/* sourcingai.co.uk — clean marketing page. Rules and whitespace, strong type, one black action. */
html { scroll-padding-top: 88px; }
.site { background: var(--cream); }

/* Header */
.s-head { position: sticky; top: 0; z-index: 40; background: rgb(var(--paper-rgb) / .92); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; transition: border-color var(--t-med); }
.s-head.is-scrolled { border-bottom-color: var(--linen); }
.s-head-in { display: flex; align-items: center; gap: clamp(16px, 3vw, 40px); height: 76px; }
.s-nav { display: flex; gap: 28px; margin-left: auto; }
.s-nav a { color: var(--black); font-weight: 700; font-size: .92rem; text-decoration: none; }
.s-nav a:hover { color: var(--signal-ink); }
@media (max-width: 980px) { .s-nav { display: none; } .s-head .btn { margin-left: auto; } }
@media (max-width: 460px) { .s-head .btn { padding-inline: 12px; font-size: .8rem; } }

/* Reveal */
.can-reveal .reveal { opacity: 0; transform: translateY(12px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); transition-delay: calc(var(--i, 0) * 60ms); }
.can-reveal .reveal.is-in { opacity: 1; transform: none; }

/* Type */
.s-h2 { font-size: clamp(1.9rem, 1.3rem + 2vw, 3rem); font-weight: 600; letter-spacing: -.03em; line-height: 1.08; max-width: 22ch; margin: 14px 0 clamp(28px, 4vw, 48px); }
.soft { color: var(--g-400); }
.accent { color: var(--signal-ink); }
.s-lead { font-size: clamp(1.08rem, 1rem + .35vw, 1.25rem); line-height: 1.6; color: var(--g-200); max-width: 46ch; }
.s-intro { font-size: 1.08rem; line-height: 1.65; color: var(--g-200); max-width: 58ch; margin-bottom: 32px; }
.s-cap { font-size: .8rem; font-style: italic; color: var(--g-300); font-weight: 600; margin-top: 12px; }
.s-n { font-family: var(--font-display); font-weight: 700; color: var(--signal-ink); font-size: .95rem; }

/* Hero */
.s-hero { padding-block: clamp(36px, 5vw, 72px) clamp(40px, 6vw, 72px); }
.s-hero-grid { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: clamp(24px, 5vw, 72px); align-items: center; }
.s-hero-copy { display: grid; gap: 22px; justify-items: start; }
.s-hero .display { font-size: clamp(2.6rem, 1.3rem + 3vw, 4.4rem); max-width: 14ch; }
.s-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 26px; }
.s-note { color: var(--g-200); font-weight: 600; }
.s-note a { color: var(--black); font-weight: 800; text-decoration-color: var(--signal); text-underline-offset: 4px; }
.s-hero-map { margin: 0; }
.s-hero-map .s-cap { text-align: center; }
@media (max-width: 980px) { .s-hero-grid { grid-template-columns: 1fr; } .s-hero-map { max-width: 620px; width: 100%; justify-self: center; } }
@media (max-width: 520px) { .s-cta .btn-lg { width: 100%; justify-content: center; } }

/* Figures band */
.s-band { border-block: 1.5px solid var(--black); padding-block: clamp(28px, 4vw, 44px); background: var(--paper); }
.s-figures { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; margin: 0; }
.s-figures > div { border-left: 1px solid var(--taupe); padding-left: 18px; }
.s-figures dt { font-family: var(--font-display); font-weight: 600; font-size: clamp(2.2rem, 1.6rem + 2vw, 3.4rem); letter-spacing: -.04em; line-height: 1; color: var(--black); }
.s-figures dd { margin: 8px 0 0; font-weight: 700; color: var(--g-200); }
@media (max-width: 760px) { .s-figures { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 28px; } }

/* Sections */
.s-sec { padding-block: clamp(64px, 9vw, 128px); border-bottom: 1px solid var(--linen); }
.s-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 6vw, 96px); align-items: center; }
.s-split-top { align-items: start; }
@media (max-width: 900px) { .s-split { grid-template-columns: 1fr; } }

.s-cols { list-style: none; margin: 0; padding: 0; display: grid; gap: clamp(20px, 4vw, 56px); }
.s-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.s-cols li { border-top: 1.5px solid var(--black); padding-top: 20px; display: grid; gap: 10px; align-content: start; }
.s-cols h3 { font-size: 1.4rem; }
.s-cols p { color: var(--g-200); line-height: 1.6; }
@media (max-width: 760px) { .s-cols-3 { grid-template-columns: 1fr; } }

.s-outcomes { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: clamp(20px, 3vw, 40px); border-top: 1.5px solid var(--black); }
.s-outcomes li { display: flex; gap: 14px; align-items: flex-start; padding: 16px 0; border-bottom: 1px solid var(--linen); }
.s-outcomes .icon { color: var(--signal-ink); margin-top: 3px; }
.s-outcomes strong { display: block; font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; }
.s-outcomes li > span > span { display: block; color: var(--g-300); font-weight: 600; font-size: .88rem; }
@media (max-width: 900px) { .s-outcomes { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .s-outcomes { grid-template-columns: 1fr; } }

