/* ==========================================================
   株式会社Matti コーポレートサイト
   ========================================================== */
:root{
  --white:#FFFFFF;
  --gray-50:#F3F5F8;
  --gray-200:#DDE2EA;
  --gray-600:#5A6270;
  --navy:#0F1B3D;
  --navy-2:#1B2A57;
  --pink:#FF3D8B;
  --pink-l:#FFE3EF;
  --cyan:#19C3E6;
  --cyan-l:#DDF7FC;
  --lime:#C6FF3D;
  --grad:linear-gradient(90deg,var(--pink),var(--cyan));
  --radius:4px;
  --maxw:1160px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
body{
  margin:0;background:var(--white);color:var(--navy);
  font-family:"Noto Sans JP",sans-serif;font-weight:400;
  font-size:16px;line-height:1.9;letter-spacing:.04em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.header{
  position:fixed;inset:0 0 auto 0;z-index:50;height:var(--header-h);
  display:flex;align-items:center;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:box-shadow .3s;
}
.header.is-scrolled{box-shadow:0 1px 0 var(--gray-200)}
.header__inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.logo{display:flex;align-items:center;text-decoration:none}
.logo img{height:34px;width:auto}
.nav{display:flex;align-items:center;gap:28px}
.nav a{font-size:13px;font-weight:700;letter-spacing:.14em;text-decoration:none;color:var(--navy)}
.nav a:not(.btn){position:relative}
.nav a:not(.btn)::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--grad);transform:scaleX(0);transition:transform .25s;transform-origin:left}
.nav a:not(.btn):hover::after{transform:scaleX(1)}
.nav .btn{padding:10px 20px;font-size:13px}
.menu-btn{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;position:relative}
.menu-btn span{position:absolute;left:11px;right:11px;height:2px;background:var(--navy);transition:.3s}
.menu-btn span:nth-child(1){top:16px}.menu-btn span:nth-child(2){top:26px}
.menu-open .menu-btn span:nth-child(1){top:21px;transform:rotate(45deg)}
.menu-open .menu-btn span:nth-child(2){top:21px;transform:rotate(-45deg)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:12px;
  padding:16px 34px;border:0;border-radius:var(--radius);cursor:pointer;
  background:var(--grad);color:var(--navy);
  font-family:inherit;font-weight:900;font-size:15px;letter-spacing:.12em;text-decoration:none;
  position:relative;transition:transform .2s, box-shadow .2s;
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
}
.btn::after{content:"→";font-weight:700}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,61,139,.35)}
.btn--navy{background:var(--navy);color:var(--white)}
.btn--navy:hover{box-shadow:0 8px 24px rgba(15,27,61,.3)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;background:var(--white);color:var(--navy);
  min-height:640px;height:min(100vh,900px);display:flex;align-items:center;
}
.hero__grid{
  position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(var(--gray-200) 1px,transparent 1px) 0 0/56px 56px,
    linear-gradient(90deg,var(--gray-200) 1px,transparent 1px) 0 0/56px 56px;
  opacity:.55;
  -webkit-mask-image:radial-gradient(ellipse at 20% 50%,#000 10%,transparent 65%);mask-image:radial-gradient(ellipse at 20% 50%,#000 10%,transparent 65%);
}
.hero__visual{
  position:absolute;top:var(--header-h);right:0;bottom:0;width:60%;
  clip-path:polygon(14% 0,100% 0,100% 100%,0 100%);
  background:var(--navy);
}
.hero__visual img{width:100%;height:100%;object-fit:cover;object-position:28% center}
.hero__visual::after{ /* scanline */
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 4px);
}
.hero__edge{ /* gradient line along the angled edge */
  position:absolute;top:var(--header-h);bottom:0;right:0;width:60%;pointer-events:none;
  background:var(--grad);
  clip-path:polygon(14% 0,calc(14% + 4px) 0,4px 100%,0 100%);
}
/* HUD corners */
.hud{position:absolute;top:calc(var(--header-h) + 20px);right:24px;bottom:24px;width:calc(60% * .86 - 48px);pointer-events:none;color:var(--white)}
.hud i{position:absolute;width:28px;height:28px;border-color:rgba(255,255,255,.85);border-style:solid;border-width:0}
.hud i:nth-child(1){top:0;left:0;border-top-width:2px;border-left-width:2px}
.hud i:nth-child(2){top:0;right:0;border-top-width:2px;border-right-width:2px}
.hud i:nth-child(3){bottom:0;left:0;border-bottom-width:2px;border-left-width:2px}
.hud i:nth-child(4){bottom:0;right:0;border-bottom-width:2px;border-right-width:2px}
.hud__tag{position:absolute;font-size:11px;letter-spacing:.24em;font-weight:700;text-shadow:0 1px 6px rgba(15,27,61,.6)}
.hud__tag--tl{top:8px;left:40px}
.hud__tag--br{bottom:6px;right:40px;display:flex;align-items:center;gap:8px}
.hud__tag--br::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--pink);box-shadow:0 0 8px var(--pink);animation:blink 1.6s infinite}
@keyframes blink{50%{opacity:.25}}

