/* ============================================================
   Extreal 官网样式 —— 深夜矿洞主题（Nether-Night）
   主色：草方块绿；对比色：附魔金。全站占位文案均为「棍母」。
   ============================================================ */

:root {
  --bg: #0a0d12;
  --bg-soft: #0e1219;
  --panel: #131926;
  --panel-2: #182034;
  --line: #2b3550;
  --line-soft: #1f2840;
  --text: #e9eef8;
  --muted: #939db5;
  --accent: #58c93a;
  --accent-deep: #2f8a1e;
  --accent-soft: rgba(88, 201, 58, 0.13);
  --gold: #f2b544;
  --gold-soft: rgba(242, 181, 68, 0.12);
  --danger: #e05555;
  --radius: 6px;
  /* 零外部字体：不引用 Google Fonts 等外链（国内网络下握手可达 12s 且属渲染阻塞资源），
     全部使用本地系统字体栈 */
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --mono: "Cascadia Mono", Consolas, "Courier New", "PingFang SC", "Microsoft YaHei", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-weight: 400;
  color: var(--text);
  background:
    radial-gradient(1100px 560px at 78% -12%, rgba(88, 201, 58, 0.09), transparent 55%),
    radial-gradient(860px 480px at -8% 32%, rgba(242, 181, 68, 0.06), transparent 55%),
    radial-gradient(700px 700px at 108% 88%, rgba(88, 201, 58, 0.05), transparent 60%),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(255, 255, 255, 0.016) 39px 40px),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(255, 255, 255, 0.016) 39px 40px),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
  min-height: 100vh;
}

.container { width: min(1140px, 92vw); margin: 0 auto; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
mark { background: var(--accent-soft); color: var(--accent); padding: 0 .35em; border-radius: 4px; }
code, kbd { font-family: var(--mono); font-size: .92em; background: var(--panel-2);
  border: 1px solid var(--line-soft); padding: .08em .45em; border-radius: 4px; }
.muted { color: var(--muted); }
.accent { color: var(--accent); }
.hidden { display: none !important; }

/* ---------------- 动效 ---------------- */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(26px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}
.anim { opacity: 0; animation: fadeSlideUp .6s cubic-bezier(.2,.7,.3,1) forwards; }
.anim.d1 { animation-delay: .08s; } .anim.d2 { animation-delay: .16s; }
.anim.d3 { animation-delay: .24s; } .anim.d4 { animation-delay: .32s; }
.anim.d5 { animation-delay: .40s; } .anim.d6 { animation-delay: .48s; }

/* ---------------- 导航 ---------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(10, 13, 18, 0.84);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { display: flex; gap: .55rem; align-items: center; font-weight: 700;
  font-size: 1.12rem; letter-spacing: .14em; color: var(--text); text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand .pick { color: var(--accent); font-size: 1.2em; }
.brand b { color: var(--accent); font-weight: 700; }
.nav-links { display: flex; gap: 1.5rem; }
.nav-links a { color: var(--muted); font-size: .93rem; padding: .32rem .1rem;
  border-bottom: 2px solid transparent; text-decoration: none; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links a.active { color: var(--accent); border-color: var(--accent); }
.nav-links a.disabled { opacity: .42; cursor: not-allowed; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; gap: .5em; cursor: pointer; font: inherit;
  border: 1px solid var(--line); background: var(--panel); color: var(--text);
  padding: .62rem 1.2rem; border-radius: var(--radius); transition: .16s ease;
  user-select: none; text-decoration: none;
}
.btn:hover { border-color: var(--accent); transform: translateY(-1px); text-decoration: none; }
.btn.primary {
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-deep) 100%);
  border-color: var(--accent-deep); color: #071307; font-weight: 700;
  box-shadow: 0 4px 0 #1d4d13, 0 10px 26px rgba(88, 201, 58, 0.22);
}
.btn.primary:hover { filter: brightness(1.07); }
.btn.primary:active { transform: translateY(2px); box-shadow: 0 2px 0 #1d4d13; }
.btn.ghost { background: transparent; }
.btn.big { font-size: 1.04rem; padding: .82rem 1.7rem; }
.btn.disabled, .btn:disabled { opacity: .5; pointer-events: none; cursor: wait; }

