/* ==========================================================================
   NUNCHUK 拿翹 — Social Lubrication
   Design system : 日式簡約 (Japanese minimal) × 手繪品牌紅
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  /* Brand */
  --red:        #CA1C26;
  --red-deep:   #9E121A;
  --red-soft:   rgba(202, 28, 38, .08);

  /* Ink & paper */
  --ink:        #1C1917;
  --ink-2:      #443E3A;
  --ink-3:      #8A827B;
  --paper:      #F6F3EE;
  --paper-2:    #EFEAE2;
  --white:      #FFFFFF;
  --line:       #E0D9CE;
  --line-soft:  rgba(28, 25, 23, .08);

  /* Type */
  --f-serif: "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  --f-sans:  "Noto Sans TC", -apple-system, "Segoe UI", "Microsoft JhengHei", sans-serif;
  --f-latin: "Oswald", "Arial Narrow", sans-serif;

  /* Rhythm */
  --gutter:  clamp(20px, 5vw, 80px);
  --maxw:    1320px;
  --sec-y:   clamp(80px, 12vw, 180px);

  /* Motion */
  --ease:     cubic-bezier(.22, 1, .36, 1);
  --ease-io:  cubic-bezier(.65, 0, .35, 1);
  --dur:      .7s;

  --header-h: 76px;
}

/* ---------- 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(--f-sans);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: .04em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; font-weight: 500; line-height: 1.35; letter-spacing: .02em; }
p  { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
::selection { background: var(--red); color: #fff; }

/* ---------- Layout helpers ---------- */
.wrap    { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.wrap-sm { max-width: 860px;  margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--sec-y); position: relative; }
.hr      { height: 1px; background: var(--line); border: 0; margin: 0; }
.center  { text-align: center; }

/* ---------- Typography ---------- */
.eyebrow {
  font-family: var(--f-latin);
  font-size: 12px;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--red);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: ""; width: 34px; height: 1px; background: var(--red); display: block;
}
.h-display {
  font-family: var(--f-latin);
  font-size: clamp(56px, 13vw, 190px);
  line-height: .88;
  letter-spacing: -.01em;
  font-weight: 600;
  text-transform: uppercase;
}
.h-display.cn {
  font-family: var(--f-serif);
  font-size: clamp(44px, 10vw, 148px);
  letter-spacing: .1em;
  line-height: 1.02;
  font-weight: 400;
}
.h1 { font-family: var(--f-serif); font-size: clamp(30px, 4.6vw, 58px); line-height: 1.28; }
.h2 { font-family: var(--f-serif); font-size: clamp(25px, 3.4vw, 42px); line-height: 1.35; }
.h3 { font-family: var(--f-serif); font-size: clamp(19px, 2vw, 25px); }
.lead { font-size: clamp(15px, 1.15vw, 17px); color: var(--ink-2); line-height: 2.15; }
.muted { color: var(--ink-3); }
.small { font-size: 13px; letter-spacing: .08em; }
.red { color: var(--red); }
.num {
  font-family: var(--f-latin); font-size: 12px; letter-spacing: .3em; color: var(--ink-3);
}

/* 縦書き — 日式直排標籤 */
.vlabel {
  writing-mode: vertical-rl;
  font-family: var(--f-serif);
  font-size: 13px;
  letter-spacing: .5em;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 18px;
}
.vlabel::after { content: ""; width: 1px; height: 60px; background: var(--line); }

/* ---------- Buttons ---------- */
.btn {
  --bg: var(--ink); --fg: #fff;
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  gap: 10px; padding: 15px 34px; border-radius: 999px;
  background: var(--bg); color: var(--fg);
  font-size: 14px; letter-spacing: .16em; font-weight: 500;
  overflow: hidden; isolation: isolate;
  transition: color .4s var(--ease), transform .4s var(--ease);
}
.btn::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--red); transform: translateY(101%);
  transition: transform .5s var(--ease);
}
.btn:hover::after { transform: translateY(0); }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-red { --bg: var(--red); }
.btn-red::after { background: var(--ink); }
.btn-ghost {
  --bg: transparent; --fg: var(--ink);
  border: 1px solid var(--ink);
}
.btn-ghost:hover { color: #fff; border-color: var(--red); }
.btn-sm { padding: 11px 24px; font-size: 13px; }
.btn-block { display: flex; width: 100%; }
.btn[disabled] { opacity: .35; pointer-events: none; }

