/* =========================================================
   武汉天天游国际旅行社有限公司 — 企业官网样式
   风格：简约 · 大气 · 专业
   ========================================================= */

:root {
  /* 主色：绿水青山 · 碧海蓝天 */
  --ink: #0d3b39;           /* 深青墨绿，沉稳而不压抑 */
  --ink-soft: #1d5a54;
  --primary: #1aa091;       /* 青山绿，品牌主色 */
  --primary-light: #3bb9a9;
  --accent: #2e9bd6;        /* 碧海蓝天之蓝 */
  --accent-soft: #d6ecf8;
  --bg: #f4faf8;            /* 清新薄荷白 */
  --bg-alt: #e9f5f1;        /* 浅薄荷 */
  --card: #ffffff;
  --text: #27403d;
  --text-soft: #5e7873;
  --line: #dcebe7;
  --shadow: 0 18px 50px -20px rgba(13, 59, 57, .22);
  --shadow-sm: 0 8px 24px -12px rgba(13, 59, 57, .18);
  --radius: 16px;
  --radius-sm: 10px;
  --maxw: 1180px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(244, 250, 248, .82);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.brand .logo {
  width: 54px; height: 54px; border-radius: 13px;
  object-fit: contain;
  background: #fff;
  display: grid; place-items: center;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.brand .name { font-size: 17px; color: var(--ink); letter-spacing: .5px; line-height: 1.25; }
.brand .name small { display: block; font-size: 9.5px; font-weight: 600; color: var(--text-soft); letter-spacing: .5px; margin-top: 2px; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  position: relative; padding: 10px 16px; border-radius: 999px;
  color: var(--text-soft); font-size: 15px; font-weight: 500; transition: color .25s var(--ease);
}
.nav-links a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 6px; height: 2px;
  background: var(--accent); border-radius: 2px; transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a.active::after, .nav-links a:hover::after { transform: scaleX(1); }
.nav-cta {
  background: var(--ink); color: #fff !important; padding: 10px 20px !important; border-radius: 999px;
  box-shadow: var(--shadow-sm); transition: transform .25s var(--ease), background .25s;
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--primary); transform: translateY(-1px); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; width: 42px; height: 42px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px auto; transition: .3s var(--ease); }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: 1px solid transparent; transition: all .25s var(--ease);
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 12px 30px -12px rgba(26, 160, 145, .65); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 36px -12px rgba(26, 160, 145, .8); }
.btn-ghost { background: rgba(255,255,255,.16); color: #fff; border-color: rgba(255,255,255,.55); }
.btn-ghost:hover { background: rgba(255,255,255,.28); transform: translateY(-2px); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--primary); transform: translateY(-2px); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, rgba(13,59,57,.24), rgba(13,59,57,.56)), url("../images/hero.png") center/cover no-repeat;
  color: #fff; padding: 132px 0 138px;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(120% 130% at 50% 0%, transparent 60%, rgba(13,59,57,.28));
}
.hero .container { position: relative; z-index: 2; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: 999px;
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.25);
  font-size: 13px; letter-spacing: 1px; margin-bottom: 24px;
}
/* 顶部右侧角标 */
.hero-tag--corner {
  position: absolute; top: 30px; right: 32px; z-index: 3; margin-bottom: 0;
}
.hero h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.18; font-weight: 800; letter-spacing: 1px; }
.hero h1 .hl { color: var(--accent); }
.hero p.lead { margin: 22px 0 36px; font-size: clamp(16px, 2vw, 19px); color: rgba(255,255,255,.86); max-width: 620px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 48px; margin-top: 64px; flex-wrap: wrap; }
.hero-stats .num { font-size: 34px; font-weight: 800; color: #fff; }
.hero-stats .num small { color: var(--accent); }
.hero-stats .label { font-size: 13px; color: rgba(255,255,255,.72); letter-spacing: .5px; }

/* ---------- 区块通用 ---------- */
.section { padding: 96px 0; }
.section.alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-head .eyebrow { color: var(--primary); font-weight: 700; letter-spacing: 3px; font-size: 13px; text-transform: uppercase; }
.section-head h2 { font-size: clamp(26px, 3.5vw, 38px); color: var(--ink); margin: 12px 0 14px; font-weight: 800; letter-spacing: .5px; }
.section-head p { color: var(--text-soft); font-size: 16px; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 26px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 30px; box-shadow: var(--shadow-sm); transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--accent-soft); }
.card .ic {
  width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent-soft), #fff); color: var(--primary);
  font-size: 24px; margin-bottom: 18px; box-shadow: var(--shadow-sm);
}
.card h3 { font-size: 19px; color: var(--ink); margin-bottom: 10px; }
.card p { color: var(--text-soft); font-size: 15px; }
.card .more { display: inline-block; margin-top: 16px; color: var(--primary); font-weight: 600; font-size: 14px; }
.card .more::after { content: " →"; transition: margin .25s; }
.card .more:hover::after { margin-left: 4px; }

