/* ============================================================
   拾光 · SHIGUANG — 设计系统
   光与字 | Light & Words
   ============================================================ */

:root {
  /* —— 色彩 —— */
  --bg:            #F4EFE7;
  --bg-deep:       #ECE4D7;
  --surface:       #FBF8F3;
  --ink:           #1D1B16;
  --ink-soft:      #5C574D;
  --ink-faint:     #9A948A;
  --accent:        #C14E28;   /* 赤陶 */
  --accent-deep:   #93371A;
  --accent-soft:   rgba(193, 78, 40, 0.10);
  --gold:          #B9933F;
  --line:          rgba(29, 27, 22, 0.12);
  --line-strong:   rgba(29, 27, 22, 0.22);
  --shadow:        0 24px 60px -30px rgba(29, 27, 22, 0.35);
  --shadow-sm:     0 10px 30px -18px rgba(29, 27, 22, 0.28);

  /* —— 字体 —— */
  --serif:   "Playfair Display", "Noto Serif SC", "Songti SC", Georgia, serif;
  --sans:    "Inter", "Noto Sans SC", "PingFang SC", -apple-system, system-ui, sans-serif;
  --mono:    "SF Mono", "JetBrains Mono", ui-monospace, monospace;

  /* —— 节奏 —— */
  --gutter:   clamp(20px, 5vw, 72px);
  --maxw:     1280px;
  --radius:   4px;
  --radius-lg:14px;

  /* —— 动效 —— */
  --ease:     cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  letter-spacing: 0.01em;
}

::selection { background: var(--accent); color: #fff; }

/* 自定义滚动条 */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

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

/* —— 胶片颗粒质感 —— */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============================================================
   导航
   ============================================================ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 var(--gutter);
  transition: background .5s var(--ease), backdrop-filter .5s, box-shadow .5s;
}
.site-nav.scrolled {
  background: rgba(244, 239, 231, 0.82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  box-shadow: 0 1px 0 var(--line);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.logo .dot { color: var(--accent); }
.logo .logo-en {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.32em;
  color: var(--ink-faint);
  font-weight: 500;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 42px);
  list-style: none;
}
.nav-link {
  position: relative;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: 0.03em;
  padding: 6px 0;
  transition: color .3s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.nav-link:hover, .nav-link.active { color: var(--ink); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-link .idx {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--accent);
  margin-right: 5px;
  vertical-align: super;
}
.nav-cta {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--surface);
  background: var(--ink);
  padding: 10px 20px;
  border-radius: 100px;
  letter-spacing: 0.02em;
  transition: background .3s, transform .3s var(--ease);
}
.nav-cta:hover { background: var(--accent); transform: translateY(-1px); }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.menu-toggle span {
  width: 22px; height: 2px;
  background: var(--ink);
  transition: transform .35s var(--ease), opacity .3s;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   通用布局
   ============================================================ */
.page { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: clamp(72px, 11vw, 140px) 0; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: "";
  width: 34px; height: 1px;
  background: var(--accent);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: clamp(40px, 6vw, 72px);
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: 0.01em;
}
.section-title em { font-style: italic; color: var(--accent); }
.section-note {
  font-size: 0.94rem;
  color: var(--ink-soft);
  max-width: 340px;
  text-align: right;
}

/* —— 按钮 —— */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 15px 28px;
  border-radius: 100px;
  transition: all .4s var(--ease);
  position: relative;
  overflow: hidden;
}
.btn .arr { transition: transform .4s var(--ease); }
.btn:hover .arr { transform: translateX(5px); }
.btn-primary { background: var(--ink); color: var(--surface); }
.btn-primary:hover { background: var(--accent); }
.btn-ghost { border: 1px solid var(--line-strong); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* —— 滚动显现 —— */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
  will-change: opacity, transform;
}
.reveal.visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }

/* ============================================================
   首页 — Hero
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 140px 0 80px;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: center;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 28px;
}
.hero-kicker .pulse {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(193, 78, 40, 0.5);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(193,78,40,.45); }
  70% { box-shadow: 0 0 0 12px rgba(193,78,40,0); }
  100% { box-shadow: 0 0 0 0 rgba(193,78,40,0); }
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(3.4rem, 9vw, 7.2rem);
  line-height: 1.02;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.hero-title .line { display: block; overflow: hidden; }
.hero-title .line > span {
  display: block;
  transform: translateY(110%);
  animation: rise 1.1s var(--ease-out) forwards;
}
.hero-title .line:nth-child(2) > span { animation-delay: .12s; }
.hero-title .accent-word { color: var(--accent); font-style: italic; }
@keyframes rise { to { transform: translateY(0); } }
.hero-sub {
  margin-top: 30px;
  max-width: 46ch;
  font-size: 1.08rem;
  color: var(--ink-soft);
}
.hero-actions {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-visual {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transform: rotate(2deg);
}
.hero-visual .art {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 28% 22%, rgba(255,255,255,.35), transparent 42%),
    linear-gradient(155deg, #f5b56b 0%, #e06a4a 34%, #b04a67 66%, #2b2a4a 100%);
}
.hero-visual::after {
  content: "暮色 · 24°N";
  position: absolute;
  left: 22px; bottom: 20px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,.9);
}
.hero-visual .frame {
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(255,255,255,.5);
  border-radius: 9px;
  pointer-events: none;
}

.scroll-cue {
  position: absolute;
  left: var(--gutter);
  bottom: 34px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.scroll-cue .line {
  width: 1px; height: 44px;
  background: var(--line-strong);
  position: relative;
  overflow: hidden;
}
.scroll-cue .line::after {
  content: "";
  position: absolute;
  top: -100%; left: 0;
  width: 100%; height: 100%;
  background: var(--accent);
  animation: drop 2s var(--ease) infinite;
}
@keyframes drop { 0% { top: -100%; } 60% { top: 100%; } 100% { top: 100%; } }

/* —— 精选入口 —— */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(20px, 3vw, 40px);
}
.feature-card {
  position: relative;
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform .6s var(--ease), box-shadow .6s var(--ease);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.feature-card .thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.feature-card .thumb .art { width: 100%; height: 100%; transition: transform 1.2s var(--ease); }
.feature-card:hover .thumb .art { transform: scale(1.06); }
.feature-card .body {
  padding: clamp(22px, 3vw, 36px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.feature-card h3 {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 600;
}
.feature-card .desc { margin-top: 8px; color: var(--ink-soft); font-size: 0.94rem; }
.feature-card .go {
  width: 48px; height: 48px;
  flex: none;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: grid;
  place-items: center;
  transition: all .4s var(--ease);
}
.feature-card:hover .go { background: var(--accent); border-color: var(--accent); color: #fff; }
.feature-card .go svg { transition: transform .4s var(--ease); }
.feature-card:hover .go svg { transform: rotate(-45deg); }

/* —— 引言带 —— */
.quote-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: clamp(56px, 8vw, 96px) 0;
  text-align: center;
}
.quote-band blockquote {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3.6vw, 2.7rem);
  font-style: italic;
  font-weight: 400;
  line-height: 1.5;
  max-width: 26ch;
  margin: 0 auto;
  color: var(--ink);
}
.quote-band .cite {
  margin-top: 24px;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.24em;
  color: var(--ink-faint);
  text-transform: uppercase;
}

/* —— 迷你预览列表 —— */
.mini-list { display: flex; flex-direction: column; }
.mini-row {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  align-items: center;
  gap: clamp(18px, 3vw, 40px);
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  transition: padding .4s var(--ease);
}
.mini-row:first-child { border-top: 1px solid var(--line); }
.mini-row:hover { padding-left: 14px; }
.mini-row .no {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}
.mini-row h4 {
  font-family: var(--serif);
  font-size: clamp(1.15rem, 2.4vw, 1.7rem);
  font-weight: 600;
  transition: color .3s;
}
.mini-row:hover h4 { color: var(--accent); }
.mini-row .tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  border: 1px solid var(--line-strong);
  padding: 4px 12px;
  border-radius: 100px;
  white-space: nowrap;
}
.mini-row .meta { grid-column: 2; margin-top: -14px; color: var(--ink-faint); font-size: 0.82rem; }

