/* ═══ SAVOIR-FAIRE PAGE ═══ */

/* S1: Hero */
.h1-hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;background:var(--bb-bordeaux)}
.h1-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 20% 80%,rgba(193,51,72,.2),transparent 55%),radial-gradient(ellipse at 85% 15%,rgba(25,98,87,.12),transparent 50%)}
.h1-hero::after{content:'';position:absolute;inset:0;opacity:.04;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");background-size:200px}
.h1-hero .ct{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center;width:min(90%,1200px);margin:0 auto}
.h1-left{padding:6rem 0}
.h1-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.15em;color:var(--bb-rose-ancien);margin-bottom:1.5rem;display:flex;align-items:center;gap:.75rem}
.h1-label::before{content:'';width:40px;height:1px;background:var(--bb-rose-ancien)}
.h1-title{font-family:var(--bb-font-display);font-size:clamp(2.2rem,4.5vw,4rem);color:#fff;font-weight:600;letter-spacing:-.03em;line-height:1.05;margin-bottom:1.25rem}
.h1-title em{font-style:normal;color:var(--bb-rose-ancien)}
.h1-sub{font-size:1.1rem;color:rgba(255,255,255,.55);line-height:1.8;margin-bottom:2.5rem;max-width:480px}
.h1-cta{display:inline-flex;align-items:center;gap:.75rem;background:var(--bb-rose-ancien);color:#fff;padding:1rem 2.25rem;border-radius:4px;font-weight:500;text-transform:uppercase;letter-spacing:.05em;font-size:.82rem;transition:.3s;border:none;cursor:pointer;font-family:var(--bb-font-body);text-decoration:none}
.h1-cta:hover{background:#fff;color:var(--bb-bordeaux);transform:translateY(-2px);box-shadow:0 12px 40px rgba(0,0,0,.2)}
.h1-right{position:relative;height:500px}
.h1-tag{position:absolute;padding:.6rem 1.2rem;border-radius:999px;font-size:.8rem;font-weight:500;backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.1);white-space:nowrap;transition:transform .4s,box-shadow .4s}
.h1-tag:hover{transform:scale(1.08)!important;box-shadow:0 8px 30px rgba(0,0,0,.2)}
.h1-tag--a{background:rgba(193,51,72,.2);color:var(--bb-rose-ancien);top:5%;left:10%}
.h1-tag--b{background:rgba(255,255,255,.08);color:rgba(255,255,255,.7);top:15%;right:5%}
.h1-tag--c{background:rgba(25,98,87,.2);color:rgba(25,98,87,.8);top:30%;left:25%}
.h1-tag--d{background:rgba(255,255,255,.06);color:rgba(255,255,255,.5);top:42%;right:15%}
.h1-tag--e{background:rgba(193,51,72,.15);color:var(--bb-rose-ancien);top:55%;left:5%}
.h1-tag--f{background:rgba(255,255,255,.1);color:rgba(255,255,255,.65);top:65%;right:0}
.h1-tag--g{background:rgba(25,98,87,.15);color:rgba(25,98,87,.7);top:78%;left:20%}
.h1-tag--h{background:rgba(255,255,255,.07);color:rgba(255,255,255,.5);top:88%;right:10%}

/* S2: Skills */
.s2-sf{padding:6rem 0;background:var(--bb-bg-white)}
.s2-sf-header{text-align:center;max-width:650px;margin:0 auto 4rem}
.s2-sf-header h2{font-family:var(--bb-font-display);font-size:clamp(1.8rem,3vw,2.5rem);color:var(--bb-bordeaux);font-weight:600;letter-spacing:-.03em;margin-bottom:.75rem}
.s2-sf-header p{color:var(--bb-text-secondary);font-size:1.05rem}
.s2-sf-domains{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.s2-sf-domain{background:var(--bb-bg-cream);border-radius:16px;padding:2rem;position:relative;overflow:hidden;transition:transform .4s,box-shadow .4s}
.s2-sf-domain:hover{transform:translateY(-4px);box-shadow:0 16px 48px rgba(97,26,36,.08)}
.s2-sf-domain__icon{font-size:2rem;margin-bottom:1rem}
.s2-sf-domain__title{font-family:var(--bb-font-display);font-size:1.3rem;color:var(--bb-bordeaux);font-weight:600;margin-bottom:1rem}
.s2-sf-domain__skills{display:flex;flex-wrap:wrap;gap:.4rem}
.s2-sf-skill{padding:.3rem .7rem;border-radius:999px;font-size:.72rem;background:var(--bb-bg-white);color:var(--bb-text-secondary);border:1px solid rgba(97,26,36,.06);transition:.3s}
.s2-sf-skill:hover{background:var(--bb-bordeaux);color:#fff;border-color:var(--bb-bordeaux)}
.s2-sf-count{font-family:var(--bb-font-display);font-size:5rem;font-weight:700;color:var(--bb-bordeaux);opacity:.04;position:absolute;top:-10px;right:12px;line-height:1}

