:root{
  --bg:#fbfaff; --bg-2:#ffffff;
  --surface:rgba(255,255,255,0.72); --surface-solid:#ffffff; --surface-2:#faf8ff;
  --glass:rgba(255,255,255,0.55); --glass-border:rgba(124,58,237,0.14);
  --ink:#241b35; --text:#3c3651; --text-dim:#6d6685; --text-faint:#9b94ae;
  --purple:#8b5cf6; --purple-deep:#7c3aed; --cyan:#22d3ee; --blue:#3b82f6; --pink:#ec4899; --amber:#e0a93b; --red:#ef6b7d;
  --grad:linear-gradient(135deg,#8b5cf6,#22d3ee);
  --grad-3:linear-gradient(135deg,#a855f7,#6366f1 50%,#22d3ee);
  --glow-purple:0 20px 60px rgba(124,58,237,0.18);
  --border:rgba(124,58,237,0.14); --border-soft:rgba(124,58,237,0.07);
  --shadow:0 10px 40px rgba(124,58,237,0.10); --shadow-lg:0 24px 70px rgba(124,58,237,0.16);
  --radius:18px; --maxw:1240px;
  --ease:cubic-bezier(.22,.61,.36,1); --ease2:cubic-bezier(.16,1,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:clip;max-width:100%}
body{
  font-family:"Noto Sans JP",system-ui,sans-serif;
  background:radial-gradient(130% 90% at 50% -8%, #f1e9ff 0%, rgba(234,244,255,0.55) 42%, rgba(251,250,255,0) 74%), var(--bg);
  background-attachment:fixed; color:var(--text); line-height:1.8; overflow-x:clip; max-width:100%; -webkit-font-smoothing:antialiased;
}
::selection{background:rgba(139,92,246,0.22)}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 40px}
.em{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.mono{font-family:"Outfit"}

/* ---- 3D BACKGROUND ---- */
#spiral-canvas{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.scroll-container{position:relative;z-index:1;width:100%;max-width:100%}

/* ---- NAV ---- */
header{position:fixed;top:0;left:0;right:0;z-index:80;transition:background .4s,border-color .4s,backdrop-filter .4s;border-bottom:1px solid transparent;transform:translateZ(0);-webkit-backface-visibility:hidden;backface-visibility:hidden}
header.scrolled{background:rgba(255,255,255,0.92);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-soft);box-shadow:0 6px 30px rgba(124,58,237,0.06)}
.nav{max-width:var(--maxw);margin:0 auto;width:100%;box-sizing:border-box;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 40px;padding-left:max(40px, calc(env(safe-area-inset-left, 0px) + 24px));padding-right:max(40px, calc(env(safe-area-inset-right, 0px) + 24px));padding-top:max(14px, env(safe-area-inset-top, 0px))}
.brand{display:flex;align-items:center;gap:11px;line-height:0;flex:none}
.brand img{display:block;height:32px;width:auto}
.foot-info .brand img{height:40px}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(.7);opacity:.55}}
.navlinks{display:flex;gap:22px;font-size:.82rem;color:var(--text-dim);font-weight:600;font-family:"Outfit";letter-spacing:.04em;flex:1 1 auto;min-width:0;justify-content:center;flex-wrap:nowrap}
.navlinks a{position:relative;transition:color .25s;flex:none}
.navlinks a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--grad);transition:width .3s var(--ease)}
.navlinks a:hover{color:var(--ink)}
.navlinks a:hover::after{width:100%}
.nav-auth{display:inline-flex;align-items:center;gap:8px;flex:none}
.nav-signin,
.nav-signup,
.nav-cta{
  -webkit-appearance:none;appearance:none;
  font-family:"Outfit";font-weight:700;font-size:.76rem;letter-spacing:.02em;
  padding:10px 16px;border-radius:999px;cursor:pointer;line-height:1.2;white-space:nowrap;
  text-decoration:none;display:inline-flex;align-items:center;justify-content:center;
  transition:transform .2s,box-shadow .25s,background .25s,border-color .25s,color .25s;
  box-sizing:border-box;margin:0;vertical-align:middle;
}
/* 1) Sign In — outline */
.nav-signin{
  background:#fff;color:var(--ink);border:1px solid var(--border);
}
.nav-signin:hover{transform:translateY(-1px);border-color:var(--purple);color:var(--purple-deep);background:rgba(139,92,246,0.06)}
/* 2) Sign Up — soft fill */
.nav-signup{
  background:#f3eaff;color:var(--purple-deep);border:1px solid rgba(124,58,237,0.35);
}
.nav-signup:hover{transform:translateY(-1px);background:#ebe0ff;border-color:var(--purple);box-shadow:0 6px 16px rgba(124,58,237,0.14)}
/* 3) Try for Free — clean gradient pill (no border = no edge artifacts) */
.nav-cta{
  background:linear-gradient(135deg,#8b5cf6,#22d3ee);
  color:#fff;border:0;outline:0;
  box-shadow:0 8px 22px rgba(139,92,246,0.38);
  overflow:hidden;isolation:isolate;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(139,92,246,0.55);color:#fff}
.nav-cta:focus-visible{outline:2px solid var(--purple);outline-offset:2px}
.burger{display:none;background:none;border:0;color:var(--ink);cursor:pointer;padding:8px;margin:-4px;flex:none;border-radius:10px}
.burger:hover{background:rgba(139,92,246,0.08)}
.burger svg{width:24px;height:24px;display:block}

/* Mobile menu — card sheet */
.mobile-menu{position:fixed;inset:0;z-index:120;background:rgba(36,27,53,0.42);backdrop-filter:blur(8px);display:flex;flex-direction:column;justify-content:flex-start;align-items:stretch;padding:max(12px,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) max(16px,env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left));transform:translateY(-100%);transition:transform .4s var(--ease),opacity .3s;visibility:hidden;opacity:0}
.mobile-menu.open{transform:translateY(0);visibility:visible;opacity:1}
.mobile-menu-panel{background:#fff;border-radius:22px;box-shadow:0 24px 70px rgba(36,27,53,0.28);padding:16px 18px 18px;display:flex;flex-direction:column;gap:6px;max-height:min(88svh,680px);overflow:hidden;border:1px solid var(--border-soft)}
.mobile-menu-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:4px 2px 14px;border-bottom:1px solid var(--border-soft);margin-bottom:6px}
.mobile-menu-top .brand img{height:28px}
.mobile-menu-top-actions{display:flex;align-items:center;gap:8px;flex:none}
.mobile-menu-links{display:flex;flex-direction:column;gap:2px;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:2px 0;min-height:0}
.mobile-menu-links a{font-size:1.06rem;font-weight:700;padding:13px 14px;border-radius:12px;color:var(--ink);font-family:"Outfit";line-height:1.3;border:0;transition:background .2s,color .2s}
.mobile-menu-links a:hover,.mobile-menu-links a:active{background:rgba(139,92,246,0.09);color:var(--purple-deep)}
.mobile-menu .close{background:rgba(139,92,246,0.08);border:0;color:var(--ink);cursor:pointer;padding:9px;border-radius:12px;line-height:0}
.mobile-menu .close:hover{background:rgba(139,92,246,0.16)}
.mobile-menu .close svg{width:22px;height:22px;display:block}
.mobile-menu-actions{display:flex;flex-direction:column;gap:10px;padding-top:12px;margin-top:8px;border-top:1px solid var(--border-soft)}
.mobile-menu-actions .btn{width:100%;margin:0;justify-content:center;padding:15px 20px;font-size:.95rem}
.mobile-menu-actions .btn-primary{box-shadow:0 10px 28px rgba(139,92,246,0.35)}
.mobile-menu-actions .btn-signup{background:rgba(139,92,246,0.12);color:var(--purple-deep);border:1px solid rgba(124,58,237,0.28)}
.mobile-menu-actions .btn-signup:hover{background:rgba(139,92,246,0.2);border-color:var(--purple);transform:translateY(-2px)}
.mobile-menu-top .lang-switch button{padding:7px 11px;font-size:.68rem;min-width:2.2rem}

