/* ============ KENSEI BRAKE — shared styles ============ */
:root{
  --paper:#f3efe6; --paper2:#eae4d6; --ink:#141414; --ink2:#1c1c1c; --ink3:#242424;
  --sumi:#3f3a33; --sumi-l:#6b645a; --aka:#c8362b; --aka-deep:#9c241c;
  --line-d:rgba(243,239,230,.16); --line-l:rgba(20,20,20,.16);
  --disp:'Shippori Mincho',serif; --body:'Zen Kaku Gothic New',sans-serif;
  --jp:'Noto Sans JP',sans-serif; --jpserif:'Noto Serif JP',serif;
  --ease:cubic-bezier(.22,.8,.24,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:var(--paper);color:var(--ink);line-height:1.7;overflow-x:hidden}
img,svg{display:block}a{color:inherit;text-decoration:none}ul{list-style:none}
::selection{background:var(--aka);color:#fff}
.wrap{max-width:1240px;margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.dark{background:var(--ink);color:var(--paper)}
.section{padding:clamp(70px,9vw,120px) 0}
#pads,#shoes,#discs,#quality,#fitment{scroll-margin-top:90px}
/* washi grain */
body::after{content:"";position:fixed;inset:0;z-index:2000;pointer-events:none;opacity:.05;mix-blend-mode:multiply;
 background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)'/%3E%3C/svg%3E")}
/* type */
.kicker{display:flex;align-items:center;gap:14px;font-family:var(--jp);font-size:12px;letter-spacing:.34em;text-transform:uppercase;color:var(--sumi-l)}
.kicker::before{content:"";width:34px;height:2px;background:var(--aka)}
.dark .kicker{color:rgba(243,239,230,.55)}
h1,h2,h3,h4{font-family:var(--disp);font-weight:700;line-height:1.15}
.h2{font-size:clamp(30px,4.4vw,52px);margin:16px 0 14px}
.lede{max-width:56ch;color:var(--sumi);font-size:clamp(15px,1.3vw,17px)}
.dark .lede{color:rgba(243,239,230,.72)}
.jp-line{font-family:var(--jpserif);letter-spacing:.22em;color:var(--aka);font-size:14px}
.v-text{writing-mode:vertical-rl;font-family:var(--jpserif);letter-spacing:.3em}
/* hanko + buttons */
.hanko{display:inline-grid;place-items:center;background:var(--aka);color:#fff;font-family:var(--jpserif);font-weight:700;padding:.5em .38em;line-height:1.15;writing-mode:vertical-rl;border-radius:3px;box-shadow:0 2px 10px rgba(156,36,28,.35);font-size:15px;letter-spacing:.12em;user-select:none}
.hanko.small{font-size:11px;padding:.4em .3em}
.btn{position:relative;display:inline-flex;align-items:center;gap:12px;padding:16px 30px;border:1px solid var(--ink);font-family:var(--jp);font-size:12px;letter-spacing:.28em;text-transform:uppercase;background:transparent;color:var(--ink);cursor:pointer;overflow:hidden;isolation:isolate;transition:color .35s var(--ease)}
.btn::before{content:"";position:absolute;inset:0;background:var(--aka);z-index:-1;transform:translateX(-101%);transition:transform .45s var(--ease)}
.btn:hover::before{transform:translateX(0)}
.btn:hover{color:#fff;border-color:var(--aka)}
.btn.solid{background:var(--ink);color:var(--paper)}
.dark .btn{border-color:var(--paper);color:var(--paper)}
.dark .btn:hover,.btn.solid:hover{border-color:var(--aka)}
.btn .arr{transition:transform .35s var(--ease)}
.btn:hover .arr{transform:translateX(6px)}
/* reveal */
.rv{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.in{opacity:1;transform:none}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}.d4{transition-delay:.4s}
/* nav */
nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:20px 0;transition:background .4s,box-shadow .4s,padding .3s}
nav.scrolled{background:rgba(20,20,20,.94);backdrop-filter:blur(8px);box-shadow:0 1px 0 var(--line-d);padding:12px 0}
.nav-in{max-width:1360px;margin:0 auto;padding:0 clamp(20px,3vw,40px);display:flex;align-items:center;gap:36px}
