/* ==========================================================================
   香港亨得利鐘錶服務有限公司 — 設計系統
   Hong Kong Hengdeli Watch Service Co., Limited — Design System
   基調：克制的奢華（暖白底 · 深炭字 · 啞金強調 · 大量留白）
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* 背景 */
  --bg-primary: #f7f4ef;
  --bg-secondary: #ffffff;
  --bg-elevated: #efeae2;
  --bg-dark: #1f1d1a;
  --bg-dark-alt: #26231f;

  /* 文字 */
  --text-primary: #1f1d1a;
  --text-secondary: #5c574f;
  --text-muted: #8a8378;
  --text-on-dark: #efeae2;
  --text-on-dark-muted: #a49a8a;

  /* 強調 */
  --accent: #b8935a;
  --accent-hover: #9c7a45;
  --accent-subtle: #e8dcc8;
  --accent-soft: #f2ebdd;

  /* 邊框 */
  --border: #ddd6ca;
  --border-strong: #c4baa8;

  /* 功能色 */
  --success: #4a6b4a;
  --error: #8b3a3a;

  /* 字體 */
  --font-serif: "Noto Serif TC", "Source Han Serif TC", "Songti TC", "STSong",
    "SimSun", Georgia, "Times New Roman", serif;
  --font-sans: "Noto Sans TC", "Source Han Sans TC", "PingFang TC",
    "Microsoft JhengHei", "Helvetica Neue", Arial, sans-serif;
  --font-display-en: "Playfair Display", "Freight Display", Georgia, serif;

  /* 間距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  /* 圓角與陰影 */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(31, 29, 26, 0.04);
  --shadow-md: 0 4px 12px rgba(31, 29, 26, 0.06);
  --shadow-lg: 0 12px 32px rgba(31, 29, 26, 0.08);

  /* 動效 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 200ms;
  --duration-base: 400ms;
  --duration-slow: 800ms;

  /* 佈局 */
  --container: 1200px;
  --header-height: 72px;
}

html[lang^="en"] {
  --font-serif: var(--font-display-en);
}

html[lang="zh-CN"] {
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun",
    Georgia, serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* --------------------------------------------------------------------------
   2. Reset / Base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
h5 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
  color: var(--text-primary);
}

p {
  margin: 0;
}

::selection {
  background: var(--accent-subtle);
  color: var(--text-primary);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   3. Typography
   -------------------------------------------------------------------------- */
.display {
  font-family: var(--font-serif);
  font-size: 56px;
  line-height: 1.15;
  letter-spacing: 0.02em;
  font-weight: 400;
}

.h1 {
  font-size: 40px;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.h2 {
  font-size: 28px;
  line-height: 1.3;
  letter-spacing: 0.02em;
  font-weight: 500;
}

.h3 {
  font-size: 20px;
  line-height: 1.4;
  letter-spacing: 0.01em;
  font-weight: 500;
}

.h4 {
  font-size: 17px;
  line-height: 1.45;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.body {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.small {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.caption {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.lead {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 65ch;
}

.prose p {
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
  max-width: 68ch;
}

.prose p:last-child {
  margin-bottom: 0;
}

.en-sub {
  font-family: var(--font-display-en);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  font-style: italic;
}

.text-accent {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   4. Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.section {
  padding: var(--space-9) 0;
}

.section--tight {
  padding: var(--space-8) 0;
}

.section--elevated {
  background: var(--bg-elevated);
}

.section--white {
  background: var(--bg-secondary);
}

.section--dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: var(--text-on-dark);
}

.section--dark .body,
.section--dark .lead,
.section--dark p {
  color: var(--text-on-dark-muted);
}

.section-head {
  margin-bottom: var(--space-8);
  max-width: 720px;
}

.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head .caption {
  display: block;
  margin-bottom: var(--space-3);
  color: var(--accent);
}

.section-head h2 {
  margin-bottom: var(--space-4);
}

.section-head p {
  color: var(--text-secondary);
}

.hr-gold {
  width: 48px;
  height: 1px;
  background: var(--accent);
  border: 0;
  margin: var(--space-5) 0;
}