/* ---- BUTTONS / ARROW LINK ---- */
.btn{font-family:"Outfit";font-weight:700;font-size:.98rem;letter-spacing:.02em;padding:16px 32px;border-radius:999px;cursor:pointer;transition:transform .2s var(--ease),box-shadow .3s,background .3s;display:inline-flex;align-items:center;gap:10px;border:1px solid transparent}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 30px rgba(139,92,246,0.4)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 50px rgba(139,92,246,0.6)}
.btn-ghost{background:rgba(255,255,255,0.6);border:1px solid var(--border);color:var(--ink);backdrop-filter:blur(10px)}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--purple);background:rgba(139,92,246,0.08)}
.btn .arr{transition:transform .25s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
.arrow-link{display:inline-flex;align-items:center;gap:12px;font-family:"Outfit";font-weight:700;font-size:.9rem;letter-spacing:.12em;text-transform:uppercase;color:var(--purple-deep);position:relative;padding-bottom:6px}
.arrow-link::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--border);}
.arrow-link .al-arrow{display:inline-flex;width:40px;height:40px;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:50%;font-size:1.1rem;transition:transform .3s var(--ease),background .3s,color .3s,border-color .3s}
.arrow-link:hover .al-arrow{transform:translateX(6px);background:var(--purple);color:#fff;border-color:var(--purple)}

/* ---- REVEAL / MASK ---- */
.reveal{opacity:0;transform:translateY(46px);transition:opacity 1s var(--ease),transform 1.1s var(--ease2);will-change:transform,opacity}
.reveal.in{opacity:1;transform:none}
.mask{overflow:hidden;display:block}
.mask>*{display:block;transform:translateY(115%);transition:transform 1.05s var(--ease2);will-change:transform;padding-bottom:.12em;margin-bottom:-.12em}
.mask.in>*{transform:translateY(0)}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important}
  .reveal,.mask>*{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---- HERO ---- */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;isolation:isolate;overflow:hidden;padding:120px 0 120px}
.hero-inner{max-width:var(--maxw);margin:0 auto;padding:0 40px;width:100%;position:relative;z-index:3}
.hero-kicker{display:inline-flex;align-items:center;gap:10px;font-family:"Outfit";font-weight:600;font-size:.76rem;letter-spacing:.2em;text-transform:uppercase;color:var(--purple-deep);padding:8px 16px;border:1px solid var(--border);border-radius:999px;background:rgba(139,92,246,0.08);margin-bottom:34px}
.hero-kicker .spark{width:6px;height:6px;border-radius:50%;background:var(--purple);box-shadow:0 0 10px var(--purple)}
.hero-title{font-family:"Noto Sans JP";font-weight:900;font-size:clamp(2.9rem,8.4vw,6.6rem);line-height:1.04;letter-spacing:-.02em;color:var(--ink);margin-bottom:18px}
.hero-title .em-grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(1.02rem,1.5vw,1.2rem);color:var(--text-dim);margin:28px 0 40px;max-width:620px}
.hero-sub b{color:var(--ink);font-weight:700}
.hero-sub .hl{color:var(--purple-deep);font-weight:700}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;margin-top:30px;font-size:.92rem;color:var(--purple-deep);background:rgba(139,92,246,0.1);border:1px solid var(--border);border-radius:10px;padding:9px 18px}
.hero-scroll{position:absolute;bottom:120px;right:40px;z-index:2;display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--text-faint);font-size:.66rem;letter-spacing:.28em;text-transform:uppercase;font-family:"Outfit"}
.hero-scroll .mouse{width:22px;height:36px;border:1.5px solid var(--text-faint);border-radius:12px;position:relative}
.hero-scroll .mouse::before{content:"";position:absolute;top:6px;left:50%;transform:translateX(-50%);width:3px;height:7px;border-radius:2px;background:var(--purple);animation:scrollAnim 1.8s var(--ease) infinite}
@keyframes scrollAnim{0%{opacity:0;top:6px}40%{opacity:1}80%,100%{opacity:0;top:18px}}

/* EN: match JA visual weight while keeping left composition */
html[lang="en"] .hero{padding:110px 0 130px}
html[lang="en"] .hero-kicker{letter-spacing:.1em;font-size:.8rem;max-width:min(100%,48ch);white-space:normal;line-height:1.35;text-align:left}
html[lang="en"] .hero-title{font-family:"Outfit",sans-serif;font-size:clamp(3.1rem,8vw,6.1rem);line-height:1.04;letter-spacing:-.04em;max-width:17ch;font-weight:800}
html[lang="en"] .hero-sub{max-width:60ch;font-size:clamp(1.1rem,1.65vw,1.28rem);line-height:1.75;margin:28px 0 38px}
html[lang="en"] .hero-badge{font-size:.96rem;padding:10px 18px}
html[lang="en"] .mq-item{font-size:.98rem;padding:0 24px;gap:24px;letter-spacing:.04em}
html[lang="en"] .marquee-track{animation-duration:46s}
html[lang="en"] .hero-scroll{bottom:108px}

/* ---- MARQUEE ---- */
.marquee{position:absolute;bottom:0;left:0;right:0;padding:22px 0;border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft);background:rgba(255,255,255,0.4);backdrop-filter:blur(6px);overflow:hidden;z-index:2}
.marquee-track{display:flex;gap:0;width:max-content;animation:marq 34s linear infinite}
.mq-item{font-family:"Outfit";font-weight:700;font-size:1.05rem;letter-spacing:.06em;color:var(--ink);padding:0 30px;display:inline-flex;align-items:center;gap:30px;white-space:nowrap;opacity:.72}
.mq-item .mq-dot{width:7px;height:7px;border-radius:50%;background:var(--purple)}
@keyframes marq{to{transform:translateX(-50%)}}
@media(prefers-reduced-motion:reduce){.marquee-track{animation:none}}

/* ---- STAT BAND ---- */
.statband-sec{position:relative;padding:0}
.statband{max-width:var(--maxw);margin:0 auto;padding:64px 40px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border-soft)}
.sb{background:transparent;padding:8px 30px;border-left:1px solid var(--border-soft)}
.sb:first-child{border-left:0}
.sb .num{font-family:"Outfit";font-weight:800;font-size:clamp(2.6rem,4.4vw,4rem);line-height:1;color:var(--purple-deep);display:flex;align-items:baseline;gap:2px}
.sb .num .unit{font-size:1.3rem;color:var(--ink);font-weight:600;margin-left:2px}
.sb .num .pre{font-size:1rem;color:var(--text-dim);font-weight:500;margin-right:4px}
.sb-l{margin-top:14px;font-size:.9rem;color:var(--text-dim);font-weight:600}

