/* ==========================================================================
   启航升学 · 高考志愿填报中心  官方站点样式表
   纯静态，无外部依赖。修改配色只需改 :root 变量。
   ========================================================================== */

:root{
  --c-primary:#123a8f;
  --c-primary-600:#1b4bb5;
  --c-primary-400:#3f74e0;
  --c-primary-50:#eef3fd;
  --c-accent:#c99a35;
  --c-accent-soft:#f7edd9;
  --c-ink:#131b2e;
  --c-body:#4c586e;
  --c-muted:#7b8798;
  --c-line:#e5ebf5;
  --c-bg:#ffffff;
  --c-bg-soft:#f5f8fd;
  --c-bg-deep:#0b1f4d;
  --radius:14px;
  --radius-lg:22px;
  --shadow-sm:0 2px 10px rgba(18,58,143,.06);
  --shadow:0 12px 32px rgba(18,58,143,.10);
  --shadow-lg:0 26px 60px rgba(11,31,77,.16);
  --container:1180px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--c-body);background:var(--c-bg);
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0 0 .6em;color:var(--c-ink);line-height:1.32;font-weight:700;letter-spacing:-.01em}
h1{font-size:2.6rem}
h2{font-size:2rem}
h3{font-size:1.2rem}
p{margin:0 0 1em}
a{color:var(--c-primary-600);text-decoration:none;transition:color .2s}
a:hover{color:var(--c-accent)}
ul,ol{padding-left:1.25em}
img{max-width:100%;height:auto;display:block}
strong{color:var(--c-ink)}
hr{border:0;border-top:1px solid var(--c-line);margin:2.5rem 0}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}
.section{padding:86px 0}
.section--soft{background:var(--c-bg-soft)}
.section--tight{padding:60px 0}
.center{text-align:center}
.lead{font-size:1.08rem;color:var(--c-body)}
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
.hide{display:none !important}

