/* =====================================================================
   单独版本：原本精算 UI + 鼠尾/当前动画效果
   视觉恢复上一版用户更喜欢的「精算/Bloomberg」：
   奶油纸 #F2EFE7 + 编辑红 #C7322E + 橄榄 #5E6347 + 发丝线数据网格。
   动画保留：阅读进度条、数字滚动、卡片翻动入场、滚动揭示。
   ===================================================================== */
:root{--ground:#F2EFE7;--surface:#fff;--surface-2:#ECE7D8;--ink:#1A1A1A;--text-2:#5E6347;--text-3:#8A8B72;--accent:#C7322E;--accent-2:#5E6347;--hairline:#C8C2B0;--tag-bg:#F7F4EC;--display:'Playfair Display','Noto Serif SC',Georgia,serif;--sans:'Inter','Noto Sans SC',sans-serif;--mono:'JetBrains Mono','Roboto Mono',ui-monospace,monospace;--radius:0px;--ease:cubic-bezier(.22,1,.36,1);--ease-out:cubic-bezier(.16,1,.3,1);--maxw:1120px}
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--sans);background:var(--ground);color:var(--ink);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;position:relative}[v-cloak]{display:none!important}::selection{background:var(--accent);color:#fff}
.read-progress{position:fixed;top:0;left:0;height:3px;width:100%;z-index:1100;transform-origin:left center;transform:scaleX(0);transition:transform .1s linear}.read-progress::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--accent),var(--accent-2));box-shadow:0 0 8px rgba(199,50,46,.35)}
.version-badge{position:absolute;top:18px;left:24px;z-index:1000;font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--accent);background:rgba(255,255,255,.72);border:1px solid var(--hairline);padding:6px 10px;pointer-events:none}.top-bar{position:absolute;top:18px;right:24px;z-index:1000;font-family:var(--mono);font-size:13px;color:var(--text-2);letter-spacing:1.5px;font-variant-numeric:tabular-nums;background:rgba(242,239,231,.82);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);padding:6px 13px;border:1px solid var(--hairline);user-select:none;pointer-events:none}.top-time:before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:8px;vertical-align:middle;animation:livePulse 2s infinite}@keyframes livePulse{0%,100%{opacity:1}50%{opacity:.35}}
#app{width:100%;max-width:100%;margin:0 auto;padding:14px 0 0;padding-bottom:calc(96px + env(safe-area-inset-bottom))}.hero{max-width:var(--maxw);margin:0 auto;padding:38px 32px 58px;text-align:center}.hero-kicker{font-family:var(--sans);font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);margin-bottom:22px;display:inline-flex;align-items:center;gap:10px;padding:8px 13px;border:1px solid var(--hairline);background:rgba(236,231,216,.72)}.hero-kicker:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);animation:glowPulse 2s infinite}@keyframes glowPulse{0%{box-shadow:0 0 0 0 rgba(199,50,46,.45)}70%{box-shadow:0 0 0 8px transparent}100%{box-shadow:0 0 0 0 transparent}}.hero-title{font-family:var(--display);font-size:clamp(2.55rem,6.8vw,5.4rem);font-weight:700;line-height:1.08;letter-spacing:-.032em;color:var(--ink);margin-bottom:26px;text-wrap:balance}.hero-title .text-ai{color:var(--accent);font-weight:700;font-style:italic;text-shadow:0 10px 28px rgba(199,50,46,.14)}.hero-title .text-sub{display:block;font-family:var(--display);font-size:.34em;font-weight:600;font-style:italic;line-height:1.35;letter-spacing:-.005em;color:var(--ink);max-width:860px;margin:18px auto 0}.hero-title .text-dot{color:var(--hairline);font-weight:300;padding:0 8px}.hero-sub{font-family:var(--sans);font-size:15px;font-weight:500;color:var(--text-2);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));justify-content:center;justify-items:center;align-items:center;gap:8px 22px;letter-spacing:.02em;max-width:760px;margin:0 auto}.hero-sub .dot{display:none}.hero-sub span:nth-child(1){grid-column:1/-1}.hero-sub span:nth-child(3){grid-column:1;transform:translateX(14px)}.hero-sub span:nth-child(5){grid-column:2;transform:translateX(14px)}.hero-sub span:not(.dot){padding:5px 0;border-bottom:1px solid rgba(94,99,71,.24)}.hero-sub .dot{color:var(--accent);font-weight:700}
