:root{--primary:#10b981;--primary2:#06b6d4;--dark:#0b1220;--dark2:#0f172a;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc;--grad:linear-gradient(135deg,#10b981,#06b6d4);--grad2:linear-gradient(135deg,#059669,#0891b2);--shadow:0 10px 40px rgba(15,23,42,.12);--shadow-sm:0 4px 16px rgba(15,23,42,.08);--r:16px;--r-sm:12px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}ul,ol{list-style:none}img{max-width:100%;display:block}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}.section{padding:88px 0}.section-head{text-align:center;max-width:760px;margin:0 auto 56px}.section-head .eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--primary);background:rgba(16,185,129,.1);padding:6px 14px;border-radius:999px;margin-bottom:16px}.section-head h2{font-size:36px;line-height:1.25;font-weight:800;letter-spacing:-.02em;margin-bottom:16px}.section-head p{color:var(--muted);font-size:17px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;border-radius:999px;padding:13px 28px;transition:.25s;cursor:pointer;border:1px solid transparent;white-space:nowrap}.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(16,185,129,.32)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(16,185,129,.42)}.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4)}.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(15,23,42,.3)}.btn-lg{padding:16px 36px;font-size:16px}.btn-sm{padding:10px 20px;font-size:14px}

/* ===== 导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:0;background:rgba(255,255,255,0);transition:.3s;border-bottom:1px solid transparent}.nav.scrolled{background:rgba(11,18,32,.86);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.08)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px}.nav-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:#fff}.nav-logo img{height:34px;width:auto}.nav-menu{display:flex;align-items:center;gap:4px}.nav-item{position:relative}.nav-link{display:flex;align-items:center;gap:6px;padding:10px 16px;font-size:15px;font-weight:500;color:rgba(255,255,255,.86);border-radius:10px;cursor:pointer;transition:.2s}.nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}.nav-link .arrow{display:inline-block;font-size:10px;transition:transform .3s}.nav-item:hover .nav-link .arrow{transform:rotate(180deg)}.dropdown{position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(8px);min-width:220px;background:#fff;border-radius:var(--r-sm);box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.25s;padding:8px;z-index:100}.nav-item:hover .dropdown,.nav-item.open .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}.dropdown::before{content:"";position:absolute;top:-12px;left:0;right:0;height:12px}.dropdown a{display:block;padding:10px 14px;font-size:14px;color:var(--ink);border-radius:8px;transition:.15s}.dropdown a:hover{background:#f1f5f9;color:var(--primary)}.dropdown a .dd-title{font-weight:600}.dropdown a .dd-sub{font-size:12px;color:var(--muted)}.nav-cta{display:flex;align-items:center;gap:10px}.nav-cta.mobile{display:none}.nav-burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}.nav-burger span{display:block;width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s}.nav-burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}.nav-burger.active span:nth-child(2){opacity:0}.nav-burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Hero ===== */
.hero{position:relative;padding:170px 0 100px;background:radial-gradient(1200px 600px at 70% -10%,rgba(6,182,212,.28),transparent 60%),radial-gradient(900px 500px at 0% 10%,rgba(16,185,129,.22),transparent 55%),var(--dark);color:#fff;overflow:hidden}.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);padding:7px 16px;border-radius:999px;font-size:13px;margin-bottom:24px}.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);animation:pulse 2s infinite}.hero h1{font-size:56px;line-height:1.12;font-weight:800;letter-spacing:-.03em;margin-bottom:20px}.hero h1 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero-sub{font-size:18px;color:rgba(255,255,255,.72);max-width:520px;margin-bottom:32px}.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px}.hero-stats{display:flex;gap:40px;flex-wrap:wrap}.hero-stats .stat b{display:block;font-size:30px;font-weight:800;letter-spacing:-.02em}.hero-stats .stat span{font-size:14px;color:rgba(255,255,255,.6)}@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(16,185,129,.6)}50%{box-shadow:0 0 0 8px rgba(16,185,129,0)}}.hero-visual{position:relative}.phone{position:relative;width:320px;max-width:100%;margin:0 auto;background:#fff;border-radius:36px;padding:16px;box-shadow:0 30px 80px rgba(0,0,0,.45);color:var(--ink)}.phone-screen{background:#f1f5f9;border-radius:24px;padding:18px;min-height:540px;display:flex;flex-direction:column}.phone-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.phone-top .u{display:flex;align-items:center;gap:8px}.phone-top .u .avatar{width:34px;height:34px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px}.phone-top .u b{font-size:14px}.phone-top .lock{font-size:18px}.chat{flex:1;display:flex;flex-direction:column;gap:10px}.msg{max-width:78%;padding:10px 14px;font-size:13.5px;border-radius:16px;line-height:1.5}.msg.in{align-self:flex-start;background:#fff;border-bottom-left-radius:4px}.msg.out{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:4px}.msg .tag{font-size:11px;opacity:.7;margin-bottom:2px}.phone-input{display:flex;gap:8px;margin-top:14px}.phone-input input{flex:1;border:1px solid var(--line);border-radius:999px;padding:10px 16px;font-size:13px;outline:none}.phone-input .send{width:40px;height:40px;border-radius:50%;background:var(--grad);color:#fff;border:none;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center}.float-chip{position:absolute;background:#fff;color:var(--ink);border-radius:12px;box-shadow:var(--shadow);padding:10px 14px;font-size:12px;font-weight:600;display:flex;align-items:center;gap:8px;animation:float 4s ease-in-out infinite}.float-chip .ic{width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:14px}.fc1{top:12%;left:-6%;background:#fff}.fc2{top:46%;right:-8%;animation-delay:1.2s}.fc3{bottom:10%;left:-4%;animation-delay:2.4s}@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ===== 通用卡片 ===== */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.step-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:36px 28px;position:relative;transition:.3s}.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}.step-num{font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.08em;margin-bottom:14px}.step-icon{width:54px;height:54px;border-radius:14px;background:rgba(16,185,129,.12);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px}.step-card h3{font-size:19px;font-weight:700;margin-bottom:10px}.step-card p{color:var(--muted);font-size:15px}

