/* ═══════════════════════════════════════
   business-automation.css — Trendtive Digital
   Ads landing page (stripped chrome). Self-contained.
   Relies on css/global.css for brand tokens + .cal-* + .reveal.
   Does NOT modify global.css.
   ═══════════════════════════════════════ */

/* ── IMAGE PLACEHOLDER BLOCK (solid deep-green, off-white 2-line caption) ── */
.ph-block{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  width:100%;background:#06392F;border-radius:14px;padding:28px 24px;text-align:center;
  border:1px solid rgba(255,255,255,.06)}
.ph-block span:first-child{color:#F7F2E8;font-size:14px;line-height:1.5;max-width:82%;font-weight:400}
.ph-block span:last-child{color:rgba(247,242,232,.72);font-size:12px;letter-spacing:.6px}
.ph-block--small{padding:18px 14px;border-radius:10px}
.ph-block--small span:first-child{font-size:12px}

/* ── STRIPPED TOP BAR (logo + single CTA, no nav links) ── */
.ba-topbar{position:sticky;top:0;z-index:200;height:66px;padding:0 40px;display:flex;
  align-items:center;justify-content:space-between;background:rgba(255,255,255,.97);
  backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.ba-topbar-logo{font-size:19px;font-weight:700;color:var(--g);letter-spacing:-.3px;white-space:nowrap}
.ba-topbar-logo span{color:var(--gold)}
.ba-topbar-cta{background:var(--g);color:#fff;padding:10px 22px;border-radius:var(--r);font-size:14px;
  font-weight:700;letter-spacing:.3px;transition:background .2s;white-space:nowrap;cursor:pointer;border:none;
  font-family:inherit}
.ba-topbar-cta:hover{background:var(--gl)}
.ba-topbar-cta .cta-short{display:none}

/* ── LANGUAGE SWITCHER (EN ⇄ ZH) — static two-link toggle, no JS ── */
.ba-topbar-right{display:flex;align-items:center;gap:16px}
.ba-lang{display:inline-flex;align-items:center;border:1px solid var(--border);border-radius:var(--r);
  overflow:hidden;flex-shrink:0}
.ba-lang-link{display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
  color:var(--t2);padding:8px 12px;line-height:1;letter-spacing:.3px;transition:background .18s,color .18s}
.ba-lang-link + .ba-lang-link{border-left:1px solid var(--border)}
.ba-lang-link:hover{background:var(--gm);color:var(--g)}
.ba-lang-link.active{background:var(--g);color:#fff;cursor:default}

/* ── ZH LOCALE: system CJK font stack (no downloads) + relax CJK letter-spacing ── */
body.lang-zh{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC",Helvetica,Arial,sans-serif}
body.lang-zh h1,body.lang-zh h2,body.lang-zh .ba-h2,body.lang-zh .ba-offer-h2,body.lang-zh .ba-final h2,body.lang-zh .cal-h2{letter-spacing:normal}

/* ── SHARED SECTION SHELL ── */
.ba-wrap{max-width:1280px;margin:0 auto}
.ba-section{padding:104px 60px}
.ba-eyebrow{font-size:12px;letter-spacing:2.5px;text-transform:uppercase;color:var(--gold);
  font-weight:700;margin-bottom:14px}
.ba-h2{font-size:clamp(28px,3vw,44px);font-weight:700;color:var(--g);line-height:1.12;
  letter-spacing:-1px;margin-bottom:18px;max-width:760px}
.ba-lead{font-size:17px;color:var(--t2);line-height:1.75;max-width:680px}

/* ── HERO (green) ── */
.ba-hero{background:var(--g);padding:84px 60px 92px;position:relative;overflow:hidden}
.ba-hero::before{content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse at 72% 40%,rgba(201,168,76,.10),transparent 60%);pointer-events:none}
.ba-hero-inner{max-width:1280px;margin:0 auto;position:relative;display:grid;
  grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.ba-hero-label{font-size:12px;letter-spacing:2.5px;text-transform:uppercase;
  color:rgba(201,168,76,.85);font-weight:700;margin-bottom:20px}
.ba-hero h1{font-size:clamp(34px,4vw,56px);font-weight:700;line-height:1.07;letter-spacing:-1.5px;
  color:#fff;margin-bottom:22px}
.ba-hero h1 em{font-style:normal;color:var(--gold)}
.ba-hero-sub{font-size:18px;line-height:1.7;color:rgba(255,255,255,.66);max-width:540px;margin-bottom:34px}
.ba-hero-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:22px}
.ba-btn-primary{display:inline-flex;align-items:center;gap:9px;background:var(--gold);color:var(--gd);
  padding:16px 30px;border-radius:var(--r);font-size:15px;font-weight:700;letter-spacing:.3px;
  transition:background .2s,transform .2s;cursor:pointer;border:none;font-family:inherit}
.ba-btn-primary:hover{background:var(--gold-l);transform:translateY(-1px)}
.ba-btn-primary svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2.2}
.ba-hero-trust{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.55);
  letter-spacing:.2px}
.ba-hero-trust svg{width:15px;height:15px;fill:none;stroke:var(--gold);stroke-width:2;flex-shrink:0}
.ba-hero-visual{width:100%}

