.simple-header { position: sticky; top: 0; z-index: 100; background: #fffffff5; border-bottom: 1px solid #f0f0f0; backdrop-filter: blur(14px); }
.header-content { max-width: 1440px; margin: 0 auto; padding: 16px 36px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.simple-header .brand { display: inline-flex; align-items: center; gap: 8px; color: #111; }
.simple-header .brand span { font-family: Arial,sans-serif; font-size: 29px; font-weight: 750; letter-spacing: -1.4px; }
.try-button { display: inline-flex; justify-content: center; align-items: center; min-height: 50px; padding: 13px 28px; background: #086de8; color: #fff; border-radius: 999px; font-size: 16px; font-weight: 600; line-height: 1.4; text-decoration: none; white-space: nowrap; transition: transform .2s, background .2s, box-shadow .2s; }
.try-button:hover { background: #075bc1; transform: translateY(-2px); box-shadow: 0 8px 24px #086de828; }
.simple-header .try-button { min-height: 42px; padding: 10px 23px; }
.landing-page { color: #171717; background: #fff; font-family: Arial,sans-serif; font-size: 18px; line-height: 1.65; overflow-x: clip; }
.landing-page main { display: block; }
.lp-container { max-width: 1220px; margin-inline: auto; padding-inline: 38px; }
.landing-page h1, .landing-page h2 { font-family: 'Oswald',Arial,sans-serif; font-weight: 700; text-transform: uppercase; letter-spacing: -.045em; line-height: 1.13; text-wrap: balance; }
.landing-page h1 { font-size: clamp(48px,6.5vw,88px); margin: 0; }
.landing-page h2 { font-size: clamp(36px,4.6vw,60px); margin: 0 0 22px; }
.landing-page h3 { font-family: 'Roboto Condensed',Arial,sans-serif; font-weight: 700; font-size: 28px; line-height: 1.2; letter-spacing: -.015em; }
.landing-page p { margin: 0; }
.landing-hero { padding: 76px 0 0; margin-bottom: 106px; }
.hero-copy { max-width: 1030px; margin: 0 auto 42px; text-align: center; }
.hero-copy > p { max-width: 760px; margin: 27px auto; font-size: 21px; line-height: 1.65; color: #646464; }
.landing-hero figure { margin: 0; }
.landing-page figcaption { font-size: 12px; line-height: 1.55; color: #8a8a8a; text-align: center; padding: 16px 24px 0; grid-column: 1 / -1; }
.landing-video { position: relative; border-radius: 22px; overflow: hidden; background: #f2f2f2; min-width: 0; aspect-ratio: 16/10; }
.landing-video video { display: block; width: 100%; height: 100%; object-fit: cover; }
.video-toggle { position: absolute; bottom: 18px; right: 18px; border: 1px solid #ffffff80; border-radius: 30px; background: #fffffff0; color: #222; font-size: 13px; padding: 9px 16px; cursor: pointer; }
.text-visual { display: grid; grid-template-columns: .75fr 1.25fr; gap: 16px; }
.text-visual blockquote { margin: 0; background: #222; color: white; padding: 34px; border-radius: 22px; display: flex; flex-direction: column; justify-content: center; }
.text-visual blockquote > span { color: #c3c3c3; font-size: 13px; margin-bottom: 20px; }
.text-visual blockquote > p { font-size: 20px; line-height: 1.65; }
.prompt-lines { display: flex; flex-direction: column; gap: 9px; margin-top: 30px; }
.prompt-lines i { display: block; height: 4px; width: 80%; background: linear-gradient(90deg,#287cee,#845bea); border-radius: 8px; }
.prompt-lines i:nth-child(2) { width: 65%; opacity: .65; }
.prompt-lines i:nth-child(3) { width: 45%; opacity: .35; }
.comparison-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.photo-side, .motion-side { position: relative; min-width: 0; }
.photo-side img { width: 100%; height: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: 22px; }
.photo-side > span, .motion-side > span { position: absolute; top: 20px; left: 20px; background: white; border-radius: 30px; font-size: 13px; padding: 8px 18px; }
.product-visual { display: grid; grid-template-columns: .6fr 1.5fr .6fr; gap: 18px; align-items: center; }
.product-context { height: 330px; border-radius: 22px; overflow: hidden; }
.product-context img { width: 100%; height: 100%; object-fit: cover; }
.product-visual .landing-video { aspect-ratio: 4/3; }
.hero-grid { display: grid; grid-template-columns: 1.08fr 1fr; align-items: center; gap: 60px; }
.hero-grid .hero-copy { text-align: left; margin: 0; }
.hero-grid .hero-copy > p { font-size: 20px; margin: 26px 0 30px; }