/* ---------- 精选线路 ---------- */
.tour { position: relative; border-radius: var(--radius); overflow: hidden; min-height: 300px; display: flex; align-items: flex-end; box-shadow: var(--shadow-sm); transition: transform .35s var(--ease); }
.tour:hover { transform: translateY(-6px); }
.tour .cover { position: absolute; inset: 0; }
.tour .cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(13,59,57,0) 30%, rgba(13,59,57,.72) 100%); }
.tour .body { position: relative; z-index: 2; padding: 26px; color: #fff; width: 100%; }
.tour .tag { display: inline-block; padding: 4px 12px; border-radius: 999px; background: rgba(26,160,145,.95); color: #fff; font-size: 12px; font-weight: 700; margin-bottom: 10px; }
.tour h3 { font-size: 21px; font-weight: 700; }
.tour .meta { font-size: 13px; color: rgba(255,255,255,.8); margin-top: 6px; }
.tour .price { margin-top: 12px; font-size: 18px; font-weight: 800; color: var(--accent); }

/* 线路封面渐变（无需外部图片，保证离线美观） */
.cover.a { background: linear-gradient(135deg, #3bb9a9, #0d3b39); }
.cover.b { background: linear-gradient(135deg, #2e9bd6, #0d3b39); }
.cover.c { background: linear-gradient(135deg, #4fc3a1, #0d3d56); }
.cover.d { background: linear-gradient(135deg, #5bb8d6, #135c57); }
.cover.e { background: linear-gradient(135deg, #6cc6b0, #0d3b39); }
.cover.f { background: linear-gradient(135deg, #4f9fd6, #0c2e44); }

/* ---------- 为什么选择我们 ---------- */
.feature { display: flex; gap: 16px; align-items: flex-start; }
.feature .tick { flex: 0 0 auto; width: 38px; height: 38px; border-radius: 50%; background: var(--primary); color: #fff; display: grid; place-items: center; font-weight: 700; }
.feature h4 { color: var(--ink); font-size: 17px; margin-bottom: 4px; }
.feature p { color: var(--text-soft); font-size: 14px; }

/* ---------- 历程时间线 ---------- */
.timeline { position: relative; max-width: 820px; margin: 0 auto; padding-left: 28px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--accent), var(--line)); }
.tl-item { position: relative; padding: 0 0 34px 28px; }
.tl-item::before { content: ""; position: absolute; left: -28px; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 3px solid var(--accent); box-shadow: 0 0 0 4px rgba(46,155,214,.2); }
.tl-item .year { color: var(--primary); font-weight: 800; font-size: 15px; letter-spacing: 1px; }
.tl-item h4 { color: var(--ink); font-size: 18px; margin: 2px 0 6px; }
.tl-item p { color: var(--text-soft); font-size: 15px; }

/* ---------- 服务流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.step { text-align: center; position: relative; padding: 30px 18px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.step::before { counter-increment: step; content: "0" counter(step); position: absolute; top: -18px; left: 50%; transform: translateX(-50%); width: 40px; height: 40px; border-radius: 50%; background: var(--ink); color: #fff; display: grid; place-items: center; font-weight: 800; }
.step h4 { margin-top: 8px; color: var(--ink); font-size: 17px; }
.step p { color: var(--text-soft); font-size: 14px; margin-top: 6px; }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  background: radial-gradient(120% 140% at 20% 0%, var(--primary-light), var(--ink));
  color: #fff; border-radius: 24px; padding: 56px 48px; text-align: center;
  box-shadow: var(--shadow);
}
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; }
.cta-band p { color: rgba(255,255,255,.82); margin: 14px auto 28px; max-width: 560px; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.info-list li { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px dashed var(--line); }
.info-list .ic { flex: 0 0 auto; width: 44px; height: 44px; border-radius: 12px; background: var(--bg-alt); color: var(--primary); display: grid; place-items: center; font-size: 20px; }
.info-list .k { font-size: 13px; color: var(--text-soft); }
.info-list .v { font-size: 16px; color: var(--ink); font-weight: 600; }

