.process__timeline{margin-top:28px;display:grid;grid-gap:16px;gap:16px}.process__step{display:grid;grid-gap:6px;gap:6px;padding:22px;border-radius:0 22px 22px 0;background:var(--color-white);border:1px solid var(--color-border);border-left:3px solid var(--color-accent);box-shadow:var(--shadow-soft)}.process__day{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-muted);font-size:.85rem}.process__step h3{margin-bottom:8px}.process__step-desc{color:var(--color-text-body);line-height:1.7}.tech-stack{background-color:var(--color-white);padding-bottom:120px}.tech-stack__header{margin-bottom:64px}.tech-stack__title{margin-top:12px;font-size:clamp(2rem,4vw,3rem)}.tech-stack__list{border-top:1px solid var(--color-border)}.tech-stack__row{border-bottom:1px solid var(--color-border);overflow:hidden}.tech-stack__trigger{width:100%;display:flex;justify-content:space-between;align-items:center;padding:32px 0;background:none;border:none;cursor:pointer;text-align:left;transition:padding .4s ease}.tech-stack__row.is-open .tech-stack__trigger{padding-bottom:16px}.tech-stack__category-name{font-size:clamp(1.2rem,2vw,1.8rem);font-weight:500;color:var(--color-text-primary);letter-spacing:-.02em}.tech-stack__icon{width:24px;height:24px;position:relative}.tech-stack__icon-line{position:absolute;top:50%;left:0;width:100%;height:2px;background-color:var(--color-primary);transition:transform .4s cubic-bezier(.2,0,0,1)}.tech-stack__icon-line--v{transform:rotate(90deg)}.tech-stack__row.is-open .tech-stack__icon-line--v{transform:rotate(0deg)}.tech-stack__content-wrap{display:grid;grid-template-rows:0fr;transition:grid-template-rows .5s cubic-bezier(.2,0,0,1),padding .5s ease}.tech-stack__row.is-open .tech-stack__content-wrap{grid-template-rows:1fr;padding-bottom:48px}.tech-stack__content{overflow:hidden}.tech-stack__items-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:32px;gap:32px;padding-top:24px}.tech-stack__detail{display:flex;flex-direction:column;gap:6px}.tech-stack__detail-label{font-size:.7rem;font-weight:700;letter-spacing:.1em;color:var(--color-text-muted);text-transform:uppercase}.tech-stack__detail-value{font-size:1rem;font-weight:500;color:var(--color-text-body)}@media (max-width:1024px){.tech-stack__items-grid{grid-template-columns:repeat(2,1fr);gap:24px}}@media (max-width:768px){.tech-stack{padding-bottom:80px}.tech-stack__trigger{padding:24px 0}.tech-stack__items-grid{grid-template-columns:1fr;gap:20px}.tech-stack__row.is-open .tech-stack__content-wrap{padding-bottom:32px}.tech-stack__detail-value{font-size:.95rem}}