.s-receive { margin-top: clamp(40px, 5vw, 64px); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 24px; }
.s-receive h3 { font-size: 1.4rem; }
.s-ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.s-ticks li { display: flex; gap: 12px; font-size: 1.05rem; font-weight: 600; color: var(--g-200); }
.s-ticks .icon { color: var(--mint-ink); margin-top: 3px; }
@media (max-width: 760px) { .s-receive { grid-template-columns: 1fr; } }

.s-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); column-gap: clamp(20px, 3vw, 40px); border-top: 1.5px solid var(--black); }
.s-steps li { padding: 20px 0 26px; border-bottom: 1px solid var(--linen); display: grid; gap: 8px; align-content: start; }
.s-steps h3 { font-size: 1.25rem; }
.s-steps p { color: var(--g-200); line-height: 1.55; font-size: .95rem; }
@media (max-width: 900px) { .s-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .s-steps { grid-template-columns: 1fr; } }

.s-list { list-style: none; margin: 0; padding: 0; border-top: 1.5px solid var(--black); }
.s-list li { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--linen); }
.s-list li > .icon { margin-top: 2px; color: var(--black); }
.s-list li.is-gate > .icon { color: var(--amber-ink); }
.s-list li > span { display: grid; gap: 2px; }
.s-list strong { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; }
.s-list li > span > span { color: var(--g-200); }

/* Demo */
.s-demo { background: var(--paper); }
.s-preview { border-top: 1.5px solid var(--black); padding-top: 18px; }
.s-preview-k { font-weight: 800; font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; }
.s-preview-v { font-family: var(--font-display); font-weight: 600; font-size: clamp(3rem, 2.2rem + 3vw, 4.6rem); letter-spacing: -.045em; line-height: 1; margin: 10px 0 18px; }
.s-preview-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0 0 18px; }
.s-preview-stats div { border-left: 1px solid var(--taupe); padding-left: 12px; }
.s-preview-stats dt { font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.s-preview-stats dd { margin: 4px 0 0; font-family: var(--font-display); font-weight: 600; font-size: 1.6rem; }
.s-preview-q { list-style: none; margin: 0; padding: 0; }
.s-preview-q li { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--linen); font-weight: 600; }
.s-preview-q li .num { font-weight: 800; }
@media (max-width: 480px) { .s-preview-stats { grid-template-columns: repeat(2, 1fr); row-gap: 12px; } }

/* FAQ */
.s-faq { border-top: 1.5px solid var(--black); }
.s-faq details { border-bottom: 1px solid var(--linen); }
.s-faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 16px; align-items: center; padding: 20px 0; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
.s-faq summary::-webkit-details-marker { display: none; }
.s-faq summary .icon { transition: transform var(--t-med) var(--ease); flex: none; }
.s-faq details[open] summary .icon { transform: rotate(180deg); }
.s-faq p { padding: 0 0 22px; color: var(--g-200); line-height: 1.65; max-width: 60ch; }

/* Book */
.s-book { border-bottom: 0; }
.s-form { display: grid; gap: 6px; justify-items: start; }
.s-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 24px; width: 100%; }
.s-form .field { width: 100%; }
.s-form .btn { margin-top: 10px; }
.s-form-note { margin-top: 10px; font-weight: 700; color: var(--amber-ink); border-left: 3px solid var(--amber); padding-left: 12px; }
.s-done { display: grid; gap: 12px; border-top: 1.5px solid var(--black); padding-top: 20px; }
.s-done:focus { outline: none; }
@media (max-width: 560px) { .s-form-grid { grid-template-columns: 1fr; } .s-form .btn { width: 100%; justify-content: center; } }

/* Footer */
.s-foot { background: var(--black); color: var(--cream); padding-block: 48px; }
.s-foot .lockup, .s-foot .lockup-master, .s-foot .lockup-prop { color: var(--cream); }
.s-foot .lockup-ai { color: #E3A07A; }
.s-foot .lockup-div { background: var(--cream); }
.s-foot-in { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 24px; align-items: start; }
.s-foot-line { margin-top: 10px; color: #D9CAB3; font-weight: 600; }
.s-foot-nav { display: grid; gap: 10px; }
.s-foot-nav a { color: var(--cream); font-weight: 700; text-decoration: none; }
.s-foot-nav a:hover { color: #E3A07A; }
.s-foot-legal { color: #D9CAB3; font-size: .85rem; }
.s-foot :focus-visible { outline-color: var(--cream); }
@media (max-width: 760px) { .s-foot-in { grid-template-columns: 1fr; } }

/* Form extras */
.s-hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.s-privacy { font-size: .88rem; font-weight: 600; color: var(--g-200); margin: 4px 0 6px; }
.s-privacy a { color: var(--black); text-decoration-color: var(--signal); }
.s-note a { word-break: break-word; }