/* ============================================================
   辉火商城 FireworkShop — 全站共享样式 (XHS 小红书风格)
   ============================================================ */

/* ===== VARIABLES ===== */
:root {
  --red:     #E83428;
  --orange:  #FF6B00;
  --gold:    #FFB300;
  --warm-wh: #FFFAF8;
  --warm-al: #FFF5F0;
  --card-bg: #FFFFFF;
  --dark:    #1C1C1E;
  --dark2:   #2C2C2E;
  --text:    #1C1C1E;
  --text2:   #86868B;
  --border:  rgba(0,0,0,0.06);
  --grad:    linear-gradient(135deg,#E83428 0%,#FF6B00 50%,#FFB300 100%);
  --grad-rev:linear-gradient(135deg,#FFB300 0%,#FF6B00 50%,#E83428 100%);
  --sh-sm:   0 2px 12px rgba(0,0,0,0.06);
  --sh-md:   0 4px 28px rgba(0,0,0,0.08);
  --sh-lg:   0 12px 48px rgba(0,0,0,0.12);
  --sh-fire: 0 8px 32px rgba(232,52,40,0.22);
  --r-sm:    12px;
  --r-md:    18px;
  --r-lg:    24px;
  --r-xl:    32px;
  --r-pill:  999px;
  --ease:    all 0.25s cubic-bezier(.4,0,.2,1);
}

/* ===== RESET ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'PingFang SC',sans-serif;
  color:var(--text);background:var(--warm-wh);line-height:1.65;overflow-x:hidden}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}
button{cursor:pointer;border:none;outline:none;background:transparent}
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:#f5f5f5}
::-webkit-scrollbar-thumb{background:var(--orange);border-radius:3px}

/* ===== TYPOGRAPHY ===== */
h1,h2,h3,h4,h5{font-weight:800;line-height:1.2;letter-spacing:-.02em}

/* ===== LAYOUT ===== */
.container{max-width:1200px;margin:0 auto;padding:0 28px}
.section{padding:96px 0}
.section-light{background:#fff}
.section-warm{background:var(--warm-wh)}
.section-alt{background:var(--warm-al)}
.section-dark{background:var(--dark);color:#fff}

/* ===== SECTION HEADER ===== */
.section-header{text-align:center;margin-bottom:64px}
.section-header.left{text-align:left}
.s-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 16px;border-radius:var(--r-pill);
  background:rgba(232,52,40,0.08);color:var(--red);
  font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  margin-bottom:16px;
}
.section-dark .s-tag{background:rgba(255,179,0,0.12);color:var(--gold)}
.s-tag-dot{width:6px;height:6px;border-radius:50%;background:var(--red);
  animation:pulse 2s ease infinite}
.section-dark .s-tag-dot{background:var(--gold)}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.4)}}
.s-title{font-size:40px;font-weight:900;margin-bottom:14px}
.section-dark .s-title{color:#fff}
.s-sub{font-size:16px;color:var(--text2);max-width:580px;margin:0 auto;line-height:1.75}
.section-header.left .s-sub{margin:0}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;transition:var(--ease);cursor:pointer;
}
.btn-fire{background:var(--grad);color:#fff;box-shadow:var(--sh-fire)}
.btn-fire:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(232,52,40,0.35)}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.5)}
.btn-ghost:hover{background:rgba(255,255,255,0.12);border-color:#fff}
.btn-outline{background:transparent;color:var(--red);border:2px solid var(--red)}
.btn-outline:hover{background:var(--red);color:#fff}
.btn-white{background:#fff;color:var(--red);font-weight:800}
.btn-white:hover{background:var(--warm-al);transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn-lg{padding:16px 40px;font-size:17px}
.btn-sm{padding:9px 20px;font-size:13px}

/* ===== CARDS ===== */
.card{
  background:var(--card-bg);border-radius:var(--r-lg);
  border:1px solid var(--border);box-shadow:var(--sh-sm);
  transition:var(--ease);
}
.card:hover{box-shadow:var(--sh-lg);transform:translateY(-4px)}
.card-dark{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.08)}
.card-dark:hover{border-color:var(--orange);background:rgba(255,107,0,.06)}

