/* ============================================================
   高报志愿 · 官网样式
   设计依据：tags/UI Desige/UI设计规范_DesignSystem.md
   ============================================================ */

:root{
  /* Brand */
  --primary-900:#16233D;
  --primary-800:#1D2E4A;
  --primary-700:#263A5A;
  --primary-600:#35537A;

  /* Data / 科技青 */
  --cyan:#20A9C4;
  --cyan-bg:#DDF5F8;

  /* Action / 行动紫 */
  --purple:#6F3FD3;
  --purple-light:#8054DE;
  --purple-bg:#EEE8FC;

  /* Neutral */
  --page:#F5F7FB;
  --surface:#FFFFFF;
  --border:#E5EAF2;
  --text-primary:#16233D;
  --text-secondary:#344054;
  --text-tertiary:#667085;
  --text-disabled:#98A2B3;

  /* Radius */
  --r-sm:8px;
  --r-md:10px;
  --r-lg:12px;
  --r-xl:16px;
  --r-2xl:20px;
  --r-pill:999px;

  /* Shadow */
  --shadow-sm:0 2px 8px rgba(22,35,61,.06);
  --shadow-card:0 6px 12px rgba(22,35,61,.08);
  --shadow-lift:0 14px 34px rgba(22,35,61,.11);

  --wrap:1180px;
  --header-h:72px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
section[id]{scroll-margin-top:calc(var(--header-h) + 14px)}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
}

body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text-secondary);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

h1,h2,h3,h4{margin:0;color:var(--text-primary);line-height:1.3;letter-spacing:-.01em}
p{margin:0;text-wrap:pretty}
ul,ol,dl,dd{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
svg{display:block}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.wrap--narrow{max-width:860px}

/* ==================== 按钮 ==================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border:1px solid transparent;border-radius:var(--r-md);
  font-family:inherit;font-size:15px;font-weight:600;letter-spacing:.01em;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn svg{width:18px;height:18px;flex:none}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

.btn-primary{background:var(--purple);color:#fff;box-shadow:0 8px 20px rgba(111,63,211,.26)}
.btn-primary:hover{background:var(--purple-light);box-shadow:0 12px 26px rgba(111,63,211,.32)}

.btn-ghost{
  background:rgba(255,255,255,.06);color:#fff;
  border-color:rgba(255,255,255,.28);backdrop-filter:blur(6px);
}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.45)}

.btn-outline{background:#fff;color:var(--primary-900);border-color:var(--border)}
.btn-outline:hover{border-color:var(--primary-600);color:var(--primary-700)}

.btn-light{background:#fff;color:var(--primary-900)}
.btn-light:hover{box-shadow:0 10px 24px rgba(0,0,0,.16)}

.btn-block{width:100%;margin-top:4px}

/* ==================== 顶部导航 ==================== */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  height:var(--header-h);
  background:rgba(22,35,61,0);
  transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-solid{
  background:rgba(22,35,61,.92);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:rgba(255,255,255,.10);
  box-shadow:0 6px 24px rgba(11,20,38,.18);
}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}

.brand{display:flex;align-items:center;gap:11px;color:#fff;flex:none}
.brand-mark{
  width:40px;height:40px;flex:none;
  display:grid;place-items:center;
  border-radius:11px;
  background:#F8FAFF;
  padding:3px;
  box-shadow:0 4px 14px rgba(6,12,26,.32),inset 0 0 0 1px rgba(255,255,255,.5);
}
.brand-mark img{width:100%;height:100%;object-fit:contain;display:block}
.brand--footer .brand-mark{width:36px;height:36px;padding:2px;border-radius:10px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:18px;font-weight:700;letter-spacing:.01em}
.brand-text em{font-size:10.5px;font-style:normal;letter-spacing:.13em;color:rgba(255,255,255,.68);margin-top:3px}

