/* ==========================================================================
   富光股份有限公司 — 水質淨化工程
   style.css  |  單一樣式表
   設計語彙：深海藍 × 銹橘（藍＝乾淨的水，銹＝老舊水管的問題）
   ========================================================================== */

/* ---------- 1. 設計代幣 ---------- */
:root{
  --abyss:#06283D;
  --deep:#0B3B5C;
  --current:#14639B;
  --surface:#3FB6D3;
  --glow:#8FE3F0;
  --foam:#EDF6FA;
  --paper:#FFFFFF;
  --rust:#B4541C;
  --rust-soft:#F7E9DF;
  --ink:#182A34;
  --muted:#5C7382;
  --line:rgba(11,59,92,.14);

  --ff-display:"Noto Serif TC","Songti TC",PMingLiU,"新細明體",serif;
  --ff-body:"Noto Sans TC","PingFang TC","Microsoft JhengHei","微軟正黑體",sans-serif;
  --ff-util:"Barlow Condensed","Noto Sans TC",sans-serif;

  --wrap:1180px;
  --pad:clamp(20px,5vw,48px);
  --radius:4px;
  --shadow-s:0 2px 10px rgba(6,40,61,.07);
  --shadow-m:0 14px 40px rgba(6,40,61,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. 基礎 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--ff-body);font-size:16px;line-height:1.85;
  font-weight:400;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--current);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--abyss)}
:focus-visible{outline:3px solid var(--surface);outline-offset:3px;border-radius:2px}
hr{border:0;border-top:1px solid var(--line);margin:0}

/* ---------- 3. 文字 ---------- */
h1,h2,h3,h4{font-family:var(--ff-display);font-weight:900;line-height:1.32;letter-spacing:.01em;margin:0 0 .55em}
h1{font-size:clamp(30px,4.6vw,54px)}
h2{font-size:clamp(25px,3.2vw,38px)}
h3{font-size:clamp(19px,2vw,23px)}
h4{font-size:17px;font-weight:700}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}

.eyebrow{
  font-family:var(--ff-util);font-size:14px;font-weight:600;
  letter-spacing:.3em;text-transform:uppercase;color:var(--surface);
  display:flex;align-items:center;gap:12px;margin:0 0 14px
}
.eyebrow::before{content:"";width:34px;height:2px;background:currentColor;flex:none}
.eyebrow--rust{color:var(--rust)}
.eyebrow--center{justify-content:center}

.lede{font-size:clamp(16px,1.6vw,19px);color:var(--muted);max-width:62ch}
.small{font-size:13.5px;color:var(--muted);line-height:1.75}
.mark{background:linear-gradient(transparent 62%,var(--glow) 62%);padding:0 2px}
.nowrap{white-space:nowrap}

/* ---------- 4. 版面 ---------- */
.wrap{width:min(var(--wrap),100% - var(--pad)*2);margin-inline:auto}
.wrap--narrow{width:min(820px,100% - var(--pad)*2)}
.section{padding-block:clamp(56px,8vw,104px)}
.section--tight{padding-block:clamp(40px,5vw,64px)}
.section--foam{background:var(--foam)}
.section--deep{background:var(--abyss);color:#DCEBF3}
.section--deep h2,.section--deep h3{color:#fff}
.section--deep .lede{color:#9FBDCE}
.section--rust{background:var(--rust-soft)}
.head{max-width:66ch;margin-bottom:clamp(28px,4vw,48px)}
.head--center{margin-inline:auto;text-align:center}
.head--center .eyebrow{justify-content:center}

.grid{display:grid;gap:clamp(16px,2.2vw,26px)}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center}
.split--flip .split__media{order:2}
.stack-sm{display:flex;flex-direction:column;gap:10px}

/* ---------- 5. 水位線（全站識別元素） ---------- */
.waterline{height:5px;background:linear-gradient(90deg,var(--abyss),var(--current) 35%,var(--surface) 65%,var(--glow));border:0}

