/* フォント（2026-11-04）。自分のサーバーに置いた、このページで使う文字だけのもの（SIL Open Font License 1.1。ライセンスの文は fonts フォルダ）。
   文章を変えたら jarvis_work\tools\build_lp_fonts.py で作り直す */
@font-face { font-family: "Inter"; src: url("/static/fonts/inter-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Inter"; src: url("/static/fonts/inter-700.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Zen Kaku Gothic New"; src: url("/static/fonts/zen-kaku-gothic-new-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Zen Kaku Gothic New"; src: url("/static/fonts/zen-kaku-gothic-new-700.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }





:root {
  --navy: #102b3c;
  --green: #126c49;
  --sky: #83cfea;
  --green-light: #7cddb0;
  --muted: #203b4b;
  --on-dark: #f2f7fa;
  --copy-size: clamp(18px, 1.4vw, 20px);
  --line: #c6d0d3;
  --font-latin: "Inter", "Segoe UI", "Helvetica Neue", Arial;
  --font-jp: "Zen Kaku Gothic New", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", Meiryo;
  --font: var(--font-latin), var(--font-jp), sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: #fff; color: var(--navy); font-family: var(--font); font-size: 17px; line-height: 1.9; overflow-wrap: anywhere; -webkit-font-smoothing: antialiased; }
h1, h2, h3, p, figure, dl, dd { margin: 0; }
h1, h2, h3 { line-height: 1.4; font-weight: 700; letter-spacing: -.035em; }
.brand b, .who, .status { font-variant-numeric: lining-nums; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--green); outline-offset: 6px; }
.shell { width: min(1400px, calc(100% - 96px)); margin-inline: auto; }
.section { padding-block: 116px; }
.green { color: var(--green); }
.copy-accent { color: var(--green); font-weight: 700; }
.ai .copy-accent, .voice-detail .copy-accent { color: var(--green-light); }
.eyebrow { display: flex; align-items: center; gap: 12px; font-size: 18px; font-weight: 700; letter-spacing: .05em; line-height: 1.5; }
.eyebrow::before { content: ""; width: 12px; height: 12px; background: var(--green); flex: none; }
.display { font-size: clamp(34px, 4.5vw, 66px); font-weight: 700; letter-spacing: -.045em; line-height: 1.45; }
.skip { position: absolute; z-index: 20; top: 0; left: 20px; padding: 10px 18px; background: var(--navy); color: #fff; transform: translateY(-120%); }
.skip:focus { transform: translateY(0); }
.header-inner { min-height: 88px; display: flex; align-items: center; gap: 32px; border-bottom: 1px solid var(--navy); }
.brand { display: inline-flex; align-items: baseline; font-size: 23px; font-weight: 700; letter-spacing: -.06em; white-space: nowrap; }
.brand span { font-weight: 500; }
.brand b { margin-left: 3px; color: var(--green); }
.nav { display: flex; flex-wrap: wrap; gap: 22px; margin-left: auto; font-size: 16px; font-weight: 700; }
.nav a { padding-block: 10px; text-underline-offset: 6px; }
.nav a:hover { text-decoration: underline; }
.login { display: inline-flex; gap: 20px; align-items: center; padding: 8px 0 8px 24px; border-left: 1px solid var(--line); font-size: 16px; font-weight: 700; }
.login span { font-size: 23px; }
.hero { padding-top: 38px; padding-bottom: 44px; }
.hero-top { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 30px; }
.hero-tag { font-size: 16px; color: var(--green); font-weight: 700; border-bottom: 2px solid currentColor; padding-bottom: 4px; }
.hero h1 { font-size: clamp(38px, 6.3vw, 96px); line-height: 1.22; font-weight: 700; letter-spacing: -.055em; }
.hero-line { display: block; }
.hero-line:nth-child(2) { margin-left: 7%; }
.hero-key { display: block; margin-top: 18px; text-align: right; font-size: clamp(48px, 8.5vw, 130px); color: var(--green); white-space: nowrap; }
.conversation { display: inline-block; margin-left: .04em; color: var(--green); }
@supports ((background-clip: text) or (-webkit-background-clip: text)) {
  .conversation {
    background-image: linear-gradient(110deg, #238cb4 5%, #299f9a 50%, var(--green) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
