/* ===== Reset & Base ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;background:#0a0f0e;color:#e2e8f0;line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{list-style:none}

/* ===== Variables ===== */
:root{
  --primary:#10b981;--primary-dark:#059669;--primary-light:#34d399;
  --accent:#f59e0b;--bg:#0a0f0e;--bg-card:#111714;--bg-elevated:#161e1b;
  --border:#243331;--text:#e2e8f0;--text-muted:#94a3b8;--text-bright:#f1f5f9;
  --radius:14px;--radius-sm:8px;--max-width:1200px;--header-h:64px;
}

/* ===== Animated Background ===== */
body::before{
  content:'';position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(circle at 15% 20%,rgba(16,185,129,.08) 0%,transparent 40%),
    radial-gradient(circle at 85% 70%,rgba(245,158,11,.05) 0%,transparent 35%),
    radial-gradient(circle at 50% 50%,rgba(16,185,129,.04) 0%,transparent 50%);
  animation:bgFloat 20s ease-in-out infinite alternate;
}
body::after{
  content:'';position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:radial-gradient(circle,rgba(255,255,255,.015) 1px,transparent 1px);
  background-size:32px 32px;
}
@keyframes bgFloat{
  0%{background-position:0% 0%,0% 0%,0% 0%}
  50%{background-position:5% 3%,-3% -2%,2% -3%}
  100%{background-position:8% 5%,-5% -4%,-3% 5%}
}
.bg-orb{position:fixed;border-radius:50%;filter:blur(80px);z-index:-2;pointer-events:none;opacity:.5}
.bg-orb-1{width:500px;height:500px;top:-100px;left:-100px;background:rgba(16,185,129,.06);animation:orbFloat1 15s ease-in-out infinite alternate}
.bg-orb-2{width:400px;height:400px;bottom:-50px;right:-100px;background:rgba(245,158,11,.04);animation:orbFloat2 18s ease-in-out infinite alternate}
.bg-orb-3{width:300px;height:300px;top:40%;right:30%;background:rgba(16,185,129,.05);animation:orbFloat3 12s ease-in-out infinite alternate}
@keyframes orbFloat1{0%{transform:translate(0,0)}100%{transform:translate(40px,30px)}}
@keyframes orbFloat2{0%{transform:translate(0,0)}100%{transform:translate(-30px,-20px)}}
@keyframes orbFloat3{0%{transform:translate(0,0)}100%{transform:translate(20px,-25px)}}

/* ===== Layout ===== */
.container{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}
section{padding:5rem 0;position:relative}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(10,15,14,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:var(--header-h);display:flex;align-items:center}
.site-header .container{display:flex;align-items:center;justify-content:space-between;width:100%}
.logo{display:flex;align-items:center;gap:.5rem;font-size:1.15rem;font-weight:800;letter-spacing:-.02em}
.logo-img{width:32px;height:32px;border-radius:8px;flex-shrink:0;object-fit:cover}
.logo span{color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:.25rem}
.main-nav a{padding:.5rem .9rem;border-radius:var(--radius-sm);font-size:.875rem;color:var(--text-muted);transition:color .15s,background .15s}
.main-nav a:hover,.main-nav a.active{color:var(--text-bright);background:var(--bg-elevated)}
.header-cta{background:var(--primary);color:#0a0f0e;font-weight:700;font-size:.875rem;padding:.55rem 1.2rem;border-radius:var(--radius-sm);transition:background .15s,transform .1s}
.header-cta:hover{background:var(--primary-light)}
.header-cta:active{transform:scale(.97)}
.menu-toggle{display:none;font-size:1.3rem;padding:.4rem}

/* ===== Nav Dropdown ===== */
.nav-dropdown{position:relative}
.nav-dropdown-toggle{padding:.5rem .9rem;border-radius:var(--radius-sm);font-size:.875rem;color:var(--text-muted);transition:color .15s,background .15s;display:flex;align-items:center;gap:.25rem}
.nav-dropdown-toggle:hover{color:var(--text-bright);background:var(--bg-elevated)}
.nav-dropdown-toggle .caret{font-size:.6rem;opacity:.6;transition:transform .2s;display:inline-block}
.nav-dropdown-menu{position:absolute;top:100%;left:0;min-width:140px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.4rem;opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .15s,transform .15s,visibility .15s;z-index:110;box-shadow:0 8px 24px rgba(0,0,0,.4)}
.nav-dropdown:hover .nav-dropdown-menu,.nav-dropdown.open .nav-dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav-dropdown:hover .caret,.nav-dropdown.open .caret{transform:rotate(180deg)}
.nav-dropdown-menu a{display:block;padding:.45rem .7rem;border-radius:6px;font-size:.8rem;color:var(--text-muted);transition:color .15s,background .15s;white-space:nowrap}
.nav-dropdown-menu a:hover{color:var(--primary);background:var(--bg-elevated)}

/* ===== Hero ===== */
.hero{padding:calc(var(--header-h) + 3.5rem) 0 4rem}
.hero .container{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:.4rem;background:var(--bg-card);border:1px solid var(--border);padding:.35rem .8rem;border-radius:999px;font-size:.75rem;color:var(--text-muted);margin-bottom:1.5rem}
.hero-tag .dot{width:6px;height:6px;background:var(--primary);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{font-size:clamp(1.75rem,4vw,2.75rem);font-weight:800;letter-spacing:-.03em;line-height:1.25;margin-bottom:1rem}
.hero h1 .hl{background:linear-gradient(135deg,var(--primary-light),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{font-size:1rem;color:var(--text-muted);max-width:30rem;margin-bottom:2rem}
.hero-actions{display:flex;gap:.75rem;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.7rem 1.5rem;border-radius:var(--radius-sm);font-weight:700;font-size:.875rem;transition:all .15s}
.btn-primary{background:var(--primary);color:#0a0f0e}
.btn-primary:hover{background:var(--primary-light)}
.btn-outline{border:1px solid var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}

/* Hero visual */
.hero-visual{position:relative;height:340px;display:flex;align-items:center;justify-content:center}
.hero-img{width:100%;max-width:380px;height:auto;border-radius:var(--radius);box-shadow:0 8px 40px rgba(16,185,129,.12);animation:heroFloat 6s ease-in-out infinite alternate}
@keyframes heroFloat{0%{transform:translateY(0)}100%{transform:translateY(-10px)}}

