/* Lanna Labs —— 清迈漆器：雾绿纸面、墨绿字、漆红底上贴金 */
:root {
  --paper: #EEF0EA;
  --paper-2: #E3E7DF;
  --ink: #1C2420;
  --ink-2: #4A554F;
  --line: #C9CEC4;
  --lacquer: #5C1A12;
  --lacquer-deep: #43120C;
  --gold: #C9A04B;
  --on-lacquer: #F3EEE2;
  --error-bg: #F6E3DF;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", "Noto Serif SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color-scheme: light dark;
}
:lang(zh-Hant) {
  --serif: "Songti TC", "Noto Serif CJK TC", "Source Han Serif TC", "Noto Serif TC", "PMingLiU", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans CJK TC", "Microsoft JhengHei", "Segoe UI", sans-serif;
}
:lang(en) {
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121815;
    --paper-2: #19211D;
    --ink: #E6EAE3;
    --ink-2: #A3ADA6;
    --line: #2C3631;
    --lacquer: #4E160F;
    --lacquer-deep: #3A0F0A;
    --error-bg: #3A1D18;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.75 var(--sans);
  overflow-x: hidden;
}
:lang(en) body, body:lang(en) { line-height: 1.6; }
img { max-width: 100%; height: auto; }
p, figcaption { text-wrap: pretty; }
a { color: var(--lacquer); text-underline-offset: .18em; }
@media (prefers-color-scheme: dark) { a { color: var(--gold); } }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, .shots:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 768px) { .wrap { padding: 0 32px; } }
.narrow { max-width: 720px; }
.measure { max-width: 36em; }
:lang(en) .measure { max-width: 40em; }
.muted { color: var(--ink-2); }

.skip { position: absolute; left: -9999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

/* ---------- 顶栏 ---------- */
.top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 24px; padding-top: 18px; padding-bottom: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 700 1.2rem/1 var(--serif); letter-spacing: .01em; }
.brand .mark { width: 30px; height: 30px; color: var(--lacquer); }
@media (prefers-color-scheme: dark) { .brand .mark { color: var(--gold); } }
.nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 20px; font-size: .95rem; }
.nav > a { color: var(--ink); text-decoration: none; }
.nav > a:hover { text-decoration: underline; }
.langs { display: inline-flex; gap: 2px; border: 1px solid var(--line); border-radius: 999px; padding: 2px; }
.langs a { color: var(--ink-2); text-decoration: none; padding: 1px 10px; border-radius: 999px; font-size: .85rem; }
.langs a[aria-current] { background: var(--ink); color: var(--paper); }

/* ---------- 标题和按钮 ---------- */
h1, h2, h3 { font-family: var(--serif); color: var(--ink); }
h1 { text-wrap: balance; font-weight: 800; font-size: clamp(2.05rem, 6.4vw, 4rem); line-height: 1.22; letter-spacing: -.01em; margin: 0 0 20px; }
h2 { font-weight: 700; font-size: clamp(1.45rem, 3.6vw, 1.9rem); line-height: 1.3; margin: 0 0 14px; }
h3 { font-weight: 700; font-size: 1.15rem; line-height: 1.4; margin: 0 0 6px; }
.lead { font-size: clamp(1.08rem, 2.2vw, 1.25rem); color: var(--ink-2); margin: 0 0 28px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 0; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 22px;
  border: 1.5px solid var(--ink); border-radius: 999px; color: var(--ink); background: transparent;
  font: 600 1rem/1.2 var(--sans); text-decoration: none; cursor: pointer;
}
.btn:hover { background: var(--paper-2); }
.btn.primary { background: var(--lacquer); border-color: var(--lacquer); color: var(--on-lacquer); }
.btn.primary:hover { background: var(--lacquer-deep); }
.btn.gold { background: var(--gold); border-color: var(--gold); color: #2A0B07; }
.btn.gold:hover { background: #D8B262; }
.btn.gold-line { border-color: var(--gold); color: var(--gold); }
.btn.gold-line:hover { background: rgba(201, 160, 75, .12); }
.btn.wide { width: 100%; }
@media (min-width: 560px) { .btn.wide { width: auto; min-width: 200px; } }
.btn[disabled] { opacity: .6; cursor: progress; }