/* ===== ICON BOXES ===== */
.ib{
  width:56px;height:56px;border-radius:var(--r-md);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.ib-red{background:rgba(232,52,40,.1)}
.ib-orange{background:rgba(255,107,0,.1)}
.ib-gold{background:rgba(255,179,0,.1)}
.ib-blue{background:rgba(0,130,243,.1)}
.ib-purple{background:rgba(123,47,247,.1)}
.ib-green{background:rgba(0,201,167,.1)}
.ib-teal{background:rgba(0,155,200,.1)}
.ib-pink{background:rgba(255,45,85,.1)}
.ib-sm{width:40px;height:40px;border-radius:var(--r-sm)}
.ib-lg{width:72px;height:72px;border-radius:20px}

/* ===== NAV ===== */
#site-nav{position:fixed;top:0;left:0;right:0;z-index:1000;transition:var(--ease)}
.navbar{
  background:rgba(28,28,30,.92);backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.navbar.at-top{background:transparent;border-bottom-color:transparent}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 28px;
  display:flex;align-items:center;height:68px;gap:32px;
}
.nav-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-logo img{width:36px;height:36px;object-fit:contain}
.nav-logo-text{display:flex;flex-direction:column;line-height:1.15}
.nav-logo-cn{font-size:17px;font-weight:900;color:#fff;letter-spacing:.5px}
.nav-logo-en{font-size:9px;color:var(--gold);font-weight:700;letter-spacing:2px}
.nav-menu{display:flex;align-items:center;gap:2px;flex:1}
.nav-item{position:relative}
.nav-link{
  display:block;padding:8px 14px;border-radius:var(--r-sm);
  font-size:14px;color:rgba(255,255,255,.8);font-weight:500;
  transition:var(--ease);white-space:nowrap;cursor:pointer;
}
.nav-link:hover,.nav-link.active{color:#fff;background:rgba(255,255,255,.1)}
/* dropdown */
.nav-dropdown{
  position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%);
  background:var(--dark2);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-md);padding:8px;min-width:160px;
  box-shadow:var(--sh-lg);opacity:0;visibility:hidden;
  transition:var(--ease);
}
.nav-item:hover .nav-dropdown{opacity:1;visibility:visible}
.nav-dropdown a{
  display:block;padding:10px 16px;border-radius:var(--r-sm);
  font-size:14px;color:rgba(255,255,255,.75);transition:var(--ease);
}
.nav-dropdown a:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;margin-left:auto}
.nav-btn-src{
  padding:8px 18px;border-radius:var(--r-pill);font-size:13px;font-weight:700;
  color:var(--gold);border:1.5px solid var(--gold);transition:var(--ease);
}
.nav-btn-src:hover{background:var(--gold);color:var(--dark)}
.nav-btn-cta{
  padding:8px 18px;border-radius:var(--r-pill);font-size:13px;font-weight:700;
  background:var(--grad);color:#fff;box-shadow:var(--sh-fire);transition:var(--ease);
}
.nav-btn-cta:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(232,52,40,.4)}
.nav-hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px}
.nav-hamburger span{display:block;width:22px;height:2px;background:#fff;border-radius:1px;transition:var(--ease)}
/* 移动端：汉堡展开为全屏菜单（小红书暗色遮罩，配合 fw-components.js 的 .nav-open 类） */
.nav-menu.nav-open{
  position:fixed;top:68px;left:0;right:0;height:calc(100vh - 68px);height:calc(100dvh - 68px);
  display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
  background:rgba(20,20,30,.98);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  padding:20px 22px 40px;gap:2px;z-index:999;overflow-y:auto;
}
.nav-menu.nav-open .nav-item{width:100%}
.nav-menu.nav-open .nav-link{padding:15px 12px;font-size:17px;border-radius:12px;color:rgba(255,255,255,.92)}
.nav-menu.nav-open .nav-dropdown{position:static;transform:none;opacity:1;visibility:visible;
  box-shadow:none;border:none;background:transparent;min-width:0;padding:0 0 6px 14px}
.nav-menu.nav-open .nav-dropdown a{font-size:15px;padding:11px 12px;color:rgba(255,255,255,.7)}

