/* =========================================================
   华齿之旅 China Dental Travel — dentaltravelchina.com
   设计语言：「墨与金」— 墨蓝底 / 香槟金线 / 宋体标题 / 大留白
   ========================================================= */

:root {
    /* 色彩 */
    --ink: #0d1b26;
    --ink-2: #14293a;
    --ink-3: #1e3c50;
    --slate: #4a5f70;
    --muted: #6f8395;
    --line: #e3ddd2;
    --line-soft: #efeae1;
    --paper: #fbf9f5;
    --paper-2: #f5f1e9;
    --white: #ffffff;
    --gold: #b08a48;
    --gold-light: #cfae72;
    --gold-deep: #8a6a32;
    --gold-grad: linear-gradient(135deg, #cfae72 0%, #b08a48 52%, #8a6a32 100%);
    --jade: #2f6f6a;

    /* 字体 */
    --font-serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif SC", "SimSun", "宋体", Georgia, serif;
    --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;

    /* 尺寸 */
    --wrap: 1200px;
    --wrap-narrow: 880px;
    --header-h: 78px;
    --radius: 4px;
    --shadow-sm: 0 2px 10px rgba(13, 27, 38, .05);
    --shadow-md: 0 14px 40px rgba(13, 27, 38, .1);
    --shadow-lg: 0 26px 70px rgba(13, 27, 38, .16);
    --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.9;
    color: var(--ink-3);
    background: var(--paper);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .3s var(--ease); }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 600; color: var(--ink); line-height: 1.35; }
strong { color: var(--ink); font-weight: 600; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
.wrap-narrow { max-width: var(--wrap-narrow); }
.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- 顶部速联条 ---------- */
.topbar {
    background: var(--ink);
    color: rgba(255, 255, 255, .72);
    font-size: 13px;
    letter-spacing: .04em;
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; height: 40px; }
.topbar a { color: rgba(255, 255, 255, .82); }
.topbar a:hover { color: var(--gold-light); }
.topbar-left { display: flex; align-items: center; gap: 10px; }
.topbar-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--gold); flex: none; }
.topbar-right { display: flex; align-items: center; gap: 22px; }

/* ---------- 页头 ---------- */
.site-header {
    position: sticky; top: 0; z-index: 900; /* mobile-nav 以此为定位父级 */
    background: rgba(251, 249, 245, .96);
    border-bottom: 1px solid var(--line-soft);
    transition: box-shadow .35s var(--ease), background .35s var(--ease);
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(13, 27, 38, .07); background: rgba(251, 249, 245, .99); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 24px; }

/* Logo */
.logo a { display: flex; align-items: center; gap: 12px; }
.logo-mark { width: 40px; height: 40px; flex: none; }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-zh {
    font-family: var(--font-serif); font-size: 21px; font-weight: 600;
    color: var(--ink); letter-spacing: .16em;
}
.logo-en {
    font-size: 10px; letter-spacing: .22em; text-transform: uppercase;
    color: var(--gold); font-weight: 600; margin-top: 2px;
}
.logo a:hover .logo-zh { color: var(--gold-deep); }

/* 主导航 */
.nav { display: flex; align-items: center; gap: 4px; }
.nav > li { position: relative; }
.nav > li > a {
    display: block; padding: 10px 14px; font-size: 15px;
    color: var(--ink-3); letter-spacing: .05em; position: relative;
}
.nav > li > a::before {
    content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px;
    height: 1px; background: var(--gold); transform: scaleX(0);
    transform-origin: left; transition: transform .35s var(--ease);
}
.nav > li > a:hover, .nav > li > a[aria-current="page"] { color: var(--ink); }
.nav > li > a:hover::before, .nav > li > a[aria-current="page"]::before { transform: scaleX(1); }

