/* Nuno Lab：編輯／藝廊版型。手機為基底，768 起進入 12 欄錯位版面，1024 起為完整導覽。 */
@font-face { font-family: 'Taipei Sans TC'; font-weight: 300; font-style: normal; font-display: swap; src: url('/assets/fonts/taipei-sans-tc-light.woff2') format('woff2'); }
@font-face { font-family: 'Taipei Sans TC'; font-weight: 400; font-style: normal; font-display: swap; src: url('/assets/fonts/taipei-sans-tc-regular.woff2') format('woff2'); }
@font-face { font-family: 'Taipei Sans TC'; font-weight: 700; font-style: normal; font-display: swap; src: url('/assets/fonts/taipei-sans-tc-bold.woff2') format('woff2'); }

:root {
  --paper: #ffffff;
  --tone: #f4f6fb;
  --stone: #e6ebf4;
  --ink: #14171c;
  --ink-soft: #5c6577;
  --hair: #d6dce8;
  --blue: #004bad;
  --blue-soft: #e8effa;
  --font: 'Taipei Sans TC', 'PingFang TC', 'Noto Sans TC', 'Microsoft JhengHei', sans-serif;
  --edge: 1.5rem;
}

button, input, textarea, select { font-family: inherit; }
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 4.5rem; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 300 0.9375rem/1.95 var(--font);
  letter-spacing: 0.03em;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-underline-offset: 0.3em; text-decoration-thickness: 1px; }
a:hover { color: var(--blue); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

h1, h2, h3, h4 { font-family: var(--font); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.125rem); line-height: 1.6; letter-spacing: 0.08em; color: var(--blue); }
h3 { font-size: 1.125rem; line-height: 1.7; letter-spacing: 0.08em; }
.small { font-size: 0.8125rem; line-height: 1.9; color: var(--ink-soft); }

.skip-link { position: absolute; left: 1rem; top: -4rem; z-index: 40; padding: 0.5rem 1rem; background: var(--blue); color: var(--paper); }
.skip-link:focus { top: 1rem; color: var(--paper); }

/* 字標與導覽 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4rem;
  padding-inline: var(--edge);
  background: var(--paper);
  border-bottom: 1px solid var(--hair);
  transition: transform 0.35s cubic-bezier(0.3, 0.7, 0.2, 1), background-color 0.25s, border-color 0.25s;
}
/* 向下捲動滑出畫面；展開時須維持 transform: none，否則手機選單會以 header 為定位基準 */
.site-header.is-hidden { transform: translateY(-100%); }
.brand {
  position: relative;
  z-index: 2;
  display: block;
  text-decoration: none;
  line-height: 0;
}
.brand img { height: 2.25rem; width: auto; }
.nav-toggle {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 0.4375rem;
  width: 3rem;
  height: 3rem;
  margin-right: -0.5rem;
  padding: 0 0.5rem;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}
/* 長中短三條線，靠右對齊；展開時轉為叉 */
.nav-toggle i {
  display: block;
  height: 1px;
  background: currentColor;
  transition: transform 0.3s cubic-bezier(0.3, 0.7, 0.2, 1), width 0.3s, opacity 0.2s;
}
.nav-toggle i:nth-child(1) { width: 1.75rem; }
.nav-toggle i:nth-child(2) { width: 1.125rem; }
.nav-toggle i:nth-child(3) { width: 0.625rem; }
.nav-toggle[aria-expanded="true"] i:nth-child(1) { width: 1.5rem; transform: translateY(0.5rem) rotate(45deg); }
.nav-toggle[aria-expanded="true"] i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] i:nth-child(3) { width: 1.5rem; transform: translateY(-0.5rem) rotate(-45deg); }
/* 右側抽屜：以 transform 滑入滑出，關閉時 visibility 延後隱藏，避免被 Tab 聚焦 */
.site-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  width: min(24rem, 86vw);
  padding: 7rem var(--edge) 3rem;
  background: var(--paper);
  border-left: 1px solid var(--hair);
  overflow-y: auto;
  visibility: hidden;
  transform: translateX(100%);
  transition: transform 0.45s cubic-bezier(0.22, 0.8, 0.2, 1), visibility 0s linear 0.45s;
}
.site-nav.is-open { visibility: visible; transform: none; transition-delay: 0s; }
/* 抽屜外的遮罩 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 15;
  background: rgb(0 40 100 / 0.32);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.45s;
}
body.menu-open::before { opacity: 1; pointer-events: auto; }
/* 展開時導覽列透明，讓遮罩連頂部一起壓暗；字標淡出，避免被抽屜邊緣切到 */
.site-header, .brand { transition-property: transform, background-color, border-color, opacity; }
body.menu-open .site-header { background: transparent; border-color: transparent; }
body.menu-open .brand { opacity: 0; pointer-events: none; }
.site-nav li { border-top: 1px solid var(--hair); }
.nav-right li:last-child { border-bottom: 1px solid var(--hair); }
.site-nav a {
  display: block;
  padding-block: 1.125rem;
  text-decoration: none;
  font: 700 1.375rem/1.4 var(--font);
  letter-spacing: 0.14em;
}
/* 手機與平板只顯示中文 */
.site-nav a > span { display: none; }
.site-nav small { font: inherit; letter-spacing: inherit; }

