/* ================================================================
   瀚海软件 — 天空蓝 · 干净工整
   Desktop/mobile nav split · Merged about+stats · Clean contact
   ================================================================ */

:root {
  --sky-100: #E3F2FD;
  --sky-200: #BBDEFB;
  --sky-300: #90CAF9;
  --sky-400: #64B5F6;
  --sky-500: #42A5F5;
  --sky-600: #2196F3;
  --sky-700: #1E88E5;
  --sky-800: #1565C0;
  --grad-sky: linear-gradient(135deg, #64B5F6, #42A5F5, #1E88E5);
  --c-ink: #1A2332;
  --c-ink2: #4A5568;
  --c-ink3: #8899AA;
  --c-bg: #FFFFFF;
  --c-bg2: #F7FAFD;
  --c-bg3: #EDF3FA;
  --c-border: #DCE8F2;
  --c-shadow: rgba(21,101,192,0.06);
  --c-shadow-md: rgba(21,101,192,0.1);
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --font: -apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --max: 1140px;
  --nav-h: 68px;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h);font-size:16px}
body{font-family:var(--font);color:var(--c-ink);background:var(--c-bg);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
::selection{background:rgba(66,165,245,0.18)}
.container{max-width:var(--max);margin:0 auto;padding:0 28px}

/* ================================================================
   BREADCRUMB
   ================================================================ */
.breadcrumb{
  padding:var(--nav-h) 0 14px;background:var(--c-bg2);
  border-bottom:1px solid var(--c-border);display:none;
}
.breadcrumb ol{
  list-style:none;display:flex;align-items:center;
  gap:10px;font-size:.76rem;
}
.breadcrumb li{display:flex;align-items:center;gap:10px}
.breadcrumb li+li::before{content:'›';color:var(--c-ink3);font-size:1rem;padding:0 2px}
.breadcrumb a{color:var(--sky-600);font-weight:500}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span{color:var(--c-ink3)}

/* ================================================================
   HEADER
   ================================================================ */
.header{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);background:rgba(255,255,255,0.9);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid transparent;transition:all .3s}
.header.scrolled{border-color:var(--c-border);box-shadow:0 1px 8px var(--c-shadow)}
.header-row{display:flex;align-items:center;justify-content:space-between;height:100%}

.brand{display:flex;align-items:center;gap:10px;color:var(--sky-500);z-index:1}
.brand-icon{width:34px;height:34px;flex-shrink:0;border-radius:8px;overflow:hidden}
.brand-icon img,.brand-icon svg{width:100%;height:100%;display:block;object-fit:contain}
.brand-text{font-size:1.05rem;font-weight:700;color:var(--c-ink);letter-spacing:-.2px}

/* Desktop nav */
.nav-desk{display:flex;gap:2px}
.nav-link{padding:8px 18px;font-size:.85rem;font-weight:500;color:var(--c-ink2);border-radius:6px;transition:all .2s;white-space:nowrap}
.nav-link:hover,.nav-link.active{color:var(--sky-700);background:var(--sky-100)}

/* Mobile nav overlay (hidden on desktop) */
.nav-mobile{display:none}

/* Hamburger */
.menu-btn{display:none;flex-direction:column;gap:5px;padding:10px;background:none;border:none;cursor:pointer;z-index:101;position:relative}
.menu-btn span{display:block;width:22px;height:2px;background:var(--c-ink);border-radius:2px;transition:all .3s}
.menu-btn.active span:first-child{transform:translateY(7px) rotate(45deg)}
.menu-btn.active span:nth-child(2){opacity:0}
.menu-btn.active span:last-child{transform:translateY(-7px) rotate(-45deg)}

/* ================================================================
   BUTTONS
   ================================================================ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 34px;font-size:.9rem;font-weight:600;border:none;border-radius:8px;cursor:pointer;transition:all .25s var(--ease-out);letter-spacing:-.2px}
.btn-blue{background:var(--grad-sky);color:#fff;box-shadow:0 4px 18px rgba(30,136,229,0.2)}
.btn-blue:hover{box-shadow:0 8px 28px rgba(30,136,229,0.3);transform:translateY(-2px)}
.btn-white{background:var(--c-bg);color:var(--sky-700);box-shadow:0 0 0 1.5px var(--c-border)}
.btn-white:hover{box-shadow:0 0 0 1.5px var(--sky-400),0 4px 14px var(--c-shadow-md);transform:translateY(-2px)}
.btn-full{width:100%}