/* 下拉 */
.has-sub > a::after {
    content: ""; display: inline-block; width: 5px; height: 5px; margin-left: 7px;
    border-right: 1px solid currentColor; border-bottom: 1px solid currentColor;
    transform: translateY(-2px) rotate(45deg); opacity: .5;
}
.sub {
    position: absolute; top: 100%; left: 0; min-width: 220px; padding: 10px 0;
    background: var(--white); border: 1px solid var(--line-soft);
    box-shadow: var(--shadow-md); border-top: 2px solid var(--gold);
    opacity: 0; visibility: hidden; transform: translateY(8px);
    transition: all .28s var(--ease);
}
.has-sub:hover .sub, .has-sub:focus-within .sub { opacity: 1; visibility: visible; transform: translateY(0); }
.sub a { display: block; padding: 9px 20px; font-size: 14.5px; color: var(--slate); }
.sub a:hover { color: var(--gold-deep); background: var(--paper-2); }

.header-cta { display: flex; align-items: center; gap: 14px; }

/* 汉堡 */
.burger {
    display: none; width: 44px; height: 44px; background: none; border: 0;
    cursor: pointer; position: relative;
}
.burger span {
    position: absolute; left: 11px; width: 22px; height: 1.5px; background: var(--ink);
    transition: all .3s var(--ease);
}
.burger span:nth-child(1) { top: 16px; }
.burger span:nth-child(2) { top: 22px; }
.burger span:nth-child(3) { top: 28px; }
.burger.open span:nth-child(1) { top: 22px; transform: rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { top: 22px; transform: rotate(-45deg); }

/* 移动端抽屉 —— 绝对定位在 sticky header 之下，随 header 移动，不需要计算偏移 */
.mobile-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    max-height: 0; overflow: hidden;
    background: var(--white); border-top: 1px solid var(--line-soft);
    box-shadow: var(--shadow-lg); z-index: 890;
    transition: max-height .4s var(--ease);
}
.mobile-nav.open { max-height: calc(100dvh - var(--header-h)); overflow-y: auto; }
.mobile-nav ul { padding: 8px 0 24px; }
.mobile-nav a {
    display: block; padding: 14px 28px; font-size: 16px;
    border-bottom: 1px solid var(--line-soft); color: var(--ink-3);
}
.mobile-nav .sub-item a { padding-left: 48px; font-size: 15px; color: var(--slate); }
.mobile-nav .m-cta { padding: 20px 28px 0; }
.mobile-nav .m-cta .btn { width: 100%; justify-content: center; }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 9px;
    padding: 14px 30px; font-size: 15px; letter-spacing: .09em; font-weight: 500;
    border: 1px solid transparent; border-radius: var(--radius); cursor: pointer;
    transition: all .35s var(--ease); white-space: nowrap; text-align: center;
}
.btn-gold { background: var(--gold-grad); color: #fff; box-shadow: 0 6px 20px rgba(176, 138, 72, .28); }
.btn-gold:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 12px 30px rgba(176, 138, 72, .38); }
.btn-ink { background: var(--ink); color: #fff; }
.btn-ink:hover { background: var(--ink-2); color: #fff; transform: translateY(-2px); }
.btn-line { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-line:hover { border-color: var(--gold); color: var(--gold-deep); }
.btn-ghost { border-color: rgba(255, 255, 255, .42); color: #fff; background: transparent; }
.btn-ghost:hover { border-color: #fff; background: rgba(255, 255, 255, .1); color: #fff; }
.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn-lg { padding: 17px 40px; font-size: 16px; }

/* ---------- 区块通用 ---------- */
.section { padding: 104px 0; }
.section-sm { padding: 72px 0; }
.section-paper { background: var(--paper-2); }
.section-white { background: var(--white); }
.section-ink { background: var(--ink); color: rgba(255, 255, 255, .78); }
.section-ink h2, .section-ink h3, .section-ink h4 { color: #fff; }

.eyebrow {
    display: inline-flex; align-items: center; gap: 10px;
    font-size: 12px; letter-spacing: .3em; text-transform: uppercase;
    color: var(--gold); font-weight: 600; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--gold); }
.section-head { max-width: 760px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .eyebrow::after { content: ""; width: 26px; height: 1px; background: var(--gold); }
.section-head h2 { font-size: clamp(28px, 3.6vw, 41px); letter-spacing: .04em; }
.section-head p { margin-top: 20px; color: var(--muted); font-size: 16.5px; }
.section-ink .section-head p { color: rgba(255, 255, 255, .62); }