/* ===== FOOTER ===== */
.site-footer{background:var(--dark);padding:72px 0 36px}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1.4fr;
  gap:48px;margin-bottom:56px;
}
.footer-desc{font-size:13px;color:rgba(255,255,255,.45);line-height:1.8;margin:16px 0 24px}
.footer-social{display:flex;gap:10px}
.soc-btn{
  width:36px;height:36px;border-radius:50%;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:center;transition:var(--ease);cursor:pointer;
}
.soc-btn:hover{background:var(--orange);border-color:var(--orange)}
.footer-col h5{font-size:13px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.05em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13px;color:rgba(255,255,255,.4);transition:var(--ease)}
.footer-links a:hover{color:var(--gold)}
.footer-qr{text-align:center}
.footer-qr h5{font-size:13px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.05em}
.qr-wrap{width:110px;height:110px;border-radius:var(--r-md);overflow:hidden;margin:0 auto 10px}
.qr-wrap img{width:100%;height:100%;object-fit:cover}
.qr-label{font-size:11px;color:rgba(255,255,255,.35);line-height:1.5}
.footer-hr{border:none;border-top:1px solid rgba(255,255,255,.06);margin-bottom:28px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.footer-copy{font-size:12px;color:rgba(255,255,255,.25)}
.footer-copy a{color:var(--gold);opacity:.7}
.footer-copy a:hover{opacity:1}
.footer-legal{display:flex;gap:20px}
.footer-legal a{font-size:12px;color:rgba(255,255,255,.25);transition:var(--ease)}
.footer-legal a:hover{color:rgba(255,255,255,.5)}

/* ===== HERO (shared) ===== */
.page-hero{
  padding:160px 0 96px;position:relative;overflow:hidden;
  background:linear-gradient(135deg,#1C1C1E 0%,#2a1a1a 50%,#1C1C1E 100%);
  /* 向上延伸 68px 覆盖固定导航栏后的 body padding，使透明导航可见 */
  margin-top:-68px;
}
.hero-deco{position:absolute;inset:0;pointer-events:none}
.hero-deco::before{
  content:'';position:absolute;width:600px;height:600px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,52,40,.18) 0%,transparent 70%);
  top:-100px;right:-100px;
}
.hero-deco::after{
  content:'';position:absolute;width:400px;height:400px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,179,0,.1) 0%,transparent 70%);
  bottom:-50px;left:-50px;
}
.hero-grid-bg{
  position:absolute;inset:0;opacity:.04;
  background-image:linear-gradient(rgba(255,255,255,1) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,1) 1px,transparent 1px);
  background-size:50px 50px;
}
.hero-inner{
  max-width:1200px;margin:0 auto;padding:0 28px;
  display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;
  position:relative;z-index:1;
}
.hero-inner.centered{grid-template-columns:1fr;text-align:center;max-width:800px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(255,179,0,.12);border:1px solid rgba(255,179,0,.3);
  color:var(--gold);font-size:12px;font-weight:700;margin-bottom:24px;
}
.hero-badge-dot{width:7px;height:7px;border-radius:50%;background:var(--gold);animation:pulse 2s infinite}
.hero-title{font-size:56px;font-weight:900;color:#fff;line-height:1.1;margin-bottom:16px}
.hero-title .fire{background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:20px;color:rgba(255,255,255,.55);font-weight:300;margin-bottom:16px;letter-spacing:.05em}
.hero-desc{font-size:16px;color:rgba(255,255,255,.55);line-height:1.8;margin-bottom:36px;max-width:520px}
.hero-inner.centered .hero-desc{margin-left:auto;margin-right:auto}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px}
.hero-inner.centered .hero-cta{justify-content:center}
.hero-stats{display:flex;gap:48px}
.hero-inner.centered .hero-stats{justify-content:center}
.h-stat-num{font-size:34px;font-weight:900;background:var(--grad);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.h-stat-label{font-size:12px;color:rgba(255,255,255,.4);margin-top:4px}