.hero-grid h1 { font-size: clamp(48px,5.6vw,74px); }
.social-visual { position: relative; padding-left: 48px; }
.social-visual .portrait-video { aspect-ratio: 9/14; max-width: 330px; margin: 0 auto; border-radius: 26px; box-shadow: 0 18px 60px #17171714; }
.social-notes { position: absolute; top: 70px; left: 0; display: flex; flex-direction: column; align-items: flex-start; gap: 18px; pointer-events: none; }
.social-notes span { border: 1px solid #e3d6f1; border-radius: 30px; padding: 9px 18px; background: #ffffffed; font-size: 13px; box-shadow: 0 7px 24px #0000000b; }
.social-notes span:nth-child(2) { transform: translateX(25px); }
.character-visual { display: grid; grid-template-columns: .55fr 1fr; gap: 30px; align-items: center; }
.character-side { display: flex; flex-direction: column; gap: 4px; font-family: 'Oswald',sans-serif; font-size: clamp(36px,5.4vw,70px); line-height: 1.2; letter-spacing: -.04em; text-transform: uppercase; }
.character-side span:nth-child(2) { color: #287cee; }
.character-side span:nth-child(3) { color: #9a9a9a; }
.prompt-visual { position: relative; }
.prompt-visual > img { aspect-ratio: 4/5; width: 100%; height: auto; object-fit: cover; border-radius: 22px; }
.prompt-overlay { position: absolute; left: 22px; right: 22px; bottom: 78px; background: #fffffff0; backdrop-filter: blur(12px); border-radius: 18px; padding: 25px; }
.prompt-overlay p { font-family: 'Roboto Condensed',sans-serif; font-size: 30px; font-weight: 700; line-height: 1.25; }
.prompt-overlay p span { color: #287cee; }
.prompt-overlay > span { display: block; color: #747474; font-size: 13px; margin-top: 14px; }
.content-section { padding: 0 0 96px; }
.section-intro { max-width: 930px; margin: 0 auto 38px; text-align: center; }
.section-intro > p { max-width: 820px; margin: 0 auto; color: #696969; font-size: 18px; }
.info-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.info-card { border: 1px solid #d8c2e9; border-radius: 22px; padding: 28px; background: linear-gradient(135deg,#fff,#fdfbff); transition: transform .25s, box-shadow .25s; }
.info-card:hover { transform: translateY(-5px); box-shadow: 0 18px 35px -25px #8723e166; }
.section-number { display: block; color: #287cee; font-size: 13px; margin-bottom: 34px; }
.info-card h3 { margin-bottom: 16px; }
.info-card p, .editorial-list p, .process-list p, .storyboard-grid p { color: #696969; font-size: 17px; line-height: 1.7; }
.process-list { list-style: none; padding: 0; max-width: 970px; margin: 0 auto; }
.process-list li { display: grid; grid-template-columns: 80px 1fr; gap: 30px; padding: 28px 0; border-top: 1px solid #dedede; }
.process-number { font-family: 'Oswald',sans-serif; font-size: 40px; color: #287cee; line-height: 1.1; }
.process-list h3 { margin-bottom: 12px; }
.editorial-list { margin: 0 auto; max-width: 1000px; }
.editorial-list article { display: grid; grid-template-columns: 1fr 2fr; gap: 44px; border-top: 1px solid #ddd; padding: 30px 0; }
.checklist-panel { max-width: 1000px; margin: 0 auto; padding: 38px 44px; border-radius: 24px; background: #f7f9fc; }
.checklist-panel ul { list-style: none; margin: 0; padding: 0; }
.checklist-panel li { display: flex; gap: 20px; padding: 17px 0; border-bottom: 1px solid #e3e8ee; font-size: 18px; }
.checklist-panel li span { color: #287cee; }
.editor-note { margin-top: 26px !important; font-size: 15px; color: #7a7a7a; line-height: 1.75; }
.advice-comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.advice-comparison article { padding: 34px; background: #f7f7f7; border-radius: 22px; }
.advice-comparison article:last-child { background: #f4f8ff; border: 1px solid #bcd5fb; }
.comparison-marker { display: block; font-size: 34px; color: #999; line-height: 1; margin-bottom: 25px; }
.advice-comparison article:last-child .comparison-marker { color: #287cee; }
.advice-comparison h3 { margin-bottom: 18px; }
.advice-comparison p { color: #656565; font-size: 17px; }
.storyboard-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); list-style: none; gap: 0; padding: 0; background: #222; border-radius: 24px; overflow: hidden; }
.storyboard-grid li { padding: 32px; border-right: 1px solid #ffffff30; color: white; }
.storyboard-grid li:last-child { border-right: 0; }
.storyboard-top { display: flex; justify-content: space-between; font-size: 11px; letter-spacing: .08em; color: #bbb; margin-bottom: 46px; }
