.ai4u-sub .e4-section{width:min(calc(100% - 80px),var(--max));margin-inline:auto;min-width:0;color:var(--ink)}
.ai4u-sub .e4-inner{min-width:0}
.ai4u-sub .e4-wash{padding:34px 0;background:var(--wash)}
.ai4u-sub .e4-wash .e4-inner{padding:0 34px}
.ai4u-sub .e4-hero-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(400px,.92fr);gap:clamp(34px,5vw,72px);align-items:center}
.ai4u-sub .e4-hero-copy,.ai4u-sub .e4-copy{min-width:0;max-width:820px}
.ai4u-sub .e4-eyebrow{display:block;margin:0 0 16px;color:#3154bb;font-size:12px;font-weight:800;letter-spacing:.12em}
.ai4u-sub .e4-page-title{margin:0 0 18px;font-size:18px;line-height:1.5}
.ai4u-sub .e4-heading{max-width:900px;margin:0;font-size:clamp(30px,3.2vw,48px);line-height:1.28;letter-spacing:-.055em;word-break:keep-all;overflow-wrap:anywhere}
.ai4u-sub .e4-hero-copy .e4-heading{font-size:clamp(34px,3.5vw,52px)}
.ai4u-sub .e4-lead{max-width:800px;margin:20px 0 0;color:#41547e;font-size:18px;font-weight:650;line-height:1.7}
.ai4u-sub .e4-body{max-width:850px;margin:18px 0 0;color:var(--ink);font-size:16px;line-height:1.85}
.ai4u-sub .e4-purpose,.ai4u-sub .e4-question-list,.ai4u-sub .e4-cost-list{margin:20px 0 0;padding:0;list-style:none}
.ai4u-sub .e4-purpose li,.ai4u-sub .e4-question-list li,.ai4u-sub .e4-cost-list li{margin:0;padding:12px 0;border-top:1px solid var(--line);font-size:15px;line-height:1.7}
.ai4u-sub .e4-purpose li:last-child,.ai4u-sub .e4-question-list li:last-child,.ai4u-sub .e4-cost-list li:last-child{border-bottom:1px solid var(--line)}
.ai4u-sub .e4-actions{display:flex;flex-wrap:wrap;margin:26px 0 0}
.ai4u-sub .e4-actions .wp-block-button__link{min-height:48px;padding:13px 22px;border-radius:7px;background:var(--blue);color:#fff;font-size:14px;font-weight:800}
.ai4u-sub .e4-section a:focus-visible,.ai4u-sub .e4-section summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
.ai4u-sub .e4-matrix-card{min-width:0;padding:24px;border:1px solid var(--line);border-radius:14px;background:var(--wash)}
.ai4u-sub .e4-matrix-label{margin:0 0 17px;color:#3154bb;font-size:13px;font-weight:800;letter-spacing:.04em}
.ai4u-sub .e4-matrix{margin:0;overflow:visible}
.ai4u-sub .e4-matrix table,.ai4u-sub .e4-capability-map table,.ai4u-sub .e4-calendar table{width:100%;table-layout:fixed;border-collapse:collapse}
.ai4u-sub .e4-matrix th,.ai4u-sub .e4-matrix td,.ai4u-sub .e4-capability-map th,.ai4u-sub .e4-capability-map td,.ai4u-sub .e4-calendar th,.ai4u-sub .e4-calendar td{padding:13px 11px;border:1px solid #cbd6f1;font-size:13px;line-height:1.55;vertical-align:top;overflow-wrap:anywhere}
.ai4u-sub .e4-matrix thead th,.ai4u-sub .e4-capability-map thead th,.ai4u-sub .e4-calendar thead th{background:#e9efff;color:#42557e;font-size:12px;font-weight:800}
.ai4u-sub .e4-matrix tbody th,.ai4u-sub .e4-capability-map tbody th,.ai4u-sub .e4-calendar tbody th{background:#f6f9ff;color:#203d9f;font-weight:800}
.ai4u-sub .e4-matrix tbody td,.ai4u-sub .e4-capability-map tbody td,.ai4u-sub .e4-calendar tbody td{background:#fff}
.ai4u-sub .e4-matrix-row>*{transition:background-color .2s,color .2s}
.ai4u-sub .e4-matrix-row.is-active>*{background:#e3ebff;color:#18378f}
.ai4u-sub .e4-matrix-note{margin:15px 0 0;color:#41547e;font-size:13px;line-height:1.6}
.ai4u-sub .e4-capability-map{margin:27px 0 0;overflow:visible}
.ai4u-sub .e4-capability-map thead th{background:var(--deep);color:#fff;font-size:13px}
