*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --cocoa:    #17100B;   
      --cocoa-m:  #261A12;   
      --cocoa-l:  #3D2719;   
      --caramel:  #7A5035;   
      --ivory:    #FDF8F3;   
      --ivory-d:  #F4EBE0;   
      --rose-bg:  #2A1018;   
      --rose:     #C4607A;   
      --rose-l:   #D98898;   
      --blush:    #EDAABB;   
      --gold:     #C4983A;
      --on-dark:  rgba(253,248,243,.92);   
      --on-dark-s:rgba(253,248,243,.70);   
      --on-dark-d:rgba(253,248,243,.46);   
      --on-ivory: #1E1410;                  
      --on-ivory-s:#6A5040;                 
      --serif: 'Cormorant Garamond', 'Noto Serif JP', serif;
      --sans:  'Noto Sans JP', sans-serif;
      --ease:  cubic-bezier(.22,1,.36,1);
    }
    html { scroll-behavior: smooth; }
    body { font-family: var(--sans); background: var(--cocoa); -webkit-font-smoothing: antialiased; }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    .u-label {
      font-family: var(--serif);
      font-size: 11px; letter-spacing: .3em;
      text-transform: uppercase;
      display: flex; align-items: center; gap: 14px;
      margin-bottom: 24px;
    }
    .u-label::before {
      content: ''; display: block;
      width: 24px; height: 1px;
      background: currentColor; opacity: .45;
      flex-shrink: 0;
    }
    .u-btn {
      display: inline-flex; align-items: center; gap: 10px;
      font-family: var(--sans); font-size: 12px; font-weight: 500;
      letter-spacing: .1em; padding: 14px 34px;
      transition: all .32s var(--ease);
    }
    .u-btn svg { width: 13px; height: 13px; flex-shrink: 0; transition: transform .28s; }
    .u-btn:hover svg { transform: translateX(5px); }
    .u-btn--rose { background: var(--rose); color: #fff; box-shadow: 0 4px 20px rgba(196,96,122,.3); }
    .u-btn--rose:hover { background: #ad4e68; color: #fff; transform: translateY(-2px); }
    .u-btn--ghost-light { border: 1px solid rgba(253,248,243,.2); color: var(--on-dark-s); }
    .u-btn--ghost-light:hover { border-color: rgba(253,248,243,.5); color: var(--on-dark); }
    .sn-hdr {
      position: fixed; top: 0; left: 0; right: 0; z-index: 200;
      height: 60px; padding: 0 48px;
      display: flex; align-items: center; justify-content: space-between;
      background: rgba(23,16,11,.92);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(255,240,220,.06);
      transition: border-color .3s;
    }
    .sn-hdr__logo {
      font-family: var(--serif); font-size: 20px; font-weight: 400;
      color: var(--on-dark); letter-spacing: .12em;
    }
    .sn-hdr__logo em { font-style: italic; color: var(--blush); }
    .sn-hdr__nav { display: flex; gap: 32px; }
    .sn-hdr__nav a {
      font-size: 11px; letter-spacing: .1em;
      color: var(--on-dark-d); transition: color .22s;
    }
    .sn-hdr__nav a:hover { color: var(--on-dark); }
    .sn-hdr__cta {
      font-size: 11px; letter-spacing: .08em;
      padding: 7px 18px;
      border: 1px solid rgba(196,96,122,.35);
      color: var(--rose-l); transition: all .25s;
    }
    .sn-hdr__cta:hover { background: var(--rose); color: #fff; border-color: var(--rose); }
    .sn-hero {
      background: var(--cocoa);
      min-height: 100vh;
      display: flex; flex-direction: column;
      align-items: center; justify-content: center;
      text-align: center;
      padding: 100px 48px 60px;
      position: relative; overflow: hidden;
    }
    .sn-hero::before {
      content: '';
      position: absolute; top: 44%; left: 50%; transform: translate(-50%,-50%);
      width: 1100px; height: 760px;
      background: radial-gradient(ellipse, rgba(196,96,122,.16) 0%, rgba(196,96,122,.06) 38%, transparent 70%);
      pointer-events: none;
    }
    .sn-hero::after {
      content: 'S';
      position: absolute; right: -60px; bottom: -80px;
      font-family: var(--serif); font-size: 520px; font-weight: 300; line-height: 1;
      color: transparent;
      -webkit-text-stroke: 1px rgba(196,96,122,.06);
