/* ============================================================
   DESIGN TOKENS
   收敛后的色板：一种主蓝 + 一种暖金，去掉 AI 建站器常见的
   彩虹渐变（teal / purple），阴影改为中性柔光，弱化"发光感"。
   ============================================================ */
:root{
  --seed-primary:#2884ff;
  --seed-secondary:#E8B23A;
  --seed-bg:#F7F6F2;
  --seed-fg:#23262E;
  --seed-surface:#FFFFFF;
  --seed-radius:1.25rem;

  --primary:var(--seed-primary);
  --primary-50:#EBF3FF;
  --primary-100:#D1E6FF;
  --primary-200:#A3CDFF;
  --primary-500:#4D9CFF;
  --primary-600:#2884ff;
  --primary-700:#1F6FE0;
  --primary-800:#1A5DBF;
  --primary-900:#144A99;

  --secondary:var(--seed-secondary);
  --secondary-50:#FBF4E6;
  --secondary-100:#F6E7C4;
  --secondary-200:#EFD49B;
  --secondary-400:#E8B23A;
  --secondary-500:#D99E22;
  --secondary-600:#B9841A;

  --bg:var(--seed-bg);
  --surface:var(--seed-surface);
  --fg:var(--seed-fg);
  --muted:#5C6270;
  --muted-light:#8A909E;
  --border:#E7E4DD;
  --surface-alt:#F1EFEA;

  --font-display:'Poppins','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Nunito','PingFang SC','Microsoft YaHei',sans-serif;

  --type-hero-title:clamp(2rem,3vw + 1rem,4.25rem);
  --type-hero-subtitle:clamp(0.9375rem,0.85vw + 0.75rem,1.375rem);
  --type-hero-badge:clamp(0.8125rem,0.45vw + 0.7rem,1rem);
  --type-h1:clamp(1.625rem,1.5vw + 0.9rem,2.75rem);
  --type-h2:clamp(1.375rem,1.1vw + 0.75rem,2.125rem);
  --type-h3:clamp(1.0625rem,0.75vw + 0.55rem,1.375rem);
  --type-body-lg:clamp(0.9375rem,0.4vw + 0.8rem,1.125rem);
  --type-body:clamp(0.875rem,0.3vw + 0.8rem,1.0625rem);
  --type-nav-link:clamp(0.8125rem,0.3vw + 0.7rem,0.9375rem);
  --type-nav-brand:clamp(1.1875rem,0.45vw + 0.9rem,1.375rem);
  --type-btn:clamp(0.875rem,0.3vw + 0.75rem,1rem);
  --type-stat-num:clamp(2rem,1.8vw + 0.75rem,3.25rem);
  --type-stat-label:clamp(0.75rem,0.35vw + 0.7rem,0.9375rem);
  --type-service-title:clamp(1.05rem,1vw + 0.6rem,1.35rem);
  --type-label:clamp(0.8125rem,0.4vw + 0.6rem,1.0625rem);

  --nav-height:clamp(4rem,8vw,5rem);
  --section-pad:clamp(3.5rem,8vw,6.25rem);
  --content-width:75rem;
  --gutter:clamp(1rem,4vw,2.5rem);
  --radius:var(--seed-radius);
  --radius-sm:0.75rem;
  --radius-lg:1.75rem;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:clamp(0.9375rem,0.6875rem + 0.42vw,1.0625rem);-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{font-family:var(--font-body);font-weight:400;color:var(--fg);background:var(--bg);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%;height:auto}
svg{max-width:100%;height:auto}

/* ---- 照片统一质感：轻微去饱和 + 胶片颗粒，弱化 AI 生成塑料感 ---- */
.img-grain{position:relative}
.img-grain img{filter:saturate(.9) contrast(1.04) brightness(1.01)}
.img-grain::after{
  content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;z-index:2;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity:.06;mix-blend-mode:overlay;
}

