relative;
  z-index: 2;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 46px;
  border-bottom: 1px solid rgba(233,226,212,0.14);
}
.footer-brand { display: flex; gap: 16px; align-items: flex-start; }
.footer-brand .seal { width: 50px; height: 50px; font-size: 17px; }
.footer-brand h4 { color: #f3ecdd; font-size: 20px; letter-spacing: 4px; }
.footer-brand p { font-size: 13px; margin-top: 12px; line-height: 1.9; }
.footer-col h5 { color: #f3ecdd; font-size: 14px; letter-spacing: 4px; margin-bottom: 18px; }
.footer-col a, .footer-col span { display: block; font-size: 13.5px; padding: 5px 0; color: rgba(233,226,212,0.66); transition: color 0.25s; letter-spacing: 1px; }
.footer-col a:hover { color: var(--gold); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 28px;
  font-size: 12px;
  color: rgba(233,226,212,0.45);
  letter-spacing: 1px;
}

/* 返回顶部 */
.back-top {
  position: fixed;
  right: 26px; bottom: 26px;
  width: 46px; height: 46px;
  border: 1px solid var(--line);
  background: rgba(246,242,234,0.92);
  backdrop-filter: blur(6px);
  color: var(--ink);
  font-size: 17px;
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s, background 0.35s, color 0.35s;
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { background: var(--ink); color: var(--paper); }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .works-grid { grid-template-columns: repeat(2, 1fr); }
  .jinghua-grid, .about-teaser, .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .jinghua-grid { gap: 56px; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .museum-wall { grid-template-columns: repeat(2, 1fr); }
  .films-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-vertical { display: none; }
  .site-nav {
    position: fixed;
    inset: 0;
    background: rgba(246,242,234,0.98);
    flex-direction: column;
    justify-content: center;
    gap: 30px;
    transform: translateY(-100%);
    transition: transform 0.45s cubic-bezier(0.22, 0.61, 0.36, 1);
    z-index: 110;
  }
  .site-nav.open { transform: none; }
  .site-nav a { font-size: 22px; letter-spacing: 6px; }
  .nav-toggle { display: block; }
}
@media (max-width: 640px) {
  .works-grid { grid-template-columns: 1fr; }
  .work-frame img { height: 300px; }
  .form-row { grid-template-columns: 1fr; }
  .honor-grid { grid-template-columns: 1fr; }
  .museum-wall { grid-template-columns: 1fr; }
  .section { padding: 76px 0; }
  .hero-inner { padding-bottom: 80px; }
  .jinghua-facts { grid-template-columns: 1fr; }
  .scroll-painting { height: 440px; }
  .brand-sub { display: none; }
}