/* ============================================================
   博客
   ============================================================ */
.page-head {
  padding: clamp(120px, 18vh, 180px) 0 clamp(32px, 5vw, 60px);
}
.page-head h1 {
  font-family: var(--serif);
  font-size: clamp(3rem, 8vw, 5.6rem);
  font-weight: 600;
  line-height: 1.05;
}
.page-head h1 em { color: var(--accent); font-style: italic; }
.page-head .lede {
  margin-top: 22px;
  max-width: 54ch;
  color: var(--ink-soft);
  font-size: 1.06rem;
}

.blog-list { display: flex; flex-direction: column; }
.post-card {
  display: grid;
  grid-template-columns: 150px 1fr auto;
  gap: clamp(22px, 4vw, 56px);
  align-items: center;
  padding: clamp(28px, 4vw, 48px) 0;
  border-top: 1px solid var(--line);
  transition: background .4s, padding .4s var(--ease);
}
.post-card:last-child { border-bottom: 1px solid var(--line); }
.post-card:hover { background: var(--surface); padding-left: 22px; }
.post-date {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  line-height: 1.5;
}
.post-date .yr { display: block; font-size: 1.6rem; color: var(--ink); font-weight: 600; letter-spacing: 0; }
.post-body h2 {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.8vw, 1.9rem);
  font-weight: 600;
  line-height: 1.3;
  transition: color .3s;
}
.post-card:hover h2 { color: var(--accent); }
.post-excerpt { margin-top: 10px; color: var(--ink-soft); max-width: 62ch; }
.post-meta { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  padding: 3px 11px;
}
.tag.accent { color: var(--accent); border-color: var(--accent); }
.read-time { font-size: 0.82rem; color: var(--ink-faint); }
.post-arrow {
  width: 46px; height: 46px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  display: grid; place-items: center;
  transition: all .4s var(--ease);
}
.post-card:hover .post-arrow { background: var(--accent); border-color: var(--accent); color: #fff; }
.post-arrow svg { transition: transform .4s var(--ease); }
.post-card:hover .post-arrow svg { transform: rotate(-45deg); }

/* ============================================================
   摄影作品集
   ============================================================ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(36px, 5vw, 56px);
}
.filter-btn {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  padding: 10px 18px;
  border-radius: 100px;
  border: 1px solid var(--line-strong);
  color: var(--ink-soft);
  transition: all .35s var(--ease);
}
.filter-btn:hover { border-color: var(--ink); color: var(--ink); }
.filter-btn.active { background: var(--ink); border-color: var(--ink); color: var(--surface); }

.gallery {
  column-count: 3;
  column-gap: clamp(16px, 2.4vw, 28px);
}
.photo-item {
  position: relative;
  break-inside: avoid;
  margin-bottom: clamp(16px, 2.4vw, 28px);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: zoom-in;
  transition: transform .6s var(--ease), box-shadow .6s var(--ease);
}
.photo-item:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.photo-item.hidden { display: none; }
.photo-art { position: relative; width: 100%; }
.photo-art::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 30%, rgba(255,255,255,.28), transparent 55%);
  pointer-events: none;
}
.photo-caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 46px 18px 16px;
  background: linear-gradient(transparent, rgba(10,8,6,.72));
  color: #fff;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.photo-item:hover .photo-caption { opacity: 1; transform: none; }
.photo-caption .t { font-family: var(--serif); font-size: 1.15rem; font-weight: 600; }
.photo-caption .c {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  opacity: .85;
  margin-top: 4px;
}

