/* FILE: lp/monogatari-ai/assets/css/lp.css */
/* MONOGATARI AI LP 専用スタイル。コーポレートサイトのCSSは読み込まず、このファイルだけで完結させる */

/* ---------- tokens ---------- */
:root {
  --c-dark:        #121016;
  --c-dark-2:      #1C1922;
  --c-white:       #FFFFFF;
  --c-gray:        #F4F3F6;
  --c-ink:         #17161A;
  --c-ink-sub:     #55525C;
  --c-line:        #DDDAE3;
  --c-line-dark:   #34303D;
  --c-accent:      #5B3FB0;
  --c-accent-dk:   #4A3291;
  --c-accent-lt:   #C9BCF5;
  --c-on-dark:     #EDEBF2;
  --c-on-dark-sub: #A9A4B5;
  --c-error:       #C0392B;

  --f-serif: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --f-sans:  "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;

  --w-max: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --sec-y: clamp(72px, 10vw, 120px);
  --header-h: 64px;
  --radius: 6px;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px); /* 追従ヘッダー分のアンカー補正 */
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--c-white);
  color: var(--c-ink);
  font-family: var(--f-sans);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  overflow-wrap: break-word;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, p, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
h1, h2, h3 { word-break: auto-phrase; text-wrap: balance; }

.container { width: 100%; max-width: calc(var(--w-max) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.container--narrow { max-width: calc(760px + var(--gutter) * 2); }

.u-visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: 8px; top: -60px; z-index: 100; background: var(--c-white); color: var(--c-ink); padding: 8px 16px; }
.skip-link:focus { top: 8px; }
:focus-visible { outline: 2px solid var(--c-accent-lt); outline-offset: 3px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 10px 28px;
  border: 1px solid transparent; border-radius: 999px;
  font-family: var(--f-sans); font-size: 15px; font-weight: 700; line-height: 1.4;
  text-decoration: none; text-align: center;
  transition: background-color .2s, color .2s, border-color .2s;
  cursor: pointer;
}
.btn--primary { background: var(--c-accent); color: var(--c-white); }
.btn--primary:hover { background: var(--c-accent-dk); }
.btn--ghost-light { border-color: rgba(255,255,255,.45); color: var(--c-on-dark); }
.btn--ghost-light:hover { border-color: var(--c-white); background: rgba(255,255,255,.06); }
.btn--sm { min-height: 40px; padding: 6px 20px; font-size: 14px; }
.btn--lg { min-height: 56px; padding: 12px 40px; font-size: 16px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(18,16,22,.94);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-line-dark);
  color: var(--c-on-dark);
}
.site-header__inner {
  max-width: calc(var(--w-max) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter);
  min-height: var(--header-h);
  display: flex; align-items: center; gap: 24px;
}
.brand { display: inline-flex; align-items: baseline; gap: 8px; text-decoration: none; white-space: nowrap; }
.brand__name { font-family: var(--f-serif); font-size: 19px; font-weight: 700; letter-spacing: 0.08em; }
.brand__by { font-size: 11px; color: var(--c-on-dark-sub); letter-spacing: 0.04em; }
.global-nav { margin-left: auto; }
.global-nav ul { display: flex; gap: 4px 22px; flex-wrap: wrap; }
.global-nav a { font-size: 13px; text-decoration: none; color: var(--c-on-dark-sub); transition: color .2s; }
.global-nav a:hover { color: var(--c-white); }
.site-header .btn { flex-shrink: 0; }
@media (max-width: 1023px) {
  .global-nav { display: none; }              /* スマホ・タブレットは主要CTAのみ */
  .site-header .btn { margin-left: auto; }
}
@media (max-width: 400px) {
  .brand__by { display: none; }
}

/* ---------- common section ---------- */
.section { padding-block: var(--sec-y); }
.section--white { background: var(--c-white); }
.section--gray { background: var(--c-gray); }
.section--dark { background: var(--c-dark); color: var(--c-on-dark); }

.eyebrow, .section-index {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--f-sans); font-size: 12px; font-weight: 700; letter-spacing: 0.24em;
  color: var(--c-accent);
}
.section-index span {
  font-family: var(--f-serif); font-size: 15px; letter-spacing: 0.06em; color: var(--c-ink);
}
.section-index::after { content: ""; width: 48px; height: 1px; background: currentColor; opacity: .5; }
.eyebrow--light, .section-index--light, .section--dark .section-index { color: var(--c-accent-lt); }
.section--dark .section-index span { color: var(--c-white); }

