.ai-simulation-body{margin:0;overflow:hidden;background:#b7cee7;color:#202a39}.ai-simulation-body .site{min-height:100vh}.ai-simulation-page{height:calc(100vh - var(--header));min-height:640px;margin-top:var(--header);padding:28px 20px;background:url('../images/pages/ai-guide/simulation/simulation-bg.webp') center/cover no-repeat;position:relative;overflow:hidden}.ai-simulation-page:before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(77,128,181,.08),rgba(30,61,83,.12));pointer-events:none}.simulation-shell{position:relative;z-index:1;width:min(1260px,100%);height:100%;margin:0 auto;padding:36px;display:grid;grid-template-columns:190px minmax(0,1fr);gap:32px;border:1px solid rgba(255,255,255,.82);border-radius:28px;background:rgba(230,239,247,.63);box-shadow:0 16px 50px rgba(28,61,94,.14);backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);overflow:hidden}.simulation-nav{min-width:0;display:flex;flex-direction:column;border-right:1px solid rgba(24,40,57,.15);padding-right:20px}.simulation-nav__title{font-size:24px;font-weight:500;margin:0 0 24px}.simulation-nav__group{border-bottom:1px solid rgba(27,40,52,.25)}.simulation-nav__group:last-child{border-bottom:0}.simulation-nav__category{width:100%;display:flex;align-items:center;justify-content:space-between;padding:14px 4px;border:0;background:none;font:inherit;font-size:17px;cursor:pointer}.simulation-nav__arrow{width:22px;height:22px;background:url('../images/pages/ai-guide/simulation/icon-arrow.webp') center/contain no-repeat;transition:transform .25s}.simulation-nav__group.is-open .simulation-nav__arrow{transform:rotate(0deg)}.simulation-nav__group:not(.is-open) .simulation-nav__arrow{transform:rotate(180deg)}.simulation-nav__links{display:none;padding:0 0 16px}.simulation-nav__group.is-open .simulation-nav__links{display:grid;gap:8px}.simulation-nav__links a{padding:9px 12px;border-radius:999px;color:inherit;text-decoration:none;font-size:17px;line-height:1.35}.simulation-nav__links a:hover,.simulation-nav__links a.is-current{background:rgba(255,255,255,.62)}.simulation-content{min-width:0;height:100%;overflow:hidden}.simulation-view{display:none;height:100%}.simulation-view.is-active{display:flex;flex-direction:column}.simulation-scroll{height:100%;overflow-y:auto;overflow-x:hidden;padding-right:8px;scrollbar-width:thin;scrollbar-color:#193a70 transparent}.simulation-scroll::-webkit-scrollbar{width:6px}.simulation-scroll::-webkit-scrollbar-track{background:transparent}.simulation-scroll::-webkit-scrollbar-thumb{background:#193a70;border-radius:999px}.simulation-home{justify-content:center}.simulation-home__header{text-align:center;margin-bottom:24px}.simulation-home__header h1,.simulation-question__header h1{margin:0 0 10px;font-size:34px;line-height:1.2}.simulation-home__header p,.simulation-question__header p{margin:0;font-size:17px;line-height:1.7}.phase-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:20px}.phase-card,.checkpoint-card,.question-card,.answer-option,.feedback-card,.result-summary,.result-item{background:rgba(255,255,255,.56);border:1px solid rgba(255,255,255,.4);border-radius:18px}.phase-card{position:relative;min-height:148px;padding:18px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;transition:background .2s}.phase-card:hover,.checkpoint-card:hover{background:rgba(255,255,255,.76)}.phase-card__time{font-size:17px}.phase-card h3{font-size:18px;margin:4px 0}.phase-card p{font-size:17px;margin:0}.phase-card img{position:absolute;right:12px;top:12px;width:52px;height:52px;object-fit:contain}.checkpoint-label{font-size:17px;margin:0 0 10px 18px}.checkpoint-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.checkpoint-card{min-height:92px;padding:18px;transition:background .2s}.checkpoint-card h3{font-size:18px;margin:0 0 10px}.checkpoint-card p{font-size:17px;line-height:1.5;margin:0}.primary-action{align-self:center;margin-top:22px;min-width:170px;height:52px;border:0;border-radius:999px;background:#183d79;color:#fff;font-weight:700;font-size:17px;display:inline-flex;align-items:center;justify-content:center;gap:16px;cursor:pointer;text-decoration:none;box-shadow:0 8px 18px rgba(24,61,121,.14);transition:transform .24s ease,box-shadow .24s ease,background-color .24s ease}.primary-action:hover{transform:translateY(-3px);box-shadow:0 14px 26px rgba(24,61,121,.24);background:#204887}.primary-action:active{transform:translateY(-1px);box-shadow:0 8px 16px rgba(24,61,121,.18)}.primary-action:after{content:"";width:18px;height:18px;background:url('../images/pages/ai-guide/simulation/icon-arrow.webp') center/contain no-repeat;filter:brightness(0) invert(1);transform:rotate(90deg)}.simulation-question__header{text-align:left;margin-bottom:18px}.progress-wrap{background:rgba(255,255,255,.58);border-radius:16px;padding:14px 18px;margin-bottom:16px}.progress-labels{display:grid;grid-template-columns:repeat(8,1fr);font-size:17px;gap:8px;margin-bottom:10px}.progress-track{--progress-ratio:0;position:relative;display:grid;grid-template-columns:repeat(15,1fr);align-items:center;height:14px;padding:0 