/* ---- SVG 线性图标（替代 emoji） ---- */
.ic{width:100%;height:100%;display:block}
.ic-line{stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.ic-fill{fill:currentColor;stroke:none}
.container{width:100%;max-width:var(--content-width);margin:0 auto;padding:0 var(--gutter)}

/* ---- Typography ---- */
.display-text{font-family:var(--font-display);font-weight:600;font-size:var(--type-hero-title);line-height:1.12;letter-spacing:-0.01em}
.h1{font-family:var(--font-display);font-weight:600;font-size:var(--type-h1);line-height:1.15;letter-spacing:-0.02em}
.h2{font-family:var(--font-display);font-weight:600;font-size:var(--type-h2);line-height:1.2;letter-spacing:-0.015em}
.h3{font-family:var(--font-display);font-weight:500;font-size:var(--type-h3);line-height:1.3}
.body-lg{font-size:var(--type-body-lg);line-height:1.65}
.body-text{font-size:var(--type-body);line-height:1.6}
.small-text{font-size:clamp(0.75rem,0.3vw + 0.65rem,0.9375rem);line-height:1.5}
.section-label{font-family:var(--font-display);font-weight:600;font-size:var(--type-label);color:var(--primary-700);letter-spacing:0.06em;text-transform:uppercase;margin-bottom:0.75rem;display:inline-block}
.section-desc{color:var(--muted);max-width:46rem}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:0.5rem;padding:0.9rem 2rem;border-radius:3.125rem;font-family:var(--font-body);font-weight:700;font-size:var(--type-btn);letter-spacing:0.01em;border:2px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(20,30,55,.14)}
.btn-primary{background:var(--primary);color:#fff}
.btn-secondary{background:var(--secondary);color:#3a2c00}
.btn-ghost{background:transparent;color:var(--primary-700);border-color:var(--primary-200)}
.btn-ghost:hover{box-shadow:none;background:var(--primary-50)}
.btn-light{background:#fff;color:var(--primary-700)}
.btn-light:hover{box-shadow:0 8px 18px rgba(0,0,0,.12)}

/* ---- Navbar ---- */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-height);display:flex;align-items:center;background:rgba(247,246,242,.72);backdrop-filter:saturate(150%) blur(12px);transition:background .3s ease,box-shadow .3s ease}
.navbar.scrolled{background:rgba(255,255,255,.92);box-shadow:0 2px 16px rgba(20,30,55,.06)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.nav-brand{display:flex;align-items:center;gap:0.55rem;font-family:var(--font-display);font-weight:700;font-size:var(--type-nav-brand);color:var(--fg)}
.nav-brand .logo-mark{width:2.1rem;height:2.1rem;border-radius:0.65rem;background:var(--primary);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(40,132,255,.28);color:#fff}
.nav-brand .logo-mark svg{width:1.2rem;height:1.2rem}
.nav-links{display:flex;align-items:center;gap:clamp(1rem,2vw,2.25rem);list-style:none}
.nav-links a{font-size:var(--type-nav-link);font-weight:600;color:var(--muted);transition:color .2s ease;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--primary-700)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-0.5rem;height:3px;border-radius:3px;background:var(--secondary-400)}
.nav-cta{display:flex;align-items:center;gap:0.75rem}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;width:2.5rem;height:2.5rem;flex-direction:column;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:1.5rem;height:2px;background:var(--fg);border-radius:2px;transition:.3s}