/* 每张「作品」的艺术渐变 */
.art-dusk    { background: linear-gradient(155deg, #ffb46b, #e06a4a 38%, #a54a6b 70%, #24223f); }
.art-mist    { background: linear-gradient(160deg, #d9e2e6, #9fb1bb 42%, #5a7180 82%, #35424d); }
.art-neon    { background: linear-gradient(150deg, #ff5f6d, #c86dd7 42%, #6a5cff 72%, #191038); }
.art-field   { background: linear-gradient(160deg, #fbe193, #e3a726 45%, #a76a12 82%); }
.art-sea     { background: linear-gradient(160deg, #49c0cf, #1f7a97 45%, #123c63 82%, #081f33); }
.art-sakura  { background: linear-gradient(160deg, #ffe0ec, #ff9ec6 45%, #f6efe6 88%); }
.art-desert  { background: linear-gradient(160deg, #24223f, #3a3a6b 42%, #4a3f6b 70%, #0e0e1e); }
.art-snow    { background: linear-gradient(160deg, #cfe8ff, #ffd9e8 45%, #ffffff 88%); }
.art-forest  { background: linear-gradient(160deg, #dff0d6, #76a878 45%, #2f5d3a 82%); }
.art-slice   { background: linear-gradient(135deg, #ff5f6d 0%, #ffc371 28%, #36d1dc 58%, #5b86e5 100%); }
.art-yantai  { background: linear-gradient(160deg, #b8dce6, #5a9db0 42%, #2a6d82 78%, #0e4a5a); }
.art-autumn  { background: linear-gradient(160deg, #f0c674, #c46e2a 45%, #9a3a1a 78%, #4a1a0a); }

/* —— 灯箱 —— */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(16, 14, 11, 0.92);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .4s var(--ease);
}
.lightbox.open { opacity: 1; pointer-events: auto; }
.lightbox-stage {
  position: relative;
  width: min(880px, 88vw);
}
.lightbox-stage .photo-art {
  border-radius: var(--radius-lg);
  box-shadow: 0 40px 100px -30px rgba(0,0,0,.7);
}
.lightbox-info {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-top: 22px;
  color: #fff;
}
.lightbox-info h3 { font-family: var(--serif); font-size: 1.5rem; font-weight: 600; }
.lightbox-info p { font-family: var(--mono); font-size: 0.72rem; letter-spacing: .16em; opacity: .65; margin-top: 4px; }
.lightbox-close {
  position: absolute;
  top: -56px; right: 0;
  width: 44px; height: 44px;
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 50%;
  color: #fff;
  display: grid; place-items: center;
  transition: all .3s;
}
.lightbox-close:hover { background: #fff; color: #111; transform: rotate(90deg); }
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px; height: 50px;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
  color: #fff;
  display: grid; place-items: center;
  font-size: 1.4rem;
  transition: background .3s;
}
.lightbox-nav:hover { background: var(--accent); }
.lightbox-nav.prev { left: -24px; }
.lightbox-nav.next { right: -24px; }

/* ============================================================
   游戏
   ============================================================ */
.game-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.game-aside h2 {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 600;
  line-height: 1.25;
}
.game-aside p { margin-top: 16px; color: var(--ink-soft); }
.game-rules { margin-top: 26px; padding-left: 0; list-style: none; }
.game-rules li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}
.game-rules li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.hud {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}
.hud-item {
  flex: 1;
  min-width: 120px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 20px;
  text-align: center;
}
.hud-item .k {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.hud-item .v {
  font-family: var(--serif);
  font-size: 1.9rem;
  font-weight: 600;
  margin-top: 2px;
  font-variant-numeric: tabular-nums;
}

