/* ===========================================================
   Shanke 拍貼機 — 多哥科技工作室旗下日系拍貼機品牌
   Design system: 和モダン (Japanese modern)
   =========================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  /* 墨 ink */
  --ink:        #171310;
  --ink-2:      #2B2420;
  --ink-3:      #4A413A;
  --sumi:       #6F655B;
  --sumi-lt:    #938madeup;

  /* 生成り paper */
  --paper:      #FAF6EF;
  --paper-2:    #F4EDE1;
  --paper-3:    #EBE1D1;
  --washi:      #FFFDF9;

  /* 金 gold (from brand mark) */
  --gold:       #C0912F;
  --gold-lt:    #EBC469;
  --gold-glow:  #FFD37A;

  /* 朱 vermilion */
  --shu:        #BC4326;
  --shu-lt:     #D9613F;

  --line:       rgba(23, 19, 16, .11);
  --line-2:     rgba(23, 19, 16, .06);

  --maxw:       1140px;
  --gut:        clamp(20px, 5vw, 44px);

  --serif: "Shippori Mincho", "Noto Serif TC", "Noto Serif CJK TC", "Noto Serif CJK JP",
           "Songti TC", "Times New Roman", serif;
  --sans:  "Noto Sans TC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC",
           "Microsoft JhengHei", sans-serif;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
}
:root { --sumi-lt: #938A7E; }

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; line-height: 1.32; margin: 0; letter-spacing: .01em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; }
::selection { background: var(--gold-glow); color: var(--ink); }

/* paper grain — extremely subtle */
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  opacity: .035; mix-blend-mode: multiply;
  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='.82' numOctaves='3'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 3. Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
.section { position: relative; z-index: 1; padding: clamp(72px, 11vw, 132px) 0; }
.section--tint { background: linear-gradient(180deg, var(--paper-2), var(--paper)); }
.section--ink  { background: var(--ink); color: var(--paper); }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

/* ---------- 4. Typography helpers ---------- */
.eyebrow {
  font-family: var(--sans); font-size: 11px; font-weight: 700;
  letter-spacing: .3em; text-transform: uppercase; color: var(--gold);
  display: flex; align-items: center; gap: .8em; margin-bottom: 20px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: currentColor; flex: none; }
.section--ink .eyebrow { color: var(--gold-lt); }

.h-xl { font-size: clamp(2.1rem, 6.4vw, 4.1rem); letter-spacing: -.005em; }
.h-lg { font-size: clamp(1.72rem, 4.1vw, 2.75rem); }
.h-md { font-size: clamp(1.24rem, 2.1vw, 1.6rem); }
.h-sm { font-size: 1.06rem; }

.lede { font-size: clamp(1rem, 1.35vw, 1.115rem); color: var(--ink-3); max-width: 62ch; }
.muted { color: var(--sumi); }
.small { font-size: .875rem; line-height: 1.75; }
.tiny  { font-size: .795rem; line-height: 1.7; color: var(--sumi); }

/* 縦書き vertical decorative label */
.tate {
  writing-mode: vertical-rl; font-family: var(--serif); font-size: .8rem;
  letter-spacing: .42em; color: var(--sumi-lt);
}

/* placeholder marker for details the owner must fill in */
.tbd {
  display: inline-block; padding: .06em .5em; border: 1px dashed var(--gold);
  border-radius: 4px; background: rgba(235,196,105,.15);
  font-family: var(--sans); font-size: .86em; font-weight: 600; color: #8A6410;
  white-space: nowrap;
}

/* ---------- 5. Buttons ---------- */
.btn {
  --bg: var(--ink); --fg: var(--paper);
  position: relative; display: inline-flex; align-items: center; gap: .62em;
  padding: 15px 28px; border-radius: 999px; background: var(--bg); color: var(--fg);
  font-size: .945rem; font-weight: 600; letter-spacing: .02em;
  transition: transform .42s var(--ease-out), box-shadow .42s var(--ease-out), background .3s;
  will-change: transform; overflow: hidden; isolation: isolate;
}
.btn::after {
  content: ""; position: absolute; inset: 0; z-index: -1; border-radius: inherit;
  background: linear-gradient(120deg, var(--gold), var(--shu));
  opacity: 0; transition: opacity .42s var(--ease-out);
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 14px 32px -14px rgba(23,19,16,.5); }
.btn:hover::after { opacity: 1; }
.btn__arrow { transition: transform .42s var(--ease-out); }
.btn:hover .btn__arrow { transform: translateX(4px); }