.hero__content{position:relative;z-index:2;padding-top:var(--header-h);width:100%}
.hero__inner{max-width:44%}
@media (min-width:761px){
  .hero__content.container,.header__inner.container,.page-head .container,.policy.container{max-width:none;margin:0;padding-left:clamp(32px,5vw,96px);padding-right:clamp(24px,3vw,48px)}
}
.hero__label{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:700;letter-spacing:.3em;margin-bottom:28px;color:var(--gray-600)}
.hero__label::before{content:"";width:8px;height:8px;background:var(--lime);outline:1px solid var(--navy)}
.hero__copy{
  margin:0 0 28px;font-weight:900;line-height:1.35;letter-spacing:.02em;
  font-size:clamp(28px,3.3vw,54px);
}
.hero__copy .line{display:block}
.hero__copy .line:first-child{text-indent:-.5em}
.glitch{position:relative;display:inline-block}
.glitch::before,.glitch::after{
  content:attr(data-text);position:absolute;left:0;top:0;width:100%;
  opacity:0;pointer-events:none;text-indent:0;
}
.glitch::before{color:var(--pink);animation:glitchA .7s steps(2) .5s 1}
.glitch::after{color:var(--cyan);animation:glitchB .7s steps(2) .5s 1}
@keyframes glitchA{
  0%{opacity:.9;transform:translate(-4px,0);clip-path:inset(10% 0 60% 0)}
  30%{transform:translate(3px,0);clip-path:inset(50% 0 20% 0)}
  60%{transform:translate(-2px,0);clip-path:inset(20% 0 55% 0)}
  100%{opacity:0;transform:none}
}
@keyframes glitchB{
  0%{opacity:.9;transform:translate(4px,0);clip-path:inset(60% 0 10% 0)}
  30%{transform:translate(-3px,0);clip-path:inset(15% 0 60% 0)}
  60%{transform:translate(2px,0);clip-path:inset(45% 0 25% 0)}
  100%{opacity:0;transform:none}
}
.hero__bar{width:120px;height:3px;background:var(--grad);margin-bottom:28px}
.hero__lead{margin:0 0 40px;font-size:16px;line-height:2.1;font-weight:500;color:var(--navy)}
.hero__scroll{
  position:absolute;left:clamp(32px,5vw,96px);bottom:28px;z-index:2;color:var(--gray-600);
  font-size:10px;letter-spacing:.3em;display:flex;align-items:center;gap:12px;font-weight:700
}
.hero__scroll::after{content:"";width:48px;height:1px;background:var(--navy);animation:scrollx 2s infinite;transform-origin:left}
@keyframes scrollx{0%{transform:scaleX(0)}50%{transform:scaleX(1)}100%{transform:scaleX(1);opacity:0}}

/* ---------- Section common ---------- */
.section{padding:128px 0;position:relative}
.section--gray{background:var(--gray-50)}
.sec-head{margin-bottom:56px}
.sec-label{
  display:flex;align-items:center;gap:14px;
  font-size:13px;font-weight:700;letter-spacing:.3em;color:var(--gray-600);margin-bottom:16px
}
.sec-label b{
  font-weight:900;color:var(--navy);background:var(--lime);
  padding:2px 8px;letter-spacing:.1em;font-size:12px;
}
.sec-label::after{content:"";flex:0 0 48px;height:1px;background:var(--gray-200)}
.sec-title{margin:0;font-size:clamp(26px,3.4vw,40px);font-weight:900;line-height:1.5;letter-spacing:.03em}
.sec-title .grad-u{background:linear-gradient(transparent 72%,var(--pink-l) 72%)}
.text{color:var(--navy);max-width:40em}
.text p{margin:0 0 1.2em}
.muted{color:var(--gray-600)}

