/* ═══════════════════════════════════════════════════════════
   RAMADANADIPA.COM — Neo-Samurai / Cyberpunk Kyoto
   Sumi black · Paper white · Vermillion aka · Muted gold
   ═══════════════════════════════════════════════════════════ */
:root{
  --sumi:#0b0b0d;
  --sumi-2:#121215;
  --sumi-3:#1a1a1f;
  --paper:#f2ede3;
  --paper-dim:#b9b2a4;
  --hai:#8a8a93;
  --aka:#e23a2e;
  --aka-deep:#a8231a;
  --kin:#c9a227;
  --line:rgba(242,237,227,.12);
  --font-display:"Shippori Mincho B1",serif;
  --font-kanji:"Noto Serif JP",serif;
  --font-ui:"Space Grotesk",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{background:var(--sumi)}
body{
  font-family:var(--font-ui);
  color:var(--paper);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--aka);color:#fff}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}

/* ── 3D canvas + vignette ─────────────────────────── */
#scene3d{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.vignette{position:fixed;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(ellipse at 50% 42%,transparent 45%,rgba(4,4,6,.55) 100%)}

/* ── Film grain ─────────────────────────────────────── */
.grain{position:fixed;inset:0;z-index:45;pointer-events:none;opacity:.055;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/></filter><rect width='160' height='160' filter='url(%23n)' opacity='0.7'/></svg>")}

/* ── Scroll progress (katana edge) ──────────────────── */
#scroll-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:60;
  background:linear-gradient(90deg,var(--aka-deep),var(--aka));
  transform:scaleX(0);transform-origin:left;box-shadow:0 0 12px rgba(226,58,46,.5)}

/* ── Scrollbar ──────────────────────────────────────── */
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:#08080a}
::-webkit-scrollbar-thumb{background:#2b2b33;border:2px solid #08080a;border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:var(--aka)}
:focus-visible{outline:2px solid var(--aka);outline-offset:3px}

/* ── Ghost kanji per section ────────────────────────── */
.section{overflow:hidden}
.sec-ghost{position:absolute;top:.5rem;right:-1.5rem;z-index:-1;
  font-family:var(--font-kanji);font-size:clamp(11rem,24vw,19rem);line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(242,237,227,.055);
  pointer-events:none;user-select:none}

/* ── Hanko stamp ────────────────────────────────────── */
.hanko{position:absolute;right:clamp(2rem,7vw,6rem);bottom:5.5rem;z-index:3;
  width:68px;height:68px;background:var(--aka);border-radius:5px;
  display:grid;place-items:center;transform:rotate(-7deg);
  box-shadow:0 10px 30px rgba(226,58,46,.35), inset 0 0 0 3px rgba(255,255,255,.28)}
.hanko>span{display:block}
.hanko>span>span{writing-mode:vertical-rl;font-family:var(--font-kanji);font-weight:900;
  font-size:1.55rem;color:#fff;letter-spacing:.12em;line-height:1}
@media(max-width:860px){.hanko{display:none}}

/* ── Button slash shine ─────────────────────────────── */
.btn-primary::after{content:"";position:absolute;top:0;left:-80%;width:45%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.38),transparent);
  transform:skewX(-20deg);transition:left .65s ease}
.btn-primary:hover::after{left:135%}

/* ── Drop cap ───────────────────────────────────────── */
.about-body .lead::first-letter{font-family:var(--font-display);font-weight:800;
  font-size:2.7em;float:left;line-height:.88;margin:.05em .14em 0 0;color:var(--aka)}

/* ── Card lift ──────────────────────────────────────── */
.pcard:hover{translate:0 -4px}

/* ── Footer links ───────────────────────────────────── */
.foot-links{display:flex;gap:1.6rem;flex-wrap:wrap}
.foot-links a{font-size:.78rem;letter-spacing:.2em;color:var(--hai);transition:color .3s}
.foot-links a:hover{color:var(--aka)}

