/* ============================================================
   MayiVPN 官网 — 暖阳主题 (warm sunrise)  全局由 config 主题变量驱动
   主色 珊瑚橙 → 琥珀金 渐变 · 奶油底 · 暖棕文字
   ============================================================ */
:root{
  --primary:#FF6A3D; --secondary:#FFB02E; --accent:#FFC857;
  --bg:#FFF9F0; --text:#2B2119; --muted:#8A7A68;
  --card:#FFFFFF; --line:#F3E3D2;
  --shadow:0 20px 55px rgba(255,106,61,.16);
  --gradient:linear-gradient(135deg,#FF6A3D,#FFB02E);
  --gradient-soft:linear-gradient(135deg,rgba(255,106,61,.12),rgba(255,176,46,.12));
  --radius:18px;
  --nav-h:72px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--text);line-height:1.75;
  font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
  background:var(--bg);
  background-image:
    radial-gradient(1100px 520px at 12% -6%,rgba(255,176,46,.16),transparent 60%),
    radial-gradient(900px 500px at 96% 4%,rgba(255,106,61,.14),transparent 55%),
    linear-gradient(180deg,#fff 0,var(--bg) 55%,#fff 100%);
  background-attachment:fixed;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
img{max-width:100%}
.container{width:min(1180px,92%);margin:auto}
::selection{background:rgba(255,106,61,.2)}

/* ---------- Nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,249,240,.82);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(243,227,210,.9)}
.nav-in{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;gap:11px;align-items:center;font-weight:800;font-size:17px}
.logo{width:38px;height:38px;border-radius:13px;background:var(--gradient);display:grid;place-items:center;color:#fff;font-size:13px;font-weight:800;box-shadow:var(--shadow);letter-spacing:.02em}
.logo-image{display:block;object-fit:contain;background:transparent;padding:0;box-shadow:none;border-radius:10px}
.menu{display:flex;gap:24px;align-items:center;font-size:14px}
.menu a{color:var(--text);opacity:.82;transition:.2s;font-weight:500;position:relative}
.menu a:hover{opacity:1;color:var(--primary)}
.menu a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--gradient);border-radius:2px;transition:.28s}
.menu a:hover::after{width:100%}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:999px;
  background:var(--gradient);color:#fff;font-weight:700;box-shadow:0 12px 30px rgba(255,106,61,.35);
  border:0;cursor:pointer;position:relative;overflow:hidden;transition:transform .22s ease,box-shadow .22s ease;font-size:15px}
.btn:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(255,106,61,.45)}
.btn:active{transform:translateY(0)}
.btn::after{content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;background:linear-gradient(105deg,transparent,rgba(255,255,255,.45),transparent);animation:shimmer 3.2s infinite}
@keyframes shimmer{0%{left:-120%}60%,100%{left:150%}}
.btn.ghost{background:#fff;color:var(--primary);border:1.5px solid #FFD9C2;box-shadow:0 8px 24px rgba(255,106,61,.12)}
.btn.ghost:hover{border-color:var(--primary)}
.btn.mobile{display:none}

/* ---------- Hero ---------- */
.hero{padding:92px 0 76px;position:relative}
.hero-grid,.split,.page-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.eyebrow,.tag{display:inline-block;font-weight:800;letter-spacing:.06em;font-size:13px;padding:7px 16px;border-radius:999px;
  background:var(--gradient-soft);color:var(--primary);border:1px solid rgba(255,106,61,.22)}
.eyebrow{margin-bottom:18px}
.hero h1{font-size:clamp(40px,6vw,70px);line-height:1.12;margin:14px 0 22px;font-weight:850;letter-spacing:-.01em;
  background:linear-gradient(120deg,#2B2119 20%,#B45309 70%,#F59E0B);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:fadeUp .7s ease both}
.lead{font-size:19px;color:var(--muted);max-width:680px;animation:fadeUp .7s .1s ease both}
.actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px;animation:fadeUp .7s .18s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}

.hero-media,.page-hero-media,.content-visual{margin:0;position:relative;border-radius:28px;overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);background:linear-gradient(150deg,#FFF1DE,#FFE4CC);min-height:340px}
.hero-media-home{min-height:460px}
.hero-media:after,.page-hero-media:after,.content-visual:after{content:"";position:absolute;inset:auto 10% -20px 10%;height:46px;
  background:rgba(255,106,61,.28);filter:blur(26px);border-radius:50%;z-index:1}
.visual-image{display:block;width:100%;height:100%;object-fit:cover;position:relative;z-index:2;transition:transform .6s ease}
.hero-media:hover .visual-image,.page-hero-media:hover .visual-image{transform:scale(1.04)}

.oblob{position:absolute;border-radius:50%;filter:blur(46px);opacity:.5;pointer-events:none;z-index:0;animation:blob 14s ease-in-out infinite}
.oblob.a{width:340px;height:340px;background:rgba(255,176,46,.5);top:-80px;right:-60px}
.oblob.b{width:280px;height:280px;background:rgba(255,106,61,.4);bottom:10px;left:-70px;animation-delay:-6s}
@keyframes blob{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(24px,-26px) scale(1.08)}}