.btn--ghost { --bg: transparent; --fg: var(--ink); box-shadow: inset 0 0 0 1px var(--line); }
.btn--ghost:hover { --fg: var(--paper); }
.btn--gold { --bg: linear-gradient(120deg, var(--gold), #A9761F); --fg: #FFF9EC; }
.btn--gold::after { background: linear-gradient(120deg, var(--shu), var(--gold)); }
.btn--sm { padding: 11px 20px; font-size: .875rem; }

/* text link with gold sweep underline */
.tlink { position: relative; font-weight: 600; color: var(--shu); white-space: nowrap; }
.tlink::after {
  content: ""; position: absolute; left: 0; bottom: -2px; width: 100%; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: left;
  transition: transform .4s var(--ease-out);
}
.tlink:hover::after { transform: scaleX(1); }

/* ---------- 6. Header ---------- */
.hdr {
  position: fixed; inset: 0 0 auto; z-index: 60;
  padding: 16px 0; transition: background .45s var(--ease), box-shadow .45s var(--ease), padding .45s var(--ease);
}
.hdr::before {
  content: ""; position: absolute; inset: 0; opacity: 0;
  background: rgba(250,246,239,.82); backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--line-2); transition: opacity .45s var(--ease);
}
.hdr.is-stuck { padding: 9px 0; }
.hdr.is-stuck::before { opacity: 1; }
.hdr__in { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 20px; }

.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand__mark { width: 34px; height: 34px; border-radius: 10px; flex: none; box-shadow: 0 3px 12px -4px rgba(23,19,16,.45); }
.brand__txt { display: flex; flex-direction: column; line-height: 1.12; }
.brand__name { font-family: var(--serif); font-size: 1.16rem; font-weight: 700; letter-spacing: .09em; }
.brand__sub { font-size: .615rem; letter-spacing: .26em; color: var(--sumi-lt); text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative; padding: 8px 13px; border-radius: 999px; font-size: .9rem; font-weight: 500;
  color: var(--ink-3); transition: color .3s, background .3s;
}
.nav a::after {
  content: ""; position: absolute; left: 13px; right: 13px; bottom: 4px; height: 1px;
  background: var(--gold); transform: scaleX(0); transition: transform .38s var(--ease-out);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { transform: scaleX(1); }
.hdr .btn { margin-left: 6px; }
.navtoggle { display: none; width: 42px; height: 42px; border-radius: 12px; box-shadow: inset 0 0 0 1px var(--line); }
.navtoggle span, .navtoggle span::before, .navtoggle span::after {
  display: block; width: 17px; height: 1.5px; background: var(--ink); border-radius: 2px; margin-inline: auto;
}
.navtoggle span { position: relative; }
.navtoggle span::before, .navtoggle span::after { content: ""; position: absolute; left: 0; }
.navtoggle span::before { top: -5.5px; } .navtoggle span::after { top: 5.5px; }

@media (max-width: 940px) {
  .nav, .hdr .btn { display: none; }
  .navtoggle { display: grid; place-items: center; }
  .nav.is-open {
    display: flex; flex-direction: column; align-items: stretch; gap: 2px;
    position: absolute; top: calc(100% + 10px); right: 0; min-width: 220px; padding: 12px;
    background: var(--washi); border: 1px solid var(--line); border-radius: 18px;
    box-shadow: 0 26px 60px -26px rgba(23,19,16,.4);
  }
  .nav.is-open a { padding: 11px 14px; }
}

/* ---------- 7. Entrance curtain ---------- */
.curtain {
  position: fixed; inset: 0; z-index: 200; background: var(--ink);
  display: grid; place-items: center;
  clip-path: inset(0 0 0 0);
  transition: clip-path 1.05s var(--ease-out);
}
.curtain__mark { width: 62px; height: 62px; border-radius: 18px; animation: pop .9s var(--ease-out) both; }
.curtain__flash {
  position: absolute; width: 12px; height: 12px; border-radius: 50%;
  background: var(--gold-glow); filter: blur(2px);
  animation: flash 1.15s var(--ease-out) both;
}
.curtain.is-done { clip-path: inset(0 0 100% 0); }
@keyframes pop { from { opacity: 0; transform: scale(.72) rotate(-8deg); } to { opacity: 1; transform: none; } }
@keyframes flash {
  0%   { opacity: 0; transform: scale(1); }
  38%  { opacity: .95; }
  100% { opacity: 0; transform: scale(46); }
}