.section-title {
  margin-top: 20px;
  font-family: var(--f-serif); font-weight: 700;
  font-size: clamp(26px, 3.4vw, 40px); line-height: 1.55; letter-spacing: 0.04em;
  max-width: 30em;
}
.section-lead { margin-top: 28px; max-width: 46em; color: var(--c-ink-sub); }
.section--dark .section-lead { color: var(--c-on-dark-sub); }
.sub-title {
  margin-top: 72px; margin-bottom: 28px;
  font-family: var(--f-serif); font-size: clamp(19px, 2vw, 22px); font-weight: 700; letter-spacing: 0.06em;
  display: flex; align-items: center; gap: 16px;
}
.sub-title::after { content: ""; flex: 1; height: 1px; background: var(--c-line); }
.note { margin-top: 28px; font-size: 13px; color: var(--c-ink-sub); }

/* ---------- hero（全幅の背景動画＋文字） ---------- */
.hero {
  --hero-dim: 0.55;             /* 動画の上に重ねる暗さ（0＝そのまま／1＝真っ黒）。文字が読みにくければ上げる */
  position: relative; isolation: isolate; overflow: hidden;
  min-height: clamp(560px, calc(100svh - var(--header-h)), 900px);
  display: flex; align-items: center;
  padding-block: clamp(72px, 10vw, 120px);
  background: var(--c-dark); color: var(--c-on-dark);
}
.hero__media { position: absolute; inset: 0; z-index: -1; overflow: hidden; background: var(--c-dark) center / cover no-repeat; }
/* 暗幕：単色の半透明レイヤーで動画の明度を下げる（グラデーションは使わない） */
.hero__media::after { content: ""; position: absolute; inset: 0; background: rgba(18, 16, 22, var(--hero-dim)); }
/* 16:9の動画を、画面の縦横比に関係なく隙間なく敷き詰める（cover） */
.hero__media { container-type: size; }
.hero__video {
  position: absolute; top: 50%; left: 50%;
  width: max(100cqw, 177.78cqh);     /* 横長の画面では横幅いっぱい、縦長の画面では高さいっぱい */
  height: max(100cqh, 56.25cqw);
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.hero__video iframe {
  position: absolute; inset: 0; width: 100%; height: 100%; border: 0;
  opacity: 0; transition: opacity 1.2s ease;   /* YouTubeの読み込み表示を隠し、再生が始まってから見せる */
}
.hero__video.is-ready iframe { opacity: 1; }
.hero__inner { position: relative; }
.hero__text { max-width: 880px; }
.hero__title {
  margin-top: 24px;
  font-family: var(--f-serif); font-weight: 700;
  font-size: clamp(32px, 5vw, 64px); line-height: 1.45; letter-spacing: 0.04em;
  color: var(--c-white);
  text-shadow: 0 2px 24px rgba(0,0,0,.35);
}
.hero__lead { margin-top: 28px; max-width: 40em; color: var(--c-on-dark); font-size: 15px; text-shadow: 0 1px 12px rgba(0,0,0,.4); }
.hero__actions { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 12px; }
.tag-list { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag-list li {
  padding: 4px 14px; border: 1px solid rgba(255,255,255,.3); border-radius: 999px;
  background: rgba(18,16,22,.35);
  font-size: 12px; color: var(--c-on-dark); letter-spacing: 0.04em;
}
@media (prefers-reduced-motion: reduce) { .hero__video { display: none; } }

/* ---------- 01 about ---------- */
.worry-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.worry {
  position: relative; padding: 28px 24px 28px 56px;
  background: var(--c-gray); border-radius: var(--radius);
  font-weight: 500; line-height: 1.75;
}
.worry::before {
  content: ""; position: absolute; left: 24px; top: 38px;
  width: 16px; height: 1px; background: var(--c-accent);
}
.way-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--c-line); }
.way { padding: 36px 32px 8px 0; display: flex; flex-direction: column; gap: 10px; }
.way + .way { padding-left: 32px; border-left: 1px solid var(--c-line); }
.way__en { font-size: 11px; font-weight: 700; letter-spacing: 0.24em; color: var(--c-accent); }
.way__title { font-family: var(--f-serif); font-size: clamp(24px, 2.6vw, 30px); font-weight: 700; letter-spacing: 0.08em; line-height: 1.4; }
.way__text { color: var(--c-ink-sub); font-size: 15px; }
@media (max-width: 1023px) {
  .worry-list, .way-list { grid-template-columns: minmax(0, 1fr); }
  .way, .way + .way { padding: 28px 0; border-left: 0; }
  .way + .way { border-top: 1px solid var(--c-line); }
}

