/* Hou²Hou² — tone-themed design system
   Palette pulled from the 聲 logo: paper #FBFAF8, signal red #E1342D,
   tone-graduated red ramp from the three dashes (#E77772 → #A50406). */

:root{
  --paper:#FBFAF8;
  --paper-2:#F5F2EB;          /* subtle alt section */
  --ink:#1A1714;
  --ink-soft:#5C544B;
  --ink-faint:#8A8177;
  --red:#E1342D;             /* signal accent */
  --red-deep:#C42117;        /* interactive fills (AA on white) */
  --line:#E7E1D7;
  --line-strong:#D9D2C5;
  /* tone ramp: high pitch = light, low pitch = dark */
  --t1:#E77772; --t2:#E1342D; --t3:#D02A22; --t4:#B81C16; --t5:#A50406; --t6:#7C0406;
  --maxw:1120px; --read:46rem;
  --r:14px;
  --shadow:0 1px 2px rgba(26,23,20,.04), 0 12px 32px -16px rgba(26,23,20,.18);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;
  font-feature-settings:"cv05","ss01";
}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{font-family:"Bricolage Grotesque","Inter",sans-serif;font-weight:800;line-height:1.04;letter-spacing:-.02em;margin:0}
h1{font-size:clamp(2.5rem,6vw,4.4rem)}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem);letter-spacing:-.025em}
h3{font-size:1.22rem;letter-spacing:-.01em;font-weight:700}
p{margin:0 0 1.05em}
.mono{font-family:"Space Mono",ui-monospace,Menlo,monospace}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:84px 0}
.section--tight{padding:56px 0}
.alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* tone-colored superscript notation */
sup.t1{color:var(--t1)}sup.t2{color:var(--t2)}sup.t3{color:var(--t3)}
sup.t4{color:var(--t4)}sup.t5{color:var(--t5)}sup.t6{color:var(--t6)}
sup.tn{font-family:"Space Mono",monospace;font-size:.62em;font-weight:700;top:-.5em}

/* eyebrow + tone divider */
.eyebrow{font-family:"Space Mono",monospace;font-size:.78rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ink-faint);margin:0 0 18px}
.tdiv{display:inline-flex;gap:6px;align-items:center}
.tdiv span{height:5px;width:28px;border-radius:3px}
.tdiv span:nth-child(1){background:var(--t1)}
.tdiv span:nth-child(2){background:var(--t2);width:22px}
.tdiv span:nth-child(3){background:var(--t5);width:16px}

/* header */
.hdr{position:sticky;top:0;z-index:50;background:rgba(251,250,248,.82);
  backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
.hdr.scrolled{border-color:var(--line)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:"Bricolage Grotesque",sans-serif;
  font-weight:800;font-size:1.32rem;letter-spacing:-.03em}
.brand img{width:30px;height:30px}
.brand sup{font-family:"Space Mono",monospace;font-size:.5em;color:var(--t2);top:-.7em}
.nav{display:flex;align-items:center;gap:28px}
.nav a{text-decoration:none;color:var(--ink-soft);font-size:.95rem;font-weight:500}
.nav a:hover{color:var(--ink)}
.nav .btn{color:#fff}
.navtoggle{display:none;background:none;border:0;font-size:1.5rem;cursor:pointer;color:var(--ink)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;background:var(--red-deep);color:#fff;
  text-decoration:none;font-weight:600;font-size:.97rem;padding:12px 22px;border-radius:999px;
  border:1px solid var(--red-deep);transition:transform .12s ease,background .15s,box-shadow .2s;white-space:nowrap}
.btn:hover{background:#a91a12;transform:translateY(-1px);box-shadow:0 10px 22px -12px rgba(196,33,23,.7)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn--ghost:hover{background:var(--paper-2);border-color:var(--ink-faint);box-shadow:none}
.btn--lg{padding:15px 30px;font-size:1.05rem}

/* hero */
.hero{padding:64px 0 28px}
.hero .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{margin:0 0 22px}
.hero .lede{font-size:1.22rem;color:var(--ink-soft);max-width:34ch;margin:0 0 30px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-art{position:relative;display:flex;flex-direction:column;align-items:center;
  background:linear-gradient(180deg,#fff,var(--paper-2));border:1px solid var(--line);
  border-radius:var(--r);padding:34px 28px 26px;box-shadow:var(--shadow)}
.hero-art img.mark{width:118px;height:118px;margin-bottom:6px}
.hero-art .cap{font-family:"Space Mono",monospace;font-size:.74rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink-faint);margin-top:10px}