      pointer-events: none; user-select: none;
    }
    .sn-hero__inner { position: relative; z-index: 1; }
    .sn-hero__eyebrow {
      font-family: var(--serif); font-size: 10.5px; letter-spacing: .32em;
      color: var(--rose-l); text-transform: uppercase;
      margin-bottom: 28px; opacity: .8;
    }
    .sn-hero__name {
      font-family: var(--serif);
      font-size: clamp(88px, 18vw, 176px);
      font-weight: 300; line-height: .95;
      color: var(--on-dark); letter-spacing: .08em;
      margin-bottom: 6px;
    }
    .sn-hero__name em { font-style: italic; color: var(--blush); }
    .sn-hero__tag {
      font-family: var(--serif);
      font-size: clamp(16px, 2.4vw, 22px); font-weight: 300; font-style: italic;
      color: var(--on-dark-s); letter-spacing: .14em;
      margin-bottom: 44px;
    }
    .sn-hero__vline {
      width: 1px; height: 56px;
      background: linear-gradient(to bottom, var(--gold), transparent);
      opacity: .5; margin: 0 auto 44px;
    }
    .sn-hero__desc {
      font-size: 15px; font-weight: 300; line-height: 2.1; letter-spacing: .07em;
      color: var(--on-dark-s); max-width: 460px; margin: 0 auto 48px;
    }
    .sn-hero__ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
    .sn-hero__scroll {
      margin-top: 60px; position: relative; z-index: 1;
      display: flex; flex-direction: column; align-items: center; gap: 10px;
      opacity: .3;
    }
    .sn-hero__scroll span { font-family: var(--serif); font-size: 9px; letter-spacing: .28em; color: var(--on-dark-d); text-transform: uppercase; }
    .sn-scroll-line {
      width: 1px; height: 44px;
      background: linear-gradient(to bottom, var(--rose), transparent);
      animation: pulse 2.2s ease-in-out infinite;
    }
    @keyframes pulse { 0%,100%{opacity:.3}50%{opacity:.9} }
    .sn-concept {
      background: var(--ivory);
      padding: 108px 48px;
    }
    .sn-concept__grid {
      max-width: 1000px; margin: 0 auto;
      display: grid; grid-template-columns: 1fr 1px 1fr; gap: 0 68px; align-items: center;
    }
    .sn-concept__sep { background: rgba(30,20,16,.1); align-self: stretch; }
    .sn-concept .u-label { color: var(--caramel); }
    .sn-concept__h {
      font-family: var(--serif);
      font-size: clamp(32px, 5vw, 56px); font-weight: 300; line-height: 1.3;
      color: var(--on-ivory); letter-spacing: .02em; margin-bottom: 24px;
    }
    .sn-concept__h em { font-style: italic; color: var(--rose); }
    .sn-concept__body {
      font-size: 15px; font-weight: 300; line-height: 2.2; letter-spacing: .06em;
      color: var(--on-ivory-s);
    }
    .sn-concept__quote-block {
      padding: 36px 0;
    }
    .sn-concept__quote {
      font-family: var(--serif);
      font-size: clamp(22px, 3.2vw, 34px); font-weight: 300; font-style: italic;
      line-height: 1.7; color: var(--on-ivory);
      letter-spacing: .03em;
      padding-left: 24px;
      border-left: 2px solid var(--rose);
      margin-bottom: 20px;
    }
    .sn-concept__quote em { font-style: normal; color: var(--rose); }
    .sn-concept__attr {
      font-family: var(--serif); font-size: 11px; letter-spacing: .18em;
      color: var(--on-ivory-s); opacity: .6; padding-left: 24px;
      text-transform: uppercase;
    }
    .sn-fields {
      background: var(--cocoa-m);
      padding: 108px 48px;
    }
    .sn-fields .u-label { color: var(--rose-l); }
    .sn-fields__head { max-width: 1000px; margin: 0 auto 52px; }
    .sn-fields__h {
      font-family: var(--serif);
      font-size: clamp(30px, 4.5vw, 52px); font-weight: 300;
      color: var(--on-dark); letter-spacing: .04em; line-height: 1.25;
    }
    .sn-fields__h em { font-style: italic; color: var(--blush); }
    .sn-fields__grid {
      max-width: 1000px; margin: 0 auto;
      display: grid; grid-template-columns: repeat(4,1fr);
      gap: 1px; background: rgba(255,240,220,.05);
      border: 1px solid rgba(255,240,220,.05);
    }
    .sn-fcard {
      background: var(--cocoa-m);
      padding: 36px 24px;
