:root{
  --navy:#0b0f1e; --navy2:#101627; --gold:#c7a86a; --white:#f2f3f6; --grey:#8b93a6;
  --maxw:1080px; --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--navy);color:var(--white);
  font-family:"Noto Serif JP",serif;font-weight:300;line-height:2.15;letter-spacing:.06em;
  -webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.en{font-family:"Barlow Condensed",sans-serif;font-weight:500;letter-spacing:.3em}
.disp{font-family:"Cormorant Garamond","Noto Serif JP",serif;font-weight:400;letter-spacing:.14em;color:var(--gold);line-height:1.2}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.narrow{max-width:720px}

/* header */
header{position:fixed;top:0;left:0;right:0;z-index:60;transition:background .4s var(--ease)}
header.solid{background:rgba(11,15,30,.9);backdrop-filter:blur(10px)}
.hbar{height:72px;display:flex;align-items:center;justify-content:center;position:relative}
.hlogo{font-family:"Barlow Condensed",sans-serif;font-weight:500;letter-spacing:.34em;font-size:16px}
.burger{position:absolute;right:24px;top:50%;transform:translateY(-50%);width:26px;height:16px;background:none;border:0;cursor:pointer}
.burger span{position:absolute;left:0;right:0;height:1px;background:var(--white);transition:.35s var(--ease)}
.burger span:nth-child(1){top:0}.burger span:nth-child(2){top:50%}.burger span:nth-child(3){bottom:0}
.burger.on span:nth-child(1){top:50%;transform:rotate(45deg)}
.burger.on span:nth-child(2){opacity:0}
.burger.on span:nth-child(3){bottom:auto;top:50%;transform:rotate(-45deg)}
.menu{position:fixed;inset:0;background:rgba(11,15,30,.97);display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .5s var(--ease);z-index:55}
.menu.on{opacity:1;pointer-events:auto}
.menu ul{list-style:none;text-align:center}
.menu li{margin:22px 0}
.menu a{font-family:"Barlow Condensed",sans-serif;letter-spacing:.3em;font-size:22px;transition:color .3s}
.menu a:hover{color:var(--gold)}
.menu .ja{display:block;font-family:"Noto Serif JP",serif;font-size:11px;letter-spacing:.2em;padding-left:.2em;color:var(--grey);margin-top:2px}

/* reveal */
.rv{opacity:0;transform:translateY(26px);transition:opacity 1.1s var(--ease),transform 1.1s var(--ease)}
.rv.in{opacity:1;transform:none}

/* hero */
.hero{position:relative;height:100svh;min-height:560px;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden}
.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,15,30,.5),rgba(11,15,30,.1) 45%,rgba(11,15,30,.9))}
.hero .in{position:relative;z-index:2}
.hero h1{margin:0}
.hero h1 img{position:static;width:min(520px,70vw);height:auto;margin:0 auto}
.hero .sub{margin-top:18px}
.hero .sub img{position:static;width:min(520px,70vw);height:auto;margin:0 auto}
.cue{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:2}
.cue::after{content:"";display:block;width:1px;height:56px;background:linear-gradient(var(--gold),transparent)}

/* page head */
.phead{padding:180px 0 90px;text-align:center}
.phead .disp{font-size:clamp(30px,6vw,46px)}
.phead h1{font-size:clamp(15px,2.6vw,18px);font-weight:300;margin-top:16px;letter-spacing:.24em;padding-left:.24em;color:var(--white)}

/* sections */
section{padding:96px 0}
.lead{font-size:clamp(14px,2.4vw,16px);line-height:2.5}
.lead p+p{margin-top:28px}
.vtitle{writing-mode:vertical-rl;margin:0 auto;font-size:clamp(20px,4vw,26px);font-weight:400;letter-spacing:.34em;line-height:1.7}
.htitle{font-size:clamp(21px,4.4vw,30px);font-weight:200;letter-spacing:.42em;line-height:2.4;padding-left:.42em}

/* index gates */
.gates{display:grid;grid-template-columns:repeat(3,1fr);gap:2px}
@media(max-width:860px){.gates{grid-template-columns:1fr}}
.gate{position:relative;aspect-ratio:4/5;overflow:hidden;display:block}
@media(max-width:860px){.gate{aspect-ratio:16/9}}
.gate img{width:100%;height:100%;object-fit:cover;filter:brightness(.55);transition:transform 1.4s var(--ease),filter .6s}
.gate:hover img{transform:scale(1.05);filter:brightness(.72)}
.gate .lbl{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.gate .lbl .disp{font-size:clamp(20px,3.4vw,26px)}
.gate .lbl .ja{font-size:13px;margin-top:8px;letter-spacing:.2em;padding-left:.2em}

