/* แสนแรก — sales site */
:root {
  --paper: #F5F6FA;
  --white: #FFFFFF;
  --ink: #15172B;
  --ink-2: #4A4F6A;
  --ink-3: #8086A3;
  --line: #E2E4EE;
  --blue: #3A3DF0;
  --blue-ink: #2427B8;
  --blue-soft: #ECECFF;
  --coin: #FFBE2E;
  --coin-ink: #8A5A00;
  --night: #0F1024;
  --night-2: #1A1C38;
  --night-line: #2C2F55;
  --mint: #5BE3A8;

  --display: "Anuphan", "IBM Plex Sans Thai Looped", system-ui, sans-serif;
  --body: "IBM Plex Sans Thai Looped", "Anuphan", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;

  --r-lg: 28px;
  --r-md: 18px;
  --r-sm: 10px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 18px/1.7 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 6px; }

.nw { white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

.wrap { width: min(1160px, 100% - 32px); margin-inline: auto; }

.h2 {
  font: 700 clamp(34px, 5.2vw, 64px)/1.22 var(--display);
  letter-spacing: -.02em;
  margin: 0 0 18px;
  text-wrap: balance;
}
.lead { font-size: clamp(18px, 1.6vw, 21px); color: var(--ink-2); max-width: 40em; margin: 0 0 48px; }
h3 { font: 600 22px/1.4 var(--display); margin: 0 0 6px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 0 28px; border-radius: 999px; border: 0;
  font: 600 17px/1 var(--display); text-decoration: none;
  transition: transform .2s var(--ease), background-color .2s, box-shadow .2s;
}
.btn:active { transform: scale(.97); }
.btn-blue { background: var(--blue); color: #fff; box-shadow: 0 8px 24px -10px rgba(58, 61, 240, .7); }
.btn-blue:hover { background: var(--blue-ink); }
.btn-ghost { background: transparent; color: var(--blue); box-shadow: inset 0 0 0 1.5px currentColor; }
.btn-ghost:hover { background: var(--blue-soft); }
.btn-coin { background: var(--coin); color: var(--ink); }
.btn-coin:hover { background: #FFCE5C; }
.btn-sm { min-height: 38px; padding: 0 18px; font-size: 15px; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .55; cursor: wait; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(245, 246, 250, .78);
  backdrop-filter: saturate(1.6) blur(18px); -webkit-backdrop-filter: saturate(1.6) blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background-color .3s;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav-in { width: min(1160px, 100% - 32px); margin-inline: auto; height: 60px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font: 700 21px/1 var(--display); text-decoration: none; letter-spacing: -.01em; }
.brand-coin {
  width: 22px; height: 22px; border-radius: 7px; background: var(--blue); position: relative; flex: none;
}
.brand-coin::after { content: ""; position: absolute; inset: 5px; border-radius: 50%; background: var(--coin); }
.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a { text-decoration: none; font-size: 15px; color: var(--ink-2); transition: color .2s; }
.nav-links a:hover { color: var(--ink); }
@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav .btn { margin-left: auto; }
}

/* ---------- hero ---------- */
.hero { text-align: center; padding: clamp(56px, 9vw, 112px) 16px 40px; overflow: hidden; }
.hero-title {
  font: 700 clamp(46px, 8.6vw, 112px)/1.16 var(--display);
  letter-spacing: -.035em; margin: 0;
}
.hero-title .line { display: block; overflow: hidden; padding: .06em 0 .12em; }
.hero-title .line > span { display: inline-block; transform: translateY(110%); animation: rise 1s var(--ease) forwards; }
.hero-title .line:nth-child(2) > span { animation-delay: .12s; color: var(--blue); }
@keyframes rise { to { transform: none; } }
.hero-sub {
  font-size: clamp(18px, 2vw, 23px); color: var(--ink-2);
  max-width: 34em; margin: 22px auto 34px;
  opacity: 0; animation: fade .9s .45s var(--ease) forwards;
}
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; opacity: 0; animation: fade .9s .6s var(--ease) forwards; }
@keyframes fade { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