/* ---- CHAPTER ---- */
.chapter{position:relative;padding:clamp(96px,13vh,168px) 0;overflow-x:clip}
.chapter.tint-1{background:linear-gradient(180deg,rgba(246,241,254,0) 0%,#f6f1fe 18%,#f6f1fe 82%,rgba(246,241,254,0) 100%)}
.chapter.tint-2{background:linear-gradient(180deg,rgba(233,247,251,0) 0%,#edf7fb 18%,#f4f1fe 82%,rgba(244,241,254,0) 100%)}
.chapter.tint-grad{background:linear-gradient(135deg,#f3edff 0%,#eaf4ff 60%,#e9f7fb 100%)}
.chap-word{font-family:"Outfit";font-weight:900;font-size:clamp(3.2rem,13vw,10.5rem);line-height:.92;letter-spacing:-.03em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.13;margin-bottom:-.14em;pointer-events:none;user-select:none;overflow:visible;max-width:100%}
.chap-top{display:flex;align-items:center;gap:18px;margin-bottom:26px}
.chap-idx{font-family:"Outfit";font-weight:800;font-size:1rem;color:var(--purple-deep);letter-spacing:.05em}
.chap-rule{flex:1;max-width:80px;height:1px;background:var(--border)}
.chap-count{font-family:"Outfit";font-weight:600;font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;color:var(--text-faint)}
.chap-intro{position:relative;margin-bottom:64px;max-width:900px;overflow:visible}
.chap-title{font-family:"Noto Sans JP";font-weight:900;font-size:clamp(1.9rem,4.4vw,3.4rem);line-height:1.28;letter-spacing:-.01em;color:var(--ink);margin-bottom:22px;max-width:24ch;overflow:visible;padding-bottom:.06em}
.chap-lead{font-size:1.06rem;color:var(--text-dim);max-width:64ch;margin-bottom:32px}
.chap-lead b{color:var(--ink);font-weight:700}
.chap-lead .hl{color:var(--purple-deep);font-weight:700}
html[lang="en"] .chap-intro{max-width:min(100%,1040px)}
html[lang="en"] .chap-word{font-size:clamp(2.4rem,6.8vw,6.2rem);letter-spacing:-.05em;line-height:.9;white-space:nowrap;max-width:none;overflow:visible;-webkit-mask-image:none;mask-image:none}
html[lang="en"] .chap-title{font-family:"Outfit",sans-serif;max-width:min(100%,22ch);line-height:1.2;letter-spacing:-.03em;overflow-wrap:break-word;word-break:normal}
html[lang="en"] .chap-lead{max-width:min(100%,62ch)}

/* section sub-heads inside a chapter */
.subhead{font-family:"Outfit";font-weight:700;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;color:var(--purple-deep);margin:0 0 18px;display:flex;align-items:center;gap:12px}
.subhead::before{content:"";width:30px;height:2px;background:var(--grad)}
.subtitle{font-weight:900;font-size:clamp(1.5rem,3vw,2.2rem);line-height:1.3;color:var(--ink);margin-bottom:16px;letter-spacing:-.01em}
.subtext{font-size:1rem;color:var(--text-dim);max-width:62ch;margin-bottom:40px}
.subtext b{color:var(--ink)}
.block{margin-top:88px}

/* ---- GLASS CARD base ---- */
.glass-card{background:var(--surface);backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:var(--radius);transition:transform .4s var(--ease),box-shadow .4s,border-color .4s}
.glass-card:hover{transform:translateY(-6px);box-shadow:var(--glow-purple);border-color:var(--border)}

/* ---- PROBLEM ---- */
.prob-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.pcard{background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-left:3px solid var(--purple);border-radius:var(--radius);padding:32px;transition:transform .35s var(--ease),box-shadow .35s,border-color .35s}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--glow-purple);border-left-color:var(--cyan)}
.pcard h3{font-size:1.2rem;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:11px;color:var(--ink)}
.pcard h3 .ico{font-size:1.5rem;line-height:1}
.pcard p{color:var(--text-dim);font-size:.95rem}

/* ---- RAG DIAGRAM (SOLUTION left) ---- */
.rag-diagram-frame{display:flex;align-items:center;justify-content:center}
.rag-diagram{width:100%;height:100%;display:block;padding:16px}

/* ---- ANSWER FLOW (hearing -> MRAG) ---- */
.answer-flow{display:flex;flex-direction:column;align-items:center;text-align:center}
.af-arrow{font-size:2rem;color:var(--purple);line-height:1;margin:2px 0 14px;animation:afbob 2.4s var(--ease) infinite}
@keyframes afbob{0%,100%{transform:translateY(0);opacity:.7}50%{transform:translateY(6px);opacity:1}}
.af-card{position:relative;overflow:hidden;width:100%;max-width:820px;padding:40px 42px;border-radius:22px;border:1px solid transparent;background:linear-gradient(var(--surface-solid),var(--surface-solid)) padding-box,var(--grad) border-box;box-shadow:0 22px 64px rgba(139,92,246,0.22)}
.af-card::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 90% at 50% 0%,rgba(139,92,246,0.08),transparent 60%);pointer-events:none}
.af-label{position:relative;font-size:.95rem;color:var(--text-dim);font-weight:600;margin-bottom:6px}
.af-brand{position:relative;font-family:"Outfit";font-weight:900;font-size:clamp(2.6rem,6.4vw,4rem);line-height:1;letter-spacing:.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:16px}
.af-desc{position:relative;font-size:1.02rem;color:var(--text-dim);max-width:54ch;margin:0 auto;line-height:1.75}
.af-desc b{color:var(--purple-deep);font-weight:700}

/* ---- DIFFERENTIATORS (replaces compare table) ---- */
.diff-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.dcard{position:relative;background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:18px;padding:28px 26px;display:flex;flex-direction:column;transition:transform .35s var(--ease),box-shadow .35s,border-color .35s}
.dcard:hover{transform:translateY(-6px);box-shadow:var(--glow-purple);border-color:var(--border)}
.dcard .dico{width:46px;height:46px;border-radius:12px;background:var(--grad);display:flex;align-items:center;justify-content:center;margin-bottom:16px;box-shadow:0 8px 22px rgba(139,92,246,0.4)}
.dcard .dico svg{width:24px;height:24px;stroke:#fff;fill:none;stroke-width:1.9}
.dcard h4{font-size:1.14rem;font-weight:700;color:var(--ink);margin-bottom:9px;line-height:1.4}
.dcard .dmrag{font-size:.9rem;color:var(--text-dim);line-height:1.65;flex:1}
.dcard .dmrag b{color:var(--purple-deep)}
.dcard .dvs{display:flex;align-items:center;gap:9px;margin-top:16px;padding-top:14px;border-top:1px solid var(--border-soft);font-size:.82rem;color:var(--text-faint)}
.dcard .dvs .tag{font-size:.72rem;font-weight:700;padding:3px 10px;border-radius:20px;flex:none}
.dcard .dvs .tag.x{background:rgba(239,107,125,0.12);color:var(--red);border:1px solid rgba(239,107,125,0.25)}
.dcard .dvs .tag.tri{background:rgba(224,169,59,0.14);color:var(--amber);border:1px solid rgba(224,169,59,0.3)}
.diff-note{margin-top:22px;background:rgba(139,92,246,0.08);border-left:4px solid var(--purple);border-radius:0 12px 12px 0;padding:20px 26px;font-size:1.02rem;color:var(--text-dim);line-height:1.7}
.diff-note strong{color:var(--purple-deep)}