      position: relative; overflow: hidden;
      transition: background .35s;
    }
    .sn-fcard:hover { background: var(--cocoa-l); }
    .sn-fcard--on {
      background: linear-gradient(160deg, rgba(196,96,122,.1) 0%, var(--cocoa-m) 100%);
    }
    .sn-fcard--on::after {
      content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
      background: linear-gradient(90deg, var(--rose), transparent);
    }
    .sn-fcard__num {
      font-family: var(--serif); font-size: 10px; letter-spacing: .18em;
      color: var(--on-dark-d); margin-bottom: 22px; display: block;
    }
    .sn-fcard__icon { margin-bottom: 16px; color: var(--gold); height: 30px; line-height: 0; }
    .sn-fcard__icon svg { width: 30px; height: 30px; display: block; }
    .sn-fcard--on .sn-fcard__icon { color: var(--blush); }
    .sn-fcard__name {
      font-family: var(--serif); font-size: 22px; font-weight: 400;
      color: var(--on-dark); letter-spacing: .06em; margin-bottom: 10px;
    }
    .sn-fcard--on .sn-fcard__name { color: var(--blush); }
    .sn-fcard__desc {
      font-size: 13px; font-weight: 300; line-height: 1.85;
      color: rgba(253,248,243,.68); margin-bottom: 20px;
    }
    .sn-fcard__badge {
      font-family: var(--serif); font-size: 9px; letter-spacing: .16em;
      text-transform: uppercase; padding: 4px 10px;
      border: 1px solid currentColor; display: inline-block; color: var(--rose-l);
    }
    .sn-fcard:not(.sn-fcard--on) .sn-fcard__badge { color: var(--on-dark-d); }
    .sn-onesong {
      background: var(--rose-bg);
      padding: 108px 48px;
      position: relative; overflow: hidden;
    }
    .sn-onesong::before {
      content: '';
      position: absolute; inset: 0;
      background:
        radial-gradient(ellipse 65% 60% at 10% 50%, rgba(196,96,122,.18) 0%, transparent 65%),
        radial-gradient(ellipse 45% 55% at 90% 50%, rgba(61,39,25,.5) 0%, transparent 65%);
      pointer-events: none;
    }
    .sn-onesong::after {
      content: '♪';
      position: absolute; right: -30px; top: 50%; transform: translateY(-50%);
      font-family: var(--serif); font-size: 360px; line-height: 1;
      color: transparent; -webkit-text-stroke: 1px rgba(196,96,122,.08);
      pointer-events: none; user-select: none;
    }
    .sn-onesong__inner {
      max-width: 1000px; margin: 0 auto;
      display: grid; grid-template-columns: 1fr 1fr;
      gap: 80px; align-items: center;
      position: relative; z-index: 1;
    }
    .sn-onesong .u-label { color: rgba(237,170,187,.65); }
    .sn-onesong__name {
      font-family: var(--serif);
      font-size: clamp(64px, 11vw, 108px); font-weight: 300; line-height: .9;
      color: var(--on-dark); letter-spacing: .06em; margin-bottom: 10px;
    }
    .sn-onesong__logo {
      width: min(360px, 100%);
      height: auto;
      border-radius: 8px;
      box-shadow: 0 22px 54px rgba(0,0,0,.18);
    }
    .sn-onesong__logo--badge {
      width: min(190px, 48vw);
      border-radius: 14px;
      box-shadow: 0 22px 54px rgba(0,0,0,.28);
    }
    .sn-onesong__sub {
      font-family: var(--serif); font-size: 14px; font-style: italic;
      color: var(--on-dark-d); letter-spacing: .12em; margin-bottom: 32px;
    }
    .sn-onesong__body {
      font-size: 15px; font-weight: 300; line-height: 2.15; letter-spacing: .06em;
      color: var(--on-dark-s); margin-bottom: 40px;
    }
    .sn-onesong__ctas { display: flex; gap: 12px; flex-wrap: wrap; }
    .sn-onesong__features { display: flex; flex-direction: column; gap: 2px; }
    .sn-feature {
      padding: 20px 22px;
      border: 1px solid rgba(253,248,243,.07);
      display: flex; align-items: flex-start; gap: 16px;
      transition: background .28s, border-color .28s;
    }
    .sn-feature:hover {
      background: rgba(196,96,122,.1); border-color: rgba(196,96,122,.25);
    }
    .sn-feature__icon { flex-shrink: 0; margin-top: 1px; color: var(--blush); width: 24px; height: 24px; line-height: 0; }
    .sn-feature__icon svg { width: 24px; height: 24px; display: block; }
