:root{--ink:#0b1220;--muted:#64748b;--primary:#7c3aed;--primary2:#2563eb;--soft:#f5f7fb;--line:#e6eaf1;--white:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:"Inter","Noto Sans JP",sans-serif;color:var(--ink);overflow-x:hidden}body.lang-en{font-family:"Inter",sans-serif}h1,h2,h3{letter-spacing:-.035em}.fw-800{font-weight:800}.navbar{padding:18px 0;transition:.35s;background:transparent}.navbar.scrolled{background:rgba(8,13,25,.9);backdrop-filter:blur(18px);padding:10px 0;box-shadow:0 8px 30px #0002}.navbar-brand{letter-spacing:.12em}.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary2));margin-right:8px}.brand-dot{color:#a78bfa}.nav-link{color:#ffffffc7!important;font-size:.9rem}.nav-link:hover,.nav-link.active{color:#fff!important}.hero-section{position:relative;min-height:100vh;background:radial-gradient(circle at 75% 30%,#29336a 0,#10162b 34%,#070b15 72%);color:#fff;overflow:hidden}.hero-grid{position:absolute;inset:0;background-image:linear-gradient(#ffffff08 1px,transparent 1px),linear-gradient(90deg,#ffffff08 1px,transparent 1px);background-size:70px 70px;mask-image:linear-gradient(to bottom,#000,transparent 85%)}.hero-section:after{content:"";position:absolute;width:550px;height:550px;right:-200px;top:12%;background:#7c3aed33;filter:blur(100px);border-radius:50%}.eyebrow,.section-kicker{font-size:.75rem;letter-spacing:.18em;font-weight:700;color:#a78bfa}.hero-lead{max-width:680px;font-size:1.15rem;line-height:1.9;color:#cbd5e1}.gradient-text{background:linear-gradient(90deg,#c4b5fd,#60a5fa);-webkit-background-clip:text;background-clip:text;color:transparent}.btn-primary{border:0;background:linear-gradient(135deg,var(--primary),var(--primary2));box-shadow:0 12px 35px #7c3aed40}.btn-glass{border:1px solid #ffffff30;color:#fff;background:#ffffff0b;backdrop-filter:blur(10px)}.btn-glass:hover{background:#fff;color:var(--ink)}.hero-facts{border-top:1px solid #ffffff1a;padding-top:22px}.hero-facts div{display:flex;flex-direction:column}.hero-facts strong{font-size:1.25rem}.hero-facts small{color:#94a3b8;margin-top:3px}.hero-visual{height:600px;position:relative;display:grid;place-items:center}.portrait-card{width:330px;height:450px;border:1px solid #ffffff22;background:linear-gradient(145deg,#ffffff15,#ffffff05);border-radius:28px;padding:12px;transform:rotate(5deg);box-shadow:0 40px 100px #0008;position:relative;z-index:2}.portrait-placeholder{height:100%;border-radius:20px;background:linear-gradient(145deg,#1e293b,#111827);display:grid;place-items:center;overflow:hidden;position:relative}.portrait-placeholder:before{content:"";position:absolute;inset:0;background:url("https://images.unsplash.com/photo-1544005313-94ddf0286df2?auto=format&fit=crop&w=900&q=85") center/cover;opacity:.75;mix-blend-mode:luminosity}.portrait-placeholder i{font-size:5rem;color:#fff;z-index:1;opacity:.8}.portrait-caption{position:absolute;bottom:28px;left:28px;right:28px;background:#07101ddd;backdrop-filter:blur(12px);padding:13px;border-radius:14px;display:flex;align-items:center;gap:8px;font-size:.75rem}.status-dot{width:7px;height:7px;border-radius:50%;background:#34d399;box-shadow:0 0 12px #34d399}.floating-card{position:absolute;z-index:4;background:#fff;color:var(--ink);border-radius:14px;padding:13px 16px;display:flex;align-items:center;gap:9px;box-shadow:0 20px 45px #0004;font-size:.82rem;font-weight:700;animation:float 5s ease-in-out infinite}.floating-card i{color:var(--primary);font-size:1.1rem}.fc-one{top:22%;left:0}.fc-two{bottom:20%;right:0;animation-delay:-2s}.visual-orbit{position:absolute;border:1px solid #ffffff18;border-radius:50%}.orbit-1{width:550px;height:550px}.orbit-2{width:420px;height:420px;border-style:dashed}.scroll-indicator{position:absolute;bottom:25px;left:50%;width:25px;height:42px;border:1px solid #fff6;border-radius:20px;z-index:3}.scroll-indicator span{display:block;width:3px;height:7px;background:#fff;border-radius:5px;margin:8px auto;animation:scroll 1.7s infinite}.section-pad{padding:110px 0}.bg-light-soft{background:var(--soft)}.section-heading{max-width:760px}.section-heading h2{font-size:clamp(2rem,4vw,3.4rem);font-weight:800;margin:15px 0}.section-heading p{color:var(--muted);font-size:1.05rem;line-height:1.9}.section-heading.light p{color:#94a3b8}.about-card{background:#fff;border:1px solid var(--line);border-radius:26px;padding:45px;position:relative;overflow:hidden}.quote-mark{position:absolute;right:25px;top:-20px;font-size:12rem;line-height:1;color:#7c3aed0a;font-family:serif}.about-card .lead{line-height:1.9;color:#334155}.mini-info{display:flex;gap:13px;padding:15px;border-radius:15px;background:var(--soft);height:100%}.mini-info i{font-size:1.3rem;color:var(--primary)}.mini-info small,.mini-info strong{display:block}.mini-info small{font-size:.72rem;color:var(--muted);margin-bottom:3px}.mini-info strong{font-size:.86rem}.image-card{border-radius:26px;overflow:hidden;position:relative;min-height:350px}.image-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}.image-card:after{content:"";position:absolute;inset:40% 0 