/* ============================================================
   内藤 NAITO — 静奢 brand site
   palette: 生成り / 墨 / 真鍮
   ============================================================ */

:root{
  --bg:        #F4F1EA;
  --bg-alt:    #EDE8DE;
  --ink:       #1D1B18;
  --ink-soft:  #4A453D;
  --muted:     #6F685C;
  --line:      #D9D1C2;
  --line-soft: #E6DFD2;
  --accent:    #77623C;
  --deep:      #201E1A;

  --serif: "Yu Mincho","YuMincho","Hiragino Mincho ProN","Noto Serif JP",
           "Songti SC","STSong","SimSun",serif;
  --sans:  "Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP",
           "PingFang SC","Microsoft YaHei",system-ui,sans-serif;

  --ease: cubic-bezier(.22,.61,.36,1);
  --gut: clamp(20px,5vw,64px);
  /* 与 .wrap (max 1240) 的内容左边缘对齐 */
  --inset: max(var(--gut), calc(50% - 620px + var(--gut)));
}

*,*::before,*::after{ box-sizing:border-box; }

html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--serif);
  font-size:16px;
  line-height:1.95;
  letter-spacing:.03em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

body.lang-cn{ letter-spacing:.02em; }

img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }

::selection{ background:#D8CDB6; color:var(--deep); }

/* --- paper grain ------------------------------------------------ */
.grain{
  position:fixed; inset:0; width:100%; height:100%;
  pointer-events:none; z-index:9999;
  opacity:.032; mix-blend-mode:multiply;
}

/* --- layout ----------------------------------------------------- */
.wrap{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 var(--gut);
}

.sec{ padding:clamp(88px,11vw,168px) 0; position:relative; }
.sec-alt{ background:var(--bg-alt); }

/* --- header ----------------------------------------------------- */
.site-head{
  position:fixed; top:0; left:0; right:0; z-index:120;
  display:flex; align-items:center; gap:clamp(16px,3vw,48px);
  padding:26px var(--inset);
  transition:padding .5s var(--ease), background .5s var(--ease),
             box-shadow .5s var(--ease), backdrop-filter .5s var(--ease);
}
.site-head.is-scrolled{
  padding:14px var(--inset);
  background:rgba(244,241,234,.86);
  backdrop-filter:blur(14px) saturate(1.1);
  box-shadow:0 1px 0 var(--line-soft);
}

.brand{ display:flex; align-items:baseline; gap:10px; flex-shrink:0; }
.brand-jp{
  font-size:20px; letter-spacing:.22em; font-weight:500;
  text-indent:.22em;
}
.brand-en{
  font-family:var(--sans);
  font-size:9.5px; letter-spacing:.42em; color:var(--muted);
  text-transform:uppercase;
}

.nav{
  display:flex; gap:clamp(18px,2.4vw,34px);
  margin-left:auto;
}
.nav a{
  font-family:var(--sans);
  font-size:11.5px; letter-spacing:.2em; color:var(--ink-soft);
  padding:6px 0; position:relative;
  transition:color .35s var(--ease);
}
.nav a::after{
  content:""; position:absolute; left:0; bottom:0;
  width:0; height:1px; background:var(--accent);
  transition:width .45s var(--ease);
}
.nav a:hover{ color:var(--ink); }
.nav a:hover::after{ width:100%; }

.lang{
  display:flex; align-items:center; gap:7px;
  margin-left:clamp(8px,2vw,28px);
  font-family:var(--sans); font-size:10.5px; letter-spacing:.14em;
}
.lang-btn{ color:var(--muted); padding:4px 2px; transition:color .3s var(--ease); }
.lang-btn.is-on{ color:var(--ink); border-bottom:1px solid var(--accent); }
.lang-btn:hover{ color:var(--ink); }
.lang-sep{ color:var(--line); }

.burger{ display:none; }

/* --- hero ------------------------------------------------------- */
.hero{
  position:relative;
  min-height:100svh;
  display:flex; align-items:center;
  padding:120px 0 90px;
  overflow:hidden;
}

