/* ============================================================
   伊式數位行銷工作室｜樣式表
   版面概念：深藍「舞台」區（主視覺、作品、行動呼籲）與白色「閱讀」區交錯，
   金色只用在重點標示，科技藍只用在互動狀態與示意圖。
   ============================================================ */
:root {
  color-scheme: light;
  /* 色彩 */
  --navy-950: #071328;
  --navy-900: #0B1B34;
  --navy-800: #12284B;
  --navy-700: #1D3A66;
  --ink: #15233B;
  --muted: #56647C;
  --line: #DCE3EE;
  --paper: #FFFFFF;
  --mist: #F3F6FB;
  --gold: #C9A35B;
  --gold-deep: #9C7A36;
  --gold-soft: #F3E7CC;
  --tech: #3B82F6;
  --tech-soft: #DCE9FF;
  --line-green: #06C755;
  --line-green-deep: #05A847;
  --on-dark: #EEF2F8;
  --on-dark-muted: #A9B6CB;
  --red: #B23A3A;
  /* 字體 */
  --f-display: "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  --f-body: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  --f-script: "Allura", "Snell Roundhand", cursive;
  --f-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  /* 尺寸 */
  --wrap: 1180px;
  --r: 14px;
  --r-sm: 9px;
  --shadow: 0 18px 40px -22px rgba(7, 19, 40, .45);
  --header-h: 68px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 60; background: var(--navy-900); }
img, video { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 3px solid var(--tech); outline-offset: 3px; border-radius: 4px; }
[hidden] { display: none !important; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--gold); color: var(--navy-950); padding: 8px 14px; border-radius: 8px; font-weight: 700; text-decoration: none; }
.skip:focus { top: calc(12px + env(safe-area-inset-top, 0px)); }

.wrap {
  width: 100%;
  max-width: calc(var(--wrap) + 48px);
  margin-inline: auto;
  padding-left: max(24px, env(safe-area-inset-left, 0px));
  padding-right: max(24px, env(safe-area-inset-right, 0px));
}

/* ---------- 按鈕 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 50px; padding: 12px 24px;
  border-radius: 999px; border: 1.5px solid transparent;
  font: 700 16px/1.2 var(--f-body); letter-spacing: .02em;
  text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background-color .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-sm { min-height: 40px; padding: 8px 16px; font-size: 14px; }
.btn-block { width: 100%; }
.btn-line { background: var(--line-green); color: #fff; }
.btn-line:hover { background: var(--line-green-deep); }
.btn-navy { background: var(--navy-900); color: #fff; }
.btn-navy:hover { background: var(--navy-700); }
.btn-gold { background: var(--gold); color: var(--navy-950); }
.btn-gold:hover { background: #D7B470; }
.btn-ghost-light { background: transparent; color: var(--on-dark); border-color: rgba(238, 242, 248, .45); }
.btn-ghost-light:hover { border-color: var(--gold); color: #fff; }

/* ---------- 頁首 ---------- */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: rgba(11, 27, 52, .94);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid rgba(201, 163, 91, .18);
  color: var(--on-dark);
}
.header-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: var(--header-h); }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
.logo-yi { font: 400 44px/1 var(--f-script); color: var(--gold); margin-top: -6px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-text b { font-size: 16px; letter-spacing: .12em; }
.logo-text small { font-size: 11px; letter-spacing: .18em; color: var(--on-dark-muted); text-transform: uppercase; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a:not(.btn) { padding: 8px 12px; border-radius: 8px; text-decoration: none; font-size: 15px; color: var(--on-dark); }
.nav a:not(.btn):hover { color: var(--gold); }
.nav-cta { margin-left: 8px; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; padding: 10px; cursor: pointer; flex-direction: column; justify-content: center; gap: 5px; }
.nav-toggle span { display: block; height: 2px; background: var(--on-dark); border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 主視覺 ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 480px at 85% 10%, rgba(59, 130, 246, .22), transparent 60%),
    radial-gradient(700px 400px at 0% 100%, rgba(201, 163, 91, .14), transparent 60%),
    var(--navy-900);
  color: var(--on-dark);
}
.hero::after { /* 細格線：網站與數據的底紋 */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, #000 30%, transparent 95%);
  -webkit-mask-image: linear-gradient(180deg, #000 30%, transparent 95%);
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; padding-block: 72px 88px; }
.hero-copy { min-width: 0; }
.eyebrow { font-size: 13px; font-weight: 700; letter-spacing: .2em; color: var(--gold-deep); margin-bottom: 14px; }
.eyebrow-gold { color: var(--gold); }
.hero h1 { font-family: var(--f-display); font-weight: 900; font-size: clamp(34px, 5.2vw, 60px); line-height: 1.22; letter-spacing: .02em; color: #fff; }
.hero-sub { margin-top: 22px; font-size: 17px; color: var(--on-dark-muted); max-width: 34em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-motto { margin-top: 28px; padding-left: 14px; border-left: 2px solid var(--gold); font-family: var(--f-display); font-weight: 600; font-size: 17px; color: var(--gold-soft); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.hero-tags li { font-size: 13px; padding: 4px 12px; border-radius: 999px; border: 1px solid rgba(169, 182, 203, .35); color: var(--on-dark-muted); }