/* ===== FEATURE GRID ===== */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feat-card{padding:28px 24px}
.feat-card .ib{margin-bottom:18px}
.feat-title{font-size:16px;font-weight:700;margin-bottom:8px;color:var(--text)}
.feat-desc{font-size:13px;color:var(--text2);line-height:1.7}

/* ===== LIST ITEMS ===== */
.check-list{display:flex;flex-direction:column;gap:10px}
.check-item{
  display:flex;align-items:center;gap:12px;
  padding:11px 16px;border-radius:var(--r-sm);
  background:var(--warm-al);font-size:14px;color:var(--text);
  transition:var(--ease);
}
.check-item:hover{background:rgba(232,52,40,.06)}
.check-item svg{flex-shrink:0}

/* ===== TWO-COL LAYOUT ===== */
.two-col{display:grid;grid-template-columns:1fr 1.15fr;gap:64px;align-items:center}
.two-col.rev{grid-template-columns:1.15fr 1fr}

/* ===== MOCK WINDOW ===== */
.mock-win{background:#1e1e30;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.08);box-shadow:var(--sh-lg)}
.mock-bar{
  display:flex;align-items:center;gap:7px;
  padding:12px 18px;background:#252540;border-bottom:1px solid rgba(255,255,255,.06)
}
.dot{width:11px;height:11px;border-radius:50%}
.dot-r{background:#FF5F57}.dot-y{background:#FEBC2E}.dot-g{background:#28C840}
.mock-url{flex:1;background:rgba(255,255,255,.06);border-radius:6px;
  padding:5px 12px;font-size:11px;color:rgba(255,255,255,.35);margin-left:6px}
.mock-body{padding:20px;background:linear-gradient(160deg,#1a1a35 0%,#0d0d1a 100%)}

/* ===== STAT CARDS IN MOCK ===== */
.mock-stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:14px}
.mock-stat{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);
  border-radius:10px;padding:12px}
.mock-stat-label{font-size:9px;color:rgba(255,255,255,.35);margin-bottom:5px}
.mock-stat-val{font-size:18px;font-weight:800;color:#fff}
.mock-stat-trend{font-size:9px;color:#2ecc71;margin-top:2px}
.mock-chart{
  background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);
  border-radius:10px;padding:14px;height:80px;
  display:flex;align-items:flex-end;gap:5px;margin-bottom:12px
}
.mock-bar-item{flex:1;border-radius:3px 3px 0 0;background:var(--grad);opacity:.7}
.mock-rows{display:flex;flex-direction:column;gap:7px}
.mock-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:7px 10px;background:rgba(255,255,255,.03);border-radius:7px;font-size:10px
}
.mock-row-name{color:rgba(255,255,255,.5)}
.mock-row-val{color:#fff;font-weight:600}
.mock-badge{padding:2px 8px;border-radius:20px;font-size:9px}
.mb-ok{background:rgba(46,204,113,.15);color:#2ecc71}
.mb-warn{background:rgba(255,179,0,.15);color:var(--gold)}
.mb-info{background:rgba(0,130,243,.15);color:#0082F3}

/* ===== TABS ===== */
.tab-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:44px;justify-content:center}
.tab-btn{
  padding:10px 22px;border-radius:var(--r-pill);font-size:14px;font-weight:600;
  background:#f0f0f5;color:#666;border:none;cursor:pointer;transition:var(--ease)
}
.tab-btn.active,.tab-btn:hover{background:var(--grad);color:#fff;box-shadow:var(--sh-fire)}
.tab-panel{display:none}.tab-panel.active{display:block}

/* ===== TECH GRID ===== */
.tech-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.tech-item{
  padding:22px 14px;text-align:center;border-radius:var(--r-md);
  background:#fff;border:1px solid var(--border);box-shadow:var(--sh-sm);
  transition:var(--ease)
}
.tech-item:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--sh-md)}
.tech-item .ib{margin:0 auto 12px}
.tech-name{font-size:13px;font-weight:700;color:var(--text)}
.tech-ver{font-size:11px;color:var(--text2);margin-top:3px}

