@charset "utf-8";

/* negaFilmSci —— 站点样式
   配色沿用桌面版界面（深灰底 + 琥珀色强调），让网站和软件看起来是同一个东西。 */

:root {
  --bg: #161616;
  --bg-soft: #1b1b1b;
  --card: #212121;
  --card-hi: #282828;
  --line: #333333;
  --ink: #dcdcdc;
  --ink-strong: #f2f2f2;
  --muted: #8e8e8e;
  --accent: #c08a52;
  --accent-soft: #e0b98a;
  --primary: #7d5433;
  --primary-hi: #96683c;
  --ok: #8fbf6f;
  --radius: 12px;
  --max: 1120px;
  --font: "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei",
          system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", Consolas, "Menlo", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-soft); text-decoration: none; }
a:hover { color: var(--accent); }

img { max-width: 100%; display: block; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: rgba(22, 22, 22, .82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap {
  display: flex; align-items: center; gap: 16px;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--ink-strong); }
.brand img { width: 30px; height: 30px; border-radius: 7px; }
.brand small { color: var(--muted); font-weight: 400; font-size: 12px; }
.nav nav { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
.nav nav a {
  color: var(--muted); padding: 6px 10px; border-radius: 8px; font-size: 14px;
}
.nav nav a:hover { color: var(--ink-strong); background: var(--card-hi); }

/* ---------- 首屏 ---------- */
.hero { padding: 76px 0 40px; }
.hero h1 {
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.25; margin: 0 0 18px; color: var(--ink-strong);
  letter-spacing: .5px;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.lead { font-size: 17px; color: var(--muted); max-width: 46em; margin: 0 0 28px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 34px; }
.facts { display: flex; gap: 34px; flex-wrap: wrap; padding-top: 22px; border-top: 1px solid var(--line); }
.facts div strong { display: block; color: var(--ink-strong); font-size: 20px; font-weight: 600; }
.facts div span { color: var(--muted); font-size: 13px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent; border-radius: 10px;
  padding: 11px 20px; font-size: 15px; font-family: inherit;
  cursor: pointer; transition: background .15s, border-color .15s, color .15s;
  text-align: center;
}
.btn-primary { background: var(--primary); color: #f6ecdd; }
.btn-primary:hover { background: var(--primary-hi); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-soft); }
.btn-block { width: 100%; }
.btn[disabled], .btn.is-disabled {
  background: var(--card-hi); color: #6a6a6a; border-color: var(--line);
  cursor: not-allowed;
}

/* ---------- 区块标题 ---------- */
section { padding: 62px 0; }
section + section { border-top: 1px solid var(--line); }
.sec-head { margin-bottom: 28px; }
.sec-head h2 {
  font-size: 24px; margin: 0 0 6px; color: var(--ink-strong); letter-spacing: .3px;
}
.sec-head p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* ---------- 下载 ---------- */
.platforms { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.platform {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px 18px;
  display: flex; flex-direction: column; gap: 14px;
}
.platform.is-soon { opacity: .62; }
.platform h3 { margin: 0; font-size: 18px; color: var(--ink-strong); display: flex; align-items: center; gap: 8px; }
.platform .detail { margin: -6px 0 0; color: var(--muted); font-size: 13px; }
.platform .dl {
  border-top: 1px solid var(--line); padding-top: 14px;
  display: flex; flex-direction: column; gap: 8px;
}
.platform .dl .row { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.platform .dl .row strong { font-size: 14.5px; color: var(--ink-strong); font-weight: 600; }
.platform .dl .row span { font-size: 12.5px; color: var(--muted); }
.platform .dl p { margin: 0; font-size: 12.5px; color: var(--muted); }
.platform .dl p.note-line { margin: 2px 0 4px; line-height: 1.6; }
.platform .dl p.appeal {
  margin: 8px 0 4px; padding-left: 8px; line-height: 1.6;
  color: var(--accent-soft); border-left: 2px solid rgba(192, 138, 82, .45);
}
.badge {
  display: inline-block; font-size: 11.5px; padding: 2px 8px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--muted); vertical-align: middle;
}
.badge.soon { color: var(--accent); border-color: rgba(192, 138, 82, .45); }
.note { color: var(--muted); font-size: 13px; margin-top: 18px; }
.note code { font-family: var(--mono); font-size: 12.5px; color: var(--accent-soft); }

/* ---------- 样片对比滑块 ---------- */
.samples { display: flex; flex-direction: column; gap: 26px; }
.compare {
  --pos: 50%;
  position: relative; overflow: hidden;
  border-radius: var(--radius); border: 1px solid var(--line);
  background: #000; touch-action: pan-y;
  aspect-ratio: 3 / 2;
  cursor: ew-resize;
  user-select: none;
}
.compare img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; pointer-events: none;
}
.compare .after {
  clip-path: inset(0 0 0 var(--pos));   /* 右侧露出"处理后" */
}
.compare .handle {
  position: absolute; top: 0; bottom: 0; left: var(--pos);
  width: 2px; background: rgba(255, 255, 255, .9);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .45);
  pointer-events: none;
}
.compare .handle::after {
  content: "⇆";
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(20, 20, 20, .82); border: 1px solid rgba(255, 255, 255, .55);
  color: #fff; font-size: 17px; line-height: 38px; text-align: center;
}
.sample-meta {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  margin-top: 10px; color: var(--muted); font-size: 13px;
}
.sample-meta strong { color: var(--ink-strong); font-weight: 600; }
.slider-a11y {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- 原理 ---------- */
.steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.step {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px;
}
.step .n {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: 8px; margin-bottom: 10px;
  background: rgba(192, 138, 82, .14); color: var(--accent);
  font-family: var(--mono); font-size: 13px;
}
.step h3 { margin: 0 0 6px; font-size: 16px; color: var(--ink-strong); }
.step p { margin: 0; color: var(--muted); font-size: 14px; }
.step code {
  font-family: var(--mono); font-size: 12.5px; color: var(--accent-soft);
  background: rgba(192, 138, 82, .08); padding: 1px 5px; border-radius: 5px;
}
.compare-table { width: 100%; border-collapse: collapse; margin-top: 24px; font-size: 14px; }
.compare-table th, .compare-table td {
  border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top;
}
.compare-table th { background: var(--card); color: var(--ink-strong); font-weight: 600; }
.compare-table td:first-child { color: var(--muted); width: 22%; }
.compare-table td.yes { color: var(--ok); }