/* ---------- 8. Reveal ----------
   Visible by DEFAULT so content never disappears if JS fails or is blocked.
   The hidden-then-animate state is only applied once app.js confirms it is running
   (adds .js-ready to <html>), which happens before first paint via defer. */
.rv { opacity: 1; transform: none; transition: opacity .82s var(--ease-out), transform .82s var(--ease-out); }
.js-ready .rv { opacity: 0; transform: translateY(20px); }
.js-ready .rv.in { opacity: 1; transform: none; }
.rv[data-d="1"] { transition-delay: .08s } .rv[data-d="2"] { transition-delay: .16s }
.rv[data-d="3"] { transition-delay: .24s } .rv[data-d="4"] { transition-delay: .32s }
.rv[data-d="5"] { transition-delay: .40s } .rv[data-d="6"] { transition-delay: .48s }

/* ---------- 9. Hero ---------- */
.hero { position: relative; padding: clamp(132px, 20vh, 190px) 0 clamp(64px, 9vw, 104px); overflow: hidden; }
.hero__glow {
  position: absolute; border-radius: 50%; filter: blur(76px); pointer-events: none; z-index: 0;
}
.hero__glow--a { width: 46vw; height: 46vw; top: -12%; right: -8%; background: radial-gradient(circle, rgba(255,211,122,.5), transparent 68%); }
.hero__glow--b { width: 38vw; height: 38vw; bottom: -16%; left: -10%; background: radial-gradient(circle, rgba(188,67,38,.2), transparent 68%); }
.hero__grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.06fr .94fr; gap: clamp(28px, 5vw, 66px); align-items: center; }
.hero h1 { margin: 6px 0 22px; }
.hero h1 .ink-gold {
  background: linear-gradient(100deg, var(--gold) 10%, var(--shu) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 30px; }
.chip {
  padding: 7px 15px; border-radius: 999px; background: var(--washi);
  box-shadow: inset 0 0 0 1px var(--line); font-size: .81rem; font-weight: 500; color: var(--ink-3);
  transition: transform .35s var(--ease-out), box-shadow .35s;
}
.chip:hover { transform: translateY(-2px); box-shadow: inset 0 0 0 1px var(--gold); }

/* photo-strip stack */
.strip { position: relative; aspect-ratio: 4 / 4.6; }
.strip__card {
  position: absolute; inset: 0; border-radius: 22px; background: var(--washi);
  box-shadow: 0 30px 70px -30px rgba(23,19,16,.42), inset 0 0 0 1px var(--line-2);
  padding: 16px; display: flex; flex-direction: column; gap: 10px;
}
.strip__card--b { transform: rotate(-6deg) translate(-7%, 4%); z-index: 0; opacity: .55; }
.strip__card--c { transform: rotate(5deg) translate(7%, 7%); z-index: 0; opacity: .35; }
.strip__card--a { z-index: 2; animation: float 7s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0) } 50% { transform: translateY(-9px) } }
.strip__tag {
  align-self: flex-start; padding: 5px 12px; border-radius: 999px;
  background: var(--ink); color: var(--gold-lt); font-size: .68rem; font-weight: 700; letter-spacing: .18em;
}
.strip__frames { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; flex: 1; }
.strip__frame { border-radius: 12px; background: var(--paper-3); position: relative; overflow: hidden; }
.strip__frame::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(140deg, #FFC96B 0%, #F0913F 55%, #D9613F 100%);
}
.strip__frame:nth-child(2)::after { background: linear-gradient(140deg, #3C3129 0%, #1E1815 60%, #4B3B2A 100%); }
.strip__frame:nth-child(3)::after { background: linear-gradient(150deg, #F7C9CE 0%, #E98FA0 60%, #C8566E 100%); }
.strip__frame:nth-child(4)::after { background: linear-gradient(200deg, #CFE0C3 0%, #94B382 55%, #5E7F55 100%); }
/* soft inner light so each frame reads like a printed photo, not a flat swatch */
.strip__frame::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: radial-gradient(120% 90% at 26% 18%, rgba(255,255,255,.42), transparent 62%);
}
.strip__frame::before { z-index: 2; }
.strip__frame::after { z-index: 1; }
.strip__foot { display: flex; align-items: baseline; justify-content: space-between; }
.strip__price { font-family: var(--serif); font-size: 1.5rem; font-weight: 700; }
.strip__price small { font-size: .62rem; font-weight: 600; letter-spacing: .16em; color: var(--sumi); }

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .strip { max-width: 380px; margin-inline: auto; }
}