/* ===== FAQ ===== */
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{border-radius:var(--r-lg);background:#fff;border:1px solid var(--border);
  overflow:hidden;box-shadow:var(--sh-sm);transition:var(--ease)}
.faq-item:hover{border-color:rgba(232,52,40,.2)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px;cursor:pointer;font-size:15px;font-weight:700;color:var(--text);
  transition:var(--ease);gap:16px;
}
.faq-q:hover{color:var(--red)}
.faq-ico{
  width:26px;height:26px;border-radius:50%;flex-shrink:0;
  background:rgba(232,52,40,.08);display:flex;align-items:center;justify-content:center;
  transition:var(--ease);
}
.faq-item.open .faq-ico{background:var(--red);transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;font-size:14px;color:var(--text2);line-height:1.8;
  transition:max-height .38s ease,padding .25s ease;padding:0 24px
}
.faq-item.open .faq-a{max-height:250px;padding:0 24px 20px}

/* ===== CTA SECTION ===== */
.cta-section{background:var(--grad);padding:88px 0;position:relative;overflow:hidden}
.cta-section::before{
  content:'';position:absolute;inset:0;
  background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23fff' fill-opacity='.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E")
}
.cta-inner{text-align:center;position:relative;z-index:1}
.cta-title{font-size:44px;font-weight:900;color:#fff;margin-bottom:14px}
.cta-sub{font-size:17px;color:rgba(255,255,255,.85);margin-bottom:36px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ===== PAGE-SPECIFIC: PRODUCT ===== */
.module-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.module-card{padding:22px 18px}
.module-card .ib{margin-bottom:14px}
.module-card-title{font-size:15px;font-weight:700;margin-bottom:6px}
.module-card-desc{font-size:12px;color:var(--text2);line-height:1.65}
.industry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.industry-card{padding:28px 24px;display:flex;gap:16px;align-items:flex-start}
.industry-info h4{font-size:15px;font-weight:700;margin-bottom:6px}
.industry-info p{font-size:13px;color:var(--text2);line-height:1.65}

/* ===== PAGE-SPECIFIC: AI-MALL ===== */
.ai-feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ai-feat-card{padding:32px 28px}
.ai-feat-card .ib{margin-bottom:20px}
.ai-feat-title{font-size:18px;font-weight:800;margin-bottom:10px}
.ai-feat-desc{font-size:14px;color:var(--text2);line-height:1.75}
.steps-row{display:flex;gap:0;align-items:stretch}
.step-item{flex:1;text-align:center;padding:32px 20px;position:relative}
.step-item::after{
  content:'';position:absolute;top:50%;right:0;
  width:1px;height:60%;background:var(--border);transform:translateY(-50%);
}
.step-item:last-child::after{display:none}
.step-num{
  width:44px;height:44px;border-radius:50%;background:var(--grad);
  color:#fff;font-size:17px;font-weight:900;
  display:flex;align-items:center;justify-content:center;margin:0 auto 14px;
}
.step-title{font-size:15px;font-weight:700;margin-bottom:6px}
.step-desc{font-size:13px;color:var(--text2);line-height:1.65}

/* ===== PAGE-SPECIFIC: MICRO ===== */
.perf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.perf-card{text-align:center;padding:32px 20px}
.perf-num{font-size:38px;font-weight:900;background:var(--grad);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.perf-unit{font-size:16px}
.perf-label{font-size:13px;color:var(--text2);margin-top:6px}
.arch-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.arch-card{padding:28px 24px;text-align:center}
.arch-card .ib{margin:0 auto 16px}
.arch-card h4{font-size:16px;font-weight:700;margin-bottom:8px}
.arch-card p{font-size:13px;color:var(--text2);line-height:1.65}
.deploy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.deploy-card{padding:28px 24px}
.deploy-card h4{font-size:16px;font-weight:700;margin-bottom:10px;
  display:flex;align-items:center;gap:10px}
.deploy-card p{font-size:13px;color:var(--text2);line-height:1.7}