/* ================================================================
   SECTION COMMON
   ================================================================ */
section{padding:100px 0;position:relative}
.s-head{text-align:center;margin-bottom:56px}
.s-tag{display:inline-block;font-size:.68rem;font-weight:700;letter-spacing:2.5px;color:var(--sky-600);margin-bottom:14px;text-transform:uppercase}
.s-title{font-size:2rem;font-weight:800;letter-spacing:-.8px;color:var(--c-ink);margin-bottom:12px}
.txt-blue{background:var(--grad-sky);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.s-desc{font-size:.92rem;color:var(--c-ink3);max-width:420px;margin:0 auto}

[data-animate]{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
[data-animate].visible{opacity:1;transform:translateY(0)}
[data-delay="80"]{transition-delay:.08s}[data-delay="120"]{transition-delay:.12s}[data-delay="150"]{transition-delay:.15s}[data-delay="160"]{transition-delay:.16s}[data-delay="240"]{transition-delay:.24s}[data-delay="320"]{transition-delay:.32s}[data-delay="360"]{transition-delay:.36s}[data-delay="400"]{transition-delay:.4s}[data-delay="480"]{transition-delay:.48s}

/* ================================================================
   HERO
   ================================================================ */
.hero{min-height:100vh;display:flex;align-items:center;padding-top:var(--nav-h);overflow:hidden;background:linear-gradient(180deg,#E8F4FD 0%,#F2F8FF 40%,#FFFFFF 100%)}
.hero-bg{position:absolute;inset:0;pointer-events:none;z-index:0}
.hero-blob{position:absolute;border-radius:50%;filter:blur(110px)}
.hero-blob--1{top:-15%;right:-8%;width:600px;height:600px;background:var(--sky-400);opacity:.12;animation:blobFloat 16s ease-in-out infinite}
.hero-blob--2{bottom:-10%;left:-5%;width:450px;height:450px;background:var(--sky-300);opacity:.14;animation:blobFloat 20s ease-in-out infinite reverse}
@keyframes blobFloat{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(30px,-30px) scale(1.08)}66%{transform:translate(-20px,20px) scale(0.95)}}
.hero-dots{position:absolute;inset:0;background-image:radial-gradient(rgba(66,165,245,0.05) 1px,transparent 1px);background-size:32px 32px;mask-image:radial-gradient(ellipse 70% 70% at 50% 40%,black 30%,transparent 70%);-webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 40%,black 30%,transparent 70%)}

.hero-body{position:relative;z-index:1;max-width:680px;margin:0 auto;text-align:center;padding:48px 0}
.hero-chip{display:inline-block;padding:7px 20px;background:var(--sky-100);color:var(--sky-700);border-radius:100px;font-size:.78rem;font-weight:600;letter-spacing:.5px;margin-bottom:28px}
.hero-title{font-size:2.6rem;font-weight:800;line-height:1.3;letter-spacing:-1px;color:var(--c-ink);margin-bottom:20px}
.hero-desc{font-size:.98rem;color:var(--c-ink2);line-height:1.8;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:48px}
.hero-trust{display:flex;gap:40px;justify-content:center;flex-wrap:wrap}
.trust-item{display:flex;align-items:baseline;gap:6px;font-size:.82rem;color:var(--c-ink3)}
.trust-item strong{font-size:1.3rem;font-weight:800;background:var(--grad-sky);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* ================================================================
   ABOUT (merged with stats)
   ================================================================ */
.about{background:var(--c-bg2);padding-bottom:60px}
.about-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;max-width:960px;margin:0 auto}
.about-text p{font-size:.92rem;color:var(--c-ink2);line-height:1.85;margin-bottom:16px}
.about-text strong{color:var(--sky-600);font-weight:700}
.link-arrow{display:inline-flex;align-items:center;gap:6px;margin-top:8px;font-size:.88rem;font-weight:600;color:var(--sky-600);transition:gap .25s}
.link-arrow:hover{gap:12px}

