/* ============================================================
   智蟹数字科技 企业官网原型 v2
   定位: POD店铺投资品 · 大闸蟹引擎全自动运营
   ============================================================ */
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}
:root{--crab:#C98B7A;--crab-d:#B06D5E;--crab-l:#E8C4B5;--crab-p:#F5E4DC;--cream:#FDF9F5;--wbg:#F7F2ED;--wcard:#FEFCFA;--bd:#EBE3DB;--ink:#1E2A3A;--ilk:#3A4A5C;--im:#6B7B8D;--gold:#C49A5C;--su:#7BA87F;--w:#FFF;--display:'Playfair Display','Noto Sans SC',serif;--body:'Noto Sans SC',sans-serif;--r:12px;--rl:20px;--rxl:28px;--sh:0 4px 24px rgba(30,42,58,.06);--shl:0 12px 48px rgba(30,42,58,.08);--e:cubic-bezier(.4,0,.2,1)}
body{font-family:var(--body);color:var(--ink);line-height:1.7;background:var(--cream);overflow-x:hidden;-webkit-font-smoothing:antialiased}
.container{max-width:1280px;margin:0 auto;padding:0 2.5rem}
section{padding:100px 0;position:relative;z-index:1}
.s-label{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;color:var(--crab);text-transform:uppercase;letter-spacing:.14em;margin-bottom:16px}
.s-label::before{content:'';width:24px;height:2px;background:linear-gradient(90deg,var(--crab),var(--crab-l));border-radius:1px}
.s-title{font-size:2.2rem;font-weight:800;color:var(--ink);line-height:1.2;letter-spacing:-.02em;margin-bottom:16px}
.s-desc{font-size:1.02rem;color:var(--im);max-width:600px;line-height:1.8}
.s-head{text-align:center;margin-bottom:72px}.s-head .s-desc{margin:0 auto}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:var(--r);font-weight:600;font-size:.92rem;text-decoration:none;border:none;cursor:pointer;font-family:var(--body);transition:all .3s var(--e)}
.btn-p{background:linear-gradient(135deg,var(--crab),var(--crab-d));color:var(--w);box-shadow:0 4px 20px rgba(201,139,122,.3)}
.btn-p:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(201,139,122,.4)}
.btn-o{background:transparent;color:var(--crab);border:2px solid var(--crab-l)}.btn-o:hover{background:var(--crab-p);border-color:var(--crab)}
.btn-d{background:var(--ink);color:var(--w)}.btn-d:hover{background:var(--crab)}