/* ---- SPLIT / SCENES ---- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
@media(min-width:981px){.split--cl .col-3d{order:-1}}
.col-text h3{font-size:1.5rem;font-weight:700;margin-bottom:18px;color:var(--ink)}
.col-text p{color:var(--text-dim);margin-bottom:16px;font-size:1.02rem}
.col-text p b{color:var(--ink);font-weight:700}
.device-note{display:flex;align-items:center;gap:10px;margin-top:6px;font-size:.92rem;color:var(--text-faint);font-style:italic}
.scene-tall{position:relative;height:clamp(360px,52vh,540px);border-radius:22px;overflow:hidden;background:radial-gradient(120% 120% at 50% 0%,#f1e9ff 0%,#eaf4ff 55%,#ffffff 100%);box-shadow:inset 0 0 70px rgba(124,58,237,0.08),0 20px 60px rgba(124,58,237,0.14);border:1px solid var(--glass-border)}
.scene-wide{position:relative;height:clamp(380px,56vh,560px);border-radius:24px;overflow:hidden;margin:8px 0 44px;background:radial-gradient(120% 140% at 50% 0%,#f1e9ff 0%,#eaf4ff 55%,#ffffff 100%);box-shadow:inset 0 0 80px rgba(124,58,237,0.08),0 20px 60px rgba(124,58,237,0.14);border:1px solid var(--glass-border)}
.scene-canvas{position:absolute;inset:0;width:100%;height:100%;display:block}

/* ---- STATS GRID ---- */
.stats-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:20px;margin-bottom:44px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.scard{background:var(--surface-solid);padding:34px 26px 30px;transition:background .35s}
.scard:hover{background:rgba(139,92,246,0.08)}
.scard .num{font-family:"Outfit";font-weight:800;line-height:1;display:flex;align-items:baseline;gap:4px;color:var(--purple-deep);font-size:clamp(2.4rem,3.6vw,3.3rem)}
.scard .num .pre{font-size:1rem;color:var(--text-dim);font-weight:500;margin-right:2px}
.scard .num .unit{font-size:1.3rem;color:var(--ink);font-weight:600}
.scard .cat{font-weight:700;font-size:1.02rem;margin:14px 0 6px;color:var(--ink)}
.scard .det{font-size:.83rem;color:var(--text-faint)}
.stat-src{margin-top:22px;font-size:.82rem;color:var(--text-faint)}

/* ---- HEARING ---- */
.hear-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-bottom:24px}
.hcard{position:relative;background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:var(--radius);padding:30px 32px;transition:transform .35s var(--ease),box-shadow .35s}
.hcard:hover{transform:translateY(-6px);box-shadow:var(--glow-purple)}
.hcard .q{font-family:"Outfit";font-weight:900;font-size:3.4rem;line-height:1;margin-bottom:10px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.85}
.hcard .qt{font-size:1.3rem;font-weight:700;line-height:1.45;margin-bottom:12px;color:var(--ink)}
.hcard .qi{font-size:.92rem;color:var(--text-faint)}
.hcard .htag{position:absolute;top:26px;right:26px;font-size:.72rem;padding:4px 11px;border-radius:20px;font-weight:700;letter-spacing:.04em}
.htag.ceo{background:rgba(245,158,11,0.15);color:#f59e0b;border:1px solid rgba(245,158,11,0.3)}
.htag.mgr{background:rgba(139,92,246,0.15);color:var(--purple-deep);border:1px solid var(--border)}
.htag.both{background:rgba(34,211,238,0.12);color:var(--cyan);border:1px solid rgba(34,211,238,0.25)}
.note-box{background:rgba(139,92,246,0.08);border-left:4px solid var(--purple);border-radius:0 12px 12px 0;padding:22px 26px;font-size:1.05rem;color:var(--text-dim);line-height:1.7}
.note-box strong{color:var(--purple-deep)}

/* ---- ACCOMPANY ---- */
.acc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.acc{background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:16px;padding:26px 24px;transition:transform .35s var(--ease),box-shadow .35s}
.acc:hover{transform:translateY(-6px);box-shadow:var(--glow-purple)}
.acc .pn{font-family:"Outfit";font-weight:800;font-size:.95rem;color:#fff;background:var(--grad);width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:16px;box-shadow:0 6px 20px rgba(139,92,246,0.5)}
.acc.dim .pn{background:rgba(124,58,237,0.06);color:var(--text-faint);box-shadow:none;border:1px solid var(--border)}
.acc h4{font-size:1.06rem;font-weight:700;margin-bottom:10px;line-height:1.4;color:var(--ink)}
.acc p{font-size:.85rem;color:var(--text-dim);margin-bottom:12px}
.acc .ptags{display:flex;flex-wrap:wrap;gap:6px}
.acc .ptags span{font-size:.7rem;padding:3px 9px;background:rgba(139,92,246,0.12);border:1px solid var(--border);border-radius:20px;color:var(--purple-deep)}

/* ---- PROGRAMS ---- */
.prog-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:0 auto;max-width:900px}
.prog{background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:18px;padding:32px 30px;display:flex;flex-direction:column;position:relative;overflow:hidden;transition:transform .35s var(--ease),box-shadow .35s}
.prog:hover{transform:translateY(-6px);box-shadow:var(--glow-purple)}
.prog.feat{border-color:transparent;background:linear-gradient(var(--surface-solid),var(--surface-solid)) padding-box,var(--grad) border-box;box-shadow:0 20px 60px rgba(139,92,246,0.3)}
.prog.feat::after{content:"おすすめ";position:absolute;top:18px;right:-34px;background:var(--grad);color:#fff;font-weight:700;font-size:.74rem;padding:5px 42px;transform:rotate(40deg)}
.prog .ptag{display:inline-block;font-size:.72rem;font-weight:700;color:var(--purple-deep);background:rgba(139,92,246,0.15);border:1px solid var(--border);padding:3px 11px;border-radius:6px;margin-bottom:14px;width:fit-content}
.prog .pname{font-weight:800;font-size:1.4rem;line-height:1.25;margin-bottom:6px;color:var(--ink)}
.prog .psub{font-size:.86rem;color:var(--text-faint);margin-bottom:16px;min-height:2.6em}
.prog .price{display:flex;align-items:baseline;gap:4px}
.prog .price .yen{font-family:"Outfit";font-weight:900;font-size:2.4rem;color:var(--purple-deep);line-height:1}
.prog .price .u{font-size:.86rem;color:var(--text-dim)}
.prog .ptax{font-size:.76rem;color:var(--text-faint);margin-bottom:14px}
.prog .pdiv{height:1px;background:var(--border-soft);margin:14px 0}
.prog ul{list-style:none;flex:1}
.prog ul li{display:flex;gap:8px;font-size:.86rem;color:var(--text-dim);margin-bottom:8px;line-height:1.5}
.prog ul li::before{content:"▸";color:var(--purple);flex:none;margin-top:2px}
.prog ul li strong{color:var(--purple-deep)}