  }
}
.hero-bottom { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr) auto; align-items: center; gap: 30px; margin-top: 32px; }
.hero-bottom p { font-size: var(--copy-size); font-weight: 500; color: var(--navy); }
.sound { display: grid; grid-template-columns: repeat(13, minmax(0, 1fr)); align-items: center; justify-items: center; gap: clamp(5px, .8vw, 12px); width: min(100%, 380px); height: 132px; color: var(--green); }
.sound i { display: block; width: 100%; max-width: 12px; height: 34%; background: currentColor; border-radius: 999px; transform-origin: center; animation: voice-wave 5.8s ease-in-out infinite; }
.sound i:nth-child(2n) { height: 62%; animation-delay: -1.7s; animation-duration: 6.7s; }
.sound i:nth-child(3n) { height: 86%; animation-delay: -3.1s; }
.sound i:nth-child(5n) { height: 100%; animation-delay: -4.3s; animation-duration: 7.3s; }
.sound i:nth-child(n+8) { color: var(--sky); }
.sound i:nth-child(4n) { animation-duration: 6.2s; animation-delay: -2.4s; }
.sound:hover i { animation-play-state: paused; }
@keyframes voice-wave {
  0%, 100% { transform: scaleY(.45); }
  16% { transform: scaleY(.78); }
  32% { transform: scaleY(.56); }
  49% { transform: scaleY(1); }
  65% { transform: scaleY(.64); }
  82% { transform: scaleY(.86); }
}
.round-link { position: relative; isolation: isolate; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; width: 172px; height: 172px; border-radius: 50%; background: var(--navy); color: #fff; font-size: 17px; font-weight: 700; letter-spacing: .025em; box-shadow: 0 14px 32px -14px rgb(16 43 60 / 38%), 0 0 24px rgb(131 207 234 / 14%); transition: transform .3s, box-shadow .3s; animation: button-glow 8s ease-in-out infinite; }
.round-link::before { content: ""; position: absolute; inset: 0; border-radius: inherit; background: conic-gradient(from 0deg, var(--navy) 0deg 80deg, var(--sky) 130deg, var(--green-light) 180deg, var(--navy) 230deg 360deg); animation: orbit 18s linear infinite; }
.round-link::after { content: ""; position: absolute; inset: 3px; border-radius: inherit; background: var(--navy); border: 1px solid rgb(255 255 255 / 18%); }
.round-link span { position: relative; z-index: 1; }
.round-link span:last-child { font-size: 32px; line-height: 1.2; color: var(--sky); }
.round-link:hover { transform: translateY(-3px); box-shadow: 0 18px 38px -14px rgb(16 43 60 / 42%), 0 0 30px rgb(131 207 234 / 22%); }
.round-link:focus-visible { outline: 3px solid var(--green); outline-offset: 7px; }
@keyframes orbit { to { transform: rotate(360deg); } }
@keyframes button-glow {
  0%, 100% { box-shadow: 0 14px 32px -14px rgb(16 43 60 / 38%), 0 0 18px rgb(131 207 234 / 12%); }
  50% { box-shadow: 0 14px 32px -14px rgb(16 43 60 / 38%), 0 0 30px rgb(124 221 176 / 24%); }
}
.hero, .voice-detail, .intro, .features, .flow, .ai, .faq, .contact { position: relative; isolation: isolate; }
.network { position: absolute; z-index: -1; inset: 0; display: block; width: 100%; height: 100%; overflow: hidden; pointer-events: none; color: var(--green); opacity: .17; }
.voice-detail .network, .ai .network, .contact .network { opacity: .22; }
/* 白い背景の模様（2026-11-04 夜、利用者「すみのかたまりをやめて、ページの白い背景全体に1枚でつながった模様を。紺と同じくらいの存在感で。文字の後ろは薄く」）。
   ページの一番下の層に1枚の svg（.page-network）を敷き、白い区切りは背景を透かす。紺の区切りは紺の背景で上をおおい、それぞれの模様を出す。
   区切りごとの白い模様の面は出さない（いちばん上の svg には模様の元があるので、svg は残して面だけ消す）。
   文字の後ろは、文字のまわりに白いぼかし（text-shadow）を重ねて、模様を薄くする（消さない） */
body { position: relative; }
.page-network { position: absolute; z-index: -1; top: 0; left: 0; display: block; width: 100%; height: 100%; overflow: hidden; pointer-events: none; opacity: .22; }
.page-network-field { fill: url(#network-pattern); animation: network-glide 40s linear infinite; }
.hero .network-field, .intro .network-field, .features .network-field, .flow .network-field, .faq .network-field { display: none; }
.features { background: transparent !important; }
