/* ==========================================================================
   Yiangou Nutrition: public website
   Header, mobile menu, footer and the marketing page sections. Mobile first.
   ========================================================================== */

body.site{overflow-x:hidden}
.section{padding-block:var(--sec)}
.section--tint{background:var(--brand-wash)}
.section--intro{padding-bottom:var(--s8)}
.section--flush-top{padding-top:0}
.section-head{text-align:center;margin-bottom:var(--s7)}
.section-head .lead{margin-top:var(--s4);max-width:36em;margin-inline:auto}
.intro .lead{margin-top:var(--s5)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.84);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid var(--line-soft);transition:box-shadow var(--dur) var(--ease)}
.is-scrolled .site-header{box-shadow:0 1px 0 var(--line),0 4px 16px rgba(21,21,20,.04)}
.site-header__bar{display:flex;align-items:center;justify-content:space-between;gap:var(--s4);height:var(--header-h)}
.site-logo{display:flex;align-items:center}
.site-logo img{height:38px;width:auto}
.site-nav,.site-actions{display:none}
.site-nav a{color:var(--ink);font-weight:700;font-size:var(--fs-md)}
.site-nav a:hover,.site-nav a[aria-current="page"]{color:var(--brand)}
.site-actions .link-icon{color:var(--ink)}
.site-actions .link-icon:hover{color:var(--brand)}

.burger{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:var(--radius);border:1px solid var(--line);background:var(--white);color:var(--ink)}
.burger .burger__close,.burger[aria-expanded="true"] .burger__open{display:none}
.burger[aria-expanded="true"] .burger__close{display:inline-block}

.site-menu{border-top:1px solid var(--line-soft);background:var(--white);padding:var(--s2) var(--pad) var(--s6);max-height:calc(100dvh - var(--header-h));overflow-y:auto}
.site-menu a:not(.btn){display:block;padding:15px 2px;font-weight:700;font-size:17px;color:var(--ink);border-bottom:1px solid var(--line-faint)}
.site-menu a[aria-current="page"]{color:var(--brand)}
.site-menu .btn{width:100%;margin-top:var(--s5)}

@media (min-width:768px){.site-logo img{height:44px}}
@media (min-width:960px){
  .site-nav{display:flex;gap:28px;align-items:center}
  .site-actions{display:flex;align-items:center;gap:18px}
  .burger,.site-menu{display:none}
}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--night-text);padding-bottom:64px}
.footer-cols{display:grid;gap:var(--s7);padding-block:var(--sec) var(--s8)}
.footer-cols .logo-tile{margin-bottom:var(--s5);padding:14px}
.footer-cols .logo-tile img{height:56px}
.footer-blurb{font-size:14px;line-height:1.6;color:var(--night-muted);max-width:25em}
.footer-heading{font-family:var(--font-body);font-weight:800;font-size:var(--fs-sm);color:var(--night-text);margin-bottom:18px}
.footer-links{list-style:none;padding:0;display:flex;flex-direction:column;gap:12px;font-size:14px}
.footer-links a,.footer-links button{color:var(--night-muted);background:none;border:0;padding:0;font-size:14px;text-align:left}
.footer-links a:hover,.footer-links button:hover{color:var(--white)}
.footer-bottom{border-top:1px solid var(--night-line)}
.footer-bottom p{padding-block:26px;font-size:var(--fs-sm);color:var(--night-muted)}
@media (min-width:600px){.footer-cols{grid-template-columns:1fr 1fr}.footer-cols > :first-child{grid-column:1 / -1}}
@media (min-width:960px){.footer-cols{grid-template-columns:2fr 1fr 1fr 1fr}.footer-cols > :first-child{grid-column:auto}}

/* ---------- Home ---------- */
.hero{display:grid;gap:var(--s8)}
.hero__title{margin-top:var(--s6)}
.hero__text{max-width:31em;margin-top:var(--s6)}
.hero__note{margin-top:var(--s6);font-size:14px;color:var(--text-muted);font-weight:600}
.hero__media{height:clamp(300px,72vw,480px)}
@media (min-width:960px){.hero{grid-template-columns:1.05fr .95fr;gap:72px;align-items:center}}