.hero-glow{
  position:absolute; inset:0;
  background:
    radial-gradient(125% 95% at 84% 10%, rgba(255,253,246,.95) 0%, rgba(255,253,246,0) 56%),
    radial-gradient(95% 75% at 96% 92%, rgba(226,214,190,.30) 0%, rgba(226,214,190,0) 62%);
  pointer-events:none;
}

/* 极淡的织物纵向肌理 */
.hero-veil{
  position:absolute; inset:0;
  background:
    repeating-linear-gradient(90deg,
      rgba(197,183,158,.045) 0 1px,
      rgba(197,183,158,0) 1px 5px);
  mask-image:linear-gradient(180deg, rgba(0,0,0,.55) 0%, rgba(0,0,0,.9) 55%, rgba(0,0,0,0) 100%);
  -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.55) 0%, rgba(0,0,0,.9) 55%, rgba(0,0,0,0) 100%);
  pointer-events:none;
  opacity:.7;
}

.hero-inner{
  position:relative; z-index:2;
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 var(--gut);
}
.hero-inner > *{ max-width:820px; }

.eyebrow{
  font-family:var(--sans);
  font-size:10.5px; letter-spacing:.3em; color:var(--muted);
  margin:0 0 clamp(28px,4vw,46px); text-transform:uppercase;
}

.hero-title{
  font-size:clamp(40px,7.4vw,88px);
  line-height:1.28;
  letter-spacing:.06em;
  font-weight:400;
  margin:0 0 clamp(26px,3.4vw,40px);
  color:var(--ink);
}
.hero-title span{ display:block; }
.hero-title span:nth-child(2){ color:var(--accent); }

.hero-lede{
  font-size:clamp(14px,1.35vw,16.5px);
  line-height:2.25;
  color:var(--ink-soft);
  max-width:46em;
  margin:0 0 clamp(30px,4vw,44px);
  letter-spacing:.05em;
}

.hero-meta{
  display:flex; align-items:center; flex-wrap:wrap; gap:14px;
  font-family:var(--sans);
  font-size:10px; letter-spacing:.24em; color:var(--muted);
}
.hero-meta i{ width:26px; height:1px; background:var(--line); }

.hero-side{
  position:absolute; right:var(--inset); top:50%; transform:translateY(-50%);
  writing-mode:vertical-rl; z-index:2;
  font-family:var(--sans);
  font-size:9.5px; letter-spacing:.44em; color:var(--muted); opacity:.7;
}

.scroll-hint{
  position:absolute; left:var(--inset); bottom:38px; z-index:2;
  display:flex; align-items:center; gap:12px;
  font-family:var(--sans); font-size:9.5px; letter-spacing:.26em; color:var(--muted);
}
.scroll-hint i{
  display:block; width:1px; height:44px; background:var(--line);
  position:relative; overflow:hidden;
}
.scroll-hint i::after{
  content:""; position:absolute; inset:0;
  background:var(--accent);
  animation:drop 2.6s var(--ease) infinite;
}
@keyframes drop{
  0%{ transform:translateY(-100%); }
  60%,100%{ transform:translateY(100%); }
}

/* --- section heads ---------------------------------------------- */
.sec-head{ margin-bottom:clamp(48px,6vw,84px); max-width:820px; }

.sec-num{
  font-family:var(--sans);
  font-size:10px; letter-spacing:.3em; color:var(--accent);
  margin:0 0 22px;
}
.sec-num span{ color:var(--line); margin:0 6px; }

.sec-title{
  font-size:clamp(28px,3.9vw,46px);
  line-height:1.46;
  letter-spacing:.05em;
  font-weight:400;
  margin:0 0 22px;
}
.sec-title span{ display:block; }

.sec-sub{
  font-size:clamp(13.5px,1.2vw,15px);
  color:var(--muted);
  letter-spacing:.06em;
  margin:0;
  max-width:44em;
  line-height:2.1;
}