7px}.progress-track:before,.progress-track:after{content:"";position:absolute;left:7px;right:7px;top:50%;height:4px;border-radius:999px;transform:translateY(-50%)}.progress-track:before{background:#fff}.progress-track:after{right:auto;width:calc((100% - 14px) * var(--progress-ratio));background:#1b3e75}.progress-dot{position:relative;z-index:1;width:14px;height:14px;border-radius:50%;background:#fff;justify-self:center}.progress-dot.is-complete,.progress-dot.is-current{background:#1b3e75}.question-card{padding:18px;margin-bottom:14px;background: rgba(255,255,255);}.question-card__meta{font-size:17px;margin-bottom:6px}.question-card h2{font-size:21px;margin:0 0 4px}.question-card__en{font-size:17px;margin:0 0 22px}.question-card__situation{font-size:18px;line-height:1.65;margin:0}.answer-prompt{font-size:17px;margin:0 0 10px}.answers{display:grid;gap:12px}.answer-option{width:100%;min-height:64px;padding:0 20px;display:grid;grid-template-columns:28px 1fr auto;align-items:center;gap:10px;border:0;text-align:left;font:inherit;font-size:17px;cursor:pointer;transition:transform .18s,background .18s}.answer-option:hover{transform:translateY(-1px);background:rgba(255,255,255,.8)}.answer-option.is-selected{background-image:var(--tone-image);background-size:cover;background-position:center;color:inherit;opacity:1}.answer-option__score{font-size:17px;font-weight:700;color:#143b74}.feedback-grid{display:none;grid-template-columns:1fr 1fr;gap:16px;margin-top:14px}.feedback-grid.is-visible{display:grid}.feedback-card{padding:18px;background:rgba(255,255,255,.84)}.feedback-card--fact{background:rgba(226,237,255,.86);color:#173d77}.feedback-card strong{display:block;font-size:17px;margin-bottom:8px}.feedback-card p{font-size:17px;line-height:1.55;margin:0}.question-next{display:none}.question-next.is-visible{display:inline-flex}.simulation-result__head{display:grid;grid-template-columns:minmax(0,.75fr) minmax(0,1.25fr);gap:20px;align-items:start;margin-bottom:16px}.grade-block{display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:center}.grade-letter{font-size:64px;line-height:1;font-weight:800}.grade-block h1{font-size:24px;margin:0}.grade-block p{font-size:17px;margin:3px 0 0}.result-summary{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:18px}.result-score{border-right:1px solid rgba(32,44,58,.18)}.result-score span{display:block;font-size:17px}.result-score strong{font-size:20px}.result-summary p{margin:0;font-size:17px;line-height:1.55}.result-list-title{font-size:17px;margin:0 0 10px}.result-list{display:grid;gap:10px}.result-item{padding:14px 16px;display:grid;grid-template-columns:1fr auto;gap:16px;background-image:var(--tone-image);background-size:cover;background-position:center}.result-item__meta{font-size:17px;margin-bottom:5px}.result-item__phase{font-weight:400}.result-item__title{font-weight:700}.result-item h3{font-size:17px;margin:0 0 4px}.result-item p{font-size:17px;margin:0}.result-item strong{font-size:18px;color:#153b73;align-self:center}.result-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}.result-actions button,.result-actions a{min-height:56px;border-radius:14px;border:0;background:#fff;color:#1d2735;font-weight:700;font-size:17px;display:flex;align-items:center;justify-content:center;text-decoration:none;cursor:pointer}.result-actions a{background:#183d79;color:#fff}
@media(max-width:1100px){.ai-simulation-body{overflow:auto}.ai-simulation-page{height:auto;min-height:calc(100vh - var(--header));margin-top:var(--header);padding:24px 16px}.simulation-shell{height:auto;min-height:calc(100vh - 120px);grid-template-columns:1fr;padding:22px}.simulation-nav{border-right:0;border-bottom:1px solid rgba(24,40,57,.15);padding:0 0 14px}.simulation-nav__title{margin-bottom:8px}.simulation-nav__group:not(.is-open){display:none}.simulation-nav__links{grid-template-columns:repeat(2,minmax(0,1fr))}.simulation-content{height:auto}.simulation-view{height:auto}.simulation-scroll{height:auto;overflow:visible;padding-right:0}.phase-grid{grid-template-columns:repeat(2,1fr)}.checkpoint-grid{grid-template-columns:1fr}.progress-labels{overflow-x:auto}.simulation-result__head{grid-template-columns:1fr}.result-summary{grid-template-columns:1fr}.result-score{border-right:0;border-bottom:1px solid rgba(32,44,58,.18);padding-bottom:12px}}
@media(max-width:640px){.ai-simulation-page{padding:14px 10px}.simulation-shell{padding:18px 14px;border-radius:20px;gap:20px}.simulation-nav__links{grid-template-columns:1fr}.simulation-home__header h1,.simulation-question__header h1{font-size:28px}.phase-grid{grid-template-columns:1fr}.phase-card{min-height:130px}.progress-labels{grid-template-columns:repeat(8,90px)}.feedback-grid{grid-template-columns:1fr}.answer-option{grid-template-columns:24px 1fr auto;font-size:17px;padding:0 14px}.result-actions{grid-template-columns:1fr}.grade-letter{font-size:54px}.simulation-result__head{gap:12px}}