/* ===== Stats Bar ===== */
.stats-bar{background:linear-gradient(180deg,var(--bg-card) 0%,var(--bg) 100%);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:2.5rem 0;position:relative;overflow:hidden}
.stats-bar::before{content:'';position:absolute;top:0;left:50%;width:200px;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent);transform:translateX(-50%)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;text-align:center}
.stat-item .num{font-size:clamp(1.5rem,3vw,2rem);font-weight:800;color:var(--primary)}
.stat-item .num .unit{font-size:.9rem;color:var(--text-muted);font-weight:600;margin-left:.2rem}
.stat-item .label{font-size:.75rem;color:var(--text-muted);margin-top:.25rem}

/* ===== Section Heads ===== */
.section-head{text-align:center;margin-bottom:3rem}
.section-tag{display:inline-block;font-size:.75rem;font-weight:700;color:var(--primary);letter-spacing:.1em;text-transform:uppercase;margin-bottom:.75rem;background:rgba(16,185,129,.08);padding:.25rem .75rem;border-radius:999px;border:1px solid rgba(16,185,129,.15)}
.section-head h2{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:800;letter-spacing:-.02em;margin-bottom:.75rem;background:linear-gradient(135deg,var(--text-bright) 0%,var(--primary-light) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.section-head p{color:var(--text-muted);max-width:36rem;margin:0 auto}

/* ===== Channel Cards ===== */
#omni-channel{background:var(--bg)}
.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem}
.channel-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem 1.25rem;transition:border-color .2s,transform .2s;position:relative;overflow:hidden}
.channel-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 4px 20px rgba(16,185,129,.08)}
.channel-card::before{content:'';position:absolute;top:0;left:0;width:3px;height:0;background:var(--primary);transition:height .2s}
.channel-card:hover::before{height:100%}
.channel-icon{
  width:52px;height:52px;border-radius:14px;margin-bottom:1rem;
  background:linear-gradient(135deg,rgba(16,185,129,.12),rgba(245,158,11,.08));
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  line-height:1;
}
.icon-svg{width:26px;height:26px;stroke:currentColor;fill:none;flex-shrink:0}
.channel-card h3{font-size:.95rem;font-weight:700;margin-bottom:.5rem;color:var(--text-bright)}
.channel-card p{font-size:.8rem;color:var(--text-muted);line-height:1.6}
.channel-card.is-summary{background:linear-gradient(135deg,rgba(16,185,129,.08),rgba(245,158,11,.05));border-color:rgba(16,185,129,.2)}
.channel-card.is-summary h3{color:var(--primary)}
.channel-card.is-summary p{color:var(--text)}

/* ===== Activity Cards ===== */
#marketing-tools{background:var(--bg-card)}
.activity-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.activity-card{background:var(--bg-elevated);border-radius:var(--radius);padding:1.75rem;position:relative;overflow:hidden;border:1px solid var(--border);transition:border-color .2s}
.activity-card:hover{border-color:var(--primary);box-shadow:0 4px 24px rgba(16,185,129,.06)}
.activity-card::after{content:'';position:absolute;bottom:0;left:0;height:3px;width:100%;background:linear-gradient(90deg,var(--primary),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .2s}
.activity-card:hover::after{transform:scaleX(1)}
.activity-head{display:flex;align-items:center;gap:.75rem;margin-bottom:1rem}
.activity-num{width:36px;height:36px;border-radius:50%;flex-shrink:0;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem;color:#0a0f0e}
.activity-card h3{font-size:1.05rem;font-weight:700;color:var(--text-bright)}
.activity-card p{font-size:.85rem;color:var(--text-muted);line-height:1.7}
.activity-card .tag{display:inline-block;margin-top:1rem;padding:.2rem .6rem;border-radius:999px;font-size:.65rem;font-weight:600;background:var(--bg);color:var(--text-muted);border:1px solid var(--border)}

/* ===== Solutions ===== */
#solutions{background:var(--bg)}
.solution-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem}
.payment-grid{grid-template-columns:repeat(3,1fr)}
.solution-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem 1.25rem;transition:border-color .2s}
.solution-card:hover{border-color:var(--primary);box-shadow:0 4px 20px rgba(16,185,129,.06)}
.solution-card .icon{font-size:1.75rem;margin-bottom:.75rem}
.solution-card h3{font-size:.95rem;font-weight:700;margin-bottom:.4rem;color:var(--text-bright)}
.solution-card p{font-size:.8rem;color:var(--text-muted);line-height:1.6}

/* ===== About ===== */
#about{background:var(--bg-card)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.about-text h2{font-size:clamp(1.4rem,2.5vw,1.8rem);font-weight:800;margin-bottom:1rem}
.about-text p{color:var(--text-muted);margin-bottom:1rem;line-height:1.8}
.about-info{display:flex;flex-direction:column;gap:.75rem}
.info-row{display:flex;align-items:flex-start;gap:.75rem;padding:.75rem 1rem;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-sm)}
.info-row .label{font-size:.75rem;color:var(--text-muted);flex-shrink:0;min-width:5rem}
.info-row .value{font-size:.85rem;color:var(--text-bright);font-weight:500}

/* ===== FAQ ===== */
#faq{background:var(--bg)}
.faq-list{max-width:48rem;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:.5rem;background:var(--bg-card);overflow:hidden}
.faq-q{width:100%;text-align:left;padding:1rem 1.25rem;display:flex;justify-content:space-between;align-items:center;font-size:.9rem;font-weight:600;color:var(--text-bright)}
.faq-q .icon{font-size:1.1rem;color:var(--primary);transition:transform .2s;flex-shrink:0;margin-left:1rem}
.faq-item.open .faq-q .icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-item.open .faq-a{max-height:300px}
.faq-a p{padding:0 1.25rem 1rem;font-size:.85rem;color:var(--text-muted);line-height:1.7}