/* ---- Hero ---- */
.hero{padding-top:calc(var(--nav-height) + clamp(2.5rem,5vw,4.5rem));padding-bottom:var(--section-pad);background:linear-gradient(180deg,#EAF1FB 0%,var(--bg) 58%)}
.hero-grid{display:grid;grid-template-columns:1.05fr 0.95fr;gap:clamp(2rem,4vw,4rem);align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:0.5rem;background:var(--primary-50);color:var(--primary-800);font-weight:700;font-size:var(--type-hero-badge);padding:0.5rem 1rem;border-radius:3rem;border:1px solid var(--primary-100);margin-bottom:1.25rem}
.hero-title{margin-bottom:1.1rem}
.hero-title .accent{color:var(--primary-600)}
.hero-subtitle{font-size:var(--type-hero-subtitle);color:var(--muted);margin-bottom:1.75rem;max-width:34rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:0.85rem;margin-bottom:2.25rem}
.hero-trust{display:flex;flex-wrap:wrap;gap:1.75rem}
.hero-trust-item{display:flex;flex-direction:column}
.hero-trust-item .t{font-family:var(--font-display);font-weight:700;font-size:1.35rem;color:var(--fg);display:flex;align-items:center;gap:0.4rem}
.hero-trust-item .t .dot{width:0.55rem;height:0.55rem;border-radius:50%;background:var(--secondary-400)}
.hero-trust-item .l{font-size:0.85rem;color:var(--muted);margin-top:0.15rem}

.hero-media{position:relative;aspect-ratio:4/5;display:flex;align-items:center;justify-content:center}
.hero-photo-wrap{position:relative;width:100%;height:100%;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 22px 48px rgba(20,30,55,.18)}
.hero-photo{width:100%;height:100%;object-fit:cover}
.hero-media-tag{position:absolute;left:1rem;bottom:1rem;z-index:3;background:rgba(255,255,255,.92);color:var(--fg);font-weight:700;font-size:.82rem;padding:.5rem 1rem;border-radius:2rem;box-shadow:0 6px 16px rgba(0,0,0,.12)}
.hero-report-card{position:absolute;right:-0.75rem;bottom:-1.25rem;z-index:4;width:min(15rem,70%);background:#fff;border:1px solid var(--border);border-radius:1rem;padding:1rem 1.1rem;box-shadow:0 14px 34px rgba(20,30,55,.16)}
.hero-report-card .hr-head{display:flex;align-items:center;gap:.45rem;font-weight:700;font-size:.85rem;color:var(--fg);margin-bottom:.6rem}
.hero-report-card .hr-head .dot{width:.55rem;height:.55rem;border-radius:50%;background:#34C0A8;box-shadow:0 0 0 4px rgba(52,192,168,.18)}
.hero-report-card .hr-row{display:flex;justify-content:space-between;font-size:.8rem;color:var(--muted);padding:.28rem 0;border-top:1px solid var(--surface-alt)}
.hero-report-card .hr-row b{color:var(--fg);font-weight:600}

/* ---- About band ---- */
.about{background:linear-gradient(180deg,var(--bg),#F1EFE9)}
.about-grid{display:grid;grid-template-columns:0.92fr 1.08fr;gap:clamp(1.5rem,4vw,3.5rem);align-items:center}
.about-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 18px 40px rgba(20,30,55,.14)}
.about-media img{width:100%;height:100%;max-height:30rem;object-fit:cover;display:block}
.about-copy .h1{margin-bottom:.9rem}
.about-list{list-style:none;margin-top:1.4rem;display:flex;flex-direction:column;gap:.9rem}
.about-list li{display:flex;align-items:center;gap:.7rem;font-size:.98rem;color:var(--fg);font-weight:600}
.about-list li .ic{width:1.6rem;height:1.6rem;flex:0 0 1.6rem;color:var(--primary-600)}
.founder-quote{position:relative;margin:1.4rem 0 0;padding:1.1rem 1.2rem 1.1rem 1.3rem;background:var(--secondary-50);border-left:4px solid var(--secondary-400);border-radius:.6rem}
.founder-quote .ic{width:1.5rem;height:1.5rem;color:var(--secondary-500);margin-bottom:.4rem}
.founder-quote p{font-size:1rem;line-height:1.7;color:var(--fg);font-style:italic}
.founder-quote cite{display:block;margin-top:.6rem;font-style:normal;font-weight:700;font-size:.9rem;color:var(--muted)}

