/* public/css/marketing.css — landing site design system (content-driven) */
:root{
 --ink:#0a0a0b; --ink2:#52525b; --ink3:#71717a; --line:#e7e7ea; --line2:#efeff1;
 --bg:#fff; --soft:#f7f7f8; --dark:#0a0a0b; --brand:#7d56d6;
 --grad:linear-gradient(135deg,#3b82f6,#7d56d6,#d6249f);
 --radius:16px; --maxw:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.5}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:600;color:var(--ink2);background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:5px 12px;letter-spacing:.01em}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,#3b82f6,#d6249f)}
.dark .eyebrow{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16);color:#d4d4d8}
h1,h2,h3{letter-spacing:-.022em;margin:0;font-weight:700}
.h1{font-size:54px;line-height:1.04}
.h2{font-size:38px;line-height:1.1}
.lead{font-size:18px;color:var(--ink2);line-height:1.6}
.dark{background:var(--dark);color:#fff}
.dark .lead{color:#a1a1aa}
@media(max-width:760px){.h1{font-size:34px}.h2{font-size:27px}.lead{font-size:16px}}

/* nav */
.nav{position:sticky;top:0;z-index:1000;background:#fff;border-bottom:1px solid var(--line2)}
.nav .row{display:flex;align-items:center;gap:26px;height:62px}
.brand{display:flex;align-items:center;gap:8px}
.brand .bmark{width:26px;height:26px}.brand .bword{height:22px;width:auto}
.nav .links{display:flex;gap:22px;font-size:14px;color:#3f3f46;font-weight:500}
.nav .links a:hover{color:#000}
.nav .right{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav .signin{font-size:14px;font-weight:600}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;font-weight:600;font-size:14px;padding:10px 16px;cursor:pointer;border:1px solid transparent;transition:transform .12s,box-shadow .12s,background .12s;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-dark{background:#0a0a0b;color:#fff;position:relative;box-shadow:0 1px 0 rgba(0,0,0,.04)}
.btn-dark::after{content:"";position:absolute;left:10px;right:10px;bottom:-2px;height:3px;border-radius:3px;background:var(--grad);opacity:.95}
.btn-ghost{background:#fff;color:#0a0a0b;border-color:var(--line)}
.btn-light{background:#fff;color:#0a0a0b}
.btn-lg{padding:13px 22px;font-size:15px}
.menu-btn{display:none;background:none;border:none;font-size:22px;cursor:pointer}
@media(max-width:860px){.nav .links,.nav .signin{display:none}.menu-btn{display:block}}

/* sections */
section{padding:70px 0}
.sec-sm{padding:46px 0}
.center{text-align:center}
.sec-head{max-width:680px}
.sec-head.center{margin:0 auto}
.sec-head .h2{margin:10px 0 0}
.sec-head .lead{margin-top:12px}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:center}
@media(max-width:860px){.split{grid-template-columns:1fr}}

/* hero */
.hero{padding:78px 0 30px;position:relative;z-index:0}
.hero .h1{margin-bottom:16px}
.hero .lead{max-width:560px}
.hero .cta{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}
.hero-visual{background:var(--soft);border:1px solid var(--line);border-radius:20px;min-height:300px;display:flex;align-items:center;justify-content:center;padding:24px}
.dark .hero-visual{background:#141416;border-color:#26262a}
.bubble{background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 14px;font-size:14px;box-shadow:0 6px 24px rgba(0,0,0,.06);display:inline-flex;align-items:center;gap:8px}
.bubble.b2{background:#0a0a0b;color:#fff;border-color:#0a0a0b}
.avatar{width:22px;height:22px;border-radius:50%;background:linear-gradient(135deg,#3b82f6,#d6249f)}

/* trust */
.trust{padding:22px 0}
.trust .label{text-align:center;font-size:14px;font-weight:500;color:var(--ink3);margin:0;letter-spacing:.01em}
.trust .logos{display:flex;flex-wrap:wrap;gap:26px 40px;justify-content:center;align-items:center;opacity:.62;font-weight:700;color:#3f3f46;font-size:17px}