/* ── Preloader ────────────────────────────────────── */
#preloader{position:fixed;inset:0;z-index:100;background:#070708;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.4rem;
  transition:opacity .8s ease,visibility .8s}
#preloader.done{opacity:0;visibility:hidden}
.pre-kanji{font-family:var(--font-kanji);font-size:clamp(4rem,12vw,7rem);color:var(--paper);
  text-shadow:0 0 60px rgba(226,58,46,.35)}
.pre-bar{width:min(320px,60vw);height:2px;background:rgba(242,237,227,.14);overflow:hidden}
.pre-bar span{display:block;height:100%;width:0;background:var(--aka)}
.pre-count{font-size:.8rem;letter-spacing:.3em;color:var(--hai)}
.pre-name{font-size:.75rem;letter-spacing:.55em;color:var(--paper-dim);text-indent:.55em}

/* ── Slash transition ─────────────────────────────── */
#slash{position:fixed;top:-20%;left:-30%;width:36%;height:140%;z-index:90;pointer-events:none;
  background:linear-gradient(105deg,transparent 42%,var(--aka) 50%,#fff 50.4%,var(--aka) 51%,transparent 58%);
  opacity:0;filter:blur(1px)}

/* ── Custom cursor ────────────────────────────────── */
#cursorDot,#cursorRing{position:fixed;top:0;left:0;z-index:99;pointer-events:none;border-radius:50%;
  transform:translate(-50%,-50%)}
#cursorDot{width:6px;height:6px;background:var(--aka)}
#cursorRing{width:34px;height:34px;border:1px solid rgba(226,58,46,.55);
  transition:width .25s,height .25s,border-color .25s}
body.cursor-hover #cursorRing{width:58px;height:58px;border-color:var(--aka)}
@media (hover:none),(pointer:coarse){#cursorDot,#cursorRing{display:none}}

/* ── Nav ──────────────────────────────────────────── */
#nav{position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:1.1rem clamp(1.2rem,4vw,3rem);
  background:linear-gradient(to bottom,rgba(7,7,8,.85),transparent);
  backdrop-filter:blur(2px)}
.brand{display:flex;align-items:center;gap:.7rem}
.brand-kanji{font-family:var(--font-kanji);font-size:1.5rem;color:var(--aka);
  border:1px solid rgba(226,58,46,.5);width:2.4rem;height:2.4rem;
  display:grid;place-items:center}
.brand-name{font-weight:700;letter-spacing:.14em;font-size:.8rem;white-space:nowrap}
.brand-name span{color:var(--aka)}
.nav-links{display:flex;gap:2rem;align-items:center}
.nav-links a{font-size:.82rem;letter-spacing:.14em;color:var(--paper-dim);
  position:relative;padding:.3rem 0;transition:color .3s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--aka);transition:width .35s cubic-bezier(.65,0,.35,1)}
.nav-links a:hover{color:var(--paper)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--paper)}
.nav-links a.active::after{width:100%}
/* stronger backdrop for legibility */
#nav{backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.05)}
.nav-cta{color:var(--aka)!important;border:1px solid rgba(226,58,46,.5);padding:.55rem 1.1rem!important}
.nav-cta::after{display:none}
.nav-cta:hover{background:var(--aka);color:#fff!important}
#menuBtn{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:6px;padding:.5rem}
#menuBtn span{display:block;width:26px;height:2px;background:var(--paper);transition:.3s}
#menuBtn.open span:first-child{transform:translateY(8px) rotate(45deg)}
#menuBtn.open span:last-child{transform:translateY(-8px) rotate(-45deg)}
#mobileMenu{position:fixed;inset:0;z-index:49;background:rgba(7,7,8,.97);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.6rem;
  opacity:0;visibility:hidden;transition:.4s}
#mobileMenu.open{opacity:1;visibility:visible}
#mobileMenu a{font-family:var(--font-display);font-size:1.6rem;color:var(--paper)}
@media(max-width:860px){.nav-links{display:none}#menuBtn{display:flex}}

