/* ═════════════════════════════════════════════════════════════════
   HyperMarrow 智商藏不住 — 产品站暗色设计系统
   设计语言参考 OpenBear/memorybear（原创实现，未复用其素材）
   ═════════════════════════════════════════════════════════════════ */

:root{
  --bg:#050505;
  --bg-2:#0a0a0d;
  --surface:#141416;
  --surface-2:#171719;
  --surface-3:#1b1b1e;
  --border:rgba(255,255,255,.06);
  --border-strong:rgba(255,255,255,.12);
  --text:#fafafa;
  --text-2:#b4b4bd;
  --text-3:#8a8a93;
  --acc:#5a66ff;
  --acc-2:#3b82f6;
  --grad:linear-gradient(135deg,#5a66ff,#3b82f6);
  --glow:0 0 28px rgba(90,102,255,.35);
  --green:#22c55e;
  --red:#ef4444;
  --orange:#f59e0b;
  --radius:16px;
  --font:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'PingFang SC','Microsoft YaHei',sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
/* 分层背景：径向深蓝晕 + 顶部辉光 + 微噪点 */
.bg-fx{
  position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(1000px 620px at 50% -10%, rgba(64,90,220,.16), transparent 70%),
    radial-gradient(900px 500px at 100% 40%, rgba(59,130,246,.05), transparent 60%);
}
.bg-fx::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,.018), transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(255,255,255,.015), transparent 40%);
}
a{color:var(--acc-2);text-decoration:none}
.container{max-width:1140px;margin:0 auto;padding:0 24px}

/* ── 动态底图（参考 memorybear.ai 的循环视频底图） ─────────────────
   三层叠加：视频底纹 → 暗色压层（保正文可读性）→ 底部辉光。
   全 fixed 铺满视口，随页面滚动始终可见。                            */
.bg-video{
  position:fixed;inset:0;z-index:-3;pointer-events:none;
  width:100%;height:100%;object-fit:cover;
  opacity:.32;
  filter:saturate(1.15) contrast(1.05);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.35) 0%,rgba(0,0,0,.55) 45%,rgba(0,0,0,.95) 100%);
          mask-image:linear-gradient(180deg,rgba(0,0,0,.35) 0%,rgba(0,0,0,.55) 45%,rgba(0,0,0,.95) 100%);
}
/* 底部辉光：把视觉重心压到页面底部（footer / 二维码区），呼应参考站 */
.bg-glow{
  position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(720px 420px at 50% 108%, rgba(90,102,255,.26), transparent 68%),
    radial-gradient(560px 360px at 82% 104%, rgba(59,130,246,.14), transparent 70%),
    radial-gradient(480px 320px at 16% 104%, rgba(139,147,255,.12), transparent 70%);
  mix-blend-mode:screen;
}

/* ── 顶部导航 ────────────────────────────────────────────────── */
.nav{
  position:sticky;top:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;max-width:1140px;margin:0 auto;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(5,5,5,.65);border-bottom:1px solid var(--border);
}
.nav-brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.4px}
.nav-brand .logo{width:30px;height:30px;border-radius:8px;background:var(--grad);display:grid;place-items:center;font-size:17px;box-shadow:var(--glow)}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{color:var(--text-2);font-size:.9rem;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.btn-dl{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--grad);color:#fff;font-weight:700;
  padding:11px 24px;border-radius:30px;border:none;cursor:pointer;
  font-size:.95rem;transition:transform .2s,box-shadow .2s;
  box-shadow:0 4px 18px rgba(59,130,246,.3);
}
.btn-dl:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(90,102,255,.5)}
.btn.ghost{background:transparent;border:1px solid var(--border-strong);color:var(--text)}
@media(max-width:820px){.nav-links{display:none}.nav{padding:12px 16px}}