.hero-visual { position: relative; min-width: 0; padding: 28px 0 40px 28px; }
.hero-frame { margin: 0; border-radius: 16px; overflow: hidden; background: var(--navy-800); border: 1px solid rgba(255,255,255,.12); box-shadow: 0 40px 80px -40px rgba(0,0,0,.7); }
.frame-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: rgba(7, 19, 40, .7); }
.frame-bar i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,.25); }
.frame-bar span { margin-left: 10px; font: 500 11px/1 var(--f-mono); color: var(--on-dark-muted); background: rgba(255,255,255,.07); padding: 5px 10px; border-radius: 6px; }
.hero-frame img { width: 100%; height: auto; aspect-ratio: 1 / 1; object-fit: cover; }
.hero-frame figcaption { position: absolute; left: 44px; bottom: 56px; font-size: 13px; letter-spacing: .14em; color: #fff; background: rgba(7, 19, 40, .72); padding: 6px 12px; border-radius: 6px; }

.chip { position: absolute; background: rgba(255,255,255,.97); color: var(--ink); border-radius: 12px; box-shadow: var(--shadow); padding: 12px 14px; font-size: 13px; line-height: 1.5; }
.chip-k { display: block; font: 500 10.5px/1 var(--f-mono); letter-spacing: .08em; color: var(--tech); margin-bottom: 6px; }
.chip-search { top: 0; right: -8px; width: 250px; }
.chip-search b { display: block; color: #1a0dab; font-size: 14px; font-weight: 500; }
.chip-search em { font-style: normal; color: var(--muted); font-size: 12px; }
.chip-video { left: 0; top: 46%; display: flex; align-items: center; gap: 12px; border: 0; cursor: pointer; text-align: left; font-family: inherit; transition: transform .15s ease; }
.chip-video:hover { transform: scale(1.03); }
.chip-video b { display: block; font-size: 14px; }
.chip-video em { font-style: normal; color: var(--muted); font-size: 12px; }
.play { width: 38px; height: 38px; border-radius: 50%; background: var(--navy-900); position: relative; flex: none; }
.play::after { content: ""; position: absolute; left: 15px; top: 12px; border-left: 11px solid var(--gold); border-top: 7px solid transparent; border-bottom: 7px solid transparent; }
.chip-line { right: 4px; bottom: 0; width: 262px; background: #EEF3EA; }
.chip-line .chip-k { color: var(--line-green-deep); }
.bubble { padding: 7px 11px; border-radius: 14px; max-width: 92%; font-size: 12.5px; }
.bubble-in { background: #fff; border-top-left-radius: 4px; }
.bubble-out { background: #A6E08A; margin: 6px 0 0 auto; border-top-right-radius: 4px; }

