/* =========================================================
   蕎麦処 滝 — site styles
   Palette: 染付の藍 (indigo) × 石臼の灰 (stone) × 蕎麦粉の斑 (husk speckle)
   ========================================================= */

:root{
  --ink:#1d1a15;
  --ink-soft:#4a443b;
  --paper:#eae7df;          /* warm stone paper (not cream) */
  --paper-2:#e1ddd2;        /* panel */
  --paper-3:#d6d1c4;        /* deeper panel / border */
  --stone:#7c766c;
  --ai:#234b6e;             /* 染付 indigo — the single bold accent */
  --ai-deep:#173448;
  --midori:#3f6b4c;         /* kutani green — used very sparingly */
  --husk:#2a251d;
  --line:rgba(29,26,21,.16);
  --line-soft:rgba(29,26,21,.09);

  --maxw:1160px;
  --pad:clamp(20px,5vw,64px);

  --serif-jp:"Shippori Mincho",serif;
  --serif-en:"Cormorant Garamond",Georgia,serif;
  --sans:"Zen Kaku Gothic New",system-ui,-apple-system,"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;
}

/* speckle: milled-buckwheat husk flecks — the page's signature texture */
.speckle{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0.16  0 0 0 0 0.14  0 0 0 0 0.11  0 0 0 0.9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size:180px 180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--paper);
  line-height:1.85;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body::before{ /* faint full-page speckle */
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0.16 0 0 0 0 0.14 0 0 0 0 0.11 0 0 0 0.7 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size:200px 200px;opacity:.05;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--ai);outline-offset:3px}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad);position:relative;z-index:1}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(234,231,223,.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header .bar{
  display:flex;align-items:center;gap:18px;
  height:62px;
  max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad);
}
.brand{display:flex;align-items:baseline;gap:10px;margin-right:auto}
.brand .mark{font-family:var(--serif-jp);font-weight:700;font-size:30px;color:var(--ai);line-height:1}
.brand .name{font-family:var(--serif-jp);font-weight:600;letter-spacing:.18em;font-size:15px}
.brand .name small{display:block;font-family:var(--serif-en);font-style:italic;letter-spacing:.06em;font-size:11px;color:var(--stone);margin-top:1px}
.nav{display:flex;align-items:center;gap:22px}
.nav a{font-size:13px;letter-spacing:.12em;color:var(--ink-soft);transition:color .2s}
.nav a:hover{color:var(--ai)}
.lang{font-family:var(--serif-en);font-style:italic;font-size:13px;border:1px solid var(--line);border-radius:999px;padding:5px 13px;color:var(--ai)}
.lang:hover{background:var(--ai);color:#fff;border-color:var(--ai)}
.nav-toggle{display:none}

/* ---------- hero ---------- */
.hero{position:relative;min-height:88vh;display:flex;align-items:flex-end;color:#f4f1e9;overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__bg img{width:100%;height:100%;object-fit:cover;object-position:center 38%;
  animation:kenburns 22s ease-in-out infinite alternate}
@keyframes kenburns{from{transform:scale(1.04)}to{transform:scale(1.13)}}
.hero__bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,22,30,.36) 0%,rgba(15,20,26,.18) 38%,rgba(20,18,14,.74) 100%)}
.hero__speckle{position:absolute;inset:0;z-index:1;opacity:.10;mix-blend-mode:overlay}
.hero .wrap{padding-block:clamp(40px,9vh,90px) clamp(40px,8vh,80px);width:100%}
.eyebrow{font-family:var(--serif-en);font-style:italic;letter-spacing:.22em;font-size:14px;
  color:#dfe7ee;opacity:.92;margin:0 0 14px}
.hero h1{font-family:var(--serif-jp);font-weight:700;line-height:1.04;margin:0;
  font-size:clamp(54px,12vw,128px);letter-spacing:.04em;
  text-shadow:0 2px 30px rgba(0,0,0,.35)}
.hero h1 .sub{display:block;font-size:clamp(18px,3.4vw,30px);font-weight:500;letter-spacing:.22em;margin-top:14px}
.hero__lead{max-width:40ch;margin:20px 0 0;font-size:clamp(14px,1.6vw,17px);color:#ece8df;text-shadow:0 1px 12px rgba(0,0,0,.5)}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