.logo{display:flex;align-items:center;gap:12px;color:var(--paper)}
.logo-word{font-family:var(--disp);font-weight:800;font-size:22px;letter-spacing:.08em;line-height:1}
.logo-word em{font-style:normal;color:var(--aka);font-size:12px;letter-spacing:.42em;display:block;margin-top:3px;font-family:var(--jp)}
.nav-links{margin-left:auto;display:flex;gap:28px}
.nav-links a{font-family:var(--jp);font-size:11px;letter-spacing:.26em;text-transform:uppercase;color:rgba(243,239,230,.75);position:relative;padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--aka);transform:scaleX(0);transform-origin:right;transition:transform .35s var(--ease)}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);transform-origin:left}
.nav-cta{font-family:var(--jp);font-size:11px;letter-spacing:.24em;color:#fff;background:var(--aka);padding:11px 20px;transition:background .3s}
.nav-cta:hover{background:var(--aka-deep)}
.burger{display:none;margin-left:auto;background:none;border:0;cursor:pointer;width:40px;height:34px;position:relative;z-index:1101}
.burger span{position:absolute;left:6px;right:6px;height:2px;background:var(--paper);transition:.35s var(--ease)}
.burger span:nth-child(1){top:9px}.burger span:nth-child(2){top:16px}.burger span:nth-child(3){top:23px}
body.menu-open .burger span:nth-child(1){top:16px;transform:rotate(45deg)}
body.menu-open .burger span:nth-child(2){opacity:0}
body.menu-open .burger span:nth-child(3){top:16px;transform:rotate(-45deg)}
.m-menu{position:fixed;inset:0;background:var(--ink);z-index:1100;display:flex;flex-direction:column;justify-content:center;padding:40px;clip-path:inset(0 0 100% 0);transition:clip-path .6s var(--ease);visibility:hidden}
body.menu-open .m-menu{clip-path:inset(0);visibility:visible}
.m-menu a{font-family:var(--disp);font-size:clamp(26px,7vw,38px);color:var(--paper);padding:10px 0;border-bottom:1px solid var(--line-d);display:flex;gap:16px;align-items:baseline}
.m-menu a i{font-style:normal;font-family:var(--jpserif);color:var(--aka);font-size:14px}
/* page header (sub-pages) */
.page-head{background:var(--ink);color:var(--paper);padding:160px 0 70px;position:relative;overflow:hidden}
.page-head .ghost{position:absolute;right:2%;top:8%;font-family:var(--jpserif);font-size:clamp(120px,18vw,260px);line-height:1;color:transparent;-webkit-text-stroke:1px rgba(243,239,230,.1);writing-mode:vertical-rl;pointer-events:none}
.page-head h1{font-size:clamp(36px,5.4vw,64px);margin-top:16px}
.crumbs{font-family:var(--jp);font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:rgba(243,239,230,.5);display:flex;gap:12px}
.crumbs .sep{color:var(--aka)}
/* hero (home) */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;background:var(--ink);color:var(--paper);overflow:hidden}
.hero-bg-kanji{position:absolute;top:4%;left:-2%;font-family:var(--jpserif);font-size:clamp(200px,28vw,400px);line-height:1;color:transparent;-webkit-text-stroke:1px rgba(243,239,230,.09);writing-mode:vertical-rl;user-select:none;pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(30px,5vw,80px);align-items:center;padding:140px 0 90px;width:100%}
.hero h1{font-size:clamp(44px,7vw,92px);line-height:1.05;margin-top:22px}
.hero h1 .aka{color:var(--aka)}
.stroke-line{display:block;overflow:hidden}
.stroke-line span{display:block;transform:translateY(110%);animation:rise 1s var(--ease) forwards}
.stroke-line:nth-child(2) span{animation-delay:.15s}
@keyframes rise{to{transform:none}}
.hero-sub{margin:26px 0 34px;display:flex;flex-direction:column;gap:10px}