.stage {
  --s: .9;
  position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 22px;
  width: min(1100px, 100%); margin: 64px auto 0; text-align: left;
  transform: scale(var(--s)); transform-origin: 50% 0;
  opacity: 0; animation: fade 1s .8s var(--ease) forwards;
}
.term {
  background: var(--night); color: #E7E8FF; border-radius: var(--r-lg);
  box-shadow: 0 40px 80px -40px rgba(21, 23, 43, .55), 0 0 0 1px rgba(255, 255, 255, .04) inset;
  overflow: hidden; min-height: 420px; display: flex; flex-direction: column;
}
.term-bar { display: flex; align-items: center; gap: 8px; padding: 14px 18px; border-bottom: 1px solid var(--night-line); }
.term-bar i { width: 12px; height: 12px; border-radius: 50%; background: #3A3D63; }
.term-bar i:nth-child(1) { background: #FF6B6B; } .term-bar i:nth-child(2) { background: #FFC94D; } .term-bar i:nth-child(3) { background: #4FD18B; }
.term-title { margin-left: 10px; font: 400 13px/1 var(--mono); color: #8F93C2; }
.term-body { padding: 22px 24px; font: 400 15px/1.75 var(--mono); flex: 1; }
.term-body .t-prompt { color: #fff; }
.term-body .t-prompt::before { content: "> "; color: var(--coin); }
.term-body .t-th { font-family: var(--body); }
.term-body .t-say { color: #C9CBF5; font-family: var(--body); }
.term-body .t-say::before { content: "● "; color: #8E91FF; font-family: var(--mono); }
.term-body .t-tool { color: #9AA0CF; }
.term-body .t-tool::before { content: "✓ "; color: var(--mint); }
.term-body .t-done { color: var(--mint); font-family: var(--body); }
.term-body .t-line { margin: 0 0 6px; }
.caret { display: inline-block; width: 9px; height: 1.1em; background: var(--coin); vertical-align: -3px; margin-left: 2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.preview {
  border-radius: var(--r-lg); background: var(--white); border: 1px solid var(--line);
  box-shadow: 0 40px 80px -48px rgba(21, 23, 43, .45); overflow: hidden; position: relative;
  min-height: 420px;
}
.pv { position: absolute; inset: 0; padding: 22px; display: flex; flex-direction: column; gap: 12px; opacity: 0; transform: translateY(18px) scale(.98); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.pv.show { opacity: 1; transform: none; }
.pv-ghost { position: absolute; inset: 0; padding: 22px; display: flex; flex-direction: column; gap: 12px; transition: opacity .4s; }
.pv-ghost span { border-radius: 14px; background: linear-gradient(90deg, #EEF0F6 0%, #F7F8FB 50%, #EEF0F6 100%) 0 0 / 200% 100%; animation: shimmer 1.6s linear infinite; }
.pv-ghost span:nth-child(1) { height: 34%; } .pv-ghost span:nth-child(2) { height: 22%; } .pv-ghost span:nth-child(3) { height: 12%; width: 60%; }
.pv-ghost p { margin: auto 0 0; text-align: center; font-size: 14px; color: var(--ink-3); }
.preview:has(.pv.show) .pv-ghost { opacity: 0; }
