/* ============ 基础 ============ */
:root {
  --bg: #0a0a0c;
  --panel: #141418;
  --panel-2: #1a1a20;
  --line: rgba(255, 255, 255, .08);
  --text: #f4f4f6;
  --muted: #9b9ba6;
  --accent: #d4af37;
  --radius: 16px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  overflow-x: clip; /* clip 不创建滚动容器，保证 .filter sticky 生效 */
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* ============ 导航 ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .35s, border-color .35s, backdrop-filter .35s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(10, 10, 12, .82);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.logo { font-size: 19px; font-weight: 700; letter-spacing: .06em; }
.logo::after { content: "."; color: var(--accent); }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-size: 14px; color: var(--muted); letter-spacing: .04em;
  transition: color .25s;
}
.nav-links a:hover { color: var(--text); }

/* ============ Hero ============ */
.hero {
  position: relative; min-height: 82vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 130px 24px 150px; overflow: hidden;
}
.hero-glow {
  position: absolute; border-radius: 50%; filter: blur(110px); opacity: .35;
  pointer-events: none;
}
.hero-glow.g1 {
  width: 560px; height: 560px; top: -180px; left: 50%;
  transform: translateX(-85%);
  background: color-mix(in srgb, var(--accent) 38%, transparent);
  animation: drift 11s ease-in-out infinite alternate;
}
.hero-glow.g2 {
  width: 460px; height: 460px; bottom: -160px; left: 50%;
  transform: translateX(10%);
  background: color-mix(in srgb, var(--accent) 22%, #4a3f10);
  animation: drift 14s ease-in-out infinite alternate-reverse;
}
@keyframes drift {
  from { margin-top: 0; } to { margin-top: 60px; }
}
.hero-content { position: relative; max-width: 860px; }
.hero-eyebrow {
  font-size: 13px; letter-spacing: .5em; text-indent: .5em;
  color: var(--accent); margin-bottom: 28px; font-weight: 600;
}
.hero-title {
  font-size: clamp(34px, 6.4vw, 68px);
  font-weight: 800; line-height: 1.22; letter-spacing: .01em;
  margin-bottom: 26px;
}
.hero-sub {
  font-size: clamp(15px, 1.9vw, 19px); color: var(--muted);
  line-height: 1.9; margin-bottom: 44px;
}
.hero-cta {
  display: inline-block; padding: 15px 46px; border-radius: 999px;
  background: var(--accent); color: #101008;
  font-size: 15px; font-weight: 700; letter-spacing: .12em;
  transition: transform .3s, box-shadow .3s;
}
.hero-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 40px -8px color-mix(in srgb, var(--accent) 55%, transparent);
}
/* 首屏作品跑马灯 */
.hero-marquee {
  position: absolute; bottom: 0; left: 0; right: 0; padding-bottom: 36px;
  overflow: hidden; cursor: pointer;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.hero-marquee .track {
  display: flex; width: max-content;
  animation: mqScroll 42s linear infinite;
}
.hero-marquee:hover .track { animation-play-state: paused; }
.mq-item { flex-shrink: 0; margin-right: 14px; }
.mq-item img, .mq-item video {
  width: 216px; height: 121px; object-fit: cover; border-radius: 10px;
  border: 1px solid var(--line); opacity: .8; display: block;
  transition: opacity .3s, transform .3s, border-color .3s;
}
.mq-item:hover img, .mq-item:hover video {
  opacity: 1; transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
}
@keyframes mqScroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ============ 通用区块 ============ */
.section { max-width: 1200px; margin: 0 auto; padding: 96px 24px 0; }
#works { padding-top: 60px; }
.section:last-of-type { padding-bottom: 60px; }
.sec-head { text-align: center; margin-bottom: 34px; }
.sec-head h2 {
  font-size: clamp(26px, 3.4vw, 36px); font-weight: 700; letter-spacing: .04em;
  display: inline-block; position: relative;
}
.sec-head h2::after {
  content: ""; display: block; width: 42px; height: 3px; border-radius: 2px;
  background: var(--accent); margin: 16px auto 0;
}
.sec-desc { color: var(--muted); margin-top: 18px; font-size: 15px; }

/* 进场动画 */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============ 筛选（吸顶） ============ */
.filter {
  position: sticky; top: 72px; z-index: 60;
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: center;
  margin: 0 -10px 30px; padding: 10px;
  background: rgba(10, 10, 12, .86); backdrop-filter: blur(12px);
  border-radius: 999px;
}
.filter button {
  padding: 9px 24px; border-radius: 999px; cursor: pointer;
  background: var(--panel); border: 1px solid var(--line); color: var(--muted);
  font-size: 14px; letter-spacing: .05em; transition: all .28s;
}
.filter button:hover { color: var(--text); border-color: rgba(255,255,255,.2); }
.filter button.active {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  border-color: var(--accent); color: var(--accent); font-weight: 600;
}