/* 文字連結：紅色下劃線 wipe */
.link-u {
  position: relative; display: inline-block; padding-bottom: 3px;
  font-size: 14px; letter-spacing: .14em;
}
.link-u::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px;
  background: var(--red); transform: scaleX(0); transform-origin: right;
  transition: transform .5s var(--ease);
}
.link-u:hover { color: var(--red); }
.link-u:hover::after { transform: scaleX(1); transform-origin: left; }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center;
  transition: height .4s var(--ease), background .4s var(--ease), box-shadow .4s var(--ease);
}
.site-header::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: rgba(246, 243, 238, .82);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  opacity: 0; transition: opacity .4s var(--ease);
}
.site-header::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: var(--line); transform: scaleX(0); transform-origin: left;
  transition: transform .6s var(--ease);
}
.site-header.is-stuck::before { opacity: 1; }
.site-header.is-stuck::after  { transform: scaleX(1); }
.site-header.is-stuck { height: 64px; }
/* 深色版面的頁面（例如會員登入）需要固定不透明的頁首 */
body.solid-header .site-header::before { opacity: 1; }
body.solid-header .site-header::after  { transform: scaleX(1); }

.header-inner {
  width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 26px; transition: transform .5s var(--ease); }
.brand:hover img { transform: rotate(-6deg) scale(1.08); }
.brand-txt { display: flex; flex-direction: column; line-height: 1; }
.brand-txt b {
  font-family: var(--f-latin); font-size: 19px; letter-spacing: .06em; color: var(--red);
  font-weight: 600;
}
.brand-txt span {
  font-size: 9px; letter-spacing: .22em; color: var(--ink-3); margin-top: 3px;
}

.nav { display: flex; align-items: center; gap: 34px; }
.nav a {
  position: relative; font-size: 14px; letter-spacing: .1em; padding-block: 6px;
  transition: color .3s var(--ease);
}
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1px; width: 100%;
  background: var(--red); transform: scaleX(0); transform-origin: right;
  transition: transform .45s var(--ease);
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--red); }
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }

.header-tools { display: flex; align-items: center; gap: 14px; }
.icon-btn {
  position: relative; width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center; border: 1px solid var(--line);
  transition: border-color .35s var(--ease), background .35s var(--ease), color .35s var(--ease);
}
.icon-btn:hover { border-color: var(--red); color: var(--red); background: var(--red-soft); }
.icon-btn svg { width: 18px; height: 18px; }
.cart-count {
  position: absolute; top: -4px; right: -4px; min-width: 19px; height: 19px; padding: 0 5px;
  border-radius: 999px; background: var(--red); color: #fff;
  font-family: var(--f-latin); font-size: 11px; line-height: 19px; text-align: center;
  transform: scale(0); transition: transform .4s var(--ease);
}
.cart-count.on { transform: scale(1); }
.cart-count.pop { animation: pop .5s var(--ease); }
@keyframes pop { 0%{transform:scale(1)} 40%{transform:scale(1.45)} 100%{transform:scale(1)} }

/* 漢堡選單 */
.burger { display: none; width: 42px; height: 42px; place-items: center; }
.burger i {
  display: block; width: 20px; height: 1.5px; background: var(--ink); position: relative;
  transition: background .3s;
}
.burger i::before, .burger i::after {
  content: ""; position: absolute; left: 0; width: 20px; height: 1.5px; background: var(--ink);
  transition: transform .45s var(--ease);
}
.burger i::before { top: -6px; }
.burger i::after  { top:  6px; }
body.menu-open .burger i { background: transparent; }
body.menu-open .burger i::before { transform: translateY(6px) rotate(45deg); }
body.menu-open .burger i::after  { transform: translateY(-6px) rotate(-45deg); }

