/* ===== 知行 v5 · 共享设计系统 ===== */
:root{
  --purple-lightest:#EDE9FE; --purple-light:#C4B5FD; --purple-bright:#8B5CF6;
  --purple-mid:#4C2BB4; --purple-deep:#1D206A;
  --ink:#15151E; --gray:#5B6472; --gray-soft:#8A91A0;
  --white:#fff; --bg-soft:#FAFAFE; --line:rgba(29,32,106,.08);
  --r:16px; --r-lg:22px; --r-xl:28px;
  --font-title:"Noto Serif SC","Source Han Serif SC","STSong","Songti SC","SimSun",serif;
  --font-body:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font:var(--font-body);
  --shadow:0 18px 50px rgba(29,32,106,.10);
  --grad:linear-gradient(100deg,#7C3AED 0%,#C13DD6 100%);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
body{font-family:var(--font);color:var(--ink);background:var(--white);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;}
a{text-decoration:none;color:inherit;}

/* ── Nav ── */
.nav{position:fixed;top:0;left:0;right:0;z-index:200;height:64px;
  background:rgba(255,255,255,.82);-webkit-backdrop-filter:saturate(180%) blur(18px);backdrop-filter:saturate(180%) blur(18px);
  border-bottom:1px solid var(--line);}
.nav-inner{max-width:1200px;height:100%;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:20px;letter-spacing:.5px;color:var(--purple-deep);}
.logo .mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--purple-bright),var(--purple-mid));display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:800;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{font-size:17px;font-weight:700;color:#2a2f3c;transition:color .15s;position:relative;}
.nav-links a:hover{color:var(--purple-mid);}
.nav-links a.active{color:var(--purple-mid);}
.nav-links a.active::after{content:'';position:absolute;left:0;right:0;bottom:-21px;height:2px;background:var(--purple-mid);border-radius:2px;}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-cta{background:var(--grad);color:#fff;font-size:15px;font-weight:800;padding:10px 20px;border-radius:22px;transition:transform .2s,box-shadow .2s;box-shadow:0 4px 14px rgba(124,58,237,.28);}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(29,32,106,.26);}
.nav-burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;}
.nav-burger span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:.25s;}
.mobile-menu{display:none;position:fixed;top:64px;left:0;right:0;z-index:199;background:#fff;border-bottom:1px solid var(--line);padding:10px 24px 18px;flex-direction:column;gap:2px;box-shadow:0 14px 30px rgba(29,32,106,.08);}
.mobile-menu.open{display:flex;}
.mobile-menu a{padding:13px 8px;font-size:16px;font-weight:600;border-radius:10px;}
.mobile-menu a:hover{background:var(--purple-lightest);color:var(--purple-mid);}

/* ── Hero (首页) ── */
.hero{position:relative;overflow:hidden;padding:128px 24px 90px;
  background:linear-gradient(180deg,#F4F1FF 0%,#EDE9FE 22%,#F7F6FD 55%,#fff 100%);}
.hero::before{content:'';position:absolute;top:-160px;left:50%;transform:translateX(-50%);
  width:640px;height:440px;border-radius:50%;pointer-events:none;
  background:radial-gradient(closest-side,rgba(139,92,246,.26),rgba(193,61,214,.10) 55%,transparent 78%);filter:blur(10px);display:block;}
.hero-inner{position:relative;z-index:1;max-width:1200px;margin:0 auto;display:grid;grid-template-columns:.9fr 1.1fr;gap:54px;align-items:center;}
.hero-news{display:inline-flex;align-items:center;gap:12px;margin-bottom:24px;color:var(--purple-mid);font-size:14px;font-weight:800;background:rgba(255,255,255,.7);border:1px solid rgba(139,92,246,.2);padding:8px 16px;border-radius:22px;}
.hero-news span{color:var(--purple-bright);}
.badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.5px;color:var(--purple-mid);
  background:rgba(255,255,255,.7);border:1px solid rgba(139,92,246,.2);padding:7px 16px;border-radius:20px;margin-bottom:24px;}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--purple-bright);}
.hero h1{font-family:var(--font-title);font-size:62px;line-height:1.12;font-weight:700;letter-spacing:0;color:var(--purple-deep);margin-bottom:26px;}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;}
.hero-sub{font-size:18px;color:var(--gray);max-width:520px;margin-bottom:34px;line-height:1.85;}
.hero-sub strong{color:var(--ink);font-weight:800;}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:26px;font-size:15px;font-weight:800;transition:transform .2s,box-shadow .2s,border-color .2s,background .2s;cursor:pointer;}
.btn-primary{background:var(--purple-deep);color:#fff;box-shadow:0 6px 18px rgba(29,32,106,.2);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(29,32,106,.3);}
.btn-ghost{background:#fff;color:var(--purple-deep);border:1.5px solid rgba(29,32,106,.14);}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--purple-mid);}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(124,58,237,.3);}
.btn-grad:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(124,58,237,.42);}
.hero-media{position:relative;margin:0;border-radius:var(--r-xl);overflow:hidden;background:#DDE2EA;box-shadow:var(--shadow);}
.hero-media img{display:block;width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-media figcaption{position:absolute;left:22px;right:22px;bottom:22px;display:flex;align-items:flex-end;justify-content:space-between;gap:18px;padding:18px 20px;background:rgba(255,255,255,.92);border:1px solid rgba(139,92,246,.14);border-radius:var(--r);box-shadow:0 14px 34px rgba(29,32,106,.14);}
.hero-media strong{font-family:var(--font-title);font-size:20px;font-weight:700;color:var(--purple-deep);white-space:nowrap;}
.hero-media span{font-size:15px;line-height:1.6;color:var(--gray);max-width:360px;}