/* ===== Contact ===== */
#contact{background:var(--bg-card)}
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:2rem;align-items:start}
.contact-form{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius);padding:2rem}
.form-group{margin-bottom:1.25rem}
.form-group label{display:block;font-size:.8rem;color:var(--text-muted);margin-bottom:.4rem;font-weight:500}
.form-group input,.form-group textarea,.form-group select{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.6rem .75rem;color:var(--text);font-size:.875rem;transition:border-color .15s,box-shadow .15s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(16,185,129,.15)}
.form-group input:focus-visible,.form-group textarea:focus-visible,.form-group select:focus-visible{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(16,185,129,.15)}
.form-group input.error,.form-group textarea.error{border-color:#ef4444}
.form-error{font-size:.7rem;color:#ef4444;margin-top:.25rem;display:none}
.form-error.show{display:block}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}
.form-submit{width:100%;background:var(--primary);color:#0a0f0e;font-weight:700;font-size:.9rem;padding:.75rem;border-radius:var(--radius-sm);transition:background .15s,transform .1s}
.form-submit:hover{background:var(--primary-light)}
.form-submit:active{transform:scale(.98)}
.form-submit:disabled{opacity:.6;cursor:not-allowed}
.form-success{background:rgba(16,185,129,.1);border:1px solid rgba(16,185,129,.3);border-radius:var(--radius-sm);padding:.75rem 1rem;font-size:.85rem;color:var(--primary-light);margin-top:1rem;display:none}
.form-success.show{display:block}
.contact-info-side h3{font-size:1.1rem;font-weight:700;color:var(--text-bright);margin-bottom:.75rem}
.contact-info-side p{color:var(--text-muted);margin-bottom:1.25rem;font-size:.875rem;line-height:1.7}
.contact-detail{display:flex;align-items:center;gap:.75rem;margin-bottom:.85rem;font-size:.85rem}
.contact-detail .icon{font-size:1rem;flex-shrink:0;width:20px;text-align:center}
.contact-detail .label{color:var(--text-muted);min-width:4.5rem}
.contact-detail .value{color:var(--text-bright);font-weight:500}
.contact-qr-inline{margin-top:1.5rem;text-align:center;padding:1.25rem;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius)}
.contact-qr-inline .qr-code{margin:0 auto;width:150px;height:150px}
.contact-qr-inline .qr-label{font-size:.75rem;color:var(--text-muted);margin-top:.6rem}

/* ===== Scroll Progress Bar ===== */
.scroll-progress{position:absolute;top:0;left:0;right:0;height:2px;background:transparent;z-index:1}
.scroll-progress-bar{height:100%;width:0%;background:linear-gradient(90deg,var(--primary),var(--accent));transition:width .1s linear;border-radius:0 2px 2px 0}

/* ===== Back to Top ===== */
.back-to-top{
  position:fixed;bottom:2rem;right:2rem;z-index:90;
  width:44px;height:44px;border-radius:50%;
  background:var(--primary);color:#0a0f0e;
  font-size:1.2rem;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 16px rgba(16,185,129,.3);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s,transform .2s,visibility .2s,background .15s;
}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:var(--primary-light)}
.back-to-top:active{transform:translateY(0) scale(.95)}

/* ===== Nav Dropdown Active ===== */
.nav-dropdown.active .nav-dropdown-toggle{color:var(--text-bright);background:var(--bg-elevated)}

/* ===== Focus Visible (Accessibility) ===== */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;
}

/* ===== Portal Buttons ===== */
.header-portal{display:flex;gap:.4rem}
.btn-portal{padding:.4rem .9rem;border-radius:var(--radius-sm);font-size:.8rem;font-weight:600;border:1px solid var(--border);color:var(--text);background:var(--bg-elevated);transition:all .15s}
.btn-portal:hover{border-color:var(--primary);color:var(--primary)}

/* ===== Contact QR ===== */
.contact-qr{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius);padding:2rem}
.qr-code{border-radius:var(--radius-sm);border:2px solid var(--border)}
.qr-label{font-size:.9rem;color:var(--text-muted);text-align:center}

/* ===== Articles Section ===== */
#articles{background:var(--bg)}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.article-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;transition:border-color .2s,transform .2s;display:flex;flex-direction:column}
.article-card:hover{border-color:var(--primary);transform:translateY(-2px)}
.article-card h3{font-size:1rem;font-weight:700;color:var(--text-bright);margin-bottom:.5rem;line-height:1.4}
.article-card .summary{font-size:.8rem;color:var(--text-muted);line-height:1.6;margin-bottom:.75rem;flex:1}
.article-card .meta{display:flex;align-items:center;gap:.5rem;font-size:.7rem;color:var(--text-muted)}
.article-card .meta .topic{padding:.15rem .5rem;border-radius:999px;background:var(--bg-elevated);border:1px solid var(--border)}
.article-link{color:var(--primary);font-size:.75rem;font-weight:600;margin-top:.5rem}
.article-link:hover{text-decoration:underline}

/* ===== Tutorial Section ===== */
#tutorial{background:var(--bg)}
.tutorial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:2rem}
.tutorial-step{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;position:relative;transition:border-color .2s,transform .2s}
.tutorial-step:hover{border-color:var(--primary);transform:translateY(-2px)}
.tutorial-step .step-num{width:32px;height:32px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#0a0f0e;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.9rem;font-weight:800;margin-bottom:.75rem}
.tutorial-step h3{font-size:1rem;font-weight:700;color:var(--text-bright);margin-bottom:.4rem}
.tutorial-step p{font-size:.8rem;color:var(--text-muted);line-height:1.6}
.tutorial-link{display:inline-block;margin-top:.6rem;font-size:.75rem;font-weight:600;color:var(--primary)}
.tutorial-link:hover{text-decoration:underline}

/* ===== Testimonials ===== */
#testimonials{background:var(--bg)}
.testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:2rem}
.testimonial-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  padding:1.5rem;position:relative;transition:border-color .2s,transform .2s;
  display:flex;flex-direction:column;
}
.testimonial-card:hover{border-color:var(--primary);transform:translateY(-2px)}
.testimonial-quote{
  font-size:3rem;color:var(--primary);opacity:.2;
  line-height:1;font-family:Georgia,serif;margin-bottom:-.5rem;
}
.testimonial-text{font-size:.875rem;color:var(--text);line-height:1.7;margin-bottom:1.25rem;flex:1}
.testimonial-author{display:flex;align-items:center;gap:.75rem;margin-bottom:1rem;padding-top:1rem;border-top:1px solid var(--border)}
.author-avatar{
  width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#0a0f0e;font-weight:700;font-size:.9rem;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.author-name{font-size:.85rem;font-weight:600;color:var(--text-bright)}
.author-role{font-size:.75rem;color:var(--text-muted)}
.testimonial-stat{
  display:flex;align-items:baseline;gap:.5rem;
  padding-top:.75rem;border-top:1px dashed var(--border);
}
.testimonial-stat .num{font-size:1.4rem;font-weight:800;color:var(--primary)}
.testimonial-stat .label{font-size:.75rem;color:var(--text-muted)}