/* ---------- 通用标题块 ---------- */
.eyebrow{
  display:inline-block;font-size:.82rem;font-weight:700;letter-spacing:.16em;
  color:var(--c-primary-600);background:var(--c-primary-50);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;text-transform:uppercase;
}
.section-head{max-width:760px;margin:0 auto 52px;text-align:center}
.section-head p{margin:0;color:var(--c-body)}
.section-head--left{margin-left:0;text-align:left}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-size:.98rem;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.22s ease;white-space:nowrap;
  font-family:inherit;line-height:1.4;
}
.btn-primary{background:linear-gradient(135deg,var(--c-primary-600),var(--c-primary-400));color:#fff;box-shadow:0 10px 24px rgba(27,75,181,.28)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(27,75,181,.34)}
.btn-gold{background:linear-gradient(135deg,#d8a93f,var(--c-accent));color:#3a2a06;box-shadow:0 10px 24px rgba(201,154,53,.3)}
.btn-gold:hover{color:#3a2a06;transform:translateY(-2px)}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-outline{border-color:var(--c-line);color:var(--c-primary);background:#fff}
.btn-outline:hover{border-color:var(--c-primary-400);color:var(--c-primary-600)}
.btn-sm{padding:9px 18px;font-size:.9rem}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--c-line);
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(18,58,143,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:74px}
.brand{display:flex;align-items:center;gap:11px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-logo{width:38px;height:38px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:1.1rem;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:.72rem;color:var(--c-muted);letter-spacing:.1em}
.nav{display:flex;align-items:center;gap:4px}
.nav > a{
  padding:9px 14px;border-radius:9px;font-size:.95rem;font-weight:500;color:var(--c-ink);
}
.nav > a:hover{background:var(--c-primary-50);color:var(--c-primary-600)}
.nav > a.is-active{color:var(--c-primary-600);font-weight:700;background:var(--c-primary-50)}
.nav-cta{margin-left:10px;color:#fff}
.nav-cta:hover{color:#fff;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-400))}
.nav-toggle{
  display:none;width:44px;height:40px;border:1px solid var(--c-line);border-radius:10px;
  background:#fff;cursor:pointer;padding:10px;flex-direction:column;justify-content:space-between;
}
.nav-toggle span{display:block;height:2px;background:var(--c-ink);border-radius:2px;transition:.25s}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(140deg,#08204f 0%,#123a8f 45%,#2258c9 100%);
  padding:88px 0 96px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(circle at 30% 20%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 20%,#000,transparent 78%);
}
.hero::after{
  content:"";position:absolute;width:620px;height:620px;right:-180px;top:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,154,53,.42),transparent 66%);filter:blur(10px);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero h1{color:#fff;font-size:2.9rem;margin-bottom:20px}
.hero h1 .hl{
  background:linear-gradient(120deg,#ffe1a3,#e5b85a);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:#e5b85a;
}
.hero-sub{font-size:1.1rem;color:rgba(255,255,255,.86);max-width:560px;margin-bottom:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 34px;padding:0;list-style:none}
.hero-tags li{
  font-size:.86rem;padding:6px 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.1);color:rgba(255,255,255,.94);
}
.hero-note{margin-top:22px;font-size:.86rem;color:rgba(255,255,255,.62)}
.hero-card{
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);border-radius:var(--radius-lg);
  padding:26px;backdrop-filter:blur(8px);box-shadow:var(--shadow-lg);
}
.hero-card h3{color:#fff;font-size:1.05rem;margin-bottom:16px;display:flex;align-items:center;gap:9px}
.hero-card h3 i{width:8px;height:8px;border-radius:50%;background:#e5b85a;display:block}
.hero-list{list-style:none;padding:0;margin:0 0 22px}
.hero-list li{
  display:flex;gap:11px;align-items:flex-start;padding:9px 0;font-size:.94rem;
  color:rgba(255,255,255,.9);border-bottom:1px dashed rgba(255,255,255,.16);
}
.hero-list li:last-child{border-bottom:0}
.hero-list b{color:#ffe1a3;font-weight:700}
.tick{
  flex:none;width:19px;height:19px;border-radius:50%;background:rgba(229,184,90,.24);
  display:grid;place-items:center;font-size:.7rem;color:#ffe1a3;margin-top:3px;
}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);margin-top:-58px;position:relative;z-index:5;overflow:hidden;
}
.stat{padding:28px 22px;text-align:center;border-right:1px solid var(--c-line)}
.stat:last-child{border-right:0}
.stat .num{
  font-size:2.05rem;font-weight:800;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.stat .num span{font-size:1.05rem;margin-left:2px}
.stat p{margin:6px 0 0;font-size:.9rem;color:var(--c-muted)}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:30px 26px;transition:.25s ease;height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d3e0f7}
.card h3{margin-bottom:10px}
.card p:last-child{margin-bottom:0}
.card-icon{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--c-primary-50);color:var(--c-primary-600);
}
.card-icon svg{width:26px;height:26px}
.card-gold .card-icon{background:var(--c-accent-soft);color:#a97e22}
.card-num{
  font-size:.78rem;font-weight:800;letter-spacing:.16em;color:var(--c-accent);margin-bottom:8px;
}
.card-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:.92rem;margin-top:14px}
.card-link::after{content:"→";transition:transform .2s}
.card-link:hover::after{transform:translateX(4px)}

/* ---------- 服务流程 ---------- */
.steps{counter-reset:step;display:grid;gap:22px;grid-template-columns:repeat(5,1fr)}
.step{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:30px 20px 24px;text-align:center;
}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;top:-15px;left:50%;transform:translateX(-50%);
  background:linear-gradient(135deg,var(--c-primary-600),var(--c-primary-400));color:#fff;
  font-size:.78rem;font-weight:800;letter-spacing:.08em;padding:5px 12px;border-radius:999px;
  box-shadow:0 6px 16px rgba(27,75,181,.3);
}
.step h4{margin:10px 0 8px;font-size:1rem;color:var(--c-ink)}
.step p{font-size:.88rem;margin:0;color:var(--c-muted)}

/* ---------- 特色列表 ---------- */
.feature-list{list-style:none;padding:0;margin:0;display:grid;gap:16px}
.feature-list li{display:flex;gap:14px;align-items:flex-start}
.feature-list .fi{
  flex:none;width:34px;height:34px;border-radius:10px;background:var(--c-primary-50);
  color:var(--c-primary-600);display:grid;place-items:center;font-weight:800;font-size:.92rem;
}
.feature-list b{display:block;color:var(--c-ink);margin-bottom:2px}
.feature-list p{margin:0;font-size:.92rem;color:var(--c-body)}

