/* ==========================================================================
   TiTi — Design System  ·  All you need
   品牌色取自 logo：橙 #EFA12E + 深蓝 #1B3D57，浅暖白底
   所有可调参数都在 :root。改配色/字号只需要动这一段。
   ========================================================================== */

:root {
  /* --- 品牌色（可调） --- */
  --orange:      #EFA12E;
  --orange-deep: #D98914;
  --orange-soft: #FCF1DE;
  --orange-line: #F3D9A8;

  --navy:        #1B3D57;
  --navy-deep:   #12293C;
  --navy-soft:   #EAF0F4;

  /* --- 中性色 --- */
  --bg:       #FDFBF7;   /* 页面底 */
  --bg-alt:   #F7F3EC;   /* 交替区块 */
  --surface:  #FFFFFF;   /* 卡片 */
  --line:     #E7E0D4;
  --line-soft:#F0EAE0;

  --text:     #1B3D57;   /* 正文 = 深蓝 */
  --text-2:   #4E6A7E;
  --text-3:   #8A9AA6;

  /* --- 排版（可调） --- */
  --font-display: "Poppins", "Segoe UI", -apple-system, BlinkMacSystemFont,
                  "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body:    -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
                  "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;

  --step--1: clamp(0.80rem, 0.78rem + 0.1vw, 0.86rem);
  --step-0:  clamp(0.95rem, 0.92rem + 0.15vw, 1.02rem);
  --step-1:  clamp(1.1rem, 1.02rem + 0.35vw, 1.3rem);
  --step-2:  clamp(1.35rem, 1.2rem + 0.7vw, 1.85rem);
  --step-3:  clamp(1.85rem, 1.5rem + 1.6vw, 2.9rem);
  --step-4:  clamp(2.3rem, 1.6rem + 3.2vw, 4.2rem);

  /* --- 布局（可调） --- */
  --wrap:        1160px;
  --wrap-narrow: 800px;
  --gutter:      clamp(1.25rem, 5vw, 3.25rem);
  --radius:      14px;
  --radius-sm:   9px;
  --ease:        cubic-bezier(0.22, 1, 0.36, 1);
  --shadow:      0 1px 2px rgba(27,61,87,.05), 0 8px 24px -12px rgba(27,61,87,.16);
  --shadow-lg:   0 2px 6px rgba(27,61,87,.06), 0 24px 48px -24px rgba(27,61,87,.24);
}

/* ========================= Reset ========================= */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { max-width: 100%; }
img { display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 600; line-height: 1.2; letter-spacing: -0.015em; }
p  { margin: 0 0 1.05em; }
ul, ol { margin: 0 0 1.15em; padding-left: 1.2em; }
li { margin-bottom: 0.4em; }
strong { font-weight: 600; }

/* ===================== 三语切换机制 =====================
   每块文案有三份：[lang="en"] / [lang="ms"] / [lang="zh"]
   <html data-lang="xx"> 决定显示哪一份，site.js 负责切换与记忆。 */
[lang]:not(html) { display: none; }
html[data-lang="en"] [lang="en"],
html[data-lang="ms"] [lang="ms"],
html[data-lang="zh"] [lang="zh"] { display: revert; }

/* ========================= 版心 ========================= */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap--narrow { max-width: var(--wrap-narrow); }

/* ========================= 顶栏 ========================= */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(253, 251, 247, 0.88);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line-soft);
}
.nav__inner { display: flex; align-items: center; gap: 1.25rem; height: 72px; }

.brand { display: flex; align-items: center; gap: 0.65rem; margin-right: auto; }
.brand__mark { width: 44px; height: 44px; flex: none; display: flex; align-items: center; justify-content: center; }
.brand__mark img, .brand__mark svg { width: 100%; height: 100%; display: block; object-fit: contain; }
.brand__word {
  font-family: var(--font-display); font-weight: 700;
  font-size: 1.3rem; letter-spacing: -0.02em; color: var(--navy);
}
.brand__tag {
  font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--orange-deep); font-weight: 600; margin-left: 0.2rem;
}
/* 满版方形 logo（橙底），无需再加圆角框 */
.brand__mark--square { border-radius: 0; }
.brand__mark--square img { border-radius: 9px; }
@media (max-width: 600px) { .brand__tag { display: none; } }

.nav__links { display: flex; gap: 1.35rem; align-items: center; }
.nav__links > a {
  font-size: var(--step--1); font-weight: 500; color: var(--text-2);
  padding: 0.3rem 0; border-bottom: 2px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.nav__links > a:hover { color: var(--navy); }
.nav__links > a[aria-current="page"] { color: var(--navy); border-bottom-color: var(--orange); }