/* 版面基礎 */
.grid { padding-inline: var(--edge); }
.section { padding-block: 5rem; }
.section--tone { background: var(--tone); }
.section--rule { padding-block: 4rem; }
.section--rule .grid { position: relative; }
.eyebrow { font-size: 0.75rem; letter-spacing: 0.2em; color: var(--blue); }
.kicker { font-size: 0.6875rem; letter-spacing: 0.34em; color: var(--blue); margin-bottom: 1.25rem; }

/* 手機：直排小標改為橫排加短線 */
.vlabel {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 2rem;
  font: 400 0.8125rem/1 var(--font);
  letter-spacing: 0.3em;
  color: var(--blue);
}
.vlabel::after { content: ''; width: 2.5rem; height: 1px; background: var(--blue); }

/* 按鈕 */
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1.75rem; margin-top: 1.75rem; }
.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.5rem 1.75rem;
  border: 1px solid var(--blue);
  background: none;
  color: var(--blue);
  font: 400 0.8125rem/1.4 var(--font);
  letter-spacing: 0.2em;
  text-decoration: none;
}
.cta:hover { background: var(--blue); color: var(--paper); }
.cta--solid { background: var(--blue); color: var(--paper); }
.cta--solid:hover { background: #003a88; border-color: #003a88; color: var(--paper); }
.cta[disabled] { border-color: var(--hair); color: var(--ink-soft); cursor: not-allowed; background: none; }
.cta-link {
  display: inline-flex;
  align-items: center;
  min-height: 3rem;
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-decoration: underline;
  color: var(--blue);
}

/* 圖位 */
.slot-frame {
  position: relative;
  aspect-ratio: 4 / 5;
  background: var(--stone);
}
/* 四角裁切線 */
.slot-frame::before {
  content: '';
  position: absolute;
  inset: -0.625rem;
  z-index: 3;
  pointer-events: none;
  --m: var(--blue);
  background:
    linear-gradient(var(--m), var(--m)) 0 0.625rem / 0.4375rem 1px,
    linear-gradient(var(--m), var(--m)) 0.625rem 0 / 1px 0.4375rem,
    linear-gradient(var(--m), var(--m)) 100% 0.625rem / 0.4375rem 1px,
    linear-gradient(var(--m), var(--m)) calc(100% - 0.625rem) 0 / 1px 0.4375rem,
    linear-gradient(var(--m), var(--m)) 0 calc(100% - 0.625rem) / 0.4375rem 1px,
    linear-gradient(var(--m), var(--m)) 0.625rem 100% / 1px 0.4375rem,
    linear-gradient(var(--m), var(--m)) 100% calc(100% - 0.625rem) / 0.4375rem 1px,
    linear-gradient(var(--m), var(--m)) calc(100% - 0.625rem) 100% / 1px 0.4375rem;
  background-repeat: no-repeat;
}
.slot-frame img { position: absolute; inset: 0; z-index: 2; width: 100%; height: 100%; object-fit: cover; }
figcaption { font-size: 0.6875rem; line-height: 1.6; letter-spacing: 0.1em; color: var(--ink-soft); }
.slot figcaption { margin-top: 1.125rem; }
.fig { font: 400 0.75rem/1 var(--font); letter-spacing: 0.2em; margin-right: 0.875rem; color: var(--blue); }