/* notice */
.notice{border-top:1px solid rgba(199,168,106,.28);border-bottom:1px solid rgba(199,168,106,.28)}
.notice .wrap{display:flex;gap:18px;align-items:center;justify-content:center;flex-wrap:wrap;padding:18px 28px;font-size:13px;text-align:center}
.tag{font-family:"Barlow Condensed",sans-serif;letter-spacing:.24em;font-size:11px;color:var(--navy);background:var(--gold);padding:3px 12px}

/* product blocks */
.pblock{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:104px}
.pblock:nth-child(even) .ptext{order:2}
@media(max-width:860px){.pblock{grid-template-columns:1fr;gap:26px;margin-bottom:72px}.pblock:nth-child(even) .ptext{order:0}}

.pblock .ttl{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap}
.pblock .ttl .disp{font-size:clamp(24px,4.4vw,34px)}
.pblock .ttl .ja{font-size:14px;letter-spacing:.16em;color:var(--white);font-weight:300}
.pblock p{color:var(--grey);font-size:14px;margin-top:14px;line-height:2.3}
.pblock img{aspect-ratio:4/3;object-fit:cover;width:100%}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(199,168,106,.25);border:1px solid rgba(199,168,106,.25)}
@media(max-width:860px){.steps{grid-template-columns:1fr}}
.step{background:var(--navy);padding:38px 30px}
.step .disp{font-size:clamp(17px,2.6vw,21px)}
.step h3{font-size:16px;font-weight:400;margin:12px 0 12px}
.step p{color:var(--grey);font-size:13.5px;line-height:2.2}

/* buttons */
.btn{display:inline-block;padding:15px 42px;border:1px solid var(--gold);color:var(--gold);
  font-family:"Barlow Condensed",sans-serif;letter-spacing:.24em;font-size:14px;transition:.3s var(--ease)}
.btn:hover{background:var(--gold);color:var(--navy)}
.btn.off{border-color:rgba(255,255,255,.18);color:#6f778a;pointer-events:none}
.btn.line{border-color:#06c755;color:#06c755}
.btn.line:hover{background:#06c755;color:#fff}
.btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:34px}

.center{text-align:center}
.note{color:#767e92;font-size:11.5px;line-height:2;letter-spacing:.04em}
.rule{width:1px;height:60px;background:rgba(199,168,106,.5);margin:0 auto}

footer{border-top:1px solid rgba(255,255,255,.08);padding:56px 0 64px}
.frow{display:flex;justify-content:space-between;gap:28px;flex-wrap:wrap;font-size:12px;color:var(--grey)}
.flinks{display:flex;gap:22px;flex-wrap:wrap;font-family:"Barlow Condensed",sans-serif;letter-spacing:.2em;font-size:13px}
.flinks a:hover{color:var(--gold)}

/* section eyebrow (centered) */
.eyebrow{text-align:center;margin-bottom:34px}
.eyebrow .disp{display:block;font-size:clamp(24px,4.4vw,34px)}
.eyebrow .ja{display:block;font-size:13px;letter-spacing:.22em;padding-left:.22em;color:var(--grey);margin-top:8px}

/* 小さめボタン（各アイテム用） */
.btn.sm{padding:11px 26px;font-size:12.5px;letter-spacing:.2em}
.soon{display:inline-block;margin-left:12px;font-size:11px;letter-spacing:.18em;color:#7d8499;
  border:1px solid rgba(255,255,255,.16);padding:4px 10px;vertical-align:middle}
.pblock .act{margin-top:22px;display:flex;align-items:center;flex-wrap:wrap;gap:10px}

/* TOPICS */
.topics{border-top:1px solid rgba(255,255,255,.1)}
.topic{display:grid;grid-template-columns:150px 1fr;gap:28px;padding:34px 0;border-bottom:1px solid rgba(255,255,255,.1);align-items:start}
@media(max-width:700px){.topic{grid-template-columns:1fr;gap:10px;padding:26px 0}}
.topic .date{font-family:"Barlow Condensed",sans-serif;letter-spacing:.2em;font-size:13px;color:var(--gold)}
.topic h2{font-size:17px;font-weight:400;letter-spacing:.08em}
.topic p{color:var(--grey);font-size:13.5px;margin-top:12px;line-height:2.2}
.topic img{margin-top:20px;max-width:300px}

/* contact: 3カラム */
.cols3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(199,168,106,.25);border:1px solid rgba(199,168,106,.25)}
@media(max-width:860px){.cols3{grid-template-columns:1fr}}
.col{background:var(--navy);padding:46px 28px;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:20px}
.col .disp{font-size:clamp(19px,3vw,24px)}
.col .ja{display:block;font-size:12px;letter-spacing:.2em;padding-left:.2em;color:var(--grey);margin-top:8px}
.col p{font-size:13px;color:var(--grey);line-height:2.1}
.col .acts{display:flex;flex-direction:column;gap:10px;width:100%;align-items:center}