.section-head--center .hr-gold {
  margin-left: auto;
  margin-right: auto;
}

.grid {
  display: grid;
  gap: var(--space-5);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-9);
  align-items: start;
}

.split--wide-left {
  grid-template-columns: 1.15fr 0.85fr;
}

/* 格線項目預設 min-width:auto 會被長字串撐開 → 允許收縮（表格自帶橫向捲動） */
.split > *,
.grid > *,
.steps > *,
.trust__grid > *,
.site-footer__top > * {
  min-width: 0;
}

/* --------------------------------------------------------------------------
   5. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 14px 32px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 15px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.btn--primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent-hover);
}

.btn--gold {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn--gold:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn--light {
  background: transparent;
  border-color: rgba(239, 234, 226, 0.4);
  color: var(--text-on-dark);
}

.btn--light:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--sm {
  padding: 10px 20px;
  font-size: 14px;
}

.btn--block {
  width: 100%;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  position: relative;
  padding-bottom: 2px;
}

.link-arrow::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 1px;
  width: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-base) var(--ease-out);
}

.link-arrow:hover {
  color: var(--accent-hover);
}

.link-arrow:hover::after {
  transform: scaleX(1);
}

.link-arrow svg {
  transition: transform var(--duration-fast) var(--ease-out);
}

.link-arrow:hover svg {
  transform: translateX(3px);
}

/* --------------------------------------------------------------------------
   6. Top utility bar
   -------------------------------------------------------------------------- */
.topbar {
  background: var(--bg-dark);
  color: var(--text-on-dark-muted);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 40px;
}

.topbar__group {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.topbar__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.topbar__item svg {
  color: var(--accent);
  flex: none;
}

.topbar a:hover {
  color: var(--text-on-dark);
}

.topbar__phone {
  color: var(--text-on-dark);
  font-weight: 500;
  letter-spacing: 0.03em;
}

.topbar__phone em {
  font-style: normal;
  color: var(--text-on-dark-muted);
  font-size: 12px;
  margin-left: 6px;
}

/* 語言切換 */
.lang {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.lang__item {
  padding: 4px 8px;
  border: 0;
  background: none;
  color: var(--text-on-dark-muted);
  cursor: pointer;
  letter-spacing: 0.06em;
  font-size: 13px;
  border-bottom: 1px solid transparent;
  transition: color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

.lang__item:hover {
  color: var(--text-on-dark);
}

.lang__item[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.lang__sep {
  color: rgba(164, 154, 138, 0.5);
}

/* --------------------------------------------------------------------------
   7. Header / Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(247, 244, 239, 0.86);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out);
}

.site-header.is-scrolled {
  background: rgba(247, 244, 239, 0.97);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--header-height);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1 1 auto;
  min-width: 0;
}

.brand__mark {
  width: 40px;
  height: 40px;
  flex: none;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  min-width: 0;
}

.brand__name,
.brand__en {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand__name {
  font-family: var(--font-serif);
  font-size: 17px;
  letter-spacing: 0.06em;
  color: var(--text-primary);
}

.brand__en {
  font-family: var(--font-display-en);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 0;
  white-space: nowrap;
}

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 10px 12px;
  font-size: 14.5px;
  color: var(--text-primary);
  letter-spacing: 0.03em;
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-base) var(--ease-out);
}

.nav__link:hover {
  color: var(--accent-hover);
}

.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav__link[aria-current="page"] {
  color: var(--accent-hover);
}

.nav__caret {
  transition: transform var(--duration-fast) var(--ease-out);
}

.has-menu:hover .nav__caret,
.has-menu:focus-within .nav__caret {
  transform: rotate(180deg);
}

/* 下拉 */
.has-menu {
  position: relative;
}

.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 260px;
  padding: var(--space-3);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out),
    visibility var(--duration-fast);
}

.has-menu:hover .dropdown,
.has-menu:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown__link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast) var(--ease-out);
}

.dropdown__link:hover {
  background: var(--accent-soft);
}

.dropdown__link strong {
  font-weight: 500;
  font-size: 14.5px;
  letter-spacing: 0.02em;
}

