/* ============================================================
   TTGEO V10
   Design language: Editorial · Refined · Generous whitespace
   ============================================================ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:       #FCFCFA;
  --bg-warm:  #F8F5F1;
  --surface:  #FFFFFF;
  --border:   #E8E4DE;
  --border2:  #D5CFC7;
  --ink:      #171412;
  --ink2:     #3D3832;
  --gray:     #706B65;
  --gray2:    #A8A29A;
  --gray3:    #D5D0CA;
  --accent:   #1A1A1A;
  --accent2:  #404040;
  --highlight: #BF5B2C;
  --hl-bg:    #FDF6F1;
  --green:    #3B6B4C;

  --r1:4px;--r2:8px;--r3:16px;--r4:24px;
  --sh1:0 1px 3px rgba(0,0,0,.03);
  --sh2:0 4px 20px rgba(0,0,0,.05);
  --sh3:0 12px 44px rgba(0,0,0,.08);
  --mw:1080px;
  scroll-behavior:smooth;
}

html{font-size:16px;line-height:1.5;-webkit-text-size-adjust:100%}
body{
  font-family:'Inter','Noto Sans SC',-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink2);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}ul{list-style:none}img{max-width:100%;display:block}

/* ========== CONTAINER ========== */
.container{max-width:var(--mw);margin:0 auto;padding:0 36px}

/* ========== TYPE ========== */
.label{
  font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--highlight);margin-bottom:20px;display:inline-block;
}
.section-title{
  font-size:clamp(2.1rem,4.2vw,2.8rem);font-weight:800;
  letter-spacing:-.05em;line-height:1.08;color:var(--ink);margin-bottom:18px;
}
.section-sub{font-size:1.1rem;color:var(--gray);max-width:500px;line-height:1.75}

/* ========== BUTTONS ========== */
.btn{
  padding:16px 32px;border-radius:60px;font-weight:600;font-size:15px;
  border:none;cursor:pointer;transition:all .3s;display:inline-flex;align-items:center;gap:8px;
}
.btn-dark{background:var(--accent);color:#fff}
.btn-dark:hover{background:var(--accent2);transform:translateY(-1px);box-shadow:0 8px 28px rgba(0,0,0,.15)}
.btn-outline{background:transparent;color:var(--ink2);border:1.5px solid var(--border2)}
.btn-outline:hover{border-color:var(--ink);background:var(--bg-warm)}
.btn-lg{padding:19px 40px;font-size:15px}

/* ========== NAV ========== */
.navbar{display:flex;align-items:center;justify-content:space-between;padding:18px 0;gap:20px}
.logo{font-size:40px;font-weight:900;color:var(--ink);display:flex;align-items:center;gap:6px}
.logo span:first-child{letter-spacing:.08em}
.logo span:last-child{letter-spacing:.03em}
.nav-links{display:flex;align-items:center;gap:32px;font-weight:500;font-size:14px}
.nav-links a{color:var(--gray);transition:color .2s}
.nav-links a:hover{color:var(--ink)}
.nav-cta{background:var(--accent);color:#fff!important;padding:10px 20px;border-radius:60px;font-size:13px;font-weight:600}
.nav-cta:hover{background:var(--accent2)!important;color:#fff!important}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px;background:none;border:none}
.hamburger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:1px;transition:all .3s}
.hamburger.active span:nth-child(1){transform:rotate(45deg)translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg)translate(5px,-5px)}

/* ================================================================
   HERO — asymmetric, text-heavy left, visual right
   ================================================================ */
.hero{background:linear-gradient(175deg, #FCFCFA 0%, #F8F5F1 40%, #F3EFE9 100%);border-bottom:1px solid var(--border)}
.hero .container{padding-top:30px;padding-bottom:90px}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:80px;align-items:center}

.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--highlight);margin-bottom:28px;
}
.hero-badge::before{content:'';width:6px;height:6px;background:#22C55E;border-radius:50%;animation:pulse 2.5s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}

