/* Homepage sections. */

/* Hero */
.hero { position: relative; padding: calc(var(--header-h) + clamp(40px, 6vw, 80px)) 0 clamp(56px, 7vw, 96px); overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(#ffffff07 1px, transparent 1px) 0 0 / 100% 56px, linear-gradient(90deg, #ffffff07 1px, transparent 1px) 0 0 / 56px 100%; mask-image: radial-gradient(ellipse 80% 70% at 60% 30%, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 80% 70% at 60% 30%, #000 30%, transparent 75%); pointer-events: none; }
.hero__glow { position: absolute; top: -20%; right: -10%; width: 70vw; height: 70vw; max-width: 1000px; max-height: 1000px; background: radial-gradient(circle, #ff6a1a26 0%, transparent 60%); pointer-events: none; }
.hero__grid { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: clamp(32px, 4vw, 64px); align-items: center; }
.hero h1 { font-size: clamp(2.4rem, 4.2vw, 4.1rem); }
.hero h1 > span { display: block; white-space: nowrap; }
.hero h1 em { font-style: normal; }
@media (max-width: 520px) { .hero h1 > span { white-space: normal; } }
.hero .lead { margin-top: 28px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero__proof { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 32px 0 0; padding: 0; list-style: none; color: var(--text-2); font-size: .9rem; font-weight: 550; }
.hero__proof li { display: inline-flex; align-items: center; gap: 8px; }
.hero__proof svg { width: 16px; height: 16px; fill: none; stroke: var(--green); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.hero__visual { scroll-margin-top: calc(var(--header-h) + 24px); }

@media (max-width: 1020px) {
    .hero__grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: clamp(2.4rem, 8vw, 4.1rem); }
}

/* Stack strip */
.stack-strip { border-block: 1px solid var(--line); background: var(--bg-2); }
.stack-strip__inner { display: flex; align-items: center; gap: 32px; padding: 22px 0; overflow-x: auto; scrollbar-width: none; }
.stack-strip__inner::-webkit-scrollbar { display: none; }
.stack-strip__label { flex: none; color: var(--muted); font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; }
.stack-strip ul { display: flex; gap: clamp(24px, 4vw, 56px); margin: 0; padding: 0; list-style: none; }
.stack-strip li { flex: none; color: var(--text-2); font-size: 1.02rem; font-weight: 700; letter-spacing: -.01em; white-space: nowrap; }

/* Problem */
.problem-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.problem-card { position: relative; padding: 32px 28px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(180deg, var(--panel), transparent); }
.problem-card__num { display: block; margin-bottom: 40px; color: var(--accent); font-family: var(--font-mono); font-size: .8rem; font-weight: 700; }
.problem-card h3 { margin-bottom: 12px; font-size: 1.35rem; }
.problem-card p { color: var(--text-2); }
@media (max-width: 860px) { .problem-grid { grid-template-columns: 1fr; } .problem-card__num { margin-bottom: 20px; } }

/* Pillars */
.pillar-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.pillar { position: relative; display: flex; flex-direction: column; gap: 14px; padding: 28px 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); text-decoration: none; overflow: hidden; transition: border-color .3s, transform .3s var(--ease), background .3s; }
.pillar::after { content: "→"; position: absolute; top: 24px; right: 24px; color: var(--muted); transition: color .3s, transform .3s var(--ease); }
.pillar:hover { border-color: #ff6a1a66; transform: translateY(-4px); background: linear-gradient(180deg, #ff6a1a10, transparent 60%), var(--panel); }
.pillar:hover::after { color: var(--accent); transform: translateX(4px); }
.pillar__icon { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 12px; background: var(--accent-soft); color: var(--accent); }
.pillar__icon svg { width: 30px; height: 30px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.pillar h3 { font-size: 1.25rem; }
.pillar p { color: var(--text-2); font-size: .94rem; flex: 1; }
.pillar__tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.pillar__tags li { padding: 4px 9px; border-radius: 6px; background: #ffffff08; color: var(--muted); font-family: var(--font-mono); font-size: .68rem; }
@media (max-width: 1100px) { .pillar-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .pillar-grid { grid-template-columns: 1fr; } }

/* Arena */
.section--arena { background: radial-gradient(900px 500px at 80% 10%, #f7d65b10, transparent 70%), var(--bg); }
.arena-intro { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 40px; align-items: end; margin-bottom: 40px; }
.arena-intro .section__head { margin-bottom: 0; }
@media (max-width: 900px) { .arena-intro { grid-template-columns: 1fr; } }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 0; padding: 0; list-style: none; counter-reset: step; }
.step { position: relative; padding: 28px 24px; border-top: 2px solid var(--line-2); }
.step::before { content: ""; position: absolute; top: -2px; left: 0; width: 0; height: 2px; background: var(--accent); transition: width 1.2s var(--ease) .2s; }
.step.is-visible::before { width: 100%; }
.step__num { display: grid; place-items: center; width: 40px; height: 40px; margin-bottom: 20px; border: 1px solid var(--line-2); border-radius: 50%; color: var(--accent); font-family: var(--font-mono); font-weight: 700; }
.step h3 { margin-bottom: 10px; font-size: 1.2rem; }
.step p { color: var(--text-2); font-size: .94rem; }
@media (max-width: 960px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* Integrations */
.integration-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.integration { display: flex; flex-direction: column; gap: 14px; padding: 28px 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.integration h3 { font-size: 1.35rem; }
.integration p { flex: 1; color: var(--text-2); font-size: .94rem; }
.integration__tag { align-self: flex-start; padding: 4px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-family: var(--font-mono); font-size: .68rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
.integration--machine { border-color: #ff6a1a44; background: linear-gradient(180deg, #ff6a1a0d, transparent 60%), var(--panel); }
@media (max-width: 960px) { .integration-grid { grid-template-columns: 1fr; } }

/* AI capabilities */
.capabilities { display: grid; gap: 14px; margin: 32px 0 20px; padding: 0; list-style: none; }
.capabilities li { display: grid; grid-template-columns: 88px 1fr; gap: 16px; align-items: start; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.capabilities strong { display: block; margin-bottom: 2px; }
.capabilities p { color: var(--text-2); font-size: .92rem; }
.cap { display: inline-grid; place-items: center; height: 28px; border-radius: 6px; font-family: var(--font-mono); font-size: .7rem; font-weight: 800; letter-spacing: .08em; }
.cap--read { background: #7cc4ff1f; color: var(--steel); }
.cap--analyze { background: #c79bff1f; color: #c79bff; }
.cap--write { background: #ff6a1a26; color: var(--accent); box-shadow: inset 0 0 0 1px #ff6a1a66; }
.fine-print { color: var(--muted); font-size: .88rem; }
#ai h2 em { font-style: normal; }