/* ---------- 6. 按鈕 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--ff-body);font-size:15.5px;font-weight:700;letter-spacing:.06em;
  padding:14px 28px;border-radius:2px;border:2px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .2s,color .2s,border-color .2s;
  text-align:center;line-height:1.4
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--current);color:#fff;border-color:var(--current)}
.btn--primary:hover{background:var(--abyss);border-color:var(--abyss);color:#fff}
.btn--rust{background:var(--rust);color:#fff;border-color:var(--rust)}
.btn--rust:hover{background:#8E3F11;border-color:#8E3F11;color:#fff}
.btn--ghost{background:transparent;color:var(--abyss);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--current);color:var(--current)}
.btn--light{background:#fff;color:var(--abyss);border-color:#fff}
.btn--light:hover{background:var(--glow);border-color:var(--glow);color:var(--abyss)}
.btn--block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- 7. 頁首 ---------- */
.topbar{background:var(--abyss);color:#A9C7D8;font-size:13px;letter-spacing:.04em}
.topbar__in{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:38px;flex-wrap:wrap}
.topbar a{color:var(--glow);font-weight:700}
.topbar a:hover{color:#fff}

.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header__in{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:74px}

.brand{display:flex;align-items:center;gap:12px}
.brand__mark{width:40px;height:40px;flex:none}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__zh{font-family:var(--ff-display);font-weight:900;font-size:22px;color:var(--abyss);letter-spacing:.06em}
.brand__en{font-family:var(--ff-util);font-size:11.5px;letter-spacing:.24em;color:var(--muted);text-transform:uppercase}

.nav{display:flex;align-items:center;gap:4px}
.nav a{
  padding:9px 13px;font-size:15px;font-weight:500;color:var(--ink);border-radius:2px;
  position:relative
}
.nav a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;
  background:var(--surface);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease)
}
.nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
.nav a[aria-current="page"]{color:var(--current);font-weight:700}
.nav__cta{margin-left:10px}

.burger{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:2px;cursor:pointer;align-items:center;justify-content:center}
.burger span{display:block;width:20px;height:2px;background:var(--abyss);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--abyss)}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* ---------- 8. 首頁英雄區 ---------- */
.hero{position:relative;background:var(--abyss);color:#fff;overflow:hidden;isolation:isolate}
.hero__bg{position:absolute;inset:0;z-index:-2}
.hero__bg img{width:100%;height:100%;object-fit:cover}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(6,40,61,.93) 0%,rgba(6,40,61,.78) 42%,rgba(6,40,61,.28) 100%)
}
.hero__in{padding-block:clamp(64px,11vw,132px);max-width:830px}
.hero h1{color:#fff;font-size:clamp(32px,5.4vw,62px);line-height:1.25;letter-spacing:.02em}
.hero h1 em{font-style:normal;color:var(--glow)}
.hero__sub{font-size:clamp(16px,1.8vw,20px);color:#BCD8E6;max-width:56ch;margin-top:4px}
.hero__tri{display:flex;gap:clamp(18px,4vw,44px);margin-bottom:22px;flex-wrap:wrap}
.hero__tri span{font-family:var(--ff-display);font-weight:900;font-size:clamp(18px,2.4vw,26px);color:#fff;letter-spacing:.22em}
.hero__tri span::before{content:"";display:inline-block;width:7px;height:7px;background:var(--glow);margin-right:12px;vertical-align:middle;transform:rotate(45deg)}
.hero__specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:30px}
.spec-chip{
  font-family:var(--ff-util);font-size:15px;font-weight:600;letter-spacing:.1em;
  border:1px solid rgba(143,227,240,.42);color:var(--glow);padding:6px 14px;border-radius:2px
}

