/* PluginFinder — landing v4（PC 优先）
 * 参考：moonshot.cn 的流动光场 / 模糊字漂移；deepseek.com/harness 的发布感。
 * 页面不展示产品截图：视觉只做氛围，入口留给工具库。
 */

:root {
  --bg: #000;
  --line: rgba(255,255,255,.09);
  --line-2: rgba(255,255,255,.16);
  --text: #f2f2f2;
  --text-2: #b6b8bd;
  --muted: #8a8f98;
  --muted-2: #5f636b;
  --accent: #8aa2ff;
  --shell: 1180px;
  --pad: clamp(24px, 4vw, 40px);
  --section: clamp(96px, 11vw, 160px);
  --ease: cubic-bezier(.22,.61,.36,1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0; background: var(--bg); color: var(--text); font-size: 16px; line-height: 1.6;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
h1,h2,h3,p,blockquote,ol,ul,figure { margin: 0; }
ol,ul { padding: 0; list-style: none; }

.shell { width: 100%; max-width: var(--shell); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }
.shell-narrow { max-width: 760px; }

/* 顶栏 */
.site-head { position: fixed; inset: 0 0 auto 0; z-index: 40; background: rgba(0,0,0,.4); -webkit-backdrop-filter: saturate(140%) blur(16px); backdrop-filter: saturate(140%) blur(16px); border-bottom: 1px solid transparent; transition: border-color 240ms var(--ease), background 240ms var(--ease); }
.site-head.scrolled { background: rgba(0,0,0,.78); border-bottom-color: var(--line); }
.head-inner { height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.wordmark { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 600; letter-spacing: -.01em; }
.mark { width: 16px; height: 16px; border-radius: 50%; background: #fff; box-shadow: 0 0 20px rgba(255,255,255,.5); position: relative; flex: none; }
.mark::after { content: ""; position: absolute; inset: 5px; border-radius: 50%; background: #000; }
.head-nav { display: flex; align-items: center; gap: 28px; font-size: 13px; color: var(--muted); }
.head-nav a { transition: color 200ms var(--ease); }
.head-nav a:hover { color: var(--text); }
.head-cta { height: 34px; display: inline-flex; align-items: center; gap: 6px; padding: 0 14px; border: 1px solid var(--line-2); border-radius: 999px; font-size: 13px; transition: border-color 200ms var(--ease), transform 200ms var(--ease); }
.head-cta:hover { border-color: rgba(255,255,255,.36); transform: translateY(-1px); }

