/* ============================================================
   Shadowrocket 小火箭节点订阅站 · 设计系统
   风格：浅色蓝紫渐变 / 大圆角卡片 / 柔光投影 / 微动效
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root{
  --blue-50:#eff6ff; --blue-100:#dbeafe; --blue-200:#bfdbfe;
  --blue-500:#3b82f6; --blue-600:#2563eb; --blue-700:#1d4ed8; --blue-800:#1e40af;
  --indigo-100:#e0e7ff; --indigo-600:#4f46e5;
  --purple-50:#faf5ff; --purple-100:#f3e8ff; --purple-500:#a855f7;
  --purple-600:#9333ea; --purple-700:#7e22ce;
  --green-500:#22c55e; --green-600:#16a34a;
  --amber-400:#fbbf24; --amber-500:#f59e0b;
  --rose-500:#f43f5e; --teal-500:#14b8a6;
  --ink-900:#111827; --ink-800:#1f2937; --ink-700:#374151;
  --ink-600:#4b5563; --ink-500:#6b7280; --ink-400:#9ca3af;
  --gray-50:#f9fafb; --gray-100:#f3f4f6; --gray-200:#e5e7eb;
  --white:#ffffff;
  --grad-brand:linear-gradient(135deg,#2563eb 0%,#7c3aed 55%,#9333ea 100%);
  --grad-soft:linear-gradient(135deg,#f8fafc 0%,#eff6ff 45%,#f5f3ff 100%);
  --grad-warm:linear-gradient(135deg,#fb923c 0%,#ec4899 50%,#9333ea 100%);
  --radius-lg:16px; --radius-xl:20px; --radius-2xl:24px; --radius-3xl:28px;
  --shadow-sm:0 2px 8px rgba(15,23,42,.06);
  --shadow-md:0 8px 24px -6px rgba(15,23,42,.10),0 2px 6px -2px rgba(15,23,42,.06);
  --shadow-lg:0 18px 40px -12px rgba(15,23,42,.14),0 6px 14px -6px rgba(15,23,42,.08);
  --shadow-blue:0 22px 48px -14px rgba(37,99,235,.35);
  --header-h:64px;
}

/* ---------- 基础重置 ---------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink-700);
  background:var(--white);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
section{scroll-margin-top:calc(var(--header-h) + 16px)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media(max-width:640px){.container{padding:0 18px}}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 30px;border-radius:12px;font-size:15px;font-weight:600;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease;
  white-space:nowrap;will-change:transform;
}
.btn-primary{background:var(--blue-600);color:#fff;box-shadow:0 10px 24px -8px rgba(37,99,235,.5)}
.btn-primary:hover{background:var(--blue-700);transform:translateY(-2px) scale(1.03);box-shadow:0 16px 32px -8px rgba(37,99,235,.55)}
.btn-gradient{background:var(--grad-brand);color:#fff;box-shadow:0 12px 28px -8px rgba(124,58,237,.5)}
.btn-gradient:hover{transform:translateY(-2px) scale(1.03);box-shadow:0 20px 40px -10px rgba(124,58,237,.55)}
.btn-warm{background:var(--grad-warm);color:#fff;box-shadow:0 12px 28px -8px rgba(236,72,153,.45)}
.btn-warm:hover{transform:translateY(-2px) scale(1.03)}
.btn-outline{border:2px solid var(--blue-600);color:var(--blue-600);background:transparent}
.btn-outline:hover{background:var(--blue-600);color:#fff;transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--blue-600)}
.btn-white:hover{background:var(--blue-50);transform:translateY(-2px) scale(1.03)}
.btn-ghost-white{border:2px solid rgba(255,255,255,.7);color:#fff}
.btn-ghost-white:hover{background:#fff;color:var(--blue-600);transform:translateY(-2px)}
.btn-sm{padding:9px 22px;font-size:14px;border-radius:10px}
@media(max-width:640px){.btn{width:100%;padding:14px 24px}}

/* ---------- 区块标题 ---------- */
.sec{padding:88px 0}
.sec.alt{background:var(--gray-50)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 56px}
.sec-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--blue-100);color:var(--blue-800);
  padding:7px 18px;border-radius:999px;font-size:13.5px;font-weight:600;margin-bottom:20px;
}
.sec-badge.purple{background:var(--purple-100);color:var(--purple-700)}
.sec-badge svg{width:16px;height:16px}
.sec-head h2{font-size:clamp(27px,3.6vw,40px);font-weight:800;color:var(--ink-900);line-height:1.3;margin-bottom:16px}
.grad-text{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-head p{font-size:16.5px;color:var(--ink-500);line-height:1.8}

/* 网格底纹 */
.grid-pattern{
  background-image:
    linear-gradient(rgba(37,99,235,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(37,99,235,.07) 1px,transparent 1px);
  background-size:42px 42px;
}

/* ============================================================
   顶部导航
   ============================================================ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--blue-100);
  transition:box-shadow .3s ease;
}
.site-header.scrolled{box-shadow:0 6px 24px -10px rgba(37,99,235,.25)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--ink-900)}
.brand img{width:34px;height:34px;border-radius:9px;box-shadow:0 4px 10px -2px rgba(37,99,235,.4)}
.brand small{font-size:12px;font-weight:500;color:var(--ink-400);letter-spacing:.5px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a:not(.btn){font-size:14.5px;font-weight:500;color:var(--ink-700);transition:color .2s}
.nav-links a:not(.btn):hover{color:var(--blue-600)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;color:var(--ink-700)}
.nav-toggle:hover{background:var(--blue-50)}
.nav-toggle svg{width:24px;height:24px}
.mobile-menu{
  display:none;flex-direction:column;padding:10px 24px 20px;background:#fff;border-top:1px solid var(--blue-100);
}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:13px 4px;font-size:15px;font-weight:500;color:var(--ink-700);border-bottom:1px solid var(--gray-100)}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu .btn{margin-top:12px}
@media(max-width:900px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
}

/* ============================================================
   Hero
   ============================================================ */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  padding:calc(var(--header-h) + 56px) 0 72px;overflow:hidden;
  background:linear-gradient(135deg,#eff6ff 0%,#eef2ff 45%,#faf5ff 100%);
}
.hero-bg-pattern{position:absolute;inset:0;opacity:.8}
.hero-blob{position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none}
.hero-blob.b1{width:420px;height:420px;background:rgba(59,130,246,.22);top:-120px;left:-100px;animation:drift 14s ease-in-out infinite}
.hero-blob.b2{width:380px;height:380px;background:rgba(168,85,247,.20);bottom:-140px;right:-80px;animation:drift 18s ease-in-out infinite reverse}
.hero-blob.b3{width:240px;height:240px;background:rgba(14,165,233,.14);top:30%;right:12%;animation:drift 16s ease-in-out infinite}
.float-logo{position:absolute;border-radius:14px;opacity:.16;animation:pulseFloat 5s ease-in-out infinite;pointer-events:none}
.float-logo.l1{width:64px;height:64px;top:14%;left:12%}
.float-logo.l2{width:46px;height:46px;top:26%;right:16%;animation-delay:1.2s}
.float-logo.l3{width:76px;height:76px;bottom:20%;left:20%;animation-delay:2s}
.float-logo.l4{width:52px;height:52px;bottom:30%;right:10%;animation-delay:.6s}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:880px;margin:0 auto}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.85);
  border:1px solid var(--blue-200);color:var(--blue-700);
  padding:8px 20px;border-radius:999px;font-size:13.5px;font-weight:600;margin-bottom:26px;
  box-shadow:var(--shadow-sm);
}
.hero h1{
  font-size:clamp(34px,5.6vw,64px);font-weight:800;line-height:1.22;color:var(--ink-900);
  letter-spacing:-.5px;margin-bottom:22px;
}
.hero-sub{font-size:clamp(15.5px,1.6vw,19px);color:var(--ink-600);max-width:680px;margin:0 auto 34px;line-height:1.85}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:26px}
.hero-trust{display:inline-flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-600)}
.hero-trust .stars{color:var(--amber-400);letter-spacing:2px;font-size:15px}
.hero-trust b{color:var(--ink-900)}
.hero-media{position:relative;max-width:860px;margin:52px auto 0}
.hero-media img{
  width:100%;border-radius:var(--radius-3xl);
  box-shadow:0 40px 90px -30px rgba(30,58,138,.45);
  border:6px solid #fff;
}
.hero-chip{
  position:absolute;background:rgba(255,255,255,.95);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-radius:16px;padding:12px 18px;box-shadow:var(--shadow-lg);
  display:flex;align-items:center;gap:10px;font-size:13.5px;font-weight:600;color:var(--ink-800);
}
.hero-chip .dot{width:9px;height:9px;border-radius:50%;background:var(--green-500);box-shadow:0 0 0 4px rgba(34,197,94,.18)}
.hero-chip small{display:block;font-weight:500;color:var(--ink-500);font-size:11.5px}
.hero-chip.c1{left:-18px;top:22%;animation:floatY 5s ease-in-out infinite}
.hero-chip.c2{right:-18px;bottom:18%;animation:floatY 6s ease-in-out infinite .8s}
@media(max-width:900px){
  .hero{min-height:auto}
  .hero-chip{position:static;margin:14px auto 0}
  .hero-chip.c2{margin-top:12px}
  .hero-media{margin-top:36px}
}

/* ============================================================
   套餐定价
   ============================================================ */
.pricing{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#f8fafc 0%,#eff6ff 50%,#e0e7ff 100%);
}
.pricing .grid-pattern{position:absolute;inset:0;opacity:.5}
.pricing-blob{position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none}
.pricing-blob.p1{width:380px;height:380px;background:rgba(96,165,250,.28);top:-120px;left:18%;animation:pulseFloat 7s ease-in-out infinite}
.pricing-blob.p2{width:380px;height:380px;background:rgba(192,132,252,.25);bottom:-140px;right:18%;animation:pulseFloat 8s ease-in-out infinite 1s}
.plans{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch}
.plan{
  position:relative;background:#fff;border-radius:var(--radius-3xl);
  padding:44px 32px 34px;box-shadow:var(--shadow-md);
  transition:transform .45s cubic-bezier(.2,.8,.2,1),box-shadow .45s ease;
  display:flex;flex-direction:column;
}
.plan:hover{transform:translateY(-12px);box-shadow:0 30px 60px -18px rgba(37,99,235,.28)}
.plan.featured{
  border:3px solid rgba(37,99,235,.55);
  box-shadow:0 28px 60px -18px rgba(37,99,235,.35);
  transform:scale(1.04);z-index:2;
}
.plan.featured:hover{transform:scale(1.04) translateY(-12px)}
.plan-tag{
  position:absolute;top:-15px;left:28px;
  display:inline-flex;align-items:center;gap:6px;
  color:#fff;font-size:12px;font-weight:700;padding:7px 16px;border-radius:999px;box-shadow:var(--shadow-md);
}
.plan-tag.t1{background:linear-gradient(135deg,#3b82f6,#2563eb)}
.plan-tag.t2{background:linear-gradient(135deg,#a855f7,#9333ea)}
.plan-tag.t3{background:var(--grad-warm);padding:8px 20px;font-size:13px}
.plan-tag.t3{left:50%;transform:translateX(-50%)}
.plan.featured .plan-tag.t3{top:-18px}
.plan-tag svg{width:15px;height:15px}
.plan h3{text-align:center;font-size:21px;font-weight:800;color:var(--ink-900);margin-bottom:6px}
.plan .desc{text-align:center;font-size:13.5px;color:var(--ink-500);margin-bottom:22px}
.price{text-align:center;margin-bottom:24px}
.price .sym{font-size:22px;font-weight:700;color:var(--ink-900);vertical-align:top;margin-right:2px}
.price .num{font-size:46px;font-weight:800;color:var(--ink-900);line-height:1}
.price .per{font-size:15px;color:var(--ink-500);margin-left:3px}
.price .year{display:block;margin-top:8px;font-size:13px;color:var(--ink-400)}
.plan .btn{margin-bottom:26px}
.plan-feats{display:flex;flex-direction:column;gap:14px}
.plan-feats li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-700)}
.ck{
  flex-shrink:0;width:21px;height:21px;border-radius:50%;background:#dcfce7;
  display:inline-flex;align-items:center;justify-content:center;margin-top:1px;
}
.ck svg{width:12px;height:12px;stroke:var(--green-600);stroke-width:3;fill:none}
.plan-note{
  margin-top:20px;text-align:center;background:linear-gradient(135deg,var(--blue-50),var(--purple-50));
  border:1px solid var(--blue-100);border-radius:14px;padding:13px 12px;
}
.plan-note b{display:block;font-size:13.5px;color:var(--blue-700)}
.plan-note span{font-size:12.5px;color:var(--blue-600)}
@media(max-width:960px){
  .plans{grid-template-columns:1fr;max-width:440px;margin:0 auto}
  .plan.featured{transform:none;order:-1}
  .plan.featured:hover{transform:translateY(-12px)}
}

/* 套餐保障卡 */
.guarantee{
  position:relative;margin-top:56px;background:#fff;border-radius:var(--radius-3xl);
  box-shadow:var(--shadow-lg);padding:48px 44px;border:1px solid var(--gray-100);
}
.guarantee h3{text-align:center;font-size:25px;font-weight:800;color:var(--ink-900);margin-bottom:8px}
.guarantee>.sub{text-align:center;color:var(--ink-500);font-size:15px;margin-bottom:38px}
.guarantee-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.g-item{text-align:center}
.g-ico{
  width:64px;height:64px;border-radius:18px;margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;color:#fff;
  transition:transform .3s ease;
}
.g-item:hover .g-ico{transform:scale(1.12) rotate(-4deg)}
.g-ico svg{width:30px;height:30px}
.g-ico.c1{background:linear-gradient(135deg,#3b82f6,#2563eb)}
.g-ico.c2{background:linear-gradient(135deg,#22c55e,#16a34a)}
.g-ico.c3{background:linear-gradient(135deg,#a855f7,#9333ea)}
.g-ico.c4{background:linear-gradient(135deg,#f97316,#ef4444)}
.g-item h4{font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:5px}
.g-item p{font-size:13.5px;color:var(--ink-500)}
@media(max-width:760px){.guarantee-grid{grid-template-columns:repeat(2,1fr);gap:30px 18px}.guarantee{padding:38px 24px}}

/* 渐变疑问条 */
.ask-band{
  position:relative;margin-top:44px;border-radius:var(--radius-3xl);
  background:var(--grad-brand);padding:44px 32px;text-align:center;color:#fff;
  overflow:hidden;box-shadow:var(--shadow-blue);
}
.ask-band::before,.ask-band::after{content:"";position:absolute;border-radius:50%;filter:blur(40px);opacity:.5}
.ask-band::before{width:220px;height:220px;background:rgba(255,255,255,.25);top:-90px;left:-60px}
.ask-band::after{width:260px;height:260px;background:rgba(255,255,255,.18);bottom:-120px;right:-60px}
.ask-band h3{position:relative;font-size:25px;font-weight:800;margin-bottom:10px}
.ask-band p{position:relative;color:#dbeafe;font-size:15px;margin-bottom:26px;max-width:560px;margin-left:auto;margin-right:auto}
.ask-band .actions{position:relative;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ============================================================
   什么是 Shadowrocket
   ============================================================ */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.about-points{display:flex;flex-direction:column;gap:30px}
.about-point{display:flex;gap:18px}
.about-ico{
  flex-shrink:0;width:52px;height:52px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
}
.about-ico svg{width:26px;height:26px}
.about-ico.i1{background:var(--blue-100);color:var(--blue-600)}
.about-ico.i2{background:var(--purple-100);color:var(--purple-600)}
.about-ico.i3{background:#dcfce7;color:var(--green-600)}
.about-point h3{font-size:19px;font-weight:700;color:var(--ink-900);margin-bottom:6px}
.about-point p{font-size:14.5px;color:var(--ink-500)}
.about-visual{position:relative}
.about-visual .ring{
  background:var(--grad-brand);border-radius:32px;padding:6px;
  box-shadow:var(--shadow-blue);transform:rotate(2deg);transition:transform .5s ease;
}
.about-visual:hover .ring{transform:rotate(0)}
.about-visual img{border-radius:27px;width:100%}
.visual-card{
  position:absolute;background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);
  padding:12px 18px;font-size:13.5px;font-weight:700;color:var(--ink-900);
  display:flex;align-items:center;gap:9px;
}
.visual-card small{display:block;font-size:11.5px;font-weight:500;color:var(--ink-500)}
.visual-card.v1{left:-26px;top:12%;animation:floatY 5.5s ease-in-out infinite}
.visual-card.v2{right:-20px;bottom:14%;animation:floatY 6.5s ease-in-out infinite 1s}
.visual-card .ico-circle{width:34px;height:34px;border-radius:10px;background:var(--blue-100);color:var(--blue-600);display:flex;align-items:center;justify-content:center}
.visual-card .ico-circle svg{width:18px;height:18px}
.why-card{
  margin-top:56px;border-radius:var(--radius-3xl);padding:44px 40px;color:#fff;
  background:var(--grad-brand);position:relative;overflow:hidden;
}
.why-card::after{content:"";position:absolute;width:340px;height:340px;border-radius:50%;
  background:rgba(255,255,255,.12);filter:blur(50px);right:-100px;top:-120px}
.why-card h3{position:relative;font-size:23px;font-weight:800;margin-bottom:28px;text-align:center}
.why-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.why-grid li{display:flex;align-items:center;gap:11px;font-size:14.5px;font-weight:500;color:#eaf0ff}
.why-grid svg{flex-shrink:0;width:21px;height:21px;color:#bfdbfe}
@media(max-width:960px){
  .about-grid{grid-template-columns:1fr;gap:44px}
  .visual-card{position:static;margin:14px auto 0}
  .why-grid{grid-template-columns:1fr 1fr;gap:18px}
}
@media(max-width:560px){.why-grid{grid-template-columns:1fr}}

/* ============================================================
   理由 / 功能卡片网格
   ============================================================ */
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.reason-card,.feat-card{
  background:#fff;border-radius:var(--radius-2xl);padding:34px 30px;
  box-shadow:var(--shadow-sm);border:1px solid var(--gray-100);
  transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
}
.reason-card:hover,.feat-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--blue-200)}
.reason-ico{width:48px;height:48px;border-radius:13px;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.reason-ico svg{width:25px;height:25px}
.reason-card h3,.feat-card h3{font-size:18.5px;font-weight:700;color:var(--ink-900);margin-bottom:9px}
.reason-card p,.feat-card p{font-size:14px;color:var(--ink-500);line-height:1.8}

.feat-card{background:var(--gray-50);border-color:transparent}
.feat-card:hover{background:#fff;border-color:var(--blue-200)}
.feat-ico{margin-bottom:20px;transition:transform .35s ease}
.feat-card:hover .feat-ico{transform:scale(1.12)}
.feat-ico svg{width:46px;height:46px}
@media(max-width:900px){.cards-grid{grid-template-columns:1fr 1fr;gap:18px}}
@media(max-width:620px){.cards-grid{grid-template-columns:1fr}}

/* ============================================================
   多端支持
   ============================================================ */
.platforms{background:linear-gradient(135deg,#eff6ff,#f5f3ff);border-radius:var(--radius-3xl);padding:52px 44px}
.platform-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:36px 0 26px}
.platform{
  background:#fff;border-radius:999px;padding:20px 14px;text-align:center;
  box-shadow:var(--shadow-sm);border:2px solid transparent;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.platform:hover{transform:translateY(-5px);border-color:var(--blue-500);box-shadow:var(--shadow-blue)}
.platform svg{width:28px;height:28px;color:var(--blue-600);margin:0 auto 8px}
.platform b{display:block;font-size:15px;font-weight:700;color:var(--ink-900)}
.platform span{font-size:12px;color:var(--ink-500)}
.platforms .tip{text-align:center;font-size:13.5px;color:var(--ink-500)}
@media(max-width:760px){.platform-grid{grid-template-columns:1fr 1fr}.platforms{padding:38px 22px}}

/* ============================================================
   使用步骤
   ============================================================ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-bottom:48px}
.step{text-align:center;position:relative}
.step:not(:last-child)::after{
  content:"";position:absolute;top:40px;right:calc(-15px - 12px);width:30px;height:2px;
  background:repeating-linear-gradient(90deg,var(--blue-300,#93c5fd) 0 6px,transparent 6px 12px);
}
.step-circle{
  width:84px;height:84px;border-radius:50%;background:var(--gray-100);margin:0 auto 22px;
  display:flex;align-items:center;justify-content:center;position:relative;
  transition:background .3s ease,transform .3s ease;
}
.step:hover .step-circle{background:var(--blue-50);transform:scale(1.06)}
.step-circle svg{width:38px;height:38px}
.step-num{
  position:absolute;top:-6px;right:-6px;width:28px;height:28px;border-radius:50%;
  background:var(--grad-brand);color:#fff;font-size:13px;font-weight:800;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);
}
.step h3{font-size:19px;font-weight:700;color:var(--ink-900);margin-bottom:9px}
.step p{font-size:14px;color:var(--ink-500);max-width:300px;margin:0 auto}
.guide-card{
  max-width:820px;margin:0 auto 44px;background:#fff;border:1px solid var(--blue-100);
  border-radius:var(--radius-2xl);box-shadow:var(--shadow-md);padding:36px 40px;
}
.guide-card h3{font-size:20px;font-weight:800;color:var(--ink-900);text-align:center;margin-bottom:8px}
.guide-card>p{text-align:center;font-size:13.5px;color:var(--ink-500);margin-bottom:26px}
.guide-list{display:flex;flex-direction:column;gap:0;counter-reset:g}
.guide-list li{
  display:flex;gap:16px;padding:16px 0;border-bottom:1px dashed var(--gray-200);
  font-size:14.5px;color:var(--ink-700);counter-increment:g;
}
.guide-list li:last-child{border-bottom:none}
.guide-list li::before{
  content:counter(g);flex-shrink:0;width:30px;height:30px;border-radius:9px;
  background:var(--blue-100);color:var(--blue-700);font-weight:800;font-size:14px;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.guide-list b{color:var(--ink-900)}
@media(max-width:900px){
  .steps{grid-template-columns:1fr;gap:38px}
  .step:not(:last-child)::after{display:none}
  .guide-card{padding:30px 22px}
}

/* ============================================================
   用户评价
   ============================================================ */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review{
  background:#fff;border-radius:var(--radius-2xl);padding:28px;
  box-shadow:var(--shadow-sm);border:1px solid var(--gray-100);
  transition:transform .3s ease,box-shadow .3s ease;
}
.review:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.review-head{display:flex;align-items:center;gap:13px;margin-bottom:14px}
.avatar{
  width:46px;height:46px;border-radius:50%;color:#fff;font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#3b82f6,#7c3aed);
}
.review-head b{display:block;font-size:15px;color:var(--ink-900)}
.review-head span{font-size:12.5px;color:var(--ink-500)}
.stars-row{color:var(--amber-400);letter-spacing:2px;font-size:13px;margin-bottom:10px}
.review p{font-size:14px;color:var(--ink-600);line-height:1.85}
.review-stats{
  margin-top:48px;background:#fff;border-radius:var(--radius-2xl);box-shadow:var(--shadow-lg);
  display:grid;grid-template-columns:repeat(4,1fr);padding:40px 20px;
}
.review-stats div{text-align:center;border-right:1px solid var(--gray-200)}
.review-stats div:last-child{border-right:none}
.review-stats b{display:block;font-size:32px;font-weight:800;margin-bottom:4px}
.review-stats span{font-size:13.5px;color:var(--ink-500)}
.review-stats .c1{color:var(--blue-600)}.review-stats .c2{color:var(--green-600)}
.review-stats .c3{color:var(--purple-600)}.review-stats .c4{color:var(--rose-500)}
@media(max-width:900px){.reviews{grid-template-columns:1fr 1fr;gap:16px}}
@media(max-width:620px){
  .reviews{grid-template-columns:1fr}
  .review-stats{grid-template-columns:1fr 1fr;gap:26px 10px;padding:30px 16px}
  .review-stats div:nth-child(2){border-right:none}
  .review-stats div:nth-child(1),.review-stats div:nth-child(2){padding-bottom:22px;border-bottom:1px solid var(--gray-200)}
}

/* ============================================================
   FAQ
   ============================================================ */
.faq-list{max-width:840px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{border:1px solid var(--gray-200);border-radius:16px;overflow:hidden;background:#fff;transition:border-color .25s ease,box-shadow .25s ease}
.faq-item.open{border-color:var(--blue-200);box-shadow:var(--shadow-md)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 24px;background:var(--gray-50);font-size:16px;font-weight:700;color:var(--ink-900);
  text-align:left;transition:background .25s ease;
}
.faq-q:hover{background:var(--blue-50)}
.faq-q svg{flex-shrink:0;width:20px;height:20px;color:var(--ink-500);transition:transform .3s ease}
.faq-item.open .faq-q svg{transform:rotate(180deg);color:var(--blue-600)}
.faq-a{overflow:hidden;max-height:0;padding:0 24px;transition:max-height .38s ease,padding .3s ease}
.faq-a p{font-size:14.5px;color:var(--ink-600);line-height:1.9;padding-bottom:4px}
.faq-more{text-align:center;margin-top:38px;color:var(--ink-500);font-size:14.5px}
.faq-more .btn{margin-top:14px}

/* ============================================================
   最终 CTA
   ============================================================ */
.final-cta{
  position:relative;overflow:hidden;border-radius:var(--radius-3xl);
  background:linear-gradient(135deg,#1e3a8a 0%,#4338ca 50%,#7e22ce 100%);
  padding:72px 32px;text-align:center;color:#fff;
}
.final-cta::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:42px 42px}
.final-cta .inner{position:relative;max-width:640px;margin:0 auto}
.final-cta h2{font-size:clamp(27px,3.6vw,40px);font-weight:800;margin-bottom:14px}
.final-cta p{color:#c7d2fe;font-size:16px;margin-bottom:32px}
.final-cta .actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:22px}
.copy-tip{
  display:none;margin-top:16px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);
  border-radius:999px;padding:9px 22px;font-size:13.5px;color:#e0e7ff;
}
.copy-tip.show{display:inline-block;animation:fadeUp .4s ease}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,#0f172a 0%,#1e293b 50%,#0f172a 100%);
  padding:72px 0 0;
}
.site-footer::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:42px 42px}
.footer-blob{position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none}
.footer-blob.f1{width:360px;height:360px;background:rgba(37,99,235,.28);top:-140px;left:-80px}
.footer-blob.f2{width:360px;height:360px;background:rgba(147,51,234,.25);bottom:-160px;right:-80px}
.footer-grid{position:relative;display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:52px;padding-bottom:48px}
.footer-brand .brand{color:#fff;margin-bottom:18px}
.footer-brand .brand small{color:#94a3b8}
.footer-brand p{font-size:14px;color:#cbd5e1;line-height:1.9;margin-bottom:24px;max-width:360px}
.footer-trust{display:flex;flex-direction:column;gap:12px}
.footer-trust li{display:flex;align-items:center;gap:10px;font-size:13.5px;color:#cbd5e1}
.footer-trust svg{width:19px;height:19px}
.footer-trust .t-blue{color:#60a5fa}.footer-trust .t-green{color:#4ade80}
.site-footer h4{font-size:16px;font-weight:700;margin-bottom:20px}
.footer-links{display:flex;flex-direction:column;gap:13px}
.footer-links a{font-size:14px;color:#cbd5e1;transition:color .2s,padding-left .2s}
.footer-links a:hover{color:#93c5fd;padding-left:5px}
.footer-buy{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:20px;padding:26px}
.footer-buy h4{margin-bottom:8px}
.footer-buy p{font-size:13px;color:#bfdbfe;margin-bottom:18px;line-height:1.8}
.footer-bottom{position:relative;border-top:1px solid rgba(255,255,255,.1);padding:22px 0}
.footer-bottom .row{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:12.5px;color:#94a3b8}
.footer-keywords{position:relative;border-top:1px solid rgba(255,255,255,.08);padding:18px 0;font-size:12px;color:#7c8aa5;line-height:2}
.footer-keywords b{color:#94a3b8;font-weight:600}
@media(max-width:860px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}}

/* ============================================================
   动画
   ============================================================ */
@keyframes drift{
  0%,100%{transform:translate(0,0) scale(1)}
  50%{transform:translate(40px,30px) scale(1.12)}
}
@keyframes pulseFloat{
  0%,100%{opacity:.13;transform:scale(1)}
  50%{opacity:.25;transform:scale(1.08)}
}
@keyframes floatY{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-12px)}
}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(26px)}
  to{opacity:1;transform:translateY(0)}
}
.reveal{opacity:0}
.reveal.in{animation:fadeUp .7s cubic-bezier(.2,.8,.2,1) forwards}
.reveal.d1{animation-delay:.08s}.reveal.d2{animation-delay:.16s}.reveal.d3{animation-delay:.24s}
.reveal.d4{animation-delay:.32s}.reveal.d5{animation-delay:.4s}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1}
}