/* ---------- 9. 水齡尺（招牌互動元件） ---------- */
.agescale{background:var(--abyss);color:#fff;padding-block:clamp(48px,7vw,88px);position:relative}
.agescale__stage{position:relative;border:1px solid rgba(143,227,240,.24);background:#041C2B;overflow:hidden}
.agescale__frames{position:relative;aspect-ratio:16/8}
.agescale__frame{position:absolute;inset:0;opacity:0;transition:opacity .5s var(--ease)}
.agescale__frame img{width:100%;height:100%;object-fit:cover}
.agescale__frame.is-on{opacity:1}
.agescale__label{
  position:absolute;left:0;bottom:0;right:0;padding:20px clamp(16px,3vw,32px);
  background:linear-gradient(transparent,rgba(4,28,43,.94) 55%)
}
.agescale__year{font-family:var(--ff-util);font-size:clamp(38px,7vw,74px);font-weight:600;line-height:.95;color:var(--glow);letter-spacing:.02em}
.agescale__year small{font-size:.35em;letter-spacing:.2em;margin-left:8px;color:#fff}
.agescale__desc{font-size:15px;color:#BCD8E6;margin:6px 0 0;max-width:52ch}
.agescale__ctrl{margin-top:26px}
.agescale__ticks{display:flex;justify-content:space-between;font-family:var(--ff-util);font-size:14px;letter-spacing:.2em;color:#7FA5B9;margin-bottom:8px}
.agescale__ticks b{color:#fff;font-weight:600}
.agescale input[type=range]{width:100%;accent-color:var(--glow);height:26px;cursor:pointer;background:transparent}

/* ---------- 10. 卡片 ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:rgba(20,99,155,.35)}
.card__media{aspect-ratio:4/3;overflow:hidden;background:var(--foam)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card:hover .card__media img{transform:scale(1.05)}
.card__body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:8px;flex:1}
.card__title{font-family:var(--ff-display);font-weight:900;font-size:19px;margin:0;color:var(--abyss)}
.card__text{font-size:14.5px;color:var(--muted);margin:0;flex:1}
.card__tag{font-family:var(--ff-util);font-size:13px;letter-spacing:.18em;color:var(--surface);text-transform:uppercase}
.card__link{font-size:14.5px;font-weight:700;margin-top:6px}
.card__link::after{content:" →"}

.tile{background:#fff;border:1px solid var(--line);padding:26px 24px;border-radius:var(--radius);height:100%}
.tile__num{font-family:var(--ff-util);font-size:15px;font-weight:600;letter-spacing:.18em;color:var(--rust)}
.tile h3{margin:8px 0 8px;font-size:19px}
.tile p{font-size:14.5px;color:var(--muted);margin:0}
.section--deep .tile{background:rgba(255,255,255,.05);border-color:rgba(143,227,240,.2)}
.section--deep .tile p{color:#9FBDCE}

/* ---------- 11. 用途圖卡 ---------- */
.usecase{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);padding:14px;border-radius:var(--radius)}
.usecase img{width:104px;height:104px;object-fit:cover;flex:none;border-radius:2px}
.usecase h4{margin:2px 0 6px;font-family:var(--ff-display);font-size:17px;color:var(--abyss)}
.usecase p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}

/* ---------- 12. 表格 ---------- */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.data{border-collapse:collapse;width:100%;min-width:620px;font-size:14.5px}
table.data th,table.data td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.data thead th{background:var(--abyss);color:#fff;font-family:var(--ff-body);font-weight:700;font-size:14px;letter-spacing:.05em;position:sticky;top:0}
table.data thead th.is-hi{background:var(--current)}
table.data tbody tr:nth-child(even){background:#F7FBFD}
table.data td.yes{color:var(--current);font-weight:700}
table.data td.no{color:var(--rust)}
table.data td.risk{color:var(--muted);font-size:13.5px}

/* ---- 深色區塊內的表格（規格表樣式） ---- */
.section--deep .table-scroll{
  background:rgba(255,255,255,.04);
  border-color:rgba(143,227,240,.28)
}
.section--deep table.data thead th{background:var(--current);color:#fff}
.section--deep table.data th,
.section--deep table.data td{
  border-bottom:1px solid rgba(143,227,240,.16);
  color:#EAF4F9;
  padding:15px 18px
}
.section--deep table.data tbody th{
  color:var(--glow);
  background:rgba(143,227,240,.07);
  font-weight:700;
  letter-spacing:.06em;
  border-right:1px solid rgba(143,227,240,.16);
  white-space:nowrap
}
.section--deep table.data tbody tr:nth-child(even){background:rgba(255,255,255,.035)}
.section--deep table.data tbody tr:hover{background:rgba(143,227,240,.09)}
.section--deep table.data tbody tr:last-child th,
.section--deep table.data tbody tr:last-child td{border-bottom:0}
.section--deep table.data td.risk{color:#9FBDCE}
.section--deep table.data td.yes{color:var(--glow);font-weight:700}
.section--deep table.data td b{color:#fff}
.section--deep table.data .hi{
  color:var(--glow);font-family:var(--ff-util);font-size:22px;
  font-weight:600;letter-spacing:.04em
}
.section--deep table.data .hi a{color:var(--glow)}
.section--deep table.data .hi a:hover{color:#fff}
@media (max-width:560px){
  .section--deep table.data tbody th{white-space:normal}
}