0;background:linear-gradient(transparent,#000b)}.image-overlay{position:absolute;bottom:25px;left:25px;right:25px;z-index:2;color:#fff;display:flex;justify-content:space-between;font-weight:700}.timeline{position:relative}.timeline:before{content:"";position:absolute;left:11px;top:0;bottom:0;width:1px;background:var(--line)}.timeline-item{position:relative;padding-left:45px;margin-bottom:60px}.timeline-dot{position:absolute;left:5px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 6px #ede9fe}.timeline-date{font-size:.78rem;letter-spacing:.1em;color:var(--primary);font-weight:800;margin-bottom:12px}.timeline-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:0 12px 35px #0f172a08}.timeline-card h3{margin:7px 0;font-size:1.5rem}.role-label,.small-label{font-size:.7rem;letter-spacing:.14em;font-weight:800;color:var(--primary)}.timeline-icon{font-size:2rem;color:#c4b5fd}.timeline-card li{margin:10px 0;color:#475569;line-height:1.7}.bg-dark{background:#080d18!important}.skill-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.skill-card,.software-panel{background:#ffffff09;border:1px solid #ffffff12;border-radius:20px;padding:25px;transition:.3s}.skill-card:hover{transform:translateY(-5px);background:#ffffff0d}.skill-card i{font-size:1.8rem;color:#a78bfa}.skill-card h3{font-size:1.15rem;margin:18px 0 8px}.skill-card p{color:#94a3b8;margin:0;line-height:1.7}.software-panel{padding:28px}.tool-row{display:grid;grid-template-columns:28px 1fr auto;align-items:center;gap:10px;padding:17px 0;border-bottom:1px solid #ffffff0e;font-size:.88rem}.tool-row:last-child{border:0}.tool-row i{color:#a78bfa}.tool-row strong{font-size:.68rem;color:#94a3b8}.edu-list{background:#fff;border:1px solid var(--line);border-radius:24px;padding:10px 30px}.edu-item{display:grid;grid-template-columns:110px 1fr;gap:20px;padding:25px 0;border-bottom:1px solid var(--line)}.edu-item:last-child{border:0}.edu-year{font-size:.78rem;font-weight:800;color:var(--primary)}.edu-item h3{font-size:1rem;margin:0 0 6px}.edu-item p{color:var(--muted);font-size:.88rem;margin:0}.cert-card{height:100%;background:#0b1220;color:#fff;border-radius:24px;padding:35px}.cert-row{padding:18px 0;border-bottom:1px solid #ffffff16;display:grid;grid-template-columns:25px 1fr;column-gap:10px}.cert-row i{color:#a78bfa}.cert-row span{font-weight:700}.cert-row small{grid-column:2;color:#94a3b8;margin-top:3px}.language-bars{background:#fff;border:1px solid var(--line);border-radius:24px;padding:35px}.lang-bar{margin-bottom:27px}.lang-bar:last-child{margin-bottom:0}.lang-bar>div:first-child{display:flex;justify-content:space-between;margin-bottom:9px;font-size:.9rem}.lang-bar strong{font-size:.72rem;color:var(--primary)}.progress{height:8px;background:#eef2f7}.progress-bar{background:linear-gradient(90deg,var(--primary),var(--primary2));border-radius:20px}.gallery-card{height:380px;border-radius:22px;overflow:hidden;position:relative}.gallery-card img{width:100%;height:100%;object-fit:cover;transition:.7s}.gallery-card:hover img{transform:scale(1.08)}.gallery-card:after{content:"";position:absolute;inset:40% 0 0;background:linear-gradient(transparent,#000c)}.gallery-card>div{position:absolute;z-index:2;bottom:24px;left:24px;color:#fff;display:flex;align-items:center;gap:12px}.gallery-card h3{margin:0;font-size:1.2rem}.contact-section{background:linear-gradient(135deg,#111827,#0b1220);padding:90px 0;color:#fff}.contact-box{border:1px solid #ffffff16;border-radius:30px;padding:55px;background:radial-gradient(circle at 90% 10%,#7c3aed22,transparent 35%)}.contact-box h2{font-size:clamp(2rem,4vw,3.2rem);margin:15px 0}.contact-box p{color:#94a3b8;line-height:1.8}.contact-link{display:flex;align-items:center;gap:13px;color:#e2e8f0;text-decoration:none;padding:15px 0;border-bottom:1px solid #ffffff13;font-size:.9rem}.contact-link i{color:#a78bfa}.social-btn{width:42px;height:42px;border:1px solid #ffffff20;border-radius:50%;display:grid;place-items:center;color:#fff;text-decoration:none;transition:.25s}.social-btn:hover{background:#fff;color:var(--ink)}.footer{background:#050912;color:#fff}.back-top{position:fixed;right:22px;bottom:22px;width:45px;height:45px;border:0;border-radius:50%;background:#111827;color:#fff;box-shadow:0 10px 25px #0003;display:none;z-index:20}.back-top.show{display:block;animation:fadeUp .25s}.reveal{opacity:0;transform:translateY(25px);transition:opacity .8s ease,transform .8s ease}.reveal.visible{opacity:1;transform:none}.delay-1{transition-delay:.12s}.delay-2{transition-delay:.24s}@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}@keyframes scroll{0%{opacity:0;transform:translateY(0)}30%{opacity:1}100%{opacity:0;transform:translateY(14px)}}@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}@media(max-width:991.98px){.navbar{background:#080d18e8}.hero-section{min-height:auto}.hero-section .min-vh-100{min-height:auto!important;padding-top:130px!important;padding-bottom:90px!important}.hero-lead{font-size:1rem}.section-pad{padding:80px 0}.about-card{padding:30px}.skill-grid{grid-template-columns:1fr}.contact-box{padding:35px}.hero-facts{gap:22px!important}}@media(max-width:575.98px){.display-2{font-size:2.8rem}.about-card{padding:24px}.edu-list{padding:10px 20px}.edu-item{grid-template-columns:1fr;gap:6px}.contact-box{padding:28px}.section-pad{padding:70px 0}}

