/* หน้าขายฟีเจอร์แบบ motion (ระแนง 3D /paramaticwall/ · งานกลึง /revolve/) — ใช้คู่กับ /assets/motion.js */
:root {
  --bg: #06120e; --bg2: #0a1b16; --card: #0e221c; --line: rgba(160, 255, 220, .12); --ink: #effcf7; --ink2: #b9d6cc; --mute: #84a79a;
  --mint: #3ee0a1; --mint-ink: #032016; --wood: #e3cf9f; --wood2: #b99b62; --hot: #ff4fa6; --amber: #ffd166;
  --head: "Kanit", "IBM Plex Sans Thai", system-ui, sans-serif; --body: "IBM Plex Sans Thai", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap: min(1180px, calc(100% - 40px)); --r: 20px;
  --ease: cubic-bezier(.2, .8, .2, 1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.7 var(--body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
h1, h2, h3 { font-family: var(--head); line-height: 1.15; margin: 0; text-wrap: balance; }
a { color: var(--mint); }
img, video, canvas { max-width: 100%; display: block; }
img { height: auto; }
.wrap { width: var(--wrap); margin: 0 auto; }
.skip { position: absolute; left: -999px; top: 8px; background: #fff; color: #000; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; border-radius: 6px; }

/* ปุ่ม */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 54px; padding: 0 26px; border-radius: 16px; font: 600 17px/1 var(--body); text-decoration: none; border: 2px solid transparent; cursor: pointer; transition: transform .2s var(--ease), box-shadow .2s, background .2s; white-space: nowrap; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(.98); }
.btn svg { width: 20px; height: 20px; flex: none; }
.btn-main { background: var(--mint); color: var(--mint-ink); box-shadow: 0 12px 36px rgba(62, 224, 161, .38); }
.btn-main:hover { box-shadow: 0 16px 44px rgba(62, 224, 161, .55); }
.btn-xl { min-height: 64px; padding: 0 34px; font-size: 20px; border-radius: 18px; }
.btn-line { border-color: rgba(255, 255, 255, .35); color: #fff; background: rgba(255, 255, 255, .04); backdrop-filter: blur(6px); }
.btn-line:hover { background: rgba(255, 255, 255, .1); }
.btn-main.glow { position: relative; isolation: isolate; }
.btn-main.glow::after { content: ""; position: absolute; inset: -4px; border-radius: inherit; background: var(--mint); filter: blur(18px); opacity: .45; z-index: -1; animation: glow 2.6s ease-in-out infinite; }
@keyframes glow { 50% { opacity: .15; } }

/* หัวเว็บ (เหมือนหน้าแรก) */
header.top { position: fixed; inset: 0 0 auto; z-index: 50; color: #fff; background: linear-gradient(180deg, rgba(6, 18, 14, .75), rgba(6, 18, 14, 0)); transition: background .3s, backdrop-filter .3s, box-shadow .3s; }
header.top.solid { background: rgba(6, 18, 14, .9); backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--line); }
header.top .wrap { display: flex; align-items: center; gap: 18px; min-height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font: 600 20px/1 var(--head); }
.logo img { width: 40px; height: 40px; object-fit: contain; }
.logo small { display: block; font: 400 12px/1.2 var(--body); color: #9fdcc2; margin-top: 3px; }
nav.main { display: flex; gap: 2px; margin-left: auto; }
nav.main a { color: #d7efe4; text-decoration: none; font-size: 15px; padding: 8px 12px; border-radius: 10px; white-space: nowrap; text-shadow: 0 1px 8px rgba(0, 0, 0, .6); }
nav.main a:hover, nav.main a[aria-current] { background: rgba(255, 255, 255, .08); color: #fff; }
nav.main a[aria-current] { color: var(--mint); }
.top .btn { min-height: 42px; padding: 0 18px; font-size: 15px; border-radius: 12px; }
.menu-btn { display: none; background: none; border: 0; color: #fff; padding: 8px; margin-left: auto; cursor: pointer; }
.menu-btn svg { width: 28px; height: 28px; }