/* 2026-07 simulation layout/progress/mobile navigation refinement */
.ai-simulation-page{
  height:calc(100vh - 88px);
  margin-top:88px;
}

.simulation-nav__title{
  width:100%;
  padding:0;
  border:0;
  background:transparent;
  color:inherit;
  text-align:left;
  font:inherit;
  font-size:24px;
  font-weight:500;
  display:flex;
  align-items:center;
  justify-content:space-between;
  cursor:default;
}
.simulation-nav__title-arrow{display:none;width:22px;height:22px;background:url('../images/pages/ai-guide/simulation/icon-arrow.webp') center/contain no-repeat;transition:transform .25s ease}

.progress-labels{
  grid-template-columns:repeat(15,minmax(0,1fr));
  gap:0;
}
.progress-labels span{min-width:0;text-align:center;white-space:nowrap;justify-self:center}
.progress-labels span:nth-child(1){grid-column:1}
.progress-labels span:nth-child(2){grid-column:3}
.progress-labels span:nth-child(3){grid-column:5}
.progress-labels span:nth-child(4){grid-column:8}
.progress-labels span:nth-child(5){grid-column:9}
.progress-labels span:nth-child(6){grid-column:11}
.progress-labels span:nth-child(7){grid-column:12}
.progress-labels span:nth-child(8){grid-column:14}
.progress-track{
  display:flex;
  justify-content:space-between;
  padding:0;
}

