/* ===== 幽城幻劍錄 重光 · 官网样式 ===== */
:root {
  --bg-0: #070b14;
  --bg-1: #0b1220;
  --bg-2: #111a2e;
  --line: rgba(212, 168, 92, 0.18);
  --gold: #d4a85c;
  --gold-hi: #f0cd8a;
  --gold-dim: #9c7c45;
  --text: #e9e4d8;
  --text-dim: #a9a295;
  --accent: #b9553f;
  --font-cn: "Noto Serif SC", "Source Han Serif SC", "Source Han Serif CN", "STSong", "SimSun", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: radial-gradient(1200px 600px at 70% -10%, #16203a 0%, var(--bg-1) 55%, var(--bg-0) 100%);
  overflow-x: hidden;
  line-height: 1.7;
}
::selection { background: rgba(212, 168, 92, 0.35); }

/* 背景纹理层 */
.bg-tex {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: url("../assets/bg_texture.jpg");
  background-size: 900px auto;
  background-repeat: repeat;
  opacity: 0.05;
  pointer-events: none;
}

a { color: var(--gold); text-decoration: none; }
img { display: block; max-width: 100%; }

/* ===== 导航 ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.92) 0%, rgba(7, 11, 20, 0.55) 70%, transparent 100%);
  transition: background 0.3s, box-shadow 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(7, 11, 20, 0.94);
  box-shadow: 0 1px 0 var(--line);
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: flex; align-items: baseline; gap: 8px; }
.brand-cn {
  font-family: var(--font-cn);
  font-size: 22px;
  letter-spacing: 4px;
  color: var(--gold-hi);
  text-shadow: 0 0 18px rgba(212, 168, 92, 0.35);
}
.brand-sub {
  font-family: var(--font-cn);
  font-size: 13px;
  letter-spacing: 8px;
  color: var(--text-dim);
}
.menu { display: flex; gap: 26px; }
.menu a {
  color: var(--text-dim);
  font-size: 14px;
  letter-spacing: 2px;
  transition: color 0.25s;
}
.menu a:hover { color: var(--gold-hi); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 2px;
  font-size: 15px;
  letter-spacing: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s;
  white-space: nowrap;
}
.btn-gold {
  color: #171204;
  background: linear-gradient(135deg, var(--gold-hi), var(--gold) 55%, var(--gold-dim));
  border-color: rgba(255, 230, 170, 0.4);
  box-shadow: 0 4px 22px rgba(212, 168, 92, 0.28);
}
.btn-gold:hover { transform: translateY(-1px); box-shadow: 0 6px 28px rgba(212, 168, 92, 0.42); filter: brightness(1.06); }
.btn-ghost {
  color: var(--gold-hi);
  border-color: rgba(212, 168, 92, 0.45);
  background: rgba(212, 168, 92, 0.06);
}
.btn-ghost:hover { background: rgba(212, 168, 92, 0.14); transform: translateY(-1px); }
.btn-lg { padding: 14px 34px; font-size: 16px; }
.nav-cta { padding: 8px 16px; font-size: 14px; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 120px 24px 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("../assets/hero_banner.jpg");
  background-size: cover;
  background-position: center 78%;
  background-repeat: no-repeat;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(7, 11, 20, 0.55) 0%, rgba(7, 11, 20, 0.25) 40%, rgba(7, 11, 20, 0.92) 86%, var(--bg-0) 100%),
    radial-gradient(600px 320px at 50% 88%, rgba(212, 168, 92, 0.12) 0%, transparent 70%);
}
.hero-inner { position: relative; z-index: 2; max-width: 900px; }
.hero-tag {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 6px;
  color: var(--gold-dim);
  border: 1px solid var(--line);
  padding: 6px 18px;
  margin-bottom: 28px;
  background: rgba(7, 11, 20, 0.45);
}
.hero-title {
  font-family: var(--font-cn);
  font-weight: 600;
  line-height: 1.15;
  margin-bottom: 22px;
}
.hero-title .t1 {
  display: block;
  font-size: clamp(48px, 9vw, 104px);
  letter-spacing: 0.14em;
  background: linear-gradient(180deg, #ffe9b8 0%, var(--gold-hi) 38%, var(--gold) 70%, var(--gold-dim) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 42px rgba(212, 168, 92, 0.28);
  filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.6));
}
.hero-title .t2 {
  display: block;
  font-size: clamp(24px, 4vw, 44px);
  letter-spacing: 0.6em;
  margin-left: 0.6em;
  color: var(--text);
  opacity: 0.92;
}
.hero-sub {
  font-size: 16px;
  color: var(--text-dim);
  margin-bottom: 34px;
  letter-spacing: 1px;
}
.hero-sub code {
  font-family: Consolas, monospace;
  color: var(--gold-hi);
  background: rgba(212, 168, 92, 0.08);
  padding: 1px 6px;
  border-radius: 3px;
}
.hero-actions { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }
.hero-hint {
  margin-top: 26px;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--gold-dim);
}
.hero-scroll {
  position: absolute;
  bottom: 28px; left: 50%;
  width: 22px; height: 36px;
  margin-left: -11px;
  border: 1px solid rgba(212, 168, 92, 0.5);
  border-radius: 12px;
}
.hero-scroll::before {
  content: "";
  position: absolute;
  top: 6px; left: 50%;
  width: 4px; height: 8px;
  margin-left: -2px;
  background: var(--gold);
  border-radius: 2px;
  animation: scroll-dot 1.8s infinite;
}
@keyframes scroll-dot {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(14px); opacity: 0; }
  100% { opacity: 0; }
}

