/* ============================================================
   SuperParter — 青春靓丽绿 × 橘黄
   ============================================================ */
:root {
  --green-600: #2e9e57;
  --green-500: #4cbb6e;
  --green-400: #6fd08e;
  --green-300: #a3e3b8;
  --green-100: #e3f4e7;
  --green-50: #f2faf4;

  --orange-600: #f26b1d;
  --orange-500: #ff9233;
  --orange-400: #ffad5c;
  --orange-300: #ffc98a;
  --orange-100: #fff0df;
  --yellow-400: #ffd24a;

  --ink-900: #102a1e;
  --ink-600: #3c5a4b;
  --ink-400: #6d887b;

  --grad-main: linear-gradient(135deg, #45b763 0%, #4cbb6e 45%, #66c37f 100%);
  --grad-orange: linear-gradient(135deg, #ffb03a 0%, #ff9233 50%, #f26b1d 100%);
  --grad-hero: linear-gradient(160deg, #f4fbf6 0%, #eef8f1 40%, #fff6ea 100%);

  --shadow-sm: 0 2px 10px rgba(16, 42, 30, .06);
  --shadow-md: 0 8px 30px rgba(16, 42, 30, .10);
  --shadow-lg: 0 20px 60px rgba(16, 42, 30, .14);
  --shadow-orange: 0 10px 30px rgba(255, 146, 51, .35);

  --radius: 18px;
  --radius-lg: 26px;
  --max-w: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink-900);
  background: #fff;
  line-height: 1.65;
  overflow-x: hidden;
}
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 880px; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
section { padding: 96px 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  transition: all .25s ease;
  cursor: pointer;
  border: 2px solid transparent;
}
.btn-lg { padding: 15px 34px; font-size: 17px; }
.btn-block { display: block; text-align: center; width: 100%; }
.btn-primary { background: var(--grad-main); color: #fff; box-shadow: 0 8px 24px rgba(76, 187, 110, .35); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(76, 187, 110, .45); }
.btn-ghost { color: var(--ink-600); }
.btn-ghost:hover { color: var(--green-600); }
.btn-outline { border-color: var(--green-500); color: var(--green-600); background: transparent; }
.btn-outline:hover { background: var(--green-500); color: #fff; transform: translateY(-3px); }
.btn-outline-dark { border-color: #fff; color: #fff; }
.btn-outline-dark:hover { background: rgba(255,255,255,.15); transform: translateY(-3px); }
.btn-white { background: #fff; color: var(--green-600); box-shadow: 0 8px 24px rgba(0,0,0,.15); }
.btn-white:hover { transform: translateY(-3px); }

/* ---------- 导航 ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: all .3s ease; padding: 18px 0;
}
.navbar.scrolled {
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-sm);
  padding: 10px 0;
}
.nav-container {
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 900; }
.logo-icon {
  width: 36px; height: 36px; border-radius: 11px;
  background: var(--grad-main);
  display: grid; place-items: center;
  color: #fff; font-size: 20px;
  box-shadow: 0 6px 16px rgba(76,187,110,.4);
}
.logo-icon img {
  width: 100%; height: 100%; object-fit: contain;
  border-radius: inherit; display: block;
}
.logo-text { letter-spacing: -.3px; }
.logo-accent {
  background: var(--grad-orange);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-menu { display: flex; gap: 8px; }
.nav-menu a {  padding: 8px 14px; border-radius: 999px; font-weight: 500; color: var(--ink-600);
  font-size: 15px; transition: all .2s;
}
.nav-menu a:hover { color: var(--green-600); background: var(--green-100); }
.nav-actions { display: flex; align-items: center; gap: 10px; margin-left: 8px; flex-shrink: 0; }
.nav-youth-logo-wrap {
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  padding-left: 16px; margin-left: 4px;
  border-left: 1px solid rgba(16, 42, 30, .1);
  line-height: 0;
}
.nav-youth-logo {
  height: 44px; width: auto;
  display: block;
  object-fit: contain;
  object-position: center right;
  filter: drop-shadow(0 1px 2px rgba(16, 42, 30, .12));
  transition: transform .25s ease, filter .25s ease;
}
.nav-youth-logo-wrap:hover .nav-youth-logo {
  transform: scale(1.03);
  filter: drop-shadow(0 2px 6px rgba(16, 42, 30, .12));
}
#loginBtn, #signupBtn { display: none !important; }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px;
}
.nav-toggle span { width: 24px; height: 3px; border-radius: 3px; background: var(--ink-900); transition: all .3s; }