.lead { font-size: 18px; line-height: 2; color: var(--slate); }

/* ---------- Hero（首页） ---------- */
.hero {
    position: relative; min-height: 86vh; display: flex; align-items: center;
    background: var(--ink); overflow: hidden; padding: 96px 0 72px;
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .5; }
.hero-bg::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(105deg, rgba(9, 18, 26, .95) 0%, rgba(11, 24, 34, .82) 42%, rgba(13, 32, 46, .55) 100%);
}
.hero-inner { position: relative; z-index: 2; max-width: 760px; }
.hero .eyebrow { color: var(--gold-light); }
.hero .eyebrow::before { background: var(--gold-light); }
.hero h1 {
    color: #fff; font-size: clamp(34px, 5.4vw, 62px); line-height: 1.28;
    letter-spacing: .04em; margin-bottom: 26px;
}
.hero h1 em { font-style: normal; color: var(--gold-light); }
.hero p {
    color: rgba(255, 255, 255, .8); font-size: clamp(15.5px, 1.6vw, 18px);
    line-height: 2.05; max-width: 620px; margin-bottom: 38px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-note {
    margin-top: 30px; font-size: 13.5px; color: rgba(255, 255, 255, .5); letter-spacing: .04em;
}

/* 统计条 */
.stats-bar { position: relative; z-index: 2; background: #11222f; border-top: 1px solid rgba(255, 255, 255, .1); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 34px 24px; text-align: center; border-left: 1px solid rgba(255, 255, 255, .1); }
.stat:first-child { border-left: 0; }
.stat b {
    display: block; font-family: var(--font-serif); font-size: 34px;
    color: var(--gold-light); font-weight: 600; letter-spacing: .02em;
}
.stat span { display: block; margin-top: 6px; font-size: 13.5px; color: rgba(255, 255, 255, .62); letter-spacing: .1em; }

/* ---------- 内页页头 ---------- */
.page-hero {
    position: relative; background: var(--ink); color: #fff;
    padding: 92px 0 84px; overflow: hidden; text-align: center;
}
.page-hero::before {
    content: ""; position: absolute; inset: 0;
    background:
        radial-gradient(700px 320px at 50% -10%, rgba(176, 138, 72, .22), transparent 70%),
        linear-gradient(180deg, #0d1b26 0%, #11242f 100%);
}
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero .eyebrow { color: var(--gold-light); justify-content: center; }
.page-hero .eyebrow::before, .page-hero .eyebrow::after { content: ""; width: 26px; height: 1px; background: var(--gold-light); }
.page-hero h1 { color: #fff; font-size: clamp(29px, 4.4vw, 47px); letter-spacing: .05em; }
.page-hero p { margin: 20px auto 0; max-width: 660px; color: rgba(255, 255, 255, .7); font-size: 16.5px; }

/* 面包屑 */
.crumbs { background: var(--white); border-bottom: 1px solid var(--line-soft); font-size: 13.5px; color: var(--muted); }
.crumbs .wrap { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; height: 52px; }
.crumbs a:hover { color: var(--gold-deep); }
.crumbs span[aria-current] { color: var(--ink); }
.crumbs .sep { opacity: .45; }

/* ---------- 网格 ---------- */
.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 卡片 ---------- */
.card {
    position: relative; background: var(--white); border: 1px solid var(--line-soft);
    padding: 40px 34px; transition: all .4s var(--ease);
}
.card::before {
    content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 2px;
    background: var(--gold-grad); transform: scaleX(0); transform-origin: left;
    transition: transform .45s var(--ease);
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: transparent; }
.card:hover::before { transform: scaleX(1); }
.card-icon { width: 48px; height: 48px; margin-bottom: 24px; color: var(--gold); }
.card h3 { font-size: 21px; margin-bottom: 14px; letter-spacing: .03em; }
.card p { color: var(--muted); font-size: 15.5px; }
.card .more {
    display: inline-flex; align-items: center; gap: 8px; margin-top: 22px;
    font-size: 14px; color: var(--gold-deep); letter-spacing: .08em;
}
.card .more::after { content: "→"; transition: transform .3s var(--ease); }
.card:hover .more::after { transform: translateX(5px); }