/* ===== Trust Bar ===== */
.trust-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;
  background:linear-gradient(135deg,rgba(16,185,129,.06),rgba(245,158,11,.04));
  border:1px solid rgba(16,185,129,.15);border-radius:var(--radius);padding:1.5rem;
}
.trust-item{text-align:center}
.trust-num{font-size:clamp(1.25rem,2.5vw,1.75rem);font-weight:800;color:var(--text-bright);line-height:1}
.trust-num .unit{font-size:.85rem;color:var(--primary);font-weight:600;margin-left:.1rem}
.trust-label{font-size:.75rem;color:var(--text-muted);margin-top:.35rem}

/* ===== CTA Banner ===== */
.cta-banner{
  background:linear-gradient(135deg,rgba(16,185,129,.12) 0%,rgba(245,158,11,.08) 100%);
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  padding:3.5rem 0;position:relative;overflow:hidden;
}
.cta-banner::before{
  content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:300px;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent);
}
.cta-banner .container{display:flex;align-items:center;justify-content:space-between;gap:2rem}
.cta-banner-content h2{font-size:clamp(1.25rem,2.5vw,1.75rem);font-weight:800;margin-bottom:.5rem}
.cta-banner-content p{color:var(--text-muted);font-size:.9rem}
.cta-banner-actions{display:flex;gap:.75rem;flex-shrink:0}
.btn-lg{padding:.85rem 1.75rem;font-size:.95rem}

/* ===== Article Page ===== */
.article-page{padding:calc(var(--header-h) + 2rem) 0 4rem}
.article-page .container{max-width:48rem}
.article-back{display:inline-flex;align-items:center;gap:.4rem;font-size:.8rem;color:var(--text-muted);margin-bottom:1.5rem;transition:color .15s}
.article-back:hover{color:var(--primary)}
.breadcrumb{display:flex;align-items:center;gap:.5rem;font-size:.8rem;color:var(--text-muted);margin-bottom:1.5rem;flex-wrap:wrap}
.breadcrumb a{color:var(--text-muted);transition:color .15s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--text);max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-page h1{font-size:clamp(1.5rem,3vw,2rem);font-weight:800;letter-spacing:-.02em;line-height:1.3;margin-bottom:.75rem}
.article-meta{display:flex;align-items:center;gap:.75rem;font-size:.75rem;color:var(--text-muted);margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border)}
.article-meta .topic{padding:.2rem .6rem;border-radius:999px;background:var(--bg-elevated);border:1px solid var(--border)}
.article-content{font-size:.9rem;line-height:1.8;color:var(--text)}
.article-content h2{font-size:1.25rem;font-weight:700;margin:2rem 0 .75rem;color:var(--text-bright)}
.article-content h3{font-size:1.05rem;font-weight:700;margin:1.5rem 0 .5rem;color:var(--text-bright)}
.article-content p{margin-bottom:1rem;color:var(--text-muted)}
.article-content ul{margin-bottom:1rem;padding-left:1.5rem}
.article-content ul li{color:var(--text-muted);margin-bottom:.4rem;list-style:disc}
.article-content a{color:var(--primary);text-decoration:underline}
.article-content mark{padding:0 2px;border-radius:2px;font-weight:500}
.article-cta{margin-top:3rem;padding:2rem;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);text-align:center}
.article-cta h3{font-size:1.1rem;font-weight:700;margin-bottom:.5rem;color:var(--text-bright)}
.article-cta p{font-size:.85rem;color:var(--text-muted);margin-bottom:1rem}
.article-figure{margin:2rem 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);background:var(--bg-card);position:relative}
.article-figure img{width:100%;border-radius:var(--radius) var(--radius) 0 0;transition:transform .3s}
.article-figure:hover img{transform:scale(1.02)}
.article-figure::after{content:"惠引小铺";position:absolute;bottom:calc(.6rem + 24px);right:12px;font-size:.7rem;color:rgba(255,255,255,0.85);background:rgba(16,185,129,0.85);padding:3px 10px;border-radius:4px;font-weight:500;letter-spacing:1px;backdrop-filter:blur(4px);z-index:2}
.article-figure figcaption{padding:.6rem 1rem;font-size:.75rem;color:var(--text-muted);text-align:center;border-top:1px solid var(--border)}
.article-kefu{display:flex;gap:2rem;align-items:center;margin-top:2rem;padding:2rem;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);flex-wrap:wrap}
.article-kefu .kefu-qr{flex:0 0 auto;text-align:center}
.article-kefu .kefu-qr .qr-img{width:200px;height:200px;border-radius:var(--radius-sm);border:1px solid var(--border)}
.article-kefu .kefu-qr .qr-title{font-size:.9rem;font-weight:600;color:var(--text-bright);margin-top:.75rem}
.article-kefu .kefu-qr .qr-sub{font-size:.75rem;color:var(--text-muted);margin-top:.25rem}
.article-kefu .kefu-info{flex:1;min-width:200px}
.article-kefu .kefu-info h4{font-size:1rem;font-weight:700;color:var(--text-bright);margin-bottom:.75rem}
.article-kefu .kefu-info p{font-size:.85rem;color:var(--text-muted);margin-bottom:.4rem}
.btn-sm{padding:.4rem .9rem;font-size:.8rem}
.article-nav{display:flex;justify-content:space-between;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border)}
.article-related{margin:2rem 0;padding:1.5rem;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius)}
.article-related .related-title{font-size:.9rem;font-weight:600;color:var(--text-bright);margin-bottom:.8rem}
.article-related .related-list{display:flex;flex-direction:column;gap:.5rem}
.article-related .rel-item{display:flex;justify-content:space-between;align-items:center;padding:.6rem .8rem;border-radius:6px;text-decoration:none;transition:all .2s;border-left:3px solid transparent}
.article-related .rel-item:hover{background:var(--bg-hover);border-left-color:var(--primary)}
.article-related .rel-title{font-size:.85rem;color:var(--text-bright);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-related .rel-date{font-size:.75rem;color:var(--text-muted);margin-left:.5rem;flex-shrink:0}
.article-tags{margin:2rem 0;padding:1.5rem;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius)}
.article-tags .tags-title{font-size:.9rem;font-weight:600;color:var(--text-bright);margin-bottom:.8rem}
.article-tags .tags-list{display:flex;flex-wrap:wrap;gap:.5rem}
.article-tags .tag{display:inline-block;padding:.3rem .8rem;background:var(--bg-card);color:var(--primary);font-size:.8rem;border:1px solid var(--border);border-radius:20px;text-decoration:none;transition:all .2s}
.article-tags .tag:hover{background:var(--primary);color:#fff;transform:translateY(-1px)}
.search-page{padding:4rem 0}
.search-title{font-size:1.5rem;margin-bottom:.5rem;color:var(--text-bright)}
.search-title span{color:var(--primary)}
.search-count{color:var(--text-muted);margin-bottom:2rem;font-size:.9rem}
.search-results{display:flex;flex-direction:column;gap:1rem}
.search-item{display:block;padding:1.5rem;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);text-decoration:none;transition:all .2s}
.search-item:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 8px 24px rgba(16,185,129,0.1)}
.search-item h3{font-size:1.1rem;color:var(--text-bright);margin-bottom:.5rem}
.search-item p{font-size:.9rem;color:var(--text-muted);margin-bottom:.75rem;line-height:1.6}
.search-meta{display:flex;gap:1rem;font-size:.8rem;color:var(--text-muted)}
.search-meta .topic{color:var(--primary);background:var(--primary-bg);padding:2px 10px;border-radius:20px}

/* ===== Footer ===== */
.site-footer{background:var(--bg-card);border-top:1px solid var(--border);padding:3rem 0 2rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:2rem;margin-bottom:2rem}
.footer-brand .logo{margin-bottom:1rem}
.footer-brand p{font-size:.8rem;color:var(--text-muted);line-height:1.7;max-width:20rem}
.footer-portal{display:flex;gap:.5rem;margin-top:1rem}
.footer-portal .btn-portal{font-size:.75rem;padding:.35rem .8rem}
.footer-col h4{font-size:.8rem;font-weight:700;color:var(--text-bright);margin-bottom:.75rem}
.footer-col a{display:block;font-size:.8rem;color:var(--text-muted);margin-bottom:.5rem;transition:color .15s}
.footer-col a:hover{color:var(--primary)}
.footer-qr{text-align:center}
.footer-qr h4{font-size:.8rem;font-weight:700;color:var(--text-bright);margin-bottom:.75rem}
.footer-qr p{font-size:.7rem;color:var(--text-muted);margin-top:.5rem}
.qr-code-sm{border-radius:var(--radius-sm);border:1px solid var(--border);margin:0 auto}
.footer-bottom{border-top:1px solid var(--border);padding-top:1.5rem;display:flex;justify-content:space-between;align-items:center;font-size:.75rem;color:var(--text-muted)}
.footer-bottom a:hover{color:var(--primary)}

/* ===== Scroll Reveal ===== */
.reveal{opacity:1;transform:none;transition:opacity .5s,transform .5s}
.reveal.hidden{opacity:0;transform:translateY(20px)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ===== Admin Panel ===== */
.admin-body{background:var(--bg);color:var(--text)}
/* ===== 后台侧边栏布局 ===== */
.admin-layout{display:flex;min-height:100vh;margin:0}
.admin-sidebar{width:240px;background:var(--bg-card);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;flex-shrink:0}
.sidebar-logo{padding:1.25rem 1.25rem;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:.6rem}
.sidebar-logo-dot{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;position:relative;flex-shrink:0}
.sidebar-logo-dot::after{content:'';position:absolute;width:10px;height:10px;background:#fff;border-radius:50%;top:50%;left:50%;transform:translate(-50%,-50%)}
.sidebar-logo-text{font-size:1rem;font-weight:700;color:var(--text-bright)}
.sidebar-logo-text em{font-style:normal;color:var(--primary-light)}

.sidebar-nav{flex:1;padding:.75rem .5rem;overflow-y:auto}
.sidebar-group{margin-bottom:.75rem}
.sidebar-group-title{font-size:.7rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;padding:.5rem .85rem;margin-bottom:.2rem}
.sidebar-item{display:flex;align-items:center;gap:.65rem;padding:.55rem .85rem;border-radius:8px;font-size:.85rem;color:var(--text-muted);text-decoration:none;transition:all .15s;margin-bottom:.15rem;cursor:pointer}
.sidebar-item svg{width:18px;height:18px;flex-shrink:0}
.sidebar-item span{flex:1}
.sidebar-item:hover{background:var(--bg-elevated);color:var(--text)}
.sidebar-item.active{background:linear-gradient(135deg,rgba(16,185,129,.12),rgba(96,165,250,.1));color:var(--primary-light);font-weight:600;position:relative}
.sidebar-item.active::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:20px;background:var(--primary);border-radius:0 3px 3px 0}

.sidebar-footer{border-top:1px solid var(--border);padding:.75rem}
.sidebar-footer-link{display:flex;align-items:center;gap:.65rem;padding:.55rem .85rem;border-radius:8px;font-size:.85rem;color:var(--text-muted);text-decoration:none;transition:all .15s;cursor:pointer}
.sidebar-footer-link svg{width:18px;height:18px;flex-shrink:0}
.sidebar-footer-link:hover{background:var(--bg-elevated);color:var(--text)}
.sidebar-footer-link.danger:hover{background:rgba(220,38,38,.08);color:#ef4444}

.admin-layout .admin-main{margin-left:240px;max-width:none;padding:2rem 2.5rem;width:calc(100% - 240px)}
.admin-layout .admin-section{max-width:960px}
.admin-content-header{display:none;align-items:center;gap:1rem;padding-bottom:1rem;margin-bottom:1rem;border-bottom:1px solid var(--border)}
.sidebar-toggle{display:none;align-items:center;justify-content:center;width:38px;height:38px;border-radius:8px;background:var(--bg-card);border:1px solid var(--border);color:var(--text);cursor:pointer;transition:all .15s}
.sidebar-toggle:hover{border-color:var(--primary);color:var(--primary)}
.sidebar-toggle svg{width:20px;height:20px}