/* ===== 通用区块 ===== */
.sec { padding: 96px 24px; }
.sec-alt { background: linear-gradient(180deg, rgba(17, 26, 46, 0.55), rgba(7, 11, 20, 0.85)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-inner { max-width: 1200px; margin: 0 auto; }
.sec-title {
  font-family: var(--font-cn);
  font-size: 34px;
  letter-spacing: 6px;
  text-align: center;
  margin-bottom: 14px;
}
.sec-title em {
  font-style: normal;
  background: linear-gradient(180deg, var(--gold-hi), var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.sec-lead {
  text-align: center;
  color: var(--text-dim);
  letter-spacing: 2px;
  margin-bottom: 44px;
  font-size: 15px;
}

/* 卡片网格 */
.grid { display: grid; gap: 22px; }
.cards3 { grid-template-columns: repeat(3, 1fr); }
.cards6 { grid-template-columns: repeat(3, 1fr); }
.cards2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: linear-gradient(160deg, rgba(20, 30, 54, 0.9), rgba(11, 18, 32, 0.92));
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 28px 26px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 168, 92, 0.5);
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(212, 168, 92, 0.08);
}
.card h3 {
  font-family: var(--font-cn);
  font-size: 18px;
  letter-spacing: 2px;
  color: var(--gold-hi);
  margin-bottom: 10px;
}
.card p { font-size: 14px; color: var(--text-dim); }
.feat h3 { font-size: 16px; }

/* ===== 角色群像（月下图画廊） ===== */
.gallery {
  position: relative;
  overflow: hidden;
  padding: 120px 24px 110px;
}
.gallery-bg {
  position: absolute;
  inset: 0;
  background-image: url("../assets/bingli_moon.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.gallery-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, var(--bg-0) 0%, rgba(7, 11, 20, 0.42) 22%, rgba(7, 11, 20, 0.30) 50%, rgba(7, 11, 20, 0.55) 78%, var(--bg-0) 100%),
    radial-gradient(900px 520px at 30% 42%, rgba(7, 11, 20, 0.12) 0%, transparent 72%);
}
.gallery-inner { position: relative; z-index: 2; max-width: 1200px; margin: 0 auto; }
.gallery-head { margin-bottom: 52px; }
.gallery-eyebrow {
  text-align: center;
  font-size: 13px;
  letter-spacing: 8px;
  color: rgba(240, 205, 138, 0.85);
  margin-bottom: 10px;
  text-shadow: 0 0 16px rgba(212, 168, 92, 0.4);
}
.gallery-head .sec-title { margin-bottom: 12px; }
.gallery-head .sec-lead { margin-bottom: 0; }