/* ---- Section shell ---- */
.section{padding:var(--section-pad) 0}
.section-head{text-align:center;max-width:48rem;margin:0 auto clamp(2rem,4vw,3rem)}
.section-head .h1{margin-bottom:0.9rem}
.section-head.center .section-desc{margin:0 auto}

/* ---- Services grid ---- */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1rem,2vw,1.5rem)}
.service-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.6rem 1.4rem;box-shadow:0 4px 16px rgba(20,30,55,.05);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;cursor:pointer;overflow:hidden}
.service-cover{position:relative;margin:-1.6rem -1.4rem 1.2rem;aspect-ratio:16/9;overflow:hidden;background:var(--primary-50)}
.service-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;filter:saturate(.9) contrast(1.04)}
.service-cover::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");opacity:.06;mix-blend-mode:overlay}
.service-card:hover .service-cover img{transform:scale(1.05)}
.service-card .service-cover .service-icon{position:absolute;left:.9rem;bottom:.9rem;margin:0;width:2.6rem;height:2.6rem;background:rgba(255,255,255,.94);box-shadow:0 4px 12px rgba(20,30,55,.16);z-index:3}
.service-card .service-cover .service-icon svg{width:1.3rem;height:1.3rem}
.service-card:hover{transform:translateY(-6px);box-shadow:0 14px 32px rgba(20,30,55,.1);border-color:var(--primary-100)}
.service-icon{width:3.4rem;height:3.4rem;border-radius:1rem;display:flex;align-items:center;justify-content:center;font-size:1.7rem;margin-bottom:1rem;background:var(--primary-50);color:var(--primary-600)}
.service-icon svg{width:1.7rem;height:1.7rem}
.service-card:nth-child(3n+2) .service-icon{background:var(--secondary-100);color:var(--secondary-600)}
.service-card:nth-child(3n) .service-icon{background:#E7F0FF;color:var(--primary-700)}
.service-title{font-family:var(--font-display);font-weight:600;font-size:var(--type-service-title);margin-bottom:0.4rem}
.service-desc{font-size:0.92rem;color:var(--muted);line-height:1.55;margin-bottom:0.4rem}
.service-link{display:inline-flex;align-items:center;gap:0.3rem;font-weight:700;font-size:0.9rem;color:var(--primary-700)}
.service-link .arrow{transition:transform .2s ease}
.service-card:hover .service-link .arrow{transform:translateX(4px)}

/* ---- Service tags ---- */
.service-tags{display:flex;flex-wrap:wrap;gap:.4rem;margin-bottom:.9rem}
.service-tag{font-size:.72rem;font-weight:700;color:var(--primary-700);background:var(--primary-50);padding:.22rem .6rem;border-radius:2rem;letter-spacing:.01em}
.service-card:nth-child(3n+2) .service-tag{background:var(--secondary-100);color:#9a6b00}
.service-card:nth-child(3n) .service-tag{background:#E7F0FF;color:var(--primary-700)}

/* ---- Features（核心能力） ---- */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1.25rem,2.5vw,2rem)}
.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem 1.7rem;box-shadow:0 4px 16px rgba(20,30,55,.05);position:relative;overflow:hidden}
.feature-card .badge-num{font-family:var(--font-display);font-weight:700;font-size:3rem;color:var(--primary-100);line-height:1;position:absolute;top:1.2rem;right:1.4rem}
.feature-icon{width:3.6rem;height:3.6rem;border-radius:1.1rem;background:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.8rem;margin-bottom:1.1rem;box-shadow:0 6px 14px rgba(20,30,55,.12);color:#fff}
.feature-icon svg{width:1.9rem;height:1.9rem}
.feature-card:nth-child(2) .feature-icon{background:linear-gradient(135deg,var(--secondary-400),var(--secondary-600))}
.feature-card:nth-child(3) .feature-icon{background:linear-gradient(135deg,var(--primary-600),var(--primary-800))}
.feature-card h3{font-family:var(--font-display);font-weight:600;font-size:1.3rem;margin-bottom:0.6rem}
.feature-card p{font-size:0.95rem;color:var(--muted);line-height:1.6}
.feature-card ul{list-style:none;margin-top:0.9rem;display:flex;flex-direction:column;gap:0.45rem}
.feature-card li{font-size:0.88rem;color:var(--fg);display:flex;align-items:center;gap:0.5rem}
.feature-card li::before{content:"";width:0.5rem;height:0.5rem;border-radius:50%;background:var(--primary-500);flex:0 0 0.5rem}
.feature-card:nth-child(2) li::before{background:var(--secondary-500)}
.feature-card:nth-child(3) li::before{background:var(--primary-700)}