/* ---------- 10. Cards / grids ---------- */
.grid { display: grid; gap: 18px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .g-4 { grid-template-columns: repeat(2, 1fr); } .g-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .g-2, .g-3, .g-4 { grid-template-columns: 1fr; } }

.card {
  position: relative; padding: 26px 24px 28px; border-radius: 20px; background: var(--washi);
  box-shadow: inset 0 0 0 1px var(--line-2), 0 1px 2px rgba(23,19,16,.03);
  transition: transform .5s var(--ease-out), box-shadow .5s var(--ease-out);
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--shu));
  transform: scaleX(0); transform-origin: left; transition: transform .55s var(--ease-out);
}
.card:hover { transform: translateY(-5px); box-shadow: inset 0 0 0 1px var(--line), 0 22px 46px -24px rgba(23,19,16,.3); }
.card:hover::before { transform: scaleX(1); }
.card__n {
  font-family: var(--serif); font-size: .78rem; font-weight: 700; letter-spacing: .2em;
  color: var(--gold); margin-bottom: 14px;
}
.card h3 { margin-bottom: 9px; }
.card p { color: var(--sumi); font-size: .925rem; }

.badge {
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: 13px;
  background: linear-gradient(140deg, var(--paper-2), var(--paper-3));
  font-family: var(--serif); font-size: 1.02rem; font-weight: 700; color: var(--shu);
  margin-bottom: 15px; box-shadow: inset 0 0 0 1px var(--line-2);
}

/* spec table */
.spec { border-top: 1px solid var(--line); }
.spec__row { display: grid; grid-template-columns: 150px 1fr; gap: 18px; padding: 17px 2px; border-bottom: 1px solid var(--line); align-items: start; }
.spec__k { font-size: .82rem; font-weight: 700; letter-spacing: .12em; color: var(--sumi); }
.spec__v { font-weight: 500; }
@media (max-width: 560px) { .spec__row { grid-template-columns: 1fr; gap: 4px; } }

/* steps */
.steps { counter-reset: s; display: grid; gap: 2px; }
.step {
  counter-increment: s; position: relative; display: grid; grid-template-columns: 60px 1fr; gap: 20px;
  padding: 24px 0; border-bottom: 1px solid var(--line);
}
.step::before {
  content: "0" counter(s); font-family: var(--serif); font-size: 1.16rem; font-weight: 700;
  color: var(--gold); letter-spacing: .04em;
}
.step h3 { margin-bottom: 5px; }
.step p { color: var(--sumi); font-size: .93rem; }
@media (max-width: 560px) { .step { grid-template-columns: 44px 1fr; gap: 12px; } }

/* pricing panel */
.price {
  border-radius: 24px; padding: clamp(26px, 4vw, 44px);
  background: linear-gradient(150deg, var(--washi), var(--paper-2));
  box-shadow: inset 0 0 0 1px var(--line);
}
.price__hero { display: flex; align-items: flex-end; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.price__num { font-family: var(--serif); font-size: clamp(3rem, 8vw, 4.6rem); font-weight: 700; line-height: .92; }
.price__cur { font-family: var(--serif); font-size: 1.3rem; font-weight: 700; color: var(--gold); }
.price__unit { font-size: .95rem; font-weight: 600; color: var(--sumi); padding-bottom: .45em; }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.qa { border-bottom: 1px solid var(--line); }
.qa__q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px;
  padding: 21px 2px; text-align: left; font-family: var(--serif); font-size: 1.045rem; font-weight: 600;
  transition: color .3s;
}
.qa__q:hover { color: var(--shu); }
.qa__i { position: relative; width: 17px; height: 17px; flex: none; }
.qa__i::before, .qa__i::after {
  content: ""; position: absolute; top: 50%; left: 0; width: 100%; height: 1.5px;
  background: var(--gold); border-radius: 2px; transition: transform .42s var(--ease-out);
}
.qa__i::after { transform: rotate(90deg); }
.qa.is-open .qa__i::after { transform: rotate(0); }
.qa__a { overflow: hidden; height: 0; transition: height .48s var(--ease-out); }
.qa__a > div { padding: 0 2px 23px; color: var(--sumi); font-size: .93rem; max-width: 76ch; }