.nav{display:flex;align-items:center;gap:6px}
.nav a{
  position:relative;
  padding:9px 14px;border-radius:var(--r-sm);
  font-size:14.5px;font-weight:500;color:rgba(255,255,255,.84);
  transition:color .18s ease,background .18s ease;
}
.nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav a.nav-cta{
  margin-left:12px;padding:10px 20px;
  background:transparent;color:#fff;font-weight:600;
  border:1px solid rgba(255,255,255,.34);
}
.nav a.nav-cta:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.55);color:#fff}

.nav-toggle{
  display:none;width:44px;height:44px;padding:0;
  background:transparent;border:1px solid rgba(255,255,255,.24);border-radius:var(--r-md);
  cursor:pointer;
}
.nav-toggle span{
  display:block;width:18px;height:1.6px;margin:4px auto;border-radius:2px;
  background:#fff;transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg)}

/* ==================== 首屏 ==================== */
.hero{
  position:relative;
  display:flex;align-items:center;
  min-height:100vh;
  min-height:100svh;
  padding:calc(var(--header-h) + 56px) 0 72px;
  background:
    radial-gradient(1100px 560px at 78% -8%,#23406B 0%,rgba(35,64,107,0) 62%),
    linear-gradient(168deg,#16233D 0%,#1A2B48 52%,#16233D 100%);
  color:#fff;
  overflow:hidden;
  isolation:isolate;
}
.hero-bg{position:absolute;inset:0;z-index:-1;pointer-events:none}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.4}
.hero-glow--cyan{width:520px;height:520px;right:-90px;top:-120px;background:rgba(32,169,196,.34)}
.hero-glow--purple{width:440px;height:440px;left:-160px;bottom:-200px;background:rgba(111,63,211,.32)}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(115% 85% at 50% 0%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(115% 85% at 50% 0%,#000 0%,transparent 78%);
}

.hero-inner{
  width:100%;
  display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  gap:56px;align-items:center;
}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 15px 7px 12px;
  border:1px solid rgba(32,169,196,.35);
  border-radius:var(--r-pill);
  background:rgba(32,169,196,.10);
  font-size:13px;font-weight:500;letter-spacing:.02em;
  color:#8FE3F1;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(32,169,196,.18)}

.hero h1{
  margin:26px 0 0;
  font-size:clamp(38px,4.6vw,60px);
  line-height:1.16;
  font-weight:700;
  letter-spacing:-.02em;
  color:#fff;
}
.hero-sub{
  margin-top:22px;
  max-width:34em;
  text-wrap:pretty;
  font-size:16.5px;
  line-height:1.85;
  color:rgba(255,255,255,.74);
}
.hero-sub strong{
  color:#fff;font-weight:600;
  background:linear-gradient(180deg,transparent 62%,rgba(32,169,196,.35) 62%);
  padding:0 2px;
}

.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

.hero-facts{display:flex;flex-wrap:wrap;gap:0;margin-top:46px}
.hero-facts li{
  padding-right:26px;margin-right:26px;
  border-right:1px solid rgba(255,255,255,.14);
  display:flex;flex-direction:column;gap:2px;
}
.hero-facts li:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-facts b{font-size:16px;color:#fff;font-weight:600;letter-spacing:.01em}
.hero-facts span{font-size:12.5px;color:rgba(255,255,255,.52);letter-spacing:.04em}

/* ---- 手机线框（示意，非真实数据） ---- */
.hero-visual{
  position:relative;
  width:100%;max-width:520px;margin:0 auto;
  display:flex;justify-content:center;align-items:center;
  min-height:560px;
}