/* ── PROBLEM ── */
.ba-problem{background:var(--off)}
.ba-problem-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.ba-pain{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:28px 26px}
.ba-pain-icon{width:44px;height:44px;border-radius:10px;background:var(--gm);display:flex;
  align-items:center;justify-content:center;margin-bottom:18px}
.ba-pain-icon svg{width:22px;height:22px;fill:none;stroke:var(--g);stroke-width:1.7}
.ba-pain-title{font-size:16px;font-weight:700;color:var(--t1);margin-bottom:9px;line-height:1.35}
.ba-pain-desc{font-size:14px;color:var(--t2);line-height:1.65}
.ba-problem-note{margin-top:38px;font-size:19px;font-weight:700;color:var(--g);line-height:1.4;
  max-width:720px}

/* ── HOW IT WORKS ── */
.ba-how{background:var(--white)}
.ba-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:54px;margin-bottom:52px}
.ba-step{position:relative;padding-top:30px}
.ba-step-num{position:absolute;top:0;left:0;font-size:48px;font-weight:700;color:var(--g);
  opacity:.14;letter-spacing:-2px;line-height:1}
.ba-step-title{font-size:19px;font-weight:700;color:var(--g);margin-bottom:12px;padding-top:14px}
.ba-step-desc{font-size:15px;color:var(--t2);line-height:1.7}
.ba-step-desc strong{color:var(--t1);font-weight:700}

/* ── BENEFITS ── */
.ba-benefits{background:var(--off)}
.ba-benefit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.ba-benefit{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:30px 26px;
  transition:border-color .2s,box-shadow .2s}
.ba-benefit:hover{border-color:rgba(6,57,47,.25);box-shadow:0 10px 30px rgba(6,57,47,.06)}
.ba-benefit-icon{width:46px;height:46px;border-radius:10px;background:var(--g);display:flex;
  align-items:center;justify-content:center;margin-bottom:20px}
.ba-benefit-icon svg{width:22px;height:22px;fill:none;stroke:var(--gold);stroke-width:1.7}
.ba-benefit-title{font-size:17px;font-weight:700;color:var(--t1);margin-bottom:10px}
.ba-benefit-desc{font-size:14px;color:var(--t2);line-height:1.7}

/* ── USE CASES ── */
.ba-usecases{background:var(--white)}
.ba-uc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:52px}
.ba-uc{display:flex;gap:18px;background:var(--off);border:1px solid var(--border);border-radius:12px;
  padding:24px 26px}
.ba-uc-icon{width:42px;height:42px;border-radius:10px;background:var(--gm);display:flex;
  align-items:center;justify-content:center;flex-shrink:0}
.ba-uc-icon svg{width:21px;height:21px;fill:none;stroke:var(--g);stroke-width:1.7}
.ba-uc-title{font-size:15px;font-weight:700;color:var(--t1);margin-bottom:6px;line-height:1.35}
.ba-uc-desc{font-size:13.5px;color:var(--t2);line-height:1.6}

/* ── TRUST / CREDIBILITY ── */
.ba-trust{background:var(--g);color:#fff}
.ba-trust .ba-eyebrow{color:rgba(201,168,76,.85)}
.ba-trust .ba-h2{color:#fff}
.ba-trust-lead{font-size:17px;color:rgba(255,255,255,.66);line-height:1.75;max-width:680px}
.ba-trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:56px}
.ba-trust-col-h{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.ba-trust-col-h svg{width:22px;height:22px;fill:none;stroke:var(--gold);stroke-width:1.8;flex-shrink:0}
.ba-trust-col-title{font-size:17px;font-weight:700;color:#fff}
.ba-trust-list{list-style:none;display:flex;flex-direction:column;gap:14px}
.ba-trust-list li{position:relative;padding-left:26px;font-size:14.5px;color:rgba(255,255,255,.72);
  line-height:1.6}
.ba-trust-list li::before{content:'';position:absolute;left:0;top:7px;width:12px;height:12px;
  border-radius:50%;background:rgba(201,168,76,.22);
  box-shadow:inset 0 0 0 2px var(--gold)}