.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:32px 28px;transition:.3s}.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}.feature-card .fi{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,rgba(16,185,129,.15),rgba(6,182,212,.15));color:var(--primary2);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px}.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px}.feature-card p{color:var(--muted);font-size:14.5px}

.section-alt{background:var(--dark);color:#fff}.section-alt .section-head p{color:rgba(255,255,255,.6)}

/* 数据节点 */
.data-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:48px}.data-stat{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--r);padding:28px;text-align:center}.data-stat b{display:block;font-size:34px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.data-stat span{font-size:14px;color:rgba(255,255,255,.6)}.nodes-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.node-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-sm);padding:20px;display:flex;align-items:center;gap:12px;transition:.25s}.node-card:hover{background:rgba(255,255,255,.1);border-color:rgba(16,185,129,.5)}.node-flag{width:36px;height:36px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff;flex-shrink:0}.node-card b{font-size:14.5px;display:block}.node-card span{font-size:12px;color:rgba(255,255,255,.5)}

/* 应用场景 */
.scenarios-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.scenario-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:32px 28px;transition:.3s}.scenario-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}.scenario-card .fi{width:54px;height:54px;border-radius:14px;background:linear-gradient(135deg,rgba(16,185,129,.15),rgba(6,182,212,.15));color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px}.scenario-card h3{font-size:18px;font-weight:700;margin-bottom:10px}.scenario-card p{color:var(--muted);font-size:14.5px}

/* 协议标签 */
.protocol-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}.proto-tag{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:12px 24px;font-weight:600;font-size:15px;transition:.25s}.proto-tag:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-3px);box-shadow:var(--shadow-sm)}.proto-tag .pi{font-size:18px}