/* 编号卡 */
.num-card { position: relative; padding-top: 46px; }
.num-card .num {
    position: absolute; top: 26px; right: 30px; font-family: var(--font-serif);
    font-size: 46px; line-height: 1; color: var(--line); font-weight: 600;
}

/* ---------- 图文分栏 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 66px; align-items: center; }
.split.reverse .split-media { order: 2; }
.split-media { position: relative; }
.split-media img { width: 100%; height: 100%; object-fit: cover; }
.split-media .frame {
    position: absolute; inset: 18px -18px -18px 18px; border: 1px solid var(--gold);
    pointer-events: none;
}
.split-media .duotone { position: relative; }
.split-body h2 { font-size: clamp(26px, 3.2vw, 37px); margin-bottom: 22px; letter-spacing: .04em; }
.split-body p { color: var(--slate); margin-bottom: 18px; }

/* ---------- 图片墨调处理 ---------- */
.duotone { position: relative; overflow: hidden; background: var(--ink); }
.duotone img {
    width: 100%; height: 100%; object-fit: cover;
    filter: grayscale(.55) contrast(1.06) brightness(.92);
    transition: filter .6s var(--ease), transform .8s var(--ease);
}
.duotone::after {
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background: linear-gradient(180deg, rgba(13, 27, 38, .1) 0%, rgba(13, 27, 38, .72) 100%);
    transition: opacity .5s var(--ease);
}
.duotone:hover img { filter: grayscale(0) contrast(1) brightness(1); transform: scale(1.05); }

/* ---------- 城市卡 ---------- */
.city-card { position: relative; display: block; height: 340px; overflow: hidden; }
.city-card .city-body {
    position: absolute; left: 0; right: 0; bottom: 0; z-index: 3;
    padding: 30px 28px; color: #fff;
}
.city-card .city-body h3 { color: #fff; font-size: 24px; letter-spacing: .1em; margin-bottom: 6px; }
.city-card .city-body span { font-size: 13px; letter-spacing: .2em; color: var(--gold-light); text-transform: uppercase; }
.city-card .city-body p { margin-top: 12px; font-size: 14.5px; color: rgba(255, 255, 255, .78); line-height: 1.8; }
.city-card::before {
    content: ""; position: absolute; inset: 14px; border: 1px solid rgba(255, 255, 255, .22);
    z-index: 4; pointer-events: none; opacity: 0; transition: opacity .45s var(--ease);
}
.city-card:hover::before { opacity: 1; }

/* ---------- 流程时间轴 ---------- */
.timeline { position: relative; padding-left: 0; }
.timeline::before {
    content: ""; position: absolute; left: 27px; top: 12px; bottom: 12px;
    width: 1px; background: linear-gradient(180deg, var(--gold) 0%, var(--line) 100%);
}
.tl-item { position: relative; padding: 0 0 46px 84px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-num {
    position: absolute; left: 0; top: 0; width: 55px; height: 55px; border-radius: 50%;
    background: var(--white); border: 1px solid var(--gold); color: var(--gold-deep);
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-serif); font-size: 19px; font-weight: 600; z-index: 2;
}
.tl-item h3 { font-size: 20px; margin-bottom: 10px; }
.tl-item p { color: var(--muted); font-size: 15.5px; }
.section-ink .timeline::before { background: linear-gradient(180deg, var(--gold) 0%, rgba(255, 255, 255, .12) 100%); }
.section-ink .tl-num { background: var(--ink); }
.section-ink .tl-item p { color: rgba(255, 255, 255, .62); }