.game-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(12px, 2vw, 18px);
  perspective: 1200px;
}
.card {
  aspect-ratio: 1;
  cursor: pointer;
  perspective: 800px;
  -webkit-tap-highlight-color: transparent;
}
.card-inner {
  position: relative;
  width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform .55s var(--ease-out);
}
.card.flipped .card-inner { transform: rotateY(180deg); }
.card-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-sm);
}
.card-front {
  background: var(--surface);
  border: 1px solid var(--line);
  transform: rotateY(180deg);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}
.card-back {
  background:
    radial-gradient(circle at 70% 24%, rgba(255,255,255,.16), transparent 46%),
    linear-gradient(150deg, var(--accent-deep), var(--accent) 60%, #e07a4a);
  color: #fff;
}
.card-back .mark {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 600;
  opacity: .9;
}
.card.matched { pointer-events: none; }
.card.matched .card-front {
  border-color: var(--gold);
  animation: matchPop .5s var(--ease);
}
@keyframes matchPop {
  0% { transform: rotateY(180deg) scale(1); }
  50% { transform: rotateY(180deg) scale(1.1); }
  100% { transform: rotateY(180deg) scale(1); }
}
.card.wrong .card-front { animation: shake .4s; }
@keyframes shake {
  0%,100% { transform: rotateY(180deg) translateX(0); }
  25% { transform: rotateY(180deg) translateX(-6px); }
  75% { transform: rotateY(180deg) translateX(6px); }
}

.game-actions { margin-top: 26px; display: flex; gap: 14px; }

.win-overlay {
  position: fixed;
  inset: 0;
  z-index: 2100;
  background: rgba(16,14,11,.7);
  backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .4s var(--ease);
}
.win-overlay.show { opacity: 1; pointer-events: auto; }
.win-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: clamp(32px, 5vw, 56px);
  text-align: center;
  max-width: 420px;
  width: 90%;
  transform: translateY(30px) scale(.96);
  transition: transform .5s var(--ease);
}
.win-overlay.show .win-card { transform: none; }
.win-card .trophy { font-size: 3rem; }
.win-card h3 {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 600;
  margin: 14px 0 6px;
}
.win-card .stats { color: var(--ink-soft); margin-bottom: 24px; }
.win-card .best { font-family: var(--mono); font-size: 0.74rem; letter-spacing: .1em; color: var(--accent); margin-bottom: 24px; }

canvas#confetti { position: fixed; inset: 0; pointer-events: none; z-index: 2200; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--line);
  padding: clamp(56px, 8vw, 96px) 0 48px;
  margin-top: clamp(40px, 6vw, 80px);
  background: var(--bg-deep);
}
.footer-inner { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}
.footer-wordmark {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  font-weight: 600;
  line-height: 1;
}
.footer-wordmark em { color: var(--accent); font-style: italic; }
.footer-col h5 {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 18px;
}
.footer-col a {
  display: block;
  color: var(--ink-soft);
  padding: 5px 0;
  font-size: 0.94rem;
  transition: color .3s, transform .3s;
}
.footer-col a:hover { color: var(--accent); transform: translateX(4px); }
.footer-bottom {
  margin-top: clamp(40px, 6vw, 64px);
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--ink-faint);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { max-width: 420px; margin: 0 auto; order: -1; }
  .feature-grid { grid-template-columns: 1fr; }
  .game-layout { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-wordmark { grid-column: 1 / -1; }
  .gallery { column-count: 2; }
}
@media (max-width: 640px) {
  .nav-links {
    position: fixed;
    top: 76px; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg);
    padding: 24px var(--gutter);
    gap: 20px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    transition: transform .45s var(--ease);
    align-items: flex-start;
  }
  .nav-links.open { transform: none; }
  .menu-toggle { display: flex; }
  .nav-cta { display: none; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .section-note { text-align: left; }
  .post-card { grid-template-columns: 1fr; gap: 12px; }
  .post-arrow { display: none; }
  .mini-row { grid-template-columns: 46px 1fr; }
  .mini-row .tag { display: none; }
  .gallery { column-count: 1; }
  .footer-top { grid-template-columns: 1fr; }
  .game-board { grid-template-columns: repeat(3, 1fr); }
  .hud-item .v { font-size: 1.5rem; }
}