.ai4u-sub .e4-capability-map tbody th,.ai4u-sub .e4-capability-map tbody td{padding:16px;font-size:14px;line-height:1.65}
.ai4u-sub .e4-history-layout,.ai4u-sub .e4-cost-layout,.ai4u-sub .e4-change-layout,.ai4u-sub .e4-support-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.82fr);gap:clamp(36px,6vw,86px);align-items:center}
.ai4u-sub .e4-history-questions{padding:22px 26px;border-left:3px solid var(--blue);background:var(--wash)}
.ai4u-sub .e4-history-questions .e4-question-list{margin:0}
.ai4u-sub .e4-drill-stack{display:grid;gap:12px;margin-top:27px}
.ai4u-sub .e4-drill-stack article{display:grid;grid-template-columns:54px minmax(0,1fr);gap:17px;align-items:center;padding:19px 22px;border:1px solid var(--line);border-left:4px solid #8198df;background:#fff}
.ai4u-sub .e4-step-index{color:#3154bb;font-size:13px;font-weight:800}
.ai4u-sub .e4-drill-stack article strong{display:block;font-size:16px}
.ai4u-sub .e4-drill-stack article p{margin:5px 0 0;color:#41547e;font-size:15px;line-height:1.65}
.ai4u-sub .e4-diagram-caption{margin:15px 0 0;color:#41547e;font-size:13px;line-height:1.6}
.ai4u-sub .e4-report-sheet{max-width:1000px;margin:26px auto 0;padding:22px 26px;border:1px solid #cbd6f1;border-top:4px solid var(--blue);background:#fff;box-shadow:0 12px 30px rgba(9,23,60,.06)}
.ai4u-sub .e4-report-title{display:flex;justify-content:space-between;gap:16px;padding-bottom:13px;border-bottom:1px solid var(--line);color:#203d9f;font-size:14px;font-weight:800}
.ai4u-sub .e4-report-title span:last-child{color:#657498;font-size:12px}
.ai4u-sub .e4-report-row{display:grid;grid-template-columns:minmax(125px,.45fr) minmax(0,1fr);gap:18px;padding:17px 8px;border-bottom:1px solid var(--line);font-size:15px;line-height:1.65}
.ai4u-sub .e4-report-row:last-child{border-bottom:0}
.ai4u-sub .e4-report-row strong{color:#203d9f}
.ai4u-sub .e4-cost-panel{padding:28px 30px;border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:10px;background:#fff}
.ai4u-sub .e4-cost-list{margin:0}
.ai4u-sub .e4-cost-list li{padding:16px 0}
.ai4u-sub .e4-cost-list strong{display:block;margin-bottom:5px;color:#203d9f}
.ai4u-sub .e4-routine-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(36px,6vw,80px);align-items:center}
.ai4u-sub .e4-calendar{min-width:0;margin:0;overflow:visible}
.ai4u-sub .e4-calendar tbody th,.ai4u-sub .e4-calendar tbody td{padding:17px 16px;font-size:14px;line-height:1.65}
.ai4u-sub .e4-change-steps{display:grid;gap:0;margin:0;padding:0;list-style:none;border-left:2px solid #8198df}
.ai4u-sub .e4-change-steps li{position:relative;display:grid;grid-template-columns:105px minmax(0,1fr);gap:14px;margin-left:23px;padding:17px 12px 17px 23px;border-bottom:1px solid #d9e1f4;background:#fff}
.ai4u-sub .e4-change-steps li:before{position:absolute;left:-31px;top:20px;width:13px;height:13px;border:2px solid var(--blue);border-radius:50%;background:#fff;content:""}
.ai4u-sub .e4-change-steps strong{color:#203d9f;font-size:15px}
.ai4u-sub .e4-change-steps span{font-size:14px;line-height:1.6}
.ai4u-sub .e4-support-layout{grid-template-columns:minmax(0,1fr) minmax(290px,.9fr)}
.ai4u-sub .e4-support-cards a{font-size:14px;line-height:1.55}
.ai4u-sub .e4-support-cards{display:grid;gap:10px}
.ai4u-sub .e4-support-cards a{display:grid;grid-template-columns:minmax(100px,.65fr) minmax(0,1.35fr);gap:12px;padding:15px 17px;border:1px solid var(--line);background:#fff;color:var(--ink);text-decoration:none;transition:border-color .2s,transform .2s}