/* 角色立绘：错落两排玻璃卡片 */
.chars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 34px;
}
.chars figure {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  background: linear-gradient(165deg, rgba(20, 30, 54, 0.55), rgba(8, 12, 22, 0.72));
  border: 1px solid rgba(212, 168, 92, 0.28);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transform: translateY(0);
  transition: transform 0.35s, border-color 0.35s, box-shadow 0.35s;
}
.chars figure:nth-child(5),
.chars figure:nth-child(6),
.chars figure:nth-child(7) {
  transform: translateY(18px);
}
.chars figure:hover {
  transform: translateY(-6px);
  border-color: rgba(240, 205, 138, 0.75);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.6), 0 0 24px rgba(212, 168, 92, 0.22), inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}
.chars figure:nth-child(5):hover,
.chars figure:nth-child(6):hover,
.chars figure:nth-child(7):hover {
  transform: translateY(12px);
}
.chars img {
  width: 100%;
  aspect-ratio: 560/616;
  object-fit: cover;
  display: block;
  filter: saturate(0.92) contrast(1.02);
  transition: transform 0.5s, filter 0.5s;
}
.chars figure:hover img { transform: scale(1.05); filter: saturate(1.08) contrast(1.04); }
.chars figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  text-align: center;
  font-family: var(--font-cn);
  font-size: 15px;
  letter-spacing: 5px;
  padding: 10px 0 12px;
  color: var(--gold-hi);
  background: linear-gradient(180deg, transparent, rgba(5, 7, 13, 0.88) 45%);
  text-shadow: 0 0 12px rgba(212, 168, 92, 0.5);
}

/* 表情横幅 */
.faces {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 16px;
}
.faces img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid rgba(212, 168, 92, 0.24);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  opacity: 0.92;
  transition: opacity 0.35s, transform 0.35s, border-color 0.35s;
}
.faces img:hover {
  opacity: 1;
  transform: translateY(-3px);
  border-color: rgba(240, 205, 138, 0.6);
}

/* ===== 开源 / 制作人 ===== */
.repo-actions { display: flex; gap: 12px; margin-top: 18px; flex-wrap: wrap; }
.repo p, .maker p { margin-bottom: 4px; }
.maker strong { color: var(--gold-hi); }

/* ===== 页脚 ===== */
.foot {
  border-top: 1px solid var(--line);
  background: rgba(4, 6, 12, 0.8);
  padding: 48px 24px 36px;
  text-align: center;
}
.foot-inner { max-width: 900px; margin: 0 auto; }
.foot-brand {
  font-family: var(--font-cn);
  font-size: 20px;
  letter-spacing: 6px;
  color: var(--gold-hi);
  margin-bottom: 14px;
}
.foot-brand span { font-size: 13px; letter-spacing: 2px; color: var(--text-dim); margin-left: 10px; }
.foot-legal { font-size: 12px; color: #777160; line-height: 1.9; margin-bottom: 12px; }
.foot-line { font-size: 13px; color: var(--text-dim); }
.foot-line a { color: var(--gold); }
.foot-line a:hover { text-decoration: underline; }

/* ===== 滚动显现动画 ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.on { opacity: 1; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .cards3, .cards6 { grid-template-columns: repeat(2, 1fr); }
  .chars { grid-template-columns: repeat(3, 1fr); }
  .chars figure:nth-child(7) { transform: translateY(18px); }
  .chars figure:nth-child(7):hover { transform: translateY(12px); }
  .faces { grid-template-columns: 1fr; }
  .gallery { padding: 96px 20px 90px; }
}
@media (max-width: 640px) {
  .cards3, .cards6, .cards2 { grid-template-columns: 1fr; }
  .chars { grid-template-columns: repeat(2, 1fr); }
  .chars figure:nth-child(5),
  .chars figure:nth-child(6),
  .chars figure:nth-child(7) { transform: translateY(0); }
  .chars figure:nth-child(5):hover,
  .chars figure:nth-child(6):hover,
  .chars figure:nth-child(7):hover { transform: translateY(-6px); }
  .menu { display: none; }
  .sec { padding: 72px 18px; }
  .nav-inner { padding: 12px 16px; }
  .hero { padding-top: 140px; }
}