.header, .hero, .intro, .features, .flow, .faq, .footer { text-shadow: 0 0 8px #fff, 0 0 16px #fff, 0 0 26px #fff, 0 0 38px #fff; }
.round-link, .handoff, .skip { text-shadow: none; }
.conversation { text-shadow: none; filter: drop-shadow(0 0 10px #fff) drop-shadow(0 0 22px #fff); }
.voice-detail .network-field, .ai .network-field, .contact .network-field { fill: url(#network-dark-pattern); }
.network-lines { fill: none; stroke: #278d9d; stroke-width: 1.1; }
.network-flow { fill: none; stroke: var(--green); stroke-width: 2.5; stroke-linecap: round; stroke-dasharray: 28 168; animation: network-stream 16s linear infinite; }
.dark-lines { stroke: var(--sky); }
.dark-flow { stroke: var(--green-light); }
.network-nodes { fill: var(--green); }
.network-nodes circle, .network-halos circle { transform-box: fill-box; transform-origin: center; animation: network-pulse 6s ease-in-out infinite; }
.network-nodes circle:nth-child(2), .network-halos circle:nth-child(2) { animation-delay: -1.5s; }
.network-nodes circle:nth-child(3), .network-halos circle:nth-child(3) { animation-delay: -3s; }
.network-nodes circle:nth-child(4), .network-halos circle:nth-child(4) { animation-delay: -4.5s; }
@keyframes network-pulse { 0%, 100% { opacity: .35; transform: scale(.8); } 50% { opacity: 1; transform: scale(1.35); } }
.network-halos { fill: var(--green); opacity: .16; }
.dark-nodes { fill: var(--green-light); }
@keyframes network-stream { to { stroke-dashoffset: -392; } }
@keyframes node-breathe { 0%, 100% { opacity: .5; } 50% { opacity: 1; } }
.network-field { fill: url(#network-pattern); animation: network-drift 28s ease-in-out infinite alternate; }
@keyframes network-drift {
  from { transform: translate(-10px, -6px); opacity: .65; }
  to { transform: translate(14px, 10px); opacity: 1; }
}
/* 白い背景の模様の動き（2026-11-04 夜、利用者「白い部分全体で動いているのが分かるように、上品に」。模様の面は .page-network）。
   模様の面を1マス分（240×200）ずつゆっくり斜めに流し続ける（つなぎ目は見えない）。マスクは動かさないので、文字の近くで消える所は変わらない。
   線の上を光が流れ、点は1秒ずつ順番に光って輪が広がる。紺の区切りの模様（network-dark-pattern）は今までどおり */
@keyframes network-glide { from { transform: translate(0, 0); } to { transform: translate(240px, 200px); } }
#network-pattern .network-flow { stroke-width: 2.2; stroke-dasharray: 20 96; animation: network-stream-light 7s linear infinite; }
@keyframes network-stream-light { to { stroke-dashoffset: -232; } }
#network-pattern .network-nodes circle { animation: node-glow 4s ease-in-out infinite; }
#network-pattern .network-halos { opacity: .45; }
#network-pattern .network-halos circle { animation: halo-ripple 4s ease-out infinite; }
#network-pattern circle:nth-child(2) { animation-delay: -3s; }
#network-pattern circle:nth-child(3) { animation-delay: -2s; }
#network-pattern circle:nth-child(4) { animation-delay: -1s; }
@keyframes node-glow { 0%, 45%, 100% { opacity: .45; transform: scale(.9); } 15% { opacity: 1; transform: scale(1.7); } }
@keyframes halo-ripple { 0% { opacity: 0; transform: scale(.4); } 8% { opacity: .9; } 40%, 100% { opacity: 0; transform: scale(2.2); } }
.voice-detail { padding-block: 52px 76px; background: var(--navy); color: #fff; }
.comparison { display: grid; grid-template-columns: 1fr 1fr; }
.comparison article { min-width: 0; padding: 28px 40px 34px; }
.comparison-before { border-top: 1px solid #758690; color: var(--on-dark); }
.comparison-after { background: var(--navy); color: #fff; border-top: 2px solid var(--green-light); border-left: 1px solid #536b78; }
.comparison-after h2 { color: var(--sky); }
.comparison h2 { font-size: 20px; }
.timeline { margin: 26px 0; }
.track { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 12px; align-items: center; font-size: 11px; }
.track + .track { margin-top: 14px; }
.track-line { display: flex; align-items: center; min-width: 0; height: 40px; }
/* 声の波（2026-11-04 直し）：止まっていても高さのちがう棒の形が見えるよう、休みは元の高さの55%（前は12%で点線のようにつぶれていた）。
   8秒で一回り：相手 0〜2.6秒 → すぐ返事 2.9〜5.5秒 ／ 間が長い返事 5.0〜7.6秒。話していない間も、ゆっくり小さく息をするように動く */
.wave { display: flex; align-items: center; justify-content: space-between; gap: 3px; flex: none; height: 36px; --start: 0s; }