@keyframes shimmer { to { background-position: -200% 0; } }
.pv .bit { opacity: 0; transform: translateY(10px); transition: opacity .5s var(--ease), transform .5s var(--ease); }
.pv .bit.in { opacity: 1; transform: none; }
/* scene 0: cake shop page */
.pv-shop .shop-hero { border-radius: 14px; padding: 22px; background: linear-gradient(135deg, #FFE7C2, #FFC9B0); }
.pv-shop .shop-hero b { display: block; font: 700 24px/1.3 var(--display); color: #5B2A12; }
.pv-shop .shop-hero span { font-size: 14px; color: #7B4A2E; }
.pv-shop .menu { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.pv-shop .menu div { border-radius: 12px; background: #FFF6EC; padding: 10px; font-size: 13px; line-height: 1.4; color: #5B2A12; }
.pv-shop .menu div::before { content: ""; display: block; height: 44px; border-radius: 8px; margin-bottom: 8px; background: radial-gradient(circle at 50% 60%, #F5A97F 0 34%, #FFE1C9 35%); }
.pv-shop .menu i { display: block; font-style: normal; font-weight: 600; }
.pv-shop .line-btn { margin-top: auto; border-radius: 999px; background: #06C755; color: #fff; text-align: center; padding: 12px; font: 600 15px/1 var(--display); }
/* scene 1: clip script */
.pv-clip { align-items: center; justify-content: center; background: var(--paper); }
.phone { width: 200px; height: 360px; border-radius: 30px; background: #111; padding: 10px; box-shadow: 0 20px 40px -20px rgba(0,0,0,.5); }
.phone-in { height: 100%; border-radius: 22px; overflow: hidden; position: relative; background: linear-gradient(180deg, #2F5BFF, #0E1C66 70%); color: #fff; display: flex; flex-direction: column; justify-content: flex-end; padding: 16px; }
.phone-in .wave { position: absolute; top: 42%; left: 0; right: 0; height: 60px; display: flex; align-items: center; justify-content: center; gap: 4px; }
.phone-in .wave i { width: 5px; border-radius: 3px; background: rgba(255,255,255,.75); animation: wave 1s ease-in-out infinite; }
.phone-in .wave i:nth-child(odd) { animation-delay: -.4s; }
.phone-in .wave i:nth-child(3n) { animation-delay: -.7s; }
@keyframes wave { 0%, 100% { height: 10px; } 50% { height: 46px; } }
.phone-in .cap { font: 700 18px/1.35 var(--display); text-align: center; background: rgba(0,0,0,.35); border-radius: 10px; padding: 8px; }
.phone-in .cap em { font-style: normal; color: var(--coin); }
.pv-clip .clip-meta { font-size: 14px; color: var(--ink-2); text-align: center; }
/* scene 2: captions */
.pv-cap .cap-card { border-radius: 14px; border: 1px solid var(--line); padding: 14px 16px; font-size: 14px; line-height: 1.6; }
.pv-cap .cap-card b { display: block; font: 600 13px/1 var(--display); color: var(--ink-3); margin-bottom: 8px; }
.pv-cap .cap-card.fb b { color: #1877F2; } .pv-cap .cap-card.tt b { color: #111; } .pv-cap .cap-card.line b { color: #06C755; }