/* ---------- 開幕慶 ---------- */
.promo { background: #FBF7EE; border-bottom: 1px solid #EBDDBF; }
.promo-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; padding-block: 64px; align-items: start; }
.promo-copy { min-width: 0; }
.promo-badge { display: inline-block; background: var(--red); color: #fff; font-weight: 700; font-size: 15px; letter-spacing: .06em; padding: 6px 18px; border-radius: 999px; }
.promo h2 { margin-top: 18px; font-family: var(--f-display); font-weight: 900; color: var(--ink); line-height: 1.3; }
.promo h2 span { display: block; font-size: clamp(22px, 3vw, 30px); }
.promo h2 strong { display: block; font-size: clamp(40px, 6vw, 64px); color: var(--red); letter-spacing: .04em; }
.promo-copy > p { margin-top: 12px; font-size: 16.5px; color: #3D4657; }
.promo-effects { margin-top: 22px; display: grid; gap: 10px; }
.promo-effects li { position: relative; padding: 12px 16px 12px 46px; background: #fff; border: 1px solid #EADFC8; border-radius: 12px; }
.promo-effects li::before { content: "✓"; position: absolute; left: 16px; top: 10px; font-weight: 900; font-size: 20px; color: #138A3E; }
.promo-effects b { display: block; font-size: 16px; }
.promo-effects span { display: block; font-size: 14px; color: var(--muted); }
.promo-effects s { color: #8A93A3; }
.promo-effects em { font-style: normal; font-weight: 700; color: var(--red); }
.promo-side { min-width: 0; display: grid; gap: 14px; }
.tiers { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.tier { background: #fff; border: 1px solid #EADFC8; border-radius: 14px; padding: 16px 12px; text-align: center; }
.tier p { font-weight: 700; font-size: 14px; color: var(--ink); }
.tier b { display: block; font-size: 28px; line-height: 1.3; color: var(--red); font-variant-numeric: tabular-nums; }
.tier small { color: var(--muted); font-size: 13px; }
.tier-free { background: var(--red); border-color: var(--red); }
.tier-free p, .tier-free b, .tier-free small { color: #fff; }
.tier-best { border: 2px solid var(--gold); }
.promo-fine { font-size: 13px; color: var(--muted); }
.promo-motto { background: #1F1A14; color: #E9CF8E; text-align: center; font-family: var(--f-display); font-weight: 900; font-size: 22px; padding: 14px; border-radius: 12px; letter-spacing: .06em; }
.promo-actions { display: grid; gap: 10px; }
.promo .btn-ghost-light { color: var(--ink); border-color: #CDBF9F; background: #fff; }
.promo .btn-ghost-light:hover { border-color: var(--gold-deep); color: var(--ink); }

/* ---------- 一般區塊 ---------- */
.section { padding-block: 96px; }
.section-tint { background: var(--mist); }
.section-dark { background: var(--navy-950); color: var(--on-dark); }
.sec-head { max-width: 720px; margin-bottom: 44px; }
.sec-head h2, .why-intro h2, .cta h2 { font-family: var(--f-display); font-weight: 900; font-size: clamp(28px, 3.6vw, 42px); line-height: 1.3; letter-spacing: .02em; }
.lead { margin-top: 16px; font-size: 17px; color: var(--muted); max-width: 40em; }
.section-dark .lead, .cta .lead { color: var(--on-dark-muted); }
.section-dark h2 { color: #fff; }
.note { margin-top: 24px; font-size: 14px; color: var(--muted); padding: 14px 18px; background: var(--mist); border-radius: var(--r-sm); }

/* 困擾對照表 */
.pain-table { border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.pain-row { display: grid; grid-template-columns: 1fr 1.25fr; }
.pain-row + .pain-row { border-top: 1px solid var(--line); }
.pain-row > * { padding: 18px 24px; min-width: 0; }
.pain-head { background: var(--navy-900); color: var(--on-dark); font-size: 13px; font-weight: 700; letter-spacing: .14em; }
.pain-head span { padding-block: 12px; }
.pain { font-weight: 700; color: var(--ink); position: relative; padding-left: 48px !important; }
.pain::before { content: ""; position: absolute; left: 24px; top: 28px; width: 10px; height: 2px; background: var(--red); }
.fix { color: #33415A; background: #FAFBFD; border-left: 1px solid var(--line); position: relative; padding-left: 48px !important; }
.fix::before { content: ""; position: absolute; left: 22px; top: 25px; width: 8px; height: 8px; border-right: 2px solid var(--tech); border-top: 2px solid var(--tech); transform: rotate(45deg); }