/* ── Hero ────────────────────────────────────────────────────── */
.hero{position:relative;text-align:center;padding:96px 24px 70px;overflow:hidden}
.hero-canvas{position:absolute;inset:0;z-index:-1;opacity:.55}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:30px;font-size:.82rem;
  border:1px solid var(--border-strong);background:var(--surface);
  color:var(--text-2);margin-bottom:26px;
}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green)}
.hero h1{
  font-size:clamp(2rem,4.6vw,3.5rem);line-height:1.18;font-weight:800;
  letter-spacing:.5px;
  background:linear-gradient(180deg,#fff,#c9cdf0);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero h1 .hl{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 22px rgba(90,102,255,.45));
}
.hero .lead{max-width:640px;margin:22px auto 0;color:var(--text-2);font-size:1.08rem}
.hero .motto{margin:26px auto 0;font-size:1.22rem;font-weight:700;color:#fff;letter-spacing:.6px}
.hero .cta{display:flex;gap:16px;justify-content:center;margin-top:34px;flex-wrap:wrap}
.hero .dl-info{color:var(--text-3);font-size:.82rem;margin-top:16px}
/* 统计条 */
.stats{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:52px}
.stat{
  flex:1;min-width:150px;max-width:210px;
  background:var(--surface);border:1px solid var(--border);
  border-radius:14px;padding:18px 14px;
}
.stat .num{font-size:1.7rem;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lbl{color:var(--text-3);font-size:.82rem;margin-top:2px}

/* ── 通用板块 ────────────────────────────────────────────────── */
section.block{padding:78px 0}
.section-title{text-align:center;font-size:clamp(1.5rem,2.8vw,2.1rem);font-weight:800;letter-spacing:.4px}
.section-title .gem{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.section-sub{text-align:center;color:var(--text-2);margin:14px auto 44px;max-width:640px;font-size:1rem}

/* ── Agent 滚屏 ──────────────────────────────────────────────── */
/* 图标条通栏：左右留白交给 mask 渐变负责，两侧淡出距离恒等，
   任何滚动相位下都不会出现"一边贴边、一边有白"的左对齐错觉。 */
.agents{text-align:center;padding:0 0 70px}
.agents .intro{color:var(--text-3);font-size:.85rem;margin-bottom:18px}
.agents-scroll{overflow:hidden;position:relative;width:100%;/* 14% 淡出区比 12% 更彻底：保证贴边的"半个图标"完全看不见，
   两侧对称性不再依赖当前滚动相位。 */
-webkit-mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent);mask-image:linear-gradient(90deg,transparent,#000 14%,#000 86%,transparent)}
.agents-track{display:flex;align-items:center;width:max-content;will-change:transform}
.agents-track img{width:52px;height:52px;border-radius:14px;object-fit:contain;background:var(--surface-2);padding:9px;margin:0 14px;flex-shrink:0;filter:grayscale(30%) brightness(1.1);transition:filter .3s,transform .3s;border:1px solid var(--border)}
.agents-track img:hover{filter:grayscale(0%);transform:translateY(-3px)}

/* ── 痛点雷达图 ─────────────────────────────────────────────── */
.radar-wrapper{display:grid;grid-template-columns:minmax(360px,1fr) minmax(260px,340px);gap:40px;align-items:center;max-width:1000px;margin:0 auto}
@media(max-width:900px){.radar-wrapper{grid-template-columns:1fr;gap:24px}}
.radar-svg{width:100%;max-width:560px;margin:0 auto;display:block;cursor:default}
.radar-svg .rm-ax{stroke:rgba(255,255,255,.12)}
.radar-svg .rm-grid{stroke:rgba(255,255,255,.05);fill:none}
.radar-svg .rm-spoke{stroke:rgba(255,255,255,.05)}
.radar-svg .rm-pain{fill:rgba(239,68,68,.14);stroke:#ef4444;stroke-width:1.6;stroke-opacity:.6}
.radar-svg .rm-cure{fill:rgba(90,102,255,.16);stroke:url(#rg);stroke-width:2;stroke-opacity:.9;animation:cureFill 1.6s ease}
.radar-svg .rm-pt{fill:#ef4444}
.radar-svg .rm-vt{fill:var(--acc-2)}
.radar-svg .rm-lbl{fill:var(--text-2);font-size:12px}
.radar-svg .rm-node{cursor:pointer;transition:all .15s}
.radar-svg .rm-node:hover .rm-pt{fill:#ff6b6b}
.radar-svg .rm-node:hover .rm-lbl{fill:#fff}
@keyframes cureFill{from{opacity:0}to{opacity:1}}
.radar-detail{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;min-height:240px;display:flex;flex-direction:column;
}
.radar-detail .rd-num{font-size:.8rem;color:var(--text-3);letter-spacing:.5px}
.radar-detail h4{font-size:1.15rem;margin:6px 0 10px;display:flex;gap:10px;align-items:center}
.radar-detail .rd-pain{color:var(--text-2);font-size:.92rem}
.radar-detail .rd-cure{margin-top:auto;padding-top:16px;border-top:1px solid var(--border);display:flex;gap:10px;align-items:flex-start}
.radar-detail .rd-cure .arrow{color:var(--green);font-weight:800}
.radar-detail .rd-cure b{color:#5fe397}
.radar-detail .rd-cure span{color:var(--text-2);font-size:.88rem}
.rd-placeholder{color:var(--text-3);font-size:.9rem;text-align:center;margin:auto}