/* 行動版全螢幕選單 */
.mobile-menu {
  position: fixed; inset: 0; z-index: 99; background: var(--paper);
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 var(--gutter);
  clip-path: inset(0 0 100% 0);
  transition: clip-path .8s var(--ease);
  visibility: hidden;
}
body.menu-open .mobile-menu { clip-path: inset(0 0 0 0); visibility: visible; }
.mobile-menu a {
  font-family: var(--f-serif); font-size: clamp(28px, 8vw, 44px);
  padding-block: 14px; border-bottom: 1px solid var(--line);
  display: flex; align-items: baseline; gap: 16px;
  opacity: 0; transform: translateY(24px);
  transition: opacity .5s var(--ease), transform .5s var(--ease), color .3s;
}
.mobile-menu a span { font-family: var(--f-latin); font-size: 12px; color: var(--red); letter-spacing: .2em; }
.mobile-menu a:hover { color: var(--red); }
body.menu-open .mobile-menu a { opacity: 1; transform: none; }
body.menu-open .mobile-menu a:nth-child(1) { transition-delay: .22s }
body.menu-open .mobile-menu a:nth-child(2) { transition-delay: .29s }
body.menu-open .mobile-menu a:nth-child(3) { transition-delay: .36s }
body.menu-open .mobile-menu a:nth-child(4) { transition-delay: .43s }
body.menu-open .mobile-menu a:nth-child(5) { transition-delay: .50s }
body.menu-open .mobile-menu a:nth-child(6) { transition-delay: .57s }

/* ==========================================================================
   Hero (首頁)
   ========================================================================== */
.hero {
  position: relative; min-height: 100svh; display: flex; align-items: center;
  padding-top: var(--header-h); overflow: hidden;
}
#hero-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0;
}
/* 柔霧：讓豆子退到標題後方，中央留白（日式霞掛け） */
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(78% 78% at 30% 50%,
      var(--paper) 0%, rgba(246, 243, 238, .93) 26%, rgba(246, 243, 238, .70) 46%,
      rgba(246, 243, 238, .34) 64%, rgba(246, 243, 238, 0) 88%),
    linear-gradient(to bottom, rgba(246,243,238,.9) 0%, rgba(246,243,238,0) 18%);
}
.hero-inner { position: relative; z-index: 2; width: 100%; }
.hero-grid {
  display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: end;
}
.hero-title { position: relative; }
.hero-title .h-display { color: var(--red); }
.hero-title .h-display .l2 { color: var(--ink); display: block; }
.hero-sub {
  margin-top: 26px; max-width: 460px;
  font-family: var(--f-serif); font-size: clamp(15px, 1.5vw, 19px); line-height: 2.1; color: var(--ink-2);
}
.hero-actions { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero-door {
  width: clamp(120px, 15vw, 210px); opacity: .95;
  animation: float 7s ease-in-out infinite;
}
@keyframes float { 0%,100%{transform:translateY(0) rotate(0)} 50%{transform:translateY(-16px) rotate(1.2deg)} }

.scroll-cue {
  position: absolute; left: 50%; bottom: 30px; transform: translateX(-50%);
  z-index: 3; display: flex; flex-direction: column; align-items: center; gap: 10px;
  font-family: var(--f-latin); font-size: 10px; letter-spacing: .3em; color: var(--ink-3);
}
.scroll-cue i { display: block; width: 1px; height: 52px; background: var(--line); position: relative; overflow: hidden; }
.scroll-cue i::after {
  content: ""; position: absolute; inset: 0; background: var(--red);
  animation: cue 2.2s var(--ease-io) infinite;
}
@keyframes cue { 0%{transform:translateY(-100%)} 60%,100%{transform:translateY(100%)} }

/* 內頁 hero */
.page-hero {
  padding-top: calc(var(--header-h) + clamp(60px, 9vw, 120px));
  padding-bottom: clamp(40px, 6vw, 80px);
  position: relative; overflow: hidden;
}
.page-hero .h1 { margin-top: 18px; }
.page-hero-latin {
  font-family: var(--f-latin); font-size: clamp(48px, 11vw, 130px); line-height: .9;
  color: var(--line); text-transform: uppercase; letter-spacing: -.01em;
  margin-top: -.1em; pointer-events: none; user-select: none;
}

/* ==========================================================================
   Marquee 跑馬燈
   ========================================================================== */
.marquee {
  overflow: hidden; border-block: 1px solid var(--line); background: var(--white);
  padding-block: 20px;
}
.marquee-track { display: flex; width: max-content; animation: slide 34s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee span {
  font-family: var(--f-latin); font-size: clamp(20px, 3vw, 40px); letter-spacing: .06em;
  text-transform: uppercase; padding-inline: 28px; display: flex; align-items: center; gap: 28px;
  color: var(--ink);
}
.marquee span em { color: var(--red); font-style: normal; }
.marquee span::after { content: ""; width: 9px; height: 9px; background: var(--red); border-radius: 50%; }
@keyframes slide { to { transform: translateX(-50%); } }

