/* ================= 设计作品集 · 极简纯白画廊 ================= */

:root {
  --ink: #14110f;
  --ink-2: #4a4643;
  --ink-3: #8b8580;
  --ink-4: #b8b2ac;
  --line: #e8e4e0;
  --line-2: #f2efec;
  --bg: #ffffff;
  --bg-soft: #faf8f6;
  --accent: #14110f;
  --radius: 2px;
  --maxw: 1440px;
  --gap: 28px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.no-scroll { overflow: hidden; }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 40px; }
.wrap-narrow { max-width: 900px; margin: 0 auto; padding: 0 40px; }

/* ---------------- 顶部导航 ---------------- */

.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255,255,255,.88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-2);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 40px;
  height: 72px; display: flex; align-items: center; gap: 40px;
}
.brand { display: flex; align-items: baseline; gap: 12px; flex-shrink: 0; }
.brand-name {
  font-size: 19px; font-weight: 600; letter-spacing: .14em; white-space: nowrap;
}
.brand-logo { height: 30px; width: auto; }
.brand-tag {
  font-size: 10px; letter-spacing: .26em; color: var(--ink-4);
  text-transform: uppercase; white-space: nowrap;
}
@media (max-width: 900px) { .brand-tag { display: none; } }

.nav-links { display: flex; align-items: center; gap: 30px; flex: 1; overflow: hidden; }
.nav-links a {
  font-size: 13.5px; color: var(--ink-2); letter-spacing: .04em;
  white-space: nowrap; position: relative; padding: 4px 0;
  transition: color .25s var(--ease);
}
.nav-links a::after {
  content: ''; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px;
  background: var(--ink); transition: right .3s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after { right: 0; }
.nav-links a.active { color: var(--ink); }

.nav-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.icon-btn {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 50%; transition: background .2s;
}
.icon-btn:hover { background: var(--bg-soft); }
.icon-btn svg { width: 18px; height: 18px; stroke: var(--ink); fill: none; stroke-width: 1.5; }

.nav-toggle { display: none; }
@media (max-width: 820px) {
  .nav-inner { height: 60px; padding: 0 20px; gap: 16px; }
  .nav-links {
    position: fixed; inset: 60px 0 auto 0; background: #fff; flex-direction: column;
    align-items: flex-start; gap: 0; padding: 8px 20px 24px;
    border-bottom: 1px solid var(--line); display: none; overflow: visible;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 0; width: 100%; border-bottom: 1px solid var(--line-2); font-size: 15px; }
  .nav-toggle { display: grid; }
}

/* ---------------- 搜索覆盖层 ---------------- */

.search-overlay {
  position: fixed; inset: 0; z-index: 90; background: rgba(255,255,255,.97);
  display: none; padding-top: 16vh;
  animation: fadeIn .25s var(--ease);
}
.search-overlay.open { display: block; }
.search-box { max-width: 720px; margin: 0 auto; padding: 0 24px; }
.search-box form { display: flex; align-items: center; gap: 14px; border-bottom: 1px solid var(--ink); padding-bottom: 14px; }
.search-box input {
  flex: 1; border: none; outline: none; background: none;
  font-size: 26px; font-weight: 300; letter-spacing: .02em; color: var(--ink);
}
.search-box input::placeholder { color: var(--ink-4); }
.search-hint { margin-top: 22px; font-size: 12.5px; color: var(--ink-3); }
.search-hint b { font-weight: 500; color: var(--ink-2); display: block; margin-bottom: 10px;
  font-size: 10.5px; letter-spacing: .2em; text-transform: uppercase; }
.hint-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.hint-tags a {
  padding: 6px 14px; border: 1px solid var(--line); border-radius: 100px;
  font-size: 12.5px; color: var(--ink-2); transition: all .2s;
}
.hint-tags a:hover { border-color: var(--ink); color: var(--ink); }
.search-close { position: absolute; top: 22px; right: 32px; }

@keyframes fadeIn { from { opacity: 0 } to { opacity: 1 } }

/* ---------------- Hero ---------------- */

.hero { padding: 96px 0 72px; text-align: center; }
.hero h1 {
  margin: 0 0 20px; font-size: clamp(30px, 4.6vw, 60px); font-weight: 300;
  letter-spacing: .05em; line-height: 1.28;
}
.hero p { margin: 0 auto; max-width: 620px; color: var(--ink-3); font-size: 14.5px; letter-spacing: .06em; }
.hero-meta {
  margin-top: 40px; display: flex; justify-content: center; gap: 56px;
  font-size: 11px; letter-spacing: .2em; color: var(--ink-4); text-transform: uppercase;
}
.hero-meta b { display: block; font-size: 26px; font-weight: 300; color: var(--ink); letter-spacing: .02em; margin-bottom: 2px; }
@media (max-width: 700px) { .hero { padding: 56px 0 40px; } .hero-meta { gap: 32px; } }