/* 服務卡片 */
.svc-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.svc { display: flex; flex-direction: column; gap: 14px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 26px 24px 24px; scroll-margin-top: calc(var(--header-h) + 16px); }
.svc-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.svc-no { font-family: var(--f-display); font-weight: 900; font-size: 15px; color: var(--navy-900); border-bottom: 2px solid var(--gold); padding-bottom: 2px; }
.tag { font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.tag-ok { background: #E3F5EA; color: #11733A; }
.tag-mix { background: var(--tech-soft); color: #1D4FB0; }
.svc h3 { font-size: 21px; line-height: 1.45; color: var(--navy-900); }
.svc-pain, .svc-value { font-size: 14.5px; color: var(--muted); }
.svc-pain b, .svc-value b { display: block; font-size: 12px; letter-spacing: .12em; color: var(--gold-deep); margin-bottom: 2px; }
.ticks { display: grid; gap: 6px; font-size: 15px; }
.ticks li { position: relative; padding-left: 22px; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 10px; height: 6px; border-left: 2px solid var(--tech); border-bottom: 2px solid var(--tech); transform: rotate(-45deg); }
.svc-req { font-size: 14px; background: var(--mist); border-radius: var(--r-sm); padding: 10px 14px; }
.svc-req summary { cursor: pointer; font-weight: 700; color: #1D4FB0; }
.svc-req p { margin-top: 8px; color: var(--muted); }
.svc .btn { margin-top: auto; }

/* 作品 */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.filter { font: 700 14px/1 var(--f-body); color: var(--on-dark-muted); background: transparent; border: 1px solid rgba(169,182,203,.35); padding: 11px 18px; border-radius: 999px; cursor: pointer; }
.filter:hover { color: #fff; border-color: rgba(255,255,255,.6); }
.filter.is-on { background: var(--gold); border-color: var(--gold); color: var(--navy-950); }
.works-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.work { display: flex; flex-direction: column; background: var(--navy-800); border: 1px solid rgba(255,255,255,.08); border-radius: var(--r); overflow: hidden; min-width: 0; }
.work-cover { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--navy-700); border: 0; padding: 0; cursor: pointer; display: block; width: 100%; }
.work-cover img { width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: transform .4s ease; }
.work-cover[data-ratio="tall"] img { object-position: center 30%; }
.work:hover .work-cover img { transform: scale(1.04); }
.work-cover .cover-play { position: absolute; inset: auto auto 14px 14px; width: 48px; height: 48px; border-radius: 50%; background: rgba(7,19,40,.82); border: 1.5px solid var(--gold); }
.work-cover .cover-play::after { content: ""; position: absolute; left: 19px; top: 14px; border-left: 14px solid var(--gold); border-top: 9px solid transparent; border-bottom: 9px solid transparent; }
.work-badge { position: absolute; top: 12px; left: 12px; font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; }
.badge-real { background: var(--gold); color: var(--navy-950); }
.badge-concept { background: var(--tech); color: #fff; }
.badge-pending { background: rgba(255,255,255,.14); color: var(--on-dark); border: 1px dashed rgba(255,255,255,.4); }
.work-body { display: flex; flex-direction: column; gap: 8px; padding: 20px 20px 22px; flex: 1; }
.work-kind { font-size: 12.5px; color: var(--gold); letter-spacing: .06em; }
.work h3 { text-wrap: pretty; font-size: 18px; line-height: 1.5; color: #fff; }
.work-sum { font-size: 14.5px; color: var(--on-dark-muted); flex: 1; }
.work-btn { align-self: flex-start; margin-top: 6px; font: 700 14px/1 var(--f-body); color: var(--navy-950); background: var(--on-dark); border: 0; border-radius: 999px; padding: 11px 18px; cursor: pointer; text-decoration: none; display: inline-flex; gap: 6px; align-items: center; }
.work-btn:hover { background: var(--gold); }
.work-btn[disabled] { background: transparent; color: var(--on-dark-muted); border: 1px dashed rgba(255,255,255,.3); cursor: default; }
.work-pending .work-cover { cursor: default; }
.ph { width: 100%; height: 100%; display: grid; place-items: center; text-align: center; color: var(--on-dark-muted); background: repeating-linear-gradient(135deg, rgba(255,255,255,.03) 0 12px, transparent 12px 24px), var(--navy-700); font-size: 14px; }
.ph b { display: block; font-size: 30px; font-family: var(--f-display); color: rgba(255,255,255,.25); }
/* 概念示意封面（純 CSS 繪製） */
.cv { width: 100%; height: 100%; padding: 18px; display: flex; flex-direction: column; justify-content: center; gap: 8px; background: linear-gradient(160deg, #13305A, #0B1B34); font-family: var(--f-mono); font-size: 12px; color: var(--on-dark); }
.cv-row { display: flex; gap: 8px; align-items: center; }
.cv-pill { padding: 5px 10px; border-radius: 6px; background: rgba(59,130,246,.22); border: 1px solid rgba(59,130,246,.5); white-space: nowrap; }
.cv-pill.g { background: rgba(201,163,91,.2); border-color: rgba(201,163,91,.6); }
.cv-pill.l { background: rgba(6,199,85,.18); border-color: rgba(6,199,85,.55); }
.cv-arrow { color: var(--gold); }
.works-cta { margin-top: 40px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 26px; border-radius: var(--r); background: var(--navy-800); border: 1px solid rgba(201,163,91,.3); }
.works-cta p { font-size: 17px; color: #fff; }
.works-cta.is-empty { display: none; }