/* ---- 怎么用（流程） ---- */
.how{background:linear-gradient(180deg,var(--bg),#F1EFE9)}
.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1.25rem,2.5vw,2rem)}
.how-step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem 1.7rem;box-shadow:0 4px 16px rgba(20,30,55,.05);position:relative}
.how-num{display:inline-flex;align-items:center;justify-content:center;width:2.6rem;height:2.6rem;border-radius:50%;background:var(--primary);color:#fff;font-family:var(--font-display);font-weight:700;font-size:1.2rem;margin-bottom:1rem}
.how-step h3{font-family:var(--font-display);font-weight:600;font-size:1.25rem;margin-bottom:.6rem}
.how-step p{font-size:.95rem;color:var(--muted);line-height:1.65}

/* ---- AI detail ---- */
.ai-section{background:linear-gradient(180deg,var(--bg),#EFF3FB)}
.ai-detail-grid{display:grid;grid-template-columns:0.92fr 1.08fr;gap:clamp(1.5rem,3vw,3rem);align-items:center;margin-top:clamp(1.5rem,3vw,2.5rem)}
.ai-chat{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.7rem 1.5rem 1.4rem;box-shadow:0 8px 24px rgba(20,30,55,.08);position:relative;overflow:hidden}
.ai-chat::before{content:"";position:absolute;top:0;left:0;right:0;height:.4rem;background:var(--primary)}
.ai-chat-head{display:flex;align-items:center;gap:.6rem;margin-bottom:1.1rem}
.ai-chat-head .dot{width:.7rem;height:.7rem;border-radius:50%;background:#34C0A8;box-shadow:0 0 0 4px rgba(52,192,168,.18)}
.ai-chat-head .nm{font-weight:700;font-size:.95rem;color:var(--fg)}
.ai-chat-head .st{font-size:.74rem;color:#34C0A8;font-weight:700;margin-left:auto}
.bubble{max-width:86%;padding:.7rem 1rem;border-radius:1.05rem;font-size:.88rem;line-height:1.55;margin-bottom:.7rem}
.bubble.user{background:var(--primary-50);color:var(--primary-800);margin-left:auto;border-bottom-right-radius:.3rem}
.bubble.bot{background:var(--surface-alt);color:var(--fg);border-bottom-left-radius:.3rem}
.bubble.bot strong{color:var(--primary-700);font-weight:700}
.ai-caps{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1rem,2vw,1.4rem)}
.ai-cap{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.35rem 1.2rem;box-shadow:0 4px 14px rgba(20,30,55,.05);transition:transform .2s ease,box-shadow .2s ease}
.ai-cap:hover{transform:translateY(-4px);box-shadow:0 12px 26px rgba(20,30,55,.1)}
.ai-cap .ic{width:2.6rem;height:2.6rem;border-radius:.8rem;background:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:.8rem;color:#fff}
.ai-cap .ic svg{width:1.4rem;height:1.4rem}
.ai-cap:nth-child(2) .ic{background:var(--secondary)}
.ai-cap:nth-child(3) .ic{background:var(--primary-700)}
.ai-cap:nth-child(4) .ic{background:var(--secondary-600)}
.ai-cap h4{font-family:var(--font-display);font-weight:600;font-size:1.02rem;margin-bottom:.3rem}
.ai-cap p{font-size:.82rem;color:var(--muted);line-height:1.5}