.hero-title{font-size:clamp(2.4rem,5.5vw,3.4rem);font-weight:900;line-height:1.04;letter-spacing:-.06em;color:var(--ink);margin-bottom:22px}
.hero-title em{font-style:normal;color:var(--highlight)}
.hero-desc{font-size:1.08rem;color:var(--gray);margin-bottom:36px;max-width:460px;line-height:1.78}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:52px}
.hero-metrics{display:flex;gap:48px;padding-top:24px;border-top:1px solid var(--border)}
.hero-metrics .hm-num{font-size:1.8rem;font-weight:900;color:var(--ink);letter-spacing:-.04em}
.hero-metrics .hm-label{font-size:13px;color:var(--gray2);margin-top:4px}

/* Doubao search demos — cleaner */
.db-demos{display:flex;flex-direction:column;gap:12px}
.db-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r3);
  padding:18px 22px;transition:all .3s;box-shadow:var(--sh1);
}
.db-card:hover{transform:translateY(-1px);box-shadow:var(--sh2)}
.db-card .db-q{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:10px;display:flex;align-items:center;gap:8px}
.db-card .db-q .db-av{width:22px;height:22px;border-radius:5px;background:var(--highlight);display:flex;align-items:center;justify-content:center;color:#fff;font-size:10px;font-weight:800;flex-shrink:0}
.db-card .db-a{padding:10px 14px;background:var(--hl-bg);border-radius:var(--r2);font-size:15px;color:var(--ink2);line-height:1.6;border-left:2px solid var(--highlight)}
.db-card .db-a strong{color:var(--highlight)}
.db-card .db-a .db-sub{font-size:13px;color:var(--gray);margin-top:2px}

/* ================================================================
   GEO — 3 steps, editorial style
   ================================================================ */
.geo-section{padding:120px 0}
.geo-header{text-align:center;margin-bottom:72px}
.geo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;max-width:960px;margin:0 auto}
.geo-card{text-align:center;padding:52px 32px;position:relative}
.geo-card .gc-num{
  font-size:4.5rem;font-weight:900;color:var(--bg-warm);line-height:1;
  position:absolute;top:0;left:50%;transform:translateX(-50%);pointer-events:none;z-index:0;
}
.geo-card .gc-icon{width:44px;height:44px;margin:0 auto 22px;position:relative;z-index:1;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--bg-warm)}
.geo-card .gc-icon svg{width:22px;height:22px;color:var(--ink2)}
.geo-card h3{font-size:1.45rem;font-weight:700;margin-bottom:14px;color:var(--ink);position:relative;z-index:1}
.geo-card p{font-size:1.12rem;color:var(--gray);line-height:1.72;position:relative;z-index:1;max-width:300px;margin:0 auto}

/* ================================================================
   DIVIDER
   ================================================================ */
.divider{border:none;border-top:1px solid var(--border);margin:0}

/* ================================================================
   IP — dark section, testimonial style
   ================================================================ */
.ip-section{background:var(--ink);padding:120px 0;position:relative;overflow:hidden}
.ip-section::after{
  content:'';position:absolute;top:-100px;right:-60px;width:350px;height:350px;
  background:radial-gradient(circle, rgba(191,91,44,.1) 0%, transparent 55%);
  border-radius:50%;pointer-events:none;
}
.ip-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start;position:relative;z-index:2}
.ip-left .label{color:var(--highlight)}
.ip-left h2{font-size:clamp(2rem,3.8vw,2.5rem);font-weight:800;color:#fff;letter-spacing:-.04em;line-height:1.13;margin-bottom:18px}
.ip-left .ip-desc{color:rgba(255,255,255,.42);font-size:1.1rem;line-height:1.75;margin-bottom:32px}
.ip-points{display:grid;gap:12px}
.ip-point{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.5);font-size:16px}
.ip-point .ip-dot{width:5px;height:5px;border-radius:50%;background:var(--highlight);flex-shrink:0}