.form { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow-sm); }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; color: var(--ink); font-weight: 600; margin-bottom: 7px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-size: 15px; font-family: inherit; color: var(--text); background: #fbfcfe; transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(22,96,122,.12); }
.field textarea { resize: vertical; min-height: 110px; }
.form .note { font-size: 13px; color: var(--text-soft); margin-top: 8px; }
.form-ok { display: none; padding: 14px 16px; border-radius: var(--radius-sm); background: #eaf6ee; color: #1f7a45; font-size: 14px; margin-bottom: 16px; border: 1px solid #c7e8d2; }

.map-placeholder { height: 280px; border-radius: var(--radius); border: 1px solid var(--line); background:
  repeating-linear-gradient(45deg, #eef2f4 0 18px, #e7edf0 18px 36px);
  display: grid; place-items: center; color: var(--text-soft); font-size: 14px; box-shadow: var(--shadow-sm); }
.map-box { height: 320px; border-radius: var(--radius); border: 1px solid var(--line); overflow: hidden; box-shadow: var(--shadow-sm); background: #eef2f4; }
.map-box .BMap_cpyCtrl, .map-box .anchorBL { font-size: 11px !important; }
.map-tip { padding: 24px; color: var(--text-soft); font-size: 14px; line-height: 1.7; text-align: center; }
.map-tip b { color: var(--primary); }
.form-err { display: none; padding: 14px 16px; border-radius: var(--radius-sm); background: #fdecec; color: #c0392b; font-size: 14px; margin-bottom: 16px; border: 1px solid #f5c6c6; }
.form button[type=submit][disabled] { opacity: .65; cursor: not-allowed; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,.78); padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 36px; }
.site-footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; letter-spacing: .5px; }
.site-footer .logo-f { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.site-footer .logo-f .logo { width: 44px; height: 44px; border-radius: 11px; background: #fff; display: grid; place-items: center; overflow: hidden; box-shadow: var(--shadow-sm); }
.site-footer .logo-f .logo img { width: 100%; height: 100%; object-fit: contain; }
.site-footer p { font-size: 14px; line-height: 1.9; }
.site-footer a { color: rgba(255,255,255,.72); font-size: 14px; display: block; padding: 5px 0; transition: color .2s; }
.site-footer a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 44px; padding-top: 22px; text-align: center; font-size: 13px; color: rgba(255,255,255,.55); }
.footer-bottom .beian-link { display: inline-block; margin-top: 8px; color: rgba(255,255,255,.72); font-size: 13px; letter-spacing: .3px; transition: color .2s; }
.footer-bottom .beian-link:hover { color: var(--accent); }

/* ---------- 页面 Hero（内页） ---------- */
.page-hero { background: radial-gradient(120% 130% at 85% 0%, var(--primary-light), var(--ink)); color: #fff; padding: 92px 0 84px; position: relative; overflow: hidden; }
.page-hero::after { content: ""; position: absolute; right: -80px; top: -60px; width: 320px; height: 320px; border-radius: 50%; background: rgba(59,185,169,.18); filter: blur(8px); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero .crumb { font-size: 13px; color: rgba(255,255,255,.6); letter-spacing: 1px; }
.page-hero h1 { font-size: clamp(30px, 4.5vw, 46px); margin: 12px 0 12px; font-weight: 800; letter-spacing: 1px; }
.page-hero p { color: rgba(255,255,255,.82); max-width: 600px; }

/* 数据指标条 */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.metric { text-align: center; padding: 30px 16px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.metric .n { font-size: 38px; font-weight: 800; color: var(--primary); }
.metric .n small { color: var(--accent); }
.metric .t { font-size: 14px; color: var(--text-soft); margin-top: 4px; }

/* 滚动渐显 */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 实景照片封面 ---------- */
.bg-hero     { background-image: url("../images/hero.png"); }
.bg-huazhong { background-image: url("../images/huazhong.png"); }
.bg-xibei    { background-image: url("../images/xibei.png"); }
.bg-chuanyu  { background-image: url("../images/chuanyu.png"); }
.bg-xian     { background-image: url("../images/xian.png"); }
.bg-beijing  { background-image: url("../images/beijing.png"); }
.bg-hainan   { background-image: url("../images/hainan.png"); }
.bg-shanghai { background-image: url("../images/shanghai.png"); }
.bg-yunnan   { background-image: url("../images/yunnan.png"); }
.bg-domestic { background-image: url("../images/biz-domestic.png"); }
.bg-intl     { background-image: url("../images/biz-intl.png"); }
.bg-meeting  { background-image: url("../images/biz-meeting.png"); }
.bg-team     { background-image: url("../images/biz-team.png"); }

.bg-hero, .bg-huazhong, .bg-xibei, .bg-chuanyu, .bg-xian, .bg-beijing,
.bg-hainan, .bg-shanghai, .bg-yunnan, .bg-domestic, .bg-intl, .bg-meeting, .bg-team {
  background-size: cover; background-position: center; background-repeat: no-repeat;
}
.tour .cover { background-size: cover; background-position: center; }