.phone{
  position:relative;
  width:296px;height:568px;
  border-radius:38px;
  padding:11px;
  background:linear-gradient(160deg,rgba(255,255,255,.26),rgba(255,255,255,.06));
  border:1px solid rgba(255,255,255,.22);
  box-shadow:0 40px 80px -20px rgba(6,12,26,.75),0 0 0 1px rgba(255,255,255,.05) inset;
  transform:rotate(-2.4deg);
}
.phone-notch{
  position:absolute;top:20px;left:50%;transform:translateX(-50%);
  width:72px;height:6px;border-radius:3px;background:rgba(255,255,255,.22);z-index:2;
}
.phone-screen{
  height:100%;border-radius:28px;
  background:linear-gradient(180deg,#F7F9FD 0%,#EDF1F8 100%);
  padding:26px 18px 18px;
  display:flex;flex-direction:column;gap:12px;
  overflow:hidden;
}
.mock-top{display:flex;align-items:center;justify-content:space-between}
.mock-chip{
  font-size:10.5px;font-weight:600;letter-spacing:.02em;
  color:var(--primary-700);background:#fff;
  padding:4px 9px;border-radius:var(--r-sm);
  box-shadow:var(--shadow-sm);
}
.mock-dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);opacity:.85}
.mock-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.mock-title{font-size:19px;font-weight:700;color:var(--primary-900);margin-top:2px}
.mock-report{
  font-size:10px;font-weight:600;color:var(--purple);
  background:var(--purple-bg);padding:3px 8px;border-radius:5px;
}

.mock-seg{display:flex;gap:4px;background:#E4E9F2;border-radius:var(--r-sm);padding:3px}
.mock-seg span{
  flex:1;text-align:center;font-size:11.5px;font-weight:600;color:var(--text-tertiary);
  padding:5px 0;border-radius:6px;
}
.mock-seg span.is-on{background:#fff;color:var(--purple);box-shadow:var(--shadow-sm)}

.mock-card{
  background:#fff;border-radius:var(--r-lg);padding:12px;
  box-shadow:0 4px 10px rgba(22,35,61,.06);
  display:flex;flex-direction:column;gap:7px;
}
.mock-card-head{display:flex;align-items:center;gap:7px}
.mock-tier{
  flex:none;font-size:9.5px;font-weight:700;line-height:1;
  color:#B25C00;background:#FFF0DD;
  padding:4px 6px;border-radius:4px;
}
.mock-tier--cyan{color:#0E7E95;background:var(--cyan-bg)}
.mock-school{
  font-size:12.5px;font-weight:700;color:var(--primary-900);letter-spacing:.01em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.mock-sub{font-size:10px;color:var(--text-tertiary);letter-spacing:.01em}
.mock-tags{display:flex;gap:6px}
.mock-tags i{
  font-style:normal;font-size:9.5px;color:var(--cyan);
  background:rgba(32,169,196,.12);padding:2px 7px;border-radius:4px;
}
.mock-bars{display:flex;align-items:flex-end;gap:5px;height:34px;margin-top:2px}
.mock-bars i{
  flex:1;height:var(--h);border-radius:3px 3px 1px 1px;
  background:linear-gradient(180deg,rgba(32,169,196,.75),rgba(32,169,196,.25));
}
.mock-caption{font-size:9px;color:var(--text-disabled);letter-spacing:.08em}
.mock-bottom{
  margin-top:auto;display:flex;align-items:center;justify-content:space-around;
  background:#fff;border-radius:var(--r-md);padding:10px 8px;
  box-shadow:0 -2px 12px rgba(22,35,61,.06);
}
.mock-bottom span{font-size:9.5px;letter-spacing:.04em;color:var(--text-disabled)}
.mock-bottom span.is-on{color:var(--purple);font-weight:700}

.float-card{
  position:absolute;z-index:3;
  display:flex;align-items:center;gap:11px;
  min-width:152px;
  padding:12px 16px 12px 12px;
  background:rgba(255,255,255,.97);
  border-radius:var(--r-lg);
  box-shadow:0 20px 44px -14px rgba(6,12,26,.55);
  animation:floaty 6.5s ease-in-out infinite;
}
.float-card b{display:block;font-size:13px;color:var(--primary-900);font-weight:600;line-height:1.35}
.float-card small{display:block;font-size:11px;color:var(--text-tertiary);line-height:1.4}
.float-ic{
  width:34px;height:34px;flex:none;display:grid;place-items:center;
  border-radius:var(--r-md);background:var(--cyan-bg);color:#128DA6;
}
.float-ic svg{width:18px;height:18px}
.float-ic--purple{background:var(--purple-bg);color:var(--purple)}
.float-card--a{top:70px;right:-14px}
.float-card--b{bottom:70px;left:-14px;animation-delay:-3.2s}