.scene-tabs { display: inline-flex; gap: 6px; margin-top: 26px; padding: 5px; border-radius: 999px; background: var(--white); border: 1px solid var(--line); }
.scene-tabs button { white-space: nowrap; border: 0; background: transparent; padding: 9px 18px; border-radius: 999px; font-size: 15px; color: var(--ink-2); position: relative; overflow: hidden; }
.scene-tabs button.on { background: var(--ink); color: #fff; }
.scene-tabs button.on::after { content: ""; position: absolute; left: 0; bottom: 0; height: 2px; background: var(--coin); width: var(--p, 0%); }

@media (max-width: 860px) {
  .stage { grid-template-columns: 1fr; --s: 1 !important; }
  .term { min-height: 250px; }
  .preview { min-height: 340px; }
  .term-body { font-size: 13.5px; padding: 18px; }
}
@media (max-width: 520px) {
  .scene-tabs button { padding: 8px 12px; font-size: 14px; }
}

/* ---------- lineup ---------- */
.lineup { padding: 120px 0 60px; }
.lineup-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; }
.tile {
  position: relative; display: block; text-decoration: none; overflow: hidden;
  border-radius: var(--r-lg); padding: 32px; background: var(--white);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.tile:hover { transform: translateY(-4px); box-shadow: 0 30px 60px -36px rgba(21, 23, 43, .35); }
.tile h3 { font-size: 30px; letter-spacing: -.01em; }
.tile p { margin: 0 0 14px; color: var(--ink-2); font-size: 17px; }
.tile-price { font: 600 19px/1 var(--display); color: var(--blue); }
.tile-price small { margin-left: 8px; font-size: 14px; font-weight: 500; color: var(--coin-ink); background: #FFF1CC; padding: 4px 10px; border-radius: 999px; }
.tile-ebook { min-height: 360px; display: flex; flex-direction: column; background: linear-gradient(180deg, var(--white) 55%, var(--blue-soft)); }
.mini-book {
  position: relative; align-self: center; margin-top: auto; width: 170px; aspect-ratio: 3 / 4.2; transform: translateY(34px) rotate(-4deg);
  border-radius: 4px 12px 12px 4px; background: linear-gradient(150deg, #4447FF, #2427B8); color: #fff;
  padding: 18px 16px; font: 700 16px/1.35 var(--display); box-shadow: 14px 18px 34px -12px rgba(36, 39, 184, .55), -10px 6px 0 -2px #fff, -10px 6px 0 0 var(--line);
  transition: transform .5s var(--ease);
}
.mini-book::before { content: ""; position: absolute; right: 14px; bottom: 16px; width: 34px; height: 34px; border-radius: 50%; background: var(--coin); }
.tile-ebook:hover .mini-book { transform: translateY(18px) rotate(0deg); }
.tile-office { background: #24223A; color: #fff; min-height: 360px; padding-bottom: 0; display: flex; flex-direction: column; }
.tile-office p { color: #C9C4E8; }
.tile-office .tile-price { color: var(--coin); }
.tile-office img { margin: 18px -32px 0; width: calc(100% + 64px); max-width: none; height: auto; flex: 1; min-height: 160px; object-fit: cover; object-position: 50% 60%; image-rendering: pixelated; }
@media (max-width: 860px) {
  .lineup { padding-top: 80px; }
  .lineup-grid { grid-template-columns: 1fr; }
}

/* ---------- ebook chapters ---------- */
.ebook { padding: 100px 0 80px; }
.ebook-head { max-width: 860px; }
.chapters { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: start; }
.chap-visual { position: sticky; top: 90px; height: calc(100vh - 120px); max-height: 680px; display: grid; place-items: center; perspective: 1400px; }
.book3d {
  --ry: -24deg; --rx: 6deg;
  position: relative; width: min(300px, 70%); aspect-ratio: 3 / 4.2;
  transform-style: preserve-3d; transform: rotateY(var(--ry)) rotateX(var(--rx));
  transition: transform .9s var(--ease);
  grid-area: 1 / 1;
}
.book-cover {
  position: absolute; inset: 0; border-radius: 4px 14px 14px 4px; overflow: hidden;
  background: linear-gradient(155deg, #4C4FFF 0%, #3A3DF0 45%, #2326A8 100%); color: #fff;
  padding: 28px 24px; display: flex; flex-direction: column; transform: translateZ(14px);
  box-shadow: inset 6px 0 10px -4px rgba(0,0,0,.35);
}
.bc-sun { position: absolute; right: -50px; bottom: -40px; width: 200px; height: 200px; border-radius: 50%; background: radial-gradient(circle, #FFD36B 0 45%, var(--coin) 46% 60%, transparent 61%); opacity: .95; }
.bc-kicker { font: 500 13px/1.3 var(--display); color: #C9CBFF; }
.bc-title { font: 700 30px/1.25 var(--display); letter-spacing: -.01em; margin-top: 12px; position: relative; }
.bc-brand { margin-top: auto; font: 700 16px/1 var(--display); position: relative; }
.book-pages { position: absolute; top: 6px; bottom: 6px; right: -1px; width: 28px; transform: rotateY(90deg) translateZ(-14px) translateX(14px); transform-origin: right; background: repeating-linear-gradient(90deg, #fff 0 2px, #E4E5EE 2px 3px); border-radius: 2px; }
.book-spine { position: absolute; top: 0; bottom: 0; left: 0; width: 28px; transform: rotateY(-90deg) translateZ(14px) translateX(-14px); transform-origin: left; background: #1E2090; }