/* ---------- 13. 手風琴 ---------- */
.acc{border-top:1px solid var(--line)}
.acc__item{border-bottom:1px solid var(--line)}
.acc__q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  padding:20px 46px 20px 0;font-family:var(--ff-display);font-weight:700;font-size:17px;
  color:var(--abyss);position:relative;line-height:1.6
}
.acc__q::after{content:"+";position:absolute;right:8px;top:18px;font-size:24px;color:var(--surface);font-family:var(--ff-util);transition:transform .25s var(--ease)}
.acc__item.is-open .acc__q::after{transform:rotate(45deg)}
.acc__a{display:none;padding:0 0 22px;color:var(--muted);font-size:15px;max-width:78ch}
.acc__item.is-open .acc__a{display:block;animation:fade .3s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- 14. 表單 ---------- */
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.field label{font-size:14px;font-weight:700;color:var(--abyss);letter-spacing:.03em}
.field label .req{color:var(--rust);margin-left:3px}
.field input,.field select,.field textarea{
  font-family:var(--ff-body);font-size:15.5px;color:var(--ink);
  padding:12px 14px;border:1px solid var(--line);border-radius:2px;background:#fff;width:100%;
  transition:border-color .2s,box-shadow .2s
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--current);box-shadow:0 0 0 3px rgba(63,182,211,.22)
}
.field textarea{min-height:120px;resize:vertical;line-height:1.8}
.field__hint{font-size:12.5px;color:var(--muted)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,4vw,38px);box-shadow:var(--shadow-s)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted);margin-bottom:16px}
.check input{width:18px;height:18px;flex:none;margin-top:3px;accent-color:var(--current)}
.note{padding:12px 15px;border-left:3px solid var(--surface);background:var(--foam);font-size:14px;color:var(--deep);border-radius:0 2px 2px 0}
.note--warn{border-left-color:var(--rust);background:var(--rust-soft);color:#7A3A12}
.msg{padding:12px 15px;border-radius:2px;font-size:14.5px;font-weight:700;margin-bottom:16px;display:none}
.msg.is-on{display:block}
.msg--ok{background:#E4F5EA;color:#186B37;border:1px solid #A9DCBC}
.msg--err{background:var(--rust-soft);color:#8E3F11;border:1px solid #E0B79C}

/* ---------- 15. 試算器 ---------- */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,36px);align-items:start}
.calc__out{background:var(--abyss);color:#fff;padding:clamp(22px,3.5vw,34px);border-radius:var(--radius);position:sticky;top:96px}
.calc__plan{font-family:var(--ff-display);font-size:25px;font-weight:900;color:var(--glow);margin:6px 0 10px}
.calc__price{font-family:var(--ff-util);font-size:clamp(32px,5vw,46px);font-weight:600;color:#fff;line-height:1.1;letter-spacing:.02em}
.calc__price small{font-size:.34em;color:#9FBDCE;letter-spacing:.1em;margin-left:6px}
.calc__list{list-style:none;padding:0;margin:16px 0 0;font-size:14.5px;color:#BCD8E6}
.calc__list li{padding:7px 0 7px 22px;position:relative;border-top:1px solid rgba(143,227,240,.16)}
.calc__list li::before{content:"";position:absolute;left:0;top:16px;width:8px;height:8px;background:var(--glow);transform:rotate(45deg)}

