/* ===========================================================
   帛締能量咖啡 — 全站共用樣式
   金木水火土・五行能量耳掛咖啡｜中國風・清新・質感
   =========================================================== */

:root {
  /* 品牌主色 — 墨綠 / 金 */
  --color-primary: #2f5d50;      /* 墨綠 */
  --color-primary-dark: #1f3f37;
  --color-accent: #c2a14d;       /* 質感金 */
  --color-accent-soft: #e7d8b1;
  --color-ink: #2b2b28;          /* 墨字 */
  --color-muted: #6f7670;
  --color-bg: #f7f4ec;           /* 宣紙米白 */
  --color-bg-soft: #fbf9f3;
  --color-surface: #ffffff;
  --color-line: #e3ddcd;

  /* 五行色 */
  --el-jin: #c9a227;   /* 金 */
  --el-mu: #5b8a4e;    /* 木 */
  --el-shui: #3a6b8a;  /* 水 */
  --el-huo: #b4543a;   /* 火 */
  --el-tu: #a9824f;    /* 土 */

  --font-serif: "Noto Serif TC", "Songti TC", "STSong", serif;
  --font-sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;

  --maxw: 1180px;
  --gutter: clamp(1.2rem, 5vw, 3rem);
  --radius: 14px;
  --shadow: 0 12px 34px rgba(31, 63, 55, 0.12);
  --transition: .25s ease;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, .brand-name {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .04em;
}

/* ---------- 版面容器 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(3.5rem, 8vw, 6rem); }
.section--soft { background: var(--color-bg-soft); }

.section-head {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: clamp(2rem, 5vw, 3.2rem);
}
.section-head .eyebrow {
  display: inline-block;
  font-family: var(--font-serif);
  color: var(--color-accent);
  letter-spacing: .35em;
  font-size: .8rem;
  margin-bottom: .8rem;
}
.section-head h2 {
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  margin: 0 0 .8rem;
  color: var(--color-primary-dark);
}
.section-head p { color: var(--color-muted); margin: 0; }

/* ---------- 按鈕 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  padding: .7em 1.6em;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .05em;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: var(--transition);
}
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); }
.btn--gold { background: var(--color-accent); color: #fff; }
.btn--gold:hover { background: #ab8d3c; transform: translateY(-2px); }
.btn--ghost { border-color: rgba(255,255,255,.7); color: #fff; }
.btn--ghost:hover { background: rgba(255,255,255,.15); }
.btn--outline { border-color: var(--color-primary); color: var(--color-primary); }
.btn--outline:hover { background: var(--color-primary); color: #fff; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 244, 236, .9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: .9rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-serif);
}
.brand .mark {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--color-accent), var(--color-primary));
  color: #fff;
  display: grid; place-items: center;
  font-size: 1.1rem; font-weight: 700;
}
.brand-name { font-size: 1.2rem; color: var(--color-primary-dark); }
.brand-sub { display: block; font-size: .62rem; letter-spacing: .3em; color: var(--color-muted); font-family: var(--font-sans); }

.nav-links { display: flex; align-items: center; gap: 1.6rem; list-style: none; margin: 0; padding: 0; }
.nav-links a { font-size: .95rem; color: var(--color-ink); transition: var(--transition); }
.nav-links a:hover, .nav-links a.active { color: var(--color-accent); }

.nav-toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 42px; height: 42px;
}
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--color-ink); margin: 5px auto; transition: var(--transition); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  color: #fff;
  background: linear-gradient(rgba(31,63,55,.55), rgba(31,63,55,.65)), var(--color-primary) center/cover no-repeat;
  background-image: linear-gradient(rgba(31,63,55,.5), rgba(31,63,55,.68)), url('../images2/hero-bg.png');
  background-size: cover;
  background-position: center;
}
.hero-inner {
  min-height: clamp(440px, 72vh, 640px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 1.4rem;
  padding-block: clamp(3rem, 9vw, 6rem);
  max-width: 720px;
}
.hero .eyebrow {
  font-family: var(--font-serif);
  letter-spacing: .4em;
  color: var(--color-accent-soft);
  font-size: .85rem;
}
.hero h1 {
  font-size: clamp(2.1rem, 6vw, 3.6rem);
  margin: 0;
  line-height: 1.25;
  text-shadow: 0 2px 14px rgba(0,0,0,.25);
}
.hero p {
  font-size: clamp(1rem, 2.4vw, 1.2rem);
  max-width: 46ch;
  color: rgba(255,255,255,.92);
  margin: 0;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: .6rem; }

/* 小頁面 banner */
.page-hero {
  background: linear-gradient(rgba(31,63,55,.6), rgba(31,63,55,.7)), var(--color-primary);
  color: #fff;
  text-align: center;
}
.page-hero .container { padding-block: clamp(3rem, 8vw, 4.5rem); }
.page-hero h1 { font-size: clamp(1.9rem, 5vw, 3rem); margin: 0 0 .6rem; }
.page-hero p { color: var(--color-accent-soft); margin: 0; letter-spacing: .1em; }

/* ---------- 五行說明 ---------- */
.elements {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.2rem;
}
.element-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.8rem 1.2rem;
  text-align: center;
  transition: var(--transition);
  border-top: 4px solid var(--el);
}
.element-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.element-card .glyph {
  width: 60px; height: 60px;
  margin: 0 auto .9rem;
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-serif);
  font-size: 1.7rem; color: #fff;
  background: var(--el);
}
.element-card h3 { margin: 0 0 .4rem; color: var(--color-primary-dark); }
.element-card p { margin: 0; font-size: .9rem; color: var(--color-muted); }
.el-jin { --el: var(--el-jin); }
.el-mu { --el: var(--el-mu); }
.el-shui { --el: var(--el-shui); }
.el-huo { --el: var(--el-huo); }
.el-tu { --el: var(--el-tu); }