/* ── Layout ───────────────────────────────────────── */
main{position:relative;z-index:2}
.section{max-width:1200px;margin:0 auto;padding:clamp(5rem,10vw,9rem) clamp(1.2rem,4vw,3rem);position:relative;
  scroll-margin-top:70px}
.sec-head{display:flex;align-items:flex-start;gap:1.4rem;margin-bottom:clamp(2.5rem,5vw,4rem);
  border-bottom:1px solid var(--line);padding-bottom:1.7rem}
.sec-index{font-family:var(--font-kanji);font-size:clamp(2.6rem,5vw,3.6rem);color:transparent;
  -webkit-text-stroke:1px rgba(226,58,46,.65);line-height:1;min-width:1.2em}
.sec-kicker{font-size:.75rem;letter-spacing:.34em;color:var(--aka);margin-bottom:.6rem}
.sec-title{font-family:var(--font-display);font-weight:700;
  font-size:clamp(2.2rem,5.5vw,3.6rem);letter-spacing:.01em;line-height:1.05;text-wrap:balance}

/* ── Hero ─────────────────────────────────────────── */
#hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;
  padding:0 clamp(1.2rem,4vw,3rem)}
.hero-inner{max-width:1200px;margin:0 auto;width:100%;position:relative;z-index:3}
.hero-kicker{font-size:.78rem;letter-spacing:.3em;color:var(--paper-dim);margin-bottom:1.6rem;
  display:flex;align-items:center;gap:.8rem}
.hero-kicker .jp{font-family:var(--font-kanji);color:var(--aka);font-size:1.1rem}
.hero-kicker .sep{color:var(--aka)}
.hero-title{font-family:var(--font-display);font-weight:800;
  font-size:clamp(2.2rem,6.5vw,5rem);line-height:1.05;letter-spacing:-.01em;margin-bottom:1.3rem;
  text-wrap:balance}
.hero-rule{display:block;margin:0 0 1.7rem}
.hero-rule>span{display:block!important;width:76px;height:3px;background:var(--aka);
  box-shadow:0 0 16px rgba(226,58,46,.55)}
.hero-title em{font-style:normal;color:var(--aka)}
.hero-title .reveal-line{display:block;overflow:hidden}
.hero-sub{max-width:620px;font-size:clamp(1rem,2vw,1.2rem);line-height:1.75;color:var(--paper-dim);margin-bottom:2.6rem}
.hero-sub i{font-style:normal;color:var(--aka)}
.hero-sub a{color:var(--paper);border-bottom:1px solid var(--aka)}
.hero-cta{display:flex;gap:1.1rem;flex-wrap:wrap;margin-bottom:1rem}
.btn{display:inline-flex;align-items:center;gap:.8rem;padding:1rem 1.9rem;
  font-size:.85rem;letter-spacing:.2em;font-weight:600;position:relative;overflow:hidden;
  transition:translate .3s,box-shadow .3s}
.btn-kanji{font-family:var(--font-kanji);font-size:1.05rem}
.btn-primary{background:var(--aka);color:#fff}
.btn-primary:hover{translate:0 -3px;box-shadow:0 14px 40px rgba(226,58,46,.35)}
.btn-ghost{border:1px solid var(--line);color:var(--paper);background:#141417}
.btn-ghost:hover{border-color:var(--aka);translate:0 -3px}
.hero-kanji-bg{position:absolute;right:-2%;top:50%;transform:translateY(-50%);
  font-family:var(--font-kanji);font-size:clamp(16rem,38vw,34rem);line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(242,237,227,.07);z-index:1;user-select:none}
/* Enso ring — rotating broken circle */
.hero-enso{position:absolute;right:-9rem;top:50%;width:min(42rem,80vw);aspect-ratio:1;z-index:0;
  transform:translateY(-50%) rotate(-24deg);border-radius:50%;pointer-events:none;
  border:1.5px solid rgba(226,58,46,.20);border-top-color:transparent;border-left-color:transparent;
  animation:ensoSpin 70s linear infinite}
@keyframes ensoSpin{to{transform:translateY(-50%) rotate(336deg)}}
@media(max-width:860px){.hero-enso{right:-14rem;opacity:.7}}
.scroll-hint{position:absolute;bottom:2rem;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:.6rem;
  font-size:.68rem;letter-spacing:.4em;color:var(--hai);z-index:3}
.scroll-hint i{display:block;width:1px;height:52px;background:linear-gradient(var(--aka),transparent);
  animation:hintDrop 1.8s ease-in-out infinite}
@keyframes hintDrop{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}
  55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
.side-rail{position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  writing-mode:vertical-rl;font-size:.72rem;letter-spacing:.5em;color:rgba(242,237,227,.35)}
.side-rail.left{left:clamp(.8rem,2.5vw,2rem)}
.side-rail.right{right:clamp(.8rem,2.5vw,2rem)}
@media(max-width:860px){.side-rail{display:none}}