@keyframes floaty{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-9px)}
}

/* ==================== 通用区块 ==================== */
.section{padding:104px 0;position:relative}
.section--tint{background:var(--page)}
.section--dark{background:var(--primary-900);color:rgba(255,255,255,.8)}
.section--dark::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(900px 420px at 50% 0%,rgba(32,169,196,.13),transparent 70%);
}

.sec-head{max-width:720px;margin-bottom:56px}
.sec-head--center{margin-inline:auto;text-align:center}
.sec-head--invert h2{color:#fff}
.sec-head--invert p{color:rgba(255,255,255,.8)}

.kicker{
  display:inline-block;
  font-size:12.5px;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--purple);
  padding-bottom:10px;
  position:relative;
}
.kicker::after{
  content:"";position:absolute;left:0;bottom:0;
  width:28px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--purple),var(--cyan));
}
.sec-head--center .kicker{padding-left:0}
.sec-head--center .kicker::after{left:50%;transform:translateX(-50%)}
.sec-head--invert .kicker{color:#7FD8E8}
.sec-head--invert .kicker::after{background:linear-gradient(90deg,#7FD8E8,#B49AF0)}

.sec-head h2{
  margin-top:18px;
  font-size:clamp(26px,3vw,38px);
  font-weight:700;letter-spacing:-.02em;line-height:1.3;
}
.sec-head p{margin-top:16px;font-size:16.5px;color:var(--text-tertiary);line-height:1.85}

/* ==================== 网格 / 卡片 ==================== */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}

.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-2xl);
  padding:30px 28px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:#D6DEEB}

.feature h3{font-size:19px;font-weight:600;margin-top:20px}
.feature p{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--text-tertiary)}

.feat-ic{
  width:50px;height:50px;display:grid;place-items:center;
  border-radius:var(--r-lg);
  background:rgba(53,83,122,.09);color:var(--primary-700);
}
.feat-ic svg{width:23px;height:23px}
.ic-cyan{background:rgba(32,169,196,.11);color:#118AA3}
.ic-purple{background:rgba(111,63,211,.10);color:var(--purple)}
.ic-blue{background:rgba(53,83,122,.09);color:var(--primary-700)}

/* ==================== 流程 ==================== */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;counter-reset:s}
.step{
  position:relative;
  padding:0 26px 0 0;
}
.step::before{
  content:"";position:absolute;top:25px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--border) 0%,var(--border) 70%,transparent 100%);
}
.step:last-child::before{display:none}
.step-no{
  position:relative;z-index:1;
  display:inline-grid;place-items:center;
  width:52px;height:52px;border-radius:var(--r-md);
  background:#fff;border:1px solid var(--border);
  font-size:15px;font-weight:700;color:var(--purple);
  box-shadow:var(--shadow-sm);
}
.step h3{margin-top:22px;font-size:18px;font-weight:600}
.step p{margin-top:9px;font-size:14px;line-height:1.8;color:var(--text-tertiary);max-width:23em}

/* ==================== 多端 ==================== */
.devices{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.86fr);gap:64px;align-items:center}
.devices-copy h2{font-size:clamp(26px,3vw,36px);margin-top:18px;letter-spacing:-.02em}
.devices-copy > p{margin-top:16px;font-size:16px;color:var(--text-tertiary);line-height:1.85}