.about-cards{display:flex;flex-direction:column;gap:16px}
.a-card{display:flex;align-items:flex-start;gap:16px;padding:22px 24px;background:var(--c-bg);border-radius:var(--radius-lg);border:1px solid var(--c-border);transition:all .3s}
.a-card:hover{border-color:var(--sky-300);box-shadow:0 8px 28px var(--c-shadow-md);transform:translateY(-2px)}
.a-card-icon{flex-shrink:0;width:40px;height:40px;color:var(--sky-500)}
.a-card-icon svg{width:100%;height:100%}
.a-card h3{font-size:.9rem;font-weight:700;color:var(--c-ink);margin-bottom:3px}
.a-card p{font-size:.8rem;color:var(--c-ink3);line-height:1.5}

/* Stats inside about */
.about-stats{display:flex;align-items:center;justify-content:center;gap:48px;margin-top:64px;padding:36px 40px;background:var(--c-bg);border-radius:var(--radius-lg);border:1px solid var(--c-border)}
.stat-item{display:flex;align-items:baseline;gap:3px}
.stat-item strong{font-size:1.8rem;font-weight:800;background:var(--grad-sky);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.stat-item span{font-size:.9rem;font-weight:700;color:var(--sky-500)}
.stat-item small{font-size:.7rem;color:var(--c-ink3);margin-left:6px;letter-spacing:.5px}
.stat-sep{width:1px;height:32px;background:var(--c-border)}

/* ================================================================
   SERVICES
   ================================================================ */
.services{background:var(--c-bg)}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc-card{padding:32px 26px;background:var(--c-bg);border-radius:var(--radius-lg);border:1px solid var(--c-border);transition:all .35s ease;position:relative;overflow:hidden}
.svc-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-sky);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease-out)}
.svc-card:hover{border-color:var(--sky-300);box-shadow:0 12px 36px var(--c-shadow-md);transform:translateY(-3px)}
.svc-card:hover::before{transform:scaleX(1)}
.svc-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.svc-icon{width:48px;height:48px;color:var(--sky-500);flex-shrink:0}
.svc-icon svg{width:100%;height:100%}
.svc-idx{font-size:.7rem;font-weight:700;color:var(--c-border);letter-spacing:2px;font-family:monospace}
.svc-card h3{font-size:1rem;font-weight:700;color:var(--c-ink);margin-bottom:8px}
.svc-card>p{font-size:.84rem;color:var(--c-ink2);line-height:1.65;margin-bottom:14px}
.svc-scene{display:block;font-size:.74rem;color:var(--c-ink3);padding-top:14px;border-top:1px solid var(--c-border)}

/* ================================================================
   SCENES
   ================================================================ */
.scenes{background:var(--c-bg2)}
.scenes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1000px;margin:0 auto}
.scene-card{padding:32px 28px;background:var(--c-bg);border-radius:var(--radius-lg);border:1px solid var(--c-border);transition:all .35s ease}
.scene-card:hover{border-color:var(--sky-300);box-shadow:0 10px 32px var(--c-shadow-md);transform:translateY(-3px)}
.scene-visual{margin-bottom:20px}
.scene-visual svg{width:100%;max-width:240px;height:auto;margin:0 auto;display:block}
.scene-card h3{font-size:1rem;font-weight:700;color:var(--c-ink);margin-bottom:10px}
.scene-card p{font-size:.84rem;color:var(--c-ink2);line-height:1.7;margin-bottom:16px}