/* 语言切换 */
.langs {
  display: flex; align-items: center; gap: 2px; margin-left: 0.5rem;
  background: var(--bg-alt); border: 1px solid var(--line); border-radius: 999px; padding: 3px;
}
.langs button {
  appearance: none; background: none; border: 0; border-radius: 999px;
  padding: 0.32rem 0.7rem; font: inherit; font-size: 0.72rem; font-weight: 600;
  color: var(--text-3); cursor: pointer; white-space: nowrap;
  transition: background .25s var(--ease), color .25s var(--ease);
}
.langs button:hover { color: var(--navy); }
.langs button[aria-pressed="true"] { background: var(--navy); color: #fff; }

/* 移动端菜单 */
.nav__toggle {
  display: none; appearance: none; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  color: var(--navy); padding: 0.45rem 0.8rem; cursor: pointer;
  font: inherit; font-size: 0.78rem; font-weight: 600;
}
@media (max-width: 940px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: absolute; inset: 72px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--surface); border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); padding: 0.5rem var(--gutter) 1.25rem; display: none;
  }
  .nav__links.is-open { display: flex; }
  .nav__links > a { padding: 0.8rem 0; font-size: 0.95rem; border-bottom: 1px solid var(--line-soft); }
  .nav__links > a[aria-current="page"] { border-bottom-color: var(--line-soft); color: var(--orange-deep); }
  .langs { margin: 1rem 0 0; align-self: flex-start; }
}

/* ========================= Hero ========================= */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(3.5rem, 10vh, 6.5rem) 0 clamp(3rem, 8vh, 5.5rem);
  background:
    radial-gradient(60% 80% at 88% 8%, rgba(239,161,46,.20), transparent 68%),
    radial-gradient(52% 70% at 4% 92%, rgba(27,61,87,.07), transparent 70%),
    var(--bg);
}
.pill {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--orange-soft); border: 1px solid var(--orange-line);
  color: var(--orange-deep); border-radius: 999px;
  padding: 0.4rem 0.95rem; font-size: var(--step--1); font-weight: 600;
  margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: var(--step-4); max-width: 15ch; margin-bottom: 1.35rem;
  letter-spacing: -0.03em; line-height: 1.05;
}
.hero h1 em { font-style: normal; color: var(--orange-deep); }
.hero__lead { font-size: var(--step-1); color: var(--text-2); max-width: 50ch; }

/* ========================= 通用区块 ========================= */
.section { padding: clamp(3rem, 8vw, 5.5rem) 0; }
.section--alt { background: var(--bg-alt); }
.section--line { border-top: 1px solid var(--line-soft); }

.eyebrow {
  display: block; font-size: var(--step--1); font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--orange-deep); margin-bottom: 0.9rem;
}
.h2 { font-size: var(--step-3); max-width: 20ch; margin-bottom: 1.1rem; }
.h3 { font-size: var(--step-2); margin-bottom: 0.6rem; }
.lead { font-size: var(--step-1); color: var(--text-2); max-width: 58ch; }
.muted { color: var(--text-2); }
.small { font-size: var(--step--1); color: var(--text-3); }
.rule { height: 1px; background: var(--line-soft); border: 0; margin: 2.75rem 0; }

/* ========================= 网格与卡片 ========================= */
.grid { display: grid; gap: 1.1rem; }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 980px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } .grid--3 { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .grid--4, .grid--2 { grid-template-columns: 1fr; } }

.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: clamp(1.4rem, 2.6vw, 1.9rem);
  box-shadow: var(--shadow);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }
.card p { color: var(--text-2); font-size: var(--step--1); line-height: 1.7; margin: 0; }
/* ===== 图标 =====
   symbol 里只有路径，描边样式全由 .ic 控制（fill:none + currentColor 描边） */
.ic {
  width: 1.15em; height: 1.15em; flex: none;
  fill: none; stroke: currentColor;
  stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round;
  vertical-align: -0.18em;
}

.card__icon {
  width: 48px; height: 48px; border-radius: 13px; margin-bottom: 1.15rem;
  background: var(--orange-soft); color: var(--orange-deep);
  display: grid; place-items: center;
}
.card__icon .ic { width: 26px; height: 26px; stroke-width: 1.7; }
.card--navy .card__icon { background: rgba(255,255,255,.12); color: var(--orange); }

/* 清单前的小图标（替代项目符号） */
.ticklist { list-style: none; padding-left: 0; margin: 0; }
.ticklist li { display: flex; gap: 0.6rem; align-items: flex-start; margin-bottom: 0.55em; }
.ticklist .ic { color: var(--orange-deep); margin-top: 0.15em; width: 1.05em; height: 1.05em; }
.card--navy .ticklist .ic { color: var(--orange); }