/* ---------- Sections / cards ---------- */
.section{padding:72px 0;position:relative;z-index:1}
.section h2{font-size:clamp(26px,3.6vw,38px);line-height:1.2;margin:10px 0 12px;font-weight:800;letter-spacing:-.01em}
.sub{color:var(--muted);font-size:17px;max-width:760px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:34px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:0 10px 30px rgba(180,83,9,.06);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient);opacity:0;transition:.3s}
.card:hover{transform:translateY(-6px);box-shadow:0 24px 50px rgba(255,106,61,.16);border-color:#FFD9C2}
.card:hover::before{opacity:1}
.card h3{font-size:18px;margin:0 0 8px;font-weight:800}
.card p{margin:0;color:var(--muted);font-size:15px}
.icon{font-size:26px;margin-bottom:12px;display:inline-grid;place-items:center;width:52px;height:52px;border-radius:14px;background:var(--gradient-soft)}
.card.step{text-align:center}
.card.step .icon{margin:0 auto 14px}
.device{gap:14px;padding:16px;border:1px solid var(--line);border-radius:16px;margin-bottom:12px;background:#fff;display:flex;align-items:center;transition:transform .25s ease,border-color .25s ease}
.device:hover{border-color:#FFD9C2;transform:translateX(4px)}
.device .icon{width:44px;height:44px;flex:0 0 auto;justify-content:center}

.band{margin-top:40px;background:var(--gradient);border-radius:26px;padding:40px;color:#fff;box-shadow:0 24px 60px rgba(255,106,61,.35);position:relative;overflow:hidden}
.band::after{content:"";position:absolute;inset:auto -60px -80px auto;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.18);filter:blur(30px)}
.band h2,.band h3{color:#fff}
.band p,.band .sub{color:rgba(255,255,255,.92)}
.band .btn{background:#fff;color:var(--primary);box-shadow:none}

/* ---------- Pricing ---------- */
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.price{background:#fff;border:1px solid var(--line);border-radius:24px;padding:30px;text-align:center;position:relative;box-shadow:0 10px 30px rgba(180,83,9,.06);transition:transform .3s ease,box-shadow .3s ease}
.price:hover{transform:translateY(-6px);box-shadow:0 24px 50px rgba(255,106,61,.16)}
.price.popular{border:2px solid var(--primary)}
.price .pill{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--gradient);color:#fff;font-size:12px;font-weight:800;padding:5px 14px;border-radius:999px}
.price b{font-size:44px;color:var(--primary)}
.price small{color:var(--muted)}

/* ---------- Help center ---------- */
.help-search{padding:28px;border-radius:24px;background:var(--gradient-soft);border:1px solid rgba(255,106,61,.22)}
.help-search strong{font-size:22px}
.help-categories{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:28px}
.help-card{display:block;background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.help-card:hover{transform:translateY(-5px);box-shadow:0 20px 44px rgba(255,106,61,.16);border-color:#FFD9C2}
.help-card span{color:var(--primary);font-weight:700;font-size:14px}
.faq-list{display:grid;gap:12px;margin-top:26px}
.faq-list details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 20px;transition:border-color .2s ease}
.faq-list details[open]{border-color:#FFD9C2}
.faq-list summary{cursor:pointer;font-weight:800;font-size:16px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-list summary::after{content:"−";font-size:22px;color:var(--primary);transition:transform .25s ease}
.faq-list details:not([open]) summary::after{content:"+";transform:none}
.faq-list details p{color:var(--muted);margin-bottom:0;margin-top:10px}

/* ---------- SEO rich ---------- */
.seo-rich{padding-top:64px}
.rich-intro{font-size:17px;max-width:900px}
.rich-grid{grid-template-columns:repeat(3,1fr)}
.rich-copy{display:grid;gap:18px;margin-top:34px}
.rich-block{background:#fff;border-left:4px solid var(--primary);padding:22px 24px;border-radius:0 18px 18px 0;box-shadow:0 8px 24px rgba(180,83,9,.06);transition:transform .25s ease}
.rich-block:hover{transform:translateX(4px)}
.rich-block h3{margin:0 0 8px}
.rich-block p{margin:0;color:var(--muted)}
.rich-faq{margin-top:34px}
.related-links{margin-top:28px;display:flex;gap:10px 16px;flex-wrap:wrap;align-items:center}
.related-links a{color:var(--primary);font-weight:700;padding:7px 14px;background:var(--gradient-soft);border-radius:999px;border:1px solid rgba(255,106,61,.18);transition:background .2s ease,color .2s ease}
.related-links a:hover{background:var(--gradient);color:#fff}
.seo-rich .card p{color:var(--muted)}
.keyword-section,.topic-focus,.seo-deep,.v11-content,.keyword-context{margin-top:34px}
.note{background:var(--gradient-soft);border:1px solid rgba(255,106,61,.2);border-left:4px solid var(--primary);border-radius:12px;padding:16px 18px;color:var(--muted)}
.popular-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:30px}

/* ---------- Footer ---------- */
footer{background:#2B2119;color:#F3E3D2;margin-top:60px;padding:52px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
footer h3{color:#fff;font-size:16px;margin:0 0 14px}
footer a{color:#D9C7B2;display:block;margin-bottom:9px;transition:color .2s ease}
footer a:hover{color:#fff}
footer .brand{color:#fff}

/* ---------- Reveal on scroll (app.js adds .in) ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s cubic-bezier(.2,.7,.3,1),transform .6s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* node pulse */
.pulse-dot{width:10px;height:10px;border-radius:50%;background:var(--secondary);display:inline-block;position:relative;margin-right:8px;vertical-align:middle}
.pulse-dot::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:2px solid var(--secondary);animation:pulse 1.8s ease-out infinite}
@keyframes pulse{0%{transform:scale(.6);opacity:1}100%{transform:scale(1.6);opacity:0}}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .grid,.rich-grid,.popular-grid{grid-template-columns:repeat(2,1fr)}
  .pricing,.help-categories{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .hero-grid,.split,.page-hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-media-home{min-height:0}
}
@media(max-width:640px){
  .menu{display:none}
  .btn.mobile{display:inline-flex}
  .grid,.rich-grid,.popular-grid,.pricing,.help-categories{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero{padding:60px 0}
}