.btn{display:inline-flex;align-items:center;gap:9px;font-size:14px;letter-spacing:.08em;
  padding:13px 24px;border-radius:2px;border:1px solid transparent;transition:all .2s;font-weight:500}
.btn--solid{background:var(--ai);color:#fff;border-color:var(--ai)}
.btn--solid:hover{background:#fff;color:var(--ai)}
.btn--ghost{border-color:rgba(255,255,255,.6);color:#fff}
.btn--ghost:hover{background:rgba(255,255,255,.14);border-color:#fff}
.btn--ink{background:var(--ai);color:#fff}
.btn--ink:hover{background:var(--ai-deep)}
.btn--line{border-color:var(--ai);color:var(--ai)}
.btn--line:hover{background:var(--ai);color:#fff}

/* facts strip under hero */
.facts{background:var(--ink);color:#e9e5db;position:relative;z-index:2}
.facts .row{display:flex;flex-wrap:wrap;align-items:stretch;max-width:var(--maxw);margin:0 auto}
.facts .cell{flex:1 1 200px;padding:18px var(--pad);border-left:1px solid rgba(255,255,255,.12);display:flex;flex-direction:column;gap:3px}
.facts .cell:first-child{border-left:none}
.facts .k{font-family:var(--serif-en);font-style:italic;font-size:11px;letter-spacing:.18em;color:#b7c4cf}
.facts .v{font-size:15px;letter-spacing:.04em}
.facts .v b{font-weight:700}
.facts a.v:hover{color:#fff;text-decoration:underline}

/* ---------- sections ---------- */
section{position:relative;z-index:1}
.sec{padding-block:clamp(64px,11vw,120px)}
.sec--panel{background:var(--paper-2)}
.sec-head{display:flex;align-items:flex-end;gap:18px;margin-bottom:clamp(30px,5vw,56px)}
.sec-head .idx{font-family:var(--serif-en);font-style:italic;font-size:15px;color:var(--ai);
  padding-bottom:6px;border-bottom:2px solid var(--ai);line-height:1}
.sec-head h2{font-family:var(--serif-jp);font-weight:600;margin:0;font-size:clamp(28px,4.6vw,44px);letter-spacing:.06em}
.sec-head h2 small{display:block;font-family:var(--serif-en);font-style:italic;font-weight:500;
  font-size:.42em;letter-spacing:.1em;color:var(--stone);margin-top:6px}

/* craft */
.craft{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center}
.craft__text p{margin:0 0 18px;color:var(--ink-soft);max-width:46ch}
.craft__text p:first-child{font-family:var(--serif-jp);font-size:clamp(18px,2.4vw,23px);
  line-height:1.95;color:var(--ink);max-width:24ch}
.craft__points{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:0}
.craft__points li{display:flex;gap:16px;padding:15px 0;border-top:1px solid var(--line-soft)}
.craft__points li:last-child{border-bottom:1px solid var(--line-soft)}
.craft__points .n{font-family:var(--serif-en);font-style:italic;color:var(--ai);font-size:14px;min-width:1.6em}
.craft__points b{font-weight:700;letter-spacing:.03em}
.craft__points span{color:var(--ink-soft);font-size:14.5px}

.media{position:relative}
.media video,.media img{width:100%;border-radius:3px;
  box-shadow:0 24px 60px -28px rgba(20,30,40,.55);background:var(--paper-3)}
.media .vid{position:relative;aspect-ratio:3/4;overflow:hidden;border-radius:3px}
.media .vid video{position:absolute;inset:0;height:100%;object-fit:cover}
.media .cap{position:absolute;left:14px;bottom:14px;z-index:2;color:#fff;
  font-family:var(--serif-jp);font-size:14px;letter-spacing:.14em;
  text-shadow:0 1px 14px rgba(0,0,0,.7)}
.media .frame2{position:absolute;right:-18px;bottom:-26px;width:42%;border:6px solid var(--paper);
  border-radius:3px;box-shadow:0 18px 40px -20px rgba(20,30,40,.6)}