/* HERO วิดีโอเต็มจอ */
.hero { position: relative; min-height: 100svh; display: grid; align-items: end; overflow: hidden; }
.hero video, .hero .poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 40%; transform: translateX(17%) scale(1.06); transition: opacity .6s; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6, 18, 14, .95) 0%, rgba(6, 18, 14, .78) 34%, rgba(6, 18, 14, .2) 58%, rgba(6, 18, 14, 0) 72%), linear-gradient(0deg, var(--bg) 0%, rgba(6, 18, 14, 0) 30%); }
.hero .wrap { position: relative; z-index: 1; padding: 140px 0 96px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 7px 15px; border-radius: 999px; background: rgba(62, 224, 161, .14); border: 1px solid rgba(62, 224, 161, .3); color: var(--mint); font-weight: 600; font-size: 14px; }
.eyebrow i { width: 8px; height: 8px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 12px var(--mint); animation: blink 1.6s infinite; }
@keyframes blink { 50% { opacity: .3; } }
.hero h1 { font-size: clamp(54px, 9vw, 128px); font-weight: 800; letter-spacing: -1px; margin: 18px 0 6px; line-height: 1.02; }
.hero h1 .grad { background: linear-gradient(100deg, #fff 0%, var(--wood) 45%, var(--mint) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; padding-bottom: .06em; display: inline-block; }
.hero h1 small { display: block; font-size: .3em; font-weight: 600; letter-spacing: 0; color: #e8f7f1; margin-top: 10px; }
.hero .lead { font-size: clamp(17px, 1.6vw, 20px); color: #cfe9df; max-width: 33em; margin: 18px 0 30px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.proof { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 26px; color: #bfe8d6; font-size: 15px; padding: 0; list-style: none; }
.proof li { display: inline-flex; align-items: center; gap: 8px; }
.proof svg { width: 18px; height: 18px; color: var(--mint); flex: none; }
.scroll-hint { position: absolute; left: 50%; bottom: 22px; z-index: 1; transform: translateX(-50%); color: #9fc7b8; font-size: 13px; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.scroll-hint i { width: 22px; height: 36px; border: 2px solid rgba(255, 255, 255, .4); border-radius: 12px; position: relative; }
.scroll-hint i::after { content: ""; position: absolute; left: 50%; top: 7px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--mint); animation: wheel 1.8s infinite; }
@keyframes wheel { 60% { transform: translateY(10px); opacity: 0; } 100% { opacity: 0; } }
/* ตัวหนังสือโผล่ทีละบรรทัดตอนโหลด */
.in { opacity: 0; transform: translateY(28px); animation: rise .9s var(--ease) forwards; animation-delay: calc(var(--d, 0) * 120ms + 150ms); }
@keyframes rise { to { opacity: 1; transform: none; } }

/* ตอบสั้น (AIO) */
.answer { position: relative; z-index: 2; margin-top: -40px; }
.answer .box { display: grid; grid-template-columns: 1.3fr 1fr; gap: 28px; padding: 30px 34px; border-radius: 24px; background: linear-gradient(135deg, rgba(62, 224, 161, .1), rgba(227, 207, 159, .06)); border: 1px solid var(--line); backdrop-filter: blur(10px); }
.answer h2 { font-size: 22px; color: var(--mint); margin-bottom: 8px; }
.answer p { margin: 0; color: var(--ink2); }
.answer p b { color: var(--ink); }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.stat { padding: 14px 16px; border-radius: 16px; background: rgba(0, 0, 0, .25); border: 1px solid var(--line); }
.stat b { display: block; font: 700 32px/1.1 var(--head); color: var(--wood); font-variant-numeric: tabular-nums; }
.stat span { font-size: 14px; color: var(--mute); }

/* ส่วนทั่วไป */
section.sec { padding: 110px 0; position: relative; }
.sec-head { max-width: 780px; margin: 0 auto 52px; text-align: center; }
.kicker { color: var(--mint); font-weight: 600; font-size: 14px; letter-spacing: 1.5px; text-transform: uppercase; }
.sec-head h2, h2.big { font-size: clamp(32px, 4.4vw, 56px); margin: 10px 0 16px; font-weight: 700; }
.sec-head p { color: var(--ink2); margin: 0; font-size: 18px; }
.rv { opacity: 0; transform: translateY(40px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: calc(var(--d, 0) * 80ms); }
.rv.on { opacity: 1; transform: none; }

