/* 三语输入法 官网样式。视觉沿用 pilafbigking.com 上 NearSignal 页面：深底、衬线大标题、圆角描边卡片、胶囊按钮。 */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Nunito:wght@400;600;700&family=Zen+Maru+Gothic:wght@400;500;700&display=swap');

:root {
  color-scheme: dark;
  --bg: #070c0d;
  --panel: rgba(255, 255, 255, .035);
  --panel-strong: rgba(255, 255, 255, .06);
  --line: rgba(255, 255, 255, .15);
  --line-strong: rgba(255, 255, 255, .35);
  --text: #ffffff;
  --text-2: rgba(255, 255, 255, .72);
  --text-3: rgba(255, 255, 255, .5);
  --accent: #7fd6c2;
  --accent-glow: rgba(64, 170, 150, .35);
  --font-sans: "Nunito", "PingFang SC", "Hiragino Sans", "Microsoft YaHei", system-ui, sans-serif;
  --font-serif: "Instrument Serif", ui-serif, Georgia, "Times New Roman", serif;
}
html:lang(ja) { --font-sans: "Zen Maru Gothic", "Nunito", "Hiragino Maru Gothic ProN", sans-serif; }
/* 中文标题不用衬线：Instrument Serif 没有汉字，回落到宋体会很尖。 */
html:lang(zh-CN) { --font-serif: "Nunito", "PingFang SC", "Microsoft YaHei", sans-serif; }
html:lang(ja) { --font-serif: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", sans-serif; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-underline-offset: 4px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--text); outline-offset: 3px; border-radius: 6px; }
img { max-width: 100%; display: block; }

/* 语言块：html[data-locale] 决定显示哪一种 */
[data-l] { display: none; }
html[data-locale="zh"] [data-l="zh"],
html[data-locale="ja"] [data-l="ja"],
html[data-locale="en"] [data-l="en"] { display: revert; }
html[data-locale="zh"] span[data-l="zh"],
html[data-locale="ja"] span[data-l="ja"],
html[data-locale="en"] span[data-l="en"] { display: inline; }

.wrap { max-width: 980px; margin: 0 auto; padding: 0 20px; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 32px 0; }
.brand { font-family: "Instrument Serif", Georgia, serif; font-size: 1.6rem; text-decoration: none; letter-spacing: .01em; }
.header-links { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .78rem; }

main { padding-top: 40px; padding-bottom: calc(7rem + env(safe-area-inset-bottom, 0px)); }
.eyebrow { margin: 0 0 20px; font-size: .72rem; font-weight: 700; letter-spacing: .18em; color: var(--text-3); text-transform: uppercase; }
h1, h2, h3 { font-family: var(--font-serif); font-weight: 400; margin: 0; line-height: 1.15; overflow-wrap: anywhere; }
h1 { font-size: clamp(2.6rem, 8vw, 4.75rem); }
h2 { font-size: clamp(1.8rem, 5vw, 2.6rem); }
h3 { font-size: clamp(1.4rem, 3.6vw, 1.9rem); }
html:lang(zh-CN) h1, html:lang(zh-CN) h2, html:lang(zh-CN) h3,
html:lang(ja) h1, html:lang(ja) h2, html:lang(ja) h3 { font-weight: 700; letter-spacing: .01em; }
.lead { margin-top: 28px; max-width: 760px; font-size: .95rem; line-height: 2; color: var(--text-2); }
.meta { margin-top: 18px; font-size: .85rem; color: var(--text-3); }
p { color: var(--text-2); font-size: .92rem; line-height: 2; max-width: 800px; }

/* 营销页首屏 */
.hero { display: grid; gap: 32px; margin-top: 48px; align-items: center; }
@media (min-width: 820px) { .hero { grid-template-columns: 1.1fr .9fr; } }
.hero-art {
  position: relative; min-height: 360px; border: 1px solid var(--line); border-radius: 32px; overflow: hidden;
  background: radial-gradient(circle at 62% 40%, var(--accent-glow), transparent 70%), var(--panel);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 22px; padding: 28px;
}
.hero-art img { width: 120px; height: 120px; border-radius: 27px; box-shadow: 0 25px 90px rgba(0,0,0,.45); }
.mock-kbd { width: min(320px, 100%); border-radius: 18px; border: 1px solid var(--line); background: rgba(10, 18, 18, .85); padding: 12px; font-size: .8rem; }
.mock-row { display: flex; gap: 8px; flex-wrap: wrap; padding: 6px 4px; border-bottom: 1px solid rgba(255,255,255,.08); color: var(--text-2); }
.mock-row:last-child { border-bottom: 0; color: var(--text); font-size: .95rem; }
.mock-tag { font-size: .62rem; letter-spacing: .12em; color: var(--accent); min-width: 22px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 32px; border: 1px solid var(--line-strong); border-radius: 999px;
  padding: 12px 22px; font-size: .74rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; text-decoration: none;
}
.pill:hover { background: rgba(255,255,255,.1); color: var(--text); }
.pill[aria-disabled="true"] { opacity: .6; pointer-events: none; }