/* 分段导航 */
.section-nav { position: fixed; right: 26px; top: 50%; transform: translateY(-50%); z-index: 35; display: flex; flex-direction: column; gap: 13px; }
.section-nav a { display: flex; align-items: center; justify-content: flex-end; gap: 10px; color: var(--muted); font-size: 11px; }
.section-nav i { order: 2; width: 5px; height: 5px; border-radius: 50%; border: 1px solid rgba(255,255,255,.26); transition: background 200ms var(--ease), border-color 200ms var(--ease), transform 200ms var(--ease); }
.section-nav span { order: 1; opacity: 0; transform: translateX(4px); transition: opacity 220ms var(--ease), transform 220ms var(--ease); }
.section-nav a:hover span, .section-nav a.active span { opacity: 1; transform: none; }
.section-nav a:hover i { border-color: var(--text); }
.section-nav a.active i { background: var(--accent); border-color: var(--accent); transform: scale(1.2); }
.section-nav a.section-nav-entry i { border-radius: 1px; transform: rotate(45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; padding: 150px 0 96px; overflow: hidden; background: #000; }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero-sphere { height: 230px; }
.hero-wordmark { position: absolute; left: 0; right: 0; top: 265px; transform: translateY(-50%); overflow: hidden; pointer-events: none; opacity: .22; filter: blur(26px); }
.hero-wordmark-track { display: flex; gap: 110px; white-space: nowrap; align-items: center; animation: drift 60s linear infinite; font-size: 220px; font-weight: 500; letter-spacing: -.05em; color: rgba(255,255,255,.85); text-shadow: 6px 0 rgba(255,60,120,.16), -6px 0 rgba(60,140,255,.18); }
@keyframes drift { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.hero-grain {
  position: absolute; inset: 0; pointer-events: none; opacity: .055; mix-blend-mode: screen;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
}
.hero-inner { position: relative; z-index: 3; text-align: center; display: flex; flex-direction: column; align-items: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; font-size: 11px; letter-spacing: .14em; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; margin-bottom: 46px; background: rgba(255,255,255,.02); }
.hero-badge::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.hero h1 {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -.045em;
  color: #f8f8f8;
  margin: 26px 0 18px;
}
.hero-sub { font-size: clamp(18px, 2.2vw, 26px); color: var(--muted); letter-spacing: -.01em; margin-bottom: 30px; }
.hero-desc { font-size: 15px; line-height: 1.9; color: var(--muted-2); margin-bottom: 42px; }
.ask { width: min(660px, 100%); display: flex; align-items: center; gap: 10px; background: rgba(255,255,255,.045); border: 1px solid rgba(255,255,255,.10); border-radius: 18px; padding: 8px 8px 8px 20px; -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); transition: border-color 220ms var(--ease), box-shadow 220ms var(--ease), background 220ms var(--ease); }
.ask:focus-within { border-color: rgba(255,255,255,.26); background: rgba(255,255,255,.06); box-shadow: 0 0 0 4px rgba(138,162,255,.08); }
.ask input { flex: 1; min-width: 0; height: 44px; border: 0; outline: 0; background: transparent; color: var(--text); font-size: 15px; }
.ask input::placeholder { color: var(--muted-2); }
.ask button { flex: none; width: 44px; height: 44px; border: 0; border-radius: 12px; cursor: pointer; background: rgba(255,255,255,.10); color: #fff; font-size: 18px; line-height: 1; transition: background 200ms var(--ease), transform 200ms var(--ease); }
.ask button:hover { background: rgba(255,255,255,.18); transform: translateY(-1px); }
.hero-actions { display: flex; gap: 12px; margin-top: 26px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 42px; padding: 0 22px; border-radius: 999px; font-size: 13.5px; font-weight: 500; transition: transform 200ms var(--ease), background 200ms var(--ease), border-color 200ms var(--ease); }
.btn:hover { transform: translateY(-1px); }
.btn-solid { background: #f2f2f2; color: #000; }
.btn-solid:hover { background: #fff; }
.btn-line { border: 1px solid var(--line-2); color: var(--text); }
.btn-line:hover { border-color: rgba(255,255,255,.34); }
.hero-meta { margin-top: 34px; font-size: 12px; color: var(--muted-2); letter-spacing: .02em; }

/* ---------- 通用分段 ---------- */
.section { padding: var(--section) 0; border-top: 1px solid var(--line); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto clamp(48px, 6vw, 80px); }
#why .section-head { max-width: 860px; }
.eyebrow { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin-bottom: 22px; }
.section h2 { font-size: clamp(30px, 4.2vw, 52px); font-weight: 400; line-height: 1.22; letter-spacing: -.035em; }
.section-sub { margin-top: 22px; font-size: 15px; line-height: 1.85; color: var(--muted); }
.stage-caption { text-align: center; font-size: 12px; color: var(--muted-2); letter-spacing: .02em; margin-top: 22px; }

/* 分区名（#zones 标题下一行小字） */
.zone-line { margin-top: 22px; font-size: 16px; letter-spacing: .1em; color: var(--muted); }

/* ---------- 入口 teaser（不剧透） ---------- */
.section-preview { padding-top: clamp(64px, 7vw, 96px); }
.teaser { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 14px; min-height: 380px; padding: 64px 32px; border: 1px solid var(--line); border-radius: 24px; overflow: hidden; background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.008)); transition: border-color 260ms var(--ease), transform 260ms var(--ease); }
.teaser:hover { border-color: rgba(255,255,255,.22); transform: translateY(-2px); }
.teaser-glow { position: absolute; inset: -30%; background: radial-gradient(42% 40% at 50% 42%, rgba(120,145,255,.28), transparent 70%); filter: blur(30px); pointer-events: none; }
.teaser-eyebrow { position: relative; font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted-2); }
.teaser-title { position: relative; font-size: clamp(30px, 4vw, 48px); font-weight: 400; letter-spacing: -.03em; }
.teaser-sub { position: relative; font-size: 14px; color: var(--muted); }
.teaser-cta { position: relative; margin-top: 16px; display: inline-flex; align-items: center; gap: 8px; height: 42px; padding: 0 22px; border-radius: 999px; background: #f2f2f2; color: #000; font-size: 13.5px; font-weight: 500; }