.cta-row{display:flex;flex-direction:column;gap:var(--s3);margin-top:var(--s7)}
@media (min-width:600px){.cta-row{flex-direction:row;flex-wrap:wrap}}

.values{display:grid;gap:var(--s5);padding-block:var(--s8)}
.value{display:flex;align-items:center;gap:15px}
.value__title{font-weight:800}
.value__text{font-size:14px;color:var(--text-muted);margin-top:2px}
@media (min-width:600px){.values{grid-template-columns:1fr 1fr}}
@media (min-width:768px){.values{grid-template-columns:repeat(3,1fr)}}

.explore{display:grid;gap:var(--s5)}
.navcard{display:flex;flex-direction:column;gap:var(--s3);color:inherit;transition:border-color var(--dur) var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease-out)}
.navcard:hover{border-color:var(--outline);color:inherit;box-shadow:var(--shadow-sm)}
.navcard .ico{transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease)}
.navcard:hover .ico{background:var(--brand);color:var(--white)}
.navcard .link-icon .icon{transition:transform var(--dur) var(--ease)}
.navcard:hover .link-icon .icon{transform:translateX(3px)}
.navcard .link-icon{color:var(--brand);margin-top:auto;padding-top:var(--s2)}
@media (min-width:600px){.explore{grid-template-columns:1fr 1fr}}
@media (min-width:960px){.explore{grid-template-columns:repeat(4,1fr)}}

.socials-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--s5);flex-wrap:wrap;padding-top:var(--sec);margin-bottom:var(--s7)}
.scroller{display:flex;gap:var(--s4);overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 0 18px;scrollbar-width:thin}
.thumb{flex:0 0 auto;width:200px;aspect-ratio:4/5;border-radius:var(--radius-lg);background:var(--surface-muted);scroll-snap-align:start;position:relative;overflow:hidden;display:flex;align-items:flex-end;padding:var(--s4)}
.thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.thumb__tag{position:relative;display:inline-flex;align-items:center;gap:7px;background:var(--white);border-radius:var(--radius);padding:6px 10px;font-size:var(--fs-xs);font-weight:700;color:var(--ink)}
.thumb__tag .icon{color:var(--brand)}
.thumb--link{color:inherit;text-decoration:none;transition:transform .2s ease,box-shadow .2s ease}
.thumb--link img{transition:transform .35s ease}
.thumb--link:hover img,.thumb--link:focus-visible img{transform:scale(1.04)}
.thumb--link:focus-visible{outline:3px solid var(--brand);outline-offset:3px}
@media (prefers-reduced-motion:reduce){.thumb--link img{transition:none}.thumb--link:hover img{transform:none}}
@media (min-width:768px){.thumb{width:218px}}

.cta-band{background:var(--brand);border-radius:var(--radius-2xl);padding:clamp(32px,7vw,72px);display:flex;flex-direction:column;align-items:flex-start;gap:var(--s7)}
.cta-band__title{font-size:clamp(26px,5.5vw,44px);line-height:1.12;letter-spacing:-.025em;color:var(--white);max-width:16em}
.cta-band__text{margin-top:var(--s4);font-size:clamp(16px,3.6vw,18px);color:var(--brand-tint);max-width:32em}
.cta-band--center{align-items:center;text-align:center}
.cta-band--center .cta-band__title{max-width:16em;margin-inline:auto}
.cta-band--center .cta-band__text{margin-inline:auto}

/* ---------- About ---------- */
.stats{display:grid;gap:var(--s5);margin-top:var(--s8)}
.stats .card{text-align:center}
.stats .stat__value{font-size:40px}
@media (min-width:600px){.stats{grid-template-columns:repeat(3,1fr)}}

.split{display:grid;gap:36px;align-items:center}
.split__media{order:-1}
.split__media .ph{height:clamp(280px,70vw,440px)}
.split .lead{margin-top:var(--s5)}
.split .prose{margin-top:var(--s4)}
@media (min-width:960px){.split{grid-template-columns:1fr 1fr;gap:72px}.split__media{order:0}}

.ticks{list-style:none;padding:0;margin-top:26px;display:flex;flex-direction:column;gap:13px}
.ticks li{display:flex;gap:10px;font-size:var(--fs-md);font-weight:600}
.ticks .icon{color:var(--brand)}