/* ---------- 02 value ---------- */
.value-main {
  margin-top: 56px; padding: clamp(32px, 5vw, 56px);
  background: var(--c-dark); color: var(--c-on-dark); border-radius: var(--radius);
  display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 16px 56px; align-items: start;
}
.value-main__num { grid-column: 1 / -1; font-size: 12px; font-weight: 700; letter-spacing: 0.24em; color: var(--c-accent-lt); }
.value-main__title { font-family: var(--f-serif); font-size: clamp(24px, 3vw, 34px); line-height: 1.5; letter-spacing: 0.04em; color: var(--c-white); }
.value-main__text { color: var(--c-on-dark-sub); }
.value-list { margin-top: 16px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.value-card {
  padding: 32px 28px; background: var(--c-white); border-radius: var(--radius);
  display: flex; flex-direction: column; gap: 12px;
}
.value-card__num { font-size: 11px; font-weight: 700; letter-spacing: 0.24em; color: var(--c-accent); }
.value-card__title { font-family: var(--f-serif); font-size: 20px; line-height: 1.55; letter-spacing: 0.04em; }
.value-card__text { color: var(--c-ink-sub); font-size: 15px; }
@media (max-width: 1023px) {
  .value-main, .value-list { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- use cases ---------- */
.case-list { margin-top: 56px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.case-card { display: flex; flex-direction: column; background: var(--c-gray); border-radius: var(--radius); overflow: hidden; }
.case-card__thumb {
  aspect-ratio: 16 / 9; background: var(--c-dark-2) center / cover no-repeat;
  display: flex; align-items: center; justify-content: center;
}
.case-card__thumb span {
  font-family: var(--f-serif); font-size: 22px; letter-spacing: 0.3em; color: var(--c-on-dark-sub);
  padding-inline: 1em; border-inline: 1px solid var(--c-line-dark);
}
.case-card__body { padding: 28px 24px 32px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.case-card__cat { font-size: 12px; font-weight: 700; color: var(--c-accent); letter-spacing: 0.06em; }
.case-card__title { font-family: var(--f-serif); font-size: 20px; line-height: 1.55; letter-spacing: 0.04em; }
.case-card__text { color: var(--c-ink-sub); font-size: 15px; }
@media (max-width: 1023px) {
  .case-list { grid-template-columns: minmax(0, 1fr); max-width: 560px; }
}

/* ---------- 03 difference ---------- */
.compare-wrap { margin-top: 56px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.compare { width: 100%; min-width: 640px; border-collapse: collapse; font-size: 15px; }
.compare th, .compare td { padding: 20px 24px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--c-line-dark); }
.compare thead th { font-size: 13px; font-weight: 700; letter-spacing: 0.06em; color: var(--c-on-dark-sub); border-bottom-color: var(--c-on-dark-sub); }
.compare tbody th { width: 18%; font-weight: 500; color: var(--c-on-dark-sub); white-space: nowrap; }
.compare td { color: var(--c-on-dark-sub); width: 36%; }
.compare .compare__ours { color: var(--c-white); background: rgba(91,63,176,.16); }
.compare thead .compare__ours { color: var(--c-accent-lt); font-family: var(--f-serif); font-size: 16px; letter-spacing: 0.1em; }
.compare td.compare__ours { font-weight: 500; }
.point-list { margin-top: 56px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.point { padding: 36px 32px; border: 1px solid var(--c-line-dark); border-radius: var(--radius); display: flex; flex-direction: column; gap: 12px; }
.point__label { font-size: 11px; font-weight: 700; letter-spacing: 0.24em; color: var(--c-accent-lt); }
.point__title { font-family: var(--f-serif); font-size: clamp(20px, 2.2vw, 24px); line-height: 1.5; color: var(--c-white); letter-spacing: 0.04em; }
.point__text { color: var(--c-on-dark-sub); font-size: 15px; }
@media (max-width: 1023px) {
  .point-list { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 04 process ---------- */
.process-list { margin-top: 56px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 32px; }
.step { padding: 28px 0 32px; border-top: 1px solid var(--c-ink); display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 4px 20px; align-content: start; }
.step__num { grid-row: 1 / span 2; font-family: var(--f-serif); font-size: 32px; line-height: 1.1; color: var(--c-accent); }
.step__title { font-family: var(--f-serif); font-size: 19px; line-height: 1.5; letter-spacing: 0.04em; }
.step__text { color: var(--c-ink-sub); font-size: 15px; }
@media (max-width: 1023px) { .process-list { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 767px)  { .process-list { grid-template-columns: minmax(0, 1fr); } }
#process .note { padding: 16px 20px; background: var(--c-gray); border-radius: var(--radius); }