/* ---------- About ---------- */
.about__grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.flow{list-style:none;margin:72px 0 0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.flow::before{
  content:"";position:absolute;left:10%;right:10%;top:38px;height:2px;background:var(--grad);
}
.flow li{position:relative;text-align:center;padding:0 8px}
.flow__node{
  width:76px;height:76px;margin:0 auto 16px;position:relative;background:var(--white);
  display:grid;place-items:center;font-size:12px;font-weight:900;letter-spacing:.1em;color:var(--navy);
  background:var(--navy);
  clip-path:polygon(25% 0,75% 0,100% 50%,75% 100%,25% 100%,0 50%);
}
.flow__node::before{content:"";position:absolute;inset:2px;background:var(--white);clip-path:inherit}
.flow__node span{position:relative}
.flow li:last-child .flow__node{background:var(--grad)}
.flow li:last-child .flow__node::before{display:none}
.flow__jp{font-weight:900;font-size:17px;display:block}
.flow__en{font-size:11px;letter-spacing:.2em;color:var(--gray-600)}

/* ---------- Service ---------- */
.svc-group + .svc-group{margin-top:72px}
.svc-group__title{display:flex;align-items:center;gap:12px;font-size:14px;font-weight:900;letter-spacing:.24em;margin:0 0 24px}
.svc-group__title::before{content:"";width:18px;height:2px;background:var(--grad)}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc-grid--2{grid-template-columns:repeat(2,1fr)}
.card{
  position:relative;background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius);
  padding:32px 28px;transition:border-color .25s, transform .25s, box-shadow .25s;
}
.card::before,.card::after{content:"";position:absolute;width:14px;height:14px;border:solid var(--cyan);border-width:0;transition:.25s}
.card::before{top:-1px;left:-1px;border-top-width:2px;border-left-width:2px}
.card::after{bottom:-1px;right:-1px;border-bottom-width:2px;border-right-width:2px;border-color:var(--pink)}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(15,27,61,.08)}
.card:hover::before,.card:hover::after{width:28px;height:28px}
.card__no{font-size:11px;font-weight:700;letter-spacing:.2em;color:var(--gray-600)}
.card__en{font-size:18px;font-weight:900;letter-spacing:.08em;margin:6px 0 2px}
.card__jp{font-size:13px;font-weight:700;color:var(--pink);margin:0 0 14px;letter-spacing:.08em}
.card__text{margin:0;font-size:14px;line-height:1.9;color:var(--gray-600)}
.card--sub{background:var(--gray-50);border-style:dashed}
.section--gray .card--sub{background:var(--white)}

/* ---------- Strength ---------- */
.str-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.str{padding:40px 36px;border:1px solid var(--gray-200);border-radius:var(--radius);background:var(--white);position:relative}
.str__no{font-size:44px;font-weight:900;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:18px;display:block}
.str__title{font-size:21px;font-weight:900;margin:0 0 14px;line-height:1.6}
.str__text{margin:0;font-size:15px;color:var(--gray-600);line-height:2}
.str--main{
  grid-column:1/-1;background:var(--navy);color:var(--white);border:0;overflow:hidden;
  display:grid;grid-template-columns:auto 1fr;gap:12px 48px;padding:56px 56px;
}
.str--main::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(rgba(25,195,230,.1) 1px,transparent 1px) 0 0/40px 40px,
    linear-gradient(90deg,rgba(25,195,230,.1) 1px,transparent 1px) 0 0/40px 40px;
  -webkit-mask-image:linear-gradient(90deg,transparent 30%,#000);mask-image:linear-gradient(90deg,transparent 30%,#000);
}
.str--main .str__no{font-size:88px;margin:0;grid-row:1/4}
.str--main .str__badge{display:inline-block;justify-self:start;background:var(--lime);color:var(--navy);font-size:11px;font-weight:900;letter-spacing:.2em;padding:4px 10px}
.str--main .str__title{font-size:clamp(22px,2.6vw,30px);margin:0;position:relative}
.str--main .str__text{color:rgba(255,255,255,.82);position:relative;max-width:44em}

