.cs {
    --cream: #f7f2e9;
    --ink: #1c1a17;
    --yellow: #ffd400;
    --cyan: #67e3f5;
    --muted: #4a443b;
    --line: #e3dccb;
    background: var(--cream);
    color: var(--ink);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
}
body { margin: 0; background: var(--cream); }
.cs * { box-sizing: border-box; }
.cs img, .cs video { max-width: 100%; display: block; }
.cs h1, .cs h2 { font-family: Charter, Georgia, "Times New Roman", serif; line-height: 1.08; margin: 0 0 14px; letter-spacing: -0.01em; }
.cs h1 { font-size: clamp(2.5rem, 5.2vw, 3.9rem); }
.cs h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); }
.cs h3 { margin: 6px 0 6px; font-size: 1.05rem; }
.cs p { margin: 0 0 14px; }
.cs a { color: inherit; }
.cs mark { background: var(--yellow); padding: 0 8px; border-radius: 3px; }
.cs section { max-width: 1060px; margin: 0 auto; padding: 72px 24px 0; }

/* sticky glass topbar */
.cs-top {
    position: sticky; top: 0; z-index: 50;
    display: flex; align-items: center; gap: 22px;
    padding: 12px 26px;
    background: rgba(247, 242, 233, 0.82);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-bottom: 1.5px solid var(--line);
}
.cs-brand { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 1.05rem; text-decoration: none; color: var(--ink); }
.cs-brand img { width: 26px; height: 26px; border-radius: 7px; }
.cs-nav { display: flex; gap: 18px; margin-left: auto; font-size: 0.93rem; }
.cs-nav a { text-decoration: none; color: var(--muted); font-weight: 600; }
.cs-nav a:hover { color: var(--ink); }
.cs .cs-cta-pill {
    background: var(--ink); color: #fff; text-decoration: none; font-weight: 700; font-size: 0.9rem;
    padding: 9px 18px; border-radius: 999px; box-shadow: 3px 3px 0 rgba(28,26,23,.25);
    transition: transform .15s ease;
}
.cs-cta-pill:hover { transform: translateY(-1px); }

/* hero */
.cs-hero {
    display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center;
    padding-top: 64px !important;
}
.cs-eyebrow {
    font-size: 12px; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase;
    color: #8a8378; margin-bottom: 12px;
}
.cs-sub { font-size: 1.08rem; color: var(--muted); max-width: 46ch; }
.sweep {
    background: linear-gradient(var(--yellow), var(--yellow)) no-repeat 0 0 / 0% 100%;
    padding: 0 8px; border-radius: 3px;
    animation: sweep 1.1s cubic-bezier(.7,0,.2,1) .4s forwards;
}
@keyframes sweep { to { background-size: 100% 100%; } }
.cs-cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 22px 0 16px; }
.cs .cs-btn-dark {
    background: var(--ink); color: #fff; text-decoration: none; font-weight: 700;
    padding: 13px 24px; border-radius: 999px; box-shadow: 4px 4px 0 rgba(28,26,23,.25);
    display: inline-block; transition: transform .15s ease;
}
.cs-btn-dark:hover { transform: translateY(-2px); }
.cs-btn-ghost {
    border: 2px solid var(--ink); color: var(--ink); text-decoration: none; font-weight: 700;
    padding: 11px 22px; border-radius: 999px; display: inline-block;
}
.cs-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; }
.cs-badges span {
    border: 1.5px solid var(--ink); border-radius: 999px; padding: 4px 12px;
    font-size: 11.5px; font-weight: 800; letter-spacing: 0.06em;
}
.cs-badges span:first-child { background: var(--cyan); }

.karaoke { font-size: 1.5rem; font-weight: 800; font-family: Charter, Georgia, serif; min-height: 2.2em; }
.kw { opacity: 0.28; transition: opacity .2s ease, background .2s ease; border-radius: 3px; padding: 0 2px; }
.kw.on { opacity: 1; background: var(--yellow); }