.page-card {
  grid-area: 1 / 1; align-self: end; justify-self: end; width: min(330px, 86%); min-height: 190px;
  background: var(--white); border-radius: var(--r-md); padding: 22px; position: relative;
  box-shadow: 0 30px 60px -30px rgba(21, 23, 43, .35); transform: translate(10px, -10%);
}
.pg { position: absolute; inset: 22px; opacity: 0; transform: translateY(10px); transition: opacity .45s var(--ease), transform .45s var(--ease); pointer-events: none; }
.pg.on { opacity: 1; transform: none; position: relative; inset: auto; pointer-events: auto; }
.pg-check { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.pg-check li { display: flex; align-items: center; gap: 12px; font-size: 16px; }
.pg-check li::before { content: ""; width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--line); flex: none; transition: background-color .3s, border-color .3s; }
.pg.on .pg-check li::before { animation: tick .3s var(--ease) forwards; }
.pg.on .pg-check li:nth-child(1)::before { animation-delay: .2s; } .pg.on .pg-check li:nth-child(2)::before { animation-delay: .55s; }
.pg.on .pg-check li:nth-child(3)::before { animation-delay: .9s; } .pg.on .pg-check li:nth-child(4)::before { animation-delay: 1.25s; }
@keyframes tick { to { background: var(--mint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12.5l4 4 8-9' fill='none' stroke='%2315172B' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat; border-color: var(--mint); } }
.pg-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.pg-grid span { background: var(--blue-soft); color: var(--blue-ink); border-radius: 10px; padding: 10px 12px; font: 500 14px/1.3 var(--display); }
.pg-ideas { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.pg-ideas li { display: flex; align-items: center; gap: 10px; font-size: 16px; }
.pg-ideas li::before { content: ""; width: 14px; height: 14px; border-radius: 50%; background: var(--coin); box-shadow: inset 0 0 0 3px #FFD978; flex: none; }
.pg-formula { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.pg-formula span { background: var(--ink); color: #fff; border-radius: 8px; padding: 7px 10px; font: 500 14px/1 var(--display); }
.pg-formula b { color: var(--ink-3); }
.pg-note { font-size: 14px; color: var(--ink-2); margin: 14px 0 0; }
.pg-cards { position: relative; height: 140px; }
.pg-cards span { position: absolute; left: 0; right: 30px; padding: 14px 16px; border-radius: 12px; background: var(--paper); border: 1px solid var(--line); font: 500 15px/1.3 var(--display); transition: transform .5s var(--ease); }
.pg-cards span::after { content: "คัดลอก"; float: right; font-size: 12px; color: var(--blue); }
.pg-cards span:nth-child(1) { top: 0; } .pg-cards span:nth-child(2) { top: 46px; left: 14px; right: 16px; } .pg-cards span:nth-child(3) { top: 92px; left: 28px; right: 2px; background: var(--white); }

.chap-list { list-style: none; margin: 0; padding: 16vh 0 16vh; display: grid; gap: 26vh; }
.chap { position: relative; padding-left: 64px; opacity: .3; transition: opacity .5s var(--ease); }
.chap.on { opacity: 1; }
.chap-n { position: absolute; left: 0; top: 0; width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; font: 700 19px/1 var(--display); background: var(--white); border: 1.5px solid var(--line); transition: background-color .4s, color .4s, border-color .4s; }
.chap.on .chap-n { background: var(--blue); border-color: var(--blue); color: #fff; }
.chap h3 { font-size: clamp(24px, 2.6vw, 32px); line-height: 1.3; letter-spacing: -.01em; margin-bottom: 10px; }
.chap p { color: var(--ink-2); margin: 0; max-width: 28em; }
@media (max-width: 860px) {
  .chapters { grid-template-columns: 1fr; gap: 24px; }
  .chap-visual { position: relative; top: 0; height: 420px; }
  .chap-list { padding: 0; gap: 36px; }
  .chap { opacity: 1; }
  .page-card { transform: translate(0, 0); }
}

