/* Professional English Section 6 only — v585. Other sections untouched. */
.c2-pro-method-section{position:relative;isolation:isolate;background:#f5f3ed;padding:48px 0 43px;overflow:hidden}
.c2-pro-method-section::before{content:"";position:absolute;inset:0;z-index:-1;background-image:linear-gradient(90deg,rgba(245,243,237,.98) 0%,rgba(245,243,237,.96) 46%,rgba(245,243,237,.68) 76%,rgba(245,243,237,.45) 100%),url('../assets/images/online-courses/professional-english/professional-method-background.webp');background-size:cover;background-position:center right;background-repeat:no-repeat}
.c2-method-inner{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(30px,5vw,74px);align-items:start}
.c2-method-intro h2{font-size:clamp(30px,3vw,43px);margin:12px 0 16px;line-height:1.19}
.c2-method-intro h2 em{display:block}
.c2-method-intro p{max-width:380px;margin:0;color:#475f67;line-height:1.65}
.c2-method-accordion{border-top:1px solid rgba(26,58,72,.24)}
.c2-method-accordion details{border-bottom:1px solid rgba(26,58,72,.24)}
.c2-method-accordion summary{list-style:none;display:flex;align-items:center;gap:16px;min-height:64px;cursor:pointer;color:#17374c;padding:12px 3px}
.c2-method-accordion summary::-webkit-details-marker{display:none}
.c2-method-index{font:500 12px/1 'DM Sans',Arial,sans-serif;color:#a47744;letter-spacing:.08em;min-width:26px}
.c2-method-label{font:500 clamp(15px,1.3vw,18px)/1.35 'DM Sans',Arial,sans-serif;flex:1}
.c2-method-plus{font:300 25px/1 'DM Sans',Arial,sans-serif;color:#a47744;transition:transform .2s}
.c2-method-accordion details[open] .c2-method-plus{transform:rotate(45deg)}
.c2-method-copy{padding:0 38px 20px 45px;color:#425b65;font:400 14px/1.75 'DM Sans',Arial,sans-serif;max-width:610px}
.c2-method-accordion summary:focus-visible{outline:2px solid #b78042;outline-offset:3px}
.c2-method-footnote{grid-column:1/-1;margin:0!important;padding-top:2px;font-size:12px!important;color:#7c7a71!important;letter-spacing:.015em}
@media(max-width:760px){.c2-method-inner{grid-template-columns:1fr;gap:25px}.c2-pro-method-section{padding:42px 0}.c2-pro-method-section::before{background-image:linear-gradient(rgba(245,243,237,.94),rgba(245,243,237,.94)),url('../assets/images/online-courses/professional-english/professional-method-background.webp')}.c2-method-intro h2 em{display:inline}.c2-method-accordion summary{min-height:60px}}
@media(prefers-reduced-motion:reduce){.c2-method-plus{transition:none}}