/* ---------------- 占位图块（棍母图片） ---------------- */
.ph-tile {
  position: relative; display: grid; place-items: center;
  border: 1px solid var(--line-soft); border-radius: var(--radius); overflow: hidden;
  background-color: var(--panel-2);
  background-image:
    linear-gradient(45deg, rgba(255,255,255,.05) 25%, transparent 25%, transparent 75%, rgba(255,255,255,.05) 75%),
    linear-gradient(45deg, rgba(255,255,255,.05) 25%, transparent 25%, transparent 75%, rgba(255,255,255,.05) 75%);
  background-size: 18px 18px; background-position: 0 0, 9px 9px;
}
.tile-text {
  font-family: var(--mono); color: var(--muted); letter-spacing: .28em; text-indent: .28em;
  writing-mode: horizontal-tb; white-space: nowrap;
}

/* ---------------- 首页 Hero（非对称双栏） ---------------- */
.hero { padding: 84px 0 64px; }
.hero-grid {
  display: grid; grid-template-columns: 1.25fr .9fr; gap: 3.4rem; align-items: center;
}
.badge {
  display: inline-block; border: 1px dashed var(--accent); color: var(--accent);
  background: var(--accent-soft); padding: .34rem .95rem; border-radius: 999px;
  font-family: var(--mono); font-size: .78rem; letter-spacing: .18em;
}
.hero-title {
  font-size: clamp(3.2rem, 9vw, 6.2rem); margin: .38em 0 .05em; letter-spacing: .06em;
  font-weight: 700; line-height: .95; color: #fff;
  text-shadow: 0 5px 0 rgba(0,0,0,.5), 0 0 52px rgba(88,201,58,.32);
}
.hero-title .thin { font-weight: 300; color: var(--gold); }
.hero-sub {
  max-width: 620px; margin: 1.1rem 0 2.2rem; color: var(--muted);
  font-size: 1.06rem; line-height: 2; font-weight: 300;
}
.hero-sub mark { font-weight: 500; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.meta-chips {
  list-style: none; display: flex; gap: .65rem; flex-wrap: wrap; padding: 0; margin-top: 2.5rem;
}
.meta-chips li {
  border: 1px solid var(--line); background: rgba(19,25,38,.7); color: var(--muted);
  font-family: var(--mono); font-size: .76rem; padding: .42rem .85rem; border-radius: 999px;
}
.meta-chips li b { color: var(--gold); font-weight: 500; }

/* Hero 右侧：材质包卡片预览（资源包抽屉样式） */
.pack-mock {
  border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
  background: var(--panel); box-shadow: 0 30px 60px rgba(0,0,0,.45);
  animation: floaty 7s ease-in-out infinite;
}
.pack-mock-head {
  display: flex; align-items: center; gap: .8rem; padding: .9rem 1.1rem;
  border-bottom: 1px solid var(--line-soft); background: var(--panel-2);
}
.pack-mock-head .dot { width: 10px; height: 10px; border-radius: 2px; background: var(--accent); }
.pack-mock-head span { font-family: var(--mono); font-size: .8rem; color: var(--muted); letter-spacing: .12em; }
.pack-mock-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding: 14px;
}
.pack-mock-grid .ph-tile { aspect-ratio: 1; }
.pack-mock-grid .tile-text { font-size: .66rem; }
.pack-mock-meta {
  display: flex; justify-content: space-between; padding: .7rem 1.1rem 1rem;
  font-family: var(--mono); font-size: .74rem; color: var(--muted);
}
.pack-mock-meta b { color: var(--accent); font-weight: 500; }

/* ---------------- 通用 Section ---------------- */
.section { padding: 60px 0; }
.section-head { margin-bottom: 1.8rem; }
.kicker {
  font-family: var(--mono); color: var(--gold); font-size: .78rem;
  letter-spacing: .3em; text-transform: uppercase; margin: 0 0 .6rem;
}
.section-title { font-size: clamp(1.7rem, 3.6vw, 2.4rem); margin: 0; font-weight: 700; }
.section-title .accent { font-weight: 300; }