/* ---------- 对比 / 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line-soft); background: var(--white); }
table.data { width: 100%; border-collapse: collapse; min-width: 640px; font-size: 15px; }
table.data caption { caption-side: bottom; padding: 16px 20px; font-size: 13px; color: var(--muted); text-align: left; }
table.data th, table.data td { padding: 16px 20px; text-align: left; border-bottom: 1px solid var(--line-soft); }
table.data thead th {
    background: var(--ink); color: #fff; font-family: var(--font-serif);
    font-weight: 600; letter-spacing: .08em; font-size: 15px; white-space: nowrap;
}
table.data tbody tr:nth-child(even) { background: var(--paper); }
table.data tbody tr:hover { background: #fdfaf3; }
table.data td.hi { color: var(--gold-deep); font-weight: 600; }
table.data td:first-child { color: var(--ink); font-weight: 500; }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
    width: 100%; background: none; border: 0; cursor: pointer; text-align: left;
    display: flex; align-items: flex-start; justify-content: space-between; gap: 24px;
    padding: 26px 0; font-family: var(--font-serif); font-size: 18px;
    color: var(--ink); letter-spacing: .02em; line-height: 1.6;
}
.faq-q .ic { flex: none; width: 22px; height: 22px; position: relative; margin-top: 6px; }
.faq-q .ic::before, .faq-q .ic::after {
    content: ""; position: absolute; background: var(--gold); transition: transform .35s var(--ease);
}
.faq-q .ic::before { left: 0; top: 10px; width: 22px; height: 1.5px; }
.faq-q .ic::after { left: 10px; top: 0; width: 1.5px; height: 22px; }
.faq-item.open .faq-q .ic::after { transform: rotate(90deg); opacity: 0; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .45s var(--ease); }
.faq-a-inner { padding: 0 46px 28px 0; color: var(--slate); font-size: 15.5px; }
.faq-a-inner p + p { margin-top: 14px; }

/* ---------- 清单 ---------- */
.ticks li {
    position: relative; padding-left: 30px; margin-bottom: 14px;
    color: var(--slate); font-size: 15.5px;
}
.ticks li::before {
    content: ""; position: absolute; left: 2px; top: 11px; width: 12px; height: 6px;
    border-left: 1.5px solid var(--gold); border-bottom: 1.5px solid var(--gold);
    transform: rotate(-45deg);
}
.section-ink .ticks li { color: rgba(255, 255, 255, .74); }

.dashes li { position: relative; padding-left: 22px; margin-bottom: 12px; color: var(--slate); font-size: 15.5px; }
.dashes li::before { content: ""; position: absolute; left: 0; top: 15px; width: 10px; height: 1px; background: var(--gold); }

/* ---------- 引言 / 提示块 ---------- */
.note {
    border-left: 2px solid var(--gold); background: var(--paper-2);
    padding: 24px 28px; color: var(--slate); font-size: 15px; line-height: 1.9;
}
.note > strong:first-of-type { display: block; margin-bottom: 6px; color: var(--ink); font-family: var(--font-serif); }
.note.warn { border-left-color: #b4542f; background: #fdf4f0; }

/* ---------- CTA 条 ---------- */
.cta-band { position: relative; background: var(--ink); color: #fff; padding: 84px 0; overflow: hidden; text-align: center; }
.cta-band::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(760px 300px at 50% 120%, rgba(176, 138, 72, .3), transparent 70%);
}
.cta-band .wrap { position: relative; z-index: 2; }
.cta-band h2 { color: #fff; font-size: clamp(26px, 3.4vw, 39px); letter-spacing: .05em; margin-bottom: 18px; }
.cta-band p { color: rgba(255, 255, 255, .7); max-width: 620px; margin: 0 auto 34px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- 表单 ---------- */
.form-card { background: var(--white); border: 1px solid var(--line-soft); padding: 46px 44px; box-shadow: var(--shadow-sm); }
.fieldset { border: 0; margin-bottom: 44px; }
.fieldset:last-of-type { margin-bottom: 28px; }
.fieldset > legend {
    display: flex; align-items: baseline; gap: 14px; width: 100%;
    padding-bottom: 14px; margin-bottom: 26px; border-bottom: 1px solid var(--line);
    font-family: var(--font-serif); font-size: 20px; color: var(--ink); letter-spacing: .04em;
}
.fieldset > legend .lg-num {
    font-size: 13px; letter-spacing: .18em; color: var(--gold); font-weight: 700;
    font-family: var(--font-sans);
}
.legend-hint { display: block; margin: -14px 0 24px; font-size: 13.5px; color: var(--muted); }