/* cards */
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:860px){.g3,.g4{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.dark .card{background:#141416;border-color:#26262a}
.card .ic{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:18px;background:var(--soft);margin-bottom:12px}
.dark .card .ic{background:#1d1d20}
.card h3{font-size:16px;margin-bottom:6px}
.card p{font-size:13.5px;color:var(--ink2);margin:0;line-height:1.55}
.dark .card p{color:#a1a1aa}
.feature-card{padding:0;overflow:hidden}
.feature-card .top{background:var(--soft);min-height:150px;display:flex;align-items:center;justify-content:center;padding:18px;border-bottom:1px solid var(--line)}
.feature-card .body{padding:18px}

/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
@media(max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}
.step{padding:20px;border-right:1px solid var(--line)}
.step:last-child{border-right:none}
.step .num{color:#7d56d6;font-weight:700;font-size:14px}
.step h3{font-size:15px;margin:8px 0 5px}
.step p{font-size:13px;color:var(--ink2);margin:0}

/* problem list */
.plist{display:grid;grid-template-columns:1fr 1fr;gap:22px 30px}
@media(max-width:680px){.plist{grid-template-columns:1fr}}
.pitem{border-left:2px solid var(--line);padding-left:14px}
.pitem h4{font-size:15px;margin:0 0 5px}
.pitem p{font-size:13px;color:var(--ink2);margin:0}

/* testimonials */
.tcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.tcard .q{font-size:14px;line-height:1.6;color:#27272a}
.tcard .who{margin-top:16px;font-size:13px}
.tcard .who b{display:block}
.tcard .who span{color:var(--ink3)}
.stat-card{background:linear-gradient(160deg,#3b82f6,#7d56d6,#d6249f);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;justify-content:flex-end;min-height:170px}
.stat-card .big{font-size:32px;font-weight:800}

/* pricing */
.toggle{display:inline-flex;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:3px;margin:0 auto}
.toggle button{border:none;background:none;padding:8px 16px;border-radius:8px;font:600 13px Inter;cursor:pointer;color:var(--ink2)}
.toggle button.on{background:#fff;color:#000;box-shadow:0 1px 3px rgba(0,0,0,.1)}
.tiers{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
@media(max-width:980px){.tiers{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:680px){.tiers{grid-template-columns:1fr}}
.tier{padding:22px 18px;border-right:1px solid var(--line)}
.tier:last-child{border-right:none}
.tier.pop{background:#fafafa}
.tier .name{font-weight:600;font-size:15px;display:flex;align-items:center;gap:7px}
.tier .price{font-size:32px;font-weight:800;margin:10px 0 2px;letter-spacing:-.02em}
.tier .per{font-size:12px;color:var(--ink3)}
.tier .btn{width:100%;margin:14px 0}
.tier ul{list-style:none;padding:14px 0 0;margin:14px 0 0;border-top:1px solid var(--line);font-size:13px;color:#3f3f46}
.tier li{padding:5px 0 5px 20px;position:relative}
.tier li::before{content:"✓";position:absolute;left:0;color:#16a34a;font-weight:700}
.poppill{background:#0a0a0b;color:#fff;font:700 11px Inter;padding:3px 10px;border-radius:999px}

/* add-ons + faq */
.addon{display:flex;align-items:center;gap:16px;border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin-bottom:12px}
.addon .ic{width:38px;height:38px;border-radius:50%;background:#0a0a0b;color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.addon .grow{flex:1}.addon h4{margin:0;font-size:15px}.addon p{margin:3px 0 0;font-size:13px;color:var(--ink2)}
.addon .price{font-weight:700;font-size:15px;white-space:nowrap}
.faq{max-width:760px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:12px;padding:0;margin-bottom:10px;background:#fff}
.faq summary{padding:16px 18px;font-weight:600;font-size:15px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"⌄";color:var(--ink3)}
.faq p{padding:0 18px 16px;margin:0;color:var(--ink2);font-size:14px}