.nav{position:fixed;top:0;left:0;right:0;z-index:1000;transition:all .4s var(--e)}
.nav.scrolled{background:rgba(253,249,245,.92);backdrop-filter:blur(24px) saturate(1.2);-webkit-backdrop-filter:blur(24px) saturate(1.2);border-bottom:1px solid var(--bd)}
.nav-in{max-width:1280px;margin:0 auto;padding:0 2.5rem;height:76px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none;transition:opacity .25s var(--e)}.nav-logo:hover{opacity:.85}
.nav-logo-img{height:36px;width:auto}
.nav-logo-text{font-size:1.1rem;font-weight:700;letter-spacing:.02em}.nlt-zx{color:var(--crab)}.nlt-kj{color:var(--ink)}
.nav-ls{display:flex;gap:.25rem;align-items:center}.nav-ls a,.nav-ls .nav-drop-trigger{color:var(--im);text-decoration:none;font-size:.88rem;font-weight:500;padding:8px 16px;border-radius:8px;transition:all .25s var(--e);cursor:pointer;display:flex;align-items:center;gap:4px}.nav-ls a:hover,.nav-ls .nav-drop-trigger:hover{color:var(--crab);background:var(--crab-p)}
/* 下拉菜单 */
.nav-drop{position:relative}.nav-drop-arrow{font-size:.65rem;transition:transform .25s var(--e);opacity:.5}.nav-drop:hover .nav-drop-arrow{transform:rotate(180deg);opacity:1}
.nav-drop-menu{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%);background:var(--w);border-radius:var(--rxl);padding:6px;min-width:220px;box-shadow:0 16px 48px rgba(30,42,58,.12);border:1px solid var(--bd);opacity:0;visibility:hidden;transition:all .25s var(--e);z-index:100}
.nav-drop:hover .nav-drop-menu{opacity:1;visibility:visible}
.ndm-item{display:flex;align-items:flex-start;gap:12px;padding:12px 14px!important;border-radius:10px!important;text-decoration:none!important;transition:all .2s var(--e)!important;white-space:nowrap}.ndm-item:hover{background:var(--crab-p)!important;color:var(--ink)!important}
.ndm-icon{font-size:1.15rem;line-height:1;flex-shrink:0;width:24px;text-align:center}.ni-crab{color:var(--crab)}.ni-ops{color:#635BFF}.ni-cust{color:#3B82F6}.ni-agent{color:#D4A853}.ndm-text{display:flex;flex-direction:column;gap:1px}.ndm-text strong{font-size:.85rem;font-weight:600;color:var(--ink);line-height:1.3}.ndm-text span{font-size:.75rem;color:var(--im);line-height:1.3}
.nav-a{background:var(--ink)!important;color:#fff!important;padding:10px 22px!important;border-radius:var(--r)!important;font-weight:600!important;font-size:.85rem!important;margin-left:8px;box-shadow:0 2px 8px rgba(30,42,58,.15);border:none;cursor:pointer;font-family:var(--body);transition:all .25s var(--e)!important}.nav-a:hover{background:var(--crab)!important;transform:translateY(-1px)!important}
.mnu-btn{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none}.mnu-btn span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:all .3s}
.mnu-btn.ac span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.mnu-btn.ac span:nth-child(2){opacity:0}.mnu-btn.ac span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.mnu-p{display:none;position:fixed;inset:0;background:rgba(253,249,245,.98);backdrop-filter:blur(20px);z-index:999;padding:100px 32px 32px;flex-direction:column;gap:4px}.mnu-p.ac{display:flex}.mnu-p a{font-size:1.15rem;font-weight:600;color:var(--ink);text-decoration:none;padding:16px 0;border-bottom:1px solid var(--bd)}.mnu-p .mnu-label{font-size:.85rem;font-weight:600;color:var(--crab);padding:16px 0 4px;border-bottom:none;letter-spacing:.06em;text-transform:uppercase}.mnu-close{position:absolute;top:24px;right:24px;width:44px;height:44px;background:var(--w);border-radius:12px;display:flex;align-items:center;justify-content:center;cursor:pointer;border:1px solid var(--bd);font-size:1.4rem;color:var(--im)}

.hero{min-height:100vh;display:flex;align-items:center;padding:140px 0 100px}.hero .container{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:10px;padding:6px 20px;border-radius:50px;background:var(--w);border:1px solid var(--bd);font-size:.82rem;font-weight:600;color:var(--crab);margin-bottom:28px;animation:fu .6s var(--e) both}
.hero-badge .dot{width:7px;height:7px;background:var(--su);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(123,168,127,.4)}50%{opacity:.6;box-shadow:0 0 0 8px rgba(123,168,127,0)}}
.hero h1{font-size:3.2rem;font-weight:900;color:var(--ink);line-height:1.15;letter-spacing:-.03em;margin-bottom:24px;animation:fu .6s var(--e) .1s both}
.hero h1 .brand{background:linear-gradient(135deg,var(--crab),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero .hero-desc{font-size:1.02rem;color:var(--im);line-height:1.85;margin-bottom:32px;max-width:500px;animation:fu .6s var(--e) .2s both}
.hero .hero-desc strong{color:var(--ink);font-weight:700}
.hero-acts{display:flex;gap:14px;flex-wrap:wrap;animation:fu .6s var(--e) .3s both}
.hero-trust{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:28px;font-size:.8rem;color:var(--su);animation:fu .6s var(--e) .4s both;align-items:center}
.risk-disclaimer{font-size:.72rem;color:var(--im);opacity:.65}
.disclaimer-tag{display:inline-block;font-size:.72rem;color:var(--im);background:var(--wbg);padding:2px 8px;border-radius:4px;vertical-align:middle;margin-left:4px}
@keyframes fu{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.hero-vis{position:relative;display:flex;align-items:center;justify-content:center;min-height:380px}
.hv-crab{width:280px;height:280px;background:radial-gradient(ellipse at 50% 40%,var(--crab-p) 0%,transparent 70%);border-radius:50%;animation:hf 8s ease-in-out infinite}
@keyframes hf{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}
.hv-inner{position:absolute;inset:36px;background:linear-gradient(145deg,var(--w),var(--wbg));border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 30px 80px rgba(201,139,122,.15),inset 0 1px 0 rgba(255,255,255,.8);border:1px solid rgba(201,139,122,.1);text-align:center;padding:12px}
.hv-core{display:flex;flex-direction:column;align-items:center;gap:4px}
.hv-core-label{font-size:.75rem;font-weight:700;color:var(--crab);letter-spacing:.06em;text-transform:uppercase}
.hv-core-value{font-size:2.6rem;font-weight:900;color:var(--ink);line-height:1;background:linear-gradient(135deg,var(--crab),#b8735a);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hv-core-desc{font-size:.72rem;color:var(--sub);font-weight:500}
.hv-stat{position:absolute;background:var(--w);padding:16px 22px;border-radius:var(--rl);box-shadow:0 12px 40px rgba(30,42,58,.08);border:1px solid var(--bd);animation:sf 6s ease-in-out infinite}
@keyframes sf{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.hv-stat.s1{top:5%;right:-10px;animation-delay:0s}.hv-stat.s2{bottom:8%;left:-20px;animation-delay:1.5s}.hv-stat.s3{top:5%;left:-10px;animation-delay:3s}.hv-stat.s4{bottom:8%;right:-10px;animation-delay:4.5s}
.st-v{font-size:1.5rem;font-weight:800;color:var(--crab);line-height:1.2}.st-l{font-size:.76rem;color:var(--im)}