/* contact */
.contact {
  border-radius: 26px; padding: clamp(28px, 4.4vw, 52px);
  background: var(--ink); color: var(--paper); position: relative; overflow: hidden;
}
.contact::before {
  content: ""; position: absolute; width: 420px; height: 420px; border-radius: 50%; top: -46%; right: -10%;
  background: radial-gradient(circle, rgba(255,211,122,.3), transparent 66%); filter: blur(46px);
}
.contact h2, .contact .lede { color: var(--paper); position: relative; }
.contact .lede { color: rgba(250,246,239,.76); }
.mailrow { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; position: relative; }

/* form */
.form { display: grid; gap: 14px; margin-top: 28px; position: relative; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 640px) { .form__row { grid-template-columns: 1fr; } }
.field { display: grid; gap: 7px; }
.field > span { font-size: .78rem; font-weight: 700; letter-spacing: .12em; color: rgba(250,246,239,.66); }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; border-radius: 12px; font: inherit; font-size: .93rem;
  color: var(--paper); background: rgba(250,246,239,.06);
  border: 1px solid rgba(250,246,239,.16); transition: border-color .3s, background .3s;
}
.field textarea { min-height: 104px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: rgba(250,246,239,.34); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--gold-lt); background: rgba(250,246,239,.1);
}
.field select option { color: var(--ink); }

/* ---------- 11. Footer ---------- */
.ftr { background: var(--ink); color: rgba(250,246,239,.72); padding: clamp(56px, 8vw, 86px) 0 30px; position: relative; z-index: 1; }
.ftr a { color: rgba(250,246,239,.72); transition: color .3s; }
.ftr a:hover { color: var(--gold-lt); }
.ftr__top { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; }
@media (max-width: 860px) { .ftr__top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .ftr__top { grid-template-columns: 1fr; } }
.ftr__h { font-size: .74rem; font-weight: 700; letter-spacing: .22em; text-transform: uppercase; color: var(--gold-lt); margin-bottom: 16px; }
.ftr__list { list-style: none; display: grid; gap: 10px; font-size: .9rem; }
.ftr .brand__name { color: var(--paper); }
.ftr .brand__sub { color: rgba(250,246,239,.5); }

/* studio button */
.studio {
  display: inline-flex; align-items: center; gap: 13px; margin-top: 20px;
  padding: 12px 20px 12px 14px; border-radius: 16px;
  background: rgba(250,246,239,.055); border: 1px solid rgba(250,246,239,.14);
  transition: transform .45s var(--ease-out), border-color .45s, background .45s;
}
.studio:hover { transform: translateY(-3px); border-color: var(--gold-lt); background: rgba(250,246,239,.09); }
.studio__logo { height: 26px; width: auto; flex: none; }
.studio__txt { display: flex; flex-direction: column; line-height: 1.25; }
.studio__t { font-size: .92rem; font-weight: 700; color: var(--paper); }
.studio__s { font-size: .715rem; color: rgba(250,246,239,.58); }
.studio__arrow { color: var(--gold-lt); transition: transform .45s var(--ease-out); }
.studio:hover .studio__arrow { transform: translateX(4px); }

.ftr__btm {
  margin-top: 46px; padding-top: 24px; border-top: 1px solid rgba(250,246,239,.12);
  display: flex; flex-wrap: wrap; gap: 12px 26px; align-items: center; justify-content: space-between;
  font-size: .81rem; color: rgba(250,246,239,.5);
}
.ftr__legal { display: flex; flex-wrap: wrap; gap: 8px 20px; list-style: none; }

/* ---------- 12. Legal / document pages ---------- */
.doc-hero { padding: clamp(112px, 17vh, 158px) 0 clamp(30px, 5vw, 52px); position: relative; overflow: hidden; }
.doc-hero__glow { position: absolute; width: 40vw; height: 40vw; border-radius: 50%; top: -22%; right: -6%; filter: blur(70px); background: radial-gradient(circle, rgba(255,211,122,.34), transparent 68%); }
.crumb { display: flex; gap: 9px; align-items: center; font-size: .81rem; color: var(--sumi); margin-bottom: 16px; position: relative; }
.doc { display: grid; grid-template-columns: 232px 1fr; gap: clamp(30px, 5vw, 62px); align-items: start; padding-bottom: clamp(64px, 9vw, 104px); }
@media (max-width: 900px) { .doc { grid-template-columns: 1fr; } }
.toc { position: sticky; top: 92px; }
@media (max-width: 900px) { .toc { position: static; } }
.toc__h { font-size: .72rem; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); margin-bottom: 14px; }
.toc ol { list-style: none; display: grid; gap: 2px; counter-reset: t; }
.toc a {
  display: block; padding: 8px 12px; border-radius: 10px; font-size: .875rem; color: var(--ink-3);
  border-left: 2px solid transparent; transition: background .3s, color .3s, border-color .3s;
}
.toc a:hover, .toc a.is-active { background: var(--paper-2); color: var(--ink); border-color: var(--gold); }