/* ---------------- 区块标题 ---------------- */

.section { padding: 56px 0; }
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px; margin-bottom: 34px; padding-bottom: 16px; border-bottom: 1px solid var(--line);
}
.section-head h2 { margin: 0; font-size: 20px; font-weight: 500; letter-spacing: .1em; }
.section-head .sub { font-size: 11px; letter-spacing: .2em; color: var(--ink-4); text-transform: uppercase; }
.section-head a.more { font-size: 12.5px; color: var(--ink-3); white-space: nowrap; transition: color .2s; }
.section-head a.more:hover { color: var(--ink); }

/* ---------------- 分类网格 ---------------- */

.cat-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: var(--gap);
}
.cat-card { display: block; position: relative; overflow: hidden; background: var(--bg-soft); }
.cat-card .thumb { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--bg-soft); }
.cat-card .thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.1s var(--ease), filter .5s;
}
.cat-card:hover .thumb img { transform: scale(1.055); }
.cat-card .thumb.empty::after {
  content: '暂无作品'; position: absolute; inset: 0; display: grid; place-items: center;
  color: var(--ink-4); font-size: 12px; letter-spacing: .18em;
}
.cat-card .meta { padding: 16px 2px 4px; display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.cat-card .meta h3 { margin: 0; font-size: 16px; font-weight: 500; letter-spacing: .06em; }
.cat-card .meta span { font-size: 11px; color: var(--ink-4); letter-spacing: .12em; white-space: nowrap; }
.cat-card .desc { padding: 0 2px; font-size: 12.5px; color: var(--ink-3); line-height: 1.6;
  overflow: hidden; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; }

/* ---------------- 筛选条 ---------------- */

.filters { border-bottom: 1px solid var(--line); padding-bottom: 4px; margin-bottom: 34px; }
.filter-row { display: flex; align-items: flex-start; gap: 18px; padding: 11px 0; }
.filter-row + .filter-row { border-top: 1px dashed var(--line-2); }
.filter-label {
  flex-shrink: 0; width: 74px; padding-top: 5px;
  font-size: 10.5px; letter-spacing: .2em; color: var(--ink-4); text-transform: uppercase;
}
.chips { display: flex; flex-wrap: wrap; gap: 7px; flex: 1; }
.chip {
  padding: 5px 14px; border: 1px solid var(--line); border-radius: 100px;
  font-size: 12.5px; color: var(--ink-2); letter-spacing: .03em;
  transition: all .22s var(--ease); white-space: nowrap; background: #fff;
}
.chip:hover { border-color: var(--ink-3); color: var(--ink); }
.chip.on { background: var(--ink); border-color: var(--ink); color: #fff; }
.chip .n { opacity: .45; font-size: 11px; margin-left: 4px; }

.filter-bar-top {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  flex-wrap: wrap; margin-bottom: 18px;
}
.result-count { font-size: 12.5px; color: var(--ink-3); letter-spacing: .06em; }
.result-count b { color: var(--ink); font-weight: 500; }
.sort-select {
  border: 1px solid var(--line); background: #fff; padding: 7px 12px;
  font-size: 12.5px; color: var(--ink-2); border-radius: var(--radius); outline: none; cursor: pointer;
}
.btn-reset { font-size: 12.5px; color: var(--ink-3); text-decoration: underline; text-underline-offset: 3px; }
.btn-reset:hover { color: var(--ink); }

.inline-search {
  display: flex; align-items: center; gap: 10px; border: 1px solid var(--line);
  padding: 9px 16px; border-radius: 100px; min-width: 260px; background: #fff;
  transition: border-color .25s;
}
.inline-search:focus-within { border-color: var(--ink); }
.inline-search input { border: none; outline: none; background: none; flex: 1; font-size: 13.5px; }
.inline-search svg { width: 16px; height: 16px; stroke: var(--ink-3); fill: none; stroke-width: 1.6; }

/* ---------------- 瀑布流 ---------------- */

.masonry { column-count: 4; column-gap: var(--gap); }
@media (max-width: 1280px) { .masonry { column-count: 3; } }
@media (max-width: 860px)  { .masonry { column-count: 2; --gap: 16px; } }
@media (max-width: 520px)  { .masonry { column-count: 1; } }

.ph-card {
  break-inside: avoid; margin-bottom: var(--gap); cursor: zoom-in;
  position: relative; opacity: 0; transform: translateY(14px);
  animation: rise .6s var(--ease) forwards;
}
@keyframes rise { to { opacity: 1; transform: none; } }