/* 首屏 */
.hero-slot {
  position: relative;
  height: 74vw;
  min-height: 21rem;
  max-height: 34rem;
  background: var(--stone);
  overflow: hidden;
}
.hero-slot img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-slot figcaption { position: absolute; left: 0; top: 0; padding: 0.375rem 0.875rem 0.375rem var(--edge); background: var(--paper); }
.hero-text { position: relative; margin: -3.5rem 0 0 8%; padding: 1.75rem 1.5rem 2.25rem; background: var(--paper); border-radius: 0.25rem; box-shadow: 0 0.25rem 0.75rem rgb(0 40 100 / 0.08), 0 1.5rem 3rem rgb(0 40 100 / 0.18); }
.hero h1 { margin: 1rem 0 1.25rem; font-size: 1.4375rem; line-height: 1.75; letter-spacing: 0.06em; }
.hero h1 span { display: inline-block; }
.hero-lead { margin-bottom: 0.875rem; }
.hero { padding-bottom: 3.5rem; }

/* 狀況 */

/* 工作室：三張重點卡片 */
.features { display: grid; gap: 1.25rem; margin-top: 4rem; }
.feature { padding: 1.75rem 1.5rem 1.5rem; background: var(--paper); border-radius: 0.25rem; box-shadow: 0 0.25rem 0.75rem rgb(0 40 100 / 0.06), 0 1rem 2rem rgb(0 40 100 / 0.1); }
.feature-tag { font: 700 0.75rem/1.6 var(--font); letter-spacing: 0.16em; color: var(--blue); }
.feature h3 { margin-top: 0.5rem; font-size: 1.25rem; }
.feature > p:not(.feature-tag) { margin-top: 0.75rem; font-size: 0.875rem; color: var(--ink-soft); }
.checks { margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--hair); }
.checks li { position: relative; padding: 0.25rem 0 0.25rem 1.5rem; font-size: 0.875rem; line-height: 1.8; }
.checks li::before { content: ''; position: absolute; left: 0.125rem; top: 0.6rem; width: 0.375rem; height: 0.625rem; border: solid var(--blue); border-width: 0 2px 2px 0; transform: rotate(45deg); }

/* 工作室 */
.studio-text h2 { margin-bottom: 1.75rem; }
.studio-text p + p { margin-top: 1.25rem; }
.slot--before { margin: 3.5rem 18% 0 calc(var(--edge) * -1); }
.slot--before .slot-frame { aspect-ratio: 5 / 4; }
.slot--before figcaption { padding-left: var(--edge); }
.slot--after { width: 52%; margin: 2.25rem 0 0 auto; }
.studio-note { margin-top: 1.5rem; }

/* 刊例 */
.section--plans { padding-block: 4rem 5rem; }
.plans-intro h2 { font-size: 1.75rem; }
.plans-lead { margin-top: 1rem; }
.plans { margin-top: 3rem; padding-inline: var(--edge); }
.plan { padding-block: 1.25rem 2.75rem; }
.slot--plan { margin-bottom: 2rem; }
.slot--plan { width: 100%; }
.slot--plan .slot-frame { aspect-ratio: 4 / 3; }
.plan-no { font-size: 0.75rem; letter-spacing: 0.24em; color: var(--blue); }
.plan-no span { font-family: var(--font); font-size: 0.9375rem; color: var(--blue); }
.plan h3 { margin-top: 0.25rem; font-size: 1.3125rem; }
.plan-cost { margin-top: 1rem; }
.plan-price { color: var(--blue); font: 700 2.75rem/1.1 var(--font); font-variant-numeric: lining-nums; letter-spacing: 0.01em; }
.plan-price small { margin-left: 0.625rem; font: 300 0.8125rem var(--font); letter-spacing: 0.12em; color: var(--ink-soft); }
.plan-for { margin-top: 1.25rem; font-size: 0.9375rem; line-height: 1.9; }
.plan .checks { margin-top: 1.25rem; }
.plan-range { font-size: 0.75rem; letter-spacing: 0.08em; color: var(--ink-soft); }
.plans-scope { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.25rem 1rem; margin: 2.5rem var(--edge) 0; padding: 1rem 1.25rem; background: var(--tone); border-radius: 0.25rem; font-size: 0.9375rem; }
.plans-scope span { font-size: 0.8125rem; color: var(--ink-soft); }
.plans-scope em { flex-basis: 100%; margin-top: 0.25rem; padding-top: 0.75rem; border-top: 1px solid var(--hair); font-style: normal; font-size: 0.9375rem; color: var(--blue); }
.plans-foot { padding-top: 1.75rem; }
.plans-intro h2 { display: flex; align-items: center; gap: 1.5rem; }
.plans-intro h2::after { content: ''; flex: 1; height: 1px; background: var(--blue); }
.plans-foot .actions { margin: 0 0 1.25rem; }
.plans-foot { border-top: 0; }