.dropdown__link span {
  font-size: 12.5px;
  color: var(--text-muted);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: none;
}

.header__phone {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.3;
}

.header__phone span {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.header__phone strong {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.header__phone:hover strong {
  color: var(--accent-hover);
}

.burger {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: transparent;
  cursor: pointer;
  padding: 0;
  place-items: center;
}

.burger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-primary);
  position: relative;
}

.burger span::before,
.burger span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.5px;
  background: var(--text-primary);
  transition: transform var(--duration-fast) var(--ease-out);
}

.burger span::before {
  top: -6px;
}

.burger span::after {
  top: 6px;
}

/* 移動端全屏菜單 */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--bg-primary);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out), visibility var(--duration-base);
  overflow-y: auto;
}

.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-menu__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--border);
}

.mobile-menu__close {
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: none;
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
}

.mobile-menu__nav {
  flex: 1;
  padding: var(--space-5) 0;
}

.mobile-menu__nav a {
  display: block;
  padding: 14px 0;
  font-family: var(--font-serif);
  font-size: 20px;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border);
}

.mobile-menu__sub {
  padding-left: var(--space-5);
}

.mobile-menu__sub a {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
}

.mobile-menu__foot {
  padding-top: var(--space-5);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.mobile-menu__foot .lang__item {
  color: var(--text-muted);
  font-size: 15px;
  padding: 6px 12px;
}

.mobile-menu__foot .lang__item[aria-current="page"] {
  color: var(--accent-hover);
}

/* --------------------------------------------------------------------------
   8. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #fbf9f5 0%, var(--bg-primary) 100%);
  padding: var(--space-10) 0 var(--space-9);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-9);
  align-items: center;
  min-height: 62vh;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero__eyebrow::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--accent);
}

.hero h1 {
  margin-bottom: var(--space-4);
}

.hero__en {
  font-family: var(--font-display-en);
  font-size: 20px;
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  letter-spacing: 0.02em;
}

.hero__desc {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 52ch;
  margin-bottom: var(--space-7);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.hero__art {
  position: relative;
  display: grid;
  place-items: center;
}

.hero__art svg {
  width: 100%;
  max-width: 460px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
}

.stat__num {
  font-family: var(--font-serif);
  font-size: 32px;
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.stat__num small {
  font-size: 15px;
  color: var(--text-muted);
  margin-left: 4px;
}

.stat__label {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   9. Trust bar
   -------------------------------------------------------------------------- */
.trust {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--space-6) 0;
}

.trust__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.trust__item {
  text-align: center;
  padding: 0 var(--space-4);
}

.trust__item + .trust__item {
  border-left: 1px solid var(--border-strong);
}

.trust__item svg {
  margin: 0 auto var(--space-3);
  color: var(--accent);
}

.trust__title {
  font-family: var(--font-serif);
  font-size: 16px;
  letter-spacing: 0.03em;
  margin-bottom: 2px;
}

.trust__sub {
  font-size: 12.5px;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

/* --------------------------------------------------------------------------
   10. Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: border-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card__icon {
  width: 44px;
  height: 44px;
  margin-bottom: var(--space-5);
  color: var(--accent);
}

.card__title {
  font-size: 19px;
  margin-bottom: var(--space-2);
  letter-spacing: 0.02em;
}

.card__en {
  font-family: var(--font-display-en);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.card__text {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
  flex: 1;
}

.card__foot {
  margin-top: auto;
}

/* 案例卡 */
.case-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.case-card__media {
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #efeae2 0%, #e3dbcd 100%);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

.case-card__media svg {
  width: 46%;
  color: rgba(184, 147, 90, 0.55);
}

.case-card__tag {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  background: rgba(31, 29, 26, 0.82);
  color: var(--text-on-dark);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
}

.case-card__body {
  padding: var(--space-5);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.case-card__title {
  font-size: 17.5px;
}

.case-card__meta {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.case-card__meta em {
  font-style: normal;
  color: var(--accent-hover);
}