/* ---------- prompt lab ---------- */
.lab { padding: 100px 0; }
.lab-box { background: var(--white); border-radius: var(--r-lg); padding: clamp(20px, 3vw, 36px); border: 1px solid var(--line); }
.lab-tasks { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.lab-tasks button { border: 1.5px solid var(--line); background: transparent; border-radius: 999px; padding: 8px 18px; font-size: 15px; color: var(--ink-2); transition: border-color .2s, color .2s; }
.lab-tasks button.on { border-color: var(--ink); color: var(--ink); font-weight: 600; }
.lab-switch { position: relative; display: inline-grid; grid-template-columns: 1fr 1fr; background: var(--paper); border-radius: 999px; padding: 5px; margin-bottom: 26px; }
.lab-switch button { position: relative; z-index: 1; border: 0; background: transparent; padding: 10px 22px; border-radius: 999px; font: 600 15px/1 var(--display); color: var(--ink-2); transition: color .3s; }
.lab-switch button.on { color: #fff; }
.lab-thumb { position: absolute; top: 5px; bottom: 5px; left: 5px; width: calc(50% - 5px); border-radius: 999px; background: var(--blue); transition: transform .45s var(--ease), background-color .45s; }
.lab-switch[data-mode="weak"] .lab-thumb { background: var(--ink-3); transform: translateX(0); }
.lab-switch[data-mode="strong"] .lab-thumb { transform: translateX(100%); }
.lab-out { display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; }
.lab-prompt { background: var(--night); color: #ECEDFF; border-radius: var(--r-md); padding: 22px 24px; min-height: 200px; }
.lab-prompt p { margin: 8px 0 0; font-size: 17px; line-height: 1.75; }
.lab-result { background: var(--paper); border-radius: var(--r-md); padding: 22px 24px; display: flex; flex-direction: column; }
.lab-result p { margin: 8px 0 18px; }
.lab-label { font: 600 14px/1 var(--display); color: var(--ink-3); }
.lab-prompt .lab-label { color: #8F93C2; }
.lab-meter { margin-top: auto; height: 8px; border-radius: 4px; background: var(--line); overflow: hidden; }
.lab-meter span { display: block; height: 100%; width: 30%; border-radius: 4px; background: var(--ink-3); transition: width .7s var(--ease), background-color .5s; }
.lab-swap { animation: swap .45s var(--ease); }
@keyframes swap { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (max-width: 760px) { .lab-out { grid-template-columns: 1fr; } .lab-switch button { padding: 10px 14px; } }

/* ---------- pixel office ---------- */
.office { background: #1C1A2E; color: #fff; padding: 120px 0; border-radius: 48px 48px 0 0; }
.office .lead { color: #C9C4E8; }
.po-stage { position: relative; border-radius: var(--r-lg); overflow: hidden; background: #2B2840; box-shadow: 0 0 0 6px #2B2840, 0 0 0 7px #3E3A5C; }
#poCanvas { display: block; width: 100%; height: auto; image-rendering: pixelated; }
.po-ctrl { position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); display: flex; gap: 6px; padding: 6px; background: rgba(20, 18, 36, .82); border-radius: 14px; backdrop-filter: blur(6px); }
.po-ctrl button { border: 0; border-radius: 9px; padding: 9px 16px; background: transparent; color: #DCD7FF; font: 600 15px/1 var(--display); white-space: nowrap; }
.po-ctrl button.on { background: var(--coin); color: #1C1A2E; }
.po-feats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 56px; }
.po-feats div { border-top: 2px solid #3E3A5C; padding-top: 20px; }
.po-feats h3 { font-size: 20px; }
.po-feats p { color: #C9C4E8; font-size: 16px; margin: 0; }
.po-feats q { color: var(--coin); quotes: "“" "”"; }
.po-shot { margin: 72px 0 0; }
.po-shot img { border-radius: var(--r-md); image-rendering: pixelated; width: 100%; height: auto; box-shadow: 0 30px 60px -30px #000; }
.po-shot figcaption { margin-top: 14px; font-size: 15px; color: #9E98C4; }
@media (max-width: 960px) { .po-feats { grid-template-columns: 1fr 1fr; } }
@media (max-width: 860px) { .office { padding: 80px 0; border-radius: 32px 32px 0 0; } }
@media (max-width: 560px) {
  .po-feats { grid-template-columns: 1fr; gap: 0; } .po-feats div { padding: 18px 0; }
  .po-ctrl { position: static; transform: none; justify-content: center; border-radius: 0; }
  .po-ctrl button { padding: 9px 12px; font-size: 14px; }
}