/* 固定ヘッダーの分だけアンカー位置をずらす */
section[id]{scroll-margin-top:84px}

/* 製品ブロックで写真を並べる */
.pair{display:grid;grid-template-columns:1fr;gap:10px}
.pair img{aspect-ratio:16/9;object-fit:cover;width:100%}
/* テキストの下に写真を3枚並べる（センターストライプ用） */
.solo{display:block}
.solo .ptext{max-width:720px}
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:38px}
@media(max-width:860px){.trio{grid-template-columns:1fr;gap:18px}}
.trio figure{margin:0}
.trio img{aspect-ratio:4/3;object-fit:cover;width:100%}
.trio figcaption{color:#767e92;font-size:11.5px;letter-spacing:.08em;padding-left:.08em;margin-top:8px;text-align:center}

/* 日本語の折り返しを「、」「。」の位置だけにする */
.nb{display:inline-block}
.pblock p,.lead p,.topic p,.step p{word-break:auto-phrase}

/* ===== INSTALL ページ ===== */
.sec-head{text-align:center;margin-bottom:44px}
.sec-head .disp{display:block;font-size:clamp(24px,4.4vw,34px)}
.sec-head .ja{display:block;font-size:13px;letter-spacing:.22em;padding-left:.22em;color:var(--grey);margin-top:8px}
.sec-lead{max-width:720px;margin:0 auto 40px;text-align:center;color:var(--grey);font-size:14px;line-height:2.3;word-break:auto-phrase}

/* 素材 2カラム */
.mats{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(199,168,106,.25);border:1px solid rgba(199,168,106,.25)}
@media(max-width:860px){.mats{grid-template-columns:1fr}}
.mat{background:var(--navy);padding:40px 32px}
.mat .disp{font-size:clamp(19px,3vw,23px)}
.mat .ja{display:block;font-size:12px;letter-spacing:.2em;color:var(--grey);margin-top:6px}
.mat p{color:var(--grey);font-size:13.5px;line-height:2.25;margin-top:18px;word-break:auto-phrase}

/* 道具 */
.tools{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:860px){.tools{grid-template-columns:repeat(2,1fr)}}
.tool{border:1px solid rgba(255,255,255,.09);padding:30px 18px 26px;text-align:center}
.tool svg{width:54px;height:54px;stroke:var(--gold);fill:none;stroke-width:1.2;stroke-linecap:round;stroke-linejoin:round;margin:0 auto}
.tool h3{font-size:15px;font-weight:400;margin-top:16px;letter-spacing:.08em;padding-left:.08em}
.tool p{color:var(--grey);font-size:12.5px;line-height:2;margin-top:8px;word-break:auto-phrase}
.tool.plus{border-color:rgba(199,168,106,.45)}
.tools-plus-label{text-align:center;margin:42px 0 18px;color:var(--gold);font-size:13px;letter-spacing:.24em;padding-left:.24em}
.tools.two{grid-template-columns:repeat(2,1fr);max-width:720px;margin:0 auto}

/* 注意点 3カラム */
.cautions{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(199,168,106,.25);border:1px solid rgba(199,168,106,.25)}
@media(max-width:860px){.cautions{grid-template-columns:1fr}}
.caution{background:var(--navy);padding:38px 28px}
.caution .disp{font-size:clamp(17px,2.6vw,21px)}
.caution h3{font-size:16px;font-weight:400;margin:10px 0 16px}
.caution ul{list-style:none;margin:0;padding:0}
.caution li{color:var(--grey);font-size:13.5px;line-height:2.1;padding-left:1.1em;text-indent:-1.1em;margin-bottom:10px;word-break:auto-phrase}
.caution li::before{content:"—";color:var(--gold);margin-right:.4em}

/* 耐久性 */
.durab{max-width:760px;margin:0 auto}
.durab p{color:var(--grey);font-size:14px;line-height:2.35;margin-bottom:18px;word-break:auto-phrase}
.factors{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:28px 0}
@media(max-width:700px){.factors{grid-template-columns:1fr}}
.factor{border-left:1px solid var(--gold);padding:6px 0 6px 16px}
.factor b{display:block;font-weight:400;font-size:14.5px;color:var(--white)}
.factor span{display:block;color:var(--grey);font-size:12.5px;line-height:1.9;margin-top:4px}