/* ==========================================================================
   Section head
   ========================================================================== */
.sec-head {
  display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: end;
  margin-bottom: clamp(40px, 5vw, 72px);
}
.sec-head .h2 { margin-top: 16px; }

/* ==========================================================================
   Story / about blocks
   ========================================================================== */
.story {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 7vw, 110px); align-items: center;
}
.story.rev > *:first-child { order: 2; }
.story-media { position: relative; }
.story-media img { width: 100%; }
.story-media .stamp {
  position: absolute; right: 0; bottom: -4%;
  width: auto; height: clamp(86px, 10vw, 140px);
  animation: spin 22s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.kv-list { margin-top: 40px; border-top: 1px solid var(--line); }
.kv-list div {
  display: grid; grid-template-columns: 130px 1fr; gap: 20px;
  padding-block: 18px; border-bottom: 1px solid var(--line);
  transition: background .4s var(--ease), padding-left .4s var(--ease);
}
.kv-list div:hover { background: var(--white); padding-left: 14px; }
.kv-list dt { font-size: 13px; letter-spacing: .18em; color: var(--red); font-family: var(--f-latin); }
.kv-list dd { margin: 0; color: var(--ink-2); font-size: 15px; }

/* ==========================================================================
   Cards — 甜點介紹
   ========================================================================== */
.grid-cards {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1px;
}
.card {
  background: var(--paper); padding: clamp(24px, 2.4vw, 34px);
  display: flex; flex-direction: column; gap: 16px;
  position: relative; overflow: hidden; isolation: isolate;
  outline: 1px solid var(--line);          /* 用 outline 畫格線，空格子不會留下色塊 */
  transition: background .5s var(--ease);
}
.card::before {
  content: ""; position: absolute; inset: 0; z-index: -1; background: var(--white);
  transform: translateY(100%); transition: transform .6s var(--ease);
}
.card:hover::before { transform: translateY(0); }
.card-fig {
  aspect-ratio: 4/3; display: grid; place-items: center; overflow: hidden;
}
.card-fig img {
  max-height: 100%; width: auto; object-fit: contain;
  transition: transform .8s var(--ease), filter .6s var(--ease);
}
.card:hover .card-fig img { transform: scale(1.08) rotate(-2deg); }
.card-top {
  display: flex; justify-content: space-between; align-items: baseline; gap: 10px 14px; flex-wrap: wrap;
}
.card-top > div { min-width: 0; }
.card-top .num { display: block; margin-top: 2px; }
/* 數字區塊：不畫格線的卡片 */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 34px 24px; }
.facts .fig {
  font-family: var(--f-latin); font-size: clamp(46px, 6.6vw, 82px); line-height: 1; color: var(--red);
}
.facts .fig small {
  font-size: .26em; letter-spacing: .2em; color: var(--ink-3); margin-left: 8px; font-family: var(--f-latin);
}
.facts p { margin-top: 10px; font-size: 14.5px; color: var(--ink-2); }
.card h3 { font-family: var(--f-serif); }
.card .price { font-family: var(--f-latin); font-size: 17px; color: var(--red); white-space: nowrap; }
.card p { font-size: 14px; color: var(--ink-3); line-height: 1.95; }
.card .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 6px; }
.tag {
  font-size: 11px; letter-spacing: .12em; padding: 4px 11px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--ink-3);
}
.card:hover .tag { border-color: var(--red); color: var(--red); }

/* ==========================================================================
   訂購頁
   ========================================================================== */
.order-layout {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(36px, 5vw, 76px); align-items: start;
}
.viewer-3d {
  position: sticky; top: calc(var(--header-h) + 20px);
  aspect-ratio: 1/1; background: var(--white); border: 1px solid var(--line);
  position: relative; overflow: hidden; border-radius: 2px;
}
.viewer-3d canvas { display: block; width: 100%; height: 100%; cursor: grab; }
.viewer-3d canvas:active { cursor: grabbing; }
.viewer-hint {
  position: absolute; left: 18px; bottom: 16px; z-index: 2;
  font-size: 11px; letter-spacing: .16em; color: var(--ink-3);
  display: flex; align-items: center; gap: 8px; pointer-events: none;
}
.viewer-hint::before {
  content: ""; width: 22px; height: 1px; background: var(--red);
  animation: hintline 2.4s var(--ease-io) infinite;
}
@keyframes hintline { 0%,100%{transform:translateX(0)} 50%{transform:translateX(10px)} }
.viewer-swatches {
  position: absolute; right: 16px; top: 16px; z-index: 2; display: flex; flex-direction: column; gap: 9px;
}
.swatch {
  width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--line);
  transition: transform .35s var(--ease), border-color .35s;
}
.swatch:hover { transform: scale(1.15); }
.swatch.on { border-color: var(--red); box-shadow: 0 0 0 3px var(--red-soft); }