/* ---- AI flow 流程条 ---- */
.ai-flow{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.6rem;margin-top:clamp(1.5rem,3vw,2.5rem);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.4rem 1.2rem;box-shadow:0 4px 16px rgba(20,30,55,.05)}
.ai-flow .step{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:.92rem;color:var(--fg)}
.ai-flow .step .n{width:1.8rem;height:1.8rem;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.85rem;flex:0 0 1.8rem}
.ai-flow .arrow{color:var(--muted-light);font-weight:700;font-size:1.1rem}

/* ---- AI band（备用横幅，供后续区块复用） ---- */
.ai-band{background:linear-gradient(120deg,var(--primary-600),var(--primary-800));border-radius:var(--radius-lg);padding:clamp(2rem,4vw,3rem);color:#fff;display:grid;grid-template-columns:auto 1fr auto;gap:clamp(1.25rem,3vw,2.5rem);align-items:center;box-shadow:0 14px 34px rgba(20,30,55,.18)}
.ai-band .ai-emoji{width:4.5rem;height:4.5rem;border-radius:1.3rem;background:rgba(255,255,255,.15);display:flex;align-items:center;justify-content:center;font-size:2.3rem}
.ai-band h3{font-family:var(--font-display);font-weight:600;font-size:clamp(1.4rem,2vw,2rem);margin-bottom:0.4rem}
.ai-band p{font-size:1rem;opacity:.92;max-width:34rem}
.ai-band .btn-light{white-space:nowrap}

/* ---- 已开通城市 ---- */
.city{background:linear-gradient(180deg,#F1EFE9,var(--bg))}
.city-inner{display:grid;grid-template-columns:0.9fr 1.1fr;gap:clamp(1.5rem,4vw,3.5rem);align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:clamp(1.75rem,4vw,3rem);box-shadow:0 6px 22px rgba(20,30,55,.05)}
.city-text .h2{margin-bottom:.7rem}
.city-text .body-lg{color:var(--muted);max-width:28rem}
.city-chips{display:flex;flex-wrap:wrap;gap:.6rem}
.city-chips span{font-weight:700;font-size:.95rem;color:var(--fg);background:var(--surface-alt);border:1px solid var(--border);padding:.55rem 1.05rem;border-radius:2rem}
.city-chips .city-more{color:var(--muted);background:transparent;border-style:dashed}

/* ---- Stats 数字统计 ---- */
.stats{background:linear-gradient(180deg,#F1EFE9,var(--bg))}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(1rem,2vw,2rem);text-align:center}
.stat-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem 1rem;box-shadow:0 4px 16px rgba(20,30,55,.05)}
.stat-number{font-family:var(--font-display);font-weight:700;font-size:var(--type-stat-num);color:var(--primary-600);line-height:1;display:flex;align-items:baseline;justify-content:center;gap:0.1rem}
.stat-number .unit{font-size:var(--type-stat-label);color:var(--secondary-600);font-weight:700}
.stat-label{font-size:var(--type-stat-label);color:var(--muted);margin-top:0.6rem;font-weight:600}

/* ---- Trust (六层) ---- */
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1rem,2vw,1.5rem)}
.trust-item{display:flex;gap:0.9rem;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.3rem;box-shadow:0 4px 14px rgba(20,30,55,.04)}
.trust-item .ti-ic{width:2.6rem;height:2.6rem;border-radius:0.8rem;background:var(--primary-50);display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex:0 0 2.6rem;color:var(--primary-600)}
.trust-item .ti-ic svg{width:1.5rem;height:1.5rem}
.trust-item h4{font-family:var(--font-display);font-weight:600;font-size:1.05rem;margin-bottom:0.25rem}
.trust-item p{font-size:0.85rem;color:var(--muted);line-height:1.5}

