/* ========== RESET & BASE ========== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:'Noto Sans JP','Hiragino Kaku Gothic ProN',sans-serif;
  background:#fff;color:#111;
  line-height:2.2;font-weight:200;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{text-decoration:none;color:#111;transition:opacity .3s}
a:hover{opacity:.4}
ul{list-style:none}

.narrow{max-width:720px;margin:0 auto;padding:0 40px}
@media(max-width:768px){.narrow{padding:0 24px}}

/* ========== HEADER ========== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:20px 0;background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  transition:padding .3s;
}
.header.scrolled{padding:14px 0;border-bottom:1px solid #eee}
.header-inner{max-width:720px;margin:0 auto;padding:0 40px;display:flex;align-items:center;justify-content:space-between}
.logo{font-size:.9rem;font-weight:800;letter-spacing:.15em;color:#111}

.nav-list{display:flex;gap:28px}
.nav-link{font-size:.75rem;font-weight:300;color:#111;letter-spacing:.08em;opacity:.5;transition:opacity .3s}
.nav-link:hover{opacity:1}

.hamburger{display:none;width:24px;height:14px;background:none;border:none;cursor:pointer;position:relative;z-index:110}
.hamburger span{display:block;width:100%;height:1px;background:#111;position:absolute;left:0;transition:all .3s}
.hamburger span:nth-child(1){top:0}
.hamburger span:nth-child(2){bottom:0}
.hamburger.active span:nth-child(1){top:50%;transform:translateY(-50%) rotate(45deg)}
.hamburger.active span:nth-child(2){bottom:50%;transform:translateY(50%) rotate(-45deg)}
@media(max-width:640px){
  .hamburger{display:block}
  .nav{position:fixed;inset:0;background:#fff;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .4s}
  .nav.open{opacity:1;visibility:visible}
  .nav-list{flex-direction:column;align-items:center;gap:24px}
  .nav-link{font-size:1rem;opacity:.7}
  .header-inner{padding:0 24px}
}

/* ========== HERO ========== */
.hero{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  padding:200px 40px;
}
.hero-inner{max-width:720px;width:100%}
.hero-text{
  font-size:clamp(1.4rem,3.5vw,2rem);
  font-weight:200;
  line-height:2.4;
  letter-spacing:.08em;
  color:#111;
}
@media(max-width:768px){.hero{padding:160px 24px}}

/* ========== SECTIONS ========== */
.section{padding:200px 0}
@media(max-width:768px){.section{padding:120px 0}}

.heading{
  font-size:.8rem;font-weight:800;
  letter-spacing:.2em;color:#111;
}
.divider{
  width:32px;height:1px;background:#111;
  margin:20px 0 48px;
}

.body-text{
  font-size:.9rem;font-weight:200;
  color:#111;line-height:2.4;
  margin-bottom:24px;
  letter-spacing:.02em;
}
.body-text:last-of-type{margin-bottom:0}

/* ========== WORK ========== */
.work-item{
  margin-bottom:80px;padding-bottom:80px;
  border-bottom:1px solid #eee;
}
.work-item:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}
.work-title{font-size:1rem;font-weight:800;letter-spacing:.08em;margin-bottom:4px}
.work-meta{font-size:.72rem;font-weight:300;color:#999;letter-spacing:.06em;margin-bottom:20px}
.work-desc{font-size:.88rem;font-weight:200;color:#111;line-height:2.4;letter-spacing:.02em}

/* ========== PROCESS ========== */
.process-list{margin-top:0}
.process-item{
  display:flex;gap:32px;
  margin-bottom:56px;padding-bottom:56px;
  border-bottom:1px solid #eee;
}
.process-item:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}
.process-num{
  font-size:.75rem;font-weight:800;color:#111;
  flex-shrink:0;padding-top:4px;opacity:.3;
}
.process-title{font-size:.9rem;font-weight:800;letter-spacing:.08em;margin-bottom:8px}
.process-desc{font-size:.85rem;font-weight:200;color:#111;line-height:2.4;letter-spacing:.02em}

/* ========== PROFILE ========== */
.profile-table{display:flex;flex-direction:column}
.profile-row{display:flex;padding:16px 0;border-bottom:1px solid #eee}
.profile-row:last-child{border:none}
.profile-row dt{
  width:80px;flex-shrink:0;
  font-size:.75rem;font-weight:800;color:#111;
  letter-spacing:.06em;padding-top:2px;
}
.profile-row dd{font-size:.85rem;font-weight:200;color:#111;letter-spacing:.02em}
@media(max-width:640px){
  .profile-row{flex-direction:column;gap:2px}
  .profile-row dt{width:auto}
}

/* ========== CONTACT ========== */
.contact-info{margin-top:48px}
.contact-line{
  display:flex;gap:24px;
  font-size:.85rem;font-weight:200;
  padding:12px 0;border-bottom:1px solid #eee;
  letter-spacing:.02em;
}
.contact-line:last-child{border:none}
.contact-label{
  width:60px;flex-shrink:0;
  font-weight:800;font-size:.72rem;
  letter-spacing:.06em;padding-top:2px;
}
@media(max-width:640px){
  .contact-line{flex-direction:column;gap:2px}
  .contact-label{width:auto}
}

/* ========== FOOTER ========== */
.footer{
  padding:80px 0 40px;
  text-align:center;
}
.footer p{font-size:.68rem;font-weight:300;color:#999;letter-spacing:.06em}

/* ========== ANIMATIONS ========== */
[data-anim]{opacity:0;transform:translateY(16px);transition:opacity 1s cubic-bezier(0.16,1,0.3,1),transform 1s cubic-bezier(0.16,1,0.3,1)}
[data-anim].visible{opacity:1;transform:translateY(0)}