/* ============ 作品网格 ============ */
.grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 22px; grid-auto-flow: dense;
}
.card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: var(--panel); border: 1px solid var(--line); cursor: pointer;
  opacity: 0; transform: translateY(22px);
  transition: opacity .6s ease, transform .6s ease, border-color .3s;
}
.card.in { opacity: 1; transform: none; }
.card:hover { border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.card.featured { grid-column: span 2; }
@media (max-width: 900px) {
  .card.featured { grid-column: span 1; }
}
.card-media {
  position: relative; aspect-ratio: 16 / 9; overflow: hidden;
  background: #000;
}
.card-media img, .card-media video {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .6s cubic-bezier(.2, .6, .2, 1);
}
.card:hover .card-media img, .card:hover .card-media video { transform: scale(1.07); }
.card-badge {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  padding: 5px 13px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: rgba(10, 10, 12, .62); backdrop-filter: blur(8px);
  color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
}
.card-play {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  pointer-events: none; z-index: 2;
}
.card-play span {
  width: 56px; height: 56px; border-radius: 50%;
  background: rgba(10, 10, 12, .55); backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, .25);
  display: flex; align-items: center; justify-content: center;
  transition: transform .3s, background .3s;
}
.card:hover .card-play span { transform: scale(1.12); background: color-mix(in srgb, var(--accent) 80%, transparent); }
.card-play svg { width: 20px; height: 20px; fill: #fff; margin-left: 3px; }
.card:hover .card-play svg { fill: #101008; }
.card-info { padding: 20px 22px 22px; }
.card-info h3 {
  font-size: 17px; font-weight: 600; margin-bottom: 8px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card-info p {
  font-size: 13px; color: var(--muted); line-height: 1.65;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  min-height: 43px;
}
.card-empty {
  grid-column: 1 / -1; text-align: center; padding: 90px 20px;
  color: var(--muted); font-size: 15px;
  background: var(--panel); border: 1px dashed var(--line); border-radius: var(--radius);
}

/* ============ 分类入口（首页） ============ */
.cat-row {
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: center;
  margin: 0 0 36px;
}
.cat-chip {
  padding: 10px 26px; border-radius: 999px;
  background: var(--panel); border: 1px solid var(--line); color: var(--muted);
  font-size: 14px; letter-spacing: .05em; cursor: pointer;
  transition: all .28s;
}
.cat-chip:hover {
  color: var(--text); border-color: rgba(255,255,255,.2); transform: translateY(-2px);
}
.cat-chip.accent {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  color: var(--accent); font-weight: 600;
}
.more-wrap { text-align: center; margin-top: 44px; }
.btn-more {
  display: inline-block; padding: 14px 46px; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  color: var(--accent); font-size: 15px; letter-spacing: .1em;
  transition: all .3s;
}
.btn-more:hover { background: var(--accent); color: #101008; }

/* ============ 服务报价 ============ */
.svc-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px; max-width: 1040px; margin: 0 auto;
}
.svc-card {
  position: relative; background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 32px 30px;
  display: flex; flex-direction: column;
  transition: border-color .3s, transform .3s;
}
.svc-card:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  transform: translateY(-5px);
}
.svc-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 18px; }
.svc-price {
  font-size: 30px; font-weight: 800; color: var(--accent);
  letter-spacing: .02em; margin-bottom: 14px;
}
.svc-dur {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--muted); letter-spacing: .04em; margin-bottom: 18px;
}
.svc-dur svg { width: 15px; height: 15px; fill: var(--accent); flex-shrink: 0; }
.svc-desc {
  font-size: 13.5px; color: var(--muted); line-height: 1.85;
  border-top: 1px solid var(--line); padding-top: 18px; margin-top: auto;
}

/* ============ 作品集页（works.html） ============ */
.page-hero { padding: 150px 24px 0; text-align: center; }
.page-hero h1 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; letter-spacing: .04em; }
.page-hero p { color: var(--muted); margin-top: 16px; font-size: 15px; }
.works-page { padding-top: 44px; }
.works-page .filter { margin-top: 4px; }
.pager {
  display: flex; gap: 10px; justify-content: center; align-items: center;
  margin-top: 48px; flex-wrap: wrap;
}
.pg-btn {
  min-width: 42px; padding: 10px 18px; border-radius: 10px;
  background: var(--panel); border: 1px solid var(--line); color: var(--muted);
  font-size: 14px; cursor: pointer; transition: all .25s;
}
.pg-btn:hover:not(:disabled) { color: var(--text); border-color: rgba(255,255,255,.25); }
.pg-btn.active {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  border-color: var(--accent); color: var(--accent); font-weight: 600;
}
.pg-btn:disabled { opacity: .35; cursor: not-allowed; }