/* ── 核心能力：大脑架构 ─────────────────────────────────────── */
.brain-wrap{max-width:1020px;margin:0 auto;position:relative}
.brain-svg{width:100%;display:block}
.brain-svg .bn-link{stroke:rgba(90,102,255,.3);stroke-width:1;fill:none}
.brain-svg .bn-link.lit{animation:linkflow 3s linear infinite;stroke-dasharray:4 6}
@keyframes linkflow{to{stroke-dashoffset:-20}}
.brain-svg .bn-core{filter:drop-shadow(0 0 26px rgba(90,102,255,.8));transform-origin:center;animation:brainpulse 3.4s ease-in-out infinite}
@keyframes brainpulse{0%,100%{transform:scale(1)}50%{transform:scale(1.045)}}
.brain-svg .bn-node{cursor:pointer}
.brain-svg .bn-ring{fill:rgba(90,102,255,.10);stroke:rgba(90,102,255,.35)}
.brain-svg .bn-ico{font-size:17px}
.brain-svg .bn-lbl{fill:var(--text-2);font-size:11.5px}
.brain-svg .bn-node:hover .bn-ring{fill:rgba(90,102,255,.28);stroke:#8b93ff}
.brain-svg .bn-node:hover .bn-lbl{fill:#fff;font-weight:700}
.brain-legend{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:8px}
.brain-legend .lv{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--text-2);padding:6px 14px;border:1px solid var(--border);border-radius:30px;background:var(--surface)}
.brain-legend .lv i{width:10px;height:10px;border-radius:50%;display:inline-block}
.brain-detail{max-width:560px;margin:22px auto 0;text-align:center;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;min-height:104px}
.brain-detail h5{font-size:1.05rem;display:flex;gap:10px;justify-content:center;align-items:center}
.brain-detail p{color:var(--text-2);font-size:.9rem;margin-top:6px}
.bd-hint{color:var(--text-3);font-size:.82rem}

/* ── 方案卡（补充能力） ─────────────────────────────────────── */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px;margin:30px 0}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-4px);border-color:var(--border-strong)}
.card .ic{font-size:1.5rem;margin-bottom:10px;filter:drop-shadow(0 0 10px rgba(90,102,255,.4))}
.card h4{font-size:1rem;margin-bottom:8px}
.card p{color:var(--text-2);font-size:.86rem;line-height:1.6}

/* ── 对比表（暗色） ─────────────────────────────────────────── */
.compare-table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);margin-bottom:36px}
.compare-table{border-collapse:collapse;width:100%;min-width:760px;font-size:.82rem}
.compare-table th,.compare-table td{padding:11px 12px;text-align:center;border-bottom:1px solid var(--border);vertical-align:middle;color:var(--text-2)}
.compare-table thead th{background:var(--surface-2);font-weight:700;color:var(--text);font-size:.84rem}
.compare-table td:first-child,.compare-table th:first-child{text-align:left;font-weight:600;white-space:nowrap;position:sticky;left:0;background:var(--surface);z-index:2;min-width:150px;color:var(--text)}
.compare-table tbody tr:hover td{background:rgba(255,255,255,.02)}
.compare-table tbody tr:hover td:first-child{background:var(--surface-2)}
.compare-table .hm-head{background:var(--grad)!important;color:#fff!important;font-weight:800}
.compare-table td.hm-col{background:rgba(90,102,255,.12);color:#9aa2ff;font-weight:700}
.compare-table tbody tr:hover td.hm-col{background:rgba(90,102,255,.2)}
.compare-table .yes{color:var(--green);font-weight:700}
.compare-table .no{color:var(--text-3)}
.compare-block h3{font-size:1.1rem;margin-bottom:4px}
.compare-block .sub{font-size:.82rem;color:var(--text-3);margin-bottom:12px;text-align:center}
.compare-note{font-size:.78rem;color:var(--text-3);margin-top:4px;text-align:center;line-height:1.7}