.case-card__text {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   11. Steps / Process
   -------------------------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-5);
  position: relative;
}

.step {
  position: relative;
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-strong);
}

.step::before {
  content: attr(data-step);
  position: absolute;
  top: -15px;
  left: 0;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  background: var(--bg-primary);
  border: 1px solid var(--accent);
  border-radius: 50%;
  font-size: 13px;
  color: var(--accent-hover);
  font-variant-numeric: tabular-nums;
}

.section--elevated .step::before {
  background: var(--bg-elevated);
}

.section--white .step::before {
  background: var(--bg-secondary);
}

.step__title {
  font-size: 17px;
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.step__en {
  font-family: var(--font-display-en);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.step__text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-top: var(--space-7);
  padding: var(--space-5) var(--space-6);
  background: var(--accent-soft);
  border: 1px solid var(--accent-subtle);
  border-radius: var(--radius-md);
}

.notice svg {
  color: var(--accent-hover);
  flex: none;
  margin-top: 2px;
}

.notice strong {
  font-weight: 500;
  color: var(--text-primary);
}

.notice p {
  font-size: 14.5px;
  color: var(--text-secondary);
}

/* 時間軸（沿革） */
.timeline {
  position: relative;
  padding-left: var(--space-7);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--border-strong);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-6);
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-7) + 1px);
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 1px solid var(--accent);
}

.timeline__year {
  font-family: var(--font-serif);
  font-size: 19px;
  color: var(--accent-hover);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.timeline__text {
  font-size: 14.5px;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   12. Accordion
   -------------------------------------------------------------------------- */
.accordion {
  border-top: 1px solid var(--border);
}

.accordion__item {
  border-bottom: 1px solid var(--border);
}

.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-5) 0;
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-serif);
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  transition: color var(--duration-fast) var(--ease-out);
}

.accordion__trigger:hover {
  color: var(--accent-hover);
}

.accordion__sign {
  flex: none;
  width: 20px;
  height: 20px;
  position: relative;
  margin-top: 4px;
}

.accordion__sign::before,
.accordion__sign::after {
  content: "";
  position: absolute;
  background: var(--accent);
  transition: transform var(--duration-base) var(--ease-out),
    opacity var(--duration-base) var(--ease-out);
}

.accordion__sign::before {
  left: 0;
  top: 9.5px;
  width: 20px;
  height: 1px;
}

.accordion__sign::after {
  left: 9.5px;
  top: 0;
  width: 1px;
  height: 20px;
}

.accordion__item.is-open .accordion__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--duration-base) var(--ease-out);
}

.accordion__item.is-open .accordion__panel {
  grid-template-rows: 1fr;
}

.accordion__panel > div {
  overflow: hidden;
}

.accordion__panel p {
  padding-bottom: var(--space-5);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 78ch;
}

/* --------------------------------------------------------------------------
   13. Forms
   -------------------------------------------------------------------------- */
.form {
  display: grid;
  gap: var(--space-5);
}

.form__row {
  display: grid;
  /* 依實際可用寬度自動決定 1 或 2 欄，避免平板／側欄內的欄位被擠到無法閱讀 */
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-5);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field--full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.field label .req {
  color: var(--error);
  margin-left: 2px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 15px;
  color: var(--text-primary);
  transition: border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

.field textarea {
  resize: vertical;
  min-height: 108px;
  line-height: 1.7;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(184, 147, 90, 0.14);
}

.field input::placeholder,
.field textarea::placeholder {
  color: #b3aca1;
}

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%238A8378' stroke-width='1.4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 38px;
}

.field__hint {
  font-size: 12.5px;
  color: var(--text-muted);
}

.field__error {
  font-size: 12.5px;
  color: var(--error);
  display: none;
}

.field.has-error input,
.field.has-error textarea,
.field.has-error select {
  border-color: var(--error);
}

.field.has-error .field__error {
  display: block;
}

/* 誘餌欄位（防垃圾） */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form__status {
  display: none;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: 14.5px;
}