.row-section{width:100%;border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline);padding:22px 0;overflow:hidden;background:var(--surface-2)}.row-section+.row-section{border-top:none}.marquee-wrap{width:100%;overflow:hidden;position:relative;user-select:none;cursor:grab;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}.marquee-wrap:active{cursor:grabbing}.marquee{display:flex;white-space:nowrap;width:max-content;will-change:transform}.marquee-item{display:inline-flex;align-items:center;flex:0 0 auto;padding:0 40px;font-family:var(--display);font-size:22px;font-weight:500;color:var(--ink);border-right:1px solid var(--hairline);height:56px;line-height:56px;transition:color .25s var(--ease)}.marquee-item:hover{color:var(--accent)}.major-item{display:inline-flex;align-items:center;flex:0 0 auto;padding:7px 16px;background:var(--tag-bg);border:1px solid var(--hairline);border-radius:999px;font-family:var(--sans);font-size:13px;font-weight:500;color:var(--ink);margin:0 6px;white-space:nowrap;cursor:pointer;height:34px;transition:all .25s var(--ease)}.major-item:hover{border-color:var(--accent);color:var(--accent)}.tag-item{display:inline-flex;align-items:center;flex:0 0 auto;font-family:var(--display);font-style:italic;font-size:18px;color:var(--text-2);margin:0 16px;white-space:nowrap;cursor:pointer;transition:color .25s var(--ease);height:34px;line-height:34px}.tag-item:hover{color:var(--accent)}
.stat-row{max-width:var(--maxw);margin:0 auto;padding:0 32px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--hairline);border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline)}.stat-item{background:var(--surface);padding:16px 14px;text-align:center}.stat-num{font-family:var(--mono);font-weight:600;font-size:clamp(1.28rem,2.35vw,1.78rem);color:var(--accent);letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1;transition:transform .18s var(--ease),text-shadow .18s var(--ease)}.stat-num.is-counting{transform:translateY(-1px);text-shadow:0 8px 22px rgba(199,50,46,.18)}.stat-num .unit{font-size:.48em;color:var(--text-2);font-weight:500;margin-left:2px}.stat-label{font-family:var(--mono);font-size:10px;color:var(--text-2);margin-top:7px;letter-spacing:.08em;text-transform:uppercase}.scroll-indicator{display:none;text-align:center;color:var(--text-3);margin:30px 0 14px;animation:bob 2.2s ease-in-out infinite}.scroll-indicator-text{font-family:var(--sans);font-size:11px;letter-spacing:.16em;margin-bottom:5px}.scroll-indicator-arrows svg{width:16px;height:16px}@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}
.parents-letter-section{padding:34px 24px 72px;display:flex;flex-direction:column;align-items:center;justify-content:center}.parents-letter-card{width:100%;max-width:680px;background:var(--surface);border:1px solid var(--hairline);padding:60px 60px 56px;position:relative;box-shadow:0 2px 10px rgba(26,26,26,.04)}.parent-scroll-cue{display:flex;align-items:center;justify-content:center;gap:8px;margin:0 auto 22px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-2);opacity:.82}.hero-scroll-cue{margin:22px auto 0}.parent-scroll-cue-arrow{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border:1px solid var(--hairline);border-radius:999px;color:var(--accent);animation:parentCueDown 1.6s ease-in-out infinite}@keyframes parentCueDown{0%,100%{transform:translateY(0);opacity:.72}50%{transform:translateY(7px);opacity:1}}.parents-letter-card h3{font-family:var(--display);font-size:26px;font-weight:600;color:var(--ink);text-align:center;margin-bottom:8px;letter-spacing:-.01em}.letter-kicker{display:block;text-align:center;font-family:var(--sans);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--accent);margin-bottom:30px}.letter-kicker:after{content:"";display:block;width:36px;height:2px;background:var(--accent);margin:16px auto 0}.parents-letter-content{font-family:var(--display);font-size:17px;color:var(--ink);line-height:1.9;text-align:justify}.parents-letter-content p{margin-bottom:20px;text-indent:2em}.parents-letter-content p:last-child{margin-bottom:0}.parents-letter-content p:first-child::first-letter{font-size:3.4em;float:left;line-height:.82;padding:6px 12px 0 0;font-weight:700;color:var(--accent)}
.tech-stack-section{padding:96px 24px;background:var(--surface-2);border-top:1px solid var(--hairline);overflow:visible!important}.tech-stack-container{max-width:var(--maxw);margin:0 auto;overflow:visible!important}.tech-stack-title{font-family:var(--display);font-size:clamp(1.7rem,3.4vw,2.3rem);font-weight:600;color:var(--ink);text-align:center;margin-bottom:12px;letter-spacing:-.02em}.tech-stack-subtitle{font-family:var(--display);font-style:italic;font-size:16px;color:var(--text-2);text-align:center;max-width:600px;margin:0 auto 40px;line-height:1.65}.tech-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(310px,1fr));column-gap:1px;row-gap:72px;background:transparent;border:0;perspective:900px;overflow:visible!important}.tech-card{border:1px solid var(--hairline)}.tech-card{position:relative;background:var(--surface);border:1px solid