/* 价格 */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:stretch}.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:40px 32px;display:flex;flex-direction:column;position:relative;transition:.3s}.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}.price-card.popular{background:var(--dark);color:#fff;border-color:transparent;transform:scale(1.03);box-shadow:var(--shadow)}.price-card.popular:hover{transform:scale(1.03) translateY(-6px)}.price-pop{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12px;font-weight:700;padding:6px 18px;border-radius:999px;letter-spacing:.04em}.price-name{font-size:18px;font-weight:700;margin-bottom:6px}.price-desc{font-size:14px;color:var(--muted);margin-bottom:24px}.price-card.popular .price-desc{color:rgba(255,255,255,.6)}.price-amount{font-size:44px;font-weight:800;letter-spacing:-.02em;margin-bottom:4px}.price-amount small{font-size:16px;font-weight:500}.price-period{font-size:13px;color:var(--muted);margin-bottom:24px}.price-card.popular .price-period{color:rgba(255,255,255,.5)}.price-features{flex:1;display:flex;flex-direction:column;gap:12px;margin-bottom:28px}.price-features li{display:flex;align-items:center;gap:10px;font-size:14.5px}.price-features li::before{content:"✓";color:var(--primary);font-weight:700}.price-card .btn{width:100%}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto}.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);margin-bottom:14px;overflow:hidden}.faq-q{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;font-weight:600;font-size:16px;cursor:pointer;user-select:none}.faq-q .f-arrow{transition:.3s;color:var(--primary);font-size:18px}.faq-item.open .f-arrow{transform:rotate(45deg)}.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 24px}.faq-a-inner{padding-bottom:22px;color:var(--muted);font-size:15px}.faq-a ol{margin:10px 0 0;padding-left:0;display:flex;flex-direction:column;gap:8px}.faq-a ol li{counter-increment:step;position:relative;padding-left:34px}.faq-a ol li::before{content:counter(step);position:absolute;left:0;top:0;width:24px;height:24px;border-radius:50%;background:rgba(16,185,129,.12);color:var(--primary);font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center}.faq-a ol{counter-reset:step}

/* 新闻 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.3s;display:flex;flex-direction:column}.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}.news-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#e2e8f0}.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}.news-card:hover .thumb img{transform:scale(1.06)}.news-card .body{padding:22px;display:flex;flex-direction:column;flex:1}.news-card .meta{font-size:12px;color:var(--muted);margin-bottom:10px}.news-card .meta .cat{color:var(--primary);font-weight:600;margin-right:8px}.news-card h3{font-size:17px;font-weight:700;margin-bottom:10px;line-height:1.45}.news-card p{font-size:14px;color:var(--muted);flex:1;margin-bottom:16px}.news-card .more{font-size:14px;font-weight:600;color:var(--primary)}

/* 评价 */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.testi-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:32px 28px}.testi-stars{color:#f59e0b;font-size:16px;margin-bottom:16px;letter-spacing:2px}.testi-card .quote{font-size:15px;color:var(--ink);margin-bottom:24px;line-height:1.7}.testi-author{display:flex;align-items:center;gap:12px}.testi-author .av{width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}.testi-author b{display:block;font-size:14.5px}.testi-author span{font-size:13px;color:var(--muted)}

/* CTA */
.cta{position:relative;padding:100px 0;background:var(--grad);color:#fff;text-align:center;overflow:hidden}.cta::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 20% 20%,rgba(255,255,255,.15),transparent 40%),radial-gradient(circle at 80% 80%,rgba(255,255,255,.12),transparent 40%)}.cta .container{position:relative;z-index:2}.cta h2{font-size:42px;font-weight:800;letter-spacing:-.02em;margin-bottom:16px}.cta p{font-size:18px;opacity:.92;margin-bottom:32px}.cta .btn{background:#fff;color:var(--ink);box-shadow:0 10px 30px rgba(0,0,0,.18)}.cta .btn:hover{transform:translateY(-2px)}

/* 页脚 */
.footer{background:var(--dark);color:rgba(255,255,255,.7);padding:64px 0 32px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}.footer-brand img{height:36px;width:auto;margin-bottom:16px}.footer-brand p{font-size:14px;max-width:280px;line-height:1.7}.footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}.footer-links{display:flex;flex-direction:column;gap:10px}.footer-links a{font-size:14px;transition:.2s}.footer-links a:hover{color:var(--primary)}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.5)}