/* ---------- 规模 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.stat { background: #000; padding: 34px 24px; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.stat-num { font-size: clamp(26px, 3vw, 40px); font-weight: 300; letter-spacing: -.02em; line-height: 1; }
.stat-label { font-size: 12px; color: var(--muted); letter-spacing: .04em; }

/* ---------- 卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.cards-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.012)); border: 1px solid var(--line); border-radius: 16px; padding: 30px 28px; transition: border-color 220ms var(--ease), transform 220ms var(--ease); }
.card:hover { border-color: rgba(255,255,255,.2); transform: translateY(-2px); }
.card-index { display: block; font-size: 11px; color: var(--accent); letter-spacing: .12em; margin-bottom: 18px; }
.card h3 { font-size: 19px; font-weight: 500; letter-spacing: -.01em; margin-bottom: 12px; }
.card p { font-size: 14.5px; line-height: 1.85; color: var(--muted); }

/* ---------- 特性列表 ---------- */
.features { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.feature { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 24px; padding: 30px 0; border-bottom: 1px solid var(--line); align-items: start; }
.feature-num { font-size: 12px; color: var(--muted-2); letter-spacing: .1em; padding-top: 6px; }
.feature h3 { font-size: 20px; font-weight: 500; letter-spacing: -.01em; margin-bottom: 8px; }
.feature p { font-size: 14.5px; line-height: 1.85; color: var(--muted); max-width: 58ch; }

/* ---------- AI 对话演算 ---------- */
.chat { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 18px; }
.chat-row { display: flex; gap: 14px; align-items: flex-start; }
.chat-user { justify-content: flex-end; }
.chat-user p { order: 1; background: rgba(255,255,255,.06); border: 1px solid var(--line); border-radius: 16px 16px 4px 16px; padding: 14px 18px; font-size: 15px; color: var(--text); max-width: 70%; }
.chat-user .chat-avatar { order: 2; }
.chat-avatar { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; color: var(--muted); border: 1px solid var(--line); background: rgba(255,255,255,.03); }
.chat-avatar.glow { color: #000; background: #f2f2f2; border-color: #f2f2f2; box-shadow: 0 0 24px rgba(255,255,255,.28); font-weight: 600; }
.chat-ai > div { background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.015)); border: 1px solid var(--line); border-radius: 4px 16px 16px 16px; padding: 20px 22px; }
.chat-answer { font-size: 15px; color: var(--text-2); }
.chat-answer b { color: var(--text); font-weight: 600; }
.chat-note { margin-top: 10px; font-size: 12px; color: var(--muted-2); letter-spacing: .02em; }
.chat-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.chat-chips span { font-size: 12px; color: var(--text-2); border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; background: rgba(255,255,255,.02); }

/* ---------- 分区 ---------- */
.zones { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.zone { position: relative; display: flex; flex-direction: column; gap: 8px; background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.012)); border: 1px solid var(--line); border-radius: 16px; padding: 28px; transition: border-color 220ms var(--ease), transform 220ms var(--ease); }
.zone:first-child { grid-column: span 2; }
.zone:hover { border-color: rgba(255,255,255,.2); transform: translateY(-2px); }
.zone-index { font-size: 11px; color: var(--muted-2); letter-spacing: .12em; }
.zone h3 { font-size: 21px; font-weight: 500; letter-spacing: -.01em; }
.zone p { font-size: 14px; color: var(--muted); max-width: 46ch; }
.zone-count { position: absolute; right: 26px; top: 26px; font-size: 13px; color: var(--text-2); letter-spacing: .02em; }