/* ---------- 16. 流程步驟 ---------- */
.flow{counter-reset:step;display:grid;gap:0}
.flow__item{display:grid;grid-template-columns:88px 1fr;gap:22px;padding:24px 0;border-top:1px solid var(--line)}
.flow__item:last-child{border-bottom:1px solid var(--line)}
.flow__no{font-family:var(--ff-util);font-size:40px;font-weight:600;color:var(--surface);line-height:1}
.flow__item h3{margin:0 0 6px;font-size:20px}
.flow__item p{margin:0;color:var(--muted);font-size:15px}
.flow__meta{font-family:var(--ff-util);font-size:13.5px;letter-spacing:.16em;color:var(--rust);margin-top:8px;display:block}

/* ---------- 17. 統計 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.stat{background:#fff;padding:26px 20px;text-align:center}
.stat__n{font-family:var(--ff-util);font-size:clamp(32px,4.5vw,46px);font-weight:600;color:var(--current);line-height:1}
.stat__l{font-size:13.5px;color:var(--muted);margin-top:6px;letter-spacing:.06em}
.section--deep .stats{background:rgba(143,227,240,.22);border-color:rgba(143,227,240,.22)}
.section--deep .stat{background:var(--abyss)}
.section--deep .stat__n{color:var(--glow)}
.section--deep .stat__l{color:#9FBDCE}

/* ---------- 18. 對照組（髒水照） ---------- */
.evidence{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.evidence figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.evidence img{aspect-ratio:4/3;object-fit:cover;width:100%}
.evidence figcaption{padding:14px 16px;font-size:14px;color:var(--muted);line-height:1.7}
.evidence figcaption b{display:block;color:var(--rust);font-family:var(--ff-display);font-size:16px;margin-bottom:4px}

/* ---------- 19. 頁尾 ---------- */
.site-footer{background:var(--abyss);color:#9FBDCE;padding-block:clamp(44px,6vw,68px) 0;font-size:14.5px}
.site-footer h4{color:#fff;font-family:var(--ff-display);font-size:16px;letter-spacing:.08em;margin:0 0 14px}
.site-footer a{color:#BCD8E6}
.site-footer a:hover{color:var(--glow)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:clamp(24px,4vw,48px)}
.footer-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.footer-brand__zh{font-family:var(--ff-display);font-weight:900;font-size:22px;color:#fff;letter-spacing:.08em}
.footer-note{margin-top:36px;border-top:1px solid rgba(143,227,240,.16);padding-block:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#7FA5B9}

/* ---------- 20. 行動版浮動列 ---------- */
.dock{position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;background:var(--abyss);border-top:1px solid rgba(143,227,240,.24)}
.dock a{flex:1;padding:13px 6px;text-align:center;color:#fff;font-size:14px;font-weight:700;letter-spacing:.05em}
.dock a+a{border-left:1px solid rgba(143,227,240,.2)}
.dock a.is-hot{background:var(--rust)}

/* ---------- 21. 會員／後台 ---------- */
.auth-shell{min-height:64vh;display:grid;place-items:center;padding-block:clamp(40px,6vw,80px);background:var(--foam)}
.auth-card{width:min(460px,100%);background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(26px,4vw,40px);box-shadow:var(--shadow-m)}
.auth-tabs{display:flex;border:1px solid var(--line);border-radius:2px;overflow:hidden;margin-bottom:24px}
.auth-tabs button{flex:1;padding:11px;background:#fff;border:0;cursor:pointer;font-family:var(--ff-body);font-size:15px;font-weight:700;color:var(--muted)}
.auth-tabs button.is-on{background:var(--abyss);color:#fff}

.dash{display:grid;grid-template-columns:238px 1fr;gap:clamp(20px,3vw,40px);align-items:start}
.dash__side{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:20px;position:sticky;top:96px}
.dash__who{padding-bottom:16px;margin-bottom:14px;border-bottom:1px solid var(--line)}
.dash__who b{display:block;font-family:var(--ff-display);font-size:19px;color:var(--abyss)}
.dash__menu{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.dash__menu button{width:100%;text-align:left;background:none;border:0;padding:10px 12px;border-radius:2px;cursor:pointer;font-family:var(--ff-body);font-size:15px;color:var(--ink)}
.dash__menu button:hover{background:var(--foam)}
.dash__menu button.is-on{background:var(--abyss);color:#fff;font-weight:700}
.panel{display:none}
.panel.is-on{display:block;animation:fade .3s var(--ease)}
.kpi{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:26px}
.kpi__box{border:1px solid var(--line);border-radius:var(--radius);padding:18px;background:#fff}
.kpi__n{font-family:var(--ff-util);font-size:32px;font-weight:600;color:var(--current);line-height:1}
.kpi__l{font-size:13px;color:var(--muted);margin-top:4px}