/* tone contour strip */
.tones{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:6px}
.tone{display:flex;flex-direction:column;align-items:center;gap:6px;width:74px}
.tone svg{width:64px;height:40px}
.tone .lab{font-family:"Space Mono",monospace;font-size:.72rem;color:var(--ink-soft)}
.tone .ex{font-size:.84rem;color:var(--ink-faint)}
.draw{stroke-dasharray:120;stroke-dashoffset:120;animation:draw 1.1s ease forwards}
.tone:nth-child(2) .draw{animation-delay:.12s}.tone:nth-child(3) .draw{animation-delay:.24s}
.tone:nth-child(4) .draw{animation-delay:.36s}.tone:nth-child(5) .draw{animation-delay:.48s}
.tone:nth-child(6) .draw{animation-delay:.6s}
@keyframes draw{to{stroke-dashoffset:0}}

/* context line */
.context{font-size:1.15rem;color:var(--ink-soft);max-width:60ch}
.context b{color:var(--ink);font-weight:700}

/* feature grid */
.cols{display:grid;gap:22px}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.card h3{margin:0 0 8px}
.card p{margin:0;color:var(--ink-soft);font-size:.97rem}
.card .num{font-family:"Space Mono",monospace;color:var(--red);font-size:.8rem;letter-spacing:.1em}

/* journey */
.journey{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:14px}
.journey .leg{border:1px solid var(--line);border-radius:var(--r);padding:26px;background:#fff}
.journey .leg .tag{font-family:"Space Mono",monospace;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--red)}
.journey .leg h3{margin:8px 0 6px;font-size:1.3rem}
.journey ul{margin:14px 0 0;padding:0;list-style:none}
.journey li{padding:7px 0;border-top:1px solid var(--line);color:var(--ink-soft);font-size:.95rem}

/* phrase cards */
.phrases{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:18px}
.phrase{border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;background:#fff}
.phrase .hz{font-size:1.5rem;font-weight:600;letter-spacing:.02em}
.phrase .jp{font-family:"Space Mono",monospace;color:var(--red-deep);font-size:.98rem;margin-top:2px}
.phrase .en{color:var(--ink);font-weight:600;margin-top:8px}
.phrase .nt{color:var(--ink-faint);font-size:.88rem;margin-top:3px}
.grouplab{font-family:"Space Mono",monospace;font-size:.8rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-faint);margin:34px 0 4px}

/* comparison table */
.tablewrap{overflow-x:auto;margin-top:18px;border:1px solid var(--line);border-radius:var(--r)}
table.cmp{border-collapse:collapse;width:100%;min-width:520px;font-size:.96rem;background:#fff}
table.cmp th,table.cmp td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);vertical-align:top}
table.cmp thead th{background:var(--paper-2);font-family:"Bricolage Grotesque",sans-serif;font-size:.95rem}
table.cmp tr:last-child td{border-bottom:0}
table.cmp td:first-child{font-weight:600;width:30%}

/* pricing */
.plans{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:24px;max-width:760px}
.plan{border:1px solid var(--line);border-radius:var(--r);padding:30px;background:#fff;position:relative}
.plan.feature{border-color:var(--red);box-shadow:var(--shadow)}
.plan .badge{position:absolute;top:-12px;right:22px;background:var(--red-deep);color:#fff;
  font-family:"Space Mono",monospace;font-size:.7rem;letter-spacing:.1em;padding:4px 12px;border-radius:999px}
.plan .price{font-family:"Bricolage Grotesque",sans-serif;font-weight:800;font-size:2.6rem;letter-spacing:-.03em}
.plan .per{color:var(--ink-faint);font-size:1rem;font-weight:500}
.plan .save{color:var(--red-deep);font-weight:600;font-size:.92rem;margin-top:4px}
.plan ul{list-style:none;padding:0;margin:18px 0 0}
.plan li{padding:7px 0 7px 26px;position:relative;color:var(--ink-soft);font-size:.95rem}
.plan li:before{content:"";position:absolute;left:0;top:13px;width:12px;height:12px;border-radius:50%;
  background:var(--t2);opacity:.85}