var(--hairline);padding:34px 30px 30px;display:flex;flex-direction:column;transition:transform .4s var(--ease-out),box-shadow .4s var(--ease-out),background .35s var(--ease);box-shadow:0 1px 2px rgba(26,26,26,.04)}.tech-card:hover{transform:translateY(-6px);background:var(--tag-bg);box-shadow:0 8px 20px rgba(26,26,26,.08)}.tech-card.reveal{opacity:0;transform:translateY(34px) rotateX(8deg) scale(.96);transform-origin:center bottom}.tech-card.reveal.in{opacity:1;transform:none;transition:opacity .55s var(--ease-out),transform .65s var(--ease-out)}.tech-card.reveal.in:hover{transform:translateY(-14px);box-shadow:0 14px 30px rgba(26,26,26,.12)}.tech-card-num{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--accent);display:block;margin-bottom:12px;font-variant-numeric:tabular-nums}.tech-card-header h4{font-family:var(--display);font-size:19px;font-weight:600;color:var(--ink);line-height:1.35}.tech-desc{font-family:var(--display);font-size:15px;color:var(--text-2);line-height:1.75;margin:14px 0 22px;flex:1}.tech-tags{display:flex;flex-wrap:wrap;gap:8px}.tech-tags span{font-family:var(--sans);font-style:italic;font-size:11px;color:var(--text-2);background:var(--tag-bg);border:1px solid var(--hairline);padding:4px 10px;border-radius:999px}
.floating-cta-bar{position:fixed;bottom:0;left:0;right:0;background:rgba(242,239,231,.88);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid var(--hairline);padding:14px 24px calc(14px + env(safe-area-inset-bottom));display:flex;justify-content:center;gap:14px;z-index:900}.cta-btn{flex:1;max-width:260px;height:50px;border-radius:0;font-family:var(--sans);font-size:15px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all .25s var(--ease);outline:none}.cta-btn-free{background:transparent;border:1.5px solid var(--ink);color:var(--ink)}.cta-btn-free:hover{background:var(--ink);color:var(--ground)}.cta-btn-pay{background:var(--accent);color:#fff;border:1.5px solid var(--accent);position:relative;overflow:hidden}.cta-btn-pay:before{content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.3),transparent);transform:skewX(-18deg);animation:shine 5s var(--ease) infinite}@keyframes shine{0%{left:-60%}22%{left:130%}100%{left:130%}}
.modal-overlay{position:fixed;inset:0;background:rgba(10,14,20,.5);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;z-index:2000;padding:16px;animation:fadeIn .3s var(--ease)}@keyframes fadeIn{from{opacity:0}to{opacity:1}}.modal-card{width:100%;max-width:520px;background:var(--surface);border:1px solid var(--hairline);box-shadow:0 30px 70px rgba(0,0,0,.3);position:relative;display:flex;flex-direction:column;max-height:90vh;animation:slideUp .4s var(--ease-out)}@keyframes slideUp{from{transform:translateY(28px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-close-btn{position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;background:var(--tag-bg);border:1px solid var(--hairline);font-size:18px;color:var(--text-2);cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:10}.modal-header{padding:28px 28px 16px;border-bottom:1px solid var(--hairline)}.modal-header h3{font-family:var(--display);font-size:21px;font-weight:600}.step-indicator{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--accent);margin-top:6px}.modal-body{padding:24px 28px;overflow-y:auto;flex:1}.modal-footer{padding:16px 28px;border-top:1px solid var(--hairline);display:flex;justify-content:flex-end;gap:12px;background:var(--surface-2)}.progress-bar-wrap{width:100%;height:2px;background:var(--hairline);margin-bottom:24px;overflow:hidden}.progress-bar-fill{height:100%;background:var(--accent);transition:width .35s var(--ease)}.form-group{margin-bottom:18px}.form-group:last-child{margin-bottom:0}.form-group label{display:block;font-family:var(--sans);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-2);margin-bottom:8px}.form-select,.form-input{width:100%;height:44px;border:1px solid var(--hairline);background:var(--tag-bg);padding:0 14px;font-family:var(--sans);font-size:14px;color:var(--ink);outline:none}.form-row{display:flex;gap:16px}.form-row .col{flex:1}.radio-group{display:flex;flex-direction:column;gap:8px;border:1px solid var(--hairline);padding:12px;background:var(--tag-bg)}.radio-label{display:flex;align-items:center;gap:9px;font-family:var(--sans);font-size:14px}.radio-label input{accent-color:var(--accent);width:16px;height:16px}.modal-btn{height:42px;padding:0 22px;border-radius:0;font-family:var(--sans);font-size:14px;font-weight:600;cursor:pointer}.modal-btn-secondary{background:transparent;border:1px