.opt-group { margin-bottom: 32px; }
.opt-group > h4 {
  font-size: 12px; letter-spacing: .22em; color: var(--ink-3); margin-bottom: 14px;
  font-family: var(--f-latin); text-transform: uppercase;
}
.opt-row { display: flex; flex-wrap: wrap; gap: 10px; }
.opt {
  position: relative; padding: 12px 20px; border: 1px solid var(--line); border-radius: 999px;
  background: transparent; font-size: 14px; letter-spacing: .06em;
  transition: all .35s var(--ease);
}
.opt:hover { border-color: var(--ink); }
.opt.on { border-color: var(--red); color: var(--red); background: var(--red-soft); }
.opt .p { font-family: var(--f-latin); font-size: 12px; color: var(--ink-3); margin-left: 8px; }
.opt.on .p { color: var(--red); }

.flavour-list { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.flavour {
  background: var(--paper); padding: 18px 22px; display: grid;
  grid-template-columns: 54px 1fr auto; gap: 18px; align-items: center; text-align: left;
  transition: background .4s var(--ease);
}
.flavour:hover { background: var(--white); }
.flavour.on { background: var(--white); box-shadow: inset 3px 0 0 var(--red); }
.flavour img { width: 54px; }
.flavour b { display: block; font-family: var(--f-serif); font-size: 17px; font-weight: 500; }
.flavour small { color: var(--ink-3); font-size: 12.5px; letter-spacing: .04em; }
.flavour .price { font-family: var(--f-latin); font-size: 16px; color: var(--red); }

.qty { display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 999px; }
.qty button {
  width: 42px; height: 42px; display: grid; place-items: center; font-size: 18px; color: var(--ink-3);
  transition: color .3s;
}
.qty button:hover { color: var(--red); }
.qty input {
  width: 46px; text-align: center; border: 0; background: none; font-family: var(--f-latin); font-size: 16px;
  -moz-appearance: textfield;
}
.qty input::-webkit-outer-spin-button, .qty input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.total-bar {
  margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.total-bar .amount { font-family: var(--f-latin); font-size: clamp(30px, 4vw, 46px); color: var(--red); line-height: 1; }
.total-bar .amount small { font-size: 14px; color: var(--ink-3); margin-right: 6px; }

/* ==========================================================================
   購物車 / 結帳
   ========================================================================== */
.steps { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: clamp(36px, 5vw, 60px); }
.step { display: flex; align-items: center; gap: 10px; font-size: 13.5px; letter-spacing: .1em; color: var(--ink-3); }
.step i {
  width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--line);
  display: grid; place-items: center; font-family: var(--f-latin); font-size: 12px; font-style: normal;
  transition: all .4s var(--ease);
}
.step.on { color: var(--ink); }
.step.on i { background: var(--red); border-color: var(--red); color: #fff; }
.step.done i { border-color: var(--red); color: var(--red); }
.step-sep { width: 34px; height: 1px; background: var(--line); }

.cart-table { border-top: 1px solid var(--line); }
.cart-row {
  display: grid; grid-template-columns: 84px 1fr auto auto 40px; gap: 22px; align-items: center;
  padding-block: 22px; border-bottom: 1px solid var(--line);
  animation: rowin .5s var(--ease) both;
}
@keyframes rowin { from { opacity: 0; transform: translateY(14px); } }
.cart-row.removing { animation: rowout .4s var(--ease) forwards; }
@keyframes rowout { to { opacity: 0; transform: translateX(30px); height: 0; padding-block: 0; } }
.cart-row .thumb {
  width: 84px; aspect-ratio: 1; background: var(--white); border: 1px solid var(--line);
  display: grid; place-items: center; padding: 8px;
}
.cart-row .thumb img { max-height: 100%; width: auto; }
.cart-row .name b { font-family: var(--f-serif); font-size: 17px; font-weight: 500; display: block; }
.cart-row .name small { color: var(--ink-3); font-size: 12.5px; }
.cart-row .sub { font-family: var(--f-latin); font-size: 17px; min-width: 90px; text-align: right; }
.cart-row .del {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; color: var(--ink-3);
  transition: all .3s;
}
.cart-row .del:hover { background: var(--red-soft); color: var(--red); }