/* ---------- 產品卡 ---------- */
.products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.6rem;
}
.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.product-card .thumb { aspect-ratio: 4/3; background: var(--color-bg-soft); overflow: hidden; }
.product-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.product-card:hover .thumb img { transform: scale(1.05); }
.product-card .body { padding: 1.3rem 1.3rem 1.5rem; display: flex; flex-direction: column; gap: .5rem; flex: 1; }
.product-card .tag {
  align-self: flex-start;
  font-size: .72rem; letter-spacing: .2em;
  color: #fff; padding: .2em .8em; border-radius: 999px;
  background: var(--el, var(--color-accent));
}
.product-card h3 { margin: .2rem 0 0; color: var(--color-primary-dark); font-size: 1.25rem; }
.product-card .desc { margin: 0; font-size: .9rem; color: var(--color-muted); flex: 1; }
.product-card .price { font-family: var(--font-serif); color: var(--color-accent); font-size: 1.2rem; }

/* ---------- 特色 / 步驟 ---------- */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.6rem; }
.feature {
  text-align: center; padding: 1.6rem 1.2rem;
}
.feature .ico {
  width: 56px; height: 56px; margin: 0 auto 1rem;
  border-radius: 50%; display: grid; place-items: center;
  background: var(--color-accent-soft); color: var(--color-primary-dark);
  font-size: 1.5rem;
}
.feature h3 { margin: 0 0 .5rem; color: var(--color-primary-dark); }
.feature p { margin: 0; color: var(--color-muted); font-size: .92rem; }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.4rem; counter-reset: step; }
.step { position: relative; padding: 1.6rem; background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--radius); }
.step::before {
  counter-increment: step; content: counter(step,decimal-leading-zero);
  font-family: var(--font-serif); color: var(--color-accent); font-size: 1.6rem; display: block; margin-bottom: .5rem;
}
.step h3 { margin: 0 0 .4rem; color: var(--color-primary-dark); font-size: 1.1rem; }
.step p { margin: 0; color: var(--color-muted); font-size: .9rem; }

/* ---------- 雙欄 (圖文) ---------- */
.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: clamp(1.6rem, 5vw, 3.5rem); align-items: center; }
.split .media img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; }
.split h2 { color: var(--color-primary-dark); font-size: clamp(1.6rem, 4vw, 2.3rem); margin-top: 0; }
.split p { color: var(--color-muted); }
.split .eyebrow { color: var(--color-accent); letter-spacing: .35em; font-family: var(--font-serif); font-size: .8rem; }

/* ---------- CTA 區塊 ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--color-primary), var(--color-primary-dark));
  color: #fff; text-align: center; border-radius: var(--radius);
  padding: clamp(2.4rem, 6vw, 3.6rem) var(--gutter);
}
.cta-band h2 { margin: 0 0 .8rem; font-size: clamp(1.6rem, 4vw, 2.3rem); }
.cta-band p { margin: 0 auto 1.6rem; max-width: 48ch; color: rgba(255,255,255,.9); }

/* ---------- 表單 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: clamp(1.8rem, 5vw, 3rem); }
.form { display: grid; gap: 1.1rem; }
.form label { font-size: .9rem; font-weight: 600; color: var(--color-primary-dark); display: grid; gap: .4rem; }
.form input, .form textarea, .form select {
  font-family: inherit; font-size: 1rem;
  padding: .8em 1em; border: 1px solid var(--color-line); border-radius: 10px;
  background: var(--color-surface); color: var(--color-ink);
}
.form input:focus, .form textarea:focus, .form select:focus { outline: 2px solid var(--color-accent); border-color: transparent; }
.info-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.2rem; }
.info-list li { display: flex; gap: .9rem; align-items: flex-start; }
.info-list .ico { font-size: 1.3rem; color: var(--color-accent); }
.info-list strong { display: block; color: var(--color-primary-dark); }
.info-list span { color: var(--color-muted); font-size: .92rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-primary-dark); color: rgba(255,255,255,.82); margin-top: 0; }
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 2rem;
  padding-block: clamp(2.6rem, 6vw, 3.6rem);
}
.site-footer h4 { font-family: var(--font-serif); color: #fff; margin: 0 0 1rem; font-size: 1.05rem; }
.site-footer .brand-name { color: #fff; }
.site-footer .brand-sub { color: var(--color-accent-soft); }
.site-footer p { color: rgba(255,255,255,.7); font-size: .9rem; margin: .3rem 0; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.footer-links a { color: rgba(255,255,255,.78); font-size: .92rem; transition: var(--transition); }
.footer-links a:hover { color: var(--color-accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.15); padding-block: 1.2rem; text-align: center; font-size: .82rem; color: rgba(255,255,255,.6); }

/* ---------- RWD ---------- */
@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--color-bg); border-bottom: 1px solid var(--color-line);
    max-height: 0; overflow: hidden; transition: max-height .3s ease;
  }
  .nav-links.open { max-height: 360px; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: .9rem var(--gutter); width: 100%; border-top: 1px solid var(--color-line); }
  .footer-grid { grid-template-columns: 1fr; gap: 1.6rem; }
}