.hero-sub .jp-line{font-size:clamp(14px,1.5vw,18px);color:rgba(243,239,230,.85)}
.hero-sub p{color:rgba(243,239,230,.66);max-width:52ch}
.hero-ctas{display:flex;gap:18px;flex-wrap:wrap}
.rotor-stage{position:relative;width:min(420px,86%);aspect-ratio:1;margin:0 auto}
.rotor{width:100%;height:100%;animation:spin 40s linear infinite;filter:drop-shadow(0 24px 50px rgba(0,0,0,.55));object-fit:contain}
@keyframes spin{to{transform:rotate(360deg)}}
.caliper-tag{position:absolute;left:-12%;bottom:6%;background:var(--aka);color:#fff;font-family:var(--jp);font-size:11px;letter-spacing:.3em;padding:10px 16px;writing-mode:vertical-rl}
.hero-scroll{position:absolute;left:clamp(20px,4vw,48px);bottom:26px;display:flex;align-items:center;gap:14px;font-family:var(--jp);font-size:10px;letter-spacing:.4em;color:rgba(243,239,230,.5)}
.hero-scroll::after{content:"";width:1px;height:52px;background:linear-gradient(var(--aka),transparent)}
/* marquee */
.marquee{background:var(--aka);color:#fff;overflow:hidden;padding:14px 0}
.marquee-track{display:flex;width:max-content;animation:mq 30s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee span{font-family:var(--jp);font-size:12px;letter-spacing:.34em;text-transform:uppercase;padding:0 26px;white-space:nowrap}
.marquee span::after{content:" 剣";font-family:var(--jpserif)}
@keyframes mq{to{transform:translateX(-50%)}}
/* layout helpers */
.two-col{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(40px,6vw,100px)}
.cta-band{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-top:30px}
.cta-band .btn{margin-left:auto}
/* kanji stack + pull quote */
.kanji-stack{display:flex;flex-direction:column}
.kanji-stack div{display:flex;align-items:baseline;gap:20px;border-top:1px solid var(--line-l);padding:18px 0}
.kanji-stack .k{font-family:var(--jpserif);font-size:clamp(38px,4.4vw,58px);line-height:1}
.kanji-stack .r{font-family:var(--disp);font-size:14px;letter-spacing:.3em;text-transform:uppercase;color:var(--aka)}
.kanji-stack .m{font-size:13px;color:var(--sumi-l);margin-left:auto;text-align:right}
.pull{margin:34px 0;padding:26px 30px;border-left:3px solid var(--aka);background:var(--paper2);font-family:var(--jpserif);font-size:clamp(17px,1.8vw,22px);letter-spacing:.06em;line-height:1.8}
.pull small{display:block;margin-top:10px;font-family:var(--jp);font-size:11px;letter-spacing:.3em;color:var(--sumi-l)}
/* product cards (home) */
.prod-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.p-card{background:var(--ink2);border:1px solid var(--line-d);padding:32px 28px;position:relative;display:flex;flex-direction:column;gap:14px;transition:transform .5s var(--ease),border-color .4s,box-shadow .5s}
.p-card:hover{transform:translateY(-8px);border-color:rgba(200,54,43,.6);box-shadow:0 30px 60px rgba(0,0,0,.45)}
.p-card .num{position:absolute;top:20px;right:24px;font-family:var(--disp);color:rgba(243,239,230,.35);letter-spacing:.2em}
.p-visual{height:150px;display:grid;place-items:center;border-bottom:1px solid var(--line-d)}
.p-visual svg{width:100%;height:100%;overflow:visible}
.ln{fill:none;stroke:rgba(243,239,230,.8);stroke-width:2;stroke-linejoin:round;transition:stroke .4s}
.ln2{fill:none;stroke:rgba(243,239,230,.35);stroke-width:1.4}
.p-card:hover .ln{stroke:var(--aka)}
.p-card h3{font-size:22px}
.jp-name{font-family:var(--jp);font-size:12px;letter-spacing:.3em;color:var(--aka)}
.p-card p{font-size:14px;color:rgba(243,239,230,.62);flex:1}