/* ---- Testimonials ---- */
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1.25rem,2.5vw,2rem)}
.testimonial-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem 1.7rem;box-shadow:0 4px 16px rgba(20,30,55,.05);display:flex;flex-direction:column}
.testimonial-stars{color:var(--secondary-500);font-size:1.1rem;letter-spacing:2px;margin-bottom:0.9rem}
.testimonial-text{font-size:0.98rem;line-height:1.7;color:var(--fg);flex:1;margin-bottom:1.4rem}
.testimonial-author{display:flex;align-items:center;gap:0.8rem}
.testimonial-avatar{width:3.25rem;height:3.25rem;border-radius:50%;object-fit:cover;box-shadow:0 6px 16px rgba(20,30,55,.14);background:var(--surface-alt);filter:saturate(.92) contrast(1.03)}
.testimonial-name{font-weight:700;font-size:0.98rem}
.testimonial-pet{font-size:0.82rem;color:var(--muted)}

/* ---- FAQ ---- */
.faq{background:linear-gradient(180deg,var(--bg),#F1EFE9)}
.faq-list{max-width:46rem;margin:0 auto;display:flex;flex-direction:column;gap:.85rem}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:0 3px 12px rgba(20,30,55,.04)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1.15rem 1.4rem;font-weight:700;font-size:1.02rem;color:var(--fg);font-family:var(--font-display)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-ic{position:relative;width:1.1rem;height:1.1rem;flex:0 0 1.1rem}
.faq-ic::before,.faq-ic::after{content:"";position:absolute;background:var(--primary-600);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.faq-ic::before{top:50%;left:0;right:0;height:2px;transform:translateY(-50%)}
.faq-ic::after{left:50%;top:0;bottom:0;width:2px;transform:translateX(-50%)}
.faq-item[open] .faq-ic::after{transform:translateX(-50%) scaleY(0);opacity:0}
.faq-body{padding:0 1.4rem 1.25rem;font-size:.95rem;line-height:1.7;color:var(--muted)}

/* ---- CTA ---- */
.cta{background:linear-gradient(135deg,var(--primary-700),var(--primary-900));border-radius:var(--radius-lg);padding:clamp(2.5rem,5vw,4rem);color:#fff;text-align:center;box-shadow:0 18px 44px rgba(20,30,55,.18)}
.cta h2{color:#fff;margin-bottom:0.8rem}
.cta p{opacity:.9;font-size:1.05rem;margin-bottom:1.75rem;max-width:40rem;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;gap:0.85rem;justify-content:center;flex-wrap:wrap}
.cta-pill{display:inline-flex;align-items:center;gap:0.5rem;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);border-radius:3rem;padding:0.55rem 1.2rem;font-size:0.95rem;font-weight:600;margin-top:1.5rem}

/* ---- Footer ---- */
.footer{background:var(--fg);color:#D7DEEA;padding:clamp(3rem,5vw,4rem) 0 2rem}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:clamp(1.5rem,3vw,3rem);margin-bottom:2.5rem}
.footer-brand .nav-brand{color:#fff;margin-bottom:0.9rem}
.footer-brand p{font-size:0.9rem;color:#A9B4C6;max-width:22rem;line-height:1.6}
.footer-heading{font-family:var(--font-display);font-weight:600;color:#fff;font-size:1.05rem;margin-bottom:1rem}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:0.65rem}
.footer-links a{font-size:0.9rem;color:#A9B4C6;transition:color .2s ease}
.footer-links a:hover{color:var(--secondary-400)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:1.5rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:0.75rem;font-size:0.82rem;color:#8E9AAE}
.footer-beian a{color:#8E9AAE}
.footer-beian a:hover{color:var(--secondary-400)}