/* ---- CASES CAROUSEL ---- */
.case-carousel{position:relative;margin-bottom:24px;overflow:visible}
.cc-stage{position:relative;padding:8px 56px;overflow:visible}
.cc-viewport{overflow:hidden;padding:6px 2px 10px}
.cc-track{display:flex;gap:18px;transition:transform .6s var(--ease);will-change:transform}
.cc-track .case{flex:0 0 calc((100% - 36px)/3);margin:0;box-sizing:border-box}
.case{background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:18px;padding:32px 30px;transition:transform .35s var(--ease),box-shadow .35s}
.case:hover{transform:translateY(-6px);box-shadow:var(--glow-purple)}
.case .co{font-size:.82rem;color:var(--text-faint);font-weight:600;letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px}
.case .m{display:flex;align-items:baseline;gap:5px;margin-bottom:6px}
.case .m .n{font-family:"Outfit";font-weight:900;font-size:3.2rem;color:var(--purple-deep);line-height:1}
.case .m .u{font-size:1rem;color:var(--text-dim);font-weight:500}
.case .cl{font-size:1rem;color:var(--ink);margin-bottom:16px;font-weight:600}
.case .voice{background:rgba(139,92,246,0.06);border:1px solid var(--border-soft);border-radius:10px;padding:16px 18px;font-size:.9rem;color:var(--text-dim);line-height:1.6}
.case .voice::before{content:"\201C";color:var(--purple);font-family:"Outfit";font-weight:800;font-size:1.6rem;margin-right:4px}
.cc-arrow{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;border:1px solid var(--border);background:var(--surface-solid);color:var(--purple-deep);font-size:1.6rem;line-height:1;font-family:"Outfit";cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(124,58,237,0.16),0 2px 8px rgba(36,27,53,0.06);transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);z-index:3}
.cc-arrow:hover{background:var(--purple);color:#fff;border-color:var(--purple);box-shadow:0 12px 32px rgba(124,58,237,0.28);transform:translateY(-50%) scale(1.04)}
.cc-prev{left:4px}.cc-next{right:4px}
.cc-dots{display:flex;justify-content:center;gap:8px;margin-top:10px}
.cc-dot{width:8px;height:8px;border-radius:50%;background:rgba(124,58,237,0.22);border:none;padding:0;cursor:pointer;transition:all .3s var(--ease)}
.cc-dot.active{background:var(--purple);width:26px;border-radius:4px}
.case-sum{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:16px;overflow:hidden}
.case-sum .it{background:var(--surface-solid);padding:28px 20px;text-align:center}
.case-sum .it .sn{font-family:"Outfit";font-weight:900;font-size:2.4rem;color:var(--purple-deep);line-height:1;display:block;margin-bottom:6px}
.case-sum .it .sn small{font-size:1.1rem}
.case-sum .it .sl{font-size:.84rem;color:var(--text-dim);line-height:1.5}

/* ---- PRICING ---- */
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;overflow:visible}
.pricecard{background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:20px;padding:34px 32px;position:relative;overflow:hidden}
.pricecard.feat{border-color:transparent;background:linear-gradient(var(--surface-solid),var(--surface-solid)) padding-box,var(--grad) border-box;box-shadow:0 20px 60px rgba(139,92,246,0.3)}
.pricecard.feat::after{content:var(--badge-recommended, "おすすめ");position:absolute;top:18px;right:-34px;z-index:2;background:var(--grad);color:#fff;font-family:"Outfit";font-weight:800;font-size:.72rem;letter-spacing:.06em;padding:5px 42px;transform:rotate(40deg);pointer-events:none;white-space:nowrap}
.pricecard .pl{font-size:.8rem;font-weight:700;color:var(--text-faint);letter-spacing:.1em;text-transform:uppercase;margin-bottom:10px}
.pricecard .big{font-family:"Outfit";font-weight:900;font-size:1.6rem;color:var(--purple-deep);margin-bottom:8px}
.pmain{display:flex;align-items:baseline;gap:5px}
.pmain .yen{font-family:"Outfit";font-weight:900;font-size:2.5rem;color:var(--purple-deep);line-height:1}
.pmain .u{font-size:.9rem;color:var(--text-faint)}
.ptax2{font-size:.8rem;color:var(--text-faint);margin-bottom:14px}
.pdiv2{height:1px;background:var(--border-soft);margin:16px 0}
.pricecard ul{list-style:none}
.pricecard ul li{display:flex;gap:8px;font-size:.95rem;color:var(--text-dim);margin-bottom:8px;line-height:1.5}
.pricecard ul li::before{content:"▸";color:var(--purple);flex:none;margin-top:2px}
.pricecard ul li strong{color:var(--purple-deep)}
.price-note{margin-top:18px;padding:14px;background:rgba(139,92,246,0.12);border:1px solid var(--border);border-radius:10px;text-align:center;color:var(--purple-deep);font-weight:700}
.price-sub{margin-bottom:14px;padding-bottom:14px;border-bottom:1px solid var(--border-soft)}
.price-sub .lbl{font-size:.82rem;color:var(--text-faint);margin-bottom:4px}

/* ---- ROI SIM ---- */
.sim{background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-lg)}
.sim-head{background:var(--grad);padding:18px 28px;display:flex;align-items:center;justify-content:space-between}
.sim-head .t{font-family:"Outfit";font-weight:800;font-size:1.2rem;color:#fff}
.sim-head .note{font-size:.82rem;color:rgba(255,255,255,0.9)}
.sim-body{display:grid;grid-template-columns:380px 1fr}
.sim-body>*{min-width:0}
.sim-in{padding:30px;border-right:1px solid var(--border-soft)}
.sim-out{padding:30px}
.sim-g{margin-bottom:24px}
.sim-g:last-child{margin-bottom:0}
.sim-g .gt{font-size:.8rem;font-weight:700;color:var(--text-faint);letter-spacing:.08em;text-transform:uppercase;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--border-soft)}
.sim-f{margin-bottom:18px}
.sim-f:last-child{margin-bottom:0}
.sim-f .fh{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.sim-f .fl{font-size:.9rem;color:var(--text-dim)}
.sim-f .fv{font-family:"Outfit";font-weight:700;font-size:1.15rem;color:var(--purple-deep)}
.slider{-webkit-appearance:none;appearance:none;width:100%;height:5px;border-radius:4px;background:rgba(139,92,246,0.2);outline:none;cursor:pointer}
.slider::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--purple);cursor:pointer;box-shadow:0 0 16px rgba(139,92,246,0.7)}
.slider::-moz-range-thumb{width:20px;height:20px;border:0;border-radius:50%;background:var(--purple);cursor:pointer;box-shadow:0 0 16px rgba(139,92,246,0.7)}
.sim-select{width:100%;padding:11px 14px;border-radius:10px;border:1px solid var(--border);background:var(--surface-solid);color:var(--ink);font-family:"Noto Sans JP",system-ui,sans-serif;font-size:.9rem;font-weight:600;cursor:pointer;outline:none;transition:border-color .25s,box-shadow .25s}
.sim-select:hover,.sim-select:focus{border-color:var(--purple);box-shadow:0 0 0 3px rgba(139,92,246,0.12)}
.roi-main{background:rgba(139,92,246,0.08);border:1px solid var(--border);border-radius:12px;padding:24px;margin-bottom:16px;text-align:center}
.roi-main .rl{font-size:.86rem;color:var(--text-faint);letter-spacing:.06em;text-transform:uppercase;margin-bottom:6px}
.roi-main .rv{font-family:"Outfit";font-weight:900;font-size:3.4rem;color:var(--purple-deep);line-height:1}
.roi-main .rv.neg{color:var(--red)}
.roi-main .rb{font-size:.86rem;color:var(--text-faint);margin-top:6px}
.sim-metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.mc{background:rgba(139,92,246,0.06);border:1px solid var(--border-soft);border-radius:10px;padding:16px}
.mc .ml{font-size:.76rem;color:var(--text-faint);margin-bottom:6px;letter-spacing:.05em;text-transform:uppercase}
.mc .mv{font-family:"Outfit";font-weight:700;font-size:1.7rem;color:var(--ink);line-height:1}
.mc .mu{font-size:.8rem;color:var(--text-faint);margin-left:4px}
#sim-canvas{width:100%;height:180px;display:block}
.legend{display:flex;gap:20px;justify-content:flex-end;margin-top:8px}
.legend .li{display:flex;align-items:center;gap:6px;font-size:.8rem;color:var(--text-faint)}
.legend .dot{width:16px;height:3px;border-radius:2px}