.opportunity{background:var(--w)}
.opp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:48px}
.opp-card{padding:32px 24px;border-radius:var(--rl);background:var(--wcard);border:1px solid var(--bd);text-align:center;transition:all .35s var(--e)}
.opp-card:hover{transform:translateY(-4px);box-shadow:var(--shl);border-color:var(--crab-l)}
.opp-num{font-size:2rem;font-weight:900;color:var(--crab);margin-bottom:12px;font-family:var(--display);letter-spacing:-.02em}
.opp-text{font-size:.88rem;color:var(--ilk);line-height:1.7}
.opp-src{font-size:.72rem;color:var(--im);margin-top:8px}
.opp-insight{max-width:800px;margin:0 auto;text-align:center;padding:36px 40px;background:linear-gradient(160deg,rgba(201,139,122,.04),var(--wcard));border-radius:var(--rxl);border:1px solid var(--bd)}
.opp-insight h3{font-size:1.1rem;font-weight:700;color:var(--ink);margin-bottom:14px}
.opp-insight p{font-size:.93rem;color:var(--ilk);line-height:1.9}
.opp-insight em{color:var(--crab);font-style:normal;font-weight:600}.opp-insight strong{color:var(--ink);font-weight:700}

.engine{background:var(--wbg)}
.eng-layout{display:grid;grid-template-columns:1fr 1.3fr;gap:56px;align-items:stretch;max-width:1040px;margin:0 auto}
.eng-hero-card{background:linear-gradient(160deg,rgba(201,139,122,.06),var(--w) 60%);border-radius:var(--rxl);padding:44px 36px;text-align:center;border:1px solid var(--crab-l);display:flex;flex-direction:column;justify-content:center;height:100%;box-sizing:border-box}
.ehc-icon{width:56px;height:56px;margin:0 auto 16px}.ehc-icon img{width:100%;height:100%;object-fit:contain}.eng-hero-card h3{font-size:1.4rem;font-weight:800;color:var(--ink);margin-bottom:8px}
.ehc-tag{display:inline-block;padding:4px 16px;background:var(--crab-p);color:var(--crab-d);border-radius:50px;font-size:.78rem;font-weight:600;margin-bottom:20px}
.eng-hero-card p{font-size:.93rem;color:var(--im);line-height:1.8}.eng-hero-card p strong{color:var(--ink)}
.ehc-btn{display:inline-flex;align-items:center;gap:6px;margin-top:20px;padding:10px 24px;background:var(--crab);color:#fff;border-radius:8px;text-decoration:none;font-size:.88rem;font-weight:600;transition:all .25s var(--e);align-self:center}.ehc-btn:hover{background:var(--crab-d);transform:translateY(-1px);box-shadow:0 4px 12px rgba(201,139,122,.35)}
.eng-flow{display:flex;flex-direction:column;gap:28px}
.ef-step{display:flex;gap:20px;padding:24px;border-radius:var(--rl);background:var(--w);border:1px solid var(--bd);transition:all .3s var(--e)}
.ef-step:hover{border-color:var(--crab-l);box-shadow:var(--sh);transform:translateX(6px)}
.ef-num{font-size:1.6rem;font-weight:900;color:var(--crab-p);font-family:var(--display);min-width:44px;line-height:1}
.ef-body h4{font-size:1rem;font-weight:700;color:var(--ink);margin-bottom:6px}
.ef-body p{font-size:.85rem;color:var(--im);line-height:1.7}

.model{background:var(--w)}
.mod-wrap{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-bottom:48px;max-width:1100px;margin-left:auto;margin-right:auto}
.mod-card{padding:36px;border-radius:var(--rxl);border:1px solid var(--bd);background:var(--wcard)}
.mod-card h3{font-size:1.1rem;font-weight:700;color:var(--ink);margin-bottom:24px;text-align:center}
.cost-net-badge{background:linear-gradient(135deg,var(--crab-p),#fef5f2);border:1px solid var(--crab-l);border-radius:var(--rl);padding:12px 18px;font-size:.92rem;color:var(--crab-d);font-weight:600;margin-bottom:4px;text-align:center}.cost-net-badge span{color:var(--im);font-weight:400;margin-left:6px}
.mod-rows{display:flex;flex-direction:column}
.mr{display:flex;align-items:center;justify-content:space-between;padding:11px 0;border-bottom:1px solid var(--bd);gap:12px}
.mr span{font-size:.86rem;color:var(--im);flex:1}.mr span:first-child{color:var(--ilk);font-weight:500;min-width:110px}.mr span:nth-child(2){text-align:right;min-width:100px;font-size:.78rem}
.mr strong{font-size:.9rem;color:var(--ink);font-weight:700;min-width:68px;text-align:right}
.mr.total strong{font-size:1.2rem;color:var(--ink)}
.mr.green strong{color:var(--su)}.mr.red strong{color:var(--crab-d)}
.mr.dim{font-size:.75rem;color:var(--im);border:none;padding:4px 0 10px;justify-content:flex-end}.mr.dim span{font-size:.75rem;color:var(--im)}
.mod-note{font-size:.82rem;color:var(--im);text-align:center;margin-top:18px;line-height:1.7}
.profit-highlight{padding:28px;background:linear-gradient(135deg,rgba(123,168,127,.06),rgba(123,168,127,.02));border-radius:var(--rl);text-align:center;margin-bottom:24px}
.ph-main span{font-size:2.4rem;font-weight:900;color:var(--su);display:block;margin-bottom:8px}
.ph-main div{font-size:.85rem;color:var(--ilk)}
.mod-kpi{display:flex;gap:20px;margin-top:24px;padding-top:24px;border-top:1px solid var(--bd)}
.mk-item{flex:1;text-align:center;padding:16px 12px;background:var(--cream);border-radius:var(--r)}
.mk-val{font-size:1.4rem;font-weight:800;color:var(--crab);margin-bottom:4px}.mk-label{font-size:.75rem;color:var(--im)}
.mod-compare{margin-bottom:48px;max-width:750px;margin-left:auto;margin-right:auto}
.mod-compare h3{text-align:center;font-size:1.05rem;font-weight:700;color:var(--ink);margin-bottom:24px}
.mc-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.mc-col{border-radius:var(--rl);overflow:hidden;border:1px solid var(--bd)}
.mc-header{padding:16px;background:linear-gradient(135deg,var(--crab-p),rgba(201,139,122,.05));text-align:center;font-weight:700;font-size:.9rem;color:var(--crab-d)}
.mc-body{padding:18px 24px 22px;background:var(--wcard)}
.mcb-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--bd);font-size:.88rem;color:var(--im)}.mcb-row:last-child{border:none}
.mcb-row span{min-width:70px;color:var(--ilk);font-weight:500}
.mcb-row strong{font-weight:700;color:var(--ink);text-align:right}.mcb-row strong.green{color:var(--su)}
.mod-cta{text-align:center}.mod-cta p{font-size:.8rem;color:var(--im);margin-top:14px;max-width:580px;margin-left:auto;margin-right:auto;line-height:1.7}

.fit{background:var(--wbg)}
.fit-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;max-width:1100px;margin:0 auto}
.fit-card{padding:32px 24px;border-radius:var(--rl);background:var(--w);border:1px solid var(--bd);text-align:center;transition:all .35s var(--e)}
.fit-card:hover{transform:translateY(-4px);box-shadow:var(--shl);border-color:var(--crab-l)}
.fit-card.emphasis{background:linear-gradient(160deg,rgba(201,139,122,.06),var(--w) 60%);border-color:var(--crab-l)}
.fc-icon{font-size:2rem;margin-bottom:16px}.fit-card h3{font-size:.95rem;font-weight:700;color:var(--ink);margin-bottom:10px}
.fit-card p{font-size:.82rem;color:var(--im);line-height:1.7}.fit-card p strong{color:var(--ink);font-weight:700}

.cases{background:var(--wbg)}

.why-us{background:var(--w);position:relative;overflow:hidden}
.wu-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:960px;margin:0 auto}
.wu-item{padding:36px 28px;border-radius:var(--rl);background:var(--wcard);border:1px solid var(--bd);text-align:center;transition:all .35s var(--e)}
.wu-item:hover{transform:translateY(-4px);box-shadow:var(--shl);border-color:var(--crab-l)}
.wu-icon{font-size:2rem;margin-bottom:16px}.wu-item h4{font-size:1rem;font-weight:700;color:var(--ink);margin-bottom:10px}
.wu-item p{font-size:.85rem;color:var(--im);line-height:1.7}

.about{background:var(--wbg);position:relative;overflow:hidden}.about-content{max-width:880px;margin:0 auto}
.about-story p{font-size:1.05rem;color:var(--ilk);line-height:2.1;margin-bottom:20px;text-align:justify}
.about-story p em{color:var(--crab);font-style:normal;font-weight:500}.about-story p strong{color:var(--ink);font-weight:700}
.about-milestones{margin-top:56px;position:relative;padding-left:80px}
.about-milestones::before{content:'';position:absolute;left:28px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--crab),var(--crab-l),var(--crab-p))}
.ms-item{position:relative;padding:14px 0;padding-left:0;display:flex;align-items:baseline;gap:16px}
.ms-item::before{content:'';position:absolute;left:-56px;top:22px;width:10px;height:10px;background:var(--crab);border-radius:50%;border:3px solid var(--wbg);box-shadow:0 0 0 3px var(--crab-p)}
.ms-year{font-size:.95rem;font-weight:800;color:var(--crab);min-width:52px;font-family:var(--display);letter-spacing:.02em}
.ms-txt{font-size:.95rem;color:var(--ilk);line-height:1.7}

.cta-s{background:linear-gradient(160deg,var(--ink),#2D3F50);padding:100px 0;text-align:center;position:relative;overflow:hidden}
.cta-s::before{content:'';position:absolute;top:-30%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(201,139,122,.08),transparent);border-radius:50%}
.cta-s h2{font-size:2.4rem;font-weight:800;color:var(--w);margin-bottom:16px;position:relative}
.cta-s p{font-size:1.05rem;color:rgba(255,255,255,.6);margin-bottom:36px;max-width:480px;margin-left:auto;margin-right:auto;line-height:1.8;position:relative}

footer{background:var(--ink);color:#fff;padding:40px 0 24px}
.ft-simple{display:flex;align-items:center;justify-content:space-between;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.08);flex-wrap:wrap;gap:16px}
.ft-sim-l{display:flex;align-items:center;gap:10px}.ft-sim-l img{height:28px;width:auto;filter:brightness(0) invert(1)}.ft-sim-l span{font-size:.95rem;font-weight:700;color:rgba(255,255,255,.85);letter-spacing:.02em}
.ft-sim-m{color:rgba(255,255,255,.35);font-size:.82rem;font-weight:400}
.ft-sim-r{display:flex;gap:6px;flex-wrap:wrap}.ft-sim-r a{color:rgba(255,255,255,.45);text-decoration:none;font-size:.82rem;padding:6px 14px;border-radius:20px;border:1px solid rgba(255,255,255,.1);transition:all .25s var(--e)}.ft-sim-r a:hover{color:#fff;border-color:var(--crab);background:rgba(201,139,122,.15)}
.ft-sim-bot{display:flex;justify-content:center;align-items:center;padding-top:20px;color:rgba(255,255,255,.28);font-size:.76rem;flex-wrap:wrap;gap:12px}.ft-sim-bot a{color:rgba(255,255,255,.3);text-decoration:none;transition:color .2s}.ft-sim-bot a:hover{color:var(--crab-l)}