/* form */
.form-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 20px 50px rgba(0,0,0,.12)}
.form-card h3{font-size:16px;margin:0 0 14px}
.field{margin-bottom:12px}
.field label{display:block;font-size:12.5px;color:var(--ink2);margin-bottom:5px}
.input{width:100%;border:1px solid var(--line);border-radius:9px;padding:10px 12px;font:14px Inter;background:#fff;color:#000}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}

/* cta band */
.cta-band{background:#fff;border-radius:24px;padding:64px 24px;text-align:center;position:relative;overflow:hidden;border:1px solid var(--line)}
.cta-band .h2{position:relative}
.cta-band .blob{position:absolute;width:240px;height:240px;border-radius:50%;filter:blur(4px);opacity:.9}
.cta-band .b-l{left:-60px;bottom:-60px;background:radial-gradient(circle,#6aa0ff,transparent 70%)}
.cta-band .b-r{right:-60px;bottom:-60px;background:radial-gradient(circle,#e0379a,transparent 70%)}

/* footer */
.foot{background:#0a0a0b;color:#a1a1aa;padding:54px 0 34px;position:relative;overflow:hidden}
.foot .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:24px}
@media(max-width:760px){.foot .cols{grid-template-columns:1fr 1fr}}
.foot h5{color:#71717a;font-size:11px;letter-spacing:.1em;text-transform:uppercase;margin:0 0 12px}
.foot a{display:block;font-size:13.5px;padding:4px 0;color:#d4d4d8}
.foot a:hover{color:#fff}
.foot .brandwrap img{height:24px}
.foot .ghost{position:absolute;left:24px;bottom:-30px;font-size:140px;font-weight:800;color:#141416;letter-spacing:-.04em;pointer-events:none;user-select:none}
.muted{color:var(--ink3);font-size:13px}
.hidden{display:none}

/* blog */
.blog-wrap{display:grid;grid-template-columns:190px 1fr;gap:34px}
@media(max-width:760px){.blog-wrap{grid-template-columns:1fr}.blog-side{display:none}}
.blog-side .search{border:1px solid var(--line);border-radius:9px;padding:8px 10px;font-size:13px;color:var(--ink3);margin-bottom:16px}
.blog-cats .ct{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--ink3);margin-bottom:6px}
.blog-cats a{display:block;padding:5px 0;font-size:14px;color:#3f3f46}
.blog-cats a:hover{color:#000}
.posts{display:grid;grid-template-columns:1fr 1fr;gap:26px}
@media(max-width:620px){.posts{grid-template-columns:1fr}}
.post .thumb{border-radius:14px;min-height:165px;display:flex;align-items:flex-end;padding:16px;color:#fff;font-weight:700;font-size:18px;background-size:cover;background-position:center;text-shadow:0 1px 10px rgba(0,0,0,.55),0 1px 2px rgba(0,0,0,.4)}
.post h3{font-size:16px;margin:12px 0 6px;line-height:1.3}
.post p{font-size:13.5px;color:var(--ink2);margin:0;line-height:1.5}
.post .meta{display:flex;align-items:center;gap:6px;margin-top:12px;font-size:12.5px;color:var(--ink3)}
.post .meta .av{width:22px;height:22px;border-radius:50%;background:linear-gradient(135deg,#94a3b8,#475569);flex-shrink:0}
.news-card{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;background:var(--soft);border:1px solid var(--line);border-radius:16px;padding:20px 22px}
.news-card b{font-size:16px}.news-card p{margin:4px 0 0;font-size:13.5px;color:var(--ink2)}