/* ── 定价 ───────────────────────────────────────────────────── */
.period-toggle{display:flex;gap:8px;justify-content:center;margin-bottom:34px;background:var(--surface);border:1px solid var(--border);border-radius:30px;padding:4px;width:max-content;margin-left:auto;margin-right:auto}
.period-btn{padding:9px 22px;border:none;border-radius:24px;cursor:pointer;font-size:.88rem;font-weight:600;background:transparent;color:var(--text-2);transition:all .2s}
.period-btn.act{background:var(--grad);color:#fff;box-shadow:0 2px 12px rgba(90,102,255,.4)}
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:820px){.pricing{grid-template-columns:1fr}}
.plan{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:32px 26px;text-align:center;transition:transform .3s,border-color .3s;position:relative}
.plan:hover{transform:translateY(-5px);border-color:var(--border-strong)}
.plan.popular{border:1px solid rgba(90,102,255,.5);background:linear-gradient(180deg,rgba(90,102,255,.10),var(--surface))}
.plan.popular::before{content:'最受欢迎';position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;padding:4px 16px;border-radius:20px;font-size:.78rem;font-weight:700;white-space:nowrap}
.plan h3{font-size:1.25rem;margin-bottom:8px}
.plan .price{font-size:2.4rem;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:4px}
.plan .price span{font-size:.85rem;color:var(--text-3);font-weight:400}
.plan ul{list-style:none;text-align:left;margin:18px 0}
.plan li{padding:7px 0;border-bottom:1px solid var(--border);font-size:.84rem;color:var(--text-2)}
.plan li:last-child{border-bottom:none}
.plan li::before{content:'✓';color:var(--green);margin-right:9px;font-weight:700}

/* ── FAQ ────────────────────────────────────────────────────── */
.faq{max-width:820px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--border);margin-bottom:12px;border-radius:12px;overflow:hidden}
.faq-item h4{padding:17px 22px;cursor:pointer;font-size:.93rem;display:flex;justify-content:space-between;align-items:center;user-select:none}
.faq-item h4 .chev{transition:transform .25s;color:var(--text-3)}
.faq-item.open h4 .chev{transform:rotate(180deg);color:var(--acc-2)}
.faq-item .faq-b{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-b{max-height:500px}
.faq-item .faq-b p{padding:0 22px 18px;color:var(--text-2);font-size:.88rem}

/* ── 下载/微信/页脚 ────────────────────────────────────────── */
.download-panel{text-align:center;max-width:640px;margin:20px auto 0}
.qr-wrap{text-align:center;margin:44px 0 10px}
.qr-wrap img{width:250px;height:250px;border-radius:14px;border:1px solid var(--border);background:#fff;padding:6px}
.qr-wrap .t{color:var(--text-3);font-size:.82rem;margin-top:8px}
.footer{
  position:relative;background:var(--bg-2);border-top:1px solid var(--border);
  padding:46px 20px;text-align:center;color:var(--text-3);font-size:.9rem;
  overflow:hidden;
}
/* footer 顶部描边渐隐线 + 底部辉光托底，与 .bg-glow 呼应 */
.footer::before{
  content:"";position:absolute;left:50%;top:0;transform:translateX(-50%);
  width:min(640px,80%);height:1px;
  background:linear-gradient(90deg,transparent,rgba(90,102,255,.6),transparent);
}
.footer::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:min(900px,110%);height:130%;pointer-events:none;
  background:radial-gradient(60% 70% at 50% 100%,rgba(90,102,255,.16),transparent 70%);
}
.footer a{color:var(--acc-2);position:relative;z-index:1}
.footer p{margin:6px 0;position:relative;z-index:1}