.wave i { display: block; flex: 1; min-width: 0; max-width: 6px; height: var(--h, 70%); border-radius: 999px; background: currentColor;
  --rest: .55; --breath: .47; --hi: .95; --lo: .45; --hi2: .8; --lo2: .35; --o: 0s;
  transform: scaleY(var(--rest)); opacity: .7; animation: dialogue-bars 8s ease-in-out infinite; animation-delay: calc(var(--start) + var(--o)); }
.wave i:nth-child(1) { --h: 38%; } .wave i:nth-child(2) { --h: 58%; } .wave i:nth-child(3) { --h: 82%; }
.wave i:nth-child(4) { --h: 64%; } .wave i:nth-child(5) { --h: 96%; } .wave i:nth-child(6) { --h: 72%; }
.wave i:nth-child(7) { --h: 100%; } .wave i:nth-child(8) { --h: 66%; } .wave i:nth-child(9) { --h: 88%; }
.wave i:nth-child(10) { --h: 54%; } .wave i:nth-child(11) { --h: 76%; } .wave i:nth-child(12) { --h: 46%; } .wave i:nth-child(13) { --h: 32%; }
/* 棒ごとに上がり下がりの順をずらし、少しずつ遅らせて、声らしい波にする */
.wave i:nth-child(2n) { --hi: .7; --lo: .9; --hi2: 1; --lo2: .5; --o: .08s; }
.wave i:nth-child(3n) { --hi: 1; --lo: .3; --hi2: .6; --lo2: .85; --o: .16s; }
.wave i:nth-child(5n) { --hi: .55; --lo: .8; --hi2: .95; --lo2: .4; --o: .04s; }
.speaker { width: 42%; color: var(--sky); }
.response { padding-left: 18%; }
.response em { flex: 1; min-width: 0; font-style: normal; font-size: 12px; font-weight: 700; text-align: center; border-bottom: 2px dashed currentColor; white-space: nowrap; }
.reply { width: 42%; margin-left: 9px; color: var(--sky); }
.comparison-after .reply { width: 58%; color: var(--green-light); --start: 2.9s; }
.comparison-before .reply { --start: 5s; }
.comparison-after .response em { animation: quick-line 8s linear infinite; }
.comparison-before .response em { animation: waiting-line 8s linear infinite; }
@keyframes dialogue-bars {
  0%, 100% { transform: scaleY(var(--rest)); opacity: .7; }
  3.5% { transform: scaleY(var(--hi)); opacity: 1; }
  8% { transform: scaleY(var(--lo)); }
  12.5% { transform: scaleY(var(--hi2)); }
  17% { transform: scaleY(var(--lo2)); }
  21.5% { transform: scaleY(var(--hi)); }
  26% { transform: scaleY(var(--lo)); }
  30% { transform: scaleY(var(--hi2)); opacity: 1; }
  34% { transform: scaleY(var(--rest)); opacity: .7; }
  52% { transform: scaleY(var(--breath)); }
  70% { transform: scaleY(var(--rest)); }
  86% { transform: scaleY(var(--breath)); }
}
/* 「すぐ返事」は返事の間、「間が長い」は待っている間だけ光る */
@keyframes quick-line {
  0%, 35%, 70%, 100% { color: var(--on-dark); }
  37%, 68% { color: var(--green-light); }
}
@keyframes waiting-line {
  0%, 32%, 63%, 100% { color: var(--on-dark); }
  34%, 61% { color: var(--sky); }
}
.comparison-notes { font-size: 17px; font-weight: 500; }
.comparison-notes li::before { content: "—"; margin-right: 10px; }
.comparison-after .comparison-notes { font-weight: 700; }
.comparison-after .comparison-notes li::before { content: "✓"; }
.voice-points { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; margin-top: 48px; }
.voice-points article { border-top: 1px solid #536b78; padding-top: 18px; }
.point-icon { display: block; width: 88px; height: 88px; margin-bottom: 24px; fill: none; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.point-icon .gradient-start { stop-color: var(--sky); }
.point-icon .gradient-end { stop-color: var(--green-light); }
.icon-speed { stroke: url(#speed-gradient); }
.icon-voice { stroke: url(#voice-gradient); }
.icon-person { stroke: url(#person-gradient); }
.voice-points h3 { font-size: 20px; margin-bottom: 12px; }
.voice-points p { font-size: var(--copy-size); font-weight: 500; color: var(--on-dark); }
.intro-heading { display: grid; grid-template-columns: 1.3fr .7fr; gap: 60px; align-items: end; }
.intro-copy { max-width: 430px; justify-self: end; }
.intro-copy p { color: var(--navy); font-size: var(--copy-size); font-weight: 500; }
.text-link { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding-block: 16px; margin-top: 26px; border-bottom: 1px solid currentColor; font-weight: 700; }