/* 区块小标里的图标 */
.eyebrow .ic { width: 1.05em; height: 1.05em; vertical-align: -0.15em; margin-right: 0.35em; }
/* 步骤圆里换成图标 */
.step--ic { padding-left: 3.6rem; }
.step--ic::before { content: none; }
.step__ic {
  position: absolute; left: 0; top: 0;
  width: 2.5rem; height: 2.5rem; border-radius: 50%;
  background: var(--navy); color: var(--orange);
  display: grid; place-items: center;
}
.step__ic .ic { width: 22px; height: 22px; }
/* 按钮里的图标 */
.btn .ic { width: 1.05em; height: 1.05em; }
.card--navy { background: var(--navy); border-color: var(--navy); color: #fff; }
.card--navy h3 { color: #fff; }
.card--navy p { color: rgba(255,255,255,.78); }
.card--navy .card__icon { background: rgba(255,255,255,.12); color: var(--orange); }

/* 步骤条 */
.steps { counter-reset: s; display: grid; gap: 1.1rem; }
.step {
  position: relative; padding-left: 3.4rem; counter-increment: s;
}
.step::before {
  content: counter(s); position: absolute; left: 0; top: 0;
  width: 2.3rem; height: 2.3rem; border-radius: 50%;
  background: var(--navy); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: 0.9rem;
  font-family: var(--font-display);
}
.step h3 { font-size: 1.05rem; margin-bottom: 0.25rem; }
.step p { color: var(--text-2); font-size: var(--step--1); margin: 0; }

/* ========================= 按钮 ========================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.8rem 1.5rem; border-radius: 999px; border: 1px solid transparent;
  font-family: var(--font-display); font-size: var(--step--1); font-weight: 600;
  cursor: pointer; transition: all .3s var(--ease); text-align: center;
}
.btn--solid { background: var(--orange); color: var(--navy-deep); }
.btn--solid:hover { background: var(--orange-deep); color: #fff; }
.btn--navy { background: var(--navy); color: #fff; }
.btn--navy:hover { background: var(--navy-deep); }
.btn--ghost { border-color: var(--line); background: var(--surface); color: var(--navy); }
.btn--ghost:hover { border-color: var(--navy); }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }

/* ========================= 法律文档 ========================= */
.doc-head {
  padding: clamp(2.75rem, 7vh, 4.5rem) 0 clamp(1.75rem, 3.5vh, 2.5rem);
  background: var(--bg-alt); border-bottom: 1px solid var(--line);
}
.doc-head h1 { font-size: var(--step-3); margin-bottom: 0.8rem; }
.doc-head h1 > .ic { width: 0.92em; height: 0.92em; color: var(--orange-deep); margin-right: 0.55rem; vertical-align: 0; }
.doc { padding: clamp(2.25rem, 5vw, 3.5rem) 0 5rem; }

.doc h2 {
  font-size: var(--step-2); margin: 2.75rem 0 0.8rem;
  padding-top: 1.5rem; border-top: 1px solid var(--line);
}
.doc h2:first-of-type { margin-top: 0; border-top: 0; padding-top: 0; }
.doc h3 { font-size: 1.03rem; margin: 1.6rem 0 0.4rem; color: var(--navy); }
.doc h4 { font-size: 0.92rem; margin: 1.2rem 0 0.3rem; color: var(--orange-deep);
          text-transform: uppercase; letter-spacing: 0.08em; }
.doc p, .doc li { color: var(--text-2); }
.doc a { color: var(--orange-deep); font-weight: 500; border-bottom: 1px solid var(--orange-line); }
.doc a:hover { border-bottom-color: var(--orange-deep); }

/* 法律文件大分节 */
.legal-doc { scroll-margin-top: 90px; }
.legal-doc + .legal-doc { margin-top: 4rem; }
.legal-doc__head {
  background: var(--surface); border: 1px solid var(--line);
  border-left: 4px solid var(--orange); border-radius: var(--radius);
  padding: 1.5rem 1.75rem; margin-bottom: 2rem;
}
.legal-doc__head h2 {
  border: 0 !important; padding: 0 !important; margin: 0 0 0.5rem !important;
  font-size: var(--step-2);
}
.legal-doc__head h2 > .ic {
  width: 1.05em; height: 1.05em; color: var(--orange-deep);
  margin-right: 0.5rem; vertical-align: -0.12em;
}
.legal-doc__meta { font-size: var(--step--1); color: var(--text-3); margin: 0; }