.form__status.is-success,
.form__status.is-error {
  display: flex;
}

.form__status.is-success {
  background: rgba(74, 107, 74, 0.08);
  border: 1px solid rgba(74, 107, 74, 0.3);
  color: var(--success);
}

.form__status.is-error {
  background: rgba(139, 58, 58, 0.07);
  border: 1px solid rgba(139, 58, 58, 0.3);
  color: var(--error);
}

.form__note {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   14. Page hero / Breadcrumb
   -------------------------------------------------------------------------- */
.page-hero {
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  padding: var(--space-8) 0 var(--space-7);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: var(--space-5);
}

.breadcrumb a:hover {
  color: var(--accent-hover);
}

.breadcrumb__sep {
  color: var(--border-strong);
}

.page-hero h1 {
  margin-bottom: var(--space-3);
}

.page-hero__desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 66ch;
}

/* --------------------------------------------------------------------------
   15. Tables / Tags / Stats / Misc
   -------------------------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
}

table.spec {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}

table.spec th,
table.spec td {
  padding: 14px 18px;
  text-align: left;
  font-size: 14.5px;
  border-bottom: 1px solid var(--border);
}

table.spec th {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  background: var(--accent-soft);
  white-space: nowrap;
}

table.spec tr:last-child td {
  border-bottom: 0;
}

table.spec td:first-child {
  color: var(--text-primary);
  font-weight: 500;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.tag {
  padding: 7px 16px;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  font-size: 13.5px;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  transition: border-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.tag:hover {
  border-color: var(--accent);
  color: var(--accent-hover);
}

.ticks {
  display: grid;
  gap: var(--space-3);
}

.ticks li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.ticks svg {
  flex: none;
  margin-top: 5px;
  color: var(--accent);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.tabs__btn {
  padding: 9px 20px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  border-radius: 100px;
  font-size: 14px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.tabs__btn:hover {
  border-color: var(--accent);
  color: var(--accent-hover);
}

.tabs__btn[aria-selected="true"] {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: var(--bg-primary);
}

.quote {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  height: 100%;
}

.quote__mark {
  font-family: var(--font-display-en);
  font-size: 40px;
  line-height: 0.7;
  color: var(--accent-subtle);
}

.quote__text {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-primary);
  flex: 1;
}

.quote__who {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}

.info-list {
  display: grid;
  gap: var(--space-5);
}

.info-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

/* 長字串（電郵、地址）不可撐破容器 */
.info-item > div {
  min-width: 0;
}

.info-item__value,
.footer-contact__row,
.footer-brand p {
  overflow-wrap: anywhere;
}

.info-item__icon {
  width: 40px;
  height: 40px;
  flex: none;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--accent);
  background: var(--bg-secondary);
}

.info-item__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.info-item__value {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--text-primary);
}

.info-item__value a:hover {
  color: var(--accent-hover);
}

.info-item__value .phone-strong {
  font-size: 19px;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

.info-item__value .phone-alt {
  display: block;
  font-size: 13.5px;
  color: var(--text-muted);
  margin-top: 2px;
}

.map-embed {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-elevated);
  aspect-ratio: 16 / 9;
  position: relative;
}

.map-embed iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.map-embed--fallback {
  display: grid;
  place-items: center;
  text-align: center;
  padding: var(--space-6);
  gap: var(--space-3);
}

/* CTA band */
.cta-band {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  padding: var(--space-8) 0;
}

.cta-band__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-7);
  flex-wrap: wrap;
}

.cta-band h2 {
  color: var(--text-on-dark);
  margin-bottom: var(--space-2);
}

.cta-band p {
  color: var(--text-on-dark-muted);
  font-size: 15px;
}

.cta-band__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* 404 */
.empty-state {
  text-align: center;
  padding: var(--space-10) 0;
  max-width: 620px;
  margin: 0 auto;
}

.empty-state__code {
  font-family: var(--font-serif);
  font-size: 96px;
  line-height: 1;
  color: var(--accent-subtle);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-4);
}

/* --------------------------------------------------------------------------
   16. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--bg-dark);
  color: var(--text-on-dark-muted);
  padding: var(--space-9) 0 var(--space-5);
  font-size: 14px;
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.35fr;
  gap: var(--space-7);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid rgba(196, 186, 168, 0.18);
}