/* ---------------- Bento 特性区（错落网格） ---------------- */
.bento {
  display: grid; gap: 14px;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: minmax(120px, auto);
}
.b-cell {
  position: relative; background: var(--panel); border: 1px solid var(--line-soft);
  border-radius: var(--radius); padding: 1.35rem; overflow: hidden;
  transition: border-color .18s ease, transform .18s ease;
}
.b-cell:hover { border-color: var(--accent); transform: translateY(-3px); }
.b-cell h3 { margin: .6rem 0 .55rem; font-size: 1.12rem; }
.b-cell p { margin: 0; color: var(--muted); font-size: .92rem; line-height: 1.85; font-weight: 300; }
.b-cell .tile-text { font-size: .95rem; }
.b-lg  { grid-column: span 4; grid-row: span 2; }
.b-md  { grid-column: span 2; }
.b-tall { grid-row: span 2; }
.b-flow { display: flex; flex-direction: column; gap: .55rem; margin-top: .9rem; }
.b-flow span {
  font-family: var(--mono); font-size: .8rem; color: var(--text);
  background: var(--panel-2); border: 1px solid var(--line-soft);
  border-left: 3px solid var(--accent); padding: .5rem .8rem; border-radius: 4px;
}
.b-cell .ph-tile { height: 92px; }
.b-stat { display: flex; flex-direction: column; justify-content: center; gap: .3rem; }
.b-stat b { font-size: 2rem; color: var(--accent); font-weight: 700; }
.b-stat span { color: var(--muted); font-size: .85rem; font-family: var(--mono); }

/* ---------------- 效果画廊 ---------------- */
.gallery-grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(4, 1fr);
}
.gallery-grid figure { margin: 0; }
.gallery-grid .ph-tile { aspect-ratio: 16 / 10; }
.gallery-grid .tile-text { font-size: 1rem; }
.gallery-grid figcaption {
  font-family: var(--mono); font-size: .74rem; color: var(--muted);
  padding: .5rem .1rem 0; letter-spacing: .08em;
}
.gallery-grid figure:nth-child(1) { grid-column: span 2; grid-row: span 2; }
.gallery-grid figure:nth-child(1) .ph-tile { aspect-ratio: auto; height: 100%; }
.gallery-grid figure:nth-child(1) .tile-text { font-size: 1.5rem; }

/* ---------------- 统计带 ---------------- */
.stats-band { border-block: 1px solid var(--line-soft); background: rgba(14,18,25,.75); padding: 42px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1.4rem; text-align: center; }
.stats-grid b { display: block; font-size: 1.95rem; color: var(--accent); font-weight: 700; }
.stats-grid span { color: var(--muted); font-size: .86rem; font-family: var(--mono); }

/* ---------------- 关于（杂志式） ---------------- */
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 3rem; align-items: start; }
.about-copy { color: var(--muted); line-height: 2.1; font-size: 1.02rem; font-weight: 300; }
.about-copy p { margin: 0 0 1.1rem; }
.about-copy mark { font-weight: 500; }
.facts { list-style: none; margin: 0; padding: 0; border: 1px dashed var(--line); border-radius: var(--radius); }
.facts li {
  display: flex; justify-content: space-between; gap: 1rem; padding: .85rem 1.1rem;
  border-bottom: 1px dashed var(--line-soft); font-size: .9rem;
}
.facts li:last-child { border-bottom: 0; }
.facts .k { color: var(--muted); font-family: var(--mono); font-size: .78rem; letter-spacing: .08em; }
.facts .v { color: var(--gold); }

/* ---------------- 页脚 ---------------- */
.footer { border-top: 1px solid var(--line-soft); padding: 34px 0 46px; color: var(--muted);
  font-size: .88rem; text-align: center; line-height: 2; }