.dev-list{margin-top:34px;display:flex;flex-direction:column;gap:14px}
.dev-list li{
  display:flex;gap:16px;align-items:flex-start;
  padding:18px 20px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.dev-list li:hover{border-color:#D3DCEA;box-shadow:var(--shadow-card)}
.dev-badge{
  flex:none;margin-top:2px;
  font-size:11.5px;font-weight:700;letter-spacing:.02em;
  color:var(--purple);background:var(--purple-bg);
  padding:4px 9px;border-radius:6px;
}
.dev-badge--cyan{color:#0E7E95;background:var(--cyan-bg)}
.dev-badge--purple{color:#5B31B8;background:#E9E2FB}
.dev-list b{display:block;font-size:15.5px;color:var(--text-primary);font-weight:600}
.dev-list span:not(.dev-badge){display:block;margin-top:4px;font-size:13.5px;line-height:1.75;color:var(--text-tertiary)}

.devices-art{display:flex;justify-content:center;align-items:center}
.art-panel{
  width:100%;max-width:420px;
  background:linear-gradient(168deg,#FBFCFE,#F1F5FB);
  border:1px solid var(--border);
  border-radius:var(--r-2xl);
  padding:30px 28px 28px;
  box-shadow:0 24px 60px -30px rgba(22,35,61,.35);
  display:flex;flex-direction:column;justify-content:center;gap:13px;
}
.art-row{display:flex;align-items:center;gap:12px}
.art-pill{
  flex:none;font-size:11px;font-weight:600;color:var(--purple);
  background:#fff;border:1px solid var(--border);border-radius:var(--r-sm);
  padding:5px 9px;box-shadow:var(--shadow-sm);width:64px;text-align:center;
}
.art-pill--cyan{color:#0E7E95}
.art-pill--purple{color:#5B31B8}
.art-bar{height:9px;border-radius:4px;background:#E3E9F2}
.w45{width:45%}.w60{width:60%}.w80{width:80%}
.art-divider{position:relative;height:30px;margin:2px 0}
.art-divider::before{
  content:"";position:absolute;left:50%;top:0;bottom:8px;width:1px;
  background:linear-gradient(180deg,#D8E2EF,#B9CBDD);transform:translateX(-50%);
}
.art-divider::after{
  content:"";position:absolute;left:50%;bottom:0;
  width:7px;height:7px;border-radius:50%;background:var(--cyan);
  transform:translateX(-50%);box-shadow:0 0 0 4px rgba(32,169,196,.14);
}
.art-center{text-align:center;padding:6px 10px 2px}
.art-db{
  display:inline-block;padding:10px 22px;border-radius:var(--r-md);
  background:var(--primary-900);color:#fff;font-size:14px;font-weight:600;
  box-shadow:0 10px 24px -10px rgba(22,35,61,.7);
}
.art-center small{display:block;margin-top:10px;font-size:11.5px;letter-spacing:.06em;color:var(--text-tertiary)}

/* ==================== 安全 ==================== */
.security-grid{position:relative;z-index:1}
.sec-item{
  padding:24px 24px 26px;
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-xl);
  background:rgba(255,255,255,.035);
}
.sec-item h3{font-size:16px;color:#fff;font-weight:600;display:flex;align-items:center;gap:9px}
.sec-item h3::before{
  content:"";width:6px;height:6px;border-radius:2px;flex:none;
  background:var(--cyan);box-shadow:0 0 0 3px rgba(32,169,196,.16);
}
.sec-item p{margin-top:11px;font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.72)}

/* ==================== 企业介绍 ==================== */
.company{display:grid;grid-template-columns:minmax(0,1.32fr) minmax(0,.68fr);gap:64px;align-items:stretch}
.company-main h2{font-size:clamp(26px,3vw,36px);margin-top:18px;letter-spacing:-.02em}
.company-lead{margin-top:20px;font-size:17px;line-height:1.9;color:var(--text-secondary);font-weight:500}
.company-main > p + p{margin-top:14px;font-size:15px;line-height:1.95;color:var(--text-tertiary)}