/* ---- FUTURE ---- */
.soon-badge{display:inline-flex;align-items:center;gap:8px;font-family:"Outfit";font-weight:700;font-size:.78rem;letter-spacing:.14em;color:#fff;background:var(--grad);padding:6px 14px;border-radius:8px;margin-bottom:20px;box-shadow:0 6px 24px rgba(139,92,246,0.4)}
.future-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.ucard{background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:14px;overflow:hidden;transition:transform .35s var(--ease),border-color .35s}
.ucard:hover{transform:translateY(-5px);border-color:var(--border)}
.ucard .bar{height:42px;background:var(--grad-3);display:flex;align-items:center;justify-content:center}
.ucard .bar svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.8}
.ucard .body{padding:20px 20px 24px}
.ucard h4{font-size:1rem;font-weight:700;margin-bottom:8px;color:var(--ink)}
.ucard p{font-size:.82rem;color:var(--text-dim)}
.future-banner{margin-top:28px;display:flex;align-items:center;gap:16px;background:linear-gradient(100deg,rgba(139,92,246,0.15),rgba(34,211,238,0.1));border:1px solid var(--border);border-radius:16px;padding:24px 28px}
.future-banner .big{font-family:"Outfit";font-weight:800;color:var(--purple-deep);font-size:1.6rem;white-space:normal}
.future-banner p{font-size:.96rem;color:var(--ink)}

/* ---- START / CTA ---- */
.close-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:20px}
.closecard{background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:18px;padding:36px 34px}
.closecard.main{border-color:transparent;background:linear-gradient(var(--surface-solid),var(--surface-solid)) padding-box,var(--grad) border-box}
.closecard .ct{font-size:.86rem;font-weight:700;color:var(--purple-deep);letter-spacing:.08em;text-transform:uppercase;margin-bottom:16px}
.closecard h3{font-size:1.6rem;font-weight:700;line-height:1.35;margin-bottom:14px;color:var(--ink)}
.trial{display:inline-block;background:var(--grad);color:#fff;font-family:"Outfit";font-weight:900;font-size:1.6rem;padding:8px 22px;border-radius:10px;margin:8px 0 14px;box-shadow:0 8px 30px rgba(139,92,246,0.5)}
.closecard p{font-size:1rem;color:var(--text-dim);line-height:1.7}
.closecard p strong{color:var(--purple-deep)}
.nsteps{list-style:none;counter-reset:st}
.nsteps li{counter-increment:st;display:flex;gap:18px;margin-bottom:18px}
.nsteps li:last-child{margin-bottom:0}
.nsteps li::before{content:counter(st);font-family:"Outfit";font-weight:900;font-size:1.9rem;color:var(--purple-deep);flex:none;width:34px;text-align:center;line-height:1}
.nsteps h4{font-size:1.1rem;font-weight:700;margin-bottom:3px;color:var(--ink)}
.nsteps p{font-size:.88rem;color:var(--text-faint);line-height:1.5}
.contact{background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:14px;padding:26px 30px}
.contact strong{color:var(--ink);display:block;font-size:1.2rem;margin-bottom:8px}
.contact p{font-size:1rem;color:var(--text-dim);line-height:1.85}
.contact a{color:var(--purple-deep);font-weight:600}
.contact a.btn-primary{color:#fff}

/* ---- FOOTER ---- */
footer{position:relative;border-top:1px solid var(--border-soft);padding:36px 0 44px;margin-top:0}
.foot-cta{max-width:var(--maxw);margin:0 auto;padding:0 40px 70px}
.foot-cta h2{font-family:"Noto Sans JP";font-weight:900;font-size:clamp(2.4rem,6.5vw,5rem);line-height:1.05;letter-spacing:-.02em;color:var(--ink);margin-bottom:34px}
.foot-info{max-width:var(--maxw);margin:0 auto;padding:44px 40px 0;border-top:1px solid var(--border-soft);display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:28px}
.foot-info .brand{margin-bottom:12px}
.foot-info p{color:var(--text-faint);font-size:.86rem;max-width:42ch}
.foot-info .cr{color:var(--text-faint);font-size:.8rem;text-align:right}
.foot-nav{display:flex;gap:26px;font-family:"Outfit";font-weight:600;font-size:.84rem;color:var(--text-dim);flex-wrap:wrap}
.foot-nav a:hover{color:var(--purple-deep)}
.foot-right{display:flex;flex-direction:column;align-items:flex-end;gap:16px;text-align:right}
.foot-legal{display:flex;gap:20px;flex-wrap:wrap;justify-content:flex-end;font-family:"Outfit";font-weight:600;font-size:.82rem;color:var(--text-dim)}
.foot-legal a:hover{color:var(--purple-deep)}

/* ---- CONSULT FAB ---- */
.consult-fab{position:fixed;bottom:26px;right:26px;z-index:90;display:inline-flex;align-items:center;gap:10px;padding:14px 22px;border-radius:999px;background:var(--grad);color:#fff;font-family:"Outfit";font-weight:700;font-size:.9rem;box-shadow:0 12px 40px rgba(139,92,246,0.5);transition:transform .25s var(--ease),box-shadow .3s;cursor:pointer;border:none}
.consult-fab:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 18px 54px rgba(139,92,246,0.7)}
.consult-fab svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:2}

/* ---- SCROLL PROGRESS ---- */
.chapnav{position:fixed;left:26px;top:50%;transform:translateY(-50%);z-index:70;display:flex;flex-direction:column;gap:14px;align-items:flex-start;opacity:0;pointer-events:none;transition:opacity .5s var(--ease);max-width:min(180px,28vw)}
.chapnav.show{opacity:1;pointer-events:auto}
.chapnav a{display:flex;align-items:center;gap:9px;font-family:"Outfit";font-weight:600;font-size:.66rem;letter-spacing:.15em;color:var(--text-faint);text-decoration:none;opacity:.55;line-height:1;transition:color .4s var(--ease),opacity .4s var(--ease)}
.chapnav a::before{content:"";flex:none;width:10px;height:1px;background:currentColor;transition:width .4s var(--ease),background .4s var(--ease)}
.chapnav a span{display:inline-block;max-width:0;overflow:hidden;white-space:nowrap;opacity:0;text-shadow:0 0 7px rgba(251,250,255,0.9),0 0 2px rgba(251,250,255,0.95);transition:max-width .45s var(--ease),opacity .35s var(--ease)}
.chapnav:hover a span,.chapnav a.active span{max-width:170px;opacity:1}
.chapnav a:hover{color:var(--purple);opacity:.95}
.chapnav a.active{color:var(--purple);opacity:1;font-weight:800}
.chapnav a.active::before{width:26px;background:var(--purple);box-shadow:0 0 8px rgba(139,92,246,0.6)}