/* ── Marquee ──────────────────────────────────────── */
.marquee{border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  overflow:hidden;position:relative;z-index:2;background:rgba(7,7,8,.6);
  display:flex;flex-direction:column;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent)}
.marquee-track{display:flex;width:max-content;padding:1rem 0;animation:marquee 28s linear infinite}
.marquee-track.reverse{animation-direction:reverse;animation-duration:38s;padding-top:0}
.marquee-track.outline-row span{color:transparent;-webkit-text-stroke:1px rgba(242,237,227,.22)}
.marquee-track.outline-row i{-webkit-text-stroke:0}
.marquee-track span{font-size:.85rem;letter-spacing:.28em;color:var(--paper-dim)}
.marquee-track i{font-style:normal;color:var(--aka);margin:0 1.2rem}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ── About ────────────────────────────────────────── */
.about-grid{display:grid;grid-template-columns:minmax(280px,380px) 1fr;gap:clamp(2rem,5vw,4.5rem);align-items:start}
@media(max-width:900px){.about-grid{grid-template-columns:1fr}}
/* ── About avatar ─────────────────────────────────── */
.about-avatar{position:relative;width:min(320px,72vw);margin:0 auto;transform-style:preserve-3d}
.about-avatar img{width:100%;aspect-ratio:1/1;display:block;
  filter:drop-shadow(0 24px 60px rgba(0,0,0,.5))}
.avatar-ring{position:absolute;inset:-14px;border:1px dashed rgba(226,58,46,.45);border-radius:50%;
  animation:spinSlow 24s linear infinite;pointer-events:none}
@keyframes spinSlow{to{transform:rotate(360deg)}}
.avatar-caption{display:block;text-align:center;margin-top:1.6rem;font-size:.72rem;
  letter-spacing:.3em;color:var(--hai)}
.about-body .lead{font-family:var(--font-display);font-size:clamp(1.15rem,2.4vw,1.5rem);
  line-height:1.65;margin-bottom:1.4rem}
.about-body .lead strong{color:var(--aka);font-weight:700}
.about-body p{color:var(--paper-dim);line-height:1.85;margin-bottom:1.2rem}
.about-body p strong{color:var(--paper)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);margin:2.2rem 0}
.stat{position:relative;background:#121215;padding:1.4rem 1rem;text-align:center;transition:translate .35s ease,background .35s}
.stat::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--aka);
  transform:scaleX(0);transform-origin:left;transition:transform .4s ease}
.stat:hover{background:#17171c;translate:0 -4px}
.stat:hover::before{transform:scaleX(1)}
.stat-num{display:block;font-family:var(--font-display);font-size:clamp(1.6rem,3vw,2.3rem);
  font-weight:700;color:var(--paper)}
.stat-label{display:block;margin-top:.5rem;font-size:.68rem;letter-spacing:.22em;color:var(--hai)}
@media(max-width:640px){.stats{grid-template-columns:repeat(2,1fr)}}
.edu h3{font-size:.78rem;letter-spacing:.34em;color:var(--aka);margin-bottom:1.2rem}
.edu ul{list-style:none}
.edu li{display:grid;grid-template-columns:150px 1fr;gap:1rem;padding:1rem 0;border-top:1px solid var(--line)}
.edu li:last-child{border-bottom:1px solid var(--line)}
.edu li span{font-size:.78rem;color:var(--hai);letter-spacing:.08em}
.edu li strong{display:block;font-weight:600;margin-bottom:.25rem}
.edu li em{font-style:normal;font-size:.85rem;color:var(--paper-dim)}
@media(max-width:640px){.edu li{grid-template-columns:1fr;gap:.3rem}}