/* ---------- 首页 ---------- */
.hero { padding-top: clamp(40px, 9vw, 104px); padding-bottom: clamp(48px, 8vw, 88px); }
.hero h1 { max-width: 15em; }
:lang(en) .hero h1 { max-width: 17em; }
.hero .lead { max-width: 34em; }

.products > .wrap > h2 { margin-bottom: 18px; }
.lacquer {
  position: relative;
  background: var(--lacquer);
  color: var(--on-lacquer);
  border-top: 6px double var(--gold);
  border-bottom: 6px double var(--gold);
  overflow: hidden;
}
.lacquer::before {
  content: ""; position: absolute; inset: 0;
  background: url(pattern.svg) 0 0 / 48px 48px repeat;
  opacity: .32; pointer-events: none;
}
.lacquer-in { position: relative; display: grid; gap: 32px; align-items: center; padding-top: 44px; padding-bottom: 0; }
.lacquer-text { background: var(--lacquer); padding: 4px 0; }
.lacquer h3 { display: flex; align-items: center; gap: 14px; color: var(--on-lacquer); font-size: clamp(1.9rem, 5vw, 2.6rem); margin: 0 0 12px; }
:lang(en) .lacquer h3 { font-family: var(--serif); }
.lacquer .line { font: 700 1.2rem/1.5 var(--serif); color: var(--gold); margin: 0 0 10px; }
.lacquer p { margin: 0 0 16px; max-width: 30em; }
.lacquer .status { display: inline-block; border: 1px solid var(--gold); border-radius: 999px; padding: 2px 14px; font-size: .9rem; color: var(--gold); }
.lacquer-shot { justify-self: center; align-self: end; }
.lacquer-shot .phone { width: min(68vw, 280px); margin-bottom: -96px; }
.lacquer-in { padding-bottom: 0; }
@media (min-width: 820px) {
  .lacquer-in { grid-template-columns: 1.15fr .85fr; padding-top: 64px; }
  .lacquer-in { padding-bottom: 64px; }
  /* 桌面上把文字做成漆器上的描金开光框 */
  .lacquer-text {
    padding: 36px 40px 30px; margin-bottom: 0;
    border: 1px solid rgba(201, 160, 75, .7);
    box-shadow: inset 0 0 0 6px var(--lacquer), inset 0 0 0 7px rgba(201, 160, 75, .4);
  }
  .lacquer-shot .phone { width: 300px; margin-bottom: -214px; }
}
@media (max-width: 819px) { .lacquer-shot { height: 330px; overflow: hidden; } .lacquer-shot .phone { margin-bottom: 0; } }
.app-icon { width: 64px; height: 64px; border-radius: 22%; box-shadow: 0 0 0 1px rgba(0,0,0,.12); }
.lacquer .app-icon { width: 52px; height: 52px; box-shadow: 0 0 0 2px var(--gold); }
.phone {
  display: block; border-radius: 30px; border: 7px solid #111614; background: #111614;
  box-shadow: 0 18px 40px rgba(0, 0, 0, .28);
}
.more { color: var(--ink-2); margin-top: 24px; }

.block { padding-top: clamp(48px, 8vw, 80px); }
.block.first { padding-top: clamp(28px, 6vw, 56px); }
main > :last-child { padding-bottom: clamp(56px, 9vw, 96px); }

/* ---------- 产品页 ---------- */
.app-hero { display: flex; align-items: center; gap: 20px; padding-top: clamp(28px, 6vw, 64px); margin-bottom: 18px; }
.app-hero h1 { margin: 0; }
.app-icon.big { width: 88px; height: 88px; flex: none; }
@media (min-width: 768px) { .app-icon.big { width: 112px; height: 112px; } }
.app-hero .sub { font: 600 1.15rem/1.5 var(--serif); margin: 4px 0 6px; }
.status-ink { display: inline-block; margin: 0; padding: 1px 12px; border: 1px solid var(--line); border-radius: 999px; font-size: .88rem; color: var(--ink-2); }