.admin-header{background:var(--bg-card);border-bottom:1px solid var(--border);padding:1rem 1.5rem;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50}
.admin-header .logo{font-size:1.1rem}
.admin-header .nav{display:flex;gap:1rem;align-items:center}
.admin-header .nav a{font-size:.8rem;color:var(--text-muted);transition:color .15s}
.admin-header .nav a:hover{color:var(--primary)}
.admin-main{max-width:900px;margin:0 auto;padding:2rem 1.5rem}
.admin-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;margin-bottom:1.5rem}
.admin-section h2{font-size:1.1rem;font-weight:700;margin-bottom:1.5rem;color:var(--text-bright);display:flex;align-items:center;gap:.5rem}
.admin-section h2::before{content:'';width:3px;height:18px;background:var(--primary);border-radius:2px}
.admin-form{display:grid;gap:1.25rem}
.admin-form .row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.admin-form label{font-size:.8rem;color:var(--text-muted);margin-bottom:.35rem;display:block;font-weight:500}
.admin-form input,.admin-form textarea,.admin-form select{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.55rem .75rem;color:var(--text);font-size:.85rem}
.admin-form input:focus,.admin-form textarea:focus,.admin-form select:focus{outline:none;border-color:var(--primary)}
.admin-form textarea{min-height:100px;resize:vertical;font-family:inherit}
.admin-form .hint{font-size:.7rem;color:var(--text-muted);margin-top:.25rem}
.model-list{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1rem}
.model-item{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;background:var(--bg);border:1px solid var(--border);border-radius:8px;cursor:pointer;transition:all .2s}
.model-item:hover{border-color:var(--primary)}
.model-item.active{border-color:var(--primary);background:linear-gradient(135deg,#ecfdf5,#d1fae5)}
.model-item .model-name{font-weight:600;color:var(--text-bright);font-size:.9rem;flex:1}
.model-item .model-id{font-size:.75rem;color:var(--text-muted);font-family:Consolas,monospace}
.model-item .model-badge{font-size:.7rem;padding:2px 8px;border-radius:10px;background:var(--primary);color:#fff;font-weight:500}
.model-item .model-del{color:#ef4444;background:none;border:none;cursor:pointer;font-size:.8rem;padding:.25rem .5rem;border-radius:4px}
.model-item .model-del:hover{background:#fef2f2}
.model-add-form{background:var(--bg);border:1px dashed var(--border);border-radius:8px;padding:.75rem}
.model-add-form .row{margin-bottom:.5rem}
.model-add-form .row:last-child{margin-bottom:0}
.admin-btn{background:var(--primary);color:#0a0f0e;font-weight:700;font-size:.85rem;padding:.55rem 1.5rem;border-radius:var(--radius-sm);transition:background .15s;cursor:pointer}
.admin-btn:hover{background:var(--primary-light)}
.admin-btn.secondary{background:var(--bg-elevated);color:var(--text);border:1px solid var(--border)}
.admin-btn.secondary:hover{border-color:var(--primary)}
.admin-btn.danger{background:#dc2626;color:#fff}
.admin-btn.danger:hover{background:#ef4444}
.admin-actions{display:flex;gap:.75rem;align-items:center;flex-wrap:wrap}
.admin-table{width:100%;border-collapse:collapse}
.admin-table th{text-align:left;font-size:.75rem;color:var(--text-muted);font-weight:600;padding:.5rem .75rem;border-bottom:1px solid var(--border)}
.admin-table td{font-size:.8rem;padding:.6rem .75rem;border-bottom:1px solid var(--border);color:var(--text)}
.admin-table tr:hover td{background:var(--bg-elevated)}
.admin-table .actions{display:flex;gap:.5rem}
.admin-table .actions button{font-size:.7rem;padding:.2rem .5rem;border-radius:4px;background:var(--bg-elevated);border:1px solid var(--border);color:var(--text-muted);cursor:pointer}
.admin-table .actions button:hover{border-color:var(--primary);color:var(--primary)}
.admin-table .actions button.del:hover{border-color:#dc2626;color:#dc2626}
.admin-status{display:inline-block;padding:.15rem .5rem;border-radius:999px;font-size:.65rem;font-weight:600}
.admin-status.published{background:rgba(16,185,129,.15);color:var(--primary-light)}
.admin-status.draft{background:rgba(245,158,11,.15);color:var(--accent)}
.cron-box{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:1rem;font-size:.8rem}
.cron-box code{background:var(--bg-elevated);padding:.15rem .4rem;border-radius:3px;font-size:.75rem;color:var(--primary-light);word-break:break-all}
.admin-message{padding:.75rem 1rem;border-radius:var(--radius-sm);font-size:.8rem;margin-bottom:1rem;display:none}
.admin-message.show{display:block}
.admin-message.success{background:rgba(16,185,129,.1);border:1px solid rgba(16,185,129,.3);color:var(--primary-light)}
.admin-message.error{background:rgba(220,38,38,.1);border:1px solid rgba(220,38,38,.3);color:#ef4444}

/* 提示词编辑器 */
.prompt-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem;margin-bottom:1.5rem;position:relative;overflow:hidden}
.prompt-section::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--primary-light),#60a5fa)}
.prompt-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.25rem;padding-bottom:1rem;border-bottom:1px solid var(--border)}
.prompt-title{display:flex;align-items:center;gap:.75rem}
.prompt-title h2{font-size:1.1rem;font-weight:700;color:var(--text-bright);margin:0}
.prompt-icon{width:22px;height:22px;color:var(--primary)}
.prompt-badge{font-size:.7rem;padding:3px 10px;border-radius:999px;background:linear-gradient(135deg,rgba(16,185,129,.15),rgba(96,165,250,.15));color:var(--primary-light);font-weight:600;border:1px solid rgba(16,185,129,.25)}
.prompt-char-count{font-size:.8rem;color:var(--text-muted);background:var(--bg);padding:.35rem .75rem;border-radius:999px;border:1px solid var(--border)}
.prompt-char-count span{color:var(--primary-light);font-weight:600}