.ai4u-sub .e4-support-cards a:hover{transform:translateX(3px);border-color:var(--blue)}
.ai4u-sub .e4-support-cards strong{color:#203d9f;font-size:14px}
.ai4u-sub .e4-support-cards span{font-size:13px;line-height:1.55}
.ai4u-sub .e4-cta-panel{padding:36px 40px;border:1px solid var(--line);border-left:5px solid var(--blue);border-radius:10px;background:#fff}
.ai4u-sub .e4-cta-panel .e4-copy{max-width:980px}
.ai4u-sub .e4-cta-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px 22px;margin:21px 0 0;padding-left:20px}
.ai4u-sub .e4-cta-list li{font-size:14px;line-height:1.65}
.ai4u-sub .e4-section [data-entry]{animation:e4-enter .6s ease-out both}
@keyframes e4-enter{from{transform:translateY(10px)}to{transform:translateY(0)}}
@media(max-width:1050px){.ai4u-sub .e4-hero-layout{grid-template-columns:1fr}.ai4u-sub .e4-matrix-card{max-width:760px}.ai4u-sub .e4-history-layout,.ai4u-sub .e4-cost-layout,.ai4u-sub .e4-change-layout,.ai4u-sub .e4-support-layout,.ai4u-sub .e4-routine-layout{grid-template-columns:1fr;gap:28px}}
@media(max-width:800px){.ai4u-sub .e4-section{width:min(calc(100% - 48px),var(--max))}.ai4u-sub .e4-wash{padding:25px 0}.ai4u-sub .e4-wash .e4-inner{padding:0 22px}.ai4u-sub .e4-matrix-card{padding:19px}.ai4u-sub .e4-capability-map{grid-template-columns:minmax(110px,.65fr) minmax(0,1fr)}.ai4u-sub .e4-capability-head span:last-child{display:none}.ai4u-sub .e4-capability-row>*:last-child{grid-column:2}.ai4u-sub .e4-history-layout,.ai4u-sub .e4-cost-layout,.ai4u-sub .e4-change-layout,.ai4u-sub .e4-support-layout,.ai4u-sub .e4-routine-layout{gap:24px}.ai4u-sub .e4-heading,.ai4u-sub .e4-hero-copy .e4-heading{font-size:clamp(30px,7vw,38px)}.ai4u-sub .e4-lead{font-size:16px}.ai4u-sub .e4-report-sheet{padding:17px}.ai4u-sub .e4-calendar-head,.ai4u-sub .e4-calendar-row{grid-template-columns:minmax(100px,.65fr) minmax(0,1.35fr);gap:10px;padding:14px 12px;font-size:14px}.ai4u-sub .e4-change-steps li{grid-template-columns:minmax(80px,.55fr) minmax(0,1fr);gap:8px;padding-right:4px}.ai4u-sub .e4-support-cards a{grid-template-columns:1fr;gap:4px}.ai4u-sub .e4-cta-panel{padding:26px 22px}.ai4u-sub .e4-cta-list{grid-template-columns:1fr;gap:8px}}
@media(max-width:560px){.ai4u-sub .e4-matrix{grid-template-columns:minmax(62px,.5fr) minmax(0,1fr)}.ai4u-sub .e4-matrix-head span:last-child,.ai4u-sub .e4-matrix-row>*:last-child{grid-column:2}.ai4u-sub .e4-matrix-row>*{padding:11px 8px;font-size:12px}.ai4u-sub .e4-capability-map{grid-template-columns:minmax(0,1fr)}.ai4u-sub .e4-capability-head span{display:none}.ai4u-sub .e4-capability-row>*{padding:12px 14px;border-bottom:0}.ai4u-sub .e4-capability-row strong{border-top:1px solid #cbd6f1}.ai4u-sub .e4-capability-row>*:last-child{grid-column:1;padding-top:0}.ai4u-sub .e4-report-row{grid-template-columns:1fr;gap:4px;padding:14px 5px}.ai4u-sub .e4-calendar-head{display:none}.ai4u-sub .e4-calendar-row{grid-template-columns:1fr;gap:4px}.ai4u-sub .e4-drill-stack article{grid-template-columns:38px minmax(0,1fr);padding:16px 14px}.ai4u-sub .e4-cost-panel{padding:20px}.ai4u-sub .e4-matrix-card{padding:15px}}
@media(prefers-reduced-motion:reduce){.ai4u-sub .e4-section [data-entry]{animation:none}.ai4u-sub .e4-section *{scroll-behavior:auto!important;transition:none!important}}