/* 内页 Hero 实景背景（通过内联 --ph 指定图片） */
.page-hero.has-photo {
  background-image: linear-gradient(180deg, rgba(13,59,57,.30), rgba(13,59,57,.58)), var(--ph);
  background-size: cover; background-position: center;
}

/* 业务栏目配图（图文左右） */
.biz-figure { height: 240px; border-radius: var(--radius); background-size: cover; background-position: center; box-shadow: var(--shadow-sm); }

/* 关于页图集 */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.gallery .ph { height: 210px; border-radius: var(--radius-sm); background-size: cover; background-position: center; box-shadow: var(--shadow-sm); transition: transform .3s var(--ease), box-shadow .3s; }
.gallery .ph:hover { transform: translateY(-4px); box-shadow: var(--shadow); }

/* 首页热门目的地 strip */
.dest-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.dest { position: relative; border-radius: var(--radius-sm); overflow: hidden; height: 150px; display: flex; align-items: flex-end; box-shadow: var(--shadow-sm); transition: transform .3s var(--ease); }
.dest:hover { transform: translateY(-4px); }
.dest .bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.dest::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(13,59,57,0), rgba(13,59,57,.62)); }
.dest span { position: relative; z-index: 2; color: #fff; font-weight: 700; padding: 12px 14px; font-size: 15px; letter-spacing: .5px; }
.dest small { display: block; font-size: 12px; font-weight: 400; color: var(--accent-soft); }

/* 经典热门线路（目的地行程卡） */
.routes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.route { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; transition: transform .3s var(--ease), box-shadow .3s var(--ease); }
.route:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.route .cover { height: 200px; position: relative; background-size: cover; background-position: center; }
.route .cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(13,59,57,0) 38%, rgba(13,59,57,.82)); }
.route .cover .body { position: absolute; z-index: 2; left: 0; right: 0; bottom: 0; padding: 20px 22px; color: #fff; }
.route .cover .tag { display: inline-block; padding: 4px 12px; border-radius: 999px; background: rgba(26,160,145,.95); color: #fff; font-size: 12px; font-weight: 700; margin-bottom: 8px; }
.route .cover h3 { font-size: 22px; font-weight: 800; }
.route .cover .meta { font-size: 13px; color: rgba(255,255,255,.82); margin-top: 4px; }
.route .content { padding: 20px 24px 24px; }
.route .content .intro { color: var(--text-soft); font-size: 14px; line-height: 1.7; }
.route .content .price { margin-top: 12px; font-size: 17px; font-weight: 800; color: var(--primary); }
.itinerary { margin-top: 16px; border-top: 1px dashed var(--line); padding-top: 12px; }
.itinerary summary { cursor: pointer; font-weight: 700; color: var(--primary); font-size: 15px; list-style: none; display: flex; align-items: center; justify-content: space-between; user-select: none; }
.itinerary summary::-webkit-details-marker { display: none; }
.itinerary summary::after { content: "＋"; font-size: 18px; line-height: 1; transition: transform .2s; }
.itinerary[open] summary::after { content: "－"; }
.itinerary .days { margin-top: 12px; }
.itinerary .day { display: flex; gap: 12px; padding: 9px 0; border-bottom: 1px solid #f0f2f4; font-size: 14px; }
.itinerary .day:last-child { border-bottom: 0; }
.itinerary .day .d { flex: 0 0 auto; width: 58px; font-weight: 700; color: var(--primary); }
.itinerary .day .t { color: var(--text); }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .routes { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .dest-strip { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .gallery { grid-template-columns: 1fr; }
  .dest-strip { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 980px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links {
    position: fixed; top: 72px; left: 0; right: 0; background: var(--bg);
    flex-direction: column; align-items: stretch; gap: 0; padding: 12px 20px 20px;
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
    transform: translateY(-120%); transition: transform .35s var(--ease); z-index: 90;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 14px 12px; border-radius: 10px; }
  .nav-links a::after { display: none; }
  .nav-links .nav-cta { margin-top: 8px; text-align: center; }
  .nav-toggle { display: block; }
  .grid-3, .grid-4, .grid-2, .steps, .metrics { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 68px 0; }
  .hero { padding: 96px 0 104px; }
  .hero-tag--corner { top: 18px; right: 16px; font-size: 11px; padding: 5px 12px; letter-spacing: .5px; }
  .hero-stats { gap: 30px; }
  .cta-band { padding: 44px 26px; }
  .page-hero { padding: 76px 0 64px; }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}