/* ===== INSTALL 改訂（コンパクト化） ===== */
.tools.compact{grid-template-columns:repeat(4,1fr);gap:10px}
@media(max-width:860px){.tools.compact{grid-template-columns:repeat(2,1fr)}}
.tools.compact .tool{padding:22px 12px 18px;position:relative}
.tools.compact .tool svg{width:42px;height:42px}
.tools.compact .tool h3{font-size:14px;margin-top:12px}
.tools.compact .tool p{font-size:12px;line-height:1.85;margin-top:6px}
.tool .plus-tag{position:absolute;top:8px;right:10px;font-size:10px;letter-spacing:.12em;color:var(--gold)}
.tools-note{text-align:center;color:#767e92;font-size:11.5px;margin-top:14px;letter-spacing:.06em}

/* 流れ＋注意点を1つに */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(199,168,106,.25);border:1px solid rgba(199,168,106,.25)}
@media(max-width:860px){.flow{grid-template-columns:1fr}}
.phase{background:var(--navy);padding:36px 26px}
.phase .disp{font-size:clamp(17px,2.6vw,21px)}
.phase h3{font-size:16px;font-weight:400;margin:8px 0 12px}
.phase .what{color:var(--white);font-size:13.5px;line-height:2.1;word-break:auto-phrase;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:16px;opacity:.9}
.phase ul{list-style:none;margin:0;padding:0}
.phase li{color:var(--grey);font-size:13px;line-height:2;padding-left:1.1em;text-indent:-1.1em;margin-bottom:8px;word-break:auto-phrase}
.phase li::before{content:"—";color:var(--gold);margin-right:.4em}

/* 素材カード（キャッチ＋目的＋特徴） */
.mat .catch{color:var(--white);font-size:15px;line-height:1.9;margin-top:18px;letter-spacing:.06em;word-break:auto-phrase}
.mat dl{margin:16px 0 0;padding:0}
.mat dt{color:var(--gold);font-size:11px;letter-spacing:.24em;margin-top:14px}
.mat dd{margin:4px 0 0;color:var(--grey);font-size:13px;line-height:2;word-break:auto-phrase}
.mat dd ul{list-style:none;margin:0;padding:0}
.mat dd li{padding-left:1.1em;text-indent:-1.1em}
.mat dd li::before{content:"—";color:var(--gold);margin-right:.4em}
.mat .use{margin-top:18px;padding-top:14px;border-top:1px solid rgba(255,255,255,.08);color:var(--grey);font-size:12.5px;line-height:1.9}
.tool .icons2{display:flex;justify-content:center;align-items:center;gap:6px}
.tool .icons2 svg{width:36px;height:36px;margin:0}
.tool .icons2 i{font-style:normal;color:var(--grey);font-size:11px}
.tool .caution-s{display:block;color:#8a8f9e;font-size:11px;line-height:1.8;margin-top:6px}

/* 箇条書きの「—」が1文字目に重なる問題の修正
   （全角ダッシュ1字＋余白が、ぶら下げ幅1.1emより広かった）
   → 記号を絶対配置にして、本文は常に左端から1.5em下げる */
.caution li,.phase li,.mat dd li{position:relative;padding-left:1.5em;text-indent:0}
.caution li::before,.phase li::before,.mat dd li::before{position:absolute;left:0;top:0;margin-right:0}
.phase .step-no{display:flex;align-items:baseline;gap:12px}
.phase .step-no .ja{color:var(--gold);font-size:13px;letter-spacing:.2em}

/* 耐久性を中央ぞろえに */
.durab{text-align:center}
.durab p{text-align:center}
.factors.two{grid-template-columns:repeat(2,1fr);max-width:560px;margin:28px auto}
@media(max-width:700px){.factors.two{grid-template-columns:1fr}}
.durab .factor{border-left:0;border-top:1px solid var(--gold);padding:14px 8px 4px;text-align:center}

/* 耐久性の2項目を、素材・流れと同じ「四角で囲む」形に */
.factors.two{gap:1px;background:rgba(199,168,106,.25);border:1px solid rgba(199,168,106,.25);max-width:720px}
.durab .factor{background:var(--navy);border-top:0;padding:28px 22px}
.durab .factor b{font-size:15px}
.durab .factor span{margin-top:10px;line-height:2}
/* 禁止事項（はっきり言い切る項目） */
.phase li .must{color:var(--white);font-weight:400}

/* 強調をやめる（言い訳がましく見えないよう、他の項目と同じ調子に） */
.phase li .must{color:inherit;font-weight:inherit}

/* CARE: 3列の区切り線の高さをそろえる（リード文を2行分の高さに固定） */
@media(min-width:861px){
  .flow .phase h3{min-height:1.6em}
  .flow .phase .what{min-height:4.2em}
}

/* DURABILITY: 項目名の下に細い線 */
.durab .factor b{padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.08);margin:0 12px}
.durab .factor span{margin-top:14px}
/* 耐久性の枠: 上下の余白をそろえる（項目名の行間ぶん上が5px広かった） */
.durab .factor{padding:27px 22px 28px}
.durab .factor b{line-height:1.6}