/* ============================================================
   安装页（快速安装 · 活字印刷）
   ============================================================ */
.install-head { padding: 48px 0 4px; }
.install-head h1 { font-size: clamp(1.9rem, 4.4vw, 2.7rem); margin: 0 0 .7rem; font-weight: 700; }
.install-head h1 .accent { font-weight: 300; }
.install-head .lead { color: var(--muted); line-height: 2; max-width: 880px; margin: 0 0 1.6rem; font-weight: 300; }
.flow-steps {
  list-style: none; display: grid; gap: .7rem; padding: 0; margin: 0 0 2.2rem;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}
.flow-steps li {
  border: 1px dashed var(--line); border-radius: var(--radius); padding: .65rem .85rem;
  color: var(--muted); font-size: .87rem; background: rgba(14,18,25,.7); text-align: center;
}
.flow-steps b { color: var(--accent); display: block; margin-bottom: .25rem;
  font-family: var(--mono); font-weight: 500; letter-spacing: .1em; }

/* 工具条：搜索（一级分类已改为嵌套折叠分组，不再用独立下拉） */
.toolbar { display: flex; gap: .9rem; align-items: center; flex-wrap: wrap; margin: 0 0 10px; }
.toolbar .hint { font-family: var(--mono); font-size: .74rem; color: var(--muted); letter-spacing: .1em; }
.caret { display: inline-block; transition: transform .16s ease; color: var(--muted); font-size: .8em; }
.search-input {
  flex: 1; min-width: 210px; background: var(--panel); border: 1px solid var(--line);
  color: var(--text); padding: .62rem .95rem; border-radius: var(--radius); font: inherit;
}
.search-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

/* 一级分组：包含住二级分类的嵌套折叠面板 */
.group {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-soft); overflow: hidden;
}
.group-head { display: flex; align-items: center; gap: .9rem; padding: .95rem 1.15rem; }
.group-title {
  display: flex; align-items: center; gap: .6rem; cursor: pointer; padding: 0;
  background: none; border: 0; color: var(--text); font: inherit; font-weight: 700; font-size: 1.05rem;
}
.group:not(.open) .group-title .caret { transform: rotate(-90deg); }
.group-title .caret { font-size: .7em; }
.group-tag {
  font-family: var(--mono); font-size: .64rem; font-weight: 400; color: var(--gold);
  border: 1px dashed var(--gold); border-radius: 999px; padding: .12rem .55rem;
}
.group-badge {
  font-family: var(--mono); font-size: .76rem; color: var(--muted);
  border: 1px solid var(--line-soft); border-radius: 999px; padding: .2rem .65rem;
}
.group-badge.has { color: var(--accent); border-color: var(--accent-deep); background: var(--accent-soft); }
.group-body { display: none; padding: 10px 14px 16px; border-top: 1px solid var(--line-soft); }
.group.open .group-body { display: block; }

/* Mod 分区标签（一级「Mod 方块」内部的划分） */
.mod-block + .mod-block { margin-top: 16px; }
.mod-label {
  display: flex; align-items: center; gap: .6rem; margin: 2px 0 10px;
  font-weight: 600; color: var(--text);
}
.mod-tag {
  font-family: var(--mono); font-size: .62rem; letter-spacing: .18em; color: var(--accent);
  border: 1px solid var(--accent-deep); background: var(--accent-soft);
  padding: .16rem .5rem; border-radius: 4px;
}
.mod-badge { font-family: var(--mono); font-size: .72rem; font-weight: 400; color: var(--muted); }
.mod-badge.has { color: var(--accent); }
.group .cat { background: var(--panel); }

/* 二级分类（嵌套在一级分组内的折叠面板） */
.categories { display: grid; gap: 14px; }
.cat { border: 1px solid var(--line-soft); border-radius: var(--radius);
  background: var(--bg-soft); overflow: hidden; }
.cat-head { display: flex; align-items: center; gap: .9rem; padding: .82rem 1.05rem; }
.cat-title { font-weight: 600; display: flex; gap: .55rem; align-items: center;
  background: none; border: 0; color: var(--text); font: inherit; cursor: pointer; padding: 0; }
.cat:not(.open) .cat-title .caret { transform: rotate(-90deg); }
.cat-badge {
  font-family: var(--mono); font-size: .74rem; color: var(--muted);
  border: 1px solid var(--line-soft); border-radius: 999px; padding: .18rem .6rem;
}
.cat-badge.has { color: var(--accent); border-color: var(--accent-deep); background: var(--accent-soft); }
.cat-all {
  margin-left: auto; cursor: pointer; font: inherit; font-size: .78rem; color: var(--muted);
  background: none; border: 1px dashed var(--line); border-radius: 999px; padding: .26rem .75rem;
}
.cat-all:hover { color: var(--accent); border-color: var(--accent); }
.cat-body { display: none; padding: 4px 14px 16px; }
.cat.open .cat-body { display: block; }