/* ===== PAGE-SPECIFIC: S2B2C ===== */
.role-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.role-card{padding:36px 28px;text-align:center}
.role-card .ib{margin:0 auto 20px}
.role-card h3{font-size:20px;font-weight:800;margin-bottom:10px}
.role-card p{font-size:14px;color:var(--text2);line-height:1.7;margin-bottom:20px}
.role-list{display:flex;flex-direction:column;gap:8px;text-align:left}
.role-list li{font-size:13px;color:var(--text2);padding-left:16px;position:relative}
.role-list li::before{content:'·';position:absolute;left:4px;color:var(--orange);font-weight:900}
.flow-row{display:flex;align-items:center;gap:0;background:#fff;border-radius:var(--r-lg);
  border:1px solid var(--border);box-shadow:var(--sh-sm);overflow:hidden}
.flow-step{flex:1;padding:28px 24px;border-right:1px solid var(--border);text-align:center}
.flow-step:last-child{border-right:none}
.flow-num{
  width:36px;height:36px;border-radius:50%;background:var(--grad);color:#fff;
  font-size:15px;font-weight:900;display:flex;align-items:center;justify-content:center;
  margin:0 auto 12px;
}
.flow-title{font-size:15px;font-weight:700;margin-bottom:6px}
.flow-desc{font-size:12px;color:var(--text2)}

/* ===== PAGE-SPECIFIC: SAAS ===== */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.plan-card{padding:36px 28px;border-radius:var(--r-lg);border:2px solid var(--border);
  background:#fff;transition:var(--ease);position:relative;overflow:hidden}
.plan-card:hover{border-color:var(--orange);transform:translateY(-4px);box-shadow:var(--sh-lg)}
.plan-card.featured{border-color:var(--red);box-shadow:0 8px 40px rgba(232,52,40,.15)}
.plan-tag{
  position:absolute;top:20px;right:20px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-size:11px;font-weight:700;
}
.plan-icon{margin-bottom:20px}
.plan-name{font-size:22px;font-weight:900;margin-bottom:8px}
.plan-price{font-size:38px;font-weight:900;color:var(--red);line-height:1;margin-bottom:6px}
.plan-price span{font-size:14px;color:var(--text2);font-weight:400}
.plan-desc{font-size:13px;color:var(--text2);margin-bottom:24px;line-height:1.6}
.plan-feats{display:flex;flex-direction:column;gap:10px;margin-bottom:28px}
.plan-feat{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text)}
.plan-feat-check{width:20px;height:20px;border-radius:50%;
  background:rgba(0,201,167,.1);display:flex;align-items:center;justify-content:center;flex-shrink:0}

/* ===== PAGE-SPECIFIC: QUOTE ===== */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote-card{padding:36px 28px;border-radius:var(--r-lg);border:2px solid var(--border);
  background:#fff;transition:var(--ease);position:relative}
.quote-card:hover{border-color:var(--orange);transform:translateY(-4px)}
.quote-card.hot{border-color:var(--red)}
.quote-hot-tag{
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  padding:4px 16px;border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-size:11px;font-weight:700;white-space:nowrap;
}
.quote-name{font-size:20px;font-weight:900;margin-bottom:8px}
.quote-price{font-size:40px;font-weight:900;line-height:1;margin-bottom:4px}
.quote-price.fire{background:var(--grad);-webkit-background-clip:text;
  -webkit-text-fill-color:transparent;background-clip:text}
.quote-period{font-size:13px;color:var(--text2);margin-bottom:20px}
.quote-hr{border:none;border-top:1px solid var(--border);margin:20px 0}
.quote-feats{display:flex;flex-direction:column;gap:10px}
.quote-feat{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text)}
.compare-table{width:100%;border-collapse:collapse;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-md)}
.compare-table th{background:var(--dark);color:#fff;padding:16px 20px;text-align:left;
  font-size:13px;font-weight:700}
.compare-table th:first-child{border-radius:var(--r-lg) 0 0 0}
.compare-table th:last-child{border-radius:0 var(--r-lg) 0 0}
.compare-table td{padding:14px 20px;font-size:13px;border-bottom:1px solid var(--border);
  background:#fff;color:var(--text)}
.compare-table tr:last-child td{border-bottom:none}
.compare-table tr:last-child td:first-child{border-radius:0 0 0 var(--r-lg)}
.compare-table tr:last-child td:last-child{border-radius:0 0 var(--r-lg) 0}
.ct-yes{color:#2ecc71;font-weight:700}.ct-no{color:#ccc}

