/* ==========================================================================
   TEEVEN LUKE — brand site stylesheet
   Light, editorial, warm-neutral. System fonts only (fast + reliable).
   ========================================================================== */

:root {
  --ivory: #FBF8F3;
  --sand: #F3ECE2;
  --sand-2: #E8DDCE;
  --ink: #221F1C;
  --ink-2: #3B3530;
  --muted: #7A716A;
  --line: #E4D9CB;
  --accent: #A5643C;
  --accent-2: #C08A63;
  --sage: #7B8874;

  --serif: ui-serif, Georgia, "Times New Roman", "Songti SC", "Noto Serif SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --max: 1200px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* height:auto 必须显式声明，否则 <img> 的 height 属性会作为表现性提示锁死高度，
   让下面的 aspect-ratio 失效 */
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 28px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 400; letter-spacing: -.01em; margin: 0; }
h1 { font-size: clamp(34px, 4.4vw, 58px); line-height: 1.08; }
h2 { font-size: clamp(28px, 3.2vw, 42px); line-height: 1.15; }
h3 { font-size: 21px; line-height: 1.3; }
p { margin: 0; }

.eyebrow {
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 18px;
}

.lead { font-size: 17px; color: var(--ink-2); line-height: 1.75; }
.section-lead { font-size: 16.5px; color: var(--muted); line-height: 1.75; max-width: 640px; margin-top: 20px; }
.fineprint { font-size: 12px; color: var(--muted); margin-top: 22px; font-style: italic; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: background .3s var(--ease), color .3s var(--ease),
              border-color .3s var(--ease), transform .3s var(--ease);
}
.btn-primary { background: var(--ink); color: var(--ivory); }
.btn-primary:hover { background: var(--accent); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--ivory); transform: translateY(-2px); }
.btn-sm { padding: 10px 20px; font-size: 11px; }
.btn-lg { padding: 17px 34px; font-size: 13px; margin-top: 30px; }
/* 邮箱地址保持原样大小写，不做大写转换 */
.btn-email { text-transform: none; letter-spacing: .02em; font-size: 14px; }

/* ---------- announcement bar ---------- */
.announce { background: var(--ink); color: #D9D0C4; font-size: 12px; letter-spacing: .05em; }
.announce-inner { display: flex; gap: 10px; align-items: center; justify-content: center; padding: 9px 28px; flex-wrap: wrap; }
.announce a { color: var(--ivory); border-bottom: 1px solid rgba(251, 248, 243, .35); }
.announce a:hover { border-color: var(--ivory); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 248, 243, .9);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 74px; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 38px; height: 38px; flex: 0 0 38px;
  display: grid; place-items: center;
  background: var(--ink); color: var(--ivory);
  font-family: var(--serif); font-size: 21px; line-height: 1;
  border-radius: 2px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-family: var(--serif); font-size: 19px; letter-spacing: .14em; font-weight: 400; }
.brand-text em { font-style: normal; font-size: 10px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }

.nav { display: flex; gap: 34px; }
.nav a {
  font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-2); padding: 6px 0; position: relative;
}
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1px; width: 0;
  background: var(--accent); transition: width .35s var(--ease);
}
.nav a:hover::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 18px; }
.lang { display: flex; align-items: center; gap: 5px; font-size: 11px; letter-spacing: .1em; }
.lang-btn {
  background: none; border: 0; padding: 4px 2px; cursor: pointer;
  font: inherit; letter-spacing: .1em; color: var(--muted);
  border-bottom: 1px solid transparent; transition: color .25s, border-color .25s;
}
.lang-btn.is-active { color: var(--ink); border-bottom-color: var(--ink); font-weight: 700; }
.lang-sep { color: var(--line); }

.burger { display: none; background: none; border: 0; cursor: pointer; padding: 8px 4px; }
.burger span { display: block; width: 22px; height: 1.5px; background: var(--ink); margin: 5px 0; transition: transform .3s var(--ease), opacity .3s; }
.burger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-panel { display: none; flex-direction: column; border-top: 1px solid var(--line); background: var(--ivory); padding: 8px 28px 20px; }
.mobile-panel a { padding: 13px 0; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; border-bottom: 1px solid var(--line); }
.mobile-panel.is-open { display: flex; }

/* ---------- hero ---------- */
.hero { padding: 72px 0 88px; }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 64px; align-items: center; }
.hero-copy h1 { margin-bottom: 26px; }
.hero-copy .lead { max-width: 520px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 36px; }
.hero-meta {
  list-style: none; padding: 0; margin: 42px 0 0;
  display: flex; gap: 30px; flex-wrap: wrap;
  border-top: 1px solid var(--line); padding-top: 22px;
}
.hero-meta li { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); position: relative; padding-left: 18px; }
.hero-meta li::before { content: ""; position: absolute; left: 0; top: 50%; width: 6px; height: 6px; margin-top: -3px; border-radius: 50%; background: var(--accent-2); }

.hero-visual { position: relative; }
.hero-visual img {
  width: 100%; aspect-ratio: 4 / 3; object-fit: cover;
  border-radius: 3px;
  box-shadow: 0 30px 60px -34px rgba(34, 31, 28, .38);
}

/* ---------- sections ---------- */
.section { padding: 100px 0; }
.section-sand { background: var(--sand); }
.section-head { max-width: 760px; margin-bottom: 64px; }
.section-head h2 { margin-bottom: 0; }

/* ---------- pillars ---------- */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); }
.pillar { padding: 38px 34px 8px 0; position: relative; }
.pillar + .pillar { padding-left: 34px; border-left: 1px solid var(--line); }
.pillar-no { font-family: var(--serif); font-size: 13px; letter-spacing: .18em; color: var(--accent); display: block; margin-bottom: 16px; }
.pillar h3 { margin-bottom: 14px; }
.pillar p { color: var(--muted); font-size: 15px; line-height: 1.75; }

/* ---------- product grid ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 44px 30px; }

.card { background: var(--ivory); border-radius: 3px; overflow: hidden; display: flex; flex-direction: column;
        box-shadow: 0 20px 44px -34px rgba(34, 31, 28, .34);
        transition: transform .5s var(--ease), box-shadow .5s var(--ease); }
.card:hover { transform: translateY(-6px); box-shadow: 0 34px 60px -34px rgba(34, 31, 28, .42); }
.card-media { position: relative; overflow: hidden; background: var(--sand-2); }
.card-media img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; transition: transform .9s var(--ease); }
.card:hover .card-media img { transform: scale(1.045); }
.tag {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  background: rgba(251, 248, 243, .94); color: var(--accent);
  font-size: 10px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  padding: 6px 11px; border-radius: 999px;
}
.card-body { padding: 24px 24px 28px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { margin-bottom: 12px; }
.card-body p { color: var(--muted); font-size: 14.5px; line-height: 1.7; }

.specs { list-style: none; padding: 0; margin: 20px 0 0; border-top: 1px solid var(--line); padding-top: 16px; }
.specs li { display: flex; justify-content: space-between; gap: 14px; font-size: 12px; padding: 5px 0; }
.specs span { color: var(--muted); letter-spacing: .08em; text-transform: uppercase; }
.specs b { font-weight: 600; color: var(--ink-2); text-align: right; }

.grid-note { margin-top: 52px; text-align: center; color: var(--muted); font-size: 15px; }

/* ---------- capability ---------- */
.cap-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.cap-visual img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 3px; box-shadow: 0 30px 60px -36px rgba(34, 31, 28, .36); }
.cap-copy h2 { margin-bottom: 24px; }
.cap-copy > p { color: var(--muted); font-size: 15.5px; line-height: 1.8; }

.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); margin-top: 40px; border: 1px solid var(--line); }
.stat { background: var(--ivory); padding: 24px 22px; }
.stat b { display: block; font-family: var(--serif); font-size: 30px; font-weight: 400; color: var(--accent); line-height: 1.1; }
.stat span { display: block; font-size: 12.5px; color: var(--muted); margin-top: 8px; line-height: 1.5; }

/* ---------- contact ---------- */
.section-contact { background: var(--ink); color: var(--ivory); }
.section-contact .eyebrow { color: var(--accent-2); }
.section-contact .section-lead { color: rgba(251, 248, 243, .72); }
.section-contact .btn-primary { background: var(--ivory); color: var(--ink); }
.section-contact .btn-primary:hover { background: var(--accent-2); color: var(--ivory); }

.contact-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 70px; align-items: start; }
.contact-copy h2 { margin-bottom: 8px; }