/* 為什麼選擇 */
.why-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; align-items: start; }
.why-intro { position: sticky; top: calc(var(--header-h) + 32px); min-width: 0; }
.founder { margin: 28px 0 0; display: flex; align-items: center; gap: 16px; }
.founder img { width: 112px; height: 112px; border-radius: 50%; object-fit: cover; border: 3px solid var(--gold-soft); }
.founder figcaption { font-size: 14px; color: var(--muted); }
.founder figcaption b { display: block; font-family: var(--f-display); font-size: 22px; color: var(--navy-900); }
.why-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--line); }
.why-list li { padding: 26px 22px 26px 0; border-bottom: 1px solid var(--line); min-width: 0; }
.why-list li:nth-child(odd) { padding-right: 28px; }
.why-list li:nth-child(even) { padding-left: 28px; border-left: 1px solid var(--line); }
.why-list h3 { font-size: 18px; line-height: 1.5; color: var(--navy-900); margin-bottom: 6px; }
.why-list h3::before { content: ""; display: block; width: 22px; height: 3px; background: var(--gold); margin-bottom: 14px; }
.why-list p { font-size: 15px; color: var(--muted); }

/* 流程 */
.steps { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; counter-reset: s; }
.steps li { position: relative; padding: 0 18px 0 0; min-width: 0; }
.steps li::before { content: ""; position: absolute; top: 23px; left: 52px; right: 0; height: 2px; background: repeating-linear-gradient(90deg, var(--gold) 0 6px, transparent 6px 12px); }
.steps li:last-child::before { display: none; }
.step-n { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--navy-900); color: var(--gold); font: 900 20px/1 var(--f-display); margin-bottom: 18px; position: relative; }
.steps h3 { font-size: 17px; line-height: 1.5; color: var(--navy-900); margin-bottom: 6px; }
.steps p { font-size: 14.5px; color: var(--muted); }

/* FAQ */
.faq-wrap { max-width: 920px; }
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 4px; font-size: 17.5px; font-weight: 700; color: var(--navy-900); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; flex: none; width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--line); background: linear-gradient(var(--navy-900), var(--navy-900)) center / 10px 2px no-repeat, linear-gradient(var(--navy-900), var(--navy-900)) center / 2px 10px no-repeat; transition: transform .2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); border-color: var(--gold); }
.faq summary:hover { color: var(--navy-700); }
.faq-a { padding: 0 44px 24px 4px; color: #3F4B60; }

/* 行動呼籲 */
.cta { background: radial-gradient(800px 420px at 100% 0%, rgba(59,130,246,.2), transparent 60%), var(--navy-900); color: var(--on-dark); }
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; padding-block: 96px; align-items: start; }
.cta-copy { min-width: 0; }
.cta h2 { color: #fff; }
.contact-card { margin-top: 36px; display: flex; gap: 20px; align-items: center; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); border-radius: var(--r); padding: 18px; }
.contact-card img { width: 120px; height: 120px; object-fit: contain; border-radius: 10px; background: #fff; padding: 6px; flex: none; }
.contact-k { font-weight: 700; color: #fff; }
.contact-card p { font-size: 14.5px; color: var(--on-dark-muted); }
.contact-list { margin-top: 8px; font-size: 14.5px; display: grid; gap: 2px; }
.contact-list b { color: var(--gold); font-weight: 500; margin-right: 6px; }