/* ---------- 娱乐标签 ---------- */
.fun-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; max-width: 820px; margin: 0 auto; }
.fun-grid span { font-size: 14px; color: var(--text-2); border: 1px solid var(--line); border-radius: 999px; padding: 10px 20px; background: rgba(255,255,255,.02); transition: border-color 200ms var(--ease), color 200ms var(--ease); }
.fun-grid span:hover { border-color: rgba(255,255,255,.22); color: var(--text); }

/* ---------- 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.step { border: 1px solid var(--line); border-radius: 16px; padding: 28px; background: rgba(255,255,255,.015); }
.step-index { display: block; font-size: 11px; color: var(--accent); letter-spacing: .12em; margin-bottom: 18px; }
.step h3 { font-size: 18px; font-weight: 500; margin-bottom: 10px; }
.step p { font-size: 14px; line-height: 1.8; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq details { border-top: 1px solid var(--line); }
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 0; font-size: 16px; font-weight: 500; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 18px; font-weight: 300; color: var(--muted); transition: transform 200ms var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { font-size: 14.5px; line-height: 1.9; color: var(--muted); padding: 0 40px 24px 0; }

/* ---------- 关于 / 联系 ---------- */
.about-copy p { font-size: 15px; line-height: 2; color: var(--text-2); margin-bottom: 20px; }
.about-note { color: var(--muted-2) !important; font-size: 13px !important; }
.contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; margin-bottom: 40px; }
.contact-item { background: #000; padding: 24px; display: flex; flex-direction: column; gap: 10px; }
.contact-item span { font-size: 11px; letter-spacing: .12em; color: var(--muted-2); text-transform: uppercase; }
.contact-item p { font-size: 14px; color: var(--muted); }
.placeholder { color: var(--muted-2) !important; }
.contact-cta { text-align: center; }

/* ---------- 页脚 ---------- */
.site-foot { border-top: 1px solid var(--line); padding: clamp(56px, 7vw, 88px) 0 36px; }
.foot-inner { display: flex; flex-direction: column; align-items: center; gap: 18px; text-align: center; }
.foot-line { font-size: 12px; color: var(--muted-2); letter-spacing: .02em; }
.foot-cols { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 26px; margin-top: 8px; }
.foot-cols a { font-size: 13px; color: var(--muted); transition: color 200ms var(--ease); }
.foot-cols a:hover { color: var(--text); }
.foot-contact { display: flex; flex-wrap: wrap; justify-content: center; align-items: baseline; gap: 4px 34px; }
.foot-contact .contact-item { display: flex; align-items: baseline; gap: 8px; background: none; padding: 0; }
.foot-contact .contact-item span { font-size: 10px; letter-spacing: .1em; }
.foot-contact .contact-item p { font-size: 12px; }
.contact-link { color: inherit; text-decoration: none; transition: color 200ms var(--ease); }
.contact-link:hover { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
.foot-base { width: 100%; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); padding-top: 22px; margin-top: 26px; font-size: 12px; color: var(--muted-2); }

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(10px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式（PC 优先，移动端只保证不破版） ---------- */
@media (max-width: 1100px) { .section-nav { display: none; } }
@media (max-width: 960px) {
  .cards, .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .zones { grid-template-columns: minmax(0, 1fr); }
  .zone:first-child { grid-column: auto; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-wordmark-track { font-size: 110px; }
}
@media (max-width: 640px) {
  :root { --pad: 20px; --section: 84px; }
  .head-inner { height: 58px; }
  .head-nav { display: none; }
  .hero { padding-top: 108px; }
  .hero-wordmark-track { font-size: 72px; }
  .hero h1 { font-size: clamp(30px, 9.6vw, 38px); }
  .hero-sub { font-size: 16px; }
  .cards, .steps { grid-template-columns: minmax(0, 1fr); }
  .feature { grid-template-columns: 44px minmax(0, 1fr); gap: 12px; }
  .foot-base { flex-direction: column; align-items: center; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-wordmark-track { animation: none; }
  * { transition: none !important; }
}