/* Comparison cards */
.ip-compare{display:flex;flex-direction:column;gap:1px;background:rgba(255,255,255,.05);border-radius:var(--r3);overflow:hidden}
.ip-compare .ipc-head{display:grid;grid-template-columns:1fr 1fr;font-size:10px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;padding:10px 20px;color:rgba(255,255,255,.15);background:rgba(255,255,255,.02)}
.ip-compare .ipc-head span:last-child{color:var(--highlight);text-align:right}
.ip-compare .ipc-row{display:grid;grid-template-columns:1fr 1fr}
.ip-compare .ipc-bad{padding:15px 20px;font-size:15px;color:rgba(255,255,255,.28);line-height:1.5;display:flex;align-items:flex-start;gap:6px;background:rgba(255,255,255,.01)}
.ip-compare .ipc-bad::before{content:'—';color:rgba(255,255,255,.1);flex-shrink:0}
.ip-compare .ipc-good{padding:15px 20px;font-size:15px;color:rgba(255,255,255,.78);line-height:1.5;font-weight:600;display:flex;align-items:flex-start;gap:6px;background:rgba(191,91,44,.06)}
.ip-compare .ipc-good::before{content:'✓';color:var(--highlight);font-weight:800;flex-shrink:0}

/* ================================================================
   CASES — 2x2 grid, editorial cards
   ================================================================ */
.cases-section{padding:120px 0}
.cases-header{text-align:center;margin-bottom:72px}
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.case-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r4);
  padding:40px 34px;transition:all .4s cubic-bezier(.22,.61,.36,1);
  box-shadow:var(--sh1);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh3)}
.case-card .cc-top{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.case-card .cc-icon{
  width:44px;height:44px;border-radius:var(--r1);display:flex;align-items:center;
  justify-content:center;flex-shrink:0;
  background:var(--ink);color:#fff;
}
.case-card .cc-icon svg{width:20px;height:20px}
.case-card .cc-name{font-weight:700;font-size:1.25rem;color:var(--ink)}
.case-card .cc-loc{font-size:14px;color:var(--gray2)}
.case-card .cc-kpi{font-size:16px;font-weight:700;color:var(--highlight);margin-bottom:12px}
.case-card .cc-desc{font-size:1.05rem;color:var(--gray);line-height:1.7;margin-bottom:18px}
.case-card .cc-kws{display:flex;gap:6px;flex-wrap:wrap}
.case-card .cc-kw{padding:5px 14px;border:1px solid var(--border);border-radius:60px;font-size:13px;color:var(--gray);font-weight:500}

/* ================================================================
   COMPARISON — two large side-by-side panels
   ================================================================ */
.comp-section{background:var(--bg-warm);padding:120px 0}
.comp-header{text-align:center;margin-bottom:72px}
.comp-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;max-width:880px;margin:0 auto}
.comp-col{border-radius:var(--r4);overflow:hidden;box-shadow:var(--sh2)}
.comp-col .cch{padding:26px 32px;font-weight:700;font-size:19px}
.comp-col.seo .cch{background:var(--border2);color:var(--ink2)}
.comp-col.geo .cch{background:var(--ink);color:#fff}
.comp-col .ccb{background:var(--surface);padding:28px 32px 16px}
.comp-col .ccb li{padding:15px 0;border-bottom:1px solid var(--border);font-size:16px;color:var(--ink2);display:flex;align-items:center;gap:10px;line-height:1.5}
.comp-col .ccb li:last-child{border-bottom:none}
.comp-col.seo .ccb li::before{content:'×';color:var(--gray3);font-weight:700;font-size:14px;flex-shrink:0}
.comp-col.geo .ccb li::before{content:'✓';color:var(--highlight);font-weight:800;font-size:14px;flex-shrink:0}

/* ================================================================
   INDUSTRIES — clean line-icon grid
   ================================================================ */
.ind-section{padding:120px 0}
.ind-header{text-align:center;margin-bottom:72px}
.ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border-radius:var(--r4);overflow:hidden}
.ind-card{
  background:var(--surface);padding:40px 24px;text-align:center;
  transition:all .35s;cursor:default;position:relative;
}
.ind-card svg{width:32px;height:32px;margin:0 auto 14px;display:block;color:var(--gray2);transition:all .35s}
.ind-card .ind-name{font-size:14px;font-weight:600;color:var(--ink2);transition:color .35s}
.ind-card:hover{background:var(--ink)}
.ind-card:hover svg{color:#fff;transform:scale(1.1)}
.ind-card:hover .ind-name{color:#fff}