.text-link span { font-size: 30px; transition: transform .2s; }
.text-link:hover span { transform: translate(3px, -3px); }
.service-notes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 52px; padding-block: 28px; border-top: 1px solid var(--line); font-size: clamp(17px, 1.55vw, 22px); font-weight: 700; line-height: 1.65; letter-spacing: -.025em; }
.service-notes li { display: grid; grid-template-columns: 30px minmax(0, 1fr); align-items: start; gap: 12px; }
.service-notes li::before { content: "↗"; font-family: var(--font-latin), sans-serif; font-size: 34px; font-weight: 500; line-height: 1; color: var(--green); }
.product { margin-top: 30px; }
.product-layout { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1.7fr) minmax(0, 1fr); border-radius: 28px; overflow: hidden; background: #fff; box-shadow: 0 24px 60px -20px rgb(16 43 60 / 20%), 0 6px 18px -8px rgb(16 43 60 / 12%); }
.product-layout > * { min-width: 0; }
.product-sidebar { padding: 28px; background: #fff; }
.product-sidebar > strong { display: block; font-size: 24px; }
.live { display: block; margin-top: 8px; color: var(--green); font-size: 11px; }
.live::before { content: ""; display: inline-block; width: 6px; height: 6px; background: currentColor; border-radius: 50%; margin-right: 8px; }
.product-sidebar dl { margin-top: 28px; display: grid; gap: 14px; font-size: 11px; }
.product-sidebar dt { color: var(--muted); }
.product-sidebar dd { font-weight: 700; }
.call-list { padding: 30px; align-self: center; }
.call-list li, .mini-list li { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 18px 12px; border-bottom: 1px solid var(--line); font-size: 13px; }
.call-list li > span:last-child, .mini-list li > span:last-child { font-size: 11px; }
.status { color: var(--green); }
.calling { position: relative; isolation: isolate; }
.calling::before { content: ""; position: absolute; z-index: -1; inset: 2px; border-radius: 10px; box-shadow: inset 3px 0 0 var(--green), inset 0 0 18px rgb(131 207 234 / 22%); opacity: .25; animation: call-glow 6s ease-in-out infinite; }
.live::before { animation: node-breathe 6s ease-in-out infinite; }
@keyframes call-glow { 0%, 100% { opacity: .25; } 50% { opacity: .85; } }
.selected { background: #fff; color: var(--green); font-weight: 700; box-shadow: inset 3px 0 0 var(--green); }
.handoff { display: flex; flex-direction: column; justify-content: center; align-items: flex-start; padding: 28px; background: var(--navy); color: #fff; margin: 12px; border-radius: 20px; box-shadow: 0 10px 22px -14px rgb(16 43 60 / 45%); animation: handoff-float 8s ease-in-out infinite; }
@keyframes handoff-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
.handoff-arrow { color: var(--green-light); font-size: 64px; line-height: 1; margin-bottom: 20px; }
.handoff strong { font-size: 25px; }
.handoff p { margin-top: 10px; font-size: 12px; }
.handoff-button { padding: 9px 28px; margin-top: 26px; background: var(--green-light); color: var(--navy); font-size: 13px; font-weight: 700; }
figcaption { margin-top: 12px; text-align: right; color: var(--muted); font-size: 10px; }
.features { border-top: 1px solid var(--line); background: #fff; }
.feature-title { margin-top: 34px; font-size: clamp(44px, 7vw, 100px); line-height: 1.25; }
.feature-title > span { margin-left: 17%; }
.feature-lead { max-width: 600px; margin: 36px 0 60px auto; color: var(--navy); font-size: var(--copy-size); font-weight: 500; }
.feature-row { display: grid; grid-template-columns: 1fr 1fr 60px; gap: 48px; border-top: 1px solid var(--navy); padding-block: 34px; align-items: start; }
.feature-row:last-child { border-bottom: 1px solid var(--navy); }
.feature-row h3 { font-size: clamp(22px, 2.1vw, 30px); letter-spacing: -.035em; }
.feature-row p { color: var(--navy); font-size: var(--copy-size); font-weight: 500; }
.row-arrow { font-size: 48px; line-height: 1; justify-self: end; color: var(--green); }