.note-quote{margin:clamp(36px,6vw,64px) 0 0;padding:26px clamp(22px,4vw,40px);
  background:var(--paper);border-left:3px solid var(--ai);position:relative}
.note-quote p{margin:0;font-family:var(--serif-jp);font-size:clamp(16px,2vw,20px);line-height:1.95}
.note-quote cite{display:block;margin-top:12px;font-style:normal;font-size:13px;letter-spacing:.16em;color:var(--stone)}

/* ---------- menu ---------- */
.menu-note{margin:0 0 30px;font-size:13px;color:var(--stone);letter-spacing:.04em}
.menu-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(28px,4vw,52px)}
.mcard h3{font-family:var(--serif-jp);font-weight:600;font-size:20px;margin:0 0 4px;letter-spacing:.08em;
  display:flex;align-items:baseline;gap:12px}
.mcard h3 small{font-family:var(--serif-en);font-style:italic;font-size:12px;color:var(--stone);letter-spacing:.06em}
.mcard{border-top:2px solid var(--ink);padding-top:16px}
.mcard.feature{border-top-color:var(--ai)}
.mlist{list-style:none;margin:14px 0 0;padding:0}
.mlist li{display:flex;align-items:baseline;gap:10px;padding:9px 0;border-bottom:1px dotted var(--line)}
.mlist .nm{flex:1}
.mlist .nm em{font-style:normal;display:block;font-size:12.5px;color:var(--stone);letter-spacing:.02em;margin-top:1px}
.mlist .pr{font-family:var(--serif-jp);font-weight:600;white-space:nowrap;letter-spacing:.02em}
.mlist .pr.set{color:var(--ai)}
.menu-foot{margin-top:30px;font-size:12.5px;color:var(--stone);line-height:1.9;letter-spacing:.02em}
.tag{display:inline-block;font-size:11px;letter-spacing:.1em;color:var(--ai);border:1px solid var(--ai);
  border-radius:999px;padding:2px 9px;margin-left:6px;vertical-align:middle}

/* ---------- greeting ---------- */
.greet{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(28px,5vw,60px);align-items:center}
.greet img{border-radius:3px;box-shadow:0 22px 50px -26px rgba(20,30,40,.5);transform:rotate(-1.4deg)}
.greet__text p{margin:0 0 16px;color:var(--ink-soft)}
.greet__text p.big{font-family:var(--serif-jp);font-size:clamp(19px,2.6vw,26px);color:var(--ink);line-height:1.9}
.sign{font-family:var(--serif-jp);letter-spacing:.3em;color:var(--ink);margin-top:6px}

/* ---------- access ---------- */
.access{display:grid;grid-template-columns:1fr 1.25fr;gap:clamp(28px,5vw,56px);align-items:stretch}
.info-table{width:100%;border-collapse:collapse}
.info-table th,.info-table td{text-align:left;vertical-align:top;padding:14px 0;border-bottom:1px solid var(--line)}
.info-table th{font-weight:500;color:var(--stone);font-size:13px;letter-spacing:.1em;width:7.5em;white-space:nowrap;
  font-family:var(--serif-jp)}
.info-table td{font-size:15px}
.info-table td b{font-weight:700}
.info-table a{color:var(--ai);text-decoration:underline;text-underline-offset:3px}
.map{position:relative;min-height:340px;border-radius:3px;overflow:hidden;border:1px solid var(--line)}
.map iframe{position:absolute;inset:0;width:100%;height:100%;border:0;filter:grayscale(.18) contrast(1.02)}
.jaist-pin{margin-top:14px;font-size:13px;color:var(--ink-soft);display:flex;gap:8px;align-items:flex-start}
.jaist-pin b{color:var(--ai)}