.field { margin-bottom: 20px; }
.field > label, .field > .flabel {
    display: block; margin-bottom: 8px; font-size: 14px; color: var(--ink);
    letter-spacing: .04em; font-weight: 500;
}
/* 选项胶囊即使作为 .field 的直接子元素也必须保持 inline-flex */
.field > label.choice { display: inline-flex; margin-bottom: 0; font-weight: 400; }
.field .req { color: #b4542f; margin-left: 3px; }
.field .hint { display: block; margin-top: 6px; font-size: 12.5px; color: var(--muted); line-height: 1.7; }
.field input[type="text"], .field input[type="tel"], .field input[type="email"],
.field input[type="number"], .field input[type="date"], .field select, .field textarea {
    width: 100%; padding: 13px 15px; background: var(--paper);
    border: 1px solid var(--line); border-radius: var(--radius);
    font-size: 15px; color: var(--ink); transition: all .3s var(--ease);
}
.field textarea { min-height: 120px; resize: vertical; line-height: 1.8; }
.field input:focus, .field select:focus, .field textarea:focus {
    outline: 0; border-color: var(--gold); background: var(--white);
    box-shadow: 0 0 0 3px rgba(176, 138, 72, .12);
}
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) calc(50% - 2px), calc(100% - 15px) calc(50% - 2px); background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; padding-right: 40px; }

.row { display: grid; gap: 20px; }
.row-2 { grid-template-columns: repeat(2, 1fr); }
.row-3 { grid-template-columns: repeat(3, 1fr); }

/* 选项组 */
.choices { display: flex; flex-wrap: wrap; gap: 10px; }
.choice {
    position: relative; display: inline-flex; align-items: center; gap: 9px;
    padding: 10px 17px; border: 1px solid var(--line); border-radius: 40px;
    background: var(--paper); font-size: 14.5px; color: var(--slate);
    cursor: pointer; transition: all .28s var(--ease); user-select: none;
}
.choice input { position: absolute; opacity: 0; width: 0; height: 0; }
.choice .box {
    width: 15px; height: 15px; flex: none; border: 1px solid var(--muted);
    border-radius: 3px; position: relative; transition: all .25s var(--ease);
}
.choice input[type="radio"] ~ .box { border-radius: 50%; }
.choice .box::after {
    content: ""; position: absolute; left: 4px; top: 1px; width: 5px; height: 9px;
    border-right: 1.5px solid #fff; border-bottom: 1.5px solid #fff;
    transform: rotate(45deg) scale(0); transition: transform .25s var(--ease);
}
.choice:hover { border-color: var(--gold-light); color: var(--ink); }
.choice input:checked ~ .box { background: var(--gold); border-color: var(--gold); }
.choice input:checked ~ .box::after { transform: rotate(45deg) scale(1); }
.choice:has(input:checked) { border-color: var(--gold); background: #fdf8f0; color: var(--ink); }
.choice input:focus-visible ~ .box { box-shadow: 0 0 0 3px rgba(176, 138, 72, .25); }

.form-actions { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; padding-top: 8px; }
.form-actions .fine { font-size: 13px; color: var(--muted); }

/* 联系表单（短） */
.contact-form .field:last-of-type { margin-bottom: 24px; }

/* ---------- 联系信息块 ---------- */
.info-item { display: flex; gap: 18px; padding: 24px 0; border-bottom: 1px solid var(--line-soft); }
.info-item:last-child { border-bottom: 0; }
.info-item .ic { width: 26px; height: 26px; flex: none; color: var(--gold); margin-top: 4px; }
.info-item h3 { font-size: 16px; margin-bottom: 4px; }
.info-item p, .info-item a { color: var(--slate); font-size: 15.5px; }
.info-item a:hover { color: var(--gold-deep); }