/* 支持清单：四列等宽，第一列也是正常正文（不是"比什么"那一列） */
.support-table { table-layout: fixed; }
.support-table th { width: 25%; }
.support-table td:first-child { color: var(--ink); width: auto; }
.support-table td { font-size: 13.5px; line-height: 1.95; }

/* ---------- 公告 ---------- */
.news { display: flex; flex-direction: column; gap: 14px; }
.news article {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px;
}
.news h3 { margin: 0 0 4px; font-size: 16px; color: var(--ink-strong); }
.news time { color: var(--muted); font-size: 12.5px; font-family: var(--mono); }
.news p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
/* 公告里的 <code> / 链接（由 main.js 的 rich() 还原） */
.news code {
  font-family: var(--mono); font-size: 12.5px; color: var(--accent-soft);
  background: rgba(192, 138, 82, .08); padding: 1px 5px; border-radius: 5px;
}
.news h3 code { font-size: 13px; }
.news a { color: var(--accent-soft); border-bottom: 1px solid rgba(192, 138, 82, .35); }

/* ---------- 公告 + 留言（同一区块，左右两栏） ---------- */
.community {
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 26px; align-items: start;
}
.community .col > h3 {
  margin: 0 0 12px; font-size: 15px; font-weight: 600;
  color: var(--accent); letter-spacing: .3px;
}
form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
form label { display: block; font-size: 13px; color: var(--muted); margin: 0 0 6px; }
form .field { margin-bottom: 14px; }
form input, form textarea {
  width: 100%; background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: 9px; color: var(--ink); font-family: inherit; font-size: 14px;
  padding: 10px 12px; resize: vertical;
}
form input:focus, form textarea:focus { outline: none; border-color: var(--accent); }
form .hint { font-size: 12.5px; color: var(--muted); margin: 10px 0 0; }
form .status { font-size: 13px; margin-top: 10px; min-height: 1.4em; }
form .status.ok { color: var(--ok); }
form .status.warn { color: var(--accent); }

/* ---------- 页脚 ---------- */
footer { border-top: 1px solid var(--line); padding: 34px 0 46px; color: var(--muted); font-size: 13px; }
footer .wrap { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; justify-content: space-between; }
footer .links { display: flex; gap: 16px; flex-wrap: wrap; }
footer .meta { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed; inset: 0; z-index: 60; display: none;
  background: rgba(0, 0, 0, .62); backdrop-filter: blur(3px);
  padding: 24px; overflow-y: auto;
}
.modal-mask.open { display: flex; align-items: center; justify-content: center; }
.modal {
  width: min(620px, 100%); background: var(--card); border: 1px solid var(--line);
  border-radius: 14px; padding: 22px 22px 18px;
  max-height: calc(100vh - 40px); overflow-y: auto;
}
.modal h3 { margin: 0 0 6px; font-size: 18px; color: var(--ink-strong); }
.modal p { color: var(--muted); font-size: 14px; margin: 0 0 12px; }
.modal ol { color: var(--muted); font-size: 14px; padding-left: 20px; margin: 0 0 16px; }
.modal .price { color: var(--accent-soft); font-size: 22px; font-weight: 600; }
.modal .actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 6px; }
.modal { position: relative; }
.modal-x {
  position: absolute; top: 8px; right: 10px;
  background: none; border: 0; color: var(--muted); font-size: 22px; line-height: 1;
  cursor: pointer; padding: 4px 9px; border-radius: 8px;
}
.modal-x:hover { color: var(--ink-strong); background: var(--card-hi); }
.modal h4 { margin: 0 0 6px; font-size: 14.5px; color: var(--accent-soft); }
.buy-step { border-top: 1px solid var(--line); margin-top: 16px; padding-top: 14px; }
.accent-text { color: var(--accent-soft) !important; }
#redeem-form {
  display: flex; gap: 8px; align-items: stretch;
  background: none; border: 0; padding: 0; margin: 0;
}
#redeem-form input {
  flex: 1 1 auto; min-width: 0;
  font-family: var(--mono); text-transform: uppercase; letter-spacing: .5px;
}
#redeem-form .btn { flex: 0 0 auto; }
#redeem-result { margin-top: 10px; }
a.is-disabled { opacity: .55; pointer-events: none; }

/* ---------- 窄屏 ---------- */
@media (max-width: 900px) {
  .platforms { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .community { grid-template-columns: 1fr; }
  .nav nav { display: none; }
  section { padding: 46px 0; }
  .hero { padding: 52px 0 30px; }
}