/* --- philosophy ------------------------------------------------- */
.philo-body{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:clamp(24px,4vw,64px);
  max-width:1080px;
}
.philo-body p{
  margin:0;
  font-size:clamp(14px,1.25vw,15.5px);
  line-height:2.3;
  color:var(--ink-soft);
  letter-spacing:.05em;
}
.philo-body p:first-child{
  grid-column:1 / -1;
  font-size:clamp(16px,1.7vw,20px);
  line-height:2.15;
  color:var(--ink);
  max-width:34em;
  padding-bottom:clamp(20px,3vw,36px);
  border-bottom:1px solid var(--line-soft);
}

.values{
  list-style:none; margin:clamp(48px,6vw,84px) 0 0; padding:0;
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--line-soft);
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
}
.values li{
  background:var(--bg);
  padding:clamp(24px,3vw,38px) clamp(18px,2vw,28px);
  transition:background .5s var(--ease);
}
.values li:hover{ background:#FBF8F2; }
.v-idx{
  display:block;
  font-family:var(--sans); font-size:9.5px; letter-spacing:.3em;
  color:var(--accent); margin-bottom:16px;
}
.values h3{
  font-size:clamp(15px,1.4vw,17.5px); font-weight:500;
  letter-spacing:.1em; margin:0 0 10px;
}
.values p{
  font-size:12.5px; color:var(--muted); margin:0; line-height:2;
  letter-spacing:.04em;
}

/* --- cards ------------------------------------------------------ */
.cards{
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:clamp(16px,2.2vw,30px);
}

.card{
  background:var(--bg);
  display:flex; flex-direction:column;
  transition:transform .7s var(--ease), box-shadow .7s var(--ease);
}
.card:hover{
  transform:translateY(-6px);
  box-shadow:0 24px 48px -28px rgba(32,30,26,.28);
}

/* 织物面 — 整幅渐变底 + 柔光 + 织纹，纯 CSS */
.drape{
  height:clamp(190px,20vw,260px);
  position:relative; overflow:hidden;
  background:var(--bg-alt);
}

.drape::before,
.drape::after{
  content:""; position:absolute; inset:-24%;
  transition:transform 1.6s var(--ease);
  pointer-events:none;
}

/* 柔光：从左上斜掠而过 */
.drape::before{
  background:radial-gradient(58% 62% at 32% 26%,
             rgba(255,255,255,.62) 0%, rgba(255,255,255,.18) 42%, rgba(255,255,255,0) 72%);
  filter:blur(8px);
}
/* 织纹 */
.drape::after{
  background:repeating-linear-gradient(76deg,
             rgba(255,255,255,.10) 0 2px, rgba(255,255,255,0) 2px 15px);
  filter:blur(.35px);
}

.card:hover .drape::before{ transform:translate(-4%, -2%) rotate(1.5deg); }
.card:hover .drape::after{ transform:translate(3%, 2%) rotate(-1deg); }

.drape-silk{
  background:linear-gradient(158deg, #FFFDF6 0%, #F6EEE0 42%, #E6D9C0 100%);
}
.drape-couture{
  background:linear-gradient(158deg, #3C382F 0%, #2A2822 46%, #454034 100%);
}
.drape-couture::before{
  background:radial-gradient(58% 62% at 34% 24%,
             rgba(255,255,255,.20) 0%, rgba(255,255,255,.06) 44%, rgba(255,255,255,0) 74%);
}
.drape-couture::after{
  background:repeating-linear-gradient(76deg,
             rgba(255,255,255,.055) 0 2px, rgba(0,0,0,0) 2px 17px);
}
.drape-basics{
  background:linear-gradient(158deg, #FCF6EA 0%, #EFE5D2 48%, #DACCB3 100%);
}
.drape-basics::after{
  background:
    repeating-linear-gradient(76deg, rgba(255,255,255,.22) 0 1px, rgba(255,255,255,0) 1px 6px),
    repeating-linear-gradient(-14deg, rgba(170,152,122,.13) 0 1px, rgba(170,152,122,0) 1px 6px);
}