.site-footer h4 {
  color: var(--text-on-dark);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}

.site-footer a {
  color: var(--text-on-dark-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

.site-footer a:hover {
  color: var(--accent);
}

.footer-brand__mark {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer-brand__name {
  font-family: var(--font-serif);
  color: var(--text-on-dark);
  font-size: 17px;
  letter-spacing: 0.04em;
}

.footer-brand__en {
  font-family: var(--font-display-en);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-on-dark-muted);
}

.footer-brand p {
  font-size: 13.5px;
  line-height: 1.85;
  max-width: 34ch;
}

.footer-list {
  display: grid;
  gap: 10px;
}

.footer-list a {
  font-size: 14px;
}

.footer-contact {
  display: grid;
  gap: var(--space-4);
}

.footer-contact__row {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: 13.5px;
  line-height: 1.75;
}

.footer-contact__row svg {
  color: var(--accent);
  flex: none;
  margin-top: 3px;
}

.footer-contact__row .phone-strong {
  color: var(--text-on-dark);
  font-size: 17px;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

.footer-contact__row .phone-alt {
  display: block;
  font-size: 12.5px;
  color: var(--text-on-dark-muted);
}

.brn-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: var(--space-4);
  padding: 7px 14px;
  border: 1px solid rgba(184, 147, 90, 0.45);
  border-radius: 100px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  flex-wrap: wrap;
  padding-top: var(--space-5);
  font-size: 12.5px;
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}

.footer-lang {
  display: flex;
  gap: var(--space-2);
}

.footer-lang .lang__item {
  color: var(--text-on-dark-muted);
}

/* 底部固定操作條出現時，預留空間避免遮擋頁腳內容 */
@media (max-width: 1079px) {
  .site-footer {
    padding-bottom: 104px;
  }

  .float-btn.back-to-top {
    display: none;
  }

  .float-btn.back-to-top.is-visible {
    display: grid;
  }
}

/* --------------------------------------------------------------------------
   17. Floating widgets
   -------------------------------------------------------------------------- */
.float-bar {
  display: none;
  position: fixed;
  z-index: 50;
  gap: 10px;
}

.float-btn {
  flex: 1 1 0;
  height: 46px;
  width: auto;
  display: grid;
  place-items: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}

/* 手機與平板：底部固定操作條（此時導航收合，需要快速撥號入口） */
@media (max-width: 1079px) {
  .float-bar {
    display: flex;
    left: var(--space-4);
    right: var(--space-4);
    bottom: var(--space-4);
  }
}

/* 寬螢幕：右側豎排，置於內容區之外，不遮擋正文 */
@media (min-width: 1400px) {
  .float-bar {
    display: flex;
    left: auto;
    right: calc((100vw - var(--container)) / 2 - 64px);
    bottom: 96px;
    flex-direction: column;
  }

  .float-btn {
    flex: none;
    width: 48px;
    height: 48px;
  }
}

.float-btn:hover {
  color: var(--accent-hover);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.float-btn__tip {
  display: none;
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-dark);
  color: var(--text-on-dark);
  font-size: 12.5px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-fast) var(--ease-out);
  pointer-events: none;
}

@media (min-width: 1400px) {
  .float-btn__tip {
    display: block;
  }
}

.float-btn:hover .float-btn__tip {
  opacity: 1;
  visibility: visible;
}

.float-btn--accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.float-btn--accent:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.back-to-top {
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: all var(--duration-base) var(--ease-out);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

/* Cookie bar */
.cookie-bar {
  position: fixed;
  left: var(--space-4);
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: 70;
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-5);
  display: none;
  gap: var(--space-5);
  align-items: center;
  flex-wrap: wrap;
}

/* 底部操作條顯示時，Cookie 提示條上移 */
@media (max-width: 1079px) {
  .cookie-bar {
    bottom: 80px;
  }
}

.cookie-bar.is-visible {
  display: flex;
}

.cookie-bar p {
  flex: 1;
  min-width: 240px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.cookie-bar__actions {
  display: flex;
  gap: var(--space-3);
}