/* ── Page Hero (子页) ── */
.page-hero{position:relative;overflow:hidden;padding:128px 24px 60px;text-align:center;
  background:linear-gradient(180deg,#F4F1FF 0%,#F1ECFD 40%,#F9F8FE 75%,#fff 100%);}
.page-hero::before{content:'';position:absolute;top:-180px;left:50%;transform:translateX(-50%);width:620px;height:420px;border-radius:50%;pointer-events:none;
  background:radial-gradient(closest-side,rgba(196,181,253,.28),transparent 76%);filter:blur(10px);display:block;}
.ph-inner{position:relative;z-index:1;max-width:780px;margin:0 auto;}
.page-hero .badge{margin-bottom:20px;}
.page-hero h1{font-family:var(--font-title);font-size:46px;font-weight:700;letter-spacing:0;color:var(--purple-deep);line-height:1.15;margin-bottom:16px;}
.page-hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;}
.page-hero .ph-sub{font-size:17px;color:var(--gray);line-height:1.8;max-width:620px;margin:0 auto;}

/* ── Product mockup ── */
.mockup{position:relative;background:#fff;border-radius:var(--r-lg);box-shadow:var(--shadow);border:1px solid var(--line);padding:0;overflow:hidden;}
.mockup .bar{height:38px;display:flex;align-items:center;gap:7px;padding:0 16px;border-bottom:1px solid var(--line);background:#FBFAFF;}
.mockup .bar i{width:11px;height:11px;border-radius:50%;display:block;}
.mockup .bar i:nth-child(1){background:#FF6058;}.mockup .bar i:nth-child(2){background:#FFBE2E;}.mockup .bar i:nth-child(3){background:#2ACA44;}
.mockup .bar .t{margin-left:10px;font-size:13px;color:var(--gray-soft);font-weight:600;}
.mockup .canvas{padding:22px 22px 26px;background:radial-gradient(circle at 1px 1px,rgba(139,92,246,.12) 1px,transparent 0);background-size:18px 18px;background-color:#fff;min-height:300px;}
.mk-row{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.mk-ava{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--purple-bright),var(--purple-mid));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;flex-shrink:0;}
.mk-on{font-size:12px;font-weight:700;color:#1ba94c;background:rgba(27,169,76,.1);padding:4px 9px;border-radius:11px;white-space:nowrap;}
.mk-flow{position:relative;margin-top:6px;height:182px;}
.node{position:absolute;background:#fff;border:1.5px solid rgba(139,92,246,.28);border-radius:12px;padding:10px 12px;box-shadow:0 8px 20px rgba(29,32,106,.08);min-width:104px;}
.node b{display:block;font-size:13px;font-weight:700;color:var(--purple-deep);margin-bottom:5px;}
.node .pill{height:6px;border-radius:4px;background:#E7E3F6;}
.node.n1{left:0;top:8px;} .node.n2{left:150px;top:64px;background:linear-gradient(135deg,var(--purple-bright),var(--purple-mid));border-color:transparent;}
.node.n2 b{color:#fff;} .node.n2 .pill{background:rgba(255,255,255,.45);}
.node.n3{left:0;top:122px;} .node.n4{right:0;top:118px;}
.mk-flow svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;}