/* 流程 */
.process-title { margin-bottom: 2.5rem; }
.steps { counter-reset: s; }
.steps li {
  counter-increment: s;
  display: grid;
  grid-template-columns: 2.75rem 2rem 1fr;
  column-gap: 0;
  padding-block: 1.25rem;
}
.steps li::before { content: counter(s, decimal-leading-zero); grid-column: 1; grid-row: 1 / span 2; font: 400 1.0625rem/1.9 var(--font); font-variant-numeric: lining-nums; color: var(--blue); }
/* 時間軸：藍點加細線 */
.steps li::after {
  content: '';
  grid-column: 2;
  grid-row: 1 / span 2;
  margin-block: -1.25rem;
  background:
    radial-gradient(circle 0.4rem at 50% 1.875rem, var(--blue) 97%, transparent) ,
    linear-gradient(var(--blue), var(--blue)) 50% 0 / 1px 100% no-repeat;
  opacity: 1;
}
.steps li:first-child::after { background-position: 0 0, 50% 1.875rem; background-size: auto, 1px calc(100% - 1.875rem); }
.steps li:last-child::after { background-size: auto, 1px 1.875rem; }
.steps li > * { grid-column: 3; }
.steps p { font-size: 0.875rem; color: var(--ink-soft); }

/* 界線 */
.section--boundaries { padding-top: 0; }
.slot--wide { margin-right: 12%; }
.slot--wide .slot-frame { aspect-ratio: 16 / 9; }
.slot--wide figcaption { padding-left: var(--edge); }
.section--boundaries h2 { margin-top: 3.5rem; }
.promise { margin-top: 2.25rem; }
.promise p { font-size: 0.9375rem; }
.caveats { margin-top: 2.75rem; padding: 1.5rem 1.5rem 1.25rem; background: var(--tone); border: 1px solid var(--hair); border-radius: 0.25rem; }
.promise h3, .caveats h3 { margin-bottom: 0.75rem; }
.caveats ul { margin-top: 0.25rem; }
.caveats li { position: relative; padding: 0.375rem 0 0.375rem 1.25rem; font-size: 0.9375rem; line-height: 1.85; }
.caveats li::before { content: ''; position: absolute; left: 0.125rem; top: 1.0625rem; width: 0.375rem; height: 0.375rem; border-radius: 50%; background: var(--blue); }
.promise h3, .caveats h3 { color: var(--blue); }

/* 條款與問答 */
.section--rule { border-top: 1px solid var(--hair); margin-inline: var(--edge); }
.section--rule .grid { padding-inline: 0; }
.terms-side h2 { margin-bottom: 0.75rem; }
.terms-side .small { margin-top: 0.25rem; }
.clauses { counter-reset: c; margin-top: 2.25rem; font-size: 0.9375rem; line-height: 2; }
.clauses li { counter-increment: c; position: relative; padding: 0 0 1.25rem 2.5rem; break-inside: avoid; }
.clauses li::before { content: counter(c); position: absolute; left: 0; top: -0.1rem; font: 400 1.25rem/1.6 var(--font); font-variant-numeric: lining-nums; color: var(--blue); }
strong { font-weight: 700; color: var(--blue); }
.faq-title { margin-bottom: 2rem; }
.faq { display: grid; gap: 0.75rem; }
.faq-item { background: var(--paper); border: 1px solid var(--hair); border-radius: 0.25rem; transition: box-shadow 0.25s, border-color 0.25s; }
.faq-item[open] { border-color: var(--blue); box-shadow: 0 0.25rem 0.75rem rgb(0 40 100 / 0.06), 0 1rem 2rem rgb(0 40 100 / 0.1); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.5rem;
  padding: 0.75rem 1.25rem;
  font: 700 1.0625rem/1.7 var(--font);
  letter-spacing: 0.06em;
  color: var(--blue);
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
/* 加號，展開時變成減號 */
.faq-item summary::after {
  content: '';
  flex: none;
  width: 0.875rem;
  height: 0.875rem;
  background:
    linear-gradient(var(--blue), var(--blue)) center / 100% 2px no-repeat,
    linear-gradient(var(--blue), var(--blue)) center / 2px 100% no-repeat;
}
.faq-item[open] summary::after { background-size: 100% 2px, 0 0; }
.faq-item summary:focus-visible { outline-offset: -2px; }
.faq-item p { padding: 0 1.25rem 1.25rem; font-size: 0.875rem; color: var(--ink-soft); }