.tocalt { list-style: none; display: grid; gap: 2px; }
.tocalt a {
  display: block; padding: 8px 12px; border-radius: 10px; font-size: .875rem; color: var(--ink-3);
  border-left: 2px solid transparent; transition: background .3s, color .3s, border-color .3s;
}
.tocalt a:hover { background: var(--paper-2); color: var(--ink); border-color: var(--gold); }
.tocalt a[aria-current="page"] { background: var(--paper-2); color: var(--shu); border-color: var(--shu); font-weight: 600; }

.prose { max-width: 74ch; }
.prose h2 {
  font-size: clamp(1.22rem, 2.2vw, 1.5rem); margin: 46px 0 14px; padding-top: 20px;
  border-top: 1px solid var(--line); scroll-margin-top: 96px;
}
.prose h2:first-of-type { margin-top: 8px; border-top: 0; padding-top: 0; }
.prose h3 { font-size: 1.045rem; margin: 26px 0 8px; }
.prose p { margin: 0 0 13px; color: var(--ink-3); }
.prose ul, .prose ol { margin: 0 0 15px; padding-left: 1.35em; display: grid; gap: 8px; color: var(--ink-3); }
.prose li { padding-left: .2em; }
.prose li::marker { color: var(--gold); font-weight: 700; }
.prose strong { color: var(--ink); font-weight: 700; }
.prose a:not(.btn) { color: var(--shu); font-weight: 600; text-decoration: underline; text-decoration-color: rgba(188,67,38,.32); text-underline-offset: 3px; }
.prose a:not(.btn):hover { text-decoration-color: currentColor; }

.callout {
  margin: 20px 0; padding: 18px 22px; border-radius: 16px;
  background: linear-gradient(140deg, rgba(235,196,105,.16), rgba(235,196,105,.05));
  border: 1px solid rgba(192,145,47,.3); font-size: .92rem; color: var(--ink-2);
}
.callout strong { display: block; margin-bottom: 5px; color: #8A6410; letter-spacing: .04em; }
.callout--shu { background: linear-gradient(140deg, rgba(188,67,38,.1), rgba(188,67,38,.03)); border-color: rgba(188,67,38,.28); }
.callout--shu strong { color: var(--shu); }

.ptable { width: 100%; border-collapse: collapse; margin: 18px 0 22px; font-size: .91rem; }
.ptable th, .ptable td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.ptable th { font-size: .76rem; letter-spacing: .12em; text-transform: uppercase; color: var(--sumi); font-weight: 700; background: var(--paper-2); }
.ptable td:first-child { font-weight: 600; color: var(--ink); white-space: nowrap; }
.ptable tr:hover td { background: rgba(235,196,105,.07); }
@media (max-width: 620px) { .ptable, .ptable tbody, .ptable tr, .ptable td, .ptable th { display: block; } .ptable th { display: none; } .ptable td { border: 0; padding: 4px 0; } .ptable tr { padding: 14px 0; border-bottom: 1px solid var(--line); } }

.updated { font-size: .8rem; color: var(--sumi); margin-top: 8px; }

/* back to top */
.totop {
  position: fixed; right: 20px; bottom: 20px; z-index: 55; width: 46px; height: 46px; border-radius: 50%;
  display: grid; place-items: center; background: var(--ink); color: var(--gold-lt);
  box-shadow: 0 12px 30px -12px rgba(23,19,16,.55);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .4s, visibility .4s, transform .4s var(--ease-out);
}
.totop.is-on { opacity: 1; visibility: visible; transform: none; }

/* skip link */
.skip {
  position: absolute; left: -9999px; top: 8px; z-index: 300;
  padding: 10px 16px; border-radius: 10px; background: var(--ink); color: var(--paper); font-size: .9rem;
}
.skip:focus { left: 12px; }

:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 4px; }

/* ---------- 13. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .rv, .js-ready .rv { opacity: 1 !important; transform: none !important; }
  .curtain { display: none; }
}

/* ---------- 14. Print ---------- */
@media print {
  .hdr, .ftr, .totop, .curtain, .toc, .hero__glow, .doc-hero__glow { display: none !important; }
  body { background: #fff; color: #000; }
  .doc { grid-template-columns: 1fr; }
  .prose { max-width: none; }
}