/* ---------- 导航下拉菜单 ---------- */
.nav-dropdown { position: relative; }
.nav-drop-trigger { cursor: pointer; user-select: none; }
.nav-drop-menu {
  display: none; position: absolute; top: calc(100% + 8px); left: 50%;
  transform: translateX(-50%); min-width: 160px;
  background: #fff; border: 1px solid var(--green-200, #b7e0c2);
  border-radius: 12px; box-shadow: 0 8px 24px rgba(16,42,30,.12);
  padding: 6px; z-index: 1000;
}
.nav-dropdown:hover .nav-drop-menu { display: block; }
.nav-drop-item {
  display: block; padding: 9px 14px; border-radius: 8px;
  font-size: 14px; font-weight: 500; color: var(--ink-600);
  text-decoration: none; transition: all .15s;
}
.nav-drop-item:hover { background: var(--green-100, #e3f4e7); color: var(--green-700, #256b3e); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 160px 0 110px; background: var(--grad-hero); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .55; }
.blob-1 { width: 480px; height: 480px; background: #a3e3b8; top: -140px; right: -100px; animation: float 9s ease-in-out infinite; }
.blob-2 { width: 400px; height: 400px; background: #ffc98a; bottom: -140px; left: -120px; animation: float 11s ease-in-out infinite reverse; }
.blob-3 { width: 220px; height: 220px; background: #ffd24a; top: 40%; left: 55%; opacity: .35; animation: float 8s ease-in-out infinite; }
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}
.hero-inner { position: relative; z-index: 2; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1.5px solid var(--green-300);
  color: var(--green-600); font-size: 14px; font-weight: 700;
  padding: 8px 18px; border-radius: 999px; box-shadow: var(--shadow-sm);
  margin-bottom: 28px;
}
.pulse-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--orange-500); animation: pulse 1.6s infinite; }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,146,51,.5); }
  50% { box-shadow: 0 0 0 8px rgba(255,146,51,0); }
}
.hero-title { font-size: clamp(34px, 5.4vw, 62px); font-weight: 900; letter-spacing: -1.5px; line-height: 1.18; margin-bottom: 22px; }
.grad-text {
  background: linear-gradient(120deg, var(--green-500) 0%, #2e9e57 40%, var(--orange-500) 90%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc { font-size: 18px; color: var(--ink-600); max-width: 720px; margin: 0 auto 36px; }
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 64px; }
.hero-stats {
  display: flex; justify-content: center; gap: 20px; flex-wrap: wrap;
}
.stat {
  background: rgba(255,255,255,.85); backdrop-filter: blur(8px);
  border: 1px solid rgba(76,187,110,.2);
  border-radius: var(--radius); padding: 22px 34px;
  box-shadow: var(--shadow-sm); min-width: 150px;
}
.stat-num { font-size: 30px; font-weight: 900; color: var(--green-600); }
.stat-num span { font-size: 15px; font-weight: 700; color: var(--orange-500); }
.stat-label { font-size: 13px; color: var(--ink-400); margin-top: 2px; }

/* ---------- 信任带 ---------- */
.trust-band { background: #fff; padding: 36px 0; border-bottom: 1px solid var(--green-100); }
.trust-title { text-align: center; color: var(--ink-400); font-size: 13px; letter-spacing: 2px; margin-bottom: 22px; }
.trust-logos { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; }
.trust-logos span {
  font-size: 16px; font-weight: 700; color: var(--ink-600);
  background: var(--green-50); border: 1px solid var(--green-100);
  padding: 10px 22px; border-radius: 12px; opacity: .85;
}

/* ---------- Section 头 ---------- */
.section-head { text-align: center; margin-bottom: 56px; }
.section-tag {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 1px;
  color: var(--orange-600); background: var(--orange-100);
  padding: 6px 16px; border-radius: 999px; margin-bottom: 16px;
}
.section-title { font-size: clamp(28px, 3.6vw, 42px); font-weight: 900; letter-spacing: -.8px; margin-bottom: 14px; }
.section-sub { font-size: 16.5px; color: var(--ink-600); max-width: 640px; margin: 0 auto; }

/* ---------- 功能 ---------- */
.features { background: #fff; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.feature-card {
  background: #fff; border: 1.5px solid var(--green-100);
  border-radius: var(--radius-lg); padding: 34px 30px;
  transition: all .3s ease; position: relative; overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--grad-main); opacity: 0; transition: opacity .3s;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--green-300); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 58px; height: 58px; border-radius: 16px;
  display: grid; place-items: center; font-size: 26px; margin-bottom: 20px;
}
.icon-green { background: var(--green-100); }
.icon-orange { background: var(--orange-100); }
.feature-card h3 { font-size: 19px; font-weight: 800; margin-bottom: 10px; }
.feature-card p { color: var(--ink-600); font-size: 15px; }

/* ---------- 场景 ---------- */
.scenarios { background: linear-gradient(180deg, var(--green-50) 0%, #fff 100%); }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.scenario-card {
  background: #fff; border-radius: var(--radius-lg);
  padding: 34px 30px; border: 1.5px solid var(--green-100);
  transition: all .3s ease; position: relative;
}
.scenario-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--orange-300); }
.sc-num {
  font-size: 14px; font-weight: 900; color: #fff;
  background: var(--grad-orange); width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center; margin-bottom: 18px;
  box-shadow: var(--shadow-orange);
}
.scenario-card h3 { font-size: 19px; font-weight: 800; margin-bottom: 10px; }
.scenario-card p { color: var(--ink-600); font-size: 14.5px; margin-bottom: 16px; }
.sc-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.sc-tags span {
  font-size: 12.5px; font-weight: 600; color: var(--green-600);
  background: var(--green-50); border: 1px solid var(--green-100);
  padding: 4px 12px; border-radius: 999px;
}

/* ---------- 原理 ---------- */
.how { background: #fff; }
.how-steps { display: flex; align-items: stretch; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.how-step {
  flex: 1; min-width: 260px;
  background: var(--grad-hero); border: 1.5px solid var(--green-100);
  border-radius: var(--radius-lg); padding: 34px 28px; position: relative;
}
.step-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--grad-main); color: #fff; font-size: 20px; font-weight: 900;
  display: grid; place-items: center; margin-bottom: 18px;
  box-shadow: 0 8px 20px rgba(76,187,110,.4);
}
.how-step h3 { font-size: 19px; font-weight: 800; margin-bottom: 10px; }
.how-step p { color: var(--ink-600); font-size: 14.5px; }
.how-arrow { align-self: center; font-size: 28px; font-weight: 900; color: var(--orange-500); }

/* ---------- 对比 ---------- */
.compare { background: var(--green-50); }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.compare-col { border-radius: var(--radius-lg); padding: 40px 36px; }
.compare-old { background: #fff; border: 1.5px solid #f0dcdc; }
.compare-new { background: #fff; border: 2px solid transparent; background-clip: padding-box; position: relative; }
.compare-new::after {
  content: ""; position: absolute; inset: -2px; border-radius: var(--radius-lg);
  background: var(--grad-main); z-index: -1;
}
.compare-col h3 { font-size: 21px; font-weight: 900; margin-bottom: 22px; }
.compare-old h3 { color: var(--ink-400); }
.compare-new h3 { color: var(--orange-500); }
.compare-new li { color: #fff; } .compare-old li { color: var(--ink-600); } .compare-col li { padding: 10px 0; font-size: 15px; border-bottom: 1px dashed var(--green-100); }
.compare-col li:last-child { border-bottom: none; }

/* ---------- 价格 ---------- */
.pricing { background: #fff; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; align-items: stretch; }
.price-card {
  background: #fff; border: 1.5px solid var(--green-100);
  border-radius: var(--radius-lg); padding: 36px 30px;
  display: flex; flex-direction: column; transition: all .3s;
  position: relative;
}
.price-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.price-popular {
  border: 2px solid transparent;
  background: linear-gradient(#fff, #fff) padding-box, var(--grad-main) border-box;
  box-shadow: var(--shadow-md);
}
.price-flag {
  position: absolute; top: -15px; left: 50%; transform: translateX(-50%);
  background: var(--grad-orange); color: #fff; font-size: 13px; font-weight: 800;
  padding: 6px 18px; border-radius: 999px; white-space: nowrap;
  box-shadow: var(--shadow-orange);
}
.price-head h3 { font-size: 20px; font-weight: 900; margin-bottom: 6px; }
.price-head p { font-size: 13.5px; color: var(--ink-400); margin-bottom: 20px; min-height: 42px; }
.price-cost { margin-bottom: 24px; }
.price-num {
  font-size: 44px; font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.price-popular .price-num { background: var(--grad-orange); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.price-unit { color: var(--ink-400); font-size: 14px; margin-left: 4px; }
.price-features { flex-grow: 1; margin-bottom: 26px; }
.price-features li { padding: 8px 0; font-size: 14.5px; color: var(--ink-600); }
.pricing-note { text-align: center; margin-top: 34px; font-size: 13.5px; color: var(--ink-400); }

/* ---------- 口碑 ---------- */
.testimonials { background: linear-gradient(180deg, #fff 0%, var(--green-50) 100%); }
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.testimonial-card {
  background: #fff; border-radius: var(--radius-lg);
  padding: 34px 30px; border: 1.5px solid var(--green-100);
  display: flex; flex-direction: column; transition: all .3s;
}
.testimonial-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.t-quote { font-size: 52px; line-height: .6; font-weight: 900; color: var(--orange-400); margin-bottom: 16px; }
.testimonial-card p { color: var(--ink-600); font-size: 14.5px; flex-grow: 1; margin-bottom: 24px; }
.t-author { display: flex; align-items: center; gap: 12px; }
.t-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center; color: #fff; font-weight: 900; font-size: 17px;
}
.t-av-1 { background: var(--grad-main); }
.t-av-2 { background: var(--grad-orange); }
.t-av-3 { background: linear-gradient(135deg, #52c184, #4cbb6e); }
.t-name { font-weight: 800; font-size: 14.5px; }
.t-role { font-size: 12.5px; color: var(--ink-400); }

/* ---------- FAQ ---------- */
.faq { background: #fff; }
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  border: 1.5px solid var(--green-100); border-radius: 16px;
  background: var(--green-50); overflow: hidden; transition: all .3s;
}
.faq-item[open] { border-color: var(--green-300); box-shadow: var(--shadow-sm); }
.faq-item summary {
  cursor: pointer; font-weight: 700; font-size: 16px;
  padding: 20px 26px; list-style: none; position: relative;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-size: 24px; font-weight: 400; color: var(--green-500); transition: transform .3s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 26px 22px; color: var(--ink-600); font-size: 14.5px; }

/* ---------- CTA ---------- */
.cta { background: #fff; padding: 40px 0 110px; }
.cta-box {
  background: linear-gradient(135deg, var(--green-500) 0%, #2e9e57 55%, var(--orange-500) 130%);
  border-radius: 32px; padding: 70px 40px; text-align: center;
  color: #fff; position: relative; overflow: hidden;
  box-shadow: 0 30px 70px rgba(76,187,110,.4);
}
.cta-box::before, .cta-box::after {
  content: ""; position: absolute; border-radius: 50%; background: rgba(255,255,255,.12);
}
.cta-box::before { width: 260px; height: 260px; top: -90px; right: -60px; }
.cta-box::after { width: 180px; height: 180px; bottom: -70px; left: -40px; }
.cta-box h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 900; margin-bottom: 16px; position: relative; z-index: 1; }
.cta-box p { font-size: 16.5px; opacity: .92; max-width: 560px; margin: 0 auto 34px; position: relative; z-index: 1; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 1; }

/* ---------- Footer ---------- */
.footer { background: var(--ink-900); color: #b9cec2; padding: 70px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand .logo-text { color: #fff; }
.footer-brand p { font-size: 14px; margin-top: 14px; max-width: 300px; }
.footer-copy { color: #7d9a8b; font-size: 13px !important; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 800; margin-bottom: 18px; }
.footer-col a { display: block; padding: 6px 0; font-size: 14px; color: #b9cec2; transition: all .2s; }
.footer-col a:hover { color: var(--green-400); transform: translateX(3px); }

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) {
  .nav-youth-logo-wrap { padding-left: 12px; }
  .nav-youth-logo { height: 40px; }
}
@media (max-width: 1024px) {
  .feature-grid, .scenario-grid, .pricing-grid, .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  section { padding: 64px 0; }
  .nav-menu {
    position: fixed; top: 64px; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 20px 24px;
    box-shadow: var(--shadow-md); border-radius: 0 0 20px 20px;
    transform: translateY(-140%); transition: transform .35s ease; gap: 4px;
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-actions { display: flex; margin-left: auto; gap: 0; }
  .nav-youth-logo-wrap { padding-left: 0; margin-left: 0; border-left: none; }
  .nav-youth-logo { height: 34px; }
  .nav-toggle { display: flex; }
  .hero { padding: 120px 0 80px; }
  .feature-grid, .scenario-grid, .pricing-grid, .testimonial-grid, .compare-grid { grid-template-columns: 1fr; }
  .how-steps { flex-direction: column; }
  .how-arrow { transform: rotate(90deg); align-self: center; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { gap: 12px; }
  .stat { min-width: 130px; padding: 16px 20px; }
}

/* 滚动条 / 选中 */
::selection { background: var(--green-300); color: var(--ink-900); }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--green-50); }
::-webkit-scrollbar-thumb { background: var(--green-400); border-radius: 6px; }

/* ========== 登录/注册 弹窗 ========== */
.modal-mask {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(16, 42, 30, .45);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 1; transition: opacity .25s ease;
}
.modal-mask.hidden { display: none; }
.modal-box {
  width: 100%; max-width: 420px;
  background: #fff; border-radius: 24px;
  box-shadow: 0 30px 80px rgba(16,42,30,.35);
  padding: 36px 34px 30px; position: relative;
  animation: modalIn .3s ease;
  max-height: 92vh; overflow-y: auto;
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(24px) scale(.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-close {
  position: absolute; top: 14px; right: 16px;
  background: none; border: none; font-size: 20px;
  color: var(--ink-400); cursor: pointer; padding: 6px;
  border-radius: 50%; transition: all .2s;
}
.modal-close:hover { background: var(--green-50); color: var(--ink-900); }
.modal-brand { text-align: center; margin-bottom: 22px; }
.modal-brand .logo-icon {
  width: 52px; height: 52px; font-size: 26px;
  border-radius: 15px; margin: 0 auto 12px;
}
.modal-title { font-size: 26px; font-weight: 900; letter-spacing: -.5px; }
.modal-sub { font-size: 13px; color: var(--ink-400); margin-top: 4px; }

.auth-tabs {
  display: flex; background: var(--green-50); border-radius: 12px; padding: 4px; margin-bottom: 22px;
}
.auth-tab {
  flex: 1; padding: 10px; border: none; background: none;
  border-radius: 9px; font-size: 15px; font-weight: 700;
  color: var(--ink-400); cursor: pointer; transition: all .25s;
}
.auth-tab.active {
  background: #fff; color: var(--green-600);
  box-shadow: var(--shadow-sm);
}

.auth-form .form-group { margin-bottom: 16px; }
.auth-form label { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink-600); margin-bottom: 8px; }
.form-hint { font-weight: 400; color: var(--ink-400); font-size: 12.5px; }
.form-input {
  width: 100%; padding: 12px 14px;
  border: 1.5px solid #e2eee8; border-radius: 12px;
  font-size: 15px; color: var(--ink-900); outline: none;
  transition: all .25s; background: #fafdfb;
}
.form-input:focus {
  border-color: var(--green-500); background: #fff;
  box-shadow: 0 0 0 4px rgba(76,187,110,.12);
}
.form-input::placeholder { color: #b3c4bb; }
.code-row { display: flex; gap: 10px; }
.code-row .form-input { flex: 1; }
.btn-code {
  white-space: nowrap; padding: 12px 18px; font-size: 14px; flex-shrink: 0;
}
.btn-code:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.agree-row { display: flex; align-items: flex-start; gap: 8px; cursor: pointer; }
.agree-row input { margin-top: 3px; accent-color: var(--green-500); width: 16px; height: 16px; }
.agree-row span { font-size: 12.5px; color: var(--ink-400); font-weight: 400; }
.agree-row a { color: var(--green-600); }
.auth-perk {
  margin-top: 16px; text-align: center; font-size: 13px;
  color: var(--ink-600); background: var(--orange-100);
  padding: 10px 14px; border-radius: 12px;
}
.auth-perk strong { color: var(--orange-600); }

/* ========== 用户菜单（已登录） ========== */
.user-menu { position: relative; }
.user-avatar {
  display: flex; align-items: center; gap: 8px;
  background: none; border: none; cursor: pointer; padding: 4px 6px;
  border-radius: 999px; transition: all .2s;
}
.user-avatar:hover { background: var(--green-50); }
.avatar-circle {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--grad-main); color: #fff;
  display: grid; place-items: center; font-weight: 900; font-size: 14px;
  box-shadow: 0 4px 12px rgba(76,187,110,.35);
}
.avatar-name { font-size: 14px; font-weight: 700; color: var(--ink-900); max-width: 90px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.avatar-caret { font-size: 11px; color: var(--ink-400); }
.user-dropdown {
  position: absolute; right: 0; top: calc(100% + 10px);
  width: 280px; background: #fff; border-radius: 16px;
  box-shadow: 0 20px 50px rgba(16,42,30,.18);
  border: 1px solid var(--green-100); padding: 10px;
  animation: modalIn .2s ease; z-index: 200;
}
.user-dropdown.hidden { display: none; }
.ud-header {
  padding: 12px 14px 10px; border-bottom: 1px solid var(--green-50);
}
.ud-name { font-weight: 800; font-size: 15px; }
.ud-phone { font-size: 12.5px; color: var(--ink-400); margin-top: 2px; }
.ud-stats {
  display: flex; justify-content: space-between; gap: 6px;
  padding: 12px 14px; background: var(--green-50);
  border-radius: 12px; margin: 10px 4px;
}
.ud-stat { text-align: center; font-size: 11.5px; color: var(--ink-400); flex: 1; }
.ud-num { display: block; font-size: 17px; font-weight: 900; color: var(--green-600); }
.ud-item {
  display: block; width: 100%; text-align: left;
  padding: 11px 14px; border: none; background: none;
  border-radius: 10px; font-size: 14px; font-weight: 600;
  color: var(--ink-600); cursor: pointer; transition: all .2s;
}
.ud-item:hover { background: var(--green-50); color: var(--green-600); }
.ud-item-danger:hover { background: #fff0f0; color: #e5484d; }
.ud-link { text-decoration: none; }

@media (max-width: 480px) {
  .modal-box { padding: 30px 22px 24px; }
  .avatar-name { display: none; }
  .user-dropdown { width: 250px; }
}
/* ========== 下载区 ========== */
.download { background: linear-gradient(180deg, #fff 0%, var(--green-50) 100%); }
.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.download-card {
  background: #fff; border: 1.5px solid var(--green-100);
  border-radius: var(--radius-lg); padding: 36px 28px 30px;
  text-align: center; transition: all .3s;
}
.download-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--green-300); }
.dc-wechat { background: var(--orange-100); border-color: var(--orange-300); }
.dc-icon { font-size: 48px; margin-bottom: 16px; }
.dc-name { font-size: 18px; font-weight: 800; margin-bottom: 6px; }
.dc-desc { font-size: 13.5px; color: var(--ink-400); margin-bottom: 12px; }
.dc-tags { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-bottom: 20px; }
.dc-tags span { font-size: 12px; font-weight: 600; background: var(--green-50); color: var(--green-600); padding: 3px 10px; border-radius: 999px; border: 1px solid var(--green-100); }
.dc-btn { width: 100%; }
.download-note {
  text-align: center; margin-top: 40px; font-size: 14px; color: var(--ink-400);
  background: #fff; border: 1px dashed var(--green-200);
  border-radius: 16px; padding: 20px 28px; line-height: 2;
}
@media (max-width: 1024px) {
  .download-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .download-grid { grid-template-columns: 1fr; }
}

/* ========== 下载区新结构 ========== */
.download { background: linear-gradient(180deg, #fff 0%, var(--green-50) 100%); }
.download-tabs {
  display: flex; gap: 8px; justify-content: center;
  margin-bottom: 36px;
}
.dl-tab {
  padding: 11px 30px; border: 2px solid var(--green-200);
  border-radius: 999px; font-size: 15px; font-weight: 700;
  background: #fff; color: var(--ink-600); cursor: pointer; transition: all .25s;
}
.dl-tab.active {
  background: var(--grad-main); color: #fff; border-color: transparent;
  box-shadow: 0 8px 24px rgba(76,187,110,.3);
}
.dl-panel { display: none; }
.dl-panel.active { display: block; }
.dl-section-title {
  font-size: 16px; font-weight: 800; color: var(--ink-600);
  padding: 14px 0 16px; border-bottom: 1.5px solid var(--green-100);
  margin-bottom: 20px;
}
.dl-app-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 32px;
}
.dl-app-card {
  display: flex; align-items: flex-start; gap: 14px;
  background: #fff; border: 1.5px solid var(--green-100);
  border-radius: 16px; padding: 18px 18px; transition: all .3s;
}
.dl-app-card:hover { border-color: var(--green-400); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.dl-app-icon { font-size: 30px; flex-shrink: 0; margin-top: 2px; }
.dl-app-name { font-size: 14.5px; font-weight: 800; color: var(--ink-900); margin-bottom: 6px; }
.dl-app-desc { font-size: 13px; color: var(--ink-400); line-height: 1.5; }
.dl-platform-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 8px;
}
.dl-platform-card {
  background: #fff; border: 1.5px solid var(--green-100);
  border-radius: 20px; padding: 28px 20px 24px; text-align: center;
  transition: all .3s;
}
.dl-platform-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--green-300); }
.dp-icon { font-size: 44px; margin-bottom: 12px; }
.dp-name { font-size: 16px; font-weight: 800; margin-bottom: 8px; }
.dp-tags { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-bottom: 18px; }
.dp-tags span { font-size: 12px; background: var(--green-50); color: var(--green-600); padding: 3px 10px; border-radius: 999px; border: 1px solid var(--green-100); font-weight: 600; }
.dp-btn { width: 100%; }
.download-note { margin-top: 40px; font-size: 14px; color: var(--ink-400); background: #fff; border: 1px dashed var(--green-200); border-radius: 16px; padding: 20px 28px; line-height: 2; text-align: center; }
@media (max-width: 900px) {
  .dl-app-grid { grid-template-columns: repeat(2, 1fr); }
  .dl-platform-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .dl-app-grid, .dl-platform-row { grid-template-columns: 1fr; }
  .dl-tab { padding: 10px 20px; font-size: 14px; }
}

/* ---------- 洞察区块 ---------- */
.insights {
  padding: 80px 0;
  background: var(--bg);
}
.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.insight-card {
  background: #fff;
  border: 1px solid var(--green-100);
  border-radius: 16px;
  padding: 28px;
  transition: transform .2s, box-shadow .2s;
}
.insight-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(16,42,30,.10);
}
.insight-tag {
  display: inline-block;
  background: var(--green-100);
  color: var(--green-700);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.insight-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
  margin: 0 0 10px;
  line-height: 1.4;
}
.insight-desc {
  font-size: 14px;
  color: var(--ink-500);
  line-height: 1.7;
  margin: 0 0 18px;
}
.insight-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--green-600);
  text-decoration: none;
}
.insight-link:hover { text-decoration: underline; }