.ph-card .box { position: relative; overflow: hidden; background: var(--bg-soft); }
.ph-card img { width: 100%; height: auto; display: block; transition: transform 1s var(--ease), opacity .5s; }
.ph-card:hover img { transform: scale(1.04); }
.ph-card .overlay {
  position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,.55), rgba(0,0,0,0) 55%);
  opacity: 0; transition: opacity .35s var(--ease); display: flex; align-items: flex-end; padding: 18px;
}
.ph-card:hover .overlay { opacity: 1; }
.ph-card .overlay .t { color: #fff; }
.ph-card .overlay .t h4 { margin: 0 0 6px; font-size: 14.5px; font-weight: 500; letter-spacing: .04em; }
.ph-card .overlay .t p { margin: 0; font-size: 11px; letter-spacing: .12em; opacity: .82; }
.ph-card .cap { padding: 11px 2px 0; }
.ph-card .cap h4 { margin: 0; font-size: 13.5px; font-weight: 450; letter-spacing: .03em;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ph-card .cap p { margin: 3px 0 0; font-size: 11px; color: var(--ink-4); letter-spacing: .1em; }

@media (hover: none) { .ph-card .overlay { display: none; } }

/* ---------------- 空状态 / 加载 ---------------- */

.empty { padding: 100px 20px; text-align: center; color: var(--ink-4); }
.empty svg { width: 42px; height: 42px; stroke: var(--ink-4); fill: none; stroke-width: 1; margin-bottom: 18px; }
.empty h3 { margin: 0 0 8px; font-size: 16px; font-weight: 400; color: var(--ink-2); letter-spacing: .05em; }
.empty p { margin: 0; font-size: 13px; }

.load-more { display: flex; justify-content: center; padding: 48px 0 16px; }
.load-more button {
  border: 1px solid var(--ink); padding: 12px 44px; font-size: 12px;
  letter-spacing: .22em; text-transform: uppercase; transition: all .3s var(--ease);
}
.load-more button:hover { background: var(--ink); color: #fff; }
.load-more button:disabled { opacity: .35; cursor: default; }

.skeleton { background: linear-gradient(90deg, #f4f2f0 25%, #eceae7 37%, #f4f2f0 63%);
  background-size: 400% 100%; animation: shimmer 1.4s infinite linear; }
@keyframes shimmer { 0% { background-position: 100% 0 } 100% { background-position: -100% 0 } }

/* ---------------- 灯箱 ---------------- */

.lightbox {
  position: fixed; inset: 0; z-index: 120; background: rgba(255,255,255,.985);
  display: none; flex-direction: column; animation: fadeIn .2s var(--ease);
}
.lightbox.open { display: flex; }
.lb-top {
  height: 62px; flex-shrink: 0; display: flex; align-items: center;
  justify-content: space-between; padding: 0 22px; border-bottom: 1px solid var(--line-2);
}
.lb-count { font-size: 11.5px; letter-spacing: .18em; color: var(--ink-3); }
.lb-stage { flex: 1; position: relative; display: grid; place-items: center; padding: 26px 84px; min-height: 0; }
.lb-stage img { max-width: 100%; max-height: 100%; object-fit: contain; box-shadow: 0 18px 60px rgba(0,0,0,.13); }
.lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 52px; height: 52px; display: grid; place-items: center; border-radius: 50%;
  background: rgba(255,255,255,.9); transition: all .22s;
}
.lb-nav:hover { background: var(--ink); }
.lb-nav:hover svg { stroke: #fff; }
.lb-nav svg { width: 22px; height: 22px; stroke: var(--ink); fill: none; stroke-width: 1.3; }
.lb-prev { left: 18px; } .lb-next { right: 18px; }
.lb-info { flex-shrink: 0; padding: 16px 26px 22px; border-top: 1px solid var(--line-2); text-align: center; }
.lb-info h3 { margin: 0 0 8px; font-size: 16px; font-weight: 450; letter-spacing: .05em; }
.lb-info .tags { display: flex; justify-content: center; flex-wrap: wrap; gap: 7px; margin-top: 10px; }
.lb-info .tags a {
  padding: 4px 12px; border: 1px solid var(--line); border-radius: 100px;
  font-size: 11.5px; color: var(--ink-3); transition: all .2s;
}
.lb-info .tags a:hover { border-color: var(--ink); color: var(--ink); }
.lb-info .desc { margin: 6px auto 0; max-width: 640px; font-size: 13px; color: var(--ink-3); }
@media (max-width: 700px) {
  .lb-stage { padding: 14px 12px; }
  .lb-nav { width: 42px; height: 42px; }
  .lb-prev { left: 6px; } .lb-next { right: 6px; }
}