/* ===== 下载页 ===== */
.dl-hero{padding:160px 0 90px;background:radial-gradient(1000px 500px at 80% -10%,rgba(6,182,212,.26),transparent 55%),radial-gradient(800px 500px at 0% 10%,rgba(16,185,129,.2),transparent 55%),var(--dark);color:#fff}.dl-hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}.dl-hero h1{font-size:48px;font-weight:800;letter-spacing:-.03em;margin-bottom:18px}.dl-hero h1 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.dl-hero-sub{font-size:18px;color:rgba(255,255,255,.72);max-width:500px;margin-bottom:28px}.dl-hero-cta{margin-bottom:32px}.dl-meta{display:flex;gap:32px;flex-wrap:wrap}.dl-meta .dm{display:flex;flex-direction:column}.dl-meta .dm b{font-size:20px;font-weight:700}.dl-meta .dm span{font-size:13px;color:rgba(255,255,255,.55)}.versions-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.version-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:32px 28px;display:flex;flex-direction:column;transition:.3s}.version-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}.version-card .v-tag{display:inline-block;align-self:flex-start;font-size:12px;font-weight:700;color:var(--primary);background:rgba(16,185,129,.1);padding:4px 12px;border-radius:999px;margin-bottom:14px}.version-card h3{font-size:20px;font-weight:700;margin-bottom:6px}.version-card .v-size{font-size:14px;color:var(--muted);margin-bottom:20px}.version-card ul{flex:1;display:flex;flex-direction:column;gap:10px;margin-bottom:24px}.version-card ul li{display:flex;align-items:center;gap:10px;font-size:14px}.version-card ul li::before{content:"✓";color:var(--primary);font-weight:700}.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.sys-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:24px;display:flex;gap:14px;align-items:flex-start}.sys-item .si{width:44px;height:44px;border-radius:12px;background:rgba(16,185,129,.12);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}.sys-item b{font-size:15px;display:block;margin-bottom:4px}.sys-item span{font-size:13.5px;color:var(--muted)}

/* ===== 面包屑/页面头 ===== */
.page-head{background:var(--dark);color:#fff;padding:150px 0 64px;position:relative;overflow:hidden}.page-head::after{content:"";position:absolute;inset:0;background-image:radial-gradient(800px 400px at 70% -20%,rgba(6,182,212,.25),transparent 55%)}.page-head .container{position:relative;z-index:2}.page-head h1{font-size:42px;font-weight:800;letter-spacing:-.02em;margin-bottom:14px}.page-head p{font-size:17px;color:rgba(255,255,255,.65);max-width:640px}.breadcrumb{font-size:14px;color:rgba(255,255,255,.6);margin-bottom:18px}.breadcrumb a{color:rgba(255,255,255,.85)}.breadcrumb a:hover{color:var(--primary)}.breadcrumb .sep{margin:0 8px}

/* 文章 */
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:48px}.article-main{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:44px;overflow:hidden}.article-cover{aspect-ratio:16/9;border-radius:var(--r-sm);overflow:hidden;margin-bottom:32px;background:#e2e8f0}.article-cover img{width:100%;height:100%;object-fit:cover}.article-main h1{font-size:30px;font-weight:800;line-height:1.35;margin-bottom:16px}.article-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted);margin-bottom:28px;padding-bottom:24px;border-bottom:1px solid var(--line)}.article-meta .cat{color:var(--primary);font-weight:600}.article-body{font-size:16px;line-height:1.9;color:#334155}.article-body p{margin-bottom:20px}.article-body h2{font-size:22px;font-weight:700;margin:32px 0 14px;color:var(--ink)}.article-body img{border-radius:var(--r-sm);margin:24px 0}.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}.article-nav a{flex:1;font-size:14px;color:var(--ink);display:flex;flex-direction:column;gap:4px;transition:.2s}.article-nav a:hover{color:var(--primary)}.article-nav a.next{text-align:right}.article-nav .nav-label{font-size:12px;color:var(--muted)}.back-list{display:inline-block;margin-top:24px;font-size:14px;color:var(--primary);font-weight:600}.article-sidebar{display:flex;flex-direction:column;gap:20px}.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px}.side-card h3{font-size:16px;font-weight:700;margin-bottom:16px}.side-news a{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);transition:.2s}.side-news a:last-child{border-bottom:none}.side-news a:hover h4{color:var(--primary)}.side-news .thumb{width:64px;height:48px;border-radius:8px;overflow:hidden;flex-shrink:0;background:#e2e8f0}.side-news .thumb img{width:100%;height:100%;object-fit:cover}.side-news h4{font-size:13.5px;font-weight:600;line-height:1.4;transition:.2s}