.modal{display:none;position:fixed;inset:0;z-index:2000;background:rgba(30,42,58,.5);backdrop-filter:blur(8px);align-items:center;justify-content:center;padding:1rem}
.modal.ac{display:flex}.modal-bx{background:var(--w);border-radius:var(--rxl);padding:40px 32px;width:100%;max-width:480px;position:relative;box-shadow:0 24px 64px rgba(0,0,0,.15);animation:mi .35s var(--e)}
@keyframes mi{from{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}
.modal-x{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;background:var(--cream);border:none;cursor:pointer;font-size:1.2rem;color:var(--im);display:flex;align-items:center;justify-content:center;transition:all .2s}.modal-x:hover{background:var(--wbg);color:var(--ink)}
.privacy-consent{margin-top:14px;font-size:.78rem;color:var(--im);display:flex;align-items:center;gap:6px;line-height:1.5}.privacy-consent input[type=checkbox]{width:16px;height:16px;accent-color:var(--crab);flex-shrink:0}.privacy-consent a{color:var(--crab);text-decoration:none;font-weight:500}.privacy-consent a:hover{text-decoration:underline}
.modal-bx h3{font-size:1.3rem;font-weight:700;color:var(--ink);margin-bottom:4px}.fhint{font-size:.85rem;color:var(--im);margin-bottom:24px}
.fg{margin-bottom:16px}.fg label{display:block;font-size:.82rem;font-weight:600;color:var(--ink);margin-bottom:6px}
.fg input,.fg textarea,.fg select{width:100%;padding:10px 14px;border:2px solid var(--bd);border-radius:var(--r);font-size:.88rem;font-family:var(--body);transition:all .2s;background:var(--cream)}
.fg input:focus,.fg textarea:focus,.fg select:focus{outline:none;border-color:var(--crab);box-shadow:0 0 0 4px rgba(201,139,122,.1);background:var(--w)}
.fg textarea{resize:vertical;min-height:80px}.f-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.btn-sub{width:100%;justify-content:center;padding:13px 0;font-size:.95rem;margin-top:8px}

@media(max-width:1200px){.fit-grid{grid-template-columns:repeat(3,1fr)}.fit-card.emphasis{grid-column:span 3}}
@media(max-width:1024px){.hero .container{grid-template-columns:1fr;text-align:center;gap:40px}.hero .hero-desc{margin:0 auto 32px}.hero-acts,.hero-trust{justify-content:center}.hero h1{font-size:2.4rem}.hero-vis{display:none}.opp-grid{grid-template-columns:1fr 1fr}.eng-layout{grid-template-columns:1fr;gap:36px}.mod-wrap{grid-template-columns:1fr;gap:28px}.fit-grid{grid-template-columns:repeat(3,1fr)}.fit-card.emphasis{grid-column:span 3}.wu-grid{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:768px){.nav-ls{display:none}.mnu-btn{display:flex}section{padding:60px 0}.container{padding:0 1.25rem}.hero{padding:100px 0 60px}.hero h1{font-size:1.9rem}.s-title{font-size:1.6rem}.opp-grid{grid-template-columns:1fr}.eng-layout{grid-template-columns:1fr}.mod-wrap{grid-template-columns:1fr}.mod-card{padding:28px 20px}.mod-kpi{gap:12px}.mk-item{padding:12px 8px}.mk-val{font-size:1.2rem}.mc-grid{grid-template-columns:1fr}.fit-grid{grid-template-columns:1fr}.fit-card.emphasis{grid-column:span 1}.wu-grid{grid-template-columns:1fr}.ft-simple{flex-direction:column;text-align:center}.ft-sim-r{justify-content:center}.ft-sim-bot{flex-direction:column;text-align:center}.about-milestones{padding-left:52px}.about-milestones::before{left:16px}.ms-item::before{left:-40px;width:8px;height:8px}.ms-item{gap:10px}.ms-year{font-size:.85rem;min-width:44px}.ms-txt{font-size:.85rem}.about-story p{font-size:.93rem;text-align:left}.modal-bx{margin:1rem;padding:28px 20px}}