.prompt-desc{display:flex;gap:.75rem;padding:1rem 1.25rem;background:linear-gradient(135deg,rgba(16,185,129,.06),rgba(96,165,250,.06));border:1px solid rgba(16,185,129,.15);border-radius:10px;margin-bottom:1.25rem}
.prompt-desc-icon{font-size:1.2rem;flex-shrink:0;margin-top:1px}
.prompt-desc-text{font-size:.8rem;color:var(--text-muted);line-height:1.6;flex:1}
.prompt-vars{margin-top:.5rem;display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}
.prompt-var-label{font-size:.75rem;color:var(--text-muted);font-weight:500}
.prompt-var-chip{background:var(--bg-card);border:1px solid var(--border);border-radius:6px;padding:.2rem .6rem;font-size:.72rem;font-family:Consolas,monospace;color:var(--primary-light);cursor:pointer;transition:all .15s;font-weight:500}
.prompt-var-chip:hover{border-color:var(--primary);background:rgba(16,185,129,.08);transform:translateY(-1px)}

.prompt-editor{border:1px solid var(--border);border-radius:10px;overflow:hidden;background:var(--bg);transition:border-color .2s,box-shadow .2s}
.prompt-editor:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(16,185,129,.12)}
.prompt-editor-toolbar{display:flex;align-items:center;gap:.25rem;padding:.5rem .75rem;background:var(--bg-elevated);border-bottom:1px solid var(--border)}
.prompt-tool-btn{display:flex;align-items:center;gap:.35rem;padding:.3rem .6rem;background:none;border:none;border-radius:6px;color:var(--text-muted);font-size:.75rem;cursor:pointer;transition:all .15s}
.prompt-tool-btn svg{width:14px;height:14px}
.prompt-tool-btn:hover{background:var(--bg);color:var(--text)}
.prompt-tool-spacer{flex:1}
.prompt-textarea{width:100%;min-height:320px;padding:1rem 1.25rem;background:var(--bg);border:none;outline:none;resize:vertical;font-family:'SF Mono',Consolas,'Microsoft YaHei',monospace;font-size:.82rem;line-height:1.7;color:var(--text);box-sizing:border-box}
.prompt-textarea::placeholder{color:var(--text-muted);opacity:.6}

.prompt-actions{display:flex;gap:.75rem;align-items:center;justify-content:flex-end;margin-top:1.25rem;padding-top:1rem;border-top:1px solid var(--border)}
.prompt-actions .admin-btn{display:flex;align-items:center;gap:.4rem;padding:.6rem 1.5rem}
.prompt-actions .admin-btn svg{width:16px;height:16px}

.admin-login{max-width:360px;margin:8rem auto;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem}
.admin-login h2{text-align:center;font-size:1.2rem;margin-bottom:1.5rem}
.admin-login input{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.6rem .75rem;color:var(--text);font-size:.875rem;margin-bottom:1rem}
.admin-login input:focus{outline:none;border-color:var(--primary)}
.admin-login button{width:100%}

/* Nav portal links - hidden on desktop, shown in mobile menu */
.nav-portal{display:none!important}

/* ===== Responsive ===== */
@media (max-width:968px){
  .hero .container{grid-template-columns:1fr;gap:2rem}
  .hero-visual{height:260px}
  .hero-img{max-width:280px}
  .about-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:1.5rem}
  .channel-grid{grid-template-columns:repeat(2,1fr)}
  .solution-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:1rem}
  .article-grid{grid-template-columns:repeat(2,1fr)}
  .tutorial-grid{grid-template-columns:repeat(2,1fr)}
  .testimonial-grid{grid-template-columns:1fr}
  .trust-bar{grid-template-columns:repeat(2,1fr)}
  .cta-banner .container{flex-direction:column;text-align:center}
  .cta-banner-actions{justify-content:center}
  .admin-form .row{grid-template-columns:1fr}
}
@media (max-width:640px){
  .main-nav{display:none}
  .header-portal{display:none}
  .menu-toggle{display:block}
  .main-nav.open{display:flex;flex-direction:column;position:absolute;top:var(--header-h);left:0;right:0;background:var(--bg-card);border-bottom:1px solid var(--border);padding:1rem 1.5rem;gap:.25rem;max-height:calc(100vh - var(--header-h));overflow-y:auto;box-shadow:0 4px 20px rgba(0,0,0,.3)}
  .main-nav.open>a{padding:.7rem .5rem;font-size:.9rem;min-height:44px;display:flex;align-items:center}
  .nav-dropdown{width:100%}
  .nav-dropdown-toggle{width:100%;justify-content:flex-start;padding:.7rem .5rem;font-size:.9rem;min-height:44px}
  .nav-dropdown-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;background:var(--bg-elevated);border:none;border-radius:0;padding:.25rem 0 .25rem 1rem;margin:.25rem 0;display:none}
  .nav-dropdown.open .nav-dropdown-menu{display:block}
  .nav-dropdown-menu a{padding:.5rem .5rem;font-size:.85rem;min-height:40px;display:flex;align-items:center}
  .nav-portal{display:flex!important;color:var(--primary);font-weight:600;border-top:1px solid var(--border);margin-top:.5rem;padding-top:.75rem!important}
  .header-cta{display:none}
  .activity-grid{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr}
  .solution-grid{grid-template-columns:1fr}
  .article-grid{grid-template-columns:1fr}
  .tutorial-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:.5rem;text-align:center}
  .form-row{grid-template-columns:1fr}
  section{padding:2.5rem 0}
  .hero{padding:calc(var(--header-h) + 1.5rem) 0 2rem}
  .hero .container{gap:1.5rem}
  .hero-tag{font-size:.7rem;margin-bottom:1rem}
  .hero h1{font-size:1.35rem;line-height:1.3;margin-bottom:.75rem}
  .hero-sub{font-size:.825rem;line-height:1.6;margin-bottom:1.25rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .hero-actions{gap:.5rem}
  .hero-actions .btn{flex:1;min-width:0;padding:.6rem .8rem;font-size:.8rem}
  .hero-actions .btn-outline{display:none}
  .hero-actions .btn-primary{flex:1 0 100%}
  .hero-visual{height:auto;order:-1}
  .hero-img{max-width:220px}
  .stats-grid{grid-template-columns:1fr 1fr;gap:.75rem}
  .stat-item .num{font-size:1.4rem}
  .contact-grid{grid-template-columns:1fr;gap:1.5rem}
  .contact-form{padding:1.5rem}
  .contact-qr-inline .qr-code{width:130px;height:130px}
  .back-to-top{bottom:1.25rem;right:1.25rem;width:40px;height:40px;font-size:1rem}
  .section-head{margin-bottom:2rem}
  .section-head h2{font-size:1.25rem}
  .section-head p{font-size:.825rem}
  .testimonial-grid{gap:.75rem}
  .trust-bar{gap:.75rem;padding:1rem}
  .trust-num{font-size:1.1rem}
  .cta-banner{padding:2.5rem 0}
  .cta-banner-actions{flex-direction:column;width:100%}
  .cta-banner-actions .btn{width:100%}
  .btn-lg{padding:.75rem 1.25rem;font-size:.875rem}
  .admin-main{padding:1rem}
  .admin-section{padding:1.25rem}
  .admin-table{font-size:.7rem}
  .admin-table th,.admin-table td{padding:.4rem .5rem}
  .admin-layout .admin-sidebar{transform:translateX(-100%);transition:transform .25s ease;width:260px;box-shadow:4px 0 20px rgba(0,0,0,.3)}
  .admin-layout.sidebar-open .admin-sidebar{transform:translateX(0)}
  .admin-layout .admin-main{margin-left:0;width:100%;padding:1rem}
  .sidebar-toggle{display:flex!important}
  .admin-content-header{padding-left:0}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ===== 主题模板库 ===== */
.theme-toolbar{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:12px 16px;background:var(--bg-card);border-radius:8px;margin-bottom:1rem;
  flex-wrap:wrap;
}
.theme-toggle{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.theme-toggle label{font-weight:600;font-size:.85rem;white-space:nowrap}
.theme-toggle select{padding:6px 10px;border:1px solid var(--border);border-radius:6px;font-size:.85rem}
.theme-toggle .hint{font-size:.75rem;color:var(--text-muted)}
.theme-current{font-size:.85rem;color:var(--text-muted)}
.theme-current strong{color:var(--primary)}