.shots-sec { padding-top: 32px; }
.shots-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.hint { color: var(--ink-2); font-size: .88rem; margin: 6px 0 0; }
.hint.row { display: flex; justify-content: space-between; gap: 12px; }
.shots {
  display: flex; gap: 18px; overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding: 0 16px;
  padding: 8px 16px 24px; margin: 0 auto; max-width: 1080px;
}
@media (min-width: 768px) { .shots { padding-left: 32px; padding-right: 32px; scroll-padding: 0 32px; } }
.shots figure { flex: none; width: min(60vw, 230px); margin: 0; scroll-snap-align: start; }
.shots .phone { width: 100%; border-radius: 26px; border-width: 6px; box-shadow: 0 10px 24px rgba(0,0,0,.18); }
.shots figcaption { font-size: .88rem; color: var(--ink-2); margin-top: 10px; line-height: 1.5; }

.feats { display: grid; gap: 0 40px; margin: 8px 0 18px; }
@media (min-width: 760px) { .feats { grid-template-columns: 1fr 1fr; } }
.feat { border-top: 1px solid var(--line); padding: 18px 0 8px; }
.feat p { margin: 0 0 10px; color: var(--ink-2); }
.links { list-style: none; padding: 0; margin: 0; }
.links li { border-top: 1px solid var(--line); }
.links li:last-child { border-bottom: 1px solid var(--line); }
.links a { display: block; padding: 14px 0; text-decoration: none; color: var(--ink); font-weight: 600; }
.links a:hover { color: var(--lacquer); }
@media (prefers-color-scheme: dark) { .links a:hover { color: var(--gold); } }

.dl { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-start; gap: 20px 64px; margin: 4px auto 8px; }
.dl .hint { margin-top: 10px; }
.qr { display: none; margin: 0; text-align: center; }
.qr svg { display: block; width: 132px; height: auto; border-radius: 10px; box-shadow: 0 0 0 1px var(--line); }
.qr figcaption { font-size: .85rem; color: var(--ink-2); margin-top: 8px; }
@media (min-width: 820px) { .qr { display: block; } }

/* ---------- 表单 ---------- */
.form { margin-top: 8px; }
.field { margin: 0 0 22px; padding: 0; border: 0; min-width: 0; }
.field > label, .field > legend { display: block; font-weight: 600; margin: 0 0 8px; padding: 0; }
input:not([type=radio]), select, textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--paper);
  border: 1.5px solid var(--line); border-radius: 10px; padding: 11px 13px;
}
@media (prefers-color-scheme: light) { input:not([type=radio]), select, textarea { background: #F8F9F6; } }
textarea { min-height: 180px; resize: vertical; line-height: 1.6; }
input:not([type=radio]):hover, select:hover, textarea:hover { border-color: var(--ink-2); }
.segs { display: flex; flex-wrap: wrap; gap: 8px; }
.seg { position: relative; }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg span { display: inline-block; padding: 7px 18px; border: 1.5px solid var(--line); border-radius: 999px; }
.seg input:checked + span { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.seg input:focus-visible + span { outline: 3px solid var(--gold); outline-offset: 2px; }
.error { background: var(--error-bg); border-left: 4px solid var(--lacquer); padding: 10px 14px; border-radius: 6px; margin: 0 0 20px; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

.prose h2 { font-size: 1.25rem; margin-top: 32px; }
.prose p { margin: 0 0 12px; }

/* ---------- 页脚 ---------- */
.foot { border-top: 1px solid var(--line); color: var(--ink-2); font-size: .9rem; }
.foot-in { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 24px; padding-top: 22px; padding-bottom: 28px; }
.foot p { margin: 0; }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 20px; }
.foot a { color: var(--ink-2); }