/* ---------- english extras: how to / dietary ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tip{background:var(--paper);border:1px solid var(--line);border-radius:3px;padding:24px}
.tip .num{font-family:var(--serif-en);font-style:italic;color:var(--ai);font-size:18px}
.tip h4{font-family:var(--serif-en);font-weight:600;font-size:19px;margin:6px 0 8px}
.tip p{margin:0;font-size:14px;color:var(--ink-soft);line-height:1.8}
.diet{margin-top:30px;background:var(--ai);color:#eef3f7;border-radius:3px;padding:clamp(24px,4vw,40px);
  display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:start}
.diet .leaf{font-family:var(--serif-en);font-style:italic;font-size:15px;letter-spacing:.12em;
  writing-mode:vertical-rl;color:#bcd0df;border-right:1px solid rgba(255,255,255,.25);padding-right:18px}
.diet h3{font-family:var(--serif-en);font-weight:600;font-size:24px;margin:0 0 10px}
.diet p{margin:0 0 12px;font-size:14.5px;line-height:1.85;color:#dfe9f0}
.diet p:last-child{margin-bottom:0}
.diet b{color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#cdc8bd;padding-block:clamp(46px,7vw,72px)}
.site-footer .grid{display:flex;flex-wrap:wrap;gap:38px;justify-content:space-between;align-items:flex-start}
.site-footer .mark{font-family:var(--serif-jp);font-size:40px;color:#fff;line-height:1}
.site-footer .mark small{display:block;font-family:var(--serif-en);font-style:italic;font-size:12px;
  letter-spacing:.14em;color:#9fb0bd;margin-top:8px}
.site-footer dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:6px 18px;font-size:13.5px}
.site-footer dt{color:#8b95a0;font-family:var(--serif-jp);letter-spacing:.1em}
.site-footer dd{margin:0;color:#e3ded4}
.site-footer a:hover{color:#fff;text-decoration:underline}
.copy{margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:11.5px;letter-spacing:.1em;color:#7e8893;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- language splash (root) ---------- */
.splash{min-height:100vh;display:grid;place-items:center;text-align:center;position:relative}
.splash .inner{position:relative;z-index:2;padding:30px}
.splash .mark{font-family:var(--serif-jp);font-weight:700;color:var(--ai);font-size:clamp(80px,20vw,160px);line-height:1}
.splash .nm{font-family:var(--serif-jp);letter-spacing:.4em;font-size:clamp(14px,3vw,18px);margin:6px 0 4px}
.splash .en{font-family:var(--serif-en);font-style:italic;letter-spacing:.16em;color:var(--stone);margin-bottom:34px}
.splash .pick{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- responsive ---------- */
@media(max-width:860px){
  .craft,.greet,.access,.diet{grid-template-columns:1fr}
  .greet img{transform:none;max-width:420px}
  .menu-grid{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .diet .leaf{writing-mode:horizontal-tb;border-right:none;border-bottom:1px solid rgba(255,255,255,.25);padding:0 0 12px}
  .media .frame2{position:static;width:60%;margin:14px auto 0;border-width:5px}
  .nav{position:fixed;inset:62px 0 auto 0;flex-direction:column;background:var(--paper);
    border-bottom:1px solid var(--line);padding:18px var(--pad);gap:18px;transform:translateY(-130%);
    transition:transform .3s;align-items:flex-start;box-shadow:0 20px 40px -24px rgba(0,0,0,.4)}
  .nav.open{transform:translateY(0)}
  .nav-toggle{display:flex;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;margin-left:auto}
  .nav-toggle span{width:24px;height:2px;background:var(--ink);display:block;transition:.25s}
  .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}
@media(max-width:560px){
  .facts .cell{flex:1 1 50%;border-left:1px solid rgba(255,255,255,.12)}
  .facts .cell:nth-child(odd){border-left:none}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto!important;transition:none!important}
}