.card-body{
  padding:clamp(22px,2.4vw,32px) clamp(20px,2.2vw,30px) clamp(26px,2.6vw,34px);
  display:flex; flex-direction:column; flex:1;
}

.card-idx{
  font-family:var(--sans); font-size:9.5px; letter-spacing:.3em;
  color:var(--muted); margin:0 0 14px;
}

.card-title{
  margin:0 0 18px; font-weight:400;
  display:flex; flex-direction:column; gap:6px;
}
.ct-jp{ font-size:clamp(19px,1.9vw,23px); letter-spacing:.12em; }
.ct-en{
  font-family:var(--sans); font-size:9px; letter-spacing:.4em;
  color:var(--accent);
}

.card-desc{
  margin:0 0 22px;
  font-size:13px; line-height:2.15; color:var(--ink-soft);
  letter-spacing:.04em;
}

.card-list{
  list-style:none; margin:0 0 20px; padding:0;
  display:flex; flex-direction:column; gap:9px;
  font-size:12.5px; color:var(--muted); letter-spacing:.06em;
}
.card-list li{ display:flex; align-items:center; gap:10px; }
.card-list li::before{
  content:""; width:14px; height:1px; background:var(--line); flex-shrink:0;
}

.card-tag{
  margin:auto 0 0; padding-top:16px;
  border-top:1px solid var(--line-soft);
  font-size:11px; color:var(--accent); letter-spacing:.1em;
}

/* --- boutique --------------------------------------------------- */
.boutique-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:clamp(28px,5vw,80px);
  align-items:start;
}

.block-label{
  font-family:var(--sans);
  font-size:10px; letter-spacing:.3em; color:var(--muted);
  margin:0 0 26px; text-transform:uppercase;
}

.store-list{ list-style:none; margin:0; padding:0; border-top:1px solid var(--line); }
.store-list li{
  display:grid; grid-template-columns:1.4fr .5fr 1fr;
  align-items:baseline; gap:12px;
  padding:20px 4px;
  border-bottom:1px solid var(--line);
  transition:padding-left .45s var(--ease), background .45s var(--ease);
}
.store-list li:hover{ padding-left:14px; background:rgba(255,255,255,.4); }
.st-name{ font-size:clamp(15px,1.4vw,17.5px); letter-spacing:.1em; }
.st-city{
  font-family:var(--sans); font-size:10.5px; letter-spacing:.18em; color:var(--accent);
}
.st-note{
  font-size:11.5px; color:var(--muted); text-align:right; letter-spacing:.04em;
}

.salon{
  background:var(--deep);
  color:#EDE7DB;
  padding:clamp(30px,3.4vw,46px);
  position:relative;
}
.salon::after{
  content:""; position:absolute; inset:10px;
  border:1px solid rgba(237,231,219,.13);
  pointer-events:none;
}
.salon .block-label{ color:#A99C82; }
.salon h3{
  font-size:clamp(18px,1.8vw,22px); font-weight:400;
  line-height:1.7; letter-spacing:.08em; margin:0 0 20px;
}
.salon p{
  font-size:12.8px; line-height:2.2; color:#C3BBA9;
  margin:0 0 28px; letter-spacing:.05em;
}

.link-arrow{
  display:inline-flex; align-items:center; gap:14px;
  font-family:var(--sans); font-size:10.5px; letter-spacing:.22em;
  color:#EDE7DB; padding-bottom:8px;
  border-bottom:1px solid rgba(237,231,219,.3);
  transition:gap .4s var(--ease), border-color .4s var(--ease);
}
.link-arrow:hover{ gap:22px; border-color:#EDE7DB; }

/* --- promise ---------------------------------------------------- */
.promise{ background:var(--bg); text-align:center; }
.promise-num{ text-align:center; }