/* ================================================================
   PRICING
   ================================================================ */
.price-section{padding:120px 0;background:var(--ink);position:relative;overflow:hidden}
.price-section::before{
  content:'';position:absolute;top:-120px;right:-80px;width:400px;height:400px;
  background:radial-gradient(circle, rgba(191,91,44,.1) 0%, transparent 55%);
  border-radius:50%;pointer-events:none;
}
.price-header{text-align:center;margin-bottom:72px;position:relative;z-index:2}
.price-section .label{color:var(--highlight)}
.price-section .section-title{color:#fff}
.price-section .section-sub{color:rgba(255,255,255,.45)}
.price-layout{max-width:680px;margin:0 auto;position:relative;z-index:2}
.price-card{
  background:var(--surface);border-radius:var(--r4);
  padding:56px 56px 48px;box-shadow:0 24px 64px rgba(0,0,0,.3);
}
.price-card .pc-badge{display:inline-block;padding:6px 16px;background:var(--ink);color:#fff;border-radius:60px;font-size:12px;font-weight:700;margin-bottom:32px;letter-spacing:.04em}
.price-card .pc-amount{font-size:4.2rem;font-weight:900;color:var(--ink);letter-spacing:-.07em;line-height:1;margin-bottom:10px}
.price-card .pc-amount sub{font-size:1.05rem;font-weight:500;color:var(--gray2)}
.price-card .pc-note{font-size:16px;color:var(--gray2);margin-bottom:40px}
.price-card .pc-features{display:grid;grid-template-columns:1fr 1fr;gap:0 36px;margin-bottom:44px}
.price-card .pc-features li{font-size:15px;color:var(--ink2);padding:12px 0;border-bottom:1px solid var(--bg-warm);display:flex;align-items:center;gap:8px}
.price-card .pc-features li:nth-last-child(-n+2){border-bottom:none}
.price-card .pc-features li .pf-check{color:var(--highlight);font-weight:700;font-size:12px;flex-shrink:0}
.price-card .pc-features li .li-tag{margin-left:auto;font-size:10px;font-weight:700;padding:4px 10px;border-radius:50px;background:var(--hl-bg);color:var(--highlight)}

.price-bottom{display:flex;align-items:center;gap:24px;padding-top:28px;border-top:1px solid var(--border)}
.price-bottom .qr-box{
  width:72px;height:72px;border-radius:10px;
  overflow:hidden;flex-shrink:0;
}
.price-bottom .qr-info{flex:1}
.price-bottom .qr-info .qr-name{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:2px}
.price-bottom .qr-info .qr-detail{font-size:13px;color:var(--gray2);line-height:1.5}

/* ================================================================
   FAQ
   ================================================================ */
.faq-section{padding:120px 0}
.faq-header{text-align:center;margin-bottom:72px}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;max-width:880px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r3);
  padding:34px 32px;transition:all .25s;box-shadow:var(--sh1);
}
.faq-item:hover{border-color:var(--ink);box-shadow:var(--sh2)}
.faq-q{font-family:'PingFang SC','Microsoft YaHei',sans-serif;font-size:1.05rem;font-weight:600;margin-bottom:12px;color:var(--ink);display:flex;align-items:flex-start;gap:12px;letter-spacing:.03em;line-height:1.5}
.faq-q::before{content:'Q';font-size:15px;font-weight:800;color:var(--highlight);flex-shrink:0;margin-top:-1px;font-family:'Inter',sans-serif}
.faq-a{font-family:'PingFang SC','Microsoft YaHei',sans-serif;font-size:1rem;color:var(--gray);line-height:1.82;padding-left:27px;font-weight:350;letter-spacing:.05em}