.summary {
  background: var(--white); border: 1px solid var(--line); padding: clamp(26px, 3vw, 38px);
  position: sticky; top: calc(var(--header-h) + 20px);
}
.summary .line { display: flex; justify-content: space-between; gap: 16px; padding-block: 11px; font-size: 14.5px; }
.summary .line.total {
  border-top: 1px solid var(--line); margin-top: 12px; padding-top: 20px;
  font-family: var(--f-latin); font-size: 26px; color: var(--red); align-items: baseline;
}
.summary .line.total span:first-child { font-family: var(--f-sans); font-size: 14px; color: var(--ink); }

.order-layout.is-empty { grid-template-columns: 1fr; }
.empty {
  text-align: center; padding-block: clamp(60px, 10vw, 120px);
}
.empty img { width: 150px; margin: 0 auto 26px; opacity: .3; }

/* ==========================================================================
   表單
   ========================================================================== */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px 26px; }
.field { position: relative; display: flex; flex-direction: column; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 12px; letter-spacing: .18em; color: var(--ink-3); margin-bottom: 9px; }
.field label .req { color: var(--red); }
.field input, .field select, .field textarea {
  width: 100%; padding: 14px 4px; border: 0; border-bottom: 1px solid var(--line);
  background: transparent; font-size: 15.5px; letter-spacing: .04em; border-radius: 0;
  transition: border-color .4s var(--ease);
}
.field textarea { resize: vertical; min-height: 96px; }
.field select { appearance: none; cursor: pointer; background-image: none; }
.field .sel-wrap { position: relative; }
.field .sel-wrap::after {
  content: ""; position: absolute; right: 6px; top: 50%; width: 7px; height: 7px;
  border-right: 1px solid var(--ink-3); border-bottom: 1px solid var(--ink-3);
  transform: translateY(-70%) rotate(45deg); pointer-events: none;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 0; border-color: var(--red); }
.field .err { color: var(--red); font-size: 12px; margin-top: 7px; min-height: 17px; letter-spacing: .06em; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--red); }

.check { display: flex; align-items: flex-start; gap: 12px; cursor: pointer; font-size: 14px; color: var(--ink-2); }
.check input { position: absolute; opacity: 0; pointer-events: none; }
.check i {
  flex: none; width: 19px; height: 19px; border: 1px solid var(--line); margin-top: 4px;
  display: grid; place-items: center; transition: all .3s var(--ease);
}
.check i::after {
  content: ""; width: 9px; height: 5px; border-left: 1.5px solid #fff; border-bottom: 1.5px solid #fff;
  transform: rotate(-45deg) scale(0); transition: transform .3s var(--ease);
}
.check input:checked + i { background: var(--red); border-color: var(--red); }
.check input:checked + i::after { transform: rotate(-45deg) scale(1); }

/* 付款 / 取貨方式 */
.choice-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.choice {
  border: 1px solid var(--line); padding: 18px 20px; text-align: left; border-radius: 2px;
  transition: all .4s var(--ease); background: transparent;
}
.choice:hover { border-color: var(--ink-3); }
.choice.on { border-color: var(--red); background: var(--red-soft); }
.choice b { display: block; font-size: 15px; font-weight: 500; }
.choice small { color: var(--ink-3); font-size: 12.5px; }

/* ==========================================================================
   會員登入
   ========================================================================== */
.auth-wrap {
  min-height: 100svh; display: grid; grid-template-columns: 1.05fr 1fr;
}
.auth-visual {
  position: relative; background: var(--ink); overflow: hidden;
  display: grid; place-items: center; padding: var(--gutter);
}
.auth-visual canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.auth-visual::after {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(56% 50% at 50% 56%,
    rgba(28, 25, 23, .90) 0%, rgba(28, 25, 23, .58) 52%, rgba(28, 25, 23, 0) 84%);
}
.auth-visual-in { position: relative; z-index: 2; text-align: center; color: #fff; max-width: 420px; }
.auth-visual-in img { width: 120px; margin: 0 auto 30px; filter: brightness(0) invert(1); opacity: .9; }
.auth-visual-in .h2 { color: #fff; }
.auth-visual-in p { color: rgba(255,255,255,.6); margin-top: 18px; font-size: 14.5px; line-height: 2; }