/* ---------- 文章卡片 ---------- */
.post-card{display:flex;flex-direction:column;padding:0;overflow:hidden}
.post-cover{
  height:132px;background:linear-gradient(135deg,#123a8f,#2f66da);position:relative;
  display:grid;place-items:center;
}
.post-cover span{
  font-size:1.6rem;font-weight:800;color:rgba(255,255,255,.2);letter-spacing:.2em;
}
.post-cover--gold{background:linear-gradient(135deg,#a97e22,#e0b354)}
.post-cover--teal{background:linear-gradient(135deg,#0f5c66,#1aa5a5)}
.post-cover--plum{background:linear-gradient(135deg,#5b2560,#a04fa8)}
.post-body{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1}
.post-meta{font-size:.8rem;color:var(--c-muted);margin-bottom:9px;display:flex;gap:10px;flex-wrap:wrap}
.post-meta i{font-style:normal;padding:1px 8px;border-radius:999px;background:var(--c-primary-50);color:var(--c-primary-600)}
.post-body h3{font-size:1.08rem;margin-bottom:10px}
.post-body p{font-size:.92rem;flex:1}

/* ---------- 案例 ---------- */
.case{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:28px 26px;position:relative;height:100%;
}
.case-top{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:16px}
.case-tag{font-size:.76rem;font-weight:700;padding:4px 11px;border-radius:999px;background:var(--c-primary-50);color:var(--c-primary-600)}
.case-score{font-size:.82rem;color:var(--c-muted);white-space:nowrap}
.case-route{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:16px 0 0;font-size:.9rem}
.case-route .from{color:var(--c-muted)}
.case-route .arrow{color:var(--c-accent);font-weight:800}
.case-route .to{font-weight:700;color:var(--c-ink)}
.case-note{margin:16px 0 0;padding-top:14px;border-top:1px dashed var(--c-line);font-size:.9rem;color:var(--c-body)}
.quote{
  background:linear-gradient(135deg,#0b1f4d,#173f96);color:#fff;border-radius:var(--radius-lg);
  padding:44px 46px;position:relative;overflow:hidden;
}
.quote::after{
  content:"”";position:absolute;right:26px;bottom:-52px;font-size:11rem;color:rgba(255,255,255,.07);line-height:1;
}
.quote p{font-size:1.05rem;color:rgba(255,255,255,.92);position:relative;z-index:2}
.quote footer{font-size:.88rem;color:rgba(255,255,255,.62);position:relative;z-index:2}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto}
.faq-item{border:1px solid var(--c-line);border-radius:var(--radius);background:#fff;margin-bottom:14px;overflow:hidden}
.faq-item[open]{border-color:#cfdefa;box-shadow:var(--shadow-sm)}
.faq-item summary{
  cursor:pointer;padding:19px 24px;font-weight:600;color:var(--c-ink);list-style:none;
  display:flex;justify-content:space-between;gap:16px;align-items:center;font-size:1.02rem;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:1.35rem;color:var(--c-primary-400);font-weight:400;flex:none;transition:transform .2s;
}
.faq-item[open] summary::after{content:"−";color:var(--c-accent)}
.faq-body{padding:0 24px 22px;font-size:.95rem}
.faq-body p:last-child{margin-bottom:0}

/* ---------- 表单 ---------- */
.form-wrap{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-lg);
  padding:34px;box-shadow:var(--shadow-sm);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
.field label{font-size:.9rem;font-weight:600;color:var(--c-ink)}
.field label em{color:#d9534f;font-style:normal}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:.95rem;color:var(--c-ink);background:#fff;
  border:1px solid var(--c-line);border-radius:10px;padding:12px 14px;transition:.2s;width:100%;
}
.field textarea{resize:vertical;min-height:110px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary-400);box-shadow:0 0 0 3px rgba(63,116,224,.14);
}
.field .hint{font-size:.8rem;color:var(--c-muted)}
.form-foot{margin-top:22px;display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.form-foot .ps{font-size:.82rem;color:var(--c-muted);margin:0}
.form-result{
  margin-top:22px;border:1px solid #bfe3c8;background:#f2fbf5;border-radius:var(--radius);
  padding:22px;display:none;
}
.form-result.is-open{display:block}
.form-result h4{color:#1c7a3e;margin-bottom:8px}
.form-result pre{
  background:#fff;border:1px solid #d6ecdc;border-radius:10px;padding:14px;
  font-size:.85rem;white-space:pre-wrap;word-break:break-all;margin:12px 0;color:var(--c-ink);
  font-family:"SFMono-Regular",Consolas,monospace;max-height:240px;overflow:auto;
}