.brief { background: var(--paper); color: var(--ink); border-radius: 18px; padding: 30px; box-shadow: 0 30px 60px -30px rgba(0,0,0,.6); min-width: 0; }
.brief h3 { font-family: var(--f-display); font-size: 24px; color: var(--navy-900); }
.brief-note { margin: 8px 0 18px; font-size: 13.5px; color: var(--muted); }
.brief-note b { color: var(--ink); }
.field { margin: 0 0 16px; border: 0; padding: 0; min-width: 0; }
.field label, .field legend { display: block; font-size: 14px; font-weight: 700; margin-bottom: 6px; padding: 0; }
.req { font-size: 12px; font-weight: 500; color: var(--red); margin-left: 4px; }
.field input[type="text"], .field select, .field textarea, .brief-out textarea {
  width: 100%; font: 400 16px/1.5 var(--f-body); color: var(--ink);
  padding: 11px 14px; border: 1.5px solid var(--line); border-radius: 10px; background: #fff;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--tech); outline: none; box-shadow: 0 0 0 3px var(--tech-soft); }
.field .is-bad { border-color: var(--red); }
.checks { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px; }
.checks label { font-weight: 400; display: flex; gap: 8px; align-items: center; font-size: 15px; margin: 0; cursor: pointer; }
.checks input { width: 18px; height: 18px; accent-color: var(--navy-900); }
.err { color: var(--red); font-size: 13px; margin-top: 6px; }
.brief-out { margin-top: 18px; display: grid; gap: 10px; }
.brief-ok { font-size: 14px; font-weight: 700; color: #11733A; }
.brief-out textarea { font-size: 14px; background: var(--mist); }

/* 頁尾 */
.footer { background: var(--navy-950); color: var(--on-dark-muted); font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; padding-block: 64px 40px; }
.footer-brand { display: grid; gap: 16px; justify-items: start; }
.footer-brand p { max-width: 30em; }
.logo-light { color: var(--on-dark); }
.footer-h { font-size: 13px; letter-spacing: .16em; color: var(--gold); margin-bottom: 14px; }
.footer ul { display: grid; gap: 8px; }
.footer a:not(.btn):not(.logo) { text-decoration: none; }
.footer a:not(.btn):not(.logo):hover { color: #fff; text-decoration: underline; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-block: 20px calc(20px + env(safe-area-inset-bottom, 0px)); font-size: 13px; }

/* 手機固定聯絡列 */
.mobile-bar { display: none; }

/* 彈出視窗 */
.modal { width: min(920px, calc(100vw - 24px)); max-height: calc(100dvh - 24px); padding: 0; border: 0; border-radius: 18px; background: var(--paper); color: var(--ink); box-shadow: 0 40px 100px rgba(0,0,0,.5); }
.modal::backdrop { background: rgba(7,19,40,.78); }
.modal-in { display: flex; flex-direction: column; max-height: calc(100dvh - 24px); }
.modal-head { display: flex; justify-content: space-between; gap: 16px; align-items: start; padding: 20px 22px 14px; border-bottom: 1px solid var(--line); }
.modal-kind { font-size: 12.5px; color: var(--gold-deep); letter-spacing: .06em; }
.modal-head h2 { font-size: 19px; line-height: 1.45; color: var(--navy-900); }
.modal-x { flex: none; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line); background: #fff; font-size: 24px; line-height: 1; cursor: pointer; color: var(--ink); }
.modal-x:hover { background: var(--mist); }
.modal-body { padding: 20px 22px 24px; overflow: auto; }
.modal-video { display: flex; justify-content: center; background: #000; border-radius: 12px; overflow: hidden; }
.modal-video video { max-height: min(70dvh, 720px); width: auto; max-width: 100%; }
.modal-sum { margin-top: 14px; font-size: 15px; color: var(--muted); }
/* 前後對照 */
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: start; }
.pair figure { margin: 0; position: relative; border-radius: 12px; overflow: hidden; border: 1px solid var(--line); background: var(--mist); }
.pair img { width: 100%; height: auto; }
.pair-tag { position: absolute; top: 10px; left: 10px; font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: rgba(7,19,40,.82); color: #fff; }
.pair-tag-a { background: var(--gold); color: var(--navy-950); }
@media (max-width: 680px) { .pair { grid-template-columns: 1fr; } }
/* 示意圖 */
.dg-note { display: inline-block; font-size: 12px; font-weight: 700; color: #1D4FB0; background: var(--tech-soft); padding: 3px 10px; border-radius: 999px; margin-bottom: 14px; }
.dg-flow { display: grid; gap: 10px; }
.dg-step { display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: start; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.dg-step b { display: block; color: var(--navy-900); }
.dg-step p { font-size: 14px; color: var(--muted); }
.dg-ico { width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center; font: 700 13px/1 var(--f-mono); color: #fff; background: var(--navy-900); }
.dg-ico.g { background: var(--line-green-deep); } .dg-ico.t { background: var(--tech); } .dg-ico.o { background: var(--gold-deep); }
.dg-step.req { border-style: dashed; background: var(--mist); }
.dg-kw { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 520px; }
.dg-kw th, .dg-kw td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.dg-kw th { font-size: 12px; letter-spacing: .1em; color: var(--muted); }
.dg-kw td:first-child { font-weight: 700; color: var(--navy-900); white-space: nowrap; }
.dg-scroll { overflow-x: auto; }
.kw { display: inline-block; font: 500 12.5px/1.4 var(--f-mono); background: var(--mist); border: 1px solid var(--line); padding: 3px 8px; border-radius: 6px; margin: 2px 4px 2px 0; }