/* ---------- 页脚 ---------- */
footer.site-footer { background: var(--ink); color: rgba(255, 255, 255, .68); padding: 78px 0 0; margin-top: 0; }
.footer-content { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 46px; padding-bottom: 52px; }
.footer-section h3 {
    color: #fff; font-size: 17px; margin-bottom: 20px; letter-spacing: .1em;
    position: relative; padding-bottom: 14px;
}
.footer-section h3::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 1px; background: var(--gold); }
.footer-section p, .footer-section a { color: rgba(255, 255, 255, .62); font-size: 14.5px; line-height: 2.1; }
.footer-section a:hover { color: var(--gold-light); }
.footer-section li { margin-bottom: 2px; }
.footer-brand .logo-zh { color: #fff; }
.footer-brand .fb-desc { margin-top: 18px; max-width: 320px; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1); padding: 26px 0 34px;
    text-align: center; color: rgba(255, 255, 255, .45); font-size: 13.5px;
}
.footer-bottom p { margin-bottom: 6px; }
.footer-partner { margin-top: 14px; font-size: 13px; color: rgba(255, 255, 255, .5); }
.footer-partner a { color: var(--gold-light); }
.footer-partner a:hover { color: #fff; }
.footer-legal { margin-top: 12px; font-size: 12.5px; color: rgba(255, 255, 255, .34); line-height: 1.9; }

/* ---------- 悬浮联系 ---------- */
.float-call {
    position: fixed; right: 22px; bottom: 22px; z-index: 800;
    display: none; align-items: center; gap: 10px;
    padding: 13px 22px; border-radius: 40px; background: var(--gold-grad);
    color: #fff; font-size: 14.5px; letter-spacing: .05em;
    box-shadow: 0 10px 30px rgba(176, 138, 72, .4);
}
.float-call:hover { color: #fff; transform: translateY(-2px); }

/* ---------- 滚动淡入 ---------- */
/* 淡入只在 <html class="js"> 时生效——关闭 JavaScript 时内容照常可见、可抓取 */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition-duration: .01ms !important; }
    .js .reveal { opacity: 1; transform: none; }
    html { scroll-behavior: auto; }
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1080px) {
    .footer-content { grid-template-columns: 1fr 1fr; gap: 40px; }
    .split { gap: 44px; }
}

@media (max-width: 980px) {
    .nav, .header-cta .btn { display: none; }
    .burger { display: block; }
    .mobile-nav { display: block; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat:nth-child(odd) { border-left: 0; }
    .stat:nth-child(n+3) { border-top: 1px solid rgba(255, 255, 255, .1); }
    .split { grid-template-columns: 1fr; gap: 36px; }
    .split.reverse .split-media { order: 0; }
    .split-media .frame { display: none; }
    .section { padding: 78px 0; }
}

@media (max-width: 760px) {
    .wrap { padding: 0 20px; }
    .topbar .wrap { height: auto; padding: 9px 20px; flex-direction: column; gap: 4px; font-size: 12.5px; }
    .topbar-right { gap: 16px; }
        .grid, .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; }
    .row-2, .row-3 { grid-template-columns: 1fr; }
    .hero { min-height: auto; padding: 72px 0 56px; }
    .hero-actions .btn { flex: 1 1 100%; }
    .section { padding: 62px 0; }
    .section-head { margin-bottom: 38px; }
    .card { padding: 32px 26px; }
    .form-card { padding: 30px 22px; }
    .fieldset > legend { font-size: 18px; flex-wrap: wrap; gap: 8px; }
    .tl-item { padding-left: 66px; padding-bottom: 36px; }
    .tl-num { width: 46px; height: 46px; font-size: 17px; }
    .timeline::before { left: 23px; }
    .page-hero { padding: 62px 0 56px; }
    .float-call { display: inline-flex; right: 14px; bottom: 14px; padding: 12px 18px; font-size: 14px; }
    .city-card { height: 280px; }
    .footer-content { grid-template-columns: 1fr; gap: 34px; }
    body { padding-bottom: 0; }
}

@media (max-width: 420px) {
    .stats-grid { grid-template-columns: 1fr; }
    .stat { border-left: 0; border-top: 1px solid rgba(255, 255, 255, .1); }
    .stat:first-child { border-top: 0; }
}

/* ---------- 打印 ---------- */
@media print {
    .site-header, .topbar, .mobile-nav, .float-call, .cta-band, footer.site-footer { display: none; }
    body { background: #fff; color: #000; }
    .form-card { border: 0; padding: 0; box-shadow: none; }
}