/* ---------- Case ---------- */
.case{
  display:grid;grid-template-columns:1fr 1.2fr;border:1px solid var(--gray-200);border-radius:var(--radius);overflow:hidden;background:var(--white)
}
.case__visual{
  position:relative;min-height:320px;background:var(--navy);color:var(--white);
  display:flex;flex-direction:column;justify-content:flex-end;padding:36px;overflow:hidden
}
.case__visual::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 20% 20%,rgba(255,61,139,.55),transparent 55%),
    radial-gradient(circle at 85% 70%,rgba(25,195,230,.5),transparent 55%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 4px);
}
.case__visual > *{position:relative}
.case__big{font-size:64px;font-weight:900;line-height:1;letter-spacing:.02em}
.case__cap{font-size:12px;letter-spacing:.24em;font-weight:700;margin-top:10px;opacity:.85}
.case__body{padding:44px 44px}
.case__tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--navy);background:var(--cyan-l);padding:4px 10px;margin:0 6px 8px 0}
.case__title{font-size:22px;font-weight:900;margin:14px 0 16px;line-height:1.6}
.case__text{margin:0 0 24px;color:var(--gray-600);font-size:15px}
.case__scope{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.case__scope li{font-size:12px;font-weight:700;border:1px solid var(--navy);padding:4px 12px;letter-spacing:.08em}

/* ---------- Company ---------- */
.company{width:100%;border-collapse:collapse;max-width:880px}
.company th,.company td{text-align:left;padding:22px 0;border-bottom:1px solid var(--gray-200);vertical-align:top;font-size:15px}
.company th{width:180px;font-weight:700;color:var(--gray-600);letter-spacing:.12em;font-size:14px}
.company tr:first-child th,.company tr:first-child td{border-top:2px solid var(--navy)}

/* ---------- Contact ---------- */
.contact{background:var(--navy);color:var(--white);position:relative;overflow:hidden}
.contact::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 0% 0%,rgba(255,61,139,.25),transparent 40%),
    radial-gradient(circle at 100% 100%,rgba(25,195,230,.25),transparent 40%),
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px) 0 0/48px 48px,
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px) 0 0/48px 48px;
}
.contact .container{position:relative}
.contact .sec-label{color:rgba(255,255,255,.7)}
.contact .sec-label::after{background:rgba(255,255,255,.2)}
.contact__grid{display:grid;grid-template-columns:1fr 1.3fr;gap:64px;align-items:start}
.contact__lead{color:rgba(255,255,255,.82);margin:24px 0 0}
.form{background:var(--white);color:var(--navy);border-radius:var(--radius);padding:44px 40px}
.field{margin-bottom:22px}
.field label,.field .label{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700;margin-bottom:8px}
.req,.opt{font-size:10px;font-weight:700;padding:1px 6px;letter-spacing:.1em}
.req{background:var(--pink);color:var(--white)}
.opt{background:var(--gray-200);color:var(--gray-600)}
.input,.select,.textarea{
  width:100%;font-family:inherit;font-size:16px;color:var(--navy);
  border:1px solid var(--gray-200);background:var(--gray-50);border-radius:var(--radius);
  padding:13px 14px;transition:border-color .2s, box-shadow .2s, background .2s;
}
.textarea{min-height:160px;resize:vertical;line-height:1.8}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--cyan);background:var(--white);box-shadow:0 0 0 3px var(--cyan-l)}
.select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--navy) 50%),linear-gradient(135deg,var(--navy) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 15px) 50%;background-size:5px 5px;background-repeat:no-repeat}
.agree{display:flex;align-items:flex-start;gap:10px;font-size:14px;margin:8px 0 28px}
.agree input{margin-top:6px;width:18px;height:18px;accent-color:var(--pink)}
.agree a{color:var(--navy);font-weight:700}
.hp{position:absolute;left:-9999px}
.form .btn{width:100%;justify-content:center}
.form__msg{margin:16px 0 0;font-size:14px;font-weight:700;display:none}
.form__msg.is-ok{display:block;color:#0a8a5a}
.form__msg.is-err{display:block;color:var(--pink)}
.form.is-sent .form__fields{display:none}
.form__done{display:none;text-align:center;padding:32px 0}
.form.is-sent .form__done{display:block}
.form__done h3{font-size:22px;margin:0 0 12px}