.mini-list { margin-top: 24px; }
.mini-list li { padding-block: 10px; }
.flow { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.flow-heading .display { font-size: clamp(30px, 3.3vw, 48px); margin-top: 28px; }
.flow-heading > p:last-child { max-width: 430px; margin-top: 28px; color: var(--navy); font-size: var(--copy-size); font-weight: 500; }
.steps { position: relative; display: grid; grid-template-rows: repeat(4, 1fr); --step-cycle: 12s; --node-y: 45px; }
.steps::before, .steps::after { content: ""; position: absolute; pointer-events: none; border-radius: 999px; }
/* しくみの光（2026-11-04 直し）：前の光は白い芯で白い背景に溶けて見えにくかった。
   縦の線は、光が通ったところから濃い色で満ちていき、光は濃い色の玉にして光の輪をつける。丸は光の玉が着いたときに大きくふくらみ、輪が広がる */
.steps::before { left: 9px; top: var(--node-y); bottom: calc(25% - var(--node-y)); width: 4px; background-color: #d3e1e3; background-image: linear-gradient(to bottom, #238cb4, var(--green)); background-repeat: no-repeat; background-size: 100% 0%; animation: step-fill var(--step-cycle) linear infinite; }
.steps::after { left: 3px; top: var(--node-y); width: 16px; height: 16px; transform: translateY(-50%); background: radial-gradient(circle, #fff 0 22%, #2bb3d9 42%, var(--green) 78%); box-shadow: 0 0 0 5px rgb(43 179 217 / 28%), 0 0 22px 6px rgb(35 140 180 / 55%); animation: step-stream var(--step-cycle) linear infinite; }
.steps li { position: relative; padding: 30px 0 30px 44px; border-top: 1px solid var(--line); }
.steps li::before { content: ""; position: absolute; z-index: 1; left: 1px; top: 34px; width: 20px; height: 20px; border: 3px solid var(--green); border-radius: 50%; background: #fff; animation: step-node var(--step-cycle) ease-out infinite; }
.steps li:nth-child(2)::before { animation-delay: 3s; }
.steps li:nth-child(3)::before { animation-delay: 6s; }
.steps li:nth-child(4)::before { animation-delay: 9s; }
@keyframes step-stream {
  0% { top: var(--node-y); opacity: 1; }
  25% { top: calc(25% + var(--node-y)); opacity: 1; }
  50% { top: calc(50% + var(--node-y)); opacity: 1; }
  75%, 80% { top: calc(75% + var(--node-y)); opacity: 1; }
  88%, 100% { top: calc(75% + var(--node-y)); opacity: 0; }
}
@keyframes step-fill {
  0% { background-size: 100% 0%; }
  75%, 100% { background-size: 100% 100%; }
}
@keyframes step-node {
  0% { transform: scale(1.55); border-color: var(--green); background: var(--green); box-shadow: 0 0 0 0 rgb(18 108 73 / 50%), 0 0 22px rgb(35 140 180 / 60%); }
  10% { transform: scale(1.4); background: var(--green); box-shadow: 0 0 0 16px rgb(18 108 73 / 0%), 0 0 16px rgb(35 140 180 / 45%); }
  22% { transform: scale(1.12); background: var(--green-light); box-shadow: 0 0 0 0 rgb(18 108 73 / 0%), 0 0 8px rgb(35 140 180 / 20%); }
  30%, 100% { transform: scale(1); border-color: var(--green); background: #fff; box-shadow: 0 0 0 0 rgb(18 108 73 / 0%), 0 0 0 rgb(35 140 180 / 0%); }
}
.steps h3 { margin-bottom: 10px; font-size: 22px; }
.steps p { color: var(--navy); font-size: var(--copy-size); font-weight: 500; }
.ai { background: var(--navy); color: #fff; }
.ai .eyebrow { color: #fff; }
.ai .eyebrow::before { background: var(--sky); }
.ai-title { margin-top: 40px; font-size: clamp(28px, 5vw, 72px); letter-spacing: -.06em; line-height: 1.5; }
.ai-title > span { display: block; }
.ai-emphasis { text-align: right; color: var(--green-light); }
.ai-title .human-line { margin-top: 40px; padding-top: 30px; border-top: 1px solid #536b78; font-size: clamp(22px, 3vw, 43px); }
.mobile-break { display: none; }
.ai-copy { display: grid; grid-template-columns: 1.2fr 1fr; gap: 50px; max-width: 960px; margin: 40px 0 0 auto; font-size: var(--copy-size); font-weight: 500; color: var(--on-dark); }
.faq { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; }
.faq .display { margin-top: 26px; font-size: clamp(30px, 3.3vw, 48px); }