/* faq */
.faq{max-width:var(--read);margin-top:18px}
.faq details{border-bottom:1px solid var(--line);padding:6px 0}
.faq summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:600;font-size:1.06rem;
  display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--red);font-family:"Space Mono",monospace;font-size:1.3rem;transition:transform .2s}
.faq details[open] summary:after{content:"–"}
.faq details p{color:var(--ink-soft);margin:0 0 16px}

/* article */
.article{max-width:var(--read);margin:0 auto}
.article .lede{font-size:1.28rem;color:var(--ink);font-weight:500;margin:0 0 8px;line-height:1.5}
.article .answer{background:var(--paper-2);border-left:3px solid var(--red);border-radius:0 10px 10px 0;
  padding:18px 22px;margin:26px 0;font-size:1.08rem}
.article h2{margin:46px 0 14px;font-size:clamp(1.5rem,2.6vw,2rem)}
.article h3{margin:30px 0 10px}
.article p,.article li{color:var(--ink-soft)}
.article li{margin:6px 0}
.article strong{color:var(--ink)}
.article .softcta{border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;margin:34px 0;background:#fff}
.article .softcta a{color:var(--red-deep);font-weight:600;text-decoration:none}
.article .softcta a:hover{text-decoration:underline}

.crumbs{font-size:.84rem;color:var(--ink-faint);margin-bottom:22px}
.crumbs a{color:var(--ink-faint);text-decoration:none}.crumbs a:hover{color:var(--red)}

.related{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.related a{font-size:.9rem;text-decoration:none;border:1px solid var(--line);border-radius:999px;
  padding:8px 16px;color:var(--ink-soft)}
.related a:hover{border-color:var(--red);color:var(--red-deep)}

/* cta band */
.band{background:var(--ink);color:var(--paper);border-radius:20px;padding:54px 44px;text-align:center}
.band h2{color:var(--paper)}.band p{color:#cdc6bc;max-width:48ch;margin:14px auto 26px}
.band .btn{background:var(--red);border-color:var(--red)}
.band .btn:hover{background:#ef4a42}

/* legal pages */
.legal{max-width:var(--read);margin:0 auto}
.legal h2{margin:40px 0 12px;font-size:1.5rem}
.legal h3{margin:26px 0 8px}
.legal p,.legal li{color:var(--ink-soft)}
.legal .meta{font-family:"Space Mono",monospace;font-size:.82rem;color:var(--ink-faint);margin-bottom:30px}
.legal .tldr{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;margin:24px 0}
.legal a{color:var(--red-deep)}
.note{background:#fff;border:1px dashed var(--line-strong);border-radius:10px;padding:14px 18px;
  font-size:.9rem;color:var(--ink-faint);margin:18px 0}

/* footer */
.ftr{border-top:1px solid var(--line);background:var(--paper-2);padding:56px 0 34px;margin-top:10px}
.ftr .grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.ftr h4{font-family:"Space Mono",monospace;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-faint);margin:0 0 14px;font-weight:700}
.ftr a{display:block;text-decoration:none;color:var(--ink-soft);font-size:.92rem;padding:5px 0}
.ftr a:hover{color:var(--red)}
.ftr .about{color:var(--ink-soft);font-size:.92rem;max-width:30ch}
.ftr .brand{margin-bottom:14px}
.ftr .legal-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);font-size:.85rem;color:var(--ink-faint)}

/* responsive */
@media(max-width:860px){
  .hero .grid{grid-template-columns:1fr;gap:34px}
  .hero-art{order:-1}
  .cols-3,.cols-2,.journey,.phrases,.plans{grid-template-columns:1fr}
  .ftr .grid{grid-template-columns:1fr 1fr}
  .nav{display:none}.nav.open{display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;
    background:var(--paper);border-bottom:1px solid var(--line);padding:18px 24px;gap:14px;align-items:flex-start}
  .navtoggle{display:block}
  .section{padding:60px 0}
}
@media(max-width:520px){.ftr .grid{grid-template-columns:1fr}.band{padding:40px 22px}}

:focus-visible{outline:2.5px solid var(--red);outline-offset:2px;border-radius:4px}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .draw{stroke-dashoffset:0}
}