.theme-library{margin-bottom:1rem}
.theme-cat-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 0 6px;margin-top:8px;
  border-bottom:2px solid var(--border);
}
.theme-cat-title{font-weight:700;font-size:.9rem;color:var(--text)}
.theme-cat-count{font-size:.75rem;color:var(--text-muted)}

.theme-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));
  gap:12px;padding:12px 0;
}
.theme-card{
  position:relative;padding:14px;border:1px solid var(--border);
  border-radius:8px;cursor:pointer;transition:all .2s;
  background:var(--bg-card);
}
.theme-card:hover{
  border-color:var(--primary);box-shadow:0 2px 12px rgba(7,193,96,.12);
  transform:translateY(-2px);
}
.theme-card-active{
  border-color:var(--primary);border-width:2px;
  box-shadow:0 0 0 3px rgba(7,193,96,.1);
  background:linear-gradient(135deg,rgba(7,193,96,.04),transparent);
}
.theme-card-top{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:6px;
}
.theme-card-name{font-weight:600;font-size:.9rem;color:var(--text)}
.theme-check{
  display:inline-flex;align-items:center;justify-content:center;
  width:22px;height:22px;border-radius:50%;
  background:var(--primary);color:#fff;font-size:12px;font-weight:bold;
}
.theme-card-tagline{font-size:.75rem;color:var(--text-muted);margin-bottom:4px}
.theme-card-desc{font-size:.72rem;color:var(--text-muted);line-height:1.4;margin-bottom:6px}
.theme-card-meta{font-size:.7rem;color:var(--text-muted);margin-bottom:8px}
.theme-card-meta span{display:inline-block;padding:2px 8px;background:var(--bg-hover);border-radius:4px}
.theme-preview-btn{
  display:block;width:100%;padding:6px 0;text-align:center;
  font-size:.75rem;border:1px solid var(--border);border-radius:6px;
  background:transparent;color:var(--text-muted);cursor:pointer;
  transition:all .2s;
}
.theme-preview-btn:hover{
  background:var(--primary);color:#fff;border-color:var(--primary);
}

/* 主题预览弹窗 */
.theme-preview-modal{
  display:none;position:fixed;top:0;left:0;width:100%;height:100%;
  z-index:9999;align-items:center;justify-content:center;
}
.theme-preview-overlay{
  position:absolute;top:0;left:0;width:100%;height:100%;
  background:rgba(0,0,0,.5);
}
.theme-preview-content{
  position:relative;width:90%;max-width:677px;max-height:85vh;
  background:#fff;border-radius:12px;overflow:hidden;
  display:flex;flex-direction:column;
  box-shadow:0 20px 60px rgba(0,0,0,.3);
}
.theme-preview-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 20px;border-bottom:1px solid var(--border);
  background:var(--bg-card);
}
.theme-preview-title{font-weight:700;font-size:1rem}
.theme-preview-close{
  border:none;background:transparent;font-size:24px;
  cursor:pointer;color:var(--text-muted);line-height:1;padding:0;
}
.theme-preview-close:hover{color:var(--danger)}
.theme-preview-body{
  overflow-y:auto;padding:0;flex:1;
}
.theme-preview-info{
  padding:16px 20px;border-bottom:1px solid var(--border);
  background:var(--bg-card);
}
.theme-preview-info h3{font-size:1.1rem;margin-bottom:4px}
.theme-preview-info h3 small{font-size:.75rem;color:var(--text-muted);font-weight:400}
.theme-preview-info p{font-size:.8rem;color:var(--text-muted);margin:4px 0}
.theme-preview-render{
  padding:0;overflow-x:hidden;
}

/* ===== 素材库卡片 ===== */
.sucai-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .2s,transform .2s;
}
.sucai-card:hover{
  border-color:var(--primary);transform:translateY(-2px);
}
.sucai-card-img{
  width:100%;height:160px;overflow:hidden;background:var(--bg);position:relative;
}
.sucai-card-img img{
  width:100%;height:100%;object-fit:cover;
}
.sucai-card-body{
  padding:.85rem;display:flex;flex-direction:column;flex:1;
}
.sucai-card-body .admin-btn{padding:.2rem .5rem;font-size:.7rem;}
#sucaiList{
  margin-top:.5rem;
}