/* ── Sections ── */
.sec{padding:96px 24px;}
.sec-inner{max-width:1120px;margin:0 auto;}
.sec-eyebrow{font-size:14px;font-weight:800;letter-spacing:1.8px;color:var(--purple-bright);text-align:center;margin-bottom:14px;text-transform:uppercase;}
.sec-title{font-family:var(--font-title);font-size:40px;font-weight:700;letter-spacing:0;color:var(--purple-deep);text-align:center;margin-bottom:14px;}
.sec-desc{font-size:16px;color:var(--gray);text-align:center;max-width:560px;margin:0 auto 54px;}
.sec-alt{background:var(--bg-soft);}

/* ── Bento ── */
.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:170px;gap:16px;}
.tile{border-radius:var(--r-lg);padding:26px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden;transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s;}
.tile:hover{transform:translateY(-4px);box-shadow:0 22px 46px rgba(29,32,106,.14);}
.tile .big{font-size:48px;font-weight:800;letter-spacing:-1px;line-height:1;}
.tile .big small{font-size:22px;font-weight:700;}
.tile .lbl{font-size:15px;font-weight:600;opacity:.85;}
.tile-deep{background:var(--purple-deep);color:#fff;grid-column:span 1;grid-row:span 2;}
.tile-deep .lbl{opacity:.7;}
.tile-bright{background:linear-gradient(150deg,var(--purple-bright),var(--purple-mid));color:#fff;grid-column:span 1;}
.tile-light{background:var(--purple-lightest);color:var(--purple-deep);grid-column:span 2;}
.tile-quote{background:#fff;border:1px solid var(--line);color:var(--ink);grid-column:span 2;grid-row:span 1;box-shadow:0 1px 2px rgba(29,32,106,.03);}
.tile-quote .q{font-size:16px;font-weight:600;line-height:1.6;color:var(--ink);}
.tile-quote .who{font-size:13px;color:var(--gray-soft);}
.tile-mid{background:linear-gradient(150deg,var(--purple-mid),var(--purple-deep));color:#fff;grid-column:span 1;}
.tile-logos{background:#fff;border:1px solid var(--line);grid-column:span 1;box-shadow:0 1px 2px rgba(29,32,106,.03);}
.tile-logos .lbl{color:var(--gray-soft);}
.tile-logos .brands{font-size:15px;font-weight:800;color:var(--purple-deep);line-height:1.9;}
.tile-icon{width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;color:#fff;}
.tile-light .tile-icon{background:rgba(139,92,246,.14);color:var(--purple-bright);}
.tile-icon svg{width:22px;height:22px;}

/* ── Duo / Scene / Process ── */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
@media(max-width:760px){.duo{grid-template-columns:1fr;}}
.duo-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:38px 34px;box-shadow:0 1px 2px rgba(29,32,106,.03);transition:transform .4s cubic-bezier(.2,.7,.2,1),box-shadow .4s,border-color .4s;}
.duo-card:hover{transform:translateY(-5px);box-shadow:0 24px 50px rgba(29,32,106,.1);border-color:rgba(139,92,246,.22);}
.duo-ico{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(139,92,246,.1);color:var(--purple-bright);margin-bottom:20px;transition:background .4s,color .4s,transform .4s;}
.duo-ico svg{width:26px;height:26px;}
.duo-card:hover .duo-ico{background:var(--purple-bright);color:#fff;transform:scale(1.05);}
.duo-card h3{font-family:var(--font-title);font-size:24px;font-weight:700;color:var(--purple-deep);margin-bottom:8px;}
.duo-tag{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--purple-mid);background:rgba(139,92,246,.08);padding:5px 12px;border-radius:10px;margin-bottom:16px;}
.duo-card p{font-size:15px;color:var(--gray);line-height:1.85;}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
@media(max-width:760px){.scene-grid{grid-template-columns:1fr;}}
.scene{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;box-shadow:0 1px 2px rgba(29,32,106,.03);transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s;}
.scene:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(29,32,106,.08);}
.scene .si{width:44px;height:44px;border-radius:12px;background:rgba(139,92,246,.09);color:var(--purple-bright);display:flex;align-items:center;justify-content:center;margin-bottom:14px;}
.scene .si svg{width:23px;height:23px;}
.scene h4{font-family:var(--font-title);font-size:18px;font-weight:700;color:var(--purple-deep);margin-bottom:6px;}
.scene p{font-size:15px;color:var(--gray);line-height:1.6;}
.process{display:flex;align-items:flex-start;gap:0;flex-wrap:wrap;margin-top:48px;padding-top:40px;border-top:1px solid var(--line);}
.pstep{flex:1;min-width:120px;text-align:center;padding:0 8px;position:relative;}
.pstep .pn{width:46px;height:46px;border-radius:50%;background:var(--purple-deep);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 12px;font-size:17px;}
.pstep h5{font-size:15px;font-weight:800;color:var(--ink);margin-bottom:4px;}
.pstep p{font-size:14px;color:var(--gray-soft);}
.pstep:not(:last-child)::after{content:'→';position:absolute;right:-6px;top:13px;color:var(--purple-light);font-weight:700;}
@media(max-width:760px){.process{flex-direction:column;gap:26px;}.pstep:not(:last-child)::after{content:'↓';right:auto;left:50%;top:auto;bottom:-20px;transform:translateX(-50%);}}