/* ================================================================
   CTA
   ================================================================ */
.cta-band{
  background:var(--ink);border-radius:var(--r4);padding:72px 52px;text-align:center;
  margin:80px 0;position:relative;overflow:hidden;
}
.cta-band::before{
  content:'';position:absolute;top:-60px;right:-40px;width:280px;height:280px;
  background:radial-gradient(circle, rgba(191,91,44,.12) 0%, transparent 60%);
  border-radius:50%;pointer-events:none;
}
.cta-band h2{font-size:clamp(1.7rem,3vw,2.2rem);font-weight:800;color:#fff;letter-spacing:-.05em;margin-bottom:14px;position:relative;z-index:2}
.cta-band p{color:rgba(255,255,255,.4);max-width:440px;margin:0 auto 30px;font-size:16px;line-height:1.6;position:relative;z-index:2}
.cta-band .btn{position:relative;z-index:2}

/* ================================================================
   FOOTER
   ================================================================ */
.footer-wrap{border-top:1px solid var(--border);padding:56px 0 28px}
.footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:40px;margin-bottom:32px}
.footer-left{max-width:260px}
.footer-logo{font-size:30px;font-weight:900;color:var(--ink);margin-bottom:8px;display:flex;align-items:center;gap:6px}
.footer-logo span:first-child{letter-spacing:.1em}
.footer-left p{font-size:13px;color:var(--gray2);line-height:1.7}
.footer-col{display:flex;flex-direction:column;gap:5px}
.footer-col h4{font-size:13px;font-weight:700;margin-bottom:6px;color:var(--ink)}
.footer-col a{font-size:13px;color:var(--gray);transition:color .2s}
.footer-col a:hover{color:var(--highlight)}
.footer-bot{border-top:1px solid var(--border);padding-top:22px;text-align:center;font-size:12px;color:var(--gray2)}

/* Side */
.side-btns{position:fixed;right:16px;bottom:80px;z-index:99;display:flex;flex-direction:column;gap:8px}
.side-btns a{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#1a1a1a;color:#fff;font-size:17px;border:none;transition:all .25s;box-shadow:0 4px 20px rgba(0,0,0,.25)}
.side-btns a:hover{background:var(--highlight);border-color:var(--highlight);transform:translateY(-2px);box-shadow:0 6px 20px rgba(191,91,44,.3)}

[data-reveal]{opacity:0;transform:translateY(32px);transition:all .7s cubic-bezier(.22,.61,.36,1)}
[data-reveal].in{opacity:1;transform:translateY(0)}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media(max-width:860px){
  .hero-grid,.ip-grid{grid-template-columns:1fr;gap:52px}
  .geo-grid{grid-template-columns:1fr 1fr}
  .comp-grid{grid-template-columns:1fr;max-width:420px}
  .case-grid{grid-template-columns:1fr}
  .ind-grid{grid-template-columns:repeat(3,1fr)}
  .faq-grid{grid-template-columns:1fr}
  .ip-compare .ipc-row{grid-template-columns:1fr}
  .ip-compare .ipc-head{display:none}
}
@media(max-width:600px){
  .container{padding:0 20px}
  .hero-title{font-size:2.1rem}
  .section-title{font-size:1.9rem}
  .geo-grid{grid-template-columns:1fr;max-width:320px}
  .ind-grid{grid-template-columns:repeat(3,1fr)}
  .ind-card{padding:28px 10px}
  .nav-links{display:none;flex-direction:column;width:100%;gap:14px;padding:8px 0}
  .nav-links.open{display:flex}
  .hamburger{display:flex}
  .hero-actions .btn{width:100%;justify-content:center}
  .price-card{padding:40px 28px}
  .price-card .pc-amount{font-size:2.8rem}
  .price-card .pc-features{grid-template-columns:1fr;gap:0}
  .price-card .pc-features li:nth-last-child(-n+2){border-bottom:1px solid var(--bg-warm)}
  .price-card .pc-features li:last-child{border-bottom:none}
  .price-bottom{flex-direction:column;text-align:center}
  .cta-band{padding:48px 24px}
  .hero-metrics{gap:28px}
  .hero-metrics .hm-num{font-size:1.3rem}
}