/* ── Project cards ────────────────────────────────── */
.featured-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin-bottom:1.4rem}
@media(max-width:960px){.featured-grid{grid-template-columns:1fr}}
.project-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.4rem}
@media(max-width:760px){.project-grid{grid-template-columns:1fr}}
.pcard{position:relative;background:#121215;border:1px solid var(--line);
  padding:2rem;overflow:hidden;transform-style:preserve-3d;
  transition:border-color .4s,background .4s;backdrop-filter:blur(4px)}
.pcard::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;
  background:var(--aka);transform:scaleX(0);transform-origin:left;transition:transform .5s cubic-bezier(.65,0,.35,1)}
.pcard:hover{border-color:rgba(226,58,46,.45);background:rgba(24,24,29,.9)}
.pcard:hover::before{transform:scaleX(1)}
.pcard-no{position:absolute;top:1.2rem;right:1.4rem;font-family:var(--font-kanji);
  font-size:2.2rem;color:transparent;-webkit-text-stroke:1px rgba(242,237,227,.22)}
.pcard-body{position:relative}
.pcard-body::before,.pcard-body::after{position:absolute;font-family:var(--font-kanji);
  font-size:1.9rem;line-height:1;color:var(--aka);opacity:0;pointer-events:none;
  transition:opacity .45s ease,transform .45s ease}
.pcard-body::before{content:"「";top:-.35rem;left:-.15rem;transform:translate(10px,10px)}
.pcard-body::after{content:"」";bottom:-.5rem;right:0;transform:translate(-10px,-10px)}
.pcard:hover .pcard-body::before,.pcard:hover .pcard-body::after{opacity:.9;transform:translate(0,0)}
.pcard h3{font-family:var(--font-display);font-size:1.5rem;font-weight:700;margin-bottom:.4rem;transform:translateZ(30px)}
.pcard-featured h3{font-size:1.8rem}
.pcard-role{font-size:.72rem;letter-spacing:.24em;color:var(--aka);margin-bottom:1rem;text-transform:uppercase}
.pcard p{color:var(--paper-dim);font-size:.94rem;line-height:1.75;margin-bottom:1.3rem}
.tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.4rem}
.tags span{font-size:.7rem;letter-spacing:.1em;background:#1d1d23;border:1px solid transparent;
  padding:.35rem .7rem;border-radius:20px;color:var(--paper-dim);transition:.3s}
.tags span:hover{border-color:var(--aka);color:var(--paper)}
.pcard-links{display:flex;gap:1.4rem}
.pcard-links a{font-size:.82rem;letter-spacing:.16em;color:var(--paper);
  border-bottom:1px solid var(--aka);padding-bottom:2px;transition:color .3s}
.pcard-links a:hover{color:var(--aka)}

/* ── Timeline ─────────────────────────────────────── */
.timeline{position:relative;max-width:820px}
.tline{position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--line);--draw:0}
.tline::after{content:"";position:absolute;top:0;left:0;width:100%;height:calc(var(--draw)*100%);background:var(--aka);box-shadow:0 0 12px rgba(226,58,46,.6)}
.titem{position:relative;padding:0 0 2.8rem 3rem}
.titem:last-child{padding-bottom:0}
.titem::before{content:"";position:absolute;left:0;top:8px;width:16px;height:16px;
  background:var(--sumi);border:2px solid var(--aka);transform:rotate(45deg);transition:.3s}
.titem:hover::before{background:var(--aka);box-shadow:0 0 18px rgba(226,58,46,.7)}
.tdate{font-size:.72rem;letter-spacing:.26em;color:var(--aka)}
.titem h3{font-family:var(--font-display);font-size:1.35rem;margin:.5rem 0 .2rem}
.torg{font-size:.85rem;color:var(--paper-dim);letter-spacing:.06em;margin-bottom:.7rem}
.titem p{color:var(--hai);font-size:.93rem;line-height:1.75;max-width:640px}

/* ── Skills ───────────────────────────────────────── */
.skill-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
@media(max-width:1024px){.skill-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.skill-grid{grid-template-columns:1fr}}
.skill{background:#121215;padding:1.8rem;position:relative;overflow:hidden;transition:background .4s,translate .35s ease}
.skill::after{content:"技";position:absolute;right:.6rem;bottom:-.4rem;font-family:var(--font-kanji);
  font-size:4.4rem;color:transparent;-webkit-text-stroke:1px rgba(226,58,46,.25);line-height:1}
.skill:hover{background:#17171c;translate:0 -4px}
.skill h3{font-family:var(--font-display);font-size:1.05rem;margin-bottom:.9rem;color:var(--paper)}
.skill h3::before{content:"";display:inline-block;width:8px;height:8px;background:var(--aka);
  transform:rotate(45deg);margin-right:.7rem}
.skill p{font-size:.82rem;line-height:2;color:var(--hai)}

/* ── Awards ───────────────────────────────────────── */
.award-list{display:flex;flex-direction:column;gap:1.1rem;max-width:900px}
.award{display:flex;align-items:center;gap:1.8rem;background:#121215;
  border:1px solid var(--line);padding:1.6rem 2rem;transition:border-color .4s,background .4s,translate .4s;transform-style:preserve-3d}
a.award:hover{border-color:rgba(201,162,39,.6);translate:10px 0;background:#15151a}
.award-year{font-family:var(--font-mono);font-size:.78rem;color:var(--kin);min-width:4.5rem;letter-spacing:.08em;
  background:#1d1b14;border:1px solid rgba(201,162,39,.45);border-radius:6px;padding:.45rem .7rem;text-align:center}
.award h3{font-family:var(--font-display);font-size:1.25rem;margin-bottom:.3rem}
.award p{font-size:.88rem;color:var(--paper-dim)}
.award-arrow{margin-left:auto;font-size:1.4rem;color:var(--aka)}

/* ── Paper ────────────────────────────────────────── */
.paper{max-width:900px;background:#121215;border:1px solid var(--line);
  border-left:3px solid var(--aka);padding:clamp(1.8rem,4vw,3rem);transform-style:preserve-3d;
  transition:border-color .4s,translate .4s}
.paper:hover{border-color:rgba(226,58,46,.5);border-left-color:var(--aka);translate:0 -4px}
.paper-venue{font-size:.72rem;letter-spacing:.26em;color:var(--aka);margin-bottom:1.1rem}
.paper h3{font-family:var(--font-display);font-size:clamp(1.3rem,3vw,1.9rem);line-height:1.4;margin-bottom:1rem}
.paper-authors{font-size:.9rem;color:var(--paper-dim);margin-bottom:1.2rem}
.paper-abstract{color:var(--hai);line-height:1.85;font-size:.95rem;margin-bottom:1.6rem}
.paper-links{display:flex;gap:1.6rem}
.paper-links a{font-size:.85rem;letter-spacing:.16em;border-bottom:1px solid var(--aka);padding-bottom:2px}
.paper-links a:hover{color:var(--aka)}

/* ── Contact ──────────────────────────────────────── */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(2rem,5vw,4rem);align-items:start}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr}}
.contact-lead{font-family:var(--font-display);font-size:clamp(1.3rem,3vw,1.9rem);line-height:1.5;margin-bottom:1.8rem}
.contact-mail{display:inline-block;font-family:var(--font-display);font-weight:700;
  font-size:clamp(1.2rem,3.4vw,2.1rem);color:var(--paper);margin-bottom:1rem;
  background:linear-gradient(var(--aka),var(--aka)) left bottom/0 2px no-repeat;
  transition:background-size .45s cubic-bezier(.65,0,.35,1),color .3s}
.contact-mail:hover{background-size:100% 2px;color:var(--aka)}
.contact-phone{color:var(--hai);font-size:.9rem;letter-spacing:.08em}
.contact-links{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.contact-links a{position:relative;display:flex;align-items:center;gap:1.1rem;
  background:#121215;padding:1.2rem 1.3rem;overflow:hidden;transition:background .4s}
.contact-links a::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--aka);transform:scaleY(0);transform-origin:top;transition:transform .4s ease}
.contact-links a:hover{background:#17171c}
.contact-links a:hover::before{transform:scaleY(1)}
.cicon{width:44px;height:44px;flex:0 0 44px;display:grid;place-items:center;
  background:#f4f1ea;border-radius:9px;
  box-shadow:0 6px 18px rgba(0,0,0,.4), inset 0 0 0 1px rgba(255,255,255,.6);
  transition:transform .35s ease}
.contact-links a:hover .cicon{transform:translateY(-3px) rotate(-4deg)}
.cicon img{width:24px;height:24px}
.ctext{display:flex;flex-direction:column;gap:.3rem;min-width:0}
.ctext b{font-size:.88rem;letter-spacing:.2em;font-weight:700;color:var(--paper)}
.ctext small{font-size:.7rem;letter-spacing:.06em;color:var(--hai);font-family:var(--font-mono);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.carrow{margin-left:auto;color:var(--aka);font-size:1.15rem;flex:0 0 auto;
  transform:translateX(-8px);opacity:0;transition:transform .35s ease,opacity .35s}
.contact-links a:hover .carrow{transform:translateX(0);opacity:1}

/* ── Footer ───────────────────────────────────────── */
#footer{border-top:1px solid var(--line);padding:3rem clamp(1.2rem,4vw,3rem);
  display:flex;align-items:center;justify-content:space-between;gap:1.5rem;flex-wrap:wrap;
  max-width:1200px;margin:0 auto;position:relative;z-index:2}
.foot-kanji{font-family:var(--font-kanji);font-size:2rem;color:var(--aka)}
.foot-mark{flex:0 0 100%;text-align:center;font-family:var(--font-display);font-weight:800;
  letter-spacing:.05em;font-size:clamp(2.4rem,10vw,7.5rem);line-height:1;white-space:nowrap;
  color:transparent;-webkit-text-stroke:1px rgba(242,237,227,.13);
  margin-bottom:1.5rem;user-select:none;transition:-webkit-text-stroke .5s}
.foot-mark:hover{-webkit-text-stroke:1px rgba(226,58,46,.55)}
#footer p{font-size:.8rem;color:var(--hai);letter-spacing:.06em}
#footer a{font-size:.8rem;letter-spacing:.2em;color:var(--paper-dim);border-bottom:1px solid var(--aka)}
#footer a:hover{color:var(--aka)}

/* ── Back to top ────────────────────────────────── */
#toTop{position:fixed;right:1.4rem;bottom:1.4rem;z-index:55;width:52px;height:52px;border-radius:50%;
  background:#121215;border:1px solid var(--line);display:grid;place-items:center;padding:0;
  opacity:0;pointer-events:none;transform:translateY(12px);transition:opacity .4s,transform .4s,border-color .3s}
#toTop.show{opacity:1;pointer-events:auto;transform:none}
#toTop:hover{border-color:var(--aka)}
#toTop svg{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}
#toTop .tt-bg{fill:none;stroke:rgba(255,255,255,.08);stroke-width:3}
#toTop .tt-fg{fill:none;stroke:var(--aka);stroke-width:3;stroke-linecap:round}
#toTop>span{position:relative;color:var(--paper);font-size:1.05rem;line-height:1}

/* ── Hide native cursor on fine pointers ──────────── */
@media (hover:hover) and (pointer:fine){
  body,body a,body button,body [data-hover]{cursor:none}
}

/* ── Mobile perf + layout ─────────────────────────── */
@media(max-width:768px){
  .grain{display:none}
  #nav{backdrop-filter:none;-webkit-backdrop-filter:none}
}
@media(max-width:560px){
  .contact-links{grid-template-columns:1fr}
  .award{flex-wrap:wrap;gap:1rem;padding:1.3rem 1.4rem}
  .award-arrow{margin-left:0}
}
#footer{overflow:hidden}

/* ── Reveal base states (JS animates in) ──────────── */
.reveal-line{display:block;overflow:hidden}
.reveal-line>span{display:block}

/* ── Reduced motion ───────────────────────────────── */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}

/* ── Inline icons ─────────────────────────────────── */
.ico{width:1em;height:1em;flex:none;vertical-align:-.14em}
#toTop>span{display:inline-grid;place-items:center}
.marquee-track i .ico{width:.72em;height:.72em;vertical-align:-.06em}