/* ---------------- 联系浮窗 ---------------- */

.contact-fab { position: fixed; right: 26px; bottom: 26px; z-index: 100; display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.fab-items { display: flex; flex-direction: column; align-items: flex-end; gap: 10px;
  opacity: 0; transform: translateY(10px) scale(.96); pointer-events: none;
  transition: all .28s var(--ease); }
.contact-fab.open .fab-items { opacity: 1; transform: none; pointer-events: auto; }
.fab-item {
  display: flex; align-items: center; gap: 10px; background: #fff; color: var(--ink);
  border: 1px solid var(--line); padding: 9px 16px 9px 12px; border-radius: 100px;
  box-shadow: 0 6px 24px rgba(0,0,0,.07); font-size: 13px; white-space: nowrap;
  transition: all .22s var(--ease);
}
.fab-item:hover { border-color: var(--ink); transform: translateX(-2px); }
.fab-item svg { width: 17px; height: 17px; stroke: var(--ink-2); fill: none; stroke-width: 1.5; flex-shrink: 0; }
.fab-main {
  width: 54px; height: 54px; border-radius: 50%; background: var(--ink); color: #fff;
  display: grid; place-items: center; box-shadow: 0 10px 30px rgba(0,0,0,.2);
  transition: transform .3s var(--ease);
}
.fab-main:hover { transform: scale(1.06); }
.contact-fab.open .fab-main { transform: rotate(45deg); }
.fab-main svg { width: 23px; height: 23px; stroke: #fff; fill: none; stroke-width: 1.5; }
@media (max-width: 700px) { .contact-fab { right: 16px; bottom: 16px; } }

.modal-mask {
  position: fixed; inset: 0; z-index: 130; background: rgba(20,17,15,.42);
  display: none; place-items: center; padding: 24px; animation: fadeIn .2s var(--ease);
  backdrop-filter: blur(3px);
}
.modal-mask.open { display: grid; }
.qr-card { background: #fff; padding: 30px 34px; text-align: center; max-width: 340px; }
.qr-card img { width: 230px; height: 230px; object-fit: contain; margin: 0 auto 16px; }
.qr-card h3 { margin: 0 0 6px; font-size: 16px; font-weight: 500; letter-spacing: .06em; }
.qr-card p { margin: 0; font-size: 12.5px; color: var(--ink-3); }

/* ---------------- 页脚 ---------------- */

.footer { border-top: 1px solid var(--line); margin-top: 80px; padding: 52px 0 44px; background: var(--bg-soft); }
.footer-inner { max-width: var(--maxw); margin: 0 auto; padding: 0 40px;
  display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer h4 { margin: 0 0 14px; font-size: 10.5px; letter-spacing: .22em; color: var(--ink-4); text-transform: uppercase; font-weight: 500; }
.footer-col { min-width: 160px; }
.footer-col a, .footer-col p { display: block; margin: 0 0 9px; font-size: 13px; color: var(--ink-2); transition: color .2s; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom { max-width: var(--maxw); margin: 38px auto 0; padding: 20px 40px 0; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 11.5px; color: var(--ink-4); letter-spacing: .05em; }
@media (max-width: 700px) {
  .wrap, .wrap-narrow, .footer-inner, .footer-bottom { padding-left: 20px; padding-right: 20px; }
  .nav-inner { padding: 0 20px; }
}

/* ---------------- 自定义页面正文 ---------------- */

.page-head { padding: 76px 0 34px; border-bottom: 1px solid var(--line); margin-bottom: 44px; }
.page-head .kicker { font-size: 10.5px; letter-spacing: .24em; color: var(--ink-4); text-transform: uppercase; margin-bottom: 14px; }
.page-head h1 { margin: 0; font-size: clamp(26px, 3.6vw, 42px); font-weight: 300; letter-spacing: .05em; }
.page-body { font-size: 15px; line-height: 1.95; color: var(--ink-2); padding-bottom: 60px; }
.page-body h2 { font-size: 21px; font-weight: 500; color: var(--ink); letter-spacing: .05em; margin: 46px 0 16px; }
.page-body h3 { font-size: 16.5px; font-weight: 500; color: var(--ink); letter-spacing: .04em; margin: 34px 0 12px; }
.page-body p { margin: 0 0 18px; }
.page-body ul, .page-body ol { padding-left: 22px; margin: 0 0 20px; }
.page-body li { margin-bottom: 9px; }
.page-body img { margin: 26px 0; width: 100%; }
.page-body blockquote { margin: 26px 0; padding: 4px 0 4px 22px; border-left: 2px solid var(--ink);
  color: var(--ink); font-size: 16px; }
.page-body a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.page-body hr { border: none; border-top: 1px solid var(--line); margin: 40px 0; }
.page-body table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 14px; }
.page-body th, .page-body td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.page-body th { background: var(--bg-soft); font-weight: 500; }