/* --------------------------------------------------------------------------
   18. Reveal animation
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   19. Responsive
   -------------------------------------------------------------------------- */
/* 平板橫向（1024×768 等）：壓縮導航，保留完整選單而不用漢堡 */
@media (max-width: 1200px) {
  .site-header__inner {
    gap: 10px;
  }

  .nav__link {
    padding: 10px 9px;
    font-size: 13.5px;
  }

  .nav__link::after {
    left: 9px;
    right: 9px;
  }

  .brand__name {
    font-size: 15.5px;
  }

  .brand__en {
    font-size: 9.5px;
  }

  .btn--sm {
    padding: 9px 14px;
    font-size: 13.5px;
  }
}

@media (max-width: 1160px) {
  .header__phone {
    display: none;
  }
}

@media (max-width: 1080px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6) var(--space-5);
  }

  .site-footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }
}

/* 平板豎向 / 手機：改用手機全屏選單 */
@media (max-width: 1000px) {
  .nav {
    display: none;
  }

  .burger {
    display: grid;
  }

  /* 頂欄地址較長，先隱藏以免溢出 */
  .topbar__hide-md {
    display: none;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 64px;
  }

  .display {
    font-size: 36px;
  }

  .h1 {
    font-size: 28px;
  }

  .h2 {
    font-size: 22px;
  }

  .section {
    padding: var(--space-7) 0;
  }

  .hero {
    padding: var(--space-8) 0 var(--space-7);
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: var(--space-7);
    min-height: 0;
  }

  .hero__art {
    order: -1;
  }

  .hero__art svg {
    max-width: 300px;
  }

  .split,
  .split--wide-left {
    grid-template-columns: 1fr;
    gap: var(--space-7);
  }

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .trust__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .trust__item:nth-child(odd) {
    border-left: 0;
  }

  .step {
    padding-top: var(--space-5);
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .container {
    padding: 0 var(--space-4);
  }

  .topbar__inner {
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px var(--space-4);
    min-height: 0;
    padding: 8px 0;
  }

  .topbar__group {
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px var(--space-4);
  }

  .topbar__hide-sm {
    display: none;
  }

  .topbar__phone em {
    margin-left: 4px;
    font-size: 11px;
  }

  /* 極窄螢幕（320px）時讓 +86 提示自行換行，避免撐破頂欄 */
  .topbar__phone {
    flex-wrap: wrap;
    justify-content: center;
    white-space: normal;
  }

  .topbar__phone em {
    white-space: normal;
  }

  /* 手機寬度不足以同時容納品牌、CTA 與漢堡 → 只留漢堡（CTA 仍在全屏選單與底部操作條內） */
  .header__actions .btn {
    display: none;
  }

  /* 品牌英文副標題最長，手機上省略以保證品牌中文名完整 */
  .brand__en {
    display: none;
  }

  /* 觸控目標加大 */
  .lang__item {
    padding: 8px 12px;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .hero__stats {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .site-footer__top {
    grid-template-columns: 1fr;
  }

  .brand__name {
    font-size: 15px;
  }

  .display {
    font-size: 30px;
  }

  .empty-state__code {
    font-size: 72px;
  }
}

/* 極窄螢幕（320px）：縮小品牌字級，讓完整站點名仍能顯示 */
@media (max-width: 380px) {
  .brand {
    gap: var(--space-2);
  }

  .brand__name {
    font-size: 14px;
  }
}

/* --------------------------------------------------------------------------
   20. Accessibility / Print
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-5);
  z-index: 200;
  padding: 12px 20px;
  background: var(--text-primary);
  color: var(--bg-primary);
  border-radius: var(--radius-md);
  font-size: 14px;
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-3);
}

.noscript-note {
  max-width: 640px;
  margin: 80px auto;
  padding: 32px;
  line-height: 1.8;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
}

.noscript-note h1 {
  font-size: 22px;
  margin-bottom: 12px;
}

.noscript-note p {
  color: var(--text-secondary);
}