/* ---------- price ---------- */
.price { padding: 120px 0 80px; }
.cfg { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 24px; align-items: start; }
.cfg-items { display: grid; gap: 14px; }
.item {
  display: grid; grid-template-columns: auto 1fr auto; gap: 18px; align-items: center;
  background: var(--white); border-radius: var(--r-md); padding: 24px; cursor: pointer;
  border: 2px solid transparent; transition: border-color .25s, box-shadow .25s;
}
.item input { position: absolute; opacity: 0; pointer-events: none; }
.item-box { width: 28px; height: 28px; border-radius: 9px; border: 2px solid var(--line); display: grid; place-items: center; transition: background-color .2s, border-color .2s; }
.item:has(input:checked) { border-color: var(--blue); box-shadow: 0 16px 40px -28px rgba(58, 61, 240, .7); }
.item:has(input:checked) .item-box { background: var(--blue); border-color: var(--blue); }
.item:has(input:checked) .item-box::after { content: ""; width: 12px; height: 7px; border: 3px solid #fff; border-top: 0; border-right: 0; transform: rotate(-45deg) translate(1px, -1px); }
.item:has(input:focus-visible) { outline: 3px solid var(--blue); outline-offset: 3px; }
.item-main b { display: block; font: 600 20px/1.4 var(--display); }
.item-main span { color: var(--ink-2); font-size: 15px; line-height: 1.55; display: block; }
.item-price { font: 700 24px/1 var(--display); text-align: right; white-space: nowrap; }
.item-price s { display: block; font-size: 15px; font-weight: 500; color: var(--ink-3); margin-bottom: 6px; }
.cfg-sum { position: sticky; top: 84px; background: var(--white); border-radius: var(--r-lg); padding: 28px; border: 1px solid var(--line); }
.sum-lines { list-style: none; margin: 0 0 12px; padding: 0; }
.sum-lines li { display: flex; justify-content: space-between; gap: 12px; padding: 7px 0; font-size: 16px; color: var(--ink-2); }
.sum-lines li.empty { color: var(--ink-3); }
.sum-save { min-height: 1.6em; margin: 0 0 10px; font-size: 15px; color: var(--coin-ink); font-weight: 600; }
.sum-total { display: flex; justify-content: space-between; align-items: baseline; border-top: 1px solid var(--line); padding-top: 16px; margin-bottom: 20px; }
.sum-total b { font: 700 40px/1 var(--display); letter-spacing: -.02em; }
.sum-pay { font-size: 14px; color: var(--ink-3); text-align: center; margin: 14px 0 0; line-height: 1.5; }
@media (max-width: 900px) { .cfg { grid-template-columns: 1fr; } .cfg-sum { position: static; } }
@media (max-width: 520px) { .item { padding: 18px; gap: 14px; } .item-main b { font-size: 18px; } .item-price { font-size: 20px; } }

/* ---------- steps ---------- */
.steps { padding: 60px 0 100px; }
.step-list { list-style: none; padding: 0; margin: 40px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; position: relative; }
.step-list li { position: relative; padding: 28px; background: var(--white); border-radius: var(--r-md); }
.step-n { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--ink); color: #fff; font: 700 20px/1 var(--display); margin-bottom: 18px; }
.step-list li:last-child .step-n { background: var(--coin); color: var(--ink); }
.step-list p { margin: 0; color: var(--ink-2); font-size: 16px; }
@media (max-width: 760px) { .step-list { grid-template-columns: 1fr; } }

/* ---------- proof ---------- */
.proof { padding: 40px 0 100px; }
.proof-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; }
.proof-list li { padding: 20px 0 20px 34px; border-top: 1px solid var(--line); position: relative; font-size: 18px; }
.proof-list li::before { content: ""; position: absolute; left: 0; top: 29px; width: 16px; height: 16px; border-radius: 50%; background: var(--blue); box-shadow: inset 0 0 0 4px var(--blue-soft); }
@media (max-width: 760px) { .proof-list { grid-template-columns: 1fr; } }

/* ---------- faq ---------- */
.faq { padding: 40px 0 120px; }
.faq-list { margin-top: 32px; max-width: 860px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 44px 22px 0; position: relative; font: 600 19px/1.45 var(--display); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 8px; top: 50%; width: 12px; height: 12px; margin-top: -9px; border-right: 2px solid var(--ink-2); border-bottom: 2px solid var(--ink-2); transform: rotate(45deg); transition: transform .3s var(--ease); }
.faq details[open] summary::after { transform: rotate(-135deg); margin-top: -3px; }
.faq details p { margin: 0 0 24px; color: var(--ink-2); max-width: 40em; }
.faq details[open] p { animation: swap .35s var(--ease); }
.faq a { color: var(--blue); }