/* S3: Persona */
.s3-sf{padding:6rem 0;background:var(--bb-bg-cream)}
.s3-sf-header{text-align:center;max-width:600px;margin:0 auto 3rem}
.s3-sf-header h2{font-family:var(--bb-font-display);font-size:clamp(1.8rem,3vw,2.5rem);color:var(--bb-bordeaux);font-weight:600;letter-spacing:-.03em}
.s3-sf-personas{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:2.5rem}
.s3-sf-persona{background:var(--bb-bg-white);border:2px solid transparent;border-radius:12px;padding:1.5rem 1rem;text-align:center;cursor:pointer;transition:.3s}
.s3-sf-persona:hover{border-color:var(--bb-rose-ancien);box-shadow:0 8px 30px rgba(97,26,36,.08)}
.s3-sf-persona.active{border-color:var(--bb-rose-ancien);background:rgba(193,51,72,.03)}
.s3-sf-persona__icon{font-size:2.5rem;margin-bottom:.75rem;display:block}
.s3-sf-persona__title{font-family:var(--bb-font-display);font-size:1.05rem;color:var(--bb-bordeaux);font-weight:600;line-height:1.3}
.s3-sf-result{background:var(--bb-bg-white);border-radius:16px;padding:2.5rem;box-shadow:0 4px 20px rgba(97,26,36,.06);display:none;animation:sfFadeUp .4s ease}
.s3-sf-result.active{display:block}
.s3-sf-result__title{font-family:var(--bb-font-display);font-size:1.5rem;color:var(--bb-bordeaux);font-weight:600;margin-bottom:1rem}
.s3-sf-result__text{color:var(--bb-text-secondary);margin-bottom:1.5rem;line-height:1.75}
.s3-sf-result__tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.5rem}
.s3-sf-tag{padding:.4rem .9rem;border-radius:999px;background:rgba(25,98,87,.06);color:var(--bb-vert-profond);font-size:.8rem;font-weight:500}
.s3-sf-result__cta{color:var(--bb-rose-ancien);font-weight:500;font-size:.9rem}
@keyframes sfFadeUp{from{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}

/* S4: Before/After */
.s4-sf{padding:6rem 0;background:var(--bb-bg-white);overflow:hidden}
.s4-sf-header{text-align:center;max-width:600px;margin:0 auto 4rem}
.s4-sf-header h2{font-family:var(--bb-font-display);font-size:clamp(1.8rem,3vw,2.5rem);color:var(--bb-bordeaux);font-weight:600;letter-spacing:-.03em}
.s4-sf-grid{display:grid;grid-template-columns:1fr 60px 1fr;gap:0;align-items:center}
.s4-sf-col{display:flex;flex-direction:column;gap:1rem}
.s4-sf-item{padding:1.25rem 1.5rem;border-radius:12px;font-size:.9rem;line-height:1.5;display:flex;align-items:center;gap:1rem}
.s4-sf-item__icon{font-size:1.5rem;flex-shrink:0}
.s4-sf-before .s4-sf-item{background:rgba(97,26,36,.04);color:var(--bb-text-secondary);border:1px solid rgba(97,26,36,.06)}
.s4-sf-after .s4-sf-item{background:rgba(25,98,87,.04);color:var(--bb-vert-profond);border:1px solid rgba(25,98,87,.08);font-weight:500}
.s4-sf-arrow{display:flex;align-items:center;justify-content:center;font-family:var(--bb-font-display);font-size:2.5rem;color:var(--bb-rose-ancien);font-weight:300}
.s4-sf-label{text-align:center;font-size:.7rem;text-transform:uppercase;letter-spacing:.12em;font-weight:500;margin-bottom:1rem}
.s4-sf-label--before{color:var(--bb-text-secondary)}
.s4-sf-label--after{color:var(--bb-vert-profond)}

/* S5: Tools */
.s5-sf{padding:5rem 0;background:var(--bb-bordeaux);position:relative;overflow:hidden}
.s5-sf::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 60% 50%,rgba(193,51,72,.12),transparent 55%)}
.s5-sf-header{text-align:center;margin-bottom:3rem;position:relative;z-index:1}
.s5-sf-header h2{font-family:var(--bb-font-display);font-size:clamp(1.6rem,2.5vw,2.2rem);color:#fff;font-weight:600;letter-spacing:-.03em}
.s5-sf-header p{color:rgba(255,255,255,.4);font-size:.95rem;margin-top:.5rem}
.s5-sf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;position:relative;z-index:1}
.s5-sf-cat{text-align:center}
.s5-sf-cat__title{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--bb-rose-ancien);margin-bottom:1rem;font-weight:500}
.s5-sf-cat__tools{display:flex;flex-direction:column;gap:.4rem}
.s5-sf-tool{font-size:.85rem;color:rgba(255,255,255,.6);padding:.5rem;border-radius:8px;transition:.3s}
.s5-sf-tool:hover{background:rgba(255,255,255,.08);color:#fff}

/* S6: Case Study */
.s6-sf{padding:6rem 0;background:var(--bb-bg-cream)}
.s6-sf-header{text-align:center;max-width:650px;margin:0 auto 4rem}
.s6-sf-header h2{font-family:var(--bb-font-display);font-size:clamp(1.8rem,3vw,2.5rem);color:var(--bb-bordeaux);font-weight:600;letter-spacing:-.03em;margin-bottom:.5rem}
.s6-sf-header p{color:var(--bb-text-secondary)}
.s6-sf-timeline{position:relative;max-width:800px;margin:0 auto}
.s6-sf-timeline::before{content:'';position:absolute;left:50%;top:0;bottom:0;width:2px;background:linear-gradient(to bottom,var(--bb-bordeaux),var(--bb-rose-ancien),var(--bb-vert-profond));transform:translateX(-50%)}
.s6-sf-step{display:grid;grid-template-columns:1fr 60px 1fr;gap:0;align-items:center;margin-bottom:3rem;position:relative}
.s6-sf-step:nth-child(odd) .s6-sf-step__content{grid-column:1;text-align:right;padding-right:2rem}
.s6-sf-step:nth-child(odd) .s6-sf-step__dot{grid-column:2}
.s6-sf-step:nth-child(odd) .s6-sf-step__empty{grid-column:3}
.s6-sf-step:nth-child(even) .s6-sf-step__empty{grid-column:1}
.s6-sf-step:nth-child(even) .s6-sf-step__dot{grid-column:2}
.s6-sf-step:nth-child(even) .s6-sf-step__content{grid-column:3;padding-left:2rem}
.s6-sf-step__dot{width:44px;height:44px;border-radius:50%;background:var(--bb-bg-cream);border:2px solid var(--bb-bordeaux);display:flex;align-items:center;justify-content:center;font-family:var(--bb-font-display);font-size:1rem;font-weight:600;color:var(--bb-bordeaux);justify-self:center;position:relative;z-index:1;transition:.3s}
.s6-sf-step:hover .s6-sf-step__dot{background:var(--bb-bordeaux);color:#fff}
.s6-sf-step__week{font-size:.65rem;text-transform:uppercase;letter-spacing:.1em;color:var(--bb-rose-ancien);font-weight:500;margin-bottom:.25rem;display:block}
.s6-sf-step__title{font-family:var(--bb-font-display);font-size:1.2rem;color:var(--bb-bordeaux);font-weight:600;margin-bottom:.25rem}
.s6-sf-step__desc{font-size:.85rem;color:var(--bb-text-secondary);line-height:1.6}

/* S7: Differentiators */
.s7-sf{padding:6rem 0;background:var(--bb-bg-white)}
.s7-sf-header{text-align:center;max-width:600px;margin:0 auto 4rem}
.s7-sf-header h2{font-family:var(--bb-font-display);font-size:clamp(1.8rem,3vw,2.5rem);color:var(--bb-bordeaux);font-weight:600;letter-spacing:-.03em}
.s7-sf-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;max-width:900px;margin:0 auto}
.s7-sf-card{background:var(--bb-bg-cream);border-radius:16px;padding:2.5rem;transition:transform .4s,box-shadow .4s}
.s7-sf-card:hover{transform:translateY(-4px);box-shadow:0 16px 48px rgba(97,26,36,.08)}
.s7-sf-card__icon{font-size:2rem;margin-bottom:1rem}
.s7-sf-card__title{font-family:var(--bb-font-display);font-size:1.3rem;color:var(--bb-bordeaux);font-weight:600;margin-bottom:.5rem}
.s7-sf-card__text{font-size:.9rem;color:var(--bb-text-secondary);line-height:1.7}

/* S8: Testimonials */
.s8-sf{padding:6rem 0;background:var(--bb-bg-cream)}
.s8-sf-header{text-align:center;margin-bottom:3.5rem}
.s8-sf-header h2{font-family:var(--bb-font-display);font-size:clamp(1.8rem,3vw,2.5rem);color:var(--bb-bordeaux);font-weight:600;letter-spacing:-.03em}
.s8-sf-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.s8-sf-card{background:var(--bb-bg-white);border-radius:12px;padding:2rem;box-shadow:0 2px 12px rgba(97,26,36,.04);transition:transform .4s,box-shadow .4s}
.s8-sf-card:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(97,26,36,.08)}
.s8-sf-card__stars{color:var(--bb-rose-ancien);font-size:.75rem;letter-spacing:2px;margin-bottom:.75rem}
.s8-sf-card__text{font-size:.9rem;color:var(--bb-text-primary);line-height:1.7;font-style:italic;margin-bottom:1.25rem}
.s8-sf-card__author{display:flex;align-items:center;gap:.6rem}
.s8-sf-card__avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--bb-rose-ancien),var(--bb-marsala));display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--bb-font-display);font-size:.95rem;font-weight:600}
.s8-sf-card__name{font-weight:500;font-size:.85rem}
.s8-sf-card__role{font-size:.72rem;color:var(--bb-text-secondary)}

/* S9: FAQ */
.s9-sf{padding:6rem 0;background:var(--bb-bg-white)}
.s9-sf-header{text-align:center;max-width:550px;margin:0 auto 3rem}
.s9-sf-header h2{font-family:var(--bb-font-display);font-size:clamp(1.8rem,3vw,2.5rem);color:var(--bb-bordeaux);font-weight:600;letter-spacing:-.03em;margin-bottom:.5rem}
.s9-sf-header p{color:var(--bb-text-secondary);font-size:.95rem}
.s9-sf-list{max-width:700px;margin:0 auto}
.s9-sf-item{border-bottom:1px solid rgba(97,26,36,.06)}
.s9-sf-item__q{display:flex;justify-content:space-between;align-items:center;padding:1.25rem 0;cursor:pointer;font-size:1rem;color:var(--bb-text-primary);font-weight:500;transition:.3s;gap:1rem}
.s9-sf-item__q:hover{color:var(--bb-rose-ancien)}
.s9-sf-item__icon{font-size:1.2rem;color:var(--bb-rose-ancien);transition:transform .3s;flex-shrink:0}
.s9-sf-item.open .s9-sf-item__icon{transform:rotate(45deg)}
.s9-sf-item__a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s}
.s9-sf-item.open .s9-sf-item__a{max-height:300px;padding-bottom:1.25rem}
.s9-sf-item__a p{font-size:.9rem;color:var(--bb-text-secondary);line-height:1.75}

/* S10: CTA */
.s10-sf{background:var(--bb-bordeaux);padding:7rem 0;text-align:center;position:relative;overflow:hidden}
.s10-sf::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 100%,rgba(193,51,72,.2),transparent 55%)}
.s10-sf h2{font-family:var(--bb-font-display);font-size:clamp(2rem,4vw,3rem);color:#fff;font-weight:600;letter-spacing:-.03em;margin-bottom:.5rem;position:relative}
.s10-sf-sub{color:rgba(255,255,255,.5);font-size:1.05rem;margin-bottom:2.5rem;position:relative}
.s10-sf-cta{display:inline-flex;align-items:center;gap:.75rem;background:#fff;color:var(--bb-bordeaux);padding:1.1rem 2.5rem;border-radius:4px;font-weight:500;text-transform:uppercase;letter-spacing:.05em;font-size:.85rem;transition:.3s;text-decoration:none;position:relative;font-family:var(--bb-font-body)}
.s10-sf-cta:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(0,0,0,.2);color:var(--bb-bordeaux)}
.s10-sf-micro{font-size:.75rem;color:rgba(255,255,255,.3);margin-top:1.25rem;position:relative}

/* Container helper */
.ct{width:min(90%,1200px);margin:0 auto}

/* Responsive */
@media(max-width:999px){.h1-hero .ct{grid-template-columns:1fr}.h1-right{display:none}.h1-left{padding:8rem 0 5rem}}
@media(max-width:767px){
    .s2-sf-domains{grid-template-columns:1fr}
    .s3-sf-personas{grid-template-columns:repeat(2,1fr)}
    .s4-sf-grid{grid-template-columns:1fr;gap:2rem}.s4-sf-arrow{transform:rotate(90deg)}
    .s5-sf-grid{grid-template-columns:repeat(2,1fr);gap:2rem}
    .s6-sf-timeline::before{left:22px}
    .s6-sf-step{grid-template-columns:44px 1fr;gap:1.5rem}
    .s6-sf-step__content,.s6-sf-step:nth-child(odd) .s6-sf-step__content,.s6-sf-step:nth-child(even) .s6-sf-step__content{grid-column:2;text-align:left;padding:0}
    .s6-sf-step__dot,.s6-sf-step:nth-child(odd) .s6-sf-step__dot,.s6-sf-step:nth-child(even) .s6-sf-step__dot{grid-column:1}
    .s6-sf-step__empty{display:none}
    .s7-sf-grid{grid-template-columns:1fr}
    .s8-sf-grid{grid-template-columns:1fr}
}