/* ================================================================
   PLAN
   ================================================================ */
.plan{background:var(--c-bg3)}
.plan-steps{display:flex;justify-content:space-between;max-width:880px;margin:0 auto;position:relative}
.plan-line{position:absolute;top:28px;left:0;width:100%;overflow:hidden;pointer-events:none}
.plan-line svg{width:100%;height:60px;color:var(--sky-400)}
.plan-item{text-align:center;flex:1;padding:0 10px;position:relative;z-index:1}
.plan-num{width:50px;height:50px;margin:0 auto 14px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.82rem;font-weight:800;color:var(--sky-600);background:var(--c-bg);border:2px solid var(--c-border);transition:all .35s}
.plan-item:hover .plan-num{border-color:var(--sky-500);background:var(--sky-100);transform:scale(1.1);box-shadow:0 4px 16px rgba(66,165,245,0.15)}
.plan-item h4{font-size:.9rem;font-weight:700;margin-bottom:6px;color:var(--c-ink)}
.plan-item p{font-size:.76rem;color:var(--c-ink3);line-height:1.55;max-width:140px;margin:0 auto}

/* ================================================================
   CONTACT
   ================================================================ */
.contact{background:var(--c-bg)}
.contact-row{display:grid;grid-template-columns:1fr 1.3fr;gap:36px;max-width:960px;margin:0 auto}
.cinfo-card{padding:36px 32px;background:var(--c-bg2);border-radius:var(--radius-lg);border:1px solid var(--c-border)}
.cinfo-card h3{font-size:1.05rem;font-weight:700;margin-bottom:24px;color:var(--c-ink)}
.cinfo-row{display:flex;gap:14px;align-items:flex-start;margin-bottom:22px}
.cinfo-row svg{flex-shrink:0;width:18px;height:18px;margin-top:2px}
.cinfo-row small{display:block;font-size:.7rem;color:var(--c-ink3);text-transform:uppercase;letter-spacing:1px;margin-bottom:2px}
.cinfo-row strong{display:block;font-size:.88rem;font-weight:600;color:var(--c-ink)}

.c-form{display:flex;flex-direction:column;gap:16px}
.c-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.c-field input,.c-field select,.c-field textarea{width:100%;padding:13px 18px;font-size:.86rem;font-family:var(--font);color:var(--c-ink);background:var(--c-bg);border:1.5px solid var(--c-border);border-radius:10px;outline:none;transition:all .25s}
.c-field input:focus,.c-field select:focus,.c-field textarea:focus{border-color:var(--sky-500);box-shadow:0 0 0 4px rgba(66,165,245,0.08)}
.c-field textarea{resize:vertical;min-height:100px}
.c-field input::placeholder,.c-field textarea::placeholder{color:#B0BEC5}
.c-field select{appearance:none;cursor:pointer;color:#B0BEC5;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238899AA' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.c-field select:valid,.c-field select:focus{color:var(--c-ink)}
.c-note{margin-top:4px;text-align:center;font-size:.74rem;color:var(--c-ink3)}

/* ================================================================
   FOOTER
   ================================================================ */
.footer{background:var(--c-ink);color:rgba(255,255,255,.6);padding:56px 0 24px}
.ft-grid{display:grid;grid-template-columns:1.2fr 0.8fr 0.8fr 0.9fr 1.2fr;gap:32px;margin-bottom:40px}
.ft-logo{font-size:1rem;font-weight:800;color:#fff;display:block;margin-bottom:8px}
.ft-brand p{font-size:.82rem;line-height:1.6;max-width:220px}
.ft-nav h4,.ft-follow h4{font-size:.76rem;font-weight:700;color:#fff;margin-bottom:14px;text-transform:uppercase;letter-spacing:1px}
.ft-nav a,.ft-nav span{display:block;font-size:.82rem;margin-bottom:10px;transition:color .25s}
.ft-nav a:hover{color:#fff}
.ft-follow{text-align:center}
.ft-follow-row{display:flex;gap:18px;justify-content:center}
.ft-qr{text-align:center}
.qr-box{display:inline-block;padding:6px;background:#fff;border-radius:var(--radius);margin-bottom:8px;line-height:0}
.qr-box img{display:block;width:100px;height:100px;border-radius:5px}
.ft-qr>span{display:block;font-size:.7rem;color:rgba(255,255,255,.45);letter-spacing:.5px;white-space:nowrap}
.ft-bottom{display:flex;justify-content:space-between;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);font-size:.72rem;color:rgba(255,255,255,.3)}