.section { margin-top: 88px; border-top: 1px solid var(--line); padding-top: 44px; scroll-margin-top: 24px; }
.section-num { margin: 0 0 14px; font-size: .7rem; letter-spacing: .25em; color: var(--text-3); text-transform: uppercase; }
.grid { display: grid; gap: 16px; margin-top: 32px; }
@media (min-width: 720px) { .grid.two { grid-template-columns: 1fr 1fr; } }
@media (min-width: 720px) { .grid.three { grid-template-columns: repeat(3, 1fr); } }
.plan h3 small { font-family: system-ui, sans-serif; font-size: .8rem; font-weight: 400; color: var(--text-3); }
.plan .buy-btn { cursor: pointer; background: transparent; color: var(--text); margin-top: 24px; }
.plan .buy-btn:disabled { opacity: .5; cursor: not-allowed; }
.card { border: 1px solid var(--line); background: var(--panel); border-radius: 24px; padding: 28px; }
.card .num { margin: 0 0 28px; font-size: .7rem; letter-spacing: .2em; color: var(--text-3); }
.card h3 { margin-bottom: 12px; }
.card p { margin: 0; font-size: .88rem; line-height: 1.9; }
.card ul { margin: 12px 0 0; padding-left: 1.1em; color: var(--text-2); font-size: .88rem; line-height: 1.9; }
.notes { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 16px; }
.notes li { border-left: 1px solid var(--line-strong); padding-left: 22px; color: var(--text-2); font-size: .9rem; line-height: 1.9; }

/* 法律文档 */
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 36px; }
.toc a { border: 1px solid rgba(255,255,255,.2); border-radius: 999px; padding: 7px 13px; font-size: .74rem; color: var(--text-2); text-decoration: none; }
.toc a:hover { border-color: rgba(255,255,255,.6); color: var(--text); }
.doc-section { margin-top: 48px; border-top: 1px solid var(--line); padding-top: 32px; scroll-margin-top: 24px; }
.doc-section .num { margin: 0 0 14px; font-size: .68rem; letter-spacing: .2em; color: var(--text-3); }
.doc-section p, .doc-section li { font-size: .9rem; line-height: 2; color: var(--text-2); }
.doc-section ul { padding-left: 1.2em; max-width: 800px; }
/* 法律文档里的表格（隐私政策 §4 的数据清单、§7 的出境清单）：窄屏可横向滚动，不挤压列宽。 */
.doc-table-wrap { margin: 10px 0 22px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.doc-table { border-collapse: collapse; width: 100%; min-width: 620px; font-size: .84rem; }
.doc-table th, .doc-table td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; vertical-align: top; color: var(--text-2); line-height: 1.8; }
.doc-table th { color: var(--text); font-weight: 600; background: var(--panel-strong); white-space: nowrap; }
.doc-table code { word-break: break-all; }
.contact-box { margin-top: 56px; border: 1px solid rgba(255,255,255,.2); background: rgba(255,255,255,.04); border-radius: 18px; padding: 24px; }
.contact-box .label { margin: 0; font-size: .78rem; color: var(--text-3); }
.contact-box a.mail { display: inline-block; margin-top: 10px; font-size: 1.05rem; word-break: break-all; }
.contact-box .links { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: .8rem; }

.site-footer { border-top: 1px solid var(--line); margin-top: 72px; padding: 28px 0 0; font-size: .78rem; color: var(--text-3); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 14px; }
.site-footer p { font-size: .76rem; line-height: 1.8; color: var(--text-3); margin: 6px 0; }

/* 语言切换（与 NearSignal 一致：右下角胶囊） */
.lang-switch {
  position: fixed; z-index: 100; right: calc(1rem + env(safe-area-inset-right, 0px)); bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
  display: flex; gap: 4px; padding: 6px; border-radius: 999px; border: 1px solid rgba(255,255,255,.25);
  background: rgba(11, 18, 18, .95); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); box-shadow: 0 10px 30px rgba(0,0,0,.4);
}
.lang-switch button {
  min-width: 44px; min-height: 44px; border: 0; border-radius: 999px; padding: 0 12px; background: transparent;
  color: rgba(255,255,255,.8); font: 700 .7rem/1 var(--font-sans); cursor: pointer;
}
.lang-switch button:hover { background: rgba(255,255,255,.15); }
.lang-switch button[aria-pressed="true"] { background: #fff; color: #071010; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }