/* Lucco AI — brand: Navy #0B1E4F / Orange #FF6A3D / Poppins + Inter + Noto Sans SC */
:root{
  --navy:#0B1E4F; --navy-90:#16295e; --orange:#FF6A3D; --orange-dark:#e5552b;
  --ink:#333333; --muted:#5a6478; --line:#e3e8f2; --bg:#ffffff; --bg-alt:#F5F7FA;
  --radius:14px; --maxw:1080px;
  --font-head:'Poppins','Noto Sans SC',sans-serif;
  --font-body:'Inter','Noto Sans SC',sans-serif;
}
html[lang="zh"]{ --font-head:'Poppins','Noto Sans SC',sans-serif; --font-body:'Noto Sans SC','Inter',sans-serif; }
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);color:var(--ink);background:var(--bg);line-height:1.65;font-size:16.5px}
img{max-width:100%;display:block}
a{color:var(--navy);text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ---------- header ---------- */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.nav .logo img{height:38px;width:auto}
.nav-links{display:flex;gap:26px;align-items:center;list-style:none}
.nav-links a{font-weight:500;font-size:.95rem;color:var(--navy)}
.nav-links a:hover{color:var(--orange)}
.nav-cta{background:var(--orange);color:#fff !important;padding:9px 18px;border-radius:999px;font-weight:600}
.nav-cta:hover{background:var(--orange-dark);color:#fff !important}
.lang-switch{display:flex;gap:8px;font-size:.85rem;color:var(--muted)}
.lang-switch a{color:var(--muted)} .lang-switch a.active{color:var(--navy);font-weight:700}
.menu-btn{display:none;background:none;border:0;font-size:1.6rem;color:var(--navy);cursor:pointer}

/* ---------- hero ---------- */
.hero{padding:72px 0 60px;background:linear-gradient(180deg,#fff 0%,var(--bg-alt) 100%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--orange);margin-bottom:14px}
h1{font-family:var(--font-head);font-weight:700;font-size:clamp(1.9rem,4.4vw,3rem);line-height:1.18;color:var(--navy)}
.hero p.lead{margin:18px 0 26px;font-size:1.12rem;color:var(--muted);max-width:34em}
.btn{display:inline-block;padding:14px 28px;border-radius:999px;font-weight:600;font-size:1rem;transition:transform .15s ease}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark);color:#fff}
.btn-ghost{border:2px solid var(--navy);color:var(--navy);margin-left:12px}
.btn-ghost:hover{background:var(--navy);color:#fff}
.hero-note{margin-top:14px;font-size:.85rem;color:var(--muted)}

/* ---------- signature: chat demo ---------- */
.chat-demo{background:var(--navy);border-radius:22px;padding:26px 22px 22px;box-shadow:0 24px 60px rgba(11,30,79,.25);position:relative;overflow:hidden}
.chat-demo .chat-head{display:flex;align-items:center;gap:10px;color:#cdd6ee;font-size:.8rem;margin-bottom:16px}
.chat-demo .dot{width:9px;height:9px;border-radius:50%;background:#3ddc84;box-shadow:0 0 0 4px rgba(61,220,132,.15)}
.bubble{max-width:85%;padding:11px 15px;border-radius:16px;font-size:.92rem;line-height:1.5;margin-bottom:10px;opacity:0;transform:translateY(8px);animation:pop .5s ease forwards}
.bubble.customer{background:#233667;color:#eaeefb;border-bottom-left-radius:4px}
.bubble.ai{background:#fff;color:var(--ink);margin-left:auto;border-bottom-right-radius:4px}
.bubble .time{display:block;font-size:.7rem;color:#93a0c4;margin-top:4px}
.bubble.ai .time{color:#a7a7a7;text-align:right}
.bubble:nth-child(2){animation-delay:.3s}
.bubble:nth-child(3){animation-delay:1.1s}
.bubble:nth-child(4){animation-delay:1.9s}
@keyframes pop{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.bubble{animation:none;opacity:1;transform:none}}

/* ---------- sections ---------- */
section{padding:64px 0}
section.alt{background:var(--bg-alt)}
section.navy{background:var(--navy);color:#dfe6f7}
section.navy h2{color:#fff}
h2{font-family:var(--font-head);font-weight:700;font-size:clamp(1.4rem,3vw,2rem);color:var(--navy);margin-bottom:12px}
.section-lead{color:var(--muted);max-width:44em;margin-bottom:34px}
section.navy .section-lead{color:#b9c4e4}

.cards{display:grid;gap:18px}
.cards.c2{grid-template-columns:repeat(2,1fr)}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card h3{font-family:var(--font-head);font-size:1.05rem;color:var(--navy);margin-bottom:8px}
.card p{font-size:.94rem;color:var(--muted)}
.card .big{font-size:1.6rem;font-weight:700;color:var(--orange);font-family:var(--font-head)}
section.alt .card{background:#fff}
section.navy .card{background:var(--navy-90);border-color:#2a3c74}
section.navy .card h3{color:#fff} section.navy .card p{color:#b9c4e4}

ul.checks{list-style:none;margin:14px 0}
ul.checks li{padding-left:28px;position:relative;margin-bottom:10px;color:var(--ink)}
ul.checks li::before{content:"✓";position:absolute;left:0;color:var(--orange);font-weight:700}
section.navy ul.checks li{color:#dfe6f7}

/* pain list */
ul.pains{list-style:none;margin:10px 0}
ul.pains li{padding-left:30px;position:relative;margin-bottom:12px;color:var(--ink)}
ul.pains li::before{content:"✗";position:absolute;left:0;color:#c34a4a;font-weight:700}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:step}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;counter-increment:step}
.step::before{content:counter(step);display:inline-flex;width:34px;height:34px;border-radius:50%;background:var(--navy);color:#fff;align-items:center;justify-content:center;font-weight:700;font-family:var(--font-head);margin-bottom:12px}
.step h3{font-family:var(--font-head);font-size:1rem;color:var(--navy);margin-bottom:6px}
.step p{font-size:.92rem;color:var(--muted)}

/* channels */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 18px;font-size:.9rem;font-weight:500;color:var(--navy)}
section.navy .chip{background:var(--navy-90);border-color:#2a3c74;color:#dfe6f7}

/* ---------- pricing table ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column}
.plan.popular{border:2px solid var(--orange);position:relative}
.plan .tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--orange);color:#fff;font-size:.75rem;font-weight:600;padding:3px 14px;border-radius:999px;white-space:nowrap}
.plan h3{font-family:var(--font-head);color:var(--navy);font-size:1.1rem}
.plan .price{font-family:var(--font-head);font-size:2rem;font-weight:700;color:var(--navy);margin:8px 0 2px}
.plan .price span{font-size:.9rem;font-weight:500;color:var(--muted)}
.plan .oneliner{color:var(--orange);font-weight:600;font-size:.92rem;margin-bottom:10px}
.plan ul{list-style:none;margin:12px 0 18px;flex:1}
.plan li{padding-left:24px;position:relative;font-size:.9rem;margin-bottom:9px;color:var(--ink)}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--orange);font-weight:700}
.plan li.no{color:#9aa3b8}
.plan li.no::before{content:"—";color:#c2c9d8}
.plan .btn{text-align:center}

table.cmp{width:100%;border-collapse:collapse;font-size:.92rem;background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
table.cmp th,table.cmp td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.cmp th{background:var(--navy);color:#fff;font-family:var(--font-head);font-weight:600}
table.cmp tr:last-child td{border-bottom:0}

/* faq */
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;padding:0 20px}
.faq summary{cursor:pointer;font-weight:600;color:var(--navy);padding:16px 0;font-family:var(--font-head);font-size:.98rem;list-style:none;position:relative;padding-right:28px}
.faq summary::after{content:"+";position:absolute;right:2px;top:14px;font-size:1.2rem;color:var(--orange)}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 16px;color:var(--muted);font-size:.94rem}

/* cta band */
.cta-band{background:var(--navy);border-radius:22px;padding:46px 40px;text-align:center;color:#fff}
.cta-band h2{color:#fff}
.cta-band p{color:#b9c4e4;margin:10px auto 24px;max-width:36em}

/* footer */
footer{background:var(--navy);color:#b9c4e4;padding:52px 0 32px;font-size:.9rem}
footer .cols{display:grid;grid-template-columns:1.3fr .9fr .9fr 1fr 1.2fr;gap:26px;margin-bottom:34px}
footer img{height:36px;margin-bottom:14px}
footer h4{color:#fff;font-family:var(--font-head);font-size:.95rem;margin-bottom:12px}
footer a{color:#b9c4e4;display:block;margin-bottom:8px}
footer a:hover{color:#fff}
footer .fine{border-top:1px solid #223468;padding-top:20px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.82rem;color:#8b98c2}

/* whatsapp float */
.wa-float{position:fixed;right:20px;bottom:20px;z-index:60;background:#25D366;width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 26px rgba(0,0,0,.25)}
.wa-float svg{width:30px;height:30px;fill:#fff}
.wa-float:hover{transform:scale(1.06)}
.wa-float{transition:transform .15s ease}

/* language suggest banner */
.lang-banner{position:fixed;bottom:0;left:0;right:0;background:var(--navy);color:#fff;padding:12px 18px;display:none;z-index:70;text-align:center;font-size:.92rem}
.lang-banner a{color:var(--orange);font-weight:700;margin:0 6px}
.lang-banner button{background:none;border:0;color:#93a0c4;margin-left:10px;cursor:pointer;font-size:1rem}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .cards.c3,.steps,.price-grid{grid-template-columns:1fr}
  .cards.c2{grid-template-columns:1fr}
  footer .cols{grid-template-columns:1fr 1fr}
  .nav-links{position:fixed;inset:72px 0 auto 0;background:#fff;flex-direction:column;padding:20px;border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .menu-btn{display:block}
  .btn-ghost{margin-left:0;margin-top:10px}
}
@media(max-width:560px){
  section{padding:48px 0}
  .hero{padding:48px 0 40px}
  .cta-band{padding:36px 22px}
  footer .cols{grid-template-columns:1fr}
}

/* WA-style interactive buttons in chat demo */
.chat-btns{display:flex;gap:8px;margin:-2px 0 10px;justify-content:flex-end;flex-wrap:wrap;opacity:0;transform:translateY(8px);animation:pop .5s ease forwards;animation-delay:1.6s}
.chat-btn{background:#fff;border:1.5px solid #cfd7ea;color:var(--navy);border-radius:10px;padding:8px 16px;font-size:.85rem;font-weight:600}
.chat-btn.sel{background:#e7f6ee;border-color:#25D366;color:#128C4B}
@media (prefers-reduced-motion:reduce){.chat-btns{animation:none;opacity:1;transform:none}}
/* sad (no-AI) chat variant */
.chat-demo.sad{background:#eef1f7;box-shadow:none;border:1px solid var(--line)}
.chat-demo.sad .chat-head{color:#7a8296}
.chat-demo.sad .dot{background:#c2c9d8;box-shadow:none}
.chat-demo.sad .bubble.customer{background:#fff;color:var(--ink);border:1px solid var(--line)}
.chat-demo.sad .bubble.customer .time{color:#9aa3b8}
.chat-demo.sad .bubble.ai{background:#dfe3ee;color:#4a5266}
.chat-demo.sad .bubble.ai .time{color:#8b93a8}
.chat-demo.sad .missed{font-size:.78rem;color:#c34a4a;font-weight:600;text-align:center;margin:6px 0}
/* generic split layout */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:30px}}

/* clickable industry cards */
a.card{display:block}
a.card:hover{border-color:var(--orange)}
a.card h3::after{content:" →";color:var(--orange);opacity:0;transition:opacity .15s}
a.card:hover h3::after{opacity:1}
\n/* legal pages */\n.legal table{width:100%;border-collapse:collapse;margin:14px 0;font-size:.95rem}\n.legal th,.legal td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}\n.legal h2{margin-top:34px}\n