.auth-panel {
  display: flex; flex-direction: column; justify-content: center;
  padding: calc(var(--header-h) + 40px) clamp(24px, 5vw, 76px) 60px;
}
.auth-tabs { display: flex; gap: 28px; border-bottom: 1px solid var(--line); margin-bottom: 38px; }
.auth-tab {
  position: relative; padding-bottom: 15px; font-family: var(--f-serif); font-size: 20px;
  color: var(--ink-3); transition: color .35s;
}
.auth-tab::after {
  content: ""; position: absolute; left: 0; bottom: -1px; width: 100%; height: 2px; background: var(--red);
  transform: scaleX(0); transform-origin: left; transition: transform .5s var(--ease);
}
.auth-tab.on { color: var(--ink); }
.auth-tab.on::after { transform: scaleX(1); }
.auth-form { display: none; }
.auth-form.on { display: block; animation: fadeup .55s var(--ease) both; }
@keyframes fadeup { from { opacity: 0; transform: translateY(16px); } }
.auth-form .field { margin-bottom: 20px; }
.auth-alt { margin-top: 26px; font-size: 13.5px; color: var(--ink-3); }

.member-card {
  background: var(--ink); color: #fff; padding: clamp(30px, 4vw, 48px); border-radius: 3px;
  position: relative; overflow: hidden;
}
.member-card::after {
  content: ""; position: absolute; right: -40px; bottom: -60px; width: 220px; height: 220px;
  border: 1px solid rgba(255,255,255,.12); border-radius: 50%;
}
.member-card .lv {
  font-family: var(--f-latin); font-size: 11px; letter-spacing: .3em; color: var(--red);
}
.member-card .nm { font-family: var(--f-serif); font-size: clamp(24px, 3vw, 34px); margin-top: 10px; }
.member-card .no { font-family: var(--f-latin); letter-spacing: .3em; color: rgba(255,255,255,.5); margin-top: 6px; font-size: 13px; }
.member-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: rgba(255,255,255,.15); margin-top: 34px; }
.member-stats div { background: var(--ink); padding: 18px 6px; text-align: center; }
.member-stats b { display: block; font-family: var(--f-latin); font-size: 26px; color: #fff; }
.member-stats small { color: rgba(255,255,255,.5); font-size: 11.5px; letter-spacing: .12em; }

/* ==========================================================================
   3D 視差區塊
   ========================================================================== */
.parallax-3d {
  position: relative; height: clamp(420px, 62vh, 680px); overflow: hidden;
  background: var(--paper-2);
}
.parallax-3d canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.parallax-3d .caption {
  position: relative; z-index: 2; height: 100%; display: grid; place-items: center;
  text-align: center; pointer-events: none; padding-inline: var(--gutter);
}
/* 讓標題區從插畫中浮出來 */
.parallax-3d .caption::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(44% 42% at 50% 50%,
    rgba(239, 234, 226, .95) 0%, rgba(239, 234, 226, .72) 48%, rgba(239, 234, 226, 0) 78%);
}
.parallax-3d .caption .h2 { max-width: 700px; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--ink); color: rgba(255,255,255,.72); padding-top: clamp(60px, 8vw, 100px); }
.site-footer a { transition: color .3s; }
.site-footer a:hover { color: var(--red); }
.footer-top {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px;
  padding-bottom: clamp(48px, 6vw, 76px);
}
.footer-brand img { width: 46px; margin-bottom: 20px; }
.footer-brand p { font-size: 13.5px; line-height: 2; color: rgba(255,255,255,.5); max-width: 300px; }
.footer-col h5 {
  margin: 0 0 20px; font-family: var(--f-latin); font-size: 11px; letter-spacing: .26em;
  color: var(--red); text-transform: uppercase; font-weight: 500;
}
.footer-col li { margin-bottom: 12px; font-size: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12); padding-block: 24px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 12px; letter-spacing: .1em; color: rgba(255,255,255,.4);
}
.footer-word { padding-bottom: 10px; }
.footer-word img { width: 100%; filter: brightness(0) invert(1); opacity: .07; }

/* ==========================================================================
   動態 — reveal
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .1s }
.reveal[data-d="2"] { transition-delay: .2s }
.reveal[data-d="3"] { transition-delay: .3s }
.reveal[data-d="4"] { transition-delay: .4s }
.reveal[data-d="5"] { transition-delay: .5s }