.promise-quote{
  margin:0 auto clamp(28px,3.6vw,44px);
  max-width:20em;
  font-size:clamp(24px,3.6vw,42px);
  line-height:1.62; letter-spacing:.07em;
  font-weight:400;
}
.promise-body{
  margin:0 auto clamp(52px,6vw,80px);
  max-width:38em;
  font-size:clamp(13.5px,1.25vw,15px);
  line-height:2.3; color:var(--ink-soft); letter-spacing:.05em;
}

.promise-lines{
  list-style:none; margin:0; padding:0;
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:clamp(18px,3vw,40px);
  border-top:1px solid var(--line-soft);
  padding-top:clamp(26px,3.4vw,40px);
  text-align:left;
}
.promise-lines li{
  display:flex; flex-direction:column; gap:12px;
  font-size:clamp(12.5px,1.15vw,14px); line-height:1.95; color:var(--ink-soft);
  letter-spacing:.05em;
}
.pl-num{
  font-family:var(--sans); font-size:9.5px; letter-spacing:.3em; color:var(--accent);
}

/* --- contact ---------------------------------------------------- */
.contact-wrap{ display:grid; grid-template-columns:.9fr 1.1fr; gap:clamp(32px,5vw,80px); align-items:start; }
.contact-head{ margin-bottom:0; }

.form{
  display:grid; grid-template-columns:1fr 1fr;
  gap:clamp(20px,2.6vw,32px);
}
.field{ display:flex; flex-direction:column; gap:10px; }
.field-full{ grid-column:1 / -1; }

.field label{
  font-family:var(--sans);
  font-size:10px; letter-spacing:.24em; color:var(--muted);
}

.field input,
.field select,
.field textarea{
  width:100%;
  font-family:var(--serif); font-size:14px; color:var(--ink);
  letter-spacing:.04em;
  background:transparent;
  border:0; border-bottom:1px solid var(--line);
  padding:8px 2px 10px;
  border-radius:0;
  transition:border-color .4s var(--ease);
  appearance:none;
}
.field textarea{ resize:vertical; line-height:2; }
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),
                   linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 9px) 18px, calc(100% - 4px) 18px;
  background-size:5px 5px, 5px 5px;
  background-repeat:no-repeat;
}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none; border-bottom-color:var(--ink);
}
.field input::placeholder,
.field textarea::placeholder{ color:#BDB5A6; }

.form-foot{
  grid-column:1 / -1;
  display:flex; align-items:center; gap:22px; flex-wrap:wrap;
  margin-top:6px;
}

.btn{
  font-family:var(--sans); font-size:11px; letter-spacing:.28em;
  color:var(--bg);
  background:var(--deep);
  padding:16px 42px;
  position:relative; overflow:hidden;
  transition:background .45s var(--ease);
}
.btn span{ position:relative; z-index:2; }
.btn::after{
  content:""; position:absolute; inset:0;
  background:var(--accent);
  transform:translateY(101%);
  transition:transform .5s var(--ease);
}
.btn:hover::after{ transform:translateY(0); }
.btn:hover span{ color:#FFFDF7; }

.form-note{
  margin:0; font-size:12px; color:var(--accent); letter-spacing:.06em;
  min-height:1em;
}

/* --- contact email ---------------------------------------------- */
.contact-email{
  margin-top:clamp(20px,3vw,32px);
  padding-top:clamp(18px,2.5vw,28px);
  border-top:1px solid var(--line);
}
.contact-email-label{
  font-family:var(--sans);
  font-size:10px; letter-spacing:.24em; color:var(--muted);
  margin:0 0 10px;
}
.contact-email-link{
  font-family:var(--serif);
  font-size:clamp(18px,2vw,24px);
  letter-spacing:.04em;
  color:var(--ink);
  text-decoration:none;
  border-bottom:1px solid var(--line);
  padding-bottom:4px;
  transition:color .4s var(--ease), border-color .4s var(--ease);
}
.contact-email-link:hover{
  color:var(--accent);
  border-bottom-color:var(--accent);
}