.gauge{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:24px;margin-bottom:22px}
.gauge__bar{height:12px;background:var(--foam);border-radius:99px;overflow:hidden;margin:14px 0 8px}
.gauge__fill{height:100%;background:linear-gradient(90deg,var(--surface),var(--current));border-radius:99px;transition:width .8s var(--ease)}
.gauge__fill.is-due{background:linear-gradient(90deg,#E08A4B,var(--rust))}

.badge{display:inline-block;font-family:var(--ff-util);font-size:13px;letter-spacing:.12em;padding:3px 10px;border-radius:99px}
.badge--ok{background:#E4F5EA;color:#186B37}
.badge--due{background:var(--rust-soft);color:#8E3F11}
.badge--new{background:var(--foam);color:var(--current)}

.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.toolbar input,.toolbar select{padding:9px 12px;border:1px solid var(--line);border-radius:2px;font-family:var(--ff-body);font-size:14.5px}
.btn--sm{padding:9px 16px;font-size:14px}
.empty{padding:44px 20px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:var(--radius);background:#fff}
.empty b{display:block;font-family:var(--ff-display);font-size:18px;color:var(--abyss);margin-bottom:6px}

/* ---------- 22. 內頁頁首 ---------- */
.pagehead{background:var(--abyss);color:#fff;padding-block:clamp(48px,7vw,86px);position:relative;overflow:hidden;isolation:isolate}
.pagehead__bg{position:absolute;inset:0;z-index:-2;opacity:.35}
.pagehead__bg img{width:100%;height:100%;object-fit:cover}
.pagehead::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(6,40,61,.94),rgba(6,40,61,.6))}
.pagehead h1{color:#fff;margin-bottom:12px}
.pagehead p{color:#BCD8E6;max-width:60ch;margin:0}
.crumb{font-family:var(--ff-util);font-size:13.5px;letter-spacing:.18em;color:var(--glow);margin-bottom:16px;text-transform:uppercase}
.crumb a{color:var(--glow)}

/* ---------- 23. 進場動畫 ---------- */
.reveal{opacity:0;transform:translateY(18px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .7s var(--ease),transform .7s var(--ease)}

/* ---------- 24. 響應式 ---------- */
@media (max-width:1000px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .g4{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .kpi{grid-template-columns:repeat(2,1fr)}
  .dash{grid-template-columns:1fr}
  .dash__side{position:static}
  .dash__menu{flex-direction:row;flex-wrap:wrap}
  .dash__menu button{width:auto}
}
@media (max-width:860px){
  .burger{display:flex}
  .nav{
    position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;padding:10px var(--pad) 18px;gap:0;display:none;box-shadow:var(--shadow-m)
  }
  .nav.is-open{display:flex}
  .nav a{padding:13px 4px;border-bottom:1px solid var(--line);font-size:16px}
  .nav a::after{display:none}
  .nav__cta{margin:14px 0 0}
  .split,.calc{grid-template-columns:1fr}
  .split--flip .split__media{order:0}
  .calc__out{position:static}
  .g3,.g2,.evidence{grid-template-columns:1fr}
  .dock{display:flex}
  body{padding-bottom:52px}
  .calc__out{margin-top:8px}
}
@media (max-width:560px){
  .g4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .flow__item{grid-template-columns:56px 1fr;gap:14px}
  .flow__no{font-size:28px}
  .usecase img{width:80px;height:80px}
  .topbar__in{justify-content:center;text-align:center}
  .kpi{grid-template-columns:1fr 1fr}
}

/* ---------- 25. 動態偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ---------- 26. 列印 ---------- */
@media print{
  .site-header,.topbar,.dock,.site-footer,.btn{display:none!important}
  body{color:#000}
}