/* 方块平铺卡片 */
.block-grid { display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); }
.block-card {
  position: relative; display: grid; gap: .45rem; justify-items: center;
  padding: .6rem .4rem .55rem; background: var(--panel); border: 1px solid var(--line-soft);
  border-radius: var(--radius); cursor: pointer; transition: .13s ease; font: inherit; color: var(--text);
}
.block-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.block-card .tile { width: 100%; aspect-ratio: 1; border-radius: 4px; }
.block-card .tile-text { font-size: .58rem; letter-spacing: .22em; text-indent: .22em; }
.block-card .block-name { font-size: .78rem; color: var(--muted); text-align: center; line-height: 1.35; }
.block-card .check {
  position: absolute; top: 6px; right: 6px; width: 20px; height: 20px;
  display: grid; place-items: center; border-radius: 4px; background: var(--accent);
  color: #062406; font-size: .8rem; font-weight: 700; opacity: 0; transform: scale(.5); transition: .13s ease;
}
.block-card.selected { border-color: var(--accent);
  background: linear-gradient(180deg, rgba(88,201,58,.10), var(--panel) 70%); }
.block-card.selected .check { opacity: 1; transform: scale(1); }
.block-card.selected .block-name { color: var(--text); }
.cat-empty { color: var(--muted); font-size: .85rem; padding: 1rem .2rem; font-family: var(--mono); }

/* 底部粘性操作条 */
.bottom-bar {
  position: sticky; bottom: 14px; z-index: 40; margin-top: 24px;
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  background: rgba(19, 25, 38, .93); border: 1px solid var(--line); border-radius: var(--radius);
  padding: .85rem 1.15rem; backdrop-filter: blur(10px);
  box-shadow: 0 16px 40px rgba(0,0,0,.45);
}
.sel-info { font-size: .95rem; color: var(--muted); }
.sel-info b { color: var(--accent); font-size: 1.25rem; font-weight: 700; margin-right: .15em; }
.bar-actions { margin-left: auto; display: flex; gap: .7rem; flex-wrap: wrap; }
.status-line { min-height: 1.7em; color: var(--muted); font-size: .88rem; margin: 14px 2px 44px;
  font-family: var(--mono); }
.status-line.ok { color: var(--accent); }
.status-line.err { color: var(--danger); }

/* Toast 提示 */
.toasts { position: fixed; right: 18px; bottom: 18px; z-index: 100; display: grid; gap: 8px; }
.toast {
  background: var(--panel-2); border: 1px solid var(--accent); color: var(--text);
  padding: .72rem 1.1rem; border-radius: var(--radius); box-shadow: 0 12px 30px rgba(0,0,0,.5);
  animation: fadeSlideUp .18s ease; font-size: .9rem; max-width: 340px;
}
.toast.err { border-color: var(--danger); }

.error-box {
  border: 1px dashed var(--danger); color: var(--danger); border-radius: var(--radius);
  padding: 1rem 1.2rem; font-family: var(--mono); font-size: .85rem; line-height: 1.9;
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.4rem; }
  .pack-mock { max-width: 460px; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .b-lg, .b-md { grid-column: span 2; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid figure:nth-child(1) { grid-column: span 2; }
  .about-grid { grid-template-columns: 1fr; gap: 1.6rem; }
  .nav-links { gap: .9rem; }
}
@media (max-width: 560px) {
  .bento { grid-template-columns: 1fr; }
  .b-lg, .b-md { grid-column: span 1; }
  .bottom-bar { position: static; }
  .bar-actions { margin-left: 0; width: 100%; }
  .bar-actions .btn { flex: 1; justify-content: center; }
}