.values{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:34px}
.value{
  padding:20px 20px 22px;
  border-radius:var(--r-lg);
  background:var(--page);
  border:1px solid var(--border);
}
.value b{display:block;font-size:15px;color:var(--text-primary);font-weight:600}
.value span{display:block;margin-top:7px;font-size:13px;line-height:1.8;color:var(--text-tertiary)}

.company-meta{margin-top:32px;border-top:1px solid var(--border);padding-top:8px}
.company-meta div{
  display:flex;gap:24px;padding:14px 0;border-bottom:1px dashed var(--border);
  font-size:14px;
}
.company-meta span{flex:none;width:88px;color:var(--text-tertiary)}
.company-meta b{color:var(--text-secondary);font-weight:500}

.company-side{display:flex;flex-direction:column;justify-content:space-between;gap:16px;height:100%}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-xl);
  padding:26px 24px;box-shadow:var(--shadow-card);
}
.side-card h3{font-size:16px;font-weight:600}
.side-card ul{margin-top:16px;display:flex;flex-direction:column;gap:11px}
.side-card > p{margin-top:12px;font-size:13.5px;line-height:1.9;color:var(--text-tertiary)}
.side-card--accent > p{color:rgba(255,255,255,.75)}
.side-card li{
  position:relative;padding-left:18px;
  font-size:13.5px;line-height:1.75;color:var(--text-tertiary);
}
.side-card li::before{
  content:"";position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:50%;background:var(--cyan);
}
.side-card--accent{
  background:linear-gradient(165deg,#1D2E4A,#16233D);
  border-color:transparent;color:rgba(255,255,255,.75);
}
.side-card--accent h3{color:#fff}
.side-card--accent p{margin-top:12px;font-size:13.5px;line-height:1.85}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-size:14px;font-weight:600;color:#8FE3F1;
}
.link-arrow span{transition:transform .2s ease}
.link-arrow--dark{color:var(--purple)}
.link-arrow:hover span{transform:translateX(4px)}

/* ==================== 下载 ==================== */
.download-grid{align-items:stretch}
.dl-card{
  position:relative;display:flex;flex-direction:column;
  padding:32px 30px;
}
.dl-card--feature{
  border-color:rgba(111,63,211,.28);
  box-shadow:0 18px 44px -22px rgba(111,63,211,.4);
}
.dl-flag{
  position:absolute;top:-12px;left:30px;
  font-size:11.5px;font-weight:600;color:#fff;
  background:var(--purple);padding:4px 12px;border-radius:var(--r-pill);
  box-shadow:0 6px 14px rgba(111,63,211,.3);
}
.dl-ic{
  width:52px;height:52px;display:grid;place-items:center;
  border-radius:var(--r-lg);background:rgba(53,83,122,.08);color:var(--primary-700);
}
.dl-ic--cyan{background:rgba(32,169,196,.11);color:#118AA3}
.dl-ic--purple{background:rgba(111,63,211,.10);color:var(--purple)}
.dl-ic svg{width:24px;height:24px}
.dl-card h3{font-size:20px;font-weight:600;margin-top:20px}
.dl-desc{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-tertiary);min-height:4.5em}

.dl-spec{margin:18px 0 20px;border-top:1px solid var(--border);padding-top:12px}
.dl-spec div{display:flex;justify-content:space-between;gap:16px;padding:6px 0;font-size:13px}
.dl-spec dt{color:var(--text-tertiary);flex:none}
.dl-spec dd{color:var(--text-secondary);text-align:right;font-weight:500;margin:0}