/* scroll-scrub: ผนังประกอบตัวเอง */
.scrub { height: 320vh; position: relative; }
.scrub .stick { position: sticky; top: 0; height: 100vh; overflow: hidden; }
.scrub canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.scrub .shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6, 18, 14, .85) 0%, rgba(6, 18, 14, .2) 45%, rgba(6, 18, 14, 0) 60%), linear-gradient(0deg, var(--bg) 0%, transparent 18%), linear-gradient(180deg, var(--bg) 0%, transparent 14%); }
.scrub .beats { position: absolute; left: max(20px, calc((100% - 1180px) / 2)); top: 50%; transform: translateY(-50%); width: min(520px, 44%); }
.beat { position: absolute; top: 0; left: 0; right: 0; transform: translateY(-50%); opacity: 0; transition: opacity .5s, transform .6s var(--ease); }
.beat.on { opacity: 1; transform: translateY(calc(-50% - 10px)); }
.beat .n { font: 700 15px var(--head); color: var(--mint); letter-spacing: 2px; }
.beat h3 { font-size: clamp(30px, 3.8vw, 50px); margin: 8px 0 12px; }
.beat p { color: var(--ink2); margin: 0; font-size: 18px; }
.scrub .bar { position: absolute; left: max(20px, calc((100% - 1180px) / 2)); bottom: 48px; width: 220px; height: 4px; border-radius: 2px; background: rgba(255, 255, 255, .12); overflow: hidden; }
.scrub .bar i { display: block; height: 100%; width: 0; background: var(--mint); }

/* ความสามารถ */
.feats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feat { position: relative; padding: 24px; border-radius: var(--r); background: var(--card); border: 1px solid var(--line); overflow: hidden; transition: transform .35s var(--ease), border-color .3s; }
.feat::before { content: ""; position: absolute; inset: 0; background: radial-gradient(400px 200px at var(--mx, 50%) var(--my, 0%), rgba(62, 224, 161, .14), transparent 60%); opacity: 0; transition: opacity .3s; }
.feat:hover { transform: translateY(-4px); border-color: rgba(62, 224, 161, .35); }
.feat:hover::before { opacity: 1; }
.feat .ic { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; background: rgba(62, 224, 161, .12); color: var(--mint); margin-bottom: 14px; }
.feat .ic svg { width: 24px; height: 24px; }
.feat h3 { font-size: 19px; margin-bottom: 6px; position: relative; }
.feat p { margin: 0; color: var(--ink2); font-size: 15px; line-height: 1.6; position: relative; }
.feat.wide { grid-column: span 2; }
.feat.wide .opts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; position: relative; }
.opts span { padding: 6px 12px; border-radius: 999px; background: rgba(227, 207, 159, .1); border: 1px solid rgba(227, 207, 159, .25); color: var(--wood); font-size: 14px; }

/* วิธีใช้: ข้อความเลื่อน ภาพติดจอ */
.how { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; }
.how .steps { display: grid; gap: 0; }
.step { min-height: 72vh; display: flex; flex-direction: column; justify-content: center; padding: 20px 0; opacity: .35; transition: opacity .4s; }
.step.on { opacity: 1; }
.step .no { display: inline-grid; place-items: center; width: 52px; height: 52px; border-radius: 16px; background: rgba(62, 224, 161, .12); color: var(--mint); font: 700 24px var(--head); margin-bottom: 16px; transition: background .3s, color .3s; }
.step.on .no { background: var(--mint); color: var(--mint-ink); }
.step h3 { font-size: clamp(26px, 2.8vw, 36px); margin-bottom: 12px; }
.step p { color: var(--ink2); margin: 0 0 14px; }
.where { display: inline-flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 15px; color: var(--mute); }
.where b { background: rgba(62, 224, 161, .12); color: var(--mint); padding: 3px 10px; border-radius: 8px; font-weight: 600; }
.step .shot-m { display: none; }
.how .stage { position: sticky; top: 12vh; height: 76vh; display: flex; align-items: center; }
.frame { position: relative; width: 100%; aspect-ratio: 4 / 3; border-radius: 22px; overflow: hidden; background: #1d2421; box-shadow: 0 40px 100px rgba(0, 0, 0, .55), 0 0 0 1px rgba(255, 255, 255, .08); }
.frame img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center top; opacity: 0; transform: scale(1.06); transition: opacity .7s var(--ease), transform 1.2s var(--ease); }
.frame img.on { opacity: 1; transform: none; }
.frame .tag { position: absolute; left: 14px; bottom: 14px; z-index: 2; padding: 6px 12px; border-radius: 10px; background: rgba(0, 0, 0, .6); font-size: 13px; color: #d7efe4; }