/* 站点地图页 */
.sitemap-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.sitemap-col{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px}.sitemap-col h3{font-size:17px;font-weight:700;margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--primary);display:inline-block}.sitemap-col ul{display:flex;flex-direction:column;gap:10px}.sitemap-col a{font-size:14.5px;color:var(--ink);display:flex;align-items:center;gap:8px;transition:.2s}.sitemap-col a:hover{color:var(--primary);padding-left:4px}.sitemap-col a::before{content:"›";color:var(--primary);font-weight:700}

/* 404 */
.err-wrap{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:var(--dark);color:#fff;padding:40px}.err-wrap .code{font-size:120px;font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:16px}.err-wrap h1{font-size:28px;margin-bottom:12px}.err-wrap p{color:rgba(255,255,255,.6);margin-bottom:28px}.err-wrap .count{font-size:14px;color:rgba(255,255,255,.5);margin-top:20px}

/* 响应式 */
@media(max-width:992px){.nav-menu{position:fixed;top:74px;left:0;right:0;background:var(--dark);flex-direction:column;align-items:stretch;padding:16px 24px 24px;gap:0;transform:translateY(-120%);transition:.3s;max-height:calc(100vh - 74px);overflow-y:auto}.nav-menu.open{transform:translateY(0)}.nav-item{width:100%}.nav-link{padding:14px 8px;border-bottom:1px solid rgba(255,255,255,.08)}.dropdown{position:static;transform:none;min-width:0;background:rgba(255,255,255,.05);box-shadow:none;opacity:1;visibility:visible;max-height:0;overflow:hidden;transition:max-height .3s;padding:0 8px;border-radius:8px}.nav-item.open .dropdown{max-height:600px;padding:8px}.dropdown a{color:rgba(255,255,255,.85)}.dropdown a:hover{background:rgba(255,255,255,.1)}.dropdown a .dd-sub{color:rgba(255,255,255,.5)}.nav-burger{display:flex}.nav-cta{display:none}.nav-cta.mobile{display:flex;flex-direction:column;margin-top:16px}.hero-inner,.dl-hero-inner{grid-template-columns:1fr}.hero h1{font-size:42px}.hero-visual{order:2}.hero{padding:140px 0 80px}.steps-grid,.features-grid,.scenarios-grid,.pricing-grid,.news-grid,.testi-grid,.versions-grid,.sys-grid,.sitemap-cols{grid-template-columns:repeat(2,1fr)}.data-stats{grid-template-columns:repeat(2,1fr)}.nodes-grid{grid-template-columns:repeat(3,1fr)}.article-layout{grid-template-columns:1fr}.price-card.popular{transform:none}.price-card.popular:hover{transform:translateY(-6px)}.footer-grid{grid-template-columns:1fr 1fr}}

@media(max-width:768px){.section{padding:64px 0}.section-head h2{font-size:30px}.hero h1{font-size:34px}.hero-sub{font-size:16px}.dl-hero h1{font-size:34px}.steps-grid,.features-grid,.scenarios-grid,.pricing-grid,.news-grid,.testi-grid,.versions-grid,.sys-grid,.sitemap-cols,.footer-grid{grid-template-columns:1fr}.nodes-grid{grid-template-columns:repeat(2,1fr)}.data-stats{grid-template-columns:repeat(2,1fr)}.cta h2{font-size:32px}.article-main{padding:24px}.article-main h1{font-size:24px}.phone{width:280px}}

@media(max-width:480px){.hero-stats{gap:20px}.hero-stats .stat b{font-size:24px}.hero-cta .btn{width:100%}.btn-lg{padding:14px 28px}.nodes-grid{grid-template-columns:1fr 1fr}.float-chip{display:none}.section-head h2{font-size:26px}.price-amount{font-size:36px}.err-wrap .code{font-size:80px}}