.cs-hero-media { position: relative; justify-self: center; }
.cs-phone {
    width: 300px; border: 3px solid var(--ink); border-radius: 38px; overflow: hidden;
    box-shadow: 10px 10px 0 var(--ink); background: #000;
    animation: rise .9s cubic-bezier(.2,.7,.2,1) both;
}
.cs-phone video { width: 100%; aspect-ratio: 9/16; object-fit: cover; }
@keyframes rise { from { transform: translateY(26px); opacity: 0; } to { transform: none; opacity: 1; } }
.cs-chip {
    position: absolute; top: 34px; left: -46px;
    background: #fff; border: 2px solid var(--ink); border-radius: 12px;
    font-size: 13px; font-weight: 700; padding: 8px 12px;
    box-shadow: 4px 4px 0 rgba(28,26,23,.8);
    animation: floaty 5s ease-in-out infinite;
}
@keyframes floaty { 0%,100% { transform: translateY(0) rotate(-2deg); } 50% { transform: translateY(-9px) rotate(-2deg); } }

/* marquee */
.cs-marquee {
    margin-top: 64px; border-top: 2px solid var(--ink); border-bottom: 2px solid var(--ink);
    background: var(--yellow); overflow: hidden; padding: 12px 0;
}
.cs-marquee-in { display: flex; width: max-content; animation: marq 26s linear infinite; }
.cs-marquee-in span { font-weight: 800; font-size: 1.02rem; letter-spacing: 0.08em; white-space: nowrap; }
@keyframes marq { to { transform: translateX(-50%); } }

/* real output */
.cs-real { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.cs-real p { color: var(--muted); }
.cs-real h2 { color: var(--ink); }
.cs-note { font-size: 0.88rem; border-left: 3px solid var(--yellow); padding-left: 12px; margin-top: 16px; }
.cs-frames { display: flex; gap: 18px; justify-content: center; }
.cs-frame {
    width: 46%; border: 2.5px solid var(--ink); border-radius: 16px;
    box-shadow: 7px 7px 0 rgba(28,26,23,.85);
    transition: transform .25s ease;
}
.tilt-l { transform: rotate(-2.5deg); }
.tilt-r { transform: rotate(2deg); }
.cs-frame:hover { transform: rotate(0) scale(1.03); }

/* styles */
.cs-sec-sub { color: var(--muted); margin-top: -6px; }
.cs-style-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; margin-top: 22px; }
.cs-style-card {
    border: 2px solid var(--ink); border-radius: 14px; padding: 26px 14px 14px;
    text-align: center; box-shadow: 5px 5px 0 rgba(28,26,23,.8); background: #fff;
}
.cs-style-sample { font-weight: 800; font-size: 1.02rem; margin: 0 0 16px; min-height: 2.4em; }
.cs-style-name { font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: #8a8378; margin: 0; }
.cs-style-card span { animation: wcycle 1.65s ease-in-out infinite; border-radius: 3px; padding: 0 3px; }
@keyframes wcycle { 0%,100% { background: transparent; color: inherit; } 50% { background: var(--yellow); } }
.st-word { background: var(--ink); color: #fff; }
.st-word .cs-style-name { color: #9a948a; }
.st-bubble span { animation-name: bcycle; }
@keyframes bcycle { 0%,100% { background: transparent; } 50% { background: #fff; box-shadow: 0 0 0 3px #fff; } }
.st-min span { animation-name: mcycle; font-family: Charter, Georgia, serif; font-weight: 600; }
@keyframes mcycle { 0%,100% { color: inherit; } 50% { color: #d97706; background: transparent; } }
.st-black { background: var(--ink); color: #fff; }
.st-black span { animation: none; }
.st-black .cs-style-name { color: #9a948a; }
.st-white span { animation: none; }
.cs-center { text-align: center; margin-top: 26px; }