/* ── Tier cards (社群) ── */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
@media(max-width:860px){.tiers{grid-template-columns:1fr;}}
.tier{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 26px;box-shadow:0 1px 2px rgba(29,32,106,.03);transition:transform .4s cubic-bezier(.2,.7,.2,1),box-shadow .4s,border-color .4s;}
.tier:hover{transform:translateY(-5px);box-shadow:0 22px 46px rgba(29,32,106,.1);border-color:rgba(139,92,246,.22);}
.tier.feat{background:var(--purple-deep);color:#fff;border-color:transparent;}
.tier .tn{font-size:19px;font-weight:800;margin-bottom:2px;}
.tier .tp{font-size:26px;font-weight:800;color:var(--purple-bright);margin-bottom:14px;letter-spacing:-.5px;}
.tier.feat .tp{color:#C4B5FD;}
.tier ul{list-style:none;}
.tier li{font-size:15px;color:var(--gray);padding:5px 0 5px 18px;position:relative;line-height:1.5;}
.tier.feat li{color:rgba(255,255,255,.82);}
.tier li::before{content:'';position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--purple-bright);}

/* ── Card grid (课程/案例通用) ── */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
@media(max-width:860px){.cards{grid-template-columns:1fr;}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:0 1px 2px rgba(29,32,106,.03);transition:transform .4s cubic-bezier(.2,.7,.2,1),box-shadow .4s;display:block;}
.card:hover{transform:translateY(-5px);box-shadow:0 22px 46px rgba(29,32,106,.1);}
.card .thumb{height:170px;background:linear-gradient(135deg,var(--purple-lightest),var(--purple-light));display:flex;align-items:center;justify-content:center;color:var(--purple-mid);}
.card .thumb svg{width:46px;height:46px;opacity:.55;}
.card .thumb-photo{background:#EDE9FE;}
.card .thumb-photo img{width:100%;height:100%;display:block;object-fit:cover;}
.card .cbody{padding:24px 22px;}
.card .ctag{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.5px;padding:4px 10px;border-radius:8px;margin-bottom:12px;background:#ECFDF5;color:#059669;}
.card .ctag.beta{background:#FEF3C7;color:#B45309;}.card .ctag.dev{background:#F3F4F6;color:#6B7280;}.card .ctag.case{background:rgba(139,92,246,.1);color:var(--purple-mid);}
.card h4{font-family:var(--font-title);font-size:20px;font-weight:700;color:var(--purple-deep);margin-bottom:8px;line-height:1.4;}
.card p{font-size:16px;color:var(--gray);line-height:1.7;}

/* ── Split (关于/价值观通用) ── */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
@media(max-width:860px){.split{grid-template-columns:1fr;gap:32px;}}
.split h2{font-family:var(--font-title);font-size:34px;font-weight:700;letter-spacing:0;color:var(--purple-deep);line-height:1.2;margin-bottom:18px;}
.split p{font-size:16px;color:var(--gray);line-height:1.9;margin-bottom:14px;}
.split .vimg{border-radius:var(--r-xl);background:linear-gradient(145deg,var(--purple-light),var(--purple-mid));min-height:320px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:54px;box-shadow:var(--shadow);}

/* ── CTA band ── */
.cta-band{background:linear-gradient(135deg,var(--purple-mid),var(--purple-deep));color:#fff;text-align:center;padding:80px 24px;}
.cta-band h2{font-family:var(--font-title);font-size:34px;font-weight:700;letter-spacing:0;margin-bottom:14px;}
.cta-band p{font-size:16px;opacity:.82;margin-bottom:30px;max-width:520px;margin-left:auto;margin-right:auto;}
.cta-band .btns{display:inline-flex;gap:14px;flex-wrap:wrap;justify-content:center;}
.cta-band .btn-primary{background:#fff;color:var(--purple-deep);}
.cta-band .btn-primary:hover{box-shadow:0 12px 30px rgba(0,0,0,.22);}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4);}
.cta-band .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08);}