    .sn-feature:hover .sn-feature__icon { color: var(--blush); }
    .sn-feature__text {}
    .sn-feature__name {
      font-size: 14.5px; font-weight: 500; letter-spacing: .05em;
      color: var(--on-dark); margin-bottom: 3px;
    }
    .sn-feature__desc {
      font-size: 12.5px; font-weight: 300; line-height: 1.7;
      color: rgba(253,248,243,.64);
    }
    .sn-philo {
      background: var(--ivory-d);
      padding: 120px 48px;
      text-align: center;
    }
    .sn-philo .u-label { color: var(--caramel); justify-content: center; }
    .sn-philo .u-label::before { display: none; }
    .sn-philo .u-label::after { content: ''; display: block; width: 24px; height: 1px; background: currentColor; opacity: .45; }
    .sn-philo__quote {
      font-family: var(--serif);
      font-size: clamp(30px, 5.5vw, 60px); font-weight: 300; font-style: italic;
      line-height: 1.6; letter-spacing: .03em;
      color: var(--on-ivory); max-width: 800px; margin: 0 auto 36px;
      position: relative;
    }
    .sn-philo__quote::before {
      content: '\201C'; position: absolute; top: -28px; left: -16px;
      font-size: 120px; line-height: 1;
      color: var(--rose); opacity: .1; pointer-events: none;
    }
    .sn-philo__quote em { font-style: normal; color: var(--rose); }
    .sn-philo__divider {
      width: 72px; height: 8px; margin: 0 auto 32px; position: relative; opacity: .9;
      background: linear-gradient(90deg, transparent, rgba(196,152,58,.7) 42%, rgba(196,152,58,.7) 58%, transparent) center/100% 1px no-repeat;
    }
    .sn-philo__divider::after {
      content: ''; position: absolute; left: 50%; top: 50%;
      transform: translate(-50%,-50%) rotate(45deg);
      width: 6px; height: 6px; background: var(--gold);
    }
    .sn-philo__body {
      font-size: 15px; font-weight: 300; line-height: 2.2; letter-spacing: .07em;
      color: var(--on-ivory-s); max-width: 520px; margin: 0 auto;
    }
    .sn-orn {
      width: 72px; height: 8px; margin: 0 auto 28px; position: relative; opacity: .9;
      background: linear-gradient(90deg, transparent, rgba(196,152,58,.7) 42%, rgba(196,152,58,.7) 58%, transparent) center/100% 1px no-repeat;
    }
    .sn-orn::after {
      content: ''; position: absolute; left: 50%; top: 50%;
      transform: translate(-50%,-50%) rotate(45deg);
      width: 6px; height: 6px; background: var(--gold);
    }
    .sn-concept, .sn-philo { position: relative; }
    .sn-concept::after, .sn-philo::after {
      content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
      width: 160px; height: 1px;
      background: linear-gradient(90deg, transparent, rgba(196,152,58,.55), transparent);
    }
    .sn-cta {
      background: var(--cocoa);
      padding: 112px 48px 120px;
      text-align: center; position: relative; overflow: hidden;
    }
    .sn-cta::before {
      content: '';
      position: absolute; inset: 0;
      background: radial-gradient(ellipse 55% 70% at 50% 85%, rgba(196,96,122,.12) 0%, transparent 70%);
      pointer-events: none;
    }
    .sn-cta::after {
      content: 'SONORY';
      position: absolute; bottom: -52px; left: 50%; transform: translateX(-50%);
      font-family: var(--serif); font-size: 170px; font-weight: 300;
      color: transparent; -webkit-text-stroke: 1px rgba(196,96,122,.055);
      white-space: nowrap; letter-spacing: .1em;
      pointer-events: none; user-select: none;
    }
    .sn-cta__inner { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }
    .sn-cta .u-label { color: rgba(196,96,122,.65); justify-content: center; }
    .sn-cta .u-label::before { display: none; }
    .sn-cta__h {
      font-family: var(--serif);
      font-size: clamp(32px, 5.5vw, 60px); font-weight: 300; line-height: 1.35;
      color: var(--on-dark); letter-spacing: .04em; margin-bottom: 14px;
    }
    .sn-cta__h em { font-style: italic; color: var(--blush); }
    .sn-cta__sub {
      font-size: 15px; font-weight: 300; letter-spacing: .08em;