/* ---------- Footer ---------- */
.footer{background:#0A1330;color:rgba(255,255,255,.7);padding:40px 0;font-size:12px}
.footer__inner{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.footer a{color:rgba(255,255,255,.85);text-decoration:none}
.footer a:hover{color:var(--white)}
.footer .logo img{height:28px}

/* ---------- Reveal ---------- */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .8s ease, transform .8s ease}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- Privacy page ---------- */
.page-head{background:var(--navy);color:var(--white);padding:calc(var(--header-h) + 64px) 0 56px;position:relative;overflow:hidden}
.page-head::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 90% 0%,rgba(255,61,139,.35),transparent 45%),radial-gradient(circle at 70% 100%,rgba(25,195,230,.3),transparent 45%)}
.page-head .container{position:relative}
.page-head .sec-label{color:rgba(255,255,255,.7)}
.page-head .sec-label::after{background:rgba(255,255,255,.2)}
.policy > *{max-width:820px}
.policy h2{font-size:18px;font-weight:900;margin:48px 0 12px;display:flex;gap:12px;align-items:center}
.policy h2 span{font-size:12px;color:var(--navy);background:var(--lime);padding:2px 8px}
.policy p,.policy li{color:var(--navy);font-size:15px}
.policy ul{padding-left:1.4em}
.policy .date{margin-top:56px;color:var(--gray-600);font-size:14px}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .about__grid,.contact__grid,.case{grid-template-columns:1fr}
  .about__grid{gap:24px}
  .contact__grid{gap:40px}
  .str--main{grid-template-columns:1fr;padding:44px 32px}
  .str--main .str__no{grid-row:auto;font-size:64px}
}
@media (max-width:760px){
  :root{--header-h:64px}
  body{font-size:15px}
  .section{padding:88px 0}
  .container{padding:0 20px}
  .nav{
    position:fixed;inset:0;background:var(--white);flex-direction:column;justify-content:center;gap:28px;
    opacity:0;pointer-events:none;transition:opacity .3s;
  }
  .nav a{color:var(--navy);font-size:16px}
  .menu-open .nav{opacity:1;pointer-events:auto}
  .menu-btn{display:block;z-index:2}
  .menu-open .logo{position:relative;z-index:2}
  .hero{display:block;height:auto;min-height:0;padding-top:var(--header-h)}
  .hero__visual,.hero__edge{position:relative;top:auto;width:100%;height:58svh;min-height:320px;clip-path:polygon(0 0,100% 0,100% 88%,0 100%)}
  .hero__edge{display:none}
  .hero__visual img{object-position:41% 30%}
  .hero__content{padding-top:32px;padding-bottom:64px}
  .hero__inner{max-width:none}
  .hero__copy{font-size:clamp(26px,7.6vw,40px)}
  .hero__scroll{display:none}
  .hero__label{margin-bottom:16px}
  .hero__lead{margin-bottom:32px;font-size:14px}
  .hud{top:calc(var(--header-h) + 12px);right:12px;left:12px;width:auto;bottom:auto;height:calc(58svh * .8 - 20px)}
  .hud__tag--tl{display:none}
  .svc-grid,.svc-grid--2,.str-list{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr;gap:0;margin-top:48px}
  .flow::before{left:37px;right:auto;top:38px;bottom:38px;width:2px;height:auto;background:linear-gradient(var(--pink),var(--cyan))}
  .flow li{display:flex;align-items:center;gap:20px;text-align:left;padding:0 0 16px}
  .flow__node{margin:0;flex:0 0 76px}
  .str{padding:32px 24px}
  .case__body{padding:32px 24px}
  .case__visual{min-height:200px;padding:28px 24px}
  .case__big{font-size:44px}
  .company th,.company td{display:block;width:auto;padding:0;border:0}
  .company th{padding-top:18px}
  .company td{padding:4px 0 18px;border-bottom:1px solid var(--gray-200)}
  .company tr:first-child th{border-top:2px solid var(--navy)}
  .company tr:first-child td{border-top:0}
  .form{padding:32px 20px}
  .footer__inner{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}