/* --- footer ----------------------------------------------------- */
.site-foot{
  background:var(--deep); color:#B9B0A0;
  padding:clamp(40px,5vw,64px) 0;
}
.foot-inner{
  display:flex; flex-direction:column; align-items:center; gap:14px;
  text-align:center;
}
.foot-brand{ display:flex; align-items:baseline; gap:10px; }
.fb-jp{ font-size:19px; letter-spacing:.22em; color:#EDE7DB; text-indent:.22em; }
.fb-en{ font-family:var(--sans); font-size:8.5px; letter-spacing:.42em; color:#8A8071; }
.foot-contact{ margin:0; }
.foot-contact a{
  font-family:var(--serif); font-size:14px; letter-spacing:.04em;
  color:#B9B0A0; text-decoration:none;
  transition:color .4s var(--ease);
}
.foot-contact a:hover{ color:#EDE7DB; }

.foot-line{
  margin:0; font-size:11.5px; letter-spacing:.12em; color:#8A8071;
}
.foot-copy{
  margin:0; font-family:var(--sans); font-size:9px;
  letter-spacing:.24em; color:#948A79;
}

.foot-links{
  display:flex; align-items:center; gap:12px;
  font-family:var(--sans); font-size:9px; letter-spacing:.18em;
  margin-top:6px;
}
.foot-links a{ color:#948A79; transition:color .3s var(--ease); }
.foot-links a:hover{ color:#EDE7DB; }
.foot-links i{ width:18px; height:1px; background:rgba(138,128,113,.4); }

/* --- reveal ----------------------------------------------------- */
.reveal{
  opacity:0;
  transform:translateY(22px);
  transition:opacity 1.1s var(--ease), transform 1.1s var(--ease);
  transition-delay:calc(var(--d, 0) * 110ms);
  will-change:opacity, transform;
}
.reveal.in{ opacity:1; transform:none; }

/* --- responsive ------------------------------------------------- */
@media (max-width:1024px){
  .philo-body{ grid-template-columns:1fr; }
  .cards{ grid-template-columns:1fr; }
  .drape{ height:200px; }
  .boutique-grid{ grid-template-columns:1fr; }
  .contact-wrap{ grid-template-columns:1fr; }
  .contact-head{ margin-bottom:8px; }
}

@media (max-width:760px){
  body{ font-size:15px; }
  .hero{ min-height:92svh; padding-top:104px; }
  .hero-side{ display:none; }
  .scroll-hint{ display:none; }
  .scroll-hint{ bottom:24px; }
  .nav{
    position:fixed; inset:0;
    flex-direction:column; justify-content:center; align-items:center;
    gap:26px;
    background:var(--bg);
    opacity:0; visibility:hidden;
    transition:opacity .45s var(--ease), visibility .45s;
    z-index:110;
  }
  .nav a{ font-size:15px; letter-spacing:.24em; color:var(--ink); }
  body.nav-open .nav{ opacity:1; visibility:visible; }
  body.nav-open{ overflow:hidden; }

  .burger{
    display:flex; flex-direction:column; justify-content:center; gap:6px;
    width:34px; height:34px; margin-left:auto; position:relative; z-index:130;
  }
  .burger span{
    display:block; width:22px; height:1px; background:var(--ink);
    transition:transform .4s var(--ease), opacity .3s;
  }
  body.nav-open .burger span:nth-child(1){ transform:translateY(3.5px) rotate(45deg); }
  body.nav-open .burger span:nth-child(2){ transform:translateY(-3.5px) rotate(-45deg); }

  .lang{ margin-left:0; }
  .site-head{ padding:16px var(--inset); }

  .values{ grid-template-columns:1fr; }
  .promise-lines{ grid-template-columns:1fr; gap:18px; }
  .store-list li{ grid-template-columns:1fr auto; row-gap:4px; }
  .st-note{ grid-column:1 / -1; text-align:left; }
  .form{ grid-template-columns:1fr; }
  .btn{ width:100%; }
}

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; transition:none; }
  .scroll-hint i::after{ animation:none; }
  .card, .drape::before, .drape::after, .btn::after{ transition:none; }
}