/* ===================== mega-menu navigation ===================== */
.nav .row{position:relative}
.nav .links{display:flex;gap:3px;align-items:center}
.nav-item{display:flex;align-items:center}
.nav-link,.nav-trigger{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:#3f3f46;padding:8px 13px;border-radius:9px;cursor:pointer;background:none;border:none;font-family:inherit;text-decoration:none}
.nav-link:hover,.nav-trigger:hover,.nav-item:hover .nav-trigger,.nav-item.open .nav-trigger,.nav-link.on{color:#000;background:#f4f4f5}
.nav-trigger .chev{width:8px;height:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);margin-top:-3px;transition:transform .2s}
.nav-item:hover .nav-trigger .chev,.nav-item.open .nav-trigger .chev{transform:rotate(-135deg);margin-top:2px}
.mega{position:absolute;left:50%;top:100%;width:min(760px,94vw);padding-top:16px;transform:translateX(-50%) translateY(6px);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease .45s,transform .2s ease .45s,visibility 0s .65s,pointer-events 0s .45s;z-index:1001}
.nav-item:hover .mega,.nav-item.open .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0);transition:opacity .2s ease 0s,transform .2s ease 0s,visibility 0s 0s,pointer-events 0s 0s}
.mega-inner{background:#fff;border:1px solid var(--line2);border-radius:16px;box-shadow:0 24px 70px rgba(20,16,40,.16);padding:16px;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mega-col{padding:6px}
.mega-col-r{border-left:1px solid var(--line2);padding-left:18px}
.mega-label{font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:#a1a1aa;font-weight:700;padding:2px 10px 8px}
.mitem{display:flex;gap:12px;align-items:flex-start;padding:9px 10px;border-radius:12px;text-decoration:none}
.mitem:hover{background:#f6f6f7}
.mtile{width:38px;height:38px;border-radius:10px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}
.mtile svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.mtext b{display:block;font-size:14px;color:#18181b;font-weight:600;line-height:1.3}
.mtext span{font-size:12.5px;color:#71717a;line-height:1.35}
.mfeat{display:block;text-decoration:none}
.mfeat-img{height:118px;border-radius:12px;background:linear-gradient(135deg,#3b82f6,#7d56d6,#d6249f);display:flex;align-items:center;justify-content:center;gap:9px;color:#fff;font-weight:700;font-size:15px;overflow:hidden}
.mfeat-img img{width:26px;height:26px}
.mfeat b{display:block;font-size:14px;color:#18181b;margin-top:11px;line-height:1.35}
.mfeat span{font-size:12.5px;color:#71717a}
.m-mob{padding:6px 0 14px}
.m-mob .mlbl{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#a1a1aa;font-weight:700;margin:10px 0 4px}
.m-mob a{display:block;padding:7px 2px;font-size:15px;color:#27272a;text-decoration:none}
@media(max-width:860px){.nav .links{display:none}.mega{display:none}}
@media(min-width:861px){.m-mob{display:none!important}}

/* mega-menu backdrop: dim + blur the page beneath the nav so the panel reads solid */
.nav-item.has-mega::before{content:"";position:fixed;left:0;right:0;top:63px;bottom:0;background:rgba(13,11,24,.5);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .22s ease .45s,visibility 0s .67s}
.nav-item.has-mega:hover::before,.nav-item.has-mega.open::before{opacity:1;visibility:visible;transition:opacity .22s ease 0s,visibility 0s 0s}
.mega-inner{position:relative;z-index:1;background:#fff}
@media(max-width:860px){.nav-item.has-mega::before{display:none}}

/* guide page: prose + FAQ */
.gprose p{font-size:15.5px;line-height:1.72;color:var(--ink2);margin:0 0 15px}
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:15px 2px}
.faq summary{font-weight:600;font-size:15px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:#7d56d6;font-size:22px;font-weight:400;line-height:1}
.faq details[open] summary::after{content:"\2013"}
.faq p{margin:10px 0 0;font-size:14px;color:var(--ink2);line-height:1.62}

/* i18n line-break fixes: long translations must wrap gracefully, never overflow */
body{overflow-wrap:break-word}
.btn{white-space:normal;line-height:1.25}
.nav-link,.nav-trigger{white-space:normal;text-align:center}
.tier .name,.feat h3,.faq-q,.mtext b,.mtext span{overflow-wrap:break-word}
.links{flex-wrap:wrap;row-gap:6px}

/* Footer: keep the copyright/links readable and replace the giant "AI-SNS"
   text watermark with a faint brand logo tucked in the corner (behind content). */
.foot .wrap{position:relative;z-index:2}
.foot .ghost{left:auto;right:34px;bottom:26px;top:auto;width:100px;height:100px;font-size:0;color:transparent;background:url(/img/logo-mark.png) center/contain no-repeat;opacity:0.85;z-index:1}