.qr-box{
  margin:6px auto 12px;
  width:100%;aspect-ratio:1/1;max-width:190px;
  border-radius:var(--r-lg);
  border:1px dashed #C9D4E3;
  background:
    linear-gradient(135deg,#F7F9FC 25%,transparent 25%) -10px 0/20px 20px,
    linear-gradient(225deg,#F7F9FC 25%,transparent 25%) -10px 0/20px 20px,
    linear-gradient(315deg,#F7F9FC 25%,transparent 25%) 0 0/20px 20px,
    linear-gradient(45deg,#F7F9FC 25%,transparent 25%) 0 0/20px 20px,
    #fff;
  display:grid;place-items:center;overflow:hidden;
}
.qr-box img{width:100%;height:100%;object-fit:contain;padding:8px}
.qr-fallback{
  display:none;flex-direction:column;align-items:center;gap:4px;
  font-size:13px;font-weight:600;color:var(--text-disabled);
}
.qr-fallback small{font-size:10.5px;color:#B7C0CF;font-weight:400;letter-spacing:.02em}
.dl-hint{font-size:12.5px;color:var(--text-tertiary);margin-top:auto;text-align:center;padding-top:2px}
.dl-card > .btn{margin-top:auto}
.dl-spec{margin-bottom:0}

.dl-note{
  margin-top:30px;text-align:center;
  font-size:12.5px;color:var(--text-tertiary);
}

/* ==================== FAQ ==================== */
.faq{display:flex;flex-direction:column;gap:12px}
.faq details{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:0 22px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq details[open]{border-color:#D3DCEA;box-shadow:var(--shadow-card)}
.faq summary{
  list-style:none;cursor:pointer;
  padding:19px 34px 19px 0;position:relative;
  font-size:15.5px;font-weight:600;color:var(--text-primary);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:2px;top:50%;
  width:9px;height:9px;
  border-right:1.7px solid var(--text-tertiary);
  border-bottom:1.7px solid var(--text-tertiary);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .22s ease;
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-body{
  padding:0 0 20px;font-size:14px;line-height:1.9;color:var(--text-tertiary);
  border-top:1px dashed var(--border);padding-top:16px;
}

/* ==================== CTA / 联系 ==================== */
.section--cta{
  background:
    radial-gradient(760px 380px at 12% 0%,#2A4C7C 0%,rgba(42,76,124,0) 62%),
    linear-gradient(120deg,#16233D,#1F3355 60%,#16233D);
  color:#fff;
  padding:80px 0;
}
.cta-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.72fr);gap:56px;align-items:center}
.cta-inner h2{color:#fff;font-size:clamp(24px,2.6vw,32px);letter-spacing:-.02em}
.cta-inner p{margin-top:12px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.68);max-width:34em}
.cta-contact{
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-xl);
  padding:26px 26px 24px;
  backdrop-filter:blur(8px);
}
.cta-line{display:flex;justify-content:space-between;gap:16px;padding:9px 0;font-size:14px}
.cta-line + .cta-line{border-top:1px solid rgba(255,255,255,.08)}
.cta-line span{color:rgba(255,255,255,.55);flex:none}
.cta-line b{color:#fff;font-weight:600;text-align:right}
.cta-contact .btn{margin-top:16px;width:100%}

/* ==================== 页脚 ==================== */
.site-footer{background:#0F1929;color:rgba(255,255,255,.55);padding:64px 0 26px}
.footer-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:48px}
.brand--footer{color:#fff}
.footer-brand p{margin-top:16px;font-size:13px;line-height:1.9}
.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.footer-nav h4{font-size:13px;color:#fff;font-weight:600;letter-spacing:.04em;margin-bottom:14px}
.footer-nav a{display:block;font-size:13px;padding:5px 0;color:rgba(255,255,255,.55);transition:color .18s ease}
.footer-nav a:hover{color:#8FE3F1}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(255,255,255,.52);
}

/* ==================== 滚动入场动画 ==================== */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s cubic-bezier(.2,.7,.3,1),transform .6s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}