.contact-info { border: 1px solid rgba(251, 248, 243, .16); border-radius: 3px; padding: 34px 32px; }
.contact-info h3 { font-size: 15px; letter-spacing: .14em; text-transform: uppercase; font-family: var(--sans); font-weight: 600; color: rgba(251, 248, 243, .6); margin-bottom: 22px; }
.contact-info dl { margin: 0; }
.contact-info dl > div { display: grid; grid-template-columns: 118px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid rgba(251, 248, 243, .1); }
.contact-info dl > div:last-child { border-bottom: 0; padding-bottom: 0; }
.contact-info dt { font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: rgba(251, 248, 243, .55); padding-top: 2px; }
.contact-info dd { margin: 0; font-size: 14.5px; line-height: 1.6; }
.contact-info dd a { border-bottom: 1px solid rgba(251, 248, 243, .4); }
.contact-info dd a:hover { border-color: var(--accent-2); color: var(--accent-2); }

/* ---------- footer ---------- */
.site-footer { background: var(--ivory); border-top: 1px solid var(--line); padding: 52px 0 40px; }
.footer-inner { display: grid; gap: 22px; }
.footer-brand { display: flex; align-items: flex-start; gap: 14px; }
.footer-brand strong { font-family: var(--serif); font-size: 18px; letter-spacing: .14em; font-weight: 400; }
.footer-brand p { color: var(--muted); font-size: 13.5px; margin-top: 6px; max-width: 560px; }
.footer-legal { font-size: 12.5px; line-height: 1.75; color: var(--muted); border-left: 2px solid var(--line); padding-left: 14px; }
.footer-legal strong { color: var(--ink-2); font-weight: 500; letter-spacing: .04em; }
.footer-legal .legal-note { display: block; margin-top: 9px; font-size: 12px; color: var(--muted); }
.contact-info dd .dd-sub { display: block; margin-top: 3px; font-size: 12.5px; color: var(--muted); }
.footer-links { display: flex; gap: 26px; flex-wrap: wrap; font-size: 13.5px; color: var(--ink-2); }
.footer-links a { border-bottom: 1px solid var(--line); }
.footer-links a:hover { border-color: var(--accent); color: var(--accent); }
.copyright { font-size: 12px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 20px; }

/* ---------- legal pages (privacy policy) ---------- */
.legal-page { padding: 76px 0 104px; }
.legal-head { max-width: 800px; padding-bottom: 34px; border-bottom: 1px solid var(--line); margin-bottom: 46px; }
.legal-head h1 { margin-bottom: 18px; }
.legal-updated { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.legal-body { max-width: 800px; }
.legal-body section { padding-bottom: 34px; margin-bottom: 34px; border-bottom: 1px solid var(--line); }
.legal-body section:last-child { border-bottom: 0; margin-bottom: 0; padding-bottom: 0; }
.legal-body h2 { font-size: 21px; margin-bottom: 14px; }
.legal-body p { color: var(--ink-2); font-size: 15.5px; line-height: 1.85; }
.legal-body p + p { margin-top: 14px; }
.legal-body ul { margin: 14px 0 0; padding-left: 20px; }
.legal-body li { color: var(--ink-2); font-size: 15.5px; line-height: 1.85; margin-bottom: 6px; }
.legal-contact { margin-top: 20px; padding-left: 16px; border-left: 2px solid var(--line);
                 font-size: 14.5px !important; line-height: 1.8 !important; color: var(--muted) !important; }
.legal-contact strong { color: var(--ink-2); font-weight: 500; }
.legal-contact a { color: var(--ink-2); border-bottom: 1px solid var(--line); }
.legal-contact a:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .85s var(--ease), transform .85s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .card, .card-media img, .btn { transition: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual img { aspect-ratio: 16 / 10; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .cap-grid, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
}

@media (max-width: 860px) {
  .nav, .header-actions .btn { display: none; }
  .burger { display: block; }
  .header-inner { height: 66px; }
}

@media (max-width: 700px) {
  .container { padding: 0 20px; }
  .section { padding: 68px 0; }
  .hero { padding: 48px 0 60px; }
  .section-head { margin-bottom: 42px; }
  .product-grid { grid-template-columns: 1fr; gap: 34px; }
  .pillars { grid-template-columns: 1fr; border-top: 0; }
  .pillar { padding: 26px 0; border-top: 1px solid var(--line); }
  .pillar + .pillar { padding-left: 0; border-left: 0; }
  .stats { grid-template-columns: 1fr; }
  .hero-meta { gap: 16px 24px; }
  .contact-info { padding: 26px 22px; }
  .contact-info dl > div { grid-template-columns: 1fr; gap: 4px; }
  .announce-inner { font-size: 11px; }
  .legal-page { padding: 48px 0 68px; }
  .legal-head { margin-bottom: 34px; padding-bottom: 26px; }
  .legal-body h2 { font-size: 19px; }
  .legal-body p, .legal-body li { font-size: 15px; }
}