.p-link{font-family:var(--jp);font-size:11px;letter-spacing:.3em;color:var(--aka);display:inline-flex;gap:10px;align-items:center}
/* product detail (products page) */
.p-detail{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(30px,5vw,80px);align-items:center;padding:clamp(50px,7vw,90px) 0;border-top:1px solid var(--line-l)}
.p-detail:first-of-type{border-top:0}
.p-detail.flip .p-visualbox{order:2}
.p-visualbox{background:var(--ink);border:1px solid var(--line-d);padding:clamp(24px,3vw,50px);position:relative}
.p-visualbox svg{width:100%;height:auto}
.p-visualbox .hanko{position:absolute;top:18px;right:18px}
.p-visualbox .cap{color:rgba(243,239,230,.5);font-family:var(--jp);font-size:11px;letter-spacing:.3em;margin-top:14px}
.feat-list{display:grid;grid-template-columns:1fr 1fr;gap:10px 24px;margin:20px 0}
.feat-list li{font-family:var(--jp);font-size:12.5px;letter-spacing:.1em;color:var(--sumi);display:flex;gap:10px;align-items:center}
.feat-list li::before{content:"";width:6px;height:6px;background:var(--aka);flex:none}
/* spec table */
.spec-table{width:100%;border-collapse:collapse;font-size:14px}
.spec-table caption{text-align:left;font-family:var(--jp);font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:var(--aka);padding-bottom:14px}
.spec-table th,.spec-table td{padding:13px 12px;text-align:left;border-bottom:1px solid var(--line-l);vertical-align:top}
.spec-table th{font-family:var(--jp);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--sumi-l);width:34%}
.spec-table td{color:var(--sumi)}
/* principles */
.prin-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(40px,6vw,110px)}
.prin-left{position:sticky;top:110px;align-self:start}
.prin-item{border-top:1px solid var(--line-d);padding:40px 0;display:grid;grid-template-columns:auto 1fr;gap:26px}
.prin-item:last-child{border-bottom:1px solid var(--line-d)}
.prin-item .pk{font-family:var(--jpserif);font-size:clamp(46px,5vw,70px);line-height:1;color:transparent;-webkit-text-stroke:1px rgba(243,239,230,.5);transition:.5s}
.prin-item:hover .pk{color:var(--aka);-webkit-text-stroke:1px var(--aka)}
.prin-item .en{font-family:var(--jp);font-size:11px;letter-spacing:.34em;color:var(--aka);text-transform:uppercase;display:block;margin-bottom:10px}
.prin-item h3{font-size:clamp(20px,2vw,26px);margin-bottom:6px}
.prin-item p{color:rgba(243,239,230,.65);font-size:15px;max-width:52ch}
/* craft */
.craft-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line-l);margin-top:44px}
.craft-cell{padding:32px 24px;border-bottom:1px solid var(--line-l)}
.craft-cell+.craft-cell{border-left:1px solid var(--line-l)}
.craft-cell .ck{font-family:var(--jpserif);font-size:32px;color:var(--aka)}
.craft-cell h4{font-size:17px;margin:12px 0 8px}
.craft-cell p{font-size:13.5px;color:var(--sumi-l)}
/* quality */
.q-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:50px}
.q-cell{border:1px solid var(--line-d);padding:28px 24px;transition:border-color .4s,transform .4s var(--ease)}
.q-cell:hover{border-color:var(--aka);transform:translateY(-6px)}
.q-cell .qn{font-family:var(--disp);color:var(--aka);font-size:14px;letter-spacing:.2em}
.q-cell h4{font-size:19px;margin:12px 0 8px}
.q-cell p{font-size:13.5px;color:rgba(243,239,230,.6)}
.q-stats{display:grid;grid-template-columns:repeat(4,1fr);margin-top:50px;border:1px solid var(--line-d)}
.q-stat{padding:32px 18px;text-align:center}
.q-stat+.q-stat{border-left:1px solid var(--line-d)}
.q-stat .n{font-family:var(--disp);font-size:clamp(30px,3.4vw,48px)}
.q-stat .n i{font-style:normal;color:var(--aka)}