.faq-list { border-top: 1px solid var(--navy); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-block: 26px; list-style: none; font-weight: 700; cursor: pointer; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; font-size: 26px; font-weight: 400; color: var(--green); }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 38px 26px 0; color: var(--navy); font-size: var(--copy-size); font-weight: 500; }
.contact { background: var(--navy); color: #fff; }
.contact .text-link { color: var(--sky); }
.contact-layout { display: grid; grid-template-columns: 1.2fr 1fr; gap: 70px; align-items: end; }
.contact h2 { font-size: clamp(60px, 8vw, 116px); line-height: 1.15; letter-spacing: -.07em; }
.contact h2 span { display: inline-block; margin-left: .1em; color: var(--green-light); }
.contact p { font-size: var(--copy-size); font-weight: 500; color: var(--on-dark); }
.footer { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-block: 32px; }
.footer small { color: var(--muted); font-size: 11px; }
@media (min-width: 1600px) { .hero { padding-top: 50px; } }
@media (max-width: 1100px) {
  .shell { width: calc(100% - 64px); }
  .nav { gap: 16px; }
  .header-inner { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 20px; padding-block: 18px 10px; }
  .nav { grid-column: 1 / -1; grid-row: 2; margin-left: 0; }
  .login { grid-column: 2; grid-row: 1; }
  .brand { font-size: 20px; }
  .product-layout { grid-template-columns: minmax(0, .8fr) minmax(0, 1.8fr); }
  .handoff { grid-column: 1 / -1; display: grid; grid-template-columns: auto auto 1fr auto; gap: 22px; align-items: center; }
  .handoff-arrow { font-size: 40px; margin: 0; }
  .handoff p, .handoff-button { margin: 0; }
  .feature-row { gap: 30px; }
  .flow, .faq { gap: 40px; }
}
@media (max-width: 820px) {
  .nav { display: flex; font-size: 16px; }
  .login { margin-left: auto; }
  .section { padding-block: 80px; }
  .hero h1 { font-size: 6.8vw; }
  .hero-key { font-size: 9.4vw; }
  .hero-bottom { grid-template-columns: 1fr auto; }
  .sound { grid-column: 1 / -1; width: min(100%, 380px); height: 120px; }
  .comparison article { padding: 24px; }
  .voice-points { gap: 24px; }
  .voice-points h3 { font-size: 17px; }
  .intro-heading { grid-template-columns: 1fr; gap: 30px; }
  .intro-copy { max-width: 460px; }
  .service-notes { grid-template-columns: minmax(0, 1fr); gap: 20px; font-size: 20px; }
  .feature-row { grid-template-columns: 1fr 1fr; }
  .row-arrow { display: none; }
  .flow, .faq { grid-template-columns: 1fr; }
  .flow-heading > p:last-child { max-width: none; }
  .contact-layout { gap: 40px; }
}
@media (max-width: 540px) {
  :root { --copy-size: 17px; }
  .shell { width: calc(100% - 36px); }
  .section { padding-block: 64px; }
  .header-inner { min-height: 70px; gap: 10px 12px; padding-block: 16px 10px; }
  .nav { gap: 0 18px; font-size: 15px; }
  .brand { font-size: 19px; }
  .login { gap: 8px; padding-left: 14px; font-size: 15px; }
  .hero { padding-top: 28px; padding-bottom: 32px; }
  .hero-top { flex-wrap: wrap; margin-bottom: 28px; gap: 14px; }
  .eyebrow { font-size: 16px; letter-spacing: .02em; }
  .hero-tag { font-size: 14px; }
  .eyebrow { gap: 7px; }
  .eyebrow::before { width: 10px; height: 10px; }
  .hero h1 { font-size: 8.5vw; line-height: 1.5; letter-spacing: -.055em; }
  .hero-line:nth-child(2) { margin-left: 0; }
  .hero-key { margin-top: 20px; font-size: 11.8vw; line-height: 1.4; text-align: left; }
  .hero-bottom { grid-template-columns: minmax(0, 1fr) auto; gap: 18px 14px; margin-top: 26px; }
  .sound { height: 96px; width: min(100%, 340px); gap: 9px; }
  .sound i { max-width: 11px; }
  .hero-bottom p { grid-column: 1 / -1; font-size: var(--copy-size); }
  .hero-bottom .round-link { grid-column: 2; }
  .round-link { width: 144px; height: 144px; gap: 8px; font-size: 16px; }
  .round-link span:last-child { font-size: 28px; }
  .voice-detail { padding-block: 32px 44px; }
  .comparison { grid-template-columns: minmax(0, 1fr); }
  .comparison article { padding: 24px 18px; }
  .comparison-after { border-left: 0; }
  .comparison h2 { font-size: 18px; }