/* จากจอสู่ผนัง */
.reel { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.clip { border-radius: var(--r); overflow: hidden; background: var(--card); border: 1px solid var(--line); }
.clip .v { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: #111; }
.clip video, .clip .v img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.clip .b { padding: 18px 20px 22px; }
.clip .b .n { color: var(--mint); font: 700 13px var(--head); letter-spacing: 1.5px; }
.clip h3 { font-size: 21px; margin: 4px 0 6px; }
.clip p { margin: 0; color: var(--ink2); font-size: 15px; }
.note { text-align: center; color: var(--mute); font-size: 14px; margin-top: 18px; }

/* วิดีโอเต็ม */
.film { max-width: 980px; margin: 0 auto; border-radius: 24px; overflow: hidden; box-shadow: 0 40px 100px rgba(0, 0, 0, .55), 0 0 0 1px rgba(255, 255, 255, .08); background: #000; }
.film video { width: 100%; aspect-ratio: 16 / 9; }

/* เหมาะกับงาน */
.uses { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.uses span { padding: 14px 22px; border-radius: 16px; background: var(--card); border: 1px solid var(--line); font: 500 18px var(--head); }
.uses span em { font-style: normal; color: var(--wood); }

/* ราคา */
.buy { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; padding: 48px; border-radius: 28px; background: radial-gradient(700px 400px at 100% 0%, rgba(62, 224, 161, .18), transparent 60%), linear-gradient(160deg, #0d2a21, #081812); border: 1px solid rgba(62, 224, 161, .25); }
.buy h2 { font-size: clamp(30px, 3.6vw, 46px); margin: 10px 0 14px; }
.buy p { color: var(--ink2); margin: 0 0 22px; }
.price { padding: 28px; border-radius: 22px; background: rgba(0, 0, 0, .3); border: 1px solid var(--line); }
.price .lab { color: var(--mute); font-size: 15px; }
.price .amt { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin: 6px 0 4px; }
.price .amt b { font: 800 52px/1 var(--head); color: #fff; }
.price .amt s { color: var(--mute); font-size: 20px; }
.price .until { color: var(--amber); font-weight: 600; font-size: 15px; min-height: 1.5em; }
.price ul { list-style: none; padding: 0; margin: 16px 0 22px; display: grid; gap: 8px; }
.price li { display: flex; gap: 10px; color: var(--ink2); font-size: 15px; }
.price li svg { width: 20px; height: 20px; color: var(--mint); flex: none; margin-top: 3px; }
.price .btn { width: 100%; }

/* คำถาม */
.faq { max-width: 860px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { border-radius: 16px; background: var(--card); border: 1px solid var(--line); padding: 4px 22px; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 0; font: 600 18px var(--head); display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--mint); font-size: 26px; line-height: 1; transition: transform .3s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 0 18px; color: var(--ink2); }

/* ปิดท้าย */
.final { position: relative; overflow: hidden; text-align: center; padding: 140px 0; }
.final video, .final .poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .35; }
.final::before { content: ""; position: absolute; inset: 0; background: radial-gradient(closest-side, rgba(6, 18, 14, .4), var(--bg)); z-index: 1; }
.final .wrap { position: relative; z-index: 2; }
.final h2 { font-size: clamp(36px, 5.4vw, 72px); font-weight: 800; margin-bottom: 14px; }
.final p { color: var(--ink2); font-size: 19px; margin: 0 0 32px; }
.final .cta { justify-content: center; }

footer.foot { border-top: 1px solid var(--line); padding: 40px 0 120px; color: var(--mute); font-size: 15px; }
footer.foot .wrap { display: flex; flex-wrap: wrap; gap: 14px 28px; justify-content: space-between; align-items: center; }
footer.foot nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
footer.foot a { color: var(--ink2); text-decoration: none; }
footer.foot a:hover { color: var(--mint); }