/* ---- SECURITY ---- */
.sec-security{padding:96px 0;position:relative}
.sec-security .wrap{display:flex;flex-direction:column;gap:44px}
.sec-security .col-copy{max-width:none;width:100%}
.sec-security .col-diagram{max-width:640px;width:100%;margin:0 auto}
.sec-kicker{font-family:"Outfit";font-weight:700;font-size:.8rem;letter-spacing:.3em;color:var(--purple-deep);display:flex;align-items:center;gap:10px;margin-bottom:14px}
.sec-kicker::before{content:"";width:26px;height:2px;background:var(--grad);border-radius:2px}
.sec-security h2{font-size:clamp(1.5rem,2.6vw,2rem);font-weight:900;color:var(--ink);line-height:1.55;letter-spacing:.01em}
.sec-security h2 .em{font-weight:900}
.sec-security .sec-lead{margin-top:16px;font-size:.98rem;color:var(--text);width:100%}
.sec-pledge{margin-top:22px;width:100%;box-sizing:border-box;background:var(--surface-solid);border:1px solid var(--glass-border);border-radius:var(--radius);padding:18px 22px;box-shadow:var(--shadow);display:flex;gap:14px;align-items:flex-start}
.sec-pledge .pi{flex:none;width:38px;height:38px;border-radius:12px;background:var(--grad);display:grid;place-items:center;color:#fff}
.sec-pledge b{display:block;color:var(--ink);font-size:.98rem}
.sec-pledge span{font-size:.85rem;color:var(--text-dim)}
.sec-badges{margin-top:20px;display:flex;flex-wrap:nowrap;align-items:center;gap:8px;width:100%}
.sec-badges li{list-style:none;flex:0 0 auto;font-size:.76rem;font-weight:700;color:var(--purple-deep);background:rgba(139,92,246,.08);border:1px solid var(--glass-border);border-radius:999px;padding:7px 12px;white-space:nowrap}
.sec-note{margin-top:14px;font-size:.72rem;color:var(--text-faint);line-height:1.7;width:100%}
.sec-diagram-frame{background:var(--surface-solid);border:1px solid var(--glass-border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:22px 18px 14px}
.sec-diagram{width:100%;height:auto;display:block}

/* ---- LANG SWITCH ---- */
.lang-switch{display:inline-flex;align-items:center;gap:0;border:1px solid var(--border);border-radius:999px;overflow:hidden;background:rgba(255,255,255,0.65);backdrop-filter:blur(10px);flex:none;line-height:1}
.lang-switch button{font-family:"Outfit";font-weight:700;font-size:.72rem;letter-spacing:.08em;padding:8px 12px;border:0;background:transparent;color:var(--text-dim);cursor:pointer;transition:background .25s,color .25s;line-height:1;min-width:2.5rem;display:inline-flex;align-items:center;justify-content:center}
.lang-switch button:hover{color:var(--ink)}
.lang-switch button.active{background:var(--grad);color:#fff}
.nav-actions{display:flex;align-items:center;gap:14px;flex:none}
.mobile-menu .lang-switch{margin-top:0}

/* ---- RESPONSIVE ---- */

/* Large laptop — free space for 3 auth buttons */
@media(max-width:1280px){
  .navlinks{display:none}
  .burger{display:block}
  .chapnav{left:14px}
  .split{gap:40px}
  .scene-tall{height:clamp(340px,48vh,480px)}
  .scene-wide{height:clamp(340px,50vh,500px)}
}

@media(max-width:1200px){
  .chapnav{left:14px}
  .split{gap:40px}
  .scene-tall{height:clamp(340px,48vh,480px)}
  .scene-wide{height:clamp(340px,50vh,500px)}
}

/* Tablet landscape / small desktop */
@media(max-width:980px){
  .navlinks{display:none}
  .nav-actions .nav-auth{display:none}
  .nav-actions .lang-switch{display:inline-flex}
  .nav-actions{gap:10px}
  .lang-switch button{padding:7px 10px;font-size:.68rem;min-width:2.25rem}
  .brand{min-width:0;flex:1}
  .brand img{height:28px;width:auto;max-width:min(140px,46vw)}
  .burger{display:block}
  .nav{gap:12px;padding:14px 24px;padding-left:max(24px, calc(env(safe-area-inset-left, 0px) + 16px));padding-right:max(24px, calc(env(safe-area-inset-right, 0px) + 16px));padding-top:max(12px, env(safe-area-inset-top, 0px))}
  .wrap,.hero-inner,.statband,.foot-cta,.foot-info{padding-left:28px;padding-right:28px}
  .hero{min-height:auto;padding:108px 0 108px}
  .hero-title{font-size:clamp(2.4rem,7vw,4.2rem)}
  .hero-sub{max-width:54ch;margin:22px 0 28px}
  .hero-badge{margin-top:22px}
  .hero-scroll{display:none}
  .hero-actions{gap:12px}
  .btn{padding:14px 24px;font-size:.92rem}
  html[lang="en"] .hero{padding:100px 0 118px}
  html[lang="en"] .hero-title{font-size:clamp(2.5rem,6.4vw,4rem);max-width:16ch}
  html[lang="en"] .hero-sub{font-size:clamp(1.02rem,1.5vw,1.14rem);max-width:52ch}
  .marquee{padding:16px 0}
  .mq-item{font-size:.92rem;padding:0 22px;gap:22px}
  .split{grid-template-columns:1fr;gap:32px}
  .split .col-3d{order:0}
  .diff-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid,.case-sum,.statband{grid-template-columns:repeat(2,1fr)}
  .case-sum .it:last-child{grid-column:1/-1}
  .future-grid{grid-template-columns:repeat(2,1fr)}
  .hear-grid{grid-template-columns:1fr}
  .acc-grid{grid-template-columns:repeat(2,1fr)}
  .prog-grid,.price-grid,.close-grid{grid-template-columns:1fr}
  .sim-body{grid-template-columns:1fr}
  .sim-in{border-right:0;border-bottom:1px solid var(--border-soft)}
  .statband{padding-top:48px;padding-bottom:48px}
  .statband .sb{border-left:0;padding:16px 12px}
  .sb .num{font-size:clamp(2.2rem,5vw,3.2rem)}
  .chapter{padding:72px 0}
  .chap-intro{margin-bottom:44px}
  .chap-word{font-size:clamp(2.6rem,14vw,6.5rem);opacity:.1}
  .chap-title{max-width:min(100%,22ch);font-size:clamp(1.7rem,4vw,2.6rem)}
  html[lang="en"] .chap-word{font-size:clamp(2rem,8vw,4.6rem)}
  html[lang="en"] .chap-title{max-width:min(100%,18ch)}
  .block{margin-top:56px}
  .chapnav{display:none}
  #spiral-canvas{opacity:.5}
  .scene-tall,.scene-wide{height:auto;min-height:320px;aspect-ratio:4/5;max-height:520px}
  .rag-diagram{padding:10px}
  .cc-track .case{flex-basis:calc((100% - 18px)/2)}
  .cc-arrow{width:42px;height:42px;font-size:1.35rem}
  .cc-prev{left:2px}.cc-next{right:2px}
  .cc-stage{padding:6px 48px}
  .af-card{padding:32px 26px}
  .foot-cta h2{font-size:clamp(2rem,6vw,3.4rem)}
  .hcard .q{font-size:2.6rem}
  .consult-fab{bottom:18px;right:18px}
}