.storyboard-top span:last-child { color: #8abafa; letter-spacing: .2em; }
.storyboard-grid h3 { margin-bottom: 20px; }
.storyboard-grid p { color: #c4c4c4; }
.prompt-workbench { display: grid; grid-template-columns: 1.4fr .7fr; gap: 36px; align-items: center; }
.prompt-sample { background: #222; color: #fff; padding: 38px; border-radius: 22px; }
.prompt-sample > p { font-size: 20px; line-height: 1.7; }
.copy-example { font-size: 14px; padding: 12px 18px; border: 1px solid #ddd; border-radius: 999px; background: white; color: #222; cursor: pointer; margin-top: 28px; transition: border-color .2s, color .2s; }
.copy-example:hover { border-color: #287cee; color: #086de8; }
.prompt-explainer { list-style: none; padding: 0; }
.prompt-explainer li { color: #666; font-size: 17px; padding: 20px 0; border-bottom: 1px solid #ddd; }
.formula-list { list-style: none; padding: 0; }
.formula-list li { display: grid; grid-template-columns: 60px 220px 1fr; gap: 28px; align-items: baseline; padding: 28px 0; border-top: 1px solid #dedede; }
.formula-list li > span { color: #287cee; font-size: 15px; }
.formula-list p { color: #666; font-size: 17px; }
.example-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.example-grid article { padding: 28px; border: 1px solid #d8c2e9; border-radius: 22px; display: flex; flex-direction: column; align-items: flex-start; }
.example-grid h3 { margin-bottom: 20px; }
.example-grid p { font-size: 17px; color: #666; flex: 1; }
.related-pages { margin-bottom: 90px; }
.related-pages h2 { font-size: 38px; }
.related-pages .lp-container > div { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.related-pages a { display: block; padding: 25px 0; border-top: 1px solid #ddd; color: #171717; text-decoration: none; }
.related-pages a > span { font-family: 'Roboto Condensed',sans-serif; font-size: 25px; font-weight: 700; }
.related-pages a p { margin-top: 10px; font-size: 16px; color: #777; max-width: 480px; }
.related-pages a:hover > span { color: #086de8; }
.landing-faq { padding: 20px 0 70px; }
.landing-faq h2 { text-align: center; margin-bottom: 42px; }
.faq-list { max-width: 1040px; margin: 0 auto; }
.qa-item { border-top: 1px solid #bfbfbf; }
.qa-item:last-child { border-bottom: 1px solid #bfbfbf; }
.qa-trigger { display: flex; align-items: center; justify-content: space-between; gap: 28px; width: 100%; padding: 25px 0; text-align: left; cursor: pointer; font: inherit; color: inherit; background: none; border: 0; }
.qa-sign { font: 32px Arial,sans-serif; color: #171717; flex-shrink: 0; width: 28px; text-align: center; }
.qa-panel { display: grid; grid-template-rows: 0fr; visibility: hidden; transition: grid-template-rows .28s ease, visibility .28s; }
.qa-panel[aria-hidden="false"] { grid-template-rows: 1fr; visibility: visible; }
.qa-panel > div { min-height: 0; overflow: hidden; }
.qa-panel p { padding: 0 50px 28px 0; color: #686868; font-size: 17px; line-height: 1.75; }
.landing-final { padding: 65px 0 88px; text-align: center; background: radial-gradient(ellipse at 50% 100%,#edf4ff,transparent 65%); }
.landing-final img { margin: 0 auto 25px; }
.landing-final h2 { max-width: 900px; margin: 0 auto 24px; }
.landing-final p { color: #737373; max-width: 650px; margin: 0 auto 30px; font-size: 19px; }
.site-footer { background: #f7f8fa; border-top: 1px solid #e4e6e9; color: #171717; }
.footer-content { max-width: 1220px; padding: 46px 38px 24px; margin: 0 auto; }
.footer-brand { display: flex; align-items: center; gap: 8px; font: 700 29px Arial,sans-serif; letter-spacing: -1px; margin-bottom: 30px; }
.footer-links { display: grid; grid-template-columns: repeat(3,1fr); gap: 19px 32px; padding: 0; }
.footer-links a { font: 16px/1.5 Arial,sans-serif; text-decoration: none; color: #555; }
.footer-links a:hover, .footer-links a[aria-current="page"] { color: #086de8; }
.footer-bottom { display: flex; justify-content: space-between; border-top: 1px solid #e1e3e7; margin-top: 34px; padding-top: 22px; color: #858585; font: 13px/1.5 Arial,sans-serif; }
.landing-status { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); max-width: min(480px,calc(100vw - 40px)); border-radius: 15px; background: #222; color: white; z-index: 150; font-size: 14px; line-height: 1.5; padding: 14px 20px; box-shadow: 0 8px 30px #0002; }