      color: var(--on-dark-d); margin-bottom: 44px; line-height: 1.9;
    }
    .sn-cta__btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
    .sn-footer {
      background: var(--cocoa);
      position: relative;
      padding: 46px 48px 42px;
      display: flex; align-items: flex-end;
      justify-content: space-between; flex-wrap: wrap; gap: 26px;
    }
    .sn-footer::before {
      content: ''; position: absolute; top: 0; left: 48px; right: 48px; height: 1px;
      background: linear-gradient(90deg, rgba(196,152,58,.4), rgba(255,240,220,.06) 38%, transparent);
    }
    .sn-footer__brand {
      font-family: var(--serif); font-size: 24px; line-height: 1;
      color: var(--on-dark-s); letter-spacing: .12em;
    }
    .sn-footer__brand em { font-style: italic; color: var(--rose-l); }
    .sn-footer__tag {
      font-family: var(--serif); font-style: italic; font-size: 12px;
      color: var(--on-dark-d); letter-spacing: .1em; margin-top: 9px;
    }
    .sn-footer__right { text-align: right; }
    .sn-footer__nav { display: flex; gap: 22px; justify-content: flex-end; flex-wrap: wrap; margin-bottom: 14px; }
    .sn-footer__nav a {
      font-family: var(--serif); font-size: 12px; letter-spacing: .14em;
      text-transform: uppercase; color: var(--on-dark-s); transition: color .2s;
    }
    .sn-footer__nav a:hover { color: var(--blush); }
    .sn-footer__copy {
      font-size: 11px; font-weight: 300;
      color: var(--on-dark-d);
      letter-spacing: .04em; line-height: 1.8;
    }
    .sn-footer__copy a { border-bottom: 1px solid rgba(255,240,220,.08); transition: border-color .2s; }
    .sn-footer__copy a:hover { border-color: rgba(255,240,220,.3); }
    @media (max-width: 640px) {
      .sn-footer { flex-direction: column; align-items: flex-start; }
      .sn-footer__right { text-align: left; }
      .sn-footer__nav { justify-content: flex-start; }
    }
    .sr {
      opacity: 0; transform: translateY(22px);
      transition: opacity .85s var(--ease), transform .85s var(--ease);
    }
    .sr.on { opacity: 1; transform: none; }
    .sr.d1 { transition-delay: .1s; }
    .sr.d2 { transition-delay: .2s; }
    .ha { opacity: 0; animation: ha .95s var(--ease) forwards; }
    .ha0 { animation-delay: .08s; } .ha1 { animation-delay: .24s; }
    .ha2 { animation-delay: .42s; } .ha3 { animation-delay: .60s; }
    .ha4 { animation-delay: .78s; } .ha5 { animation-delay: .96s; }
    @keyframes ha { from{opacity:0;transform:translateY(26px)} to{opacity:1;transform:none} }
    @media (max-width: 860px) {
      .sn-hdr__nav { display: none; }
      .sn-concept__grid { grid-template-columns: 1fr; gap: 44px; }
      .sn-concept__sep { display: none; }
      .sn-fields__grid { grid-template-columns: repeat(2,1fr); }
      .sn-onesong__inner { grid-template-columns: 1fr; gap: 52px; }
      .sn-onesong::after { display: none; }
    }
    @media (max-width: 640px) {
      .sn-hdr, .sn-footer { padding: 0 20px; }
      .sn-footer { padding: 28px 20px; }
      .sn-hero, .sn-concept, .sn-fields, .sn-onesong, .sn-philo, .sn-cta { padding: 80px 20px; }
      .sn-fields__grid { grid-template-columns: 1fr; }
      .sn-footer { flex-direction: column; align-items: center; }
      .sn-footer__copy { text-align: center; }
    }
    .sn-hdr a:focus-visible,
    .sn-footer a:focus-visible,
    .u-btn:focus-visible {
      outline: 3px solid rgba(237,170,187,.88);
      outline-offset: 3px;
    }
    .sn-hdr__nav a,
    .sn-hdr__cta,
    .sn-footer__nav a,
    .u-btn {
      min-height: 44px;
      display: inline-flex;
      align-items: center;
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      [class^="sn-"],
      [class*=" sn-"],
      [class^="sn-"]::before,
      [class^="sn-"]::after,
      [class*=" sn-"]::before,
      [class*=" sn-"]::after,
      .sr,
      .ha {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
      }

      .sr,
      .ha {
        opacity: 1 !important;
        transform: none !important;
      }
    }