/* ── Footer ── */
.foot{background:#fff;border-top:1px solid var(--line);padding:48px 24px 40px;}
.foot-inner{max-width:1120px;margin:0 auto;display:flex;justify-content:space-between;align-items:flex-start;gap:24px;flex-wrap:wrap;}
.foot .logo{margin-bottom:8px;}
.foot-links{display:flex;gap:26px;flex-wrap:wrap;}
.foot-links a{font-size:15px;color:var(--gray);font-weight:600;}
.foot-links a:hover{color:var(--purple-mid);}
.foot .copy{font-size:14px;color:var(--gray-soft);margin-top:24px;text-align:center;width:100%;line-height:1.9;}
.foot .copy a{color:var(--gray-soft);}

/* ── Reveal ── */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);}
.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none;}}

/* ── 受众 Tab 切换 ── */
.aud-tabs{display:inline-flex;gap:6px;background:var(--bg-soft);border:1px solid var(--line);border-radius:30px;padding:6px;}
.aud-tab{padding:11px 26px;border-radius:24px;font-size:15px;font-weight:700;color:var(--gray);cursor:pointer;border:none;background:none;font-family:inherit;transition:color .2s,background .2s;}
.aud-tab.active{background:var(--grad);color:#fff;box-shadow:0 4px 14px rgba(124,58,237,.28);}
.aud-panel{display:none;}
.aud-panel.active{display:block;}

/* ── 高亮 callout ── */
.callout{background:linear-gradient(135deg,#F5F1FE 0%,#EFEAFE 100%);border:1px solid rgba(139,92,246,.14);border-radius:var(--r-xl);padding:38px 40px;}
.callout .ce{font-size:14px;font-weight:700;letter-spacing:1.5px;color:var(--purple-bright);margin-bottom:10px;}
.callout h3{font-size:23px;font-weight:800;color:var(--ink);margin-bottom:12px;letter-spacing:-.3px;}
.callout p{font-size:15px;color:var(--gray);line-height:1.85;}
.callout .chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px;}
.callout .chip{font-size:14px;font-weight:600;color:var(--purple-mid);background:rgba(255,255,255,.7);border:1px solid rgba(139,92,246,.16);border-radius:10px;padding:8px 14px;}

/* ── 定义块 ── */
.def{max-width:780px;margin:0 auto;text-align:center;}
.def .big-line{font-size:24px;font-weight:800;color:var(--ink);line-height:1.5;margin-bottom:18px;letter-spacing:-.3px;}
.def .big-line em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;}
.def p{font-size:16px;color:var(--gray);line-height:1.9;}

/* ── 对比/特征列表 ── */
.feat-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
@media(max-width:760px){.feat-list{grid-template-columns:1fr;}}
.feat{display:flex;gap:13px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;box-shadow:0 1px 2px rgba(29,32,106,.03);}
.feat .fk{width:32px;height:32px;border-radius:9px;background:rgba(139,92,246,.1);color:var(--purple-bright);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.feat .fk svg{width:17px;height:17px;}
.feat b{display:block;font-size:16px;color:var(--ink);margin-bottom:4px;font-weight:800;}
.feat span{font-size:14px;color:var(--gray);line-height:1.65;}

/* ── 占位（待补真实数据）── */
.placeholder{border:1.5px dashed rgba(139,92,246,.3);border-radius:var(--r-lg);padding:34px;text-align:center;background:var(--bg-soft);}
.placeholder .pt{font-size:16px;font-weight:800;color:var(--purple-mid);margin-bottom:8px;}
.placeholder p{font-size:15px;color:var(--gray);line-height:1.7;}

/* ── Responsive ── */
@media (max-width:900px){
  .nav-links{display:none;}
  .nav-burger{display:flex;}
  .hero{padding:104px 20px 64px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:42px;}
  .hero-sub{font-size:16px;}
  .hero-media figcaption{position:static;border-radius:0;border-left:0;border-right:0;border-bottom:0;box-shadow:none;align-items:flex-start;flex-direction:column;}
  .hero-media strong{white-space:normal;}
  .page-hero h1{font-size:34px;}
  .sec{padding:64px 20px;}
  .sec-title{font-size:30px;}
  .split h2{font-size:26px;}
  .bento{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px;}
  .tile-light,.tile-quote{grid-column:span 2;}
  .tile-deep{grid-row:span 2;}
}
@media (max-width:520px){
  .bento{grid-template-columns:1fr;}
  .tile-deep,.tile-bright,.tile-light,.tile-quote,.tile-mid,.tile-logos{grid-column:span 1;}
  .tile-deep{grid-row:span 1;}
}