/* ---- Toast ---- */
.toast{position:fixed;left:50%;bottom:2.5rem;transform:translateX(-50%) translateY(20px);background:var(--fg);color:#fff;padding:0.9rem 1.5rem;border-radius:3rem;font-size:0.95rem;font-weight:600;box-shadow:0 12px 30px rgba(0,0,0,.25);opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease;z-index:200}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---- Reveal animation ---- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1);margin-top: 2rem;}
.reveal.visible{opacity:1;transform:none}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}
.reveal-delay-4{transition-delay:.4s}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---- Responsive ---- */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:2.5rem}
  .hero-media{max-width:24rem;margin:0 auto}
  .services-grid,.features-grid,.how-grid,.trust-grid,.testimonials-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .ai-detail-grid{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr;gap:2rem}
  .about-media{max-width:26rem;margin:0 auto;width:100%}
  .city-inner{grid-template-columns:1fr;gap:1.5rem}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .nav-links,.nav-cta .btn{display:none}
  .nav-toggle{display:flex}
  .navbar.open .nav-links{display:flex;position:absolute;top:var(--nav-height);left:0;right:0;flex-direction:column;background:#fff;padding:1.25rem var(--gutter);gap:1.1rem;box-shadow:0 12px 30px rgba(20,30,55,.12);border-top:1px solid var(--border)}
  .services-grid,.features-grid,.how-grid,.trust-grid,.testimonials-grid,.stats-grid,.ai-caps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .ai-flow{flex-direction:column;gap:.7rem}
  .ai-flow .arrow{transform:rotate(90deg);display:inline-block}
  .hero-trust{gap:1.1rem}
  .hero-report-card{right:0.5rem}
}

/* ---- 法律页（隐私政策 / 用户协议） ---- */
.legal-page{padding-top:calc(var(--nav-height) + 2.5rem);padding-bottom:var(--section-pad);background:linear-gradient(180deg,#EAF1FB,var(--bg))}
.legal-wrap{max-width:52rem;margin:0 auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:clamp(1.75rem,4vw,3.25rem);box-shadow:0 8px 24px rgba(20,30,55,.06)}
.legal-wrap h1{font-family:var(--font-display);font-weight:700;font-size:var(--type-h1);margin-bottom:.35rem;color:var(--fg)}
.legal-wrap .legal-updated{color:var(--muted);font-size:.85rem;margin-bottom:1.75rem}
.legal-wrap h2{font-family:var(--font-display);font-weight:600;font-size:1.25rem;margin:2rem 0 .7rem;color:var(--primary-800)}
.legal-wrap h3{font-weight:700;font-size:1rem;margin:1.25rem 0 .5rem;color:var(--fg)}
.legal-wrap p{font-size:.95rem;line-height:1.8;color:var(--fg);margin-bottom:.9rem}
.legal-wrap ul,.legal-wrap ol{margin:0 0 1rem 1.25rem}
.legal-wrap li{font-size:.93rem;line-height:1.75;margin-bottom:.4rem;color:var(--fg)}
.legal-wrap a{color:var(--primary-700);text-decoration:underline}
.legal-back{display:inline-flex;align-items:center;gap:.4rem;margin-bottom:1.5rem;font-weight:700;color:var(--primary-700)}

/* ---- 小程序相关展示：暂时隐藏 ---- */
/* 说明：小程序尚未对外发布，官网凡涉及小程序的功能展示统一加 .mp-hide 隐藏。
   需要恢复时，删除对应元素上的 mp-hide 类即可（元素与样式都保留）。 */
.mp-hide{display:none !important;}

/* ---- CTA 小程序码卡片 ---- */
.cta-qr{display:inline-flex;flex-direction:column;align-items:center;gap:.5rem;background:#fff;padding:1rem 1rem .85rem;border-radius:1.1rem;box-shadow:0 14px 34px rgba(0,0,0,.2);margin-bottom:1.25rem}
.cta-qr img{width:184px;height:184px;border-radius:.6rem;display:block}
.cta-qr .qr-cap{color:var(--primary-800);font-weight:700;font-size:.98rem;margin-top:.15rem}
.cta-qr .qr-sub{color:var(--muted-light);font-size:.78rem;margin-top:-.15rem}
@media (max-width:680px){ .cta-qr img{width:160px;height:160px} }