/* 提示框 */
.callout {
  border: 1px solid var(--line); border-left: 4px solid var(--navy);
  background: var(--surface); border-radius: var(--radius);
  padding: 1.35rem 1.6rem; margin: 1.75rem 0; box-shadow: var(--shadow);
}
.callout p:last-child, .callout ul:last-child { margin-bottom: 0; }
.callout--warn { border-left-color: #D9534F; background: #FEF6F5; }
.callout--note { border-left-color: var(--orange); background: var(--orange-soft); border-color: var(--orange-line); }
.callout--note p, .callout--note li { color: #7A5410; }

/* 目录 */
.toc {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.5rem 1.75rem; margin-bottom: 2.75rem;
  box-shadow: var(--shadow);
}
.toc h2 {
  font-size: 0.72rem !important; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--text-3); margin: 0 0 0.9rem !important; padding: 0 !important; border: 0 !important;
  font-weight: 700;
}
.toc ol { margin: 0; padding-left: 1.2em; }
.toc.toc--2col ol { column-count: 2; column-gap: 2.5rem; }
.toc li { font-size: var(--step--1); margin-bottom: 0.35em; break-inside: avoid; }
.toc a { color: var(--text-2); border: 0; font-weight: 500; }
.toc a:hover { color: var(--orange-deep); }
@media (max-width: 640px) { .toc.toc--2col ol { column-count: 1; } }

/* 表格 */
.table-wrap {
  overflow-x: auto; margin: 1.5rem 0 1.9rem;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
}
table { width: 100%; border-collapse: collapse; font-size: var(--step--1); min-width: 520px; }
th, td { text-align: left; padding: 0.85rem 1.05rem; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
thead th, tr:first-child th { background: var(--bg-alt); color: var(--navy); font-weight: 700;
     font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.07em; }
td { color: var(--text-2); }
tr:last-child td { border-bottom: 0; }
td strong, th strong { color: var(--navy); }
.tick { color: var(--orange-deep); font-weight: 700; }
.dash { color: var(--text-3); }

/* ========================= 表单 ========================= */
.form { display: grid; gap: 1rem; margin-top: 1.75rem; max-width: 560px; }
.field { display: grid; gap: 0.4rem; }
.field label { font-size: 0.76rem; font-weight: 600; letter-spacing: 0.05em; color: var(--text-2); }
.field input, .field select, .field textarea {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-sm); color: var(--text);
  padding: 0.75rem 0.9rem; font: inherit; font-size: 0.93rem;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px var(--orange-soft);
}
.field textarea { min-height: 110px; resize: vertical; }
.check { display: flex; gap: 0.65rem; align-items: flex-start; font-size: var(--step--1); color: var(--text-2); }
.check input { margin-top: 0.3rem; accent-color: var(--orange-deep); flex: none; }

/* ========================= 页脚 ========================= */
.foot { background: var(--navy); color: rgba(255,255,255,.72); padding: clamp(2.75rem, 6vw, 4rem) 0 2rem; }
.foot .brand__word { color: #fff; }
.foot__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 2.25rem; margin-bottom: 2.5rem; }
@media (max-width: 900px) { .foot__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .foot__grid { grid-template-columns: 1fr; } }
.foot h4 { font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--orange); margin-bottom: 1rem; }
.foot ul { list-style: none; padding: 0; margin: 0; }
.foot li { margin-bottom: 0.55em; }
.foot a { font-size: var(--step--1); color: rgba(255,255,255,.72); transition: color .25s var(--ease); }
.foot a:hover { color: var(--orange); }
.foot__addr { font-size: var(--step--1); line-height: 1.8; color: rgba(255,255,255,.66); }
.foot__bottom {
  border-top: 1px solid rgba(255,255,255,.14); padding-top: 1.6rem;
  display: flex; flex-wrap: wrap; gap: 0.9rem; justify-content: space-between;
  font-size: 0.76rem; color: rgba(255,255,255,.55);
}
.foot__bottom a { font-size: 0.76rem; }

/* ========================= 杂项 ========================= */
.skip { position: absolute; left: -9999px; }
.skip:focus {
  left: var(--gutter); top: 0.6rem; z-index: 99;
  background: var(--orange); color: var(--navy-deep); padding: 0.6rem 1rem; border-radius: var(--radius-sm);
}
.reveal { opacity: 0; transform: translateY(16px); }
.reveal.is-in { opacity: 1; transform: none; transition: opacity .8s var(--ease), transform .8s var(--ease); }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.is-in { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}
@media print {
  .nav, .foot, .btn, .skip { display: none !important; }
  body { background: #fff; }
  .doc a { border: 0; color: inherit; }
}