.cards{display:grid;gap:var(--s5);padding-bottom:var(--sec)}
@media (min-width:768px){.cards{grid-template-columns:repeat(3,1fr)}}
.cards .ico{margin-bottom:var(--s4)}

/* ---------- Timelines (how it works steps, gallery months) ---------- */
.timeline{position:relative;list-style:none}
.timeline::before{content:"";position:absolute;left:calc(var(--pad) + 19px);top:12px;bottom:12px;width:2px;background:var(--line)}
.timeline__item{position:relative;display:grid;grid-template-columns:40px minmax(0,1fr);gap:var(--s4);align-items:start;margin-bottom:var(--s6)}
.timeline__dot{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:800;font-size:15px;color:var(--white);background:var(--brand);z-index:1}
.timeline__dot--end{background:var(--ink)}
@media (min-width:768px){
  .timeline::before{left:calc(var(--pad) + 21px)}
  .timeline__item{grid-template-columns:44px minmax(0,1fr);gap:22px;margin-bottom:26px}
  .timeline__dot{width:44px;height:44px;font-size:16px}
}

/* ---------- FAQ ---------- */
.faq{border:1px solid var(--line);border-radius:var(--radius-lg);padding:4px 18px;margin-bottom:12px;background:var(--white)}
.faq summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:700;font-size:16px;display:flex;justify-content:space-between;align-items:center;gap:var(--s4)}
.faq summary::-webkit-details-marker{display:none}
.faq summary .icon{color:var(--brand);transition:transform .2s ease}
.faq[open] summary .icon{transform:rotate(180deg)}
.faq p{padding-bottom:18px;font-size:var(--fs-md);line-height:1.6;color:var(--text-muted)}
@media (min-width:768px){.faq summary{font-size:17px}}

/* ---------- Gallery ---------- */
.month-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.month-head .disp{font-size:22px}
.gal{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s3);margin-top:var(--s4)}
.gal figure{position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--surface-muted);aspect-ratio:1}
.gal img{width:100%;height:100%;object-fit:cover}
.gal figcaption{position:absolute;inset:auto 0 0;padding:28px 12px 10px;font-size:var(--fs-xs);font-weight:600;color:var(--white);background:linear-gradient(transparent,rgba(17,19,15,.75))}
@media (min-width:600px){.gal{grid-template-columns:repeat(3,minmax(0,1fr))}}

/* ---------- Book a consultation ---------- */
.book{display:grid;gap:var(--s8);align-items:start}
.book .lead{margin-top:var(--s5)}
.perks{list-style:none;padding:0;margin-top:30px;display:flex;flex-direction:column;gap:18px}
.perks li{display:flex;gap:14px;align-items:flex-start}
.perks p:first-child{font-weight:800}
.perks p + p{font-size:14px;color:var(--text-muted);margin-top:2px}
.form-panel{background:var(--brand-wash);border:1px solid var(--line);border-radius:var(--radius-xl);padding:clamp(20px,5vw,40px)}
.form-panel__title{font-size:22px;font-weight:700;letter-spacing:-.015em;margin-bottom:6px}
.form-panel__text{margin-bottom:var(--s6);font-size:var(--fs-md);color:var(--text-muted)}
.form-panel .check{margin:4px 0 var(--s6)}
.form-done{text-align:center;padding:var(--s7) var(--s2)}
.form-done .medal{margin:0 auto var(--s4)}
@media (min-width:960px){.book{grid-template-columns:.85fr 1.15fr;gap:64px}}

/* ---------- Simple content pages (privacy, cookies, terms, 404) ---------- */
.page-narrow{max-width:760px}
.not-found{text-align:center}
.not-found .lead{margin:var(--s5) auto 0;max-width:30em}
.not-found .cta-row{justify-content:center}