/* content cards (toolkit / creators / guides) */
.cs-cards { display: grid; gap: 14px; margin-top: 22px; }
.cs-cards.c3 { grid-template-columns: repeat(3, 1fr); }
.cs-cards.c5 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.cs-card {
    background: #fff; border: 2px solid var(--ink); border-radius: 14px; padding: 18px 18px 16px;
    box-shadow: 5px 5px 0 rgba(28,26,23,.8);
}
.cs-card p { color: var(--muted); font-size: 0.95rem; margin: 0 0 8px; }
.cs-card p:last-child { margin-bottom: 0; }
.cs-card a { font-weight: 700; text-decoration: none; border-bottom: 2px solid var(--yellow); }
.cs-card a:hover { background: var(--yellow); }

/* steps */
.cs-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 20px; }
.cs-step {
    background: #fff; border: 2px solid var(--ink); border-radius: 16px; padding: 22px 20px;
    box-shadow: 5px 5px 0 rgba(28,26,23,.8);
}
.cs-step p { color: var(--muted); font-size: 0.95rem; margin: 0; }
.cs-step-n {
    font-family: Charter, Georgia, serif; font-size: 2rem; font-weight: 800;
    background: var(--yellow); border-radius: 10px; padding: 0 12px; display: inline-block;
}

/* faq */
.cs-faq-item {
    background: #fff; border: 2px solid var(--ink); border-radius: 12px;
    margin-bottom: 10px; box-shadow: 4px 4px 0 rgba(28,26,23,.7);
}
.cs-faq-item summary {
    cursor: pointer; font-weight: 700; padding: 14px 18px; list-style: none;
}
.cs-faq-item summary::after { content: "+"; float: right; font-size: 1.2rem; }
.cs-faq-item[open] summary::after { content: "-"; }
.cs-faq-item p { padding: 0 18px 14px; margin: 0; color: var(--muted); }

/* final */
.cs-final {
    margin-top: 72px; background: var(--ink); color: #fff; text-align: center;
    padding: 64px 24px !important; max-width: none !important;
}
.cs-final h2 { color: #fff; }
.cs .cs-btn-yellow {
    background: var(--yellow); color: var(--ink); font-weight: 800; text-decoration: none;
    padding: 14px 28px; border-radius: 999px; display: inline-block; margin-top: 10px;
    box-shadow: 4px 4px 0 rgba(255,212,0,.35); transition: transform .15s ease;
}
.cs-btn-yellow:hover { transform: translateY(-2px); }

/* footer */
.cs-foot { max-width: 1060px; margin: 0 auto; padding: 44px 24px 34px; font-size: 0.92rem; color: var(--muted); }
.cs-footgrid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 26px; }
.cs-footbrand { font-weight: 800; font-size: 1.05rem; color: var(--ink); margin-bottom: 8px; }
.cs-foot h4 { margin: 0 0 10px; color: var(--ink); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; }
.cs-foot a { display: block; color: var(--muted); text-decoration: none; padding: 3px 0; }
.cs-foot a:hover { color: var(--ink); }
.cs-footbase { border-top: 1.5px solid var(--line); margin-top: 26px; padding-top: 14px; font-size: 0.85rem; }

@media (max-width: 860px) {
    .cs-nav { display: none; }
    .cs-hero { grid-template-columns: 1fr; gap: 34px; padding-top: 44px !important; }
    .cs-hero-media { order: -1; }
    .cs-phone { width: 230px; }
    .cs-chip { left: -8px; top: 18px; font-size: 11.5px; }
    .cs-real { grid-template-columns: 1fr; }
    .cs-steps { grid-template-columns: 1fr; }
    .cs-cards.c3 { grid-template-columns: 1fr; }
    .cs-footgrid { grid-template-columns: 1fr; }
    .karaoke { font-size: 1.2rem; }
    .cs section { padding-top: 54px; }
}

@media (prefers-reduced-motion: reduce) {
    .cs *, .cs *::before, .cs *::after { animation-duration: 0.01s !important; animation-iteration-count: 1 !important; transition-duration: 0.01s !important; }
    .cs-marquee-in { animation: none; }
    .sweep { background: var(--yellow); }
}