/* ── 滚动进入动画 + 通用 ────────────────────────────────────── */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.vis{opacity:1;transform:none}
.stagger>*{transition-delay:calc(var(--i,0)*.06s)}
hr.v{width:100%;border:none;border-top:1px solid var(--border);max-width:1140px;margin:0 auto}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#222;border-radius:8px}
::-webkit-scrollbar-track{background:transparent}
@media(prefers-reduced-motion:reduce){*{animation-duration:.001s!important;transition-duration:.001s!important}}

/* ── 算一笔账：痛点价值计算器（D6） ────────────────────────────── */
.calc-wrap{
  display:grid;grid-template-columns:1.1fr 1fr;gap:28px;
  max-width:1000px;margin:0 auto;align-items:stretch;
}
@media(max-width:900px){.calc-wrap{grid-template-columns:1fr}}
.calc-inputs{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;gap:22px;
}
.calc-q label{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  font-size:.92rem;color:var(--text-2);margin-bottom:10px;
}
.calc-q label b{
  color:var(--text);font-weight:800;font-size:1rem;white-space:nowrap;
  background:linear-gradient(135deg,#fff,#c9cdf0);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.calc-q .crange{
  width:100%;-webkit-appearance:none;appearance:none;height:6px;border-radius:6px;
  background:linear-gradient(90deg,var(--acc-2),var(--acc));outline:none;cursor:pointer;
}
.calc-q .crange::-webkit-slider-thumb{
  -webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;
  background:#fff;border:3px solid var(--acc);box-shadow:0 0 14px rgba(90,102,255,.6);cursor:grab;
}
.calc-q .crange::-moz-range-thumb{
  width:18px;height:18px;border-radius:50%;background:#fff;border:3px solid var(--acc);box-shadow:0 0 14px rgba(90,102,255,.6);cursor:grab;
}
.calc-out{
  background:linear-gradient(160deg,#151735,#1a1d33);
  border:1px solid rgba(90,102,255,.3);border-radius:var(--radius);
  padding:30px 28px;display:flex;flex-direction:column;justify-content:center;gap:16px;
}
.calc-big{text-align:center}
.calc-big .co-lbl{color:var(--text-3);font-size:.84rem;letter-spacing:.4px}
.calc-big .co-val{
  font-size:2.6rem;font-weight:800;line-height:1.15;margin-top:4px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.calc-big .co-val small{font-size:1.2rem;margin-left:6px;color:var(--text-3);-webkit-text-fill-color:var(--text-3)}
.co-mean{text-align:center;color:var(--text-2);font-size:.95rem}
.co-cta{margin:4px auto 0}
.co-foot{font-size:.72rem;color:var(--text-3);line-height:1.6;border-top:1px solid rgba(255,255,255,.08);padding-top:14px}

/* ── 创始用户计划（D6） ──────────────────────────────────────── */
.founder-cards{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;
  max-width:1000px;margin:0 auto;
}
.fcard{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 22px;text-align:center;transition:transform .25s,border-color .25s;
}
.fcard:hover{transform:translateY(-4px);border-color:rgba(90,102,255,.4)}
.fcard .fic{font-size:1.9rem;margin-bottom:12px;filter:drop-shadow(0 0 12px rgba(90,102,255,.45))}
.fcard h4{font-size:1.02rem;margin-bottom:8px}
.fcard p{color:var(--text-2);font-size:.86rem;line-height:1.65}
.founder-cta{
  text-align:center;margin:38px auto 0;max-width:1000px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:36px 24px;position:relative;overflow:hidden;
}
.founder-cta::before{
  content:"";position:absolute;left:50%;top:-60%;transform:translateX(-50%);
  width:560px;height:280px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(90,102,255,.25),transparent);pointer-events:none;
}
.founder-cta .fc-remain{color:#ffd28a;font-weight:700;font-size:.95rem;margin-bottom:18px}
.founder-cta .fc-note{color:var(--text-3);font-size:.78rem;margin-top:12px}