/* ---------- final + footer ---------- */
.final { text-align: center; padding: 120px 16px; background: var(--blue); color: #fff; }
.final-title { font: 700 clamp(34px, 6vw, 76px)/1.2 var(--display); letter-spacing: -.03em; margin: 0 auto 36px; max-width: 14em; text-wrap: balance; }
.foot { background: var(--paper); padding: 56px 0 64px; }
.foot-in { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.foot-note { font-size: 14px; color: var(--ink-3); max-width: 36em; margin: 14px 0 0; line-height: 1.6; }
.foot-links { display: flex; flex-wrap: wrap; gap: 10px 22px; align-content: start; }
.foot-links a { font-size: 15px; color: var(--ink-2); text-decoration: none; }
.foot-links a:hover { color: var(--ink); text-decoration: underline; }

/* ---------- checkout dialog ---------- */
.checkout { border: 0; padding: 0; border-radius: var(--r-lg); width: min(460px, calc(100% - 24px)); max-height: calc(100dvh - 24px); background: var(--white); color: var(--ink); box-shadow: 0 40px 100px -20px rgba(15, 16, 36, .5); }
.checkout::backdrop { background: rgba(15, 16, 36, .55); backdrop-filter: blur(4px); }
.checkout[open] { animation: pop .4s var(--ease); }
@keyframes pop { from { opacity: 0; transform: translateY(20px) scale(.97); } to { opacity: 1; transform: none; } }
.co-in { padding: 28px; }
.co-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.co-head h2 { font: 700 28px/1.2 var(--display); margin: 0; }
.co-x { width: 36px; height: 36px; border-radius: 50%; border: 0; background: var(--paper); position: relative; }
.co-x::before, .co-x::after { content: ""; position: absolute; left: 11px; right: 11px; top: 17px; height: 2px; background: var(--ink-2); transform: rotate(45deg); }
.co-x::after { transform: rotate(-45deg); }
.co-lines { list-style: none; padding: 0; margin: 0; }
.co-lines li { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; font-size: 16px; color: var(--ink-2); }
.co-total { display: flex; justify-content: space-between; align-items: baseline; border-top: 1px solid var(--line); margin: 8px 0 20px; padding-top: 12px; }
.co-total b { font: 700 28px/1 var(--display); }
.field { display: block; margin-bottom: 14px; }
.field span { display: block; font-size: 15px; font-weight: 500; margin-bottom: 6px; }
.field input { width: 100%; height: 52px; border-radius: 14px; border: 1.5px solid var(--line); padding: 0 16px; font: 400 17px/1 var(--body); background: var(--paper); transition: border-color .2s, background-color .2s; }
.field input:focus { outline: none; border-color: var(--blue); background: #fff; }
.field input[aria-invalid="true"] { border-color: #D9443B; }
.agree { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; line-height: 1.55; margin: 4px 0 8px; cursor: pointer; }
.agree input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--blue); flex: none; }
.agree a { color: var(--blue); }
.co-err { min-height: 1.5em; color: #C9362D; font-size: 15px; margin: 4px 0 10px; }
.co-methods { display: flex; justify-content: center; gap: 6px; flex-wrap: wrap; margin-top: 16px; }
.co-methods span { font: 600 12px/1 var(--display); padding: 6px 10px; border-radius: 6px; border: 1px solid var(--line); color: var(--ink-2); }
.co-methods .m-pp { background: #113566; color: #fff; border-color: #113566; }
.co-fine { font-size: 13px; color: var(--ink-3); text-align: center; margin: 12px 0 0; line-height: 1.55; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .hero-title .line > span, .hero-sub, .hero-cta, .stage { opacity: 1; transform: none; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- simple pages (policy, thanks) ---------- */
.page { width: min(760px, 100% - 32px); margin: 0 auto; padding: 64px 0 96px; }
.page h1 { font: 700 clamp(34px, 5vw, 52px)/1.2 var(--display); letter-spacing: -.02em; margin: 0 0 16px; }
.page h2 { font: 700 26px/1.3 var(--display); margin: 56px 0 12px; scroll-margin-top: 80px; }
.page p, .page li { color: var(--ink-2); }
.page a:not(.btn) { color: var(--blue); }
.card { background: var(--white); border-radius: var(--r-lg); padding: clamp(22px, 4vw, 36px); border: 1px solid var(--line); }