/* Tablet portrait */
@media(max-width:768px){
  .hero{padding:96px 0 100px}
  .hero-kicker{margin-bottom:22px;font-size:.7rem;letter-spacing:.12em}
  .hero-title{font-size:clamp(2.2rem,8.2vw,3.4rem)}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{justify-content:center;width:100%;max-width:360px}
  html[lang="en"] .hero{padding:92px 0 108px}
  html[lang="en"] .hero-title{font-size:clamp(2.25rem,7.5vw,3.35rem);max-width:none}
  html[lang="en"] .hero-kicker{font-size:.7rem;letter-spacing:.06em}
  .diff-grid,.acc-grid,.future-grid{grid-template-columns:1fr}
  .prob-grid{grid-template-columns:1fr}
  .pcard,.hcard,.acc,.dcard{padding:24px 22px}
  .scene-tall,.scene-wide{min-height:280px;aspect-ratio:3/4;max-height:440px}
  .sec-diagram-frame{padding:14px 10px 10px}
  .sec-pledge{flex-direction:column;gap:10px}
  .sec-badges{flex-wrap:wrap}
  .price-grid .pricecard{padding:28px 22px}
  .sim{border-radius:16px}
  .case .m .n{font-size:2.6rem}
  .chap-lead,.subtext{font-size:.98rem}
  .subtitle{font-size:clamp(1.35rem,4vw,1.9rem)}
}

/* Mobile */
@media(max-width:560px){
  .wrap,.hero-inner,.statband,.foot-cta,.foot-info{padding-left:20px;padding-right:20px}
  .nav{gap:12px;padding:14px 20px;padding-left:max(20px, calc(env(safe-area-inset-left, 0px) + 14px));padding-right:max(20px, calc(env(safe-area-inset-right, 0px) + 14px));padding-top:max(12px, env(safe-area-inset-top, 0px))}
  .brand img{height:28px}
  .hero{padding:88px 0 92px;min-height:auto}
  .hero-title{font-size:clamp(2rem,9.5vw,2.7rem);margin-bottom:12px}
  .hero-sub{font-size:.98rem;margin:18px 0 24px;line-height:1.7}
  .hero-badge{font-size:.84rem;padding:8px 14px;margin-top:18px;max-width:100%}
  .hero-actions .btn{max-width:none}
  html[lang="en"] .hero{padding:84px 0 96px}
  html[lang="en"] .hero-title{font-size:clamp(2.05rem,9vw,2.75rem);letter-spacing:-.03em}
  html[lang="en"] .hero-sub{font-size:1rem;max-width:none}
  html[lang="en"] .hero-badge{font-size:.84rem}
  html[lang="en"] .mq-item{font-size:.86rem;padding:0 16px;gap:16px}
  .marquee{padding:14px 0}
  .mq-item{font-size:.86rem;padding:0 16px;gap:16px}
  .stat-grid,.case-sum,.statband,.prob-grid,.diff-grid,.future-grid,.acc-grid{grid-template-columns:1fr}
  .sim-metrics{grid-template-columns:1fr}
  .cc-track .case{flex-basis:100%}
  .cc-arrow{display:none}
  .case{padding:26px 22px}
  .case-sum .it{padding:22px 16px}
  .future-banner{flex-direction:column;align-items:flex-start;gap:8px}
  .future-banner .big{white-space:normal}
  .foot-info{flex-direction:column;gap:22px}
  .foot-info .cr{text-align:left}
  .foot-right{align-items:flex-start;text-align:left}
  .foot-legal{justify-content:flex-start}
  .foot-nav{gap:14px 18px;font-size:.8rem}
  .foot-cta{padding-bottom:48px}
  .foot-cta h2{font-size:clamp(1.8rem,9vw,2.6rem);margin-bottom:24px}
  .chapter{padding:56px 0}
  .chap-word{font-size:clamp(2.2rem,18vw,4.2rem)}
  .chap-title{font-size:clamp(1.55rem,6.5vw,2rem)}
  .block{margin-top:44px}
  .scene-tall,.scene-wide{min-height:260px;max-height:380px;border-radius:16px}
  .af-card{padding:26px 20px;border-radius:16px}
  .af-brand{font-size:clamp(2rem,10vw,2.8rem)}
  .hcard .q{font-size:2.2rem}
  .hcard .qt{font-size:1.12rem}
  .prog .pname{font-size:1.2rem}
  .prog .price .yen{font-size:2rem}
  .mobile-menu{padding:max(10px,env(safe-area-inset-top)) 14px max(14px,env(safe-area-inset-bottom))}
  .mobile-menu-panel{padding:14px 14px 16px;border-radius:18px}
  .mobile-menu-links a{font-size:1.02rem;padding:12px 12px}
  .sim-metrics{grid-template-columns:1fr}
  .sim-head{padding:14px 18px;flex-direction:column;align-items:flex-start;gap:6px}
  .sim-head .t{font-size:1.02rem}
  .sim-head .note{font-size:.78rem}
  .sim-in,.sim-out{padding:20px 16px}
  .sim-f .fv{font-size:1.05rem}
  .roi-main{padding:18px 14px}
  .roi-main .rv{font-size:2.55rem}
  .mc{padding:14px}
  .mc .mv{font-size:1.35rem}
  #sim-canvas{height:210px}
  .legend{flex-wrap:wrap;justify-content:flex-start;gap:10px 16px;margin-top:12px}
  .legend .li{font-size:.75rem}
  .sec-security{padding:56px 0}
  .sec-security h2{font-size:clamp(1.35rem,5.5vw,1.75rem)}
  .sec-badges li{font-size:.74rem;padding:6px 12px}
  .note-box,.diff-note{padding:16px 18px;font-size:.95rem}
}

/* Small phones */
@media(max-width:400px){
  .wrap,.hero-inner,.statband,.foot-cta,.foot-info{padding-left:16px;padding-right:16px}
  .nav{padding:12px 20px;padding-left:max(20px, calc(env(safe-area-inset-left, 0px) + 12px));padding-right:max(20px, calc(env(safe-area-inset-right, 0px) + 12px));padding-top:max(10px, env(safe-area-inset-top, 0px))}
  .hero-title{font-size:clamp(1.85rem,9vw,2.35rem)}
  html[lang="en"] .hero-title{font-size:clamp(1.9rem,8.8vw,2.4rem)}
  .btn{padding:13px 18px;font-size:.88rem}
  .sb .num{font-size:2rem}
  .sb-l{font-size:.82rem}
}

@media(max-width:1080px){.consult-fab{bottom:20px;right:20px}}
@media(max-width:900px){.sec-security{padding:64px 0}.sec-security .wrap{gap:28px}}