/* ---------- 響應式 ---------- */
@media (max-width: 1080px) {
  .svc-grid, .works-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: 1fr; gap: 0; }
  .steps li { display: grid; grid-template-columns: 48px 1fr; column-gap: 18px; padding: 0 0 26px; }
  .steps li::before { top: 52px; bottom: 4px; left: 23px; right: auto; width: 2px; height: auto; background: repeating-linear-gradient(180deg, var(--gold) 0 6px, transparent 6px 12px); }
  .step-n { grid-row: span 2; margin: 0; }
  .why-grid { grid-template-columns: 1fr; gap: 40px; }
  .why-intro { position: static; }
}
@media (max-width: 960px) {
  .nav-toggle { display: flex; }
  .nav {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--navy-900); border-bottom: 1px solid rgba(201,163,91,.25);
    padding: 8px max(16px, env(safe-area-inset-right, 0px)) 16px max(16px, env(safe-area-inset-left, 0px));
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a:not(.btn) { padding: 14px 8px; border-bottom: 1px solid rgba(255,255,255,.06); font-size: 16px; }
  .nav-cta { margin: 14px 0 0; }
  .hero-grid, .promo-grid, .cta-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-grid { padding-block: 48px 64px; }
  .hero-visual { max-width: 520px; width: 100%; margin-inline: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
  .wrap { padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
  .section { padding-block: 64px; }
  .sec-head { margin-bottom: 32px; }
  .svc-grid, .works-grid { grid-template-columns: 1fr; }
  .pain-head { display: none; }
  .pain-row { grid-template-columns: 1fr; }
  .pain-row > * { padding: 14px 18px; }
  .pain { padding-left: 40px !important; padding-bottom: 6px !important; }
  .pain::before { left: 18px; top: 26px; }
  .fix { border-left: 0; background: transparent; padding-top: 0 !important; padding-left: 40px !important; }
  .fix::before { left: 16px; top: 8px; }
  .why-list { grid-template-columns: 1fr; }
  .why-list li, .why-list li:nth-child(odd), .why-list li:nth-child(even) { padding: 22px 0; border-left: 0; }
  .hero-visual { padding: 24px 0 70px 0; max-width: 340px; }
  .chip-search { width: 210px; right: -4px; }
  .chip-video { left: -4px; top: auto; bottom: 120px; }
  .chip-line { width: 230px; right: 0; }
  .hero-frame figcaption { display: none; }
  .hero-actions .btn { flex: 1 1 100%; }
  .cta-grid { padding-block: 64px; }
  .brief { padding: 22px 18px; }
  .checks { grid-template-columns: 1fr; }
  .contact-card { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .tier b { font-size: 24px; }
  .faq summary { font-size: 16.5px; }
  .faq-a { padding-right: 4px; }
  .works-cta { flex-direction: column; align-items: stretch; text-align: left; }
  /* 手機固定聯絡列：頁面底部預留同樣高度，避免遮住內容 */
  body { padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px)); }
  .mobile-bar {
    display: grid; grid-template-columns: 1fr 2fr; gap: 8px;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
    padding: 10px max(12px, env(safe-area-inset-right, 0px)) calc(10px + env(safe-area-inset-bottom, 0px)) max(12px, env(safe-area-inset-left, 0px));
    background: rgba(255,255,255,.96); border-top: 1px solid var(--line);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  }
  .mobile-bar a { display: grid; place-items: center; min-height: 50px; border-radius: 999px; font-weight: 700; text-decoration: none; }
  .mb-works { border: 1.5px solid var(--navy-900); color: var(--navy-900); }
  .mb-line { background: var(--line-green); color: #fff; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}