.landing-status:empty { display: none; }
.landing-enter { animation: landing-in .65s both; }
@keyframes landing-in { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
@media (max-width: 900px) {
  .hero-grid { gap: 30px; }
  .info-grid { gap: 12px; }
  .info-card { padding: 23px; }
  .product-context { height: 260px; }
  .storyboard-grid li { padding: 25px; }
  .text-visual blockquote { padding: 26px; }
  .text-visual blockquote p { font-size: 17px; }
  .formula-list li { grid-template-columns: 38px 165px 1fr; gap: 20px; }
}
@media (max-width: 650px) {
  .header-content { padding: 13px 20px; }
  .simple-header .brand span { font-size: 26px; }
  .simple-header .brand img { width: 28px; height: 28px; }
  .simple-header .try-button { font-size: 14px; padding: 10px 17px; min-height: 40px; }
  .lp-container { padding-inline: 22px; }
  .landing-hero { padding-top: 42px; margin-bottom: 68px; }
  .landing-page h1 { font-size: 47px; }
  .landing-page h2 { font-size: 37px; }
  .landing-page h3 { font-size: 25px; }
  .hero-copy { margin-bottom: 30px; }
  .hero-copy > p, .hero-grid .hero-copy > p { font-size: 17px; line-height: 1.7; margin: 22px 0 25px; }
  .hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-grid .hero-copy { text-align: center; }
  .hero-grid h1 { font-size: 46px; }
  .text-visual { grid-template-columns: 1fr; gap: 14px; }
  .text-visual blockquote { padding: 26px; }
  .prompt-lines { margin-top: 22px; }
  .comparison-pair { gap: 12px; grid-template-columns: 1fr; }
  .product-visual { grid-template-columns: 1fr 1fr; gap: 12px; }
  .product-visual .landing-video { grid-column: 1 / -1; grid-row: 1; }
  .product-context { height: 190px; }
  .social-visual { padding-inline: 25px; }
  .social-visual .portrait-video { max-width: 280px; }
  .social-notes { left: 0; top: 50px; }
  .character-visual { grid-template-columns: 1fr; gap: 20px; }
  .character-side { flex-direction: row; flex-wrap: wrap; gap: 6px 16px; font-size: 28px; justify-content: center; }
  .prompt-visual > img { aspect-ratio: 1; }
  .prompt-overlay { left: 16px; right: 16px; bottom: 100px; padding: 20px; }
  .prompt-overlay p { font-size: 28px; }
  .landing-page figcaption { padding: 12px 4px 0; font-size: 11px; }
  .content-section { padding-bottom: 65px; }
  .section-intro { text-align: left; margin-bottom: 28px; }
  .section-intro > p { font-size: 16px; }
  .info-grid, .storyboard-grid, .example-grid, .advice-comparison, .prompt-workbench { grid-template-columns: 1fr; gap: 18px; }
  .section-number { margin-bottom: 24px; }
  .process-list li { grid-template-columns: 45px 1fr; gap: 18px; padding: 23px 0; }
  .process-number { font-size: 32px; }
  .process-list p, .info-card p, .editorial-list p, .storyboard-grid p { font-size: 16px; }
  .editorial-list article { grid-template-columns: 1fr; gap: 15px; padding: 24px 0; }
  .checklist-panel { padding: 23px; }
  .checklist-panel li { font-size: 16px; gap: 14px; }
  .advice-comparison article { padding: 26px; }
  .storyboard-grid { gap: 0; }
  .storyboard-grid li { border-right: 0; border-bottom: 1px solid #ffffff30; padding: 28px; }
  .storyboard-top { margin-bottom: 27px; }
  .prompt-sample { padding: 27px; }
  .prompt-sample > p { font-size: 18px; }
  .prompt-explainer { margin: 0; }
  .formula-list li { grid-template-columns: 30px 1fr; gap: 10px 14px; padding: 24px 0; }
  .formula-list li p { grid-column: 2; font-size: 16px; }
  .related-pages { margin-bottom: 45px; }
  .related-pages .lp-container > div { grid-template-columns: 1fr; gap: 0; }
  .related-pages h2 { font-size: 32px; }
  .landing-faq { padding-bottom: 40px; }
  .landing-faq h2 { text-align: left; margin-bottom: 28px; }
  .qa-trigger { font-size: 23px; line-height: 1.25; padding: 21px 0; gap: 15px; }
  .qa-panel p { font-size: 16px; padding-right: 0; }
  .landing-final { padding: 45px 0 65px; }
  .landing-final p { font-size: 17px; }
  .footer-content { padding: 35px 22px 24px; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 16px; }
  .footer-links a { font-size: 14px; }
  .footer-bottom { gap: 20px; font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .landing-page *, .simple-header *, .site-footer * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}