.q-stat .l{font-family:var(--jp);font-size:11px;letter-spacing:.28em;text-transform:uppercase;color:rgba(243,239,230,.55);margin-top:8px}
/* chips */
.chips{display:flex;flex-wrap:wrap;gap:12px;margin:36px 0 26px}
.chip{border:1px solid var(--line-l);padding:12px 22px;font-family:var(--jp);font-size:12px;letter-spacing:.24em;transition:.3s;cursor:default}
.chip:hover{background:var(--ink);color:var(--paper)}
.dark .chip{border-color:var(--line-d);color:rgba(243,239,230,.75)}
.dark .chip:hover{background:var(--aka);color:#fff;border-color:var(--aka)}
/* contact */
.c-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,90px)}
.c-lines{display:flex;flex-direction:column;gap:14px;font-size:14px;margin-top:24px}
.c-lines a{width:max-content;border-bottom:1px solid var(--line-l);padding-bottom:6px;transition:.3s}
.c-lines a:hover{color:var(--aka);border-color:var(--aka)}
form{display:flex;flex-direction:column;gap:26px}
.f-row{position:relative}
.f-row input,.f-row textarea{width:100%;background:transparent;border:0;border-bottom:1px solid var(--line-l);padding:14px 2px;font-family:var(--body);font-size:15px;color:inherit;outline:none;transition:border-color .3s}
.f-row textarea{resize:vertical;min-height:96px}
.f-row label{position:absolute;left:2px;top:14px;font-family:var(--jp);font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--sumi-l);pointer-events:none;transition:.3s var(--ease)}
.f-row input:focus,.f-row textarea:focus{border-color:var(--aka)}
.f-row input:focus+label,.f-row textarea:focus+label,
.f-row input:not(:placeholder-shown)+label,.f-row textarea:not(:placeholder-shown)+label{top:-12px;font-size:10px;color:var(--aka)}
/* footer */
footer{background:#0d0d0d;color:var(--paper);padding:70px 0 0;position:relative}
.f-top{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:40px;padding-bottom:60px}
.f-top h5{font-family:var(--jp);font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:var(--aka);margin-bottom:18px}
.f-top a{display:block;font-size:13.5px;color:rgba(243,239,230,.6);padding:5px 0;transition:.3s}
.f-top a:hover{color:#fff;padding-left:6px}
.f-brand p{font-size:13.5px;color:rgba(243,239,230,.55);max-width:34ch;margin-top:16px}
.f-kanji{font-family:var(--jpserif);writing-mode:vertical-rl;font-size:44px;color:rgba(243,239,230,.14);position:absolute;right:30px;top:60px}
.f-bottom{border-top:1px solid var(--line-d);padding:22px 0;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-family:var(--jp);font-size:11px;letter-spacing:.2em;color:rgba(243,239,230,.4)}
/* responsive */
@media(max-width:1020px){
  .hero-grid,.two-col,.prin-grid,.c-grid,.p-detail{grid-template-columns:1fr}
  .hero-grid{padding-top:120px}
  .p-detail.flip .p-visualbox{order:0}
  .prin-left{position:static}
  .prod-cards{grid-template-columns:1fr;max-width:560px;margin:44px auto 0}
  .craft-grid{grid-template-columns:1fr 1fr}
  .craft-cell:nth-child(3){border-left:0}
  .q-grid,.q-stats{grid-template-columns:1fr 1fr}
  .q-stat:nth-child(3){border-left:0}
  .q-stat:nth-child(n+3),.q-grid .q-cell:nth-child(n+3){border-top:1px solid var(--line-d)}
  .f-top{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .nav-links,.nav-cta{display:none}.burger{display:block}
  .craft-grid,.q-grid,.q-stats,.feat-list,.f-top{grid-template-columns:1fr}
  .craft-cell+.craft-cell{border-left:0}
  .q-stat+.q-stat{border-left:0;border-top:1px solid var(--line-d)}
  .cta-band .btn{margin-left:0}
  .f-kanji{display:none}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}.stroke-line span{transform:none}
}