/* ================================================================
   SIDEBAR (PC only)
   ================================================================ */
.sidebar{
  position:fixed;right:24px;bottom:80px;z-index:200;
  display:flex;flex-direction:column;gap:10px;
}
.sb-btn{
  display:flex;align-items:center;gap:8px;
  padding:10px 18px;
  border-radius:10px;
  border:1.5px solid var(--c-border);
  background:var(--c-bg);
  color:var(--c-ink2);
  cursor:pointer;
  font-size:.82rem;font-weight:500;font-family:var(--font);
  box-shadow:0 2px 12px var(--c-shadow);
  transition:all .25s var(--ease-out);
  white-space:nowrap;
}
.sb-btn svg{width:18px;height:18px;flex-shrink:0}
.sb-btn:hover{
  border-color:var(--sky-400);color:var(--sky-600);
  box-shadow:0 4px 20px rgba(66,165,245,0.18);
  transform:translateY(-2px);
}
.sb-btn.sb-top{opacity:0;pointer-events:none;transform:translateY(12px);transition:opacity .35s,transform .35s var(--ease-out),border-color .25s,color .25s,box-shadow .25s}
.sb-btn.sb-top.visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.sb-btn.sb-top:hover{transform:translateY(-2px)}
.sb-btn.sb-chat{
  background:var(--grad-sky);color:#fff;border:none;
  box-shadow:0 4px 18px rgba(30,136,229,0.25);
}
.sb-btn.sb-chat:hover{
  box-shadow:0 6px 24px rgba(30,136,229,0.35);
  transform:translateY(-2px);color:#fff;
}

/* ================================================================
   MOBILE BOTTOM BAR (mobile only)
   ================================================================ */
.mobile-bar{display:none}

/* ================================================================
   FAQ
   ================================================================ */
.faq{background:var(--c-bg2)}
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{padding:22px 28px;background:var(--c-bg);border-radius:var(--radius);border:1px solid var(--c-border);transition:all .25s}
.faq-item:hover{border-color:var(--sky-300)}
.faq-item summary{font-size:.95rem;font-weight:600;color:var(--c-ink);cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;user-select:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';font-size:1.3rem;font-weight:300;color:var(--sky-500);transition:transform .25s;flex-shrink:0;margin-left:16px}
.faq-item[open] summary::after{content:'−';transform:rotate(180deg)}
.faq-item[open]{border-color:var(--sky-300);box-shadow:0 4px 16px rgba(66,165,245,0.06)}
.faq-item p{padding-top:14px;font-size:.86rem;color:var(--c-ink2);line-height:1.75;border-top:1px solid var(--c-border);margin-top:14px}

/* ================================================================
   TOAST
   ================================================================ */
.toast{position:fixed;bottom:40px;left:50%;transform:translateX(-50%) translateY(16px);padding:14px 28px;background:var(--c-ink);color:#fff;border-radius:10px;font-size:.84rem;font-weight:600;z-index:300;opacity:0;pointer-events:none;transition:all .4s var(--ease-out)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media(max-width:1024px){
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .scenes-grid{grid-template-columns:1fr;max-width:520px}
  .ft-grid{grid-template-columns:1fr 1fr 1fr}
  .ft-follow{grid-column:1/-1;text-align:center}
  .ft-follow-row{justify-content:center}
  .plan-steps{flex-wrap:wrap;gap:28px;justify-content:center}
  .plan-item{flex:0 0 auto;min-width:150px}
  .plan-line{display:none}
  .sidebar{right:16px;bottom:80px}
  .sb-btn{padding:8px 14px;font-size:.78rem}
  .sb-btn svg{width:16px;height:16px}
}

@media(max-width:768px){
  html{font-size:15px}
  section{padding:72px 0}

  /* Hide desktop nav, show hamburger */
  .nav-desk{display:none}
  .menu-btn{display:flex}

  /* Mobile overlay */
  .nav-mobile{
    display:block;
    position:fixed;inset:0;z-index:250;
    pointer-events:none;
  }
  .nav-mobile.open{pointer-events:auto}

  /* Backdrop */
  .nav-backdrop{
    position:absolute;inset:0;
    background:rgba(10,20,40,0.4);
    opacity:0;transition:opacity .35s ease;
  }
  .nav-mobile.open .nav-backdrop{opacity:1}