.progress-track:before,.progress-track:after{left:7px;right:7px}
.progress-track:after{right:auto;width:calc((100% - 14px) * var(--progress-ratio))}

.answer-option,.result-item{position:relative;overflow:hidden}
.answer-option.is-selected,.answer-option.is-selected:hover,.result-item{background-repeat:no-repeat!important;background-position:0 0!important;background-size:100% 100%!important}
.answer-option.is-selected.tone-good,.result-item.tone-good{background-image:linear-gradient(90deg,rgba(255,255,255,.50) 0%,rgba(205,216,255,.50) 45%,rgba(79,119,246,.50) 100%)!important}
.answer-option.is-selected.tone-neutral,.result-item.tone-neutral{background-image:linear-gradient(90deg,rgba(255,255,255,.50) 0%,rgba(207,255,226,.50) 45%,rgba(89,244,146,.50) 100%)!important}
.answer-option.is-selected.tone-bad,.result-item.tone-bad{background-image:linear-gradient(90deg,rgba(255,255,255,.50) 0%,rgba(255,215,229,.50) 45%,rgba(250,108,157,.50) 100%)!important}
.answer-option.is-selected,.answer-option.is-selected:hover{color:inherit;opacity:1}

@media(max-width:1100px){
  .ai-simulation-page{height:auto;min-height:calc(100vh - 88px);margin-top:88px}
  .simulation-nav__title{cursor:pointer;margin-bottom:0}
  .simulation-nav__title-arrow{display:block;transform:rotate(180deg)}
  .simulation-nav.is-mobile-open .simulation-nav__title-arrow{transform:rotate(0deg)}
  .simulation-nav:not(.is-mobile-open) .simulation-nav__group{display:none}
  .simulation-nav.is-mobile-open .simulation-nav__group{display:block}
}

@media(max-width:640px){
  .ai-simulation-page{min-height:calc(100vh - 72px);margin-top:72px}
  .progress-wrap{padding:12px 14px}
  .progress-labels,.progress-dot{display:none}
  .progress-track{height:8px;display:block}
  .progress-track:before,.progress-track:after{left:0;right:0;height:8px}
  .progress-track:after{right:auto;width:calc(100% * var(--progress-percent))}
}

/* 2026-07 progress phase-label alignment refinement
   Align each phase label center to the center of its first question dot.
   Dot centers are distributed across 14 equal intervals from dot 1 to dot 15. */
@media (min-width:641px){
  .progress-labels{
    position:relative;
    display:block;
    height:20px;
    margin-bottom:10px;
  }
  .progress-labels span{
    position:absolute;
    top:0;
    width:max-content;
    max-width:none;
    text-align:center;
    white-space:nowrap;
    transform:translateX(-50%);
    justify-self:auto;
  }
  .progress-labels span:nth-child(1){left:2.5%;grid-column:auto}
  .progress-labels span:nth-child(2){left:14.5%;grid-column:auto}
  .progress-labels span:nth-child(3){left:28.571429%;grid-column:auto}
  .progress-labels span:nth-child(4){left:50%;grid-column:auto}
  .progress-labels span:nth-child(5){left:57.142857%;grid-column:auto}
  .progress-labels span:nth-child(6){left:71%;grid-column:auto}
  .progress-labels span:nth-child(7){left:78.571429%;grid-column:auto}
  .progress-labels span:nth-child(8){left:92%;grid-column:auto}
}

/* AI detail typography normalization */
.ai-simulation-body h1{font-size:28px!important}
.ai-simulation-body h2{font-size:21px!important}
.ai-simulation-body h3{font-size:18px!important}
.ai-simulation-body input::placeholder,.ai-simulation-body textarea::placeholder{font-size:17px!important}
.ai-simulation-body h2 + p,.ai-simulation-body h3 + p{font-size:17px!important}
.ai-simulation-body h1 + p{font-size:18px!important}

h4{font-size:17px}