/* ===== PAGE-SPECIFIC: ABOUT ===== */
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-nums{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:36px}
.about-num-card{padding:24px 20px;border-radius:var(--r-lg);background:var(--warm-al);text-align:center}
.about-num-val{font-size:36px;font-weight:900;background:var(--grad);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.about-num-label{font-size:13px;color:var(--text2);margin-top:4px}
.timeline{position:relative;padding-left:36px}
.timeline::before{content:'';position:absolute;left:11px;top:0;bottom:0;
  width:2px;background:linear-gradient(to bottom,var(--red),var(--gold))}
.tl-item{position:relative;margin-bottom:32px}
.tl-dot{
  position:absolute;left:-36px;top:4px;
  width:24px;height:24px;border-radius:50%;
  background:var(--grad);border:3px solid var(--warm-wh);
  display:flex;align-items:center;justify-content:center;
}
.tl-year{font-size:13px;font-weight:700;color:var(--red);margin-bottom:4px}
.tl-title{font-size:15px;font-weight:700;margin-bottom:4px}
.tl-desc{font-size:13px;color:var(--text2);line-height:1.65}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.contact-card{padding:28px 24px;display:flex;gap:18px;align-items:flex-start}
.contact-info h4{font-size:16px;font-weight:700;margin-bottom:6px}
.contact-info p{font-size:14px;color:var(--text2)}
.contact-info a{color:var(--red);font-weight:600}
.contact-info a:hover{text-decoration:underline}

/* ===== RESPONSIVE ===== */

/* — 全局防横向溢出 — */
html,body{overflow-x:hidden;max-width:100vw}

/* — 平板 (≤1024px) — */
@media(max-width:1024px){
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .tech-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .perf-grid{grid-template-columns:repeat(2,1fr)}
  .module-grid{grid-template-columns:repeat(2,1fr)}
  .plan-grid,.quote-grid{grid-template-columns:1fr}
  .role-grid{grid-template-columns:1fr}
  .arch-grid{grid-template-columns:1fr}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .deploy-grid{grid-template-columns:1fr}
  .two-col,.two-col.rev{grid-template-columns:1fr;gap:40px}
  .hero-inner{gap:48px}
}

/* — 手机 (≤768px) — */
@media(max-width:768px){
  /* 全局 */
  .container{padding:0 18px}
  .section{padding:56px 0}
  .s-title{font-size:24px;letter-spacing:-.01em}
  .s-sub{font-size:14px}
  .section-header{margin-bottom:40px}
  .btn{padding:11px 22px;font-size:14px}
  .btn-lg{padding:13px 28px;font-size:15px}

  /* 导航 */
  .nav-inner{padding:0 18px;gap:12px}
  .nav-menu{display:none}
  .nav-hamburger{display:flex}
  .nav-actions{gap:8px}
  .nav-btn-src{padding:7px 14px;font-size:12px}
  .nav-btn-cta{padding:7px 14px;font-size:12px}
  .nav-logo-cn{font-size:15px}
  .nav-logo-en{font-size:8px}

  /* Hero 共享 */
  .page-hero{padding:120px 0 64px}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:0 18px}
  .hero-inner.centered{max-width:100%}
  .hero-title{font-size:32px}
  .hero-sub{font-size:16px}
  .hero-desc{font-size:14px;margin-bottom:28px}
  .hero-cta{gap:10px}
  .hero-stats{flex-wrap:wrap;gap:20px 32px}
  .h-stat-num{font-size:26px}
  .hero-visual{display:none}
  .hero-badge{font-size:11px;padding:6px 12px}