/* แถบปุ่มลอย (มือถือ + หลังเลื่อนผ่าน hero) */
.dock { position: fixed; right: 24px; bottom: 24px; z-index: 60; transform: translateY(160%); transition: transform .45s var(--ease); display: flex; gap: 10px; align-items: center; padding: 8px 8px 8px 18px; border-radius: 20px; background: rgba(10, 27, 22, .92); backdrop-filter: blur(14px); border: 1px solid rgba(62, 224, 161, .3); box-shadow: 0 20px 50px rgba(0, 0, 0, .5); width: max-content; max-width: calc(100% - 24px); }
.dock.on { transform: none; }
.dock span { font: 600 15px var(--head); color: #e5f6ef; }
.dock .btn { min-height: 48px; padding: 0 20px; font-size: 16px; border-radius: 14px; }

/* หน้าต่างวิดีโอ */
dialog.vid { padding: 0; border: 0; background: transparent; width: min(1100px, 94vw); }
dialog.vid::backdrop { background: rgba(0, 0, 0, .85); backdrop-filter: blur(6px); }
dialog.vid video { width: 100%; border-radius: 16px; aspect-ratio: 16 / 9; background: #000; }
dialog.vid button { position: absolute; top: -48px; right: 0; width: 44px; height: 44px; border-radius: 50%; border: 0; background: rgba(255, 255, 255, .15); color: #fff; font-size: 24px; cursor: pointer; }

@media (max-width: 1240px) {
  nav.main a.opt { display: none; }
}
@media (max-width: 1080px) {
  .feats { grid-template-columns: repeat(2, 1fr); }
  .reel { grid-template-columns: 1fr 1fr; }
  .reel .clip:last-child { grid-column: span 2; }
}
@media (max-width: 900px) {
  .menu-btn { display: block; }
  nav.main { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; padding: 10px 20px 18px; background: rgba(6, 18, 14, .97); border-bottom: 1px solid var(--line); }
  nav.main.open { display: flex; }
  nav.main a, nav.main a.opt { display: block; padding: 12px; font-size: 17px; }
  .hide-m { display: none !important; }
  .hero { align-items: end; }
  .hero::after { background: linear-gradient(0deg, var(--bg) 0%, rgba(6, 18, 14, .88) 42%, rgba(6, 18, 14, .2) 75%, rgba(6, 18, 14, .5) 100%); }
  .hero video, .hero .poster { object-position: 62% 30%; transform: none; }
  .hero .wrap { padding: 46vh 0 70px; }
  .scroll-hint { display: none; }
  .answer { margin-top: 0; }
  .answer .box { grid-template-columns: 1fr; padding: 24px; }
  section.sec { padding: 80px 0; }
  .scrub .shade { background: linear-gradient(0deg, var(--bg) 0%, rgba(6, 18, 14, .85) 34%, rgba(6, 18, 14, 0) 60%), linear-gradient(180deg, var(--bg) 0%, transparent 14%); }
  .scrub .beats { left: 20px; right: 20px; width: auto; top: auto; bottom: 90px; transform: none; height: 200px; }
  .beat { top: auto; bottom: 0; transform: translateY(20px); }
  .beat.on { transform: none; }
  .scrub .bar { bottom: 50px; left: 20px; }
  .how { grid-template-columns: 1fr; }
  .how .stage { display: none; }
  .step { min-height: 0; opacity: 1; padding: 0 0 48px; }
  .step .shot-m { display: block; margin-top: 18px; border-radius: 16px; overflow: hidden; border: 1px solid var(--line); }
  .reel, .feats { grid-template-columns: 1fr; }
  .reel .clip:last-child, .feat.wide { grid-column: auto; }
  .buy { grid-template-columns: 1fr; padding: 28px 22px; }
  .btn-xl { width: 100%; }
  .dock { right: 12px; left: 12px; bottom: 12px; width: auto; justify-content: center; padding: 8px; }
  .stat b { font-size: 26px; }
  .dock .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .in, .rv { opacity: 1 !important; transform: none !important; }
}