/* ============ 案例浮动卡片 ============ */
.cases{background:var(--wbg);position:relative;overflow:hidden}
.cases::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 60% 50% at 30% 20%,rgba(201,139,122,.04),transparent 70%),radial-gradient(ellipse 50% 60% at 70% 60%,rgba(123,168,127,.03),transparent 70%),radial-gradient(ellipse 40% 40% at 50% 50%,rgba(91,127,191,.02),transparent 70%);pointer-events:none;z-index:0}
.cases.revealed .case-float-grid{animation:caseGridIn .8s var(--e) .3s both}
@keyframes caseGridIn{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.case-float-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:44px 0 0;max-width:960px;margin-left:auto;margin-right:auto}

/* 浮动卡片 */
.case-float-card{position:relative;background:rgba(255,255,255,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:var(--rxl);padding:28px 24px 24px;border:1px solid rgba(201,139,122,.12);cursor:pointer;transition:all .4s var(--e);animation:caseFloat 5s ease-in-out var(--delay) infinite;box-shadow:0 2px 12px rgba(30,42,58,.04)}
.case-float-card:hover{transform:translateY(-6px) scale(1.03);border-color:rgba(201,139,122,.35);box-shadow:0 12px 40px rgba(201,139,122,.12),0 0 0 1px rgba(201,139,122,.15);z-index:5;animation-play-state:paused;background:rgba(255,255,255,.92)}
.case-float-card:active{transform:scale(.98)}
@keyframes caseFloat{0%,100%{transform:translateY(0)}25%{transform:translateY(-5px)}75%{transform:translateY(3px)}}
.case-float-card:nth-child(odd) .cfc-av{animation:avPulse 3s ease-in-out var(--delay) infinite}
.case-float-card:nth-child(even) .cfc-av{animation:avPulse 3.5s ease-in-out calc(var(--delay) + .5s) infinite}
@keyframes avPulse{0%,100%{box-shadow:0 0 0 0 rgba(201,139,122,.2)}50%{box-shadow:0 0 0 8px rgba(201,139,122,.05)}}
.case-float-card:hover .cfc-av{animation-play-state:paused}

.cfc-av{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:.95rem;margin-bottom:14px;transition:all .3s var(--e)}
.cfc-name{font-weight:700;color:var(--ink);font-size:.95rem;margin-bottom:2px}
.cfc-role{font-size:.76rem;color:var(--im);margin-bottom:12px}
.cfc-preview{font-size:.85rem;color:var(--ilk);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;opacity:.7}

/* 展开叠加层 */
.case-detail-overlay{position:fixed;inset:0;z-index:1000;background:rgba(15,20,30,.55);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;visibility:hidden;transition:all .35s var(--e)}
.case-detail-overlay.active{opacity:1;visibility:visible}
.case-detail-card{position:relative;background:var(--w);border-radius:var(--rxl);padding:48px 44px 40px;max-width:560px;width:100%;box-shadow:0 24px 80px rgba(30,42,58,.18);border:1px solid rgba(201,139,122,.1);animation:cdPopIn .45s var(--e)}
@keyframes cdPopIn{from{opacity:0;transform:scale(.92) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}

.cd-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:10px;border:none;background:rgba(30,42,58,.05);cursor:pointer;font-size:1.3rem;color:var(--im);display:flex;align-items:center;justify-content:center;transition:all .25s var(--e);line-height:1;padding:0}
.cd-close:hover{background:rgba(201,139,122,.15);color:var(--crab)}

.cd-header{display:flex;align-items:center;gap:14px;margin-bottom:24px}
.cd-av{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:1.1rem;flex-shrink:0}
.cd-name{font-weight:700;color:var(--ink);font-size:1.05rem}
.cd-role{font-size:.8rem;color:var(--im);margin-top:2px}
.cd-quote{font-size:1rem;color:var(--ilk);line-height:2;font-style:italic;border-left:3px solid var(--crab-l);padding-left:20px;margin:0 0 28px}
.cd-stats{display:flex;gap:32px;padding-top:24px;border-top:1px solid var(--bd)}
.cd-stat{text-align:center;flex:1}.cds-v{font-size:1.5rem;font-weight:800;color:var(--crab);line-height:1.2}.cds-l{font-size:.75rem;color:var(--im);margin-top:4px}