/* ---------- Packages ---------- */
.packages{display:grid;grid-template-columns:minmax(0,1fr);gap:var(--s5);align-items:stretch}
@media (min-width:768px){.packages{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1100px){.packages{grid-template-columns:repeat(3,minmax(0,1fr))}}
.package{position:relative;display:flex;flex-direction:column;gap:var(--s4);background:var(--white);border:1px solid var(--line);border-radius:var(--radius-xl);padding:var(--s6)}
.package--featured{border:2px solid var(--brand);box-shadow:var(--shadow-md)}
.package__badge{position:absolute;top:-13px;left:var(--s6);background:var(--brand);color:var(--white);font-size:var(--fs-xs);font-weight:800;padding:5px 10px;border-radius:var(--radius)}
.package__name{font-size:24px;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
.package__tagline{margin-top:4px;color:var(--text-muted);font-weight:600}
.package__price{display:flex;align-items:baseline;gap:6px;flex-wrap:wrap}
.package__amount{font-family:var(--font-display);font-weight:800;font-size:38px;line-height:1;color:var(--brand)}
.package__per{color:var(--text-muted);font-weight:600}
.package__summary{color:var(--text-muted)}
.package__features{display:grid;gap:10px;padding-top:var(--s4);border-top:1px solid var(--line-faint)}
.package__features li{display:flex;gap:10px;align-items:flex-start;font-weight:600;color:var(--ink)}
.package__features .icon{color:var(--brand);flex-shrink:0;margin-top:2px}
.package__cta{margin-top:auto}

/* ---------- Testimonials ---------- */
.testimonials{display:grid;gap:var(--s5);margin-top:var(--s7)}
@media (min-width:768px){.testimonials{grid-template-columns:repeat(3,minmax(0,1fr))}}
.testimonial{margin:0;display:flex;flex-direction:column;gap:var(--s3);padding:var(--s6);border-radius:var(--radius-xl);background:var(--white);border:1px solid var(--line)}
.testimonial blockquote{margin:0;font-size:17px;line-height:1.6;color:var(--ink);flex:1}
.testimonial figcaption{font-size:14px;color:var(--text-muted)}
.testimonial figcaption b{color:var(--ink)}
.testimonial .stars{margin:0}
.stars{color:#d97706;letter-spacing:2px}

/* ---------- Articles ---------- */
.article-list{display:grid;gap:var(--s5)}
@media (min-width:768px){.article-list{grid-template-columns:repeat(2,minmax(0,1fr))}.article-list--3,.article-list:not(.article-list--3){grid-template-columns:repeat(3,minmax(0,1fr))}.article-card--lead{grid-column:1 / -1;flex-direction:row}.article-card--lead .article-card__img{flex:0 0 55%;aspect-ratio:auto;min-height:320px}}
.article-card{display:flex;flex-direction:column;overflow:hidden;border-radius:var(--radius-xl);background:var(--white);border:1px solid var(--line);color:inherit;transition:transform .3s var(--ease-out),box-shadow .3s var(--ease),border-color var(--dur) var(--ease)}
.article-card:hover{box-shadow:var(--shadow-sm);border-color:var(--outline);color:inherit}
.article-card__img{display:grid;place-items:center;aspect-ratio:16/9;background:var(--brand-wash);color:var(--brand);overflow:hidden}
.article-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease-out)}
.article-card:hover .article-card__img img{transform:scale(1.04)}
.article-card__body{display:flex;flex-direction:column;gap:8px;padding:var(--s5) var(--s6) var(--s6)}
.article-card--lead .article-card__body{justify-content:center}
.article-card__title{font-family:var(--font-display);font-weight:700;letter-spacing:-.015em;font-size:20px;line-height:1.25;color:var(--ink)}
.article-card--lead .article-card__title{font-size:clamp(22px,3vw,30px)}
.article-card__excerpt{color:var(--text-muted);line-height:1.55}
.article-card .link-icon{color:var(--brand);margin-top:auto}
.article__title{margin-top:var(--s4)}
.article__cover{width:100%;max-height:440px;object-fit:cover;border-radius:var(--radius-xl);margin:var(--s6) 0}
.article__body{font-size:17px;line-height:1.75;color:var(--text-on-tint);margin-top:var(--s6)}
.article__body h2{font-size:24px}
.article__body h3{font-size:19px}
.article__body blockquote{margin:var(--s5) 0;padding:var(--s4) var(--s5);border-left:4px solid var(--brand);background:var(--brand-wash);border-radius:0 var(--radius-md) var(--radius-md) 0;font-style:italic}
.article__body blockquote p{margin:0}
.article__body ul,.article__body ol{padding-left:1.3em}
.article__cta{margin-top:var(--s8);display:flex;flex-direction:column;gap:var(--s3);align-items:flex-start}