/* 聯絡 */
.contact { padding: 5.5rem var(--edge); background: var(--tone); text-align: center; }
.contact h2 { margin-bottom: 1.5rem; font-size: 1.75rem; line-height: 0; }
.contact .kicker { font-weight: 700; }
.contact-logo { width: min(22rem, 80%); height: auto; margin-inline: auto; }
.contact .actions { justify-content: center; margin-bottom: 1rem; }

/* 頁尾 */
.site-footer { padding: 3.5rem var(--edge) 2rem; }
.footer-cols { display: grid; gap: 1rem; padding-top: 1.25rem; border-top: 1px solid var(--hair); font-size: 0.8125rem; color: var(--ink-soft); }
.footer-cols ul { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; }
.footer-cols a { display: inline-block; padding-block: 0.375rem; }
.footer-copy { font-family: var(--font); letter-spacing: 0.16em; }

/* LINE 浮動按鈕：手機為底部滿版，桌機在右下 */
.line-fab {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 15;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  min-height: 3.5rem;
  padding-inline: 1.5rem;
  background: var(--blue);
  color: var(--paper);
  font: 400 0.9375rem/1 var(--font);
  letter-spacing: 0.16em;
  text-decoration: none;
  transition: background-color 0.2s, transform 0.2s;
}
.line-fab:hover { background: #003a88; color: var(--paper); }
.line-fab img { flex: none; width: 1.5rem; height: 1.5rem; }
body { padding-bottom: 3.5rem; }

/* 條款頁／404 */
.page { padding-block: 4rem 6rem; }
.page h1 { margin: 0.75rem 0 1.5rem; font-size: 1.875rem; letter-spacing: 0.1em; }
.page-body .clauses { font-size: 1.0625rem; }
.page-no { color: var(--blue); font: 300 5rem/1 var(--font); font-variant-numeric: lining-nums; }

@media (min-width: 640px) {
  :root { --edge: 2.5rem; }
  .hero-slot { height: 62vw; max-height: none; }
  .hero-text { margin-left: 24%; padding: 2rem 2.5rem 2.5rem; }
  .hero h1 { font-size: 1.625rem; }
  .plan-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 1rem 2rem; }
  .plan-cost { margin-top: 0; text-align: right; }
  .footer-cols { grid-template-columns: 1fr auto auto; gap: 2.5rem; align-items: center; }
}

@media (min-width: 768px) {
  :root { --edge: clamp(2.5rem, 5vw, 5rem); }
  .grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 1.5rem; }

  /* 直排小標 */
  .vlabel {
    grid-column: 1;
    align-self: start;
    flex-direction: row-reverse;
    justify-content: flex-end;
    margin: 0;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 0.9375rem;
    letter-spacing: 0.32em;
  }
  .vlabel::after { width: 1px; height: 7rem; }

  .section { padding-block: 8rem; }
  .section--rule { padding-block: 6rem; }

  /* 首屏：滿版圖位，文字塊壓進圖中 */
  .hero { padding-bottom: 5rem; }
  .hero-slot { height: 74vh; height: 74svh; min-height: 30rem; max-height: 56rem; }
  .hero-slot figcaption { top: auto; bottom: 0; }
  .hero-text { grid-column: 7 / -1; margin: -15.5rem 0 0; padding: 2.75rem 3rem 3rem; }
  .hero h1 { font-size: clamp(1.375rem, 2.05vw, 1.9375rem); }

  /* 狀況：左標右清單，圖下沉 */
  .section--tone > .grid > .vlabel { grid-row: 1 / span 2; }

  .features { grid-column: 2 / -1; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; margin-top: 6rem; }
  .feature { padding: 2rem 1.75rem 1.75rem; }

  /* 工作室：窄文欄，大小圖錯落 */
  #studio .vlabel { grid-row: 1 / span 2; }
  .studio-text { grid-column: 2 / 6; grid-row: 1 / span 2; font-size: 0.9375rem; }
  .slot--before { grid-column: 7 / -1; grid-row: 1; margin: 0 calc(var(--edge) * -1 + 0.625rem) 0 0; }
  .slot--before figcaption { padding: 0; }
  .slot--after { grid-column: 5 / 8; grid-row: 2 / span 2; width: auto; margin: -5rem 0 0; position: relative; z-index: 1; }
  .studio-note { grid-column: 9 / -1; grid-row: 2; margin-top: 1.75rem; }