/* ── OFFER (reuses global .cal-* system; left column pitch) ── */
.ba-offer{background:var(--cream);border-top:1px solid var(--border)}
.ba-offer-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:80px;
  align-items:start}
.ba-offer-badge{display:inline-flex;align-items:center;gap:8px;background:var(--g);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;padding:7px 16px;
  border-radius:20px;margin-bottom:22px}
.ba-offer-h2{font-size:clamp(28px,3vw,44px);font-weight:700;color:var(--g);line-height:1.12;
  letter-spacing:-1px;margin-bottom:18px}
.ba-offer-sub{font-size:16px;color:var(--t2);line-height:1.75;margin-bottom:34px}

/* ── FAQ (mirrors site pattern; JS toggleFaq is global) ── */
.ba-faq{background:var(--white)}
.ba-faq-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1fr 2fr;gap:80px;
  align-items:start}
.faq-items{display:flex;flex-direction:column;border:1px solid var(--border);border-radius:10px;overflow:hidden}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:none}
.faq-header{display:flex;align-items:center;gap:16px;padding:22px 28px;cursor:pointer;
  transition:background .2s;user-select:none}
.faq-header:hover{background:var(--off)}
.faq-item.open .faq-header{background:var(--gm)}
.faq-q{font-size:15px;font-weight:600;color:var(--t1);flex:1;line-height:1.4;transition:color .2s}
.faq-item.open .faq-q{color:var(--g)}
.faq-chevron{width:20px;height:20px;fill:none;stroke:var(--t3);stroke-width:1.5;
  transition:transform .35s,stroke .2s;flex-shrink:0}
.faq-item.open .faq-chevron{transform:rotate(180deg);stroke:var(--g)}
.faq-body{overflow:hidden;max-height:0;transition:max-height .42s ease}
.faq-body-inner{padding:4px 28px 24px 28px}
.faq-a{font-size:14px;font-weight:400;color:var(--t2);line-height:1.8}

/* ── FINAL CTA (green band) ── */
.ba-final{background:var(--gd);padding:96px 60px;text-align:center}
.ba-final-inner{max-width:760px;margin:0 auto}
.ba-final h2{font-size:clamp(28px,3.2vw,46px);font-weight:700;color:#fff;line-height:1.1;
  letter-spacing:-1px;margin-bottom:18px}
.ba-final p{font-size:17px;color:rgba(255,255,255,.66);line-height:1.7;margin-bottom:36px}
.ba-final .ba-btn-primary{font-size:16px;padding:18px 36px}
.ba-final-note{margin-top:20px;font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.2px}

/* ── SLIM FOOTER ── */
.ba-footer{background:var(--g);padding:34px 60px}
.ba-footer-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;
  gap:20px;flex-wrap:wrap}
.ba-footer-brand{font-size:16px;font-weight:700;color:#fff}
.ba-footer-brand span{color:var(--gold)}
.ba-footer-reg{font-size:12px;color:rgba(255,255,255,.5);margin-top:4px}
.ba-footer-links{display:flex;gap:22px;flex-wrap:wrap}
.ba-footer-links a{font-size:13px;color:rgba(255,255,255,.62);transition:color .2s}
.ba-footer-links a:hover{color:var(--gold)}

/* ══════════ RESPONSIVE ══════════ */
@media (max-width:1000px){
  .ba-section{padding:80px 40px}
  .ba-hero{padding:64px 40px 72px}
  .ba-hero-inner{grid-template-columns:1fr;gap:44px}
  .ba-problem-grid,.ba-steps,.ba-benefit-grid,.ba-trust-grid{grid-template-columns:1fr 1fr;gap:20px}
  .ba-uc-grid{grid-template-columns:1fr}
  .ba-offer-inner,.ba-faq-inner{grid-template-columns:1fr;gap:44px}
}
@media (max-width:640px){
  .ba-topbar{padding:0 16px}
  .ba-topbar-logo{font-size:16px}
  .ba-topbar-right{gap:10px}
  .ba-topbar-cta{padding:9px 14px;font-size:13px}
  .ba-topbar-cta .cta-full{display:none}
  .ba-topbar-cta .cta-short{display:inline}
  .ba-lang-link{padding:0 12px;min-height:44px}
  .ba-section{padding:60px 20px}
  .ba-hero{padding:52px 20px 60px}
  .ba-problem-grid,.ba-steps,.ba-benefit-grid,.ba-trust-grid{grid-template-columns:1fr;gap:16px}
  .ba-final{padding:70px 20px}
  .ba-footer{padding:28px 20px}
  .ba-footer-inner{flex-direction:column;align-items:flex-start;gap:16px}
  .ba-hero-actions{gap:14px}
}