solid var(--hairline);color:var(--ink)}.modal-btn-primary{background:var(--accent);color:#fff;border:1px solid var(--accent)}.modal-btn-primary:disabled{background:var(--hairline);color:var(--text-3);border-color:var(--hairline);cursor:not-allowed}.pay-tag{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--accent);background:rgba(199,50,46,.08);padding:3px 10px;display:inline-block;margin-top:6px}.pay-modal-body{padding:24px 28px;display:flex;flex-direction:column;gap:22px}.pay-benefits{display:flex;flex-direction:column;gap:16px;border:1px solid var(--hairline);padding:20px}.benefit-item{display:flex;gap:14px}.benefit-icon{color:var(--accent);font-weight:bold;font-size:15px;line-height:1.6}.benefit-text h4{font-family:var(--display);font-size:15px;font-weight:600;margin-bottom:3px}.benefit-text p{font-family:var(--sans);font-size:13px;color:var(--text-2);line-height:1.55}.qr-code-section{text-align:center;display:flex;flex-direction:column;align-items:center}.qr-code-wrap{width:160px;height:160px;border:1px solid var(--hairline);padding:8px;background:#fff;position:relative;margin-bottom:12px}.qr-code-img{width:142px;height:142px;object-fit:contain}.qr-scan-line{position:absolute;left:8px;right:8px;height:2px;background:linear-gradient(to right,transparent,var(--accent),transparent);animation:scan 3s linear infinite}@keyframes scan{0%{top:8px}50%{top:150px}100%{top:8px}}.qr-tip{font-family:var(--display);font-size:15px;font-weight:600;margin-bottom:4px}.qr-subtip{font-family:var(--sans);font-size:12px;color:var(--text-2);max-width:300px;line-height:1.55}.activation-section{border-top:1px solid var(--hairline);padding-top:20px;display:flex;flex-direction:column;gap:10px}.activation-input-wrap{display:flex;gap:8px}.activation-input{flex:1;height:42px;border:1px solid var(--hairline);background:var(--tag-bg);padding:0 14px;font-family:var(--mono);font-size:13px;color:var(--ink);outline:none}.activation-btn{height:42px;padding:0 18px;background:var(--accent);color:#fff;border:1px solid var(--accent);font-family:var(--sans);font-size:14px;font-weight:600;cursor:pointer}.activation-btn:disabled{background:var(--hairline);color:var(--text-3);border-color:var(--hairline);cursor:not-allowed}.activation-status{font-family:var(--sans);font-size:13px;text-align:center;line-height:1.6}.activation-status.success{color:var(--accent-2)}.activation-status.error{color:var(--accent)}
@media(max-width:768px){.top-bar{top:10px;right:12px;font-size:11px;padding:4px 10px}.hero{padding:30px 20px 42px}.hero-title{font-size:clamp(2.25rem,11.2vw,3.8rem)}.hero-title .text-sub{font-size:.38em;line-height:1.35}.row-section{padding:16px 0}.marquee-item{font-size:14px;padding:0 22px;height:42px;line-height:42px}.major-item{font-size:11px;padding:5px 12px;height:30px}.tag-item{font-size:14px}.stat-row{grid-template-columns:repeat(2,1fr);padding:0}.stat-item{padding:14px 10px}.stat-num{font-size:1.35rem}.stat-label{font-size:9.5px;margin-top:6px}.parents-letter-section{padding:28px 16px 56px}.parents-letter-card{padding:34px 24px 30px}.parents-letter-content{font-size:15px;line-height:1.8}.tech-stack-section{padding:64px 0}.tech-grid{display:flex;overflow-x:auto!important;overflow-y:visible!important;scroll-snap-type:x mandatory;gap:14px;padding:48px 20px 24px;background:transparent;border:none;scrollbar-width:none;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain}.tech-card{flex:0 0 280px;width:280px;scroll-snap-align:center;border:1px solid var(--hairline);touch-action:pan-x pan-y}.floating-cta-bar{padding:10px 16px calc(10px + env(safe-area-inset-bottom));gap:10px}.cta-btn{height:46px;font-size:14px}#app{padding-bottom:calc(80px + env(safe-area-inset-bottom))}.modal-card{max-height:88vh}.modal-header{padding:20px 20px 14px}.modal-body{padding:18px 20px}.modal-footer{padding:14px 20px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}.tech-card.reveal{opacity:1!important;transform:none!important}}

/* 最终强制覆盖：确保底部技术卡片 hover 上滑明显，不被 reveal 规则或前序 hover 规则盖掉 */
.tech-card:hover,
.tech-card.reveal:hover,
.tech-card.reveal.in:hover{
  transform:translateY(-48px) scale(1.035)!important;
  box-shadow:0 34px 64px rgba(26,26,26,.22)!important;
  outline:2px solid rgba(199,50,46,.22)!important;
  transition:transform .28s var(--ease-out), box-shadow .28s var(--ease-out), background .28s var(--ease), outline .28s var(--ease)!important;
  position:relative!important;
  z-index:9999!important;
}