  /* 刊例 */
  .section--plans { padding-block: 2rem 8rem; }
  .plans-intro h2 { grid-column: 1 / 9; font-size: clamp(2rem, 3.6vw, 3.125rem); letter-spacing: 0.1em; }
  .plans-intro .kicker { grid-column: 1 / -1; margin-bottom: 1.5rem; }
  .plans-lead { grid-column: 9 / -1; margin: 0; align-self: end; font-size: 0.875rem; }
  /* 三欄卡片：編號、圖、標題、價格 */
  .plans { margin-top: 4rem; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 2rem; align-items: start; }
  .plan { padding-block: 0 2rem; }
  .plan .slot--plan, .plan--a .slot--plan, .plan--b .slot--plan, .plan--c .slot--plan { width: 100%; margin: 0 0 1.75rem; }
  .slot--plan .slot-frame, .plan--c .slot--plan .slot-frame { aspect-ratio: 4 / 3; }
  .plan-head { flex-direction: column; align-items: flex-start; }
  .plan-cost { margin-top: 0.75rem; text-align: left; }
  .plan h3 { font-size: clamp(1.375rem, 2.2vw, 1.875rem); letter-spacing: 0.1em; }
  .plan-price { font-size: clamp(2.75rem, 4.6vw, 4rem); }
  .plans-foot { padding-top: 0; }
  .plans-foot .actions { grid-column: 2 / 6; margin: 0; align-self: start; }
  .plans-foot .small { grid-column: 7 / 12; }

  /* 流程：階梯 */
  .process-title { grid-column: 2 / 6; margin: 0; }
  .steps { grid-column: 3 / -1; margin-top: 4rem; grid-row: 2; }
  #process .vlabel, #method .vlabel { grid-row: 1 / span 2; }
  .steps li { grid-template-columns: 4rem 3rem 1fr; padding-block: 1.75rem; max-width: 44rem; }
  .steps li::after { margin-block: -1.75rem; }

  /* 界線 */
  .slot--wide { margin-right: 25%; }
  .slot--wide .slot-frame { aspect-ratio: 21 / 9; }
  .section--boundaries h2 { grid-column: 2 / 7; margin-top: 5rem; }
  .promise { grid-column: 8 / -1; margin-top: 5rem; }
  .caveats { grid-column: 4 / 11; margin-top: 4.5rem; }

  /* 條款：小字雙欄 */
  .section--rule { margin-inline: var(--edge); }
  .terms-side { grid-column: 2 / 6; }
  .clauses { grid-column: 6 / -1; margin: 0; }
  .faq-title { grid-column: 2 / 6; margin: 0; }
  .faq { grid-column: 6 / -1; }

  .contact { padding-block: 8rem; }
  .contact-logo { width: 28rem; }

  .site-footer { padding-top: 6rem; }
  .page { padding-block: 7rem 9rem; }
  .page-body { grid-column: 3 / 11; }
  .page-body .clauses { columns: 1; }
  .page h1 { font-size: 2.5rem; }
  .page-no { font-size: 7.5rem; }
}

@media (min-width: 1280px) {
  .plans { grid-template-columns: repeat(4, minmax(0, 1fr)); column-gap: 1.75rem; }
  #terms .clauses { columns: 2; column-gap: 2.5rem; }
}

@media (min-width: 1024px) {
  html { scroll-padding-top: 6rem; }
  .site-header { min-height: 5rem; }
  /* 首頁：頁頂時透明壓在首圖上，捲動後改為紙色底 */
  .site-header--over { position: fixed; left: 0; right: 0; }
  .hero { padding-top: 5rem; }
  .brand img { height: 2.75rem; }
  body { padding-bottom: 0; }
  .site-footer { padding-bottom: 6rem; }

  .line-fab {
    left: auto;
    right: 2rem;
    bottom: 2rem;
    min-height: 3.25rem;
    font-size: 0.8125rem;
    box-shadow: 0 0.5rem 1.5rem rgb(0 75 173 / 0.28);
  }
  .line-fab:hover { transform: translateY(-2px); }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}