/* ---------- 联系方式块 ---------- */
.contact-list{list-style:none;padding:0;margin:0;display:grid;gap:18px}
.contact-list li{display:flex;gap:15px;align-items:flex-start}
.contact-list .ci{
  flex:none;width:44px;height:44px;border-radius:12px;background:var(--c-primary-50);
  color:var(--c-primary-600);display:grid;place-items:center;
}
.contact-list .ci svg{width:21px;height:21px}
.contact-list b{display:block;color:var(--c-ink);font-size:.95rem}
.contact-list span{font-size:.95rem;color:var(--c-body);word-break:break-all}
.qr-box{
  text-align:center;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);
}
.qr-box a{display:block;text-decoration:none}
.qr-box img,.qr-box svg{width:200px;height:200px;margin:0 auto 12px;border-radius:12px;display:block}
.qr-box p{font-size:.86rem;color:var(--c-muted);margin:0}

/* ---------- 内容页（文章 / 长文） ---------- */
.page-hero{
  background:linear-gradient(140deg,#08204f,#123a8f 60%,#24589f);
  color:#fff;padding:64px 0 68px;position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-160px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,154,53,.35),transparent 68%);
}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{color:#fff;font-size:2.3rem;margin-bottom:12px}
.page-hero p{color:rgba(255,255,255,.82);max-width:700px;margin:0}
.crumb{font-size:.85rem;color:rgba(255,255,255,.6);margin-bottom:14px}
.crumb a{color:rgba(255,255,255,.78)}
.crumb a:hover{color:#ffe1a3}

.prose{max-width:820px}
.prose h2{font-size:1.5rem;margin-top:2.4rem;padding-left:14px;border-left:4px solid var(--c-accent)}
.prose h3{margin-top:1.8rem;font-size:1.13rem}
.prose p,.prose li{font-size:1.01rem}
.prose ul,.prose ol{padding-left:1.4em}
.prose li{margin-bottom:.45em}
.prose blockquote{
  margin:1.6rem 0;padding:18px 22px;background:var(--c-primary-50);
  border-left:4px solid var(--c-primary-400);border-radius:0 10px 10px 0;color:var(--c-ink);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose table{width:100%;border-collapse:collapse;margin:1.6rem 0;font-size:.93rem}
.prose th,.prose td{border:1px solid var(--c-line);padding:11px 13px;text-align:left}
.prose th{background:var(--c-bg-soft);color:var(--c-ink);font-weight:700}
.prose tbody tr:nth-child(even){background:#fbfcff}
.note{
  background:var(--c-accent-soft);border:1px solid #ecdcb8;border-radius:var(--radius);
  padding:18px 22px;margin:1.6rem 0;font-size:.94rem;color:#5c4712;
}
.note b{color:#8a6a15}
.toc{
  background:var(--c-bg-soft);border:1px solid var(--c-line);border-radius:var(--radius);
  padding:22px 26px;margin-bottom:34px;
}
.toc h4{margin-bottom:10px;font-size:.92rem;letter-spacing:.08em;color:var(--c-muted)}
.toc ol{margin:0;padding-left:1.2em}
.toc li{margin-bottom:6px;font-size:.94rem}
.layout-aside{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start}
.aside-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:24px;margin-bottom:22px;box-shadow:var(--shadow-sm);
}
.aside-card h4{font-size:1rem;margin-bottom:14px}
.aside-list{list-style:none;padding:0;margin:0}
.aside-list li{padding:9px 0;border-bottom:1px dashed var(--c-line);font-size:.92rem}
.aside-list li:last-child{border-bottom:0}
.aside-sticky{position:sticky;top:96px}