.mask { overflow: hidden; display: block; padding-bottom: .06em; }
.mask > * { display: block; transform: translateY(105%); transition: transform 1s var(--ease); }
.mask.in > * { transform: none; }

.line-draw { transform: scaleX(0); transform-origin: left; transition: transform 1.1s var(--ease); }
.line-draw.in { transform: scaleX(1); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal, .mask > * { opacity: 1 !important; transform: none !important; }
}

/* ---------- details 訂單摺疊 ---------- */
summary { list-style: none; }
summary::-webkit-details-marker { display: none; }
details summary { transition: opacity .3s; }
details summary:hover { opacity: .62; }
details[open] summary { margin-bottom: 2px; }

/* ---------- Toast ---------- */
.toast-host {
  position: fixed; right: 20px; bottom: 20px; z-index: 200;
  display: flex; flex-direction: column; gap: 10px; pointer-events: none;
}
.toast {
  background: var(--ink); color: #fff; padding: 14px 22px; border-radius: 999px;
  font-size: 13.5px; letter-spacing: .08em; display: flex; align-items: center; gap: 10px;
  box-shadow: 0 12px 34px rgba(0,0,0,.18);
  animation: toastin .5s var(--ease) both;
}
.toast.out { animation: toastout .4s var(--ease) forwards; }
.toast b { color: var(--red); font-weight: 500; }
@keyframes toastin  { from { opacity: 0; transform: translateY(20px) scale(.94); } }
@keyframes toastout { to   { opacity: 0; transform: translateY(10px) scale(.96); } }

/* ---------- 頁面載入遮罩 ---------- */
.loader {
  position: fixed; inset: 0; z-index: 300; background: var(--paper);
  display: grid; place-items: center;
  transition: clip-path 1s var(--ease) .15s, visibility 0s 1.15s;
}
body.loaded .loader { clip-path: inset(0 0 100% 0); visibility: hidden; }
.loader img { width: 62px; animation: loaderpulse 1.4s var(--ease-io) infinite; }
@keyframes loaderpulse { 0%,100%{opacity:.25; transform:translateY(0)} 50%{opacity:1; transform:translateY(-8px)} }

/* ---------- 進度條 ---------- */
.progress {
  position: fixed; top: 0; left: 0; height: 2px; background: var(--red); z-index: 101;
  width: 0; transition: width .1s linear;
}

/* ==========================================================================
   RWD
   ========================================================================== */
@media (max-width: 1080px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .auth-wrap { grid-template-columns: 1fr; }
  .auth-visual {
    min-height: 380px;
    padding: calc(var(--header-h) + 36px) var(--gutter) 46px;   /* 避開固定頁首 */
  }
  .auth-panel { padding-top: 46px; }
  .order-layout { grid-template-columns: 1fr; }
  .viewer-3d { position: relative; top: 0; }
}
@media (max-width: 900px) {
  .nav { display: none; }
  .burger { display: grid; }
  .story { grid-template-columns: 1fr; }
  .story.rev > *:first-child { order: 0; }
  .hero-grid { grid-template-columns: 1fr; align-items: start; }
  .hero-door { display: none; }
  .sec-head { grid-template-columns: 1fr; align-items: start; }
  .summary { position: relative; top: 0; }
}
@media (max-width: 640px) {
  body { font-size: 15px; }
  /* 頁首在窄螢幕收緊：會員入口已在漢堡選單中，這裡收起來 */
  .header-tools a.icon-btn:nth-of-type(2) { display: none; }
  .header-tools { gap: 8px; }
  .icon-btn { width: 38px; height: 38px; }
  .brand img { width: 22px; }
  .brand-txt b { font-size: 17px; }
  .brand-txt span { font-size: 8px; letter-spacing: .16em; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 34px; }
  .cart-row { grid-template-columns: 64px 1fr 40px; gap: 14px; row-gap: 12px; }
  .cart-row .thumb { width: 64px; }
  .cart-row .qty { grid-column: 2; }
  .cart-row .sub { grid-column: 3 / -1; text-align: right; }
  .cart-row .del { grid-row: 1; grid-column: 3; }
  .member-stats { grid-template-columns: 1fr; }
  .toast-host { right: 12px; left: 12px; bottom: 12px; }
  .toast { justify-content: center; }
}