  /* 功能卡 */
  .feat-grid{grid-template-columns:1fr}
  .feat-card{padding:22px 18px}

  /* 商城模式 */
  .modes-grid{grid-template-columns:1fr}
  .mode-card{padding:28px 22px}

  /* 全渠道 */
  .ch-layout{grid-template-columns:1fr;gap:40px}
  .ch-list{grid-template-columns:1fr}
  .device-stack{display:none}

  /* 服务卡 */
  .svc-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .svc-card{padding:22px 16px}
  .svc-title{font-size:14px}
  .svc-desc{font-size:12px}

  /* 技术栈 */
  .tech-grid{grid-template-columns:repeat(3,1fr);gap:12px}
  .tech-item{padding:16px 10px}

  /* two-col */
  .two-col,.two-col.rev{grid-template-columns:1fr;gap:32px}

  /* mock window */
  .mock-win{display:none}

  /* 模块 */
  .module-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .module-card{padding:18px 14px}

  /* 行业场景 */
  .industry-grid{grid-template-columns:1fr}

  /* AI 功能 */
  .ai-feat-grid{grid-template-columns:1fr}

  /* 步骤 */
  .steps-row{flex-direction:column}
  .step-item::after{display:none}
  .step-item{padding:20px 16px;border-bottom:1px solid var(--border)}

  /* 流程 */
  .flow-row{flex-direction:column}
  .flow-step{border-right:none;border-bottom:1px solid var(--border);padding:18px 16px}

  /* 性能卡 */
  .perf-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .perf-card{padding:24px 16px}
  .perf-num{font-size:28px}

  /* 架构 */
  .arch-grid{grid-template-columns:1fr}
  .deploy-grid{grid-template-columns:1fr}

  /* 角色卡 */
  .role-grid{grid-template-columns:1fr}

  /* 套餐 & 报价 */
  .plan-grid,.quote-grid{grid-template-columns:1fr;gap:32px}
  .plan-card,.quote-card{padding:28px 22px}
  .quote-price{font-size:32px}
  .compare-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;font-size:12px}
  .compare-table th,.compare-table td{padding:10px 12px;white-space:nowrap}

  /* 关于 */
  .about-intro{grid-template-columns:1fr;gap:32px}
  .about-nums{grid-template-columns:repeat(2,1fr);gap:12px}
  .about-num-card{padding:18px 14px}
  .about-num-val{font-size:28px}
  .contact-grid{grid-template-columns:1fr;gap:12px}
  .contact-card{padding:20px 18px}

  /* CTA */
  .cta-section{padding:60px 0}
  .cta-title{font-size:26px}
  .cta-sub{font-size:14px}
  .cta-actions{flex-direction:column;align-items:center;gap:10px}

  /* 页脚 */
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding:48px 0 28px}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center}

  /* FAQ */
  .faq-list{max-width:100%}
  .faq-q{padding:16px 18px;font-size:14px}
  .faq-a{font-size:13px}
  .faq-item.open .faq-a{padding:0 18px 16px}

  /* check-list */
  .check-list{gap:8px}
  .check-item{padding:10px 14px;font-size:13px}
}

/* — 小手机 (≤480px) — */
@media(max-width:480px){
  .s-title{font-size:22px}
  .hero-title{font-size:28px}
  .svc-grid{grid-template-columns:1fr}
  .module-grid{grid-template-columns:1fr}
  .tech-grid{grid-template-columns:repeat(2,1fr)}
  .about-nums{grid-template-columns:repeat(2,1fr)}
  .perf-grid{grid-template-columns:1fr}
  .hero-stats{gap:16px 28px}
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.fade-up{animation:fadeUp .55s ease forwards}
.delay-1{animation-delay:.1s}.delay-2{animation-delay:.2s}
.delay-3{animation-delay:.3s}.delay-4{animation-delay:.4s}