/* ==================== 打印（导出 PDF 时保证内容可见） ==================== */
@media print{
  .site-header,.nav-toggle{display:none!important}
  .reveal{opacity:1!important;transform:none!important}
  .hero{min-height:auto;background:#fff!important;color:#000!important}
  .hero h1,.hero-sub,.hero-sub strong,.hero-facts b{color:#000!important}
  .hero-sub strong{background:none!important}
  .float-card,.hero-glow,.hero-grid{display:none!important}
  .phone{box-shadow:none!important;border:1px solid #ccc!important}
  .section--dark,.section--cta,.site-footer{background:#fff!important;color:#000!important}
  .sec-item{border-color:#ddd!important}
  .sec-item h3,.sec-head--invert h2{color:#000!important}
  .sec-item p,.sec-head--invert p{color:#333!important}
  .card{box-shadow:none!important;break-inside:avoid}
  .faq details{break-inside:avoid}
  .faq .faq-body{display:block!important}
  .section{padding:32px 0!important}
}

@media (max-width:1080px){
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .hero-visual{min-height:auto;order:2;margin-top:8px}
  .phone{transform:none;width:280px;height:540px}
  .float-card--a{right:6%;top:24px}
  .float-card--b{left:4%;bottom:40px}
  .devices{grid-template-columns:1fr;gap:44px}
  .devices-art{order:2}
  .company{grid-template-columns:1fr;gap:40px}
  .company-side{position:static}
  .cta-inner{grid-template-columns:1fr;gap:36px}
  .footer-inner{grid-template-columns:1fr;gap:36px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:40px}
  .step:nth-child(2)::before{display:none}
}

@media (max-width:820px){
  :root{--header-h:64px}
  .nav{
    position:fixed;inset:var(--header-h) 0 auto 0;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:14px 20px 22px;
    background:rgba(22,35,61,.98);
    backdrop-filter:blur(16px);
    border-bottom:1px solid rgba(255,255,255,.1);
    box-shadow:0 18px 40px rgba(6,12,26,.4);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:transform .24s ease,opacity .24s ease;
  }
  .nav.is-open{transform:none;opacity:1;pointer-events:auto}
  .nav a{padding:14px 6px;font-size:15.5px;border-radius:var(--r-sm)}
  .nav a + a{border-top:1px solid rgba(255,255,255,.06)}
  .nav a.nav-cta{margin:12px 0 0;text-align:center;padding:14px}
  .nav-toggle{display:block}
  .site-header{background:rgba(22,35,61,.92);backdrop-filter:blur(10px)}

  .hero{padding:calc(var(--header-h) + 56px) 0 72px}
  .hero-facts{gap:0;margin-top:34px}
  .hero-facts li{padding-right:18px;margin-right:18px}
  .hero-facts b{font-size:14.5px}
  .hero-facts span{font-size:11.5px}

  .section{padding:76px 0}
  .sec-head{margin-bottom:40px}
  .sec-head p{font-size:15px}

  .grid-3{grid-template-columns:1fr}
  .values{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;row-gap:0}
  .step{padding:0 0 34px 0}
  .step::before{display:none}
  .step-no{width:46px;height:46px;font-size:14px}
  .step h3{margin-top:14px}
  .step p{max-width:none}

  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .section--cta{padding:64px 0}
}

@media (max-width:520px){
  .wrap{padding:0 18px}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-facts li{padding-right:14px;margin-right:14px}
  .phone{width:252px;height:496px;border-radius:32px}
  .phone-screen{border-radius:23px;padding:22px 14px 14px}
  .float-card{padding:9px 12px 9px 9px}
  .float-card b{font-size:11.5px}
  .float-card small{font-size:10px}
  .float-ic{width:28px;height:28px}
  .float-card--a{right:-4px;top:10px}
  .float-card--b{left:-6px;bottom:26px}
  .card{padding:24px 20px;border-radius:var(--r-xl)}
  .dl-card{padding:26px 20px}
  .company-meta div{flex-direction:column;gap:4px}
  .company-meta span{width:auto}
  .cta-line{flex-direction:column;gap:2px}
  .cta-line b{text-align:left}
  .footer-bottom{flex-direction:column;gap:8px}
  .qr-box{max-width:160px}
}