/* ---------- 05 price ---------- */
.plan {
  margin-top: 56px; background: var(--c-white); border-radius: var(--radius); overflow: hidden;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
}
.plan__head {
  padding: clamp(32px, 5vw, 56px); background: var(--c-dark); color: var(--c-on-dark);
  display: flex; flex-direction: column; align-items: flex-start; gap: 8px;
}
.plan__name { font-size: 12px; font-weight: 700; letter-spacing: 0.24em; color: var(--c-accent-lt); }
.plan__summary { font-family: var(--f-serif); font-size: 18px; color: var(--c-white); letter-spacing: 0.04em; }
.plan__price { margin-top: 12px; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px; color: var(--c-white); }
.plan__amount { font-family: var(--f-serif); font-size: clamp(56px, 7vw, 80px); line-height: 1; letter-spacing: 0.02em; }
.plan__unit { font-family: var(--f-serif); font-size: 22px; }
.plan__tax { font-size: 15px; color: var(--c-on-dark-sub); margin-left: 4px; }
.plan__per { font-size: 14px; color: var(--c-on-dark-sub); }
.plan__head .btn { margin-top: auto; }
.plan__head .plan__per { margin-bottom: 28px; }
.plan__body { padding: clamp(32px, 5vw, 56px); }
.plan__list-title { font-family: var(--f-serif); font-size: 18px; letter-spacing: 0.06em; margin-bottom: 16px; }
.check-list li { position: relative; padding: 14px 0 14px 32px; border-bottom: 1px solid var(--c-line); line-height: 1.7; }
.check-list li::before {
  content: ""; position: absolute; left: 4px; top: 22px;
  width: 12px; height: 7px; border-left: 2px solid var(--c-accent); border-bottom: 2px solid var(--c-accent);
  transform: rotate(-45deg);
}
@media (max-width: 1023px) { .plan { grid-template-columns: minmax(0, 1fr); } }

/* ---------- CTA band ---------- */
.cta-band { background: var(--c-dark); color: var(--c-on-dark); padding-block: var(--sec-y); text-align: center; border-top: 1px solid var(--c-line-dark); }
.cta-band__inner { display: flex; flex-direction: column; align-items: center; gap: 28px; }
.cta-band__title { font-family: var(--f-serif); font-size: clamp(24px, 3.2vw, 38px); line-height: 1.6; letter-spacing: 0.04em; color: var(--c-white); max-width: 22em; }
.cta-band__text { max-width: 36em; color: var(--c-on-dark-sub); }

/* ---------- company ---------- */
.company { margin-top: 56px; display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 40px 64px; align-items: start; }
.company__intro { display: flex; flex-direction: column; align-items: flex-start; gap: 24px; }
.company__logo { width: 200px; height: auto; }
.company__lead { color: var(--c-ink-sub); }
.company__lead a, .text-link { color: var(--c-accent); }
.text-link { font-size: 14px; font-weight: 500; }
.company__table { border-top: 1px solid var(--c-line); }
.company__table > div { display: grid; grid-template-columns: 9em minmax(0, 1fr); gap: 8px 24px; padding: 18px 0; border-bottom: 1px solid var(--c-line); }
.company__table dt { font-weight: 500; font-size: 14px; color: var(--c-ink-sub); }
.company__table dd { font-size: 15px; }
@media (max-width: 1023px) { .company { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 767px)  { .company__table > div { grid-template-columns: minmax(0, 1fr); gap: 2px; } }

/* ---------- footer ---------- */
.site-footer { background: var(--c-dark); color: var(--c-on-dark); padding-top: 64px; border-top: 1px solid var(--c-line-dark); }
.site-footer__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 32px; }
.site-footer__brand { display: flex; flex-direction: column; gap: 16px; }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.site-footer__links a { font-size: 13px; color: var(--c-on-dark-sub); text-decoration: none; }
.site-footer__links a:hover { color: var(--c-white); }
.site-footer__copy { margin-top: 56px; padding: 20px var(--gutter); border-top: 1px solid var(--c-line-dark); text-align: center; font-size: 12px; color: var(--c-on-dark-sub); }

/* 見出しの文節単位の折り返し（改行タグを使わずに、意味の切れ目でだけ折り返す） */
.phrase { display: inline-block; }

/* ---------- partner（左テキスト／右画像） ---------- */
.partner {
  display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 40px clamp(40px, 5vw, 72px); align-items: center;
}
.partner__name {
  margin-top: 28px; padding-left: 16px; border-left: 2px solid var(--c-accent);
  font-family: var(--f-serif); font-size: 18px; font-weight: 700; color: var(--c-white); letter-spacing: 0.06em; line-height: 1.6;
}
.partner__lead { margin-top: 20px; color: var(--c-on-dark-sub); }
.partner__image { margin: 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--c-line-dark); }
.partner__image img { width: 100%; height: auto; }
@media (max-width: 1023px) { .partner { grid-template-columns: minmax(0, 1fr); } }