.cta-band{
  background:linear-gradient(135deg,#0b1f4d,#1b4bb5);border-radius:var(--radius-lg);
  padding:48px 46px;color:#fff;display:grid;grid-template-columns:1.4fr auto;gap:32px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;width:380px;height:380px;right:-120px;bottom:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,154,53,.34),transparent 68%);
}
.cta-band h2{color:#fff;margin-bottom:10px;font-size:1.7rem}
.cta-band p{color:rgba(255,255,255,.8);margin:0}
.cta-band .btn-row{position:relative;z-index:2}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin:0;padding:0 0 0 34px;list-style:none}
.timeline::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;background:var(--c-line)}
.timeline li{position:relative;padding-bottom:30px}
.timeline li::before{
  content:"";position:absolute;left:-32px;top:6px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--c-primary-400);
}
.timeline li:last-child{padding-bottom:0}
.timeline h4{margin:0 0 6px;font-size:1.05rem}
.timeline span{font-size:.82rem;color:var(--c-accent);font-weight:700;letter-spacing:.06em}
.timeline p{margin:6px 0 0;font-size:.93rem}

/* ---------- 页脚 ---------- */
.site-footer{background:#0a1730;color:rgba(255,255,255,.66);padding:64px 0 28px;margin-top:0}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:38px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.1)}
.site-footer .brand{color:#fff;margin-bottom:14px}
.site-footer .brand-text strong{color:#fff}
.site-footer .brand-text em{color:rgba(255,255,255,.5)}
.footer-about{font-size:.9rem;line-height:1.8;margin:0 0 16px}
.footer-col h4{color:#fff;font-size:.98rem;margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.66);font-size:.92rem}
.footer-col a:hover{color:#ffe1a3}
.footer-contact li{font-size:.92rem}
.footer-bottom{padding-top:24px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:.84rem}
.footer-bottom p{margin:0}
.disclaimer{color:rgba(255,255,255,.42);max-width:640px}

/* 回到顶部 */
.to-top{
  position:fixed;right:22px;bottom:24px;width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--shadow);color:var(--c-primary);
  display:grid;place-items:center;cursor:pointer;opacity:0;visibility:hidden;transition:.28s;z-index:90;
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}

/* 文章阅读进度条 */
.read-bar{
  position:fixed;top:0;left:0;height:3px;width:0;z-index:200;
  background:linear-gradient(90deg,var(--c-accent),#ffe1a3);transition:width .08s linear;
}

/* 滚动出现动画 */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 404 ---------- */
.err-page{min-height:62vh;display:grid;place-items:center;text-align:center;padding:80px 0}
.err-code{font-size:6rem;font-weight:800;line-height:1;color:var(--c-primary-50);letter-spacing:.05em}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:2.4rem}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .layout-aside{grid-template-columns:1fr;gap:34px}
  .aside-sticky{position:static}
  .footer-top{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:900px){
  .nav{
    position:fixed;inset:74px 0 auto;background:#fff;flex-direction:column;align-items:stretch;
    padding:14px 22px 22px;gap:2px;border-bottom:1px solid var(--c-line);
    box-shadow:0 18px 40px rgba(11,31,77,.12);display:none;
  }
  .nav.is-open{display:flex}
  .nav > a{padding:13px 12px;border-radius:10px;font-size:1rem}
  .nav-cta{margin:10px 0 0;justify-content:center}
  .nav-toggle{display:flex}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat{border-bottom:1px solid var(--c-line)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0}
  .grid-3{grid-template-columns:1fr 1fr}
  .cta-band{grid-template-columns:1fr;padding:36px 28px}
  .quote{padding:32px 26px}
}
@media (max-width:640px){
  html{font-size:15px}
  .section{padding:62px 0}
  .hero{padding:60px 0 74px}
  .hero h1{font-size:1.92rem}
  h2{font-size:1.55rem}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr;gap:26px}
  .form-grid{grid-template-columns:1fr}
  .form-wrap{padding:24px 20px}
  .page-hero h1{font-size:1.72rem}
  .footer-top{grid-template-columns:1fr}
  .stats{margin-top:-44px}
  .brand-text em{display:none}
  .footer-bottom{flex-direction:column}
}
@media print{
  .site-header,.to-top,.cta-band,.hero::after{display:none}
  body{font-size:12pt}
}

/* 无障碍：系统开启「减弱动态效果」时，取消入场动画与过渡，内容直接显示 */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}