  .comparison-notes { font-size: 16px; }
  .voice-points { grid-template-columns: minmax(0, 1fr); margin-top: 28px; gap: 24px; }
  .voice-points article { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 10px 18px; }
  .point-icon { grid-row: span 2; width: 64px; height: 64px; margin: 0; }
  .voice-points h3 { font-size: 18px; margin: 0; }
  .voice-points p { grid-column: 2; }
  .display { font-size: 8.5vw; }
  .intro-copy { max-width: none; }
  .service-notes { gap: 22px; margin-top: 32px; padding-block: 26px; font-size: 17px; }
  .service-notes li { grid-template-columns: 28px minmax(0, 1fr); gap: 12px; }
  .service-notes li::before { font-size: 30px; }
  .product-layout { grid-template-columns: minmax(0, 1fr); border-radius: 22px; box-shadow: 0 16px 32px -16px rgb(16 43 60 / 24%); }
  .product-sidebar { padding: 22px; }
  .product-sidebar > strong { display: inline-block; margin-right: 18px; font-size: 20px; }
  .live { display: inline-block; margin-top: 0; }
  .product-sidebar dl { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 18px; font-size: 10px; }
  .call-list { padding: 12px; }
  .call-list li { font-size: 12px; }
  .handoff { grid-template-columns: 1fr auto; gap: 10px; padding: 20px; }
  .handoff-arrow { display: none; }
  .handoff strong { font-size: 20px; }
  .handoff p { grid-column: 1; font-size: 10px; }
  .handoff-button { grid-column: 2; grid-row: 1 / span 2; padding: 8px 20px; }
  figcaption { text-align: left; }
  .feature-title { margin-top: 28px; font-size: 11vw; }
  .feature-title > span { margin-left: 7%; }
  .feature-lead { margin-block: 28px 36px; }
  .feature-row { grid-template-columns: minmax(0, 1fr); gap: 18px; padding-block: 26px; }
  .feature-row h3 { font-size: 24px; }
  .mini-list li { font-size: 12px; }
  .flow-heading .display { font-size: 8.5vw; }
  .flow-heading > p:last-child { font-size: var(--copy-size); }
  .steps li { padding: 24px 0 24px 38px; }
  .steps { --node-y: 39px; }
  .steps li::before { top: 28px; }
  .steps h3 { font-size: 20px; }
  .ai-title { margin-top: 26px; font-size: 8.5vw; }
  .ai-emphasis { text-align: left; }
  .ai-title .human-line { margin-top: 28px; padding-top: 24px; font-size: 6.1vw; }
  .mobile-break { display: block; }
  .ai-copy { grid-template-columns: minmax(0, 1fr); gap: 16px; margin-top: 28px; }
  .faq { gap: 30px; }
  .faq .display { margin-top: 20px; font-size: 34px; }
  .faq summary { font-size: 17px; gap: 18px; padding-block: 22px; }
  .faq details p { padding-right: 0; }
  .contact-layout { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .contact h2 { font-size: 20vw; }
  .footer { align-items: flex-start; flex-direction: column; gap: 12px; padding-block: 26px; }
}
/* 未対応ブラウザでは通常表示。対応する場合だけスクロールに連動。 */
@supports (animation-timeline: view()) and (animation-range: entry 0% entry 100%) {
  @media (prefers-reduced-motion: no-preference) {
    .section h2, .section h3, .section .eyebrow,
    .intro-copy p, .feature-lead, .feature-row p,
    .flow-heading > p:last-child, .steps p, .ai-copy p,
    .faq details p, .contact p, .voice-points h3, .voice-points p {
      animation: soft-reveal 1s linear both;
      animation-timeline: view();
      animation-range: entry 0% entry 100%;
    }
  }
}
@keyframes soft-reveal {
  from { opacity: .25; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .round-link:hover { transform: none; }
  .steps::after { display: none; }
  .wave i { transform: scaleY(.8); opacity: 1; }
}
@media print {
  .network, .page-network { display: none; }
  *, *::before, *::after { animation: none !important; }
}

/* ロゴの絵（D案、2026-11-04） */
.brand-mark { display: block; align-self: center; width: auto; height: 1.5em; margin-right: .4em; }

/* 規約3ページへのリンク（2026-11-04） */
.footer-links { display: flex; flex-wrap: wrap; gap: 6px 24px; font-size: 14px; font-weight: 700; }
.footer-links a:hover { color: var(--green); text-decoration: underline; text-underline-offset: 5px; }