.case-more-hint{text-align:center;margin-top:28px;font-size:.85rem;color:var(--im);letter-spacing:.02em}

@media(max-width:1024px){
.case-float-grid{grid-template-columns:repeat(2,1fr);gap:16px}
}
@media(max-width:640px){
.case-float-grid{grid-template-columns:1fr;gap:14px;margin:32px 0 0}
.case-float-card{animation-duration:4s;padding:22px 18px}
.case-detail-card{padding:36px 22px 28px}
.cd-stats{gap:20px}
}

/* ============ 滚动渐入动画 ============ */
.reveal-fade{opacity:0;transform:translateY(40px);transition:opacity .8s var(--e),transform .8s var(--e)}
.reveal-fade.revealed{opacity:1;transform:translateY(0)}
/* 子元素错落入场 */
.reveal-fade.revealed .wu-item:nth-child(1){transition-delay:0s}
.reveal-fade.revealed .wu-item:nth-child(2){transition-delay:.08s}
.reveal-fade.revealed .wu-item:nth-child(3){transition-delay:.16s}
.reveal-fade.revealed .wu-item:nth-child(4){transition-delay:.24s}
.reveal-fade.revealed .wu-item:nth-child(5){transition-delay:.32s}
.reveal-fade.revealed .wu-item:nth-child(6){transition-delay:.4s}
.reveal-fade.revealed .ef-step:nth-child(1){transition-delay:0s}
.reveal-fade.revealed .ef-step:nth-child(2){transition-delay:.1s}
.reveal-fade.revealed .ef-step:nth-child(3){transition-delay:.2s}
.reveal-fade.revealed .ef-step:nth-child(4){transition-delay:.3s}
.reveal-fade.revealed .opp-card:nth-child(1){transition-delay:0s}
.reveal-fade.revealed .opp-card:nth-child(2){transition-delay:.08s}
.reveal-fade.revealed .opp-card:nth-child(3){transition-delay:.16s}
.reveal-fade.revealed .opp-card:nth-child(4){transition-delay:.24s}
.reveal-fade.revealed .fit-card:nth-child(1){transition-delay:0s}
.reveal-fade.revealed .fit-card:nth-child(2){transition-delay:.08s}
.reveal-fade.revealed .fit-card:nth-child(3){transition-delay:.16s}
.reveal-fade.revealed .fit-card:nth-child(4){transition-delay:.24s}
.reveal-fade.revealed .fit-card:nth-child(5){transition-delay:.32s}
.reveal-fade.revealed .ms-item:nth-child(1){transition-delay:0s}
.reveal-fade.revealed .ms-item:nth-child(2){transition-delay:.12s}
.reveal-fade.revealed .ms-item:nth-child(3){transition-delay:.24s}
.reveal-fade.revealed .ms-item:nth-child(4){transition-delay:.36s}
.reveal-fade.revealed .ms-item:nth-child(5){transition-delay:.48s}
/* 子元素初始状态 */
.wu-item,.ef-step,.opp-card,.fit-card,.ms-item{transition:opacity .5s var(--e),transform .5s var(--e)}

/* ============ 增强卡片悬浮 ============ */
.opp-card,.wu-item,.fit-card{transition:all .4s cubic-bezier(.25,.8,.25,1)}
.opp-card:hover,.wu-item:hover,.fit-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(30,42,58,.1)}
.opp-card:hover .opp-num{transform:scale(1.05)}

/* ============ 背景装饰 ============ */
.why-us::before{content:'';position:absolute;top:-40px;right:-80px;width:300px;height:300px;background:radial-gradient(circle,rgba(201,139,122,.04),transparent 70%);border-radius:50%;pointer-events:none;z-index:0}
.about::after{content:'';position:absolute;bottom:0;left:-60px;width:240px;height:240px;background:radial-gradient(circle,rgba(201,139,122,.03),transparent 70%);border-radius:50%;pointer-events:none;z-index:0}

/* ============ 页面滚动进度条 ============ */
.progress-bar{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--crab),var(--gold));z-index:1001;transition:width .1s linear}