/* =========================================
   STICKY NAVBAR + FIXED NAV LINKS
   ========================================= */

#mainNav {
  position: sticky !important;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1050 !important;
  background: #0b1220;
  transition: background-color 0.3s ease,
              box-shadow 0.3s ease,
              padding 0.3s ease;
}

#mainNav.scrolled {
  background: rgba(11, 18, 32, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.20);
}

/* Navbar links */
#mainNav .nav-link {
  position: relative;
  display: inline-block;
  color: rgba(255, 255, 255, 0.75) !important;
  transition: color 0.25s ease;
}

#mainNav .nav-link:hover,
#mainNav .nav-link.active {
  color: #ffffff !important;
}

/* Active link underline */
#mainNav .nav-link::after {
  content: "";
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  bottom: 0;
  height: 2px;
  background: #6c63ff;
  border-radius: 10px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}

#mainNav .nav-link:hover::after,
#mainNav .nav-link.active::after {
  transform: scaleX(1);
}

/* Keep navbar above all hero/content elements */
#mainNav,
#mainNav .container,
#mainNav .navbar-collapse {
  position: relative;
  z-index: 1050;
}

/* Mobile menu */
#mainNav .navbar-collapse {
  background: transparent;
}

#mainNav .navbar-toggler {
  position: relative;
  z-index: 1060;
}

/* Prevent sections from going underneath navbar */
html {
  scroll-padding-top: 90px;
}

section {
  scroll-margin-top: 90px;
}

/* =========================================
   MOBILE
   ========================================= */

@media (max-width: 991.98px) {
  #mainNav .navbar-collapse {
    padding: 1rem 0;
  }

  #mainNav .nav-link {
    padding: 0.65rem 0 !important;
  }

  #mainNav .nav-link::after {
    left: 0;
    right: auto;
    width: 30px;
  }
}