/* ============ 关于 ============ */
.about-wrap { max-width: 780px; margin: 0 auto; }
.about-text {
  font-size: 16px; line-height: 2.1; color: #c9c9d2; text-align: center;
  white-space: pre-wrap;
}
.stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px;
}
.stat {
  text-align: center; padding: 30px 10px;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  transition: border-color .3s, transform .3s;
}
.stat:hover { border-color: color-mix(in srgb, var(--accent) 40%, transparent); transform: translateY(-4px); }
.stat-num { font-size: clamp(28px, 4vw, 40px); font-weight: 800; color: var(--accent); }
.stat-label { font-size: 13px; color: var(--muted); margin-top: 8px; letter-spacing: .1em; }

/* ============ 联系 ============ */
.contact-grid {
  display: grid; grid-template-columns: 300px 1fr; gap: 28px; align-items: stretch;
  max-width: 880px; margin: 0 auto;
}
.qr-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px; text-align: center;
  transition: border-color .3s;
}
.qr-card:hover { border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.qr-box {
  width: 100%; aspect-ratio: 1; border-radius: 12px; overflow: hidden;
  background: var(--panel-2); display: flex; align-items: center; justify-content: center;
}
.qr-box img { width: 100%; height: 100%; object-fit: contain; }
.qr-tip { margin-top: 20px; font-size: 14px; color: var(--muted); letter-spacing: .06em; }
.socials {
  display: flex; flex-direction: column; gap: 14px; justify-content: center;
}
.social-btn {
  display: flex; align-items: center; gap: 16px;
  padding: 18px 24px; border-radius: 14px;
  background: var(--panel); border: 1px solid var(--line);
  transition: border-color .3s, transform .3s, background .3s;
}
.social-btn:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  transform: translateX(6px);
  background: color-mix(in srgb, var(--accent) 6%, var(--panel));
}
.social-ico {
  width: 40px; height: 40px; border-radius: 11px; flex-shrink: 0;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent); display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 700;
}
.social-btn b { font-size: 15px; font-weight: 600; display: block; }
.social-btn small { color: var(--muted); font-size: 12.5px; }

/* ============ 页脚 ============ */
.footer {
  margin-top: 110px; padding: 34px 24px; text-align: center;
  color: var(--muted); font-size: 13px; letter-spacing: .08em;
  border-top: 1px solid var(--line);
}

/* ============ Lightbox ============ */
.lightbox {
  position: fixed; inset: 0; z-index: 200; display: none;
  background: rgba(5, 5, 7, .92); backdrop-filter: blur(10px);
  align-items: center; justify-content: center; flex-direction: column; padding: 40px 20px;
}
.lightbox.open { display: flex; }
.lb-body {
  max-width: min(1100px, 94vw); max-height: 78vh;
  display: flex; align-items: center; justify-content: center;
}
.lb-body img { max-width: 100%; max-height: 78vh; border-radius: 12px; box-shadow: 0 30px 80px rgba(0,0,0,.6); }
.lb-body video { max-width: 100%; max-height: 78vh; border-radius: 12px; background: #000; }
.lb-body iframe { width: min(1000px, 92vw); height: min(560px, 70vh); border: 0; border-radius: 12px; background: #000; }
.lb-info { margin-top: 20px; text-align: center; }
.lb-info h3 { font-size: 18px; font-weight: 600; }
.lb-info p { font-size: 13px; color: var(--muted); margin-top: 6px; }
.lb-close {
  position: absolute; top: 22px; right: 30px;
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255,255,255,.08); border: 1px solid var(--line);
  color: #fff; font-size: 24px; cursor: pointer; line-height: 1;
  transition: background .25s, transform .25s;
}
.lb-close:hover { background: rgba(255,255,255,.16); transform: rotate(90deg); }

/* ============ 响应式 ============ */
@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; }
  .qr-card { max-width: 320px; margin: 0 auto; width: 100%; }
}
@media (max-width: 640px) {
  .nav-links { gap: 20px; }
  .nav-links a { font-size: 13px; }
  .grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; gap: 14px; }
  .section { padding: 70px 18px 0; }
  .hero { min-height: 76vh; padding-bottom: 130px; }
  .mq-item img, .mq-item video { width: 150px; height: 84px; }
  .filter { top: 60px; }
  .page-hero { padding-top: 120px; }
  .page-hero h1 { font-size: 26px; }
}