  /* Panel - slide from right */
  .nav-panel{
    position:absolute;top:0;right:0;bottom:0;
    width:300px;max-width:84vw;
    background:#FFFFFF;
    box-shadow:-8px 0 40px rgba(21,101,192,0.12);
    display:flex;flex-direction:column;
    transform:translateX(100%);
    transition:transform .4s cubic-bezier(0.22,0.61,0.36,1);
  }
  .nav-mobile.open .nav-panel{transform:translateX(0)}

  .nav-panel-head{
    display:flex;align-items:center;justify-content:space-between;
    padding:20px 24px;border-bottom:1px solid var(--c-border);
  }
  .nav-panel-head span{font-size:1.05rem;font-weight:700;color:var(--c-ink)}
  .nav-panel-close{
    display:flex;align-items:center;justify-content:center;
    width:36px;height:36px;background:none;border:none;
    color:var(--c-ink2);cursor:pointer;border-radius:8px;transition:all .2s;
  }
  .nav-panel-close:hover{background:var(--sky-100);color:var(--sky-600)}

  .nav-panel-body{
    flex:1;padding:20px 24px;display:flex;flex-direction:column;
  }
  .nav-m-link{
    font-size:1.05rem;padding:14px 16px;border-radius:10px;
    color:var(--c-ink);font-weight:500;margin-bottom:4px;transition:all .2s;
  }
  .nav-m-link:hover,.nav-m-link.active{color:var(--sky-700);background:var(--sky-100)}

  .nav-panel-foot{
    padding:20px 24px;border-top:1px solid var(--c-border);
    display:flex;flex-direction:column;gap:6px;
    font-size:.8rem;color:var(--c-ink3);
  }

  .hero-title{font-size:1.9rem}
  .hero-trust{gap:24px}
  .about-row{grid-template-columns:1fr;gap:36px}
  .about-stats{flex-wrap:wrap;gap:24px;padding:28px 24px}
  .stat-sep{width:40px;height:1px}
  .svc-grid{grid-template-columns:1fr}
  .contact-row{grid-template-columns:1fr}
  .c-row{grid-template-columns:1fr}
  .s-title{font-size:1.6rem}
  .plan-item{min-width:130px}
  .ft-grid{grid-template-columns:1fr 1fr;gap:28px}
  .ft-follow{display:none}
  .ft-bottom{flex-direction:column;gap:4px;text-align:center}

  /* Hide PC sidebar, show mobile bar */
  .sidebar{display:none}
  .mobile-bar{
    display:block;position:fixed;bottom:0;left:0;right:0;z-index:190;
    background:rgba(255,255,255,0.95);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-top:1px solid var(--c-border);box-shadow:0 -2px 12px var(--c-shadow);
  }
  .mb-inner{
    display:flex;align-items:center;justify-content:center;
    max-width:360px;margin:0 auto;height:52px;
  }
  .mb-item{
    flex:1;display:flex;align-items:center;justify-content:center;gap:8px;
    padding:10px 0;color:var(--c-ink2);font-size:.85rem;font-weight:500;
    cursor:pointer;transition:color .2s;text-decoration:none;
  }
  .mb-item:hover,.mb-item:active{color:var(--sky-600)}
  .mb-item svg{width:18px;height:18px;flex-shrink:0}
  .mb-phone{color:var(--sky-600);font-weight:600}
  .mb-line{width:1px;height:20px;background:var(--c-border);flex-shrink:0}
  body{padding-bottom:56px}
}

@media(max-width:480px){
  .hero-title{font-size:1.6rem}
  .hero-actions{flex-direction:column;align-items:center}
  .hero-actions .btn{width:100%;max-width:260px}
  .ft-grid{grid-template-columns:1fr}
  .ft-follow{display:none}
  .scene-card{padding:24px 20px}
  .nav-panel{width:100%;max-width:100vw}
  .sidebar{display:none}
  .mobile-bar{display:block}
  .mb-inner{max-width:100%}
  body{padding-bottom:56px}
}