/* =========================================================
   铭赞网络 · GEO优化与全域网络营销
   主样式表 / 系统字体，无第三方依赖
   ========================================================= */

:root{
  --ink:#070d17;
  --ink-2:#0b1322;
  --ink-3:#121d30;
  --paper:#f7f5ef;
  --paper-2:#efece3;
  --line:#e2dccd;
  --text:#17202b;
  --muted:#5d6875;
  --gold:#c9a063;
  --gold-2:#e6cd9b;
  --gold-deep:#a87e41;
  --teal:#2fb9b3;
  --white:#ffffff;
  --radius:20px;
  --shadow:0 26px 64px -30px rgba(12,20,34,.32);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  --wrap:1220px;
  --head-h:84px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  background:var(--paper);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
::selection{background:rgba(201,160,99,.28)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}

.wrap{width:min(var(--wrap),calc(100% - 48px));margin-inline:auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:fixed;left:16px;top:-80px;z-index:999;background:var(--gold);color:#1a1206;padding:10px 18px;border-radius:999px;transition:top .2s}
.skip-link:focus{top:12px}

/* ---------- 通用排版 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--gold-deep);font-weight:600;
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;opacity:.7}
.section{padding:104px 0;position:relative}
.section--tight{padding:76px 0}
.section--paper{background:var(--paper)}
.section--paper2{background:var(--paper-2)}
.section--ink{background:var(--ink-2);color:#eef1f5}
.sec-head{max-width:760px;margin-bottom:52px}
.sec-head h2{
  font-size:clamp(26px,3vw,40px);line-height:1.3;letter-spacing:-.01em;
  font-weight:700;margin-top:16px;text-wrap:balance;
}
.sec-head .sec-lead{color:var(--muted);margin-top:16px;font-size:16.5px;max-width:680px}
.section--ink .sec-head h2{color:#fff}
.section--ink .eyebrow{color:var(--gold-2)}
.section--ink .sec-lead{color:#a8b3c2}
.sec-head--center{margin-inline:auto;text-align:center}
.sec-head--center .eyebrow{justify-content:center}
.sec-head--center .sec-lead{margin-inline:auto}
.accent{color:var(--gold-deep)}
.section--ink .accent{color:var(--gold-2)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:50px;padding:0 28px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn svg{width:16px;height:16px}
.btn--gold{
  background:linear-gradient(135deg,#e6cd9b 0%,#c9a063 48%,#ab8247 100%);
  color:#1b1306;box-shadow:0 14px 30px -14px rgba(201,160,99,.65);
}
.btn--gold:hover{transform:translateY(-2px);box-shadow:0 20px 40px -16px rgba(201,160,99,.75)}
.btn--ghost{border-color:rgba(255,255,255,.34);color:#fff;background:rgba(255,255,255,.04)}
.btn--ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6);transform:translateY(-2px)}
.btn--line{border-color:var(--gold);color:var(--gold-deep);background:transparent}
.btn--line:hover{background:var(--gold);color:#1b1306;transform:translateY(-2px)}
.btn--dark{background:var(--ink-2);color:#fff}
.btn--dark:hover{background:var(--ink-3);transform:translateY(-2px)}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:fixed;inset:0 0 auto 0;z-index:120;
  height:var(--head-h);transition:height .3s ease,background .35s ease,box-shadow .35s ease,backdrop-filter .35s ease;
}
.site-head.is-scrolled{
  height:70px;
  background:rgba(7,13,23,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 12px 40px -24px rgba(0,0,0,.9);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.site-head.is-solid{background:rgba(7,13,23,.95);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.07)}
.head-inner{
  width:min(var(--wrap),calc(100% - 48px));margin-inline:auto;height:100%;
  display:flex;align-items:center;gap:34px;
}
.brand{display:flex;align-items:center;gap:12px;color:#fff;flex-shrink:0}
.brand-mark{width:38px;height:38px;display:block;transition:transform .4s ease}
.brand:hover .brand-mark{transform:rotate(-6deg) scale(1.04)}
.brand-text{display:flex;align-items:baseline;gap:9px;line-height:1.1;white-space:nowrap}
.brand-text strong{font-size:19px;font-weight:700;letter-spacing:.06em}
.brand-text sup{font-size:9px;vertical-align:super;letter-spacing:0;color:var(--gold-2);font-weight:400;margin-left:1px}
.brand-divider{color:rgba(255,255,255,.3);font-weight:300;font-size:14px}
.brand-text em{font-style:normal;font-size:12.5px;letter-spacing:.14em;color:rgba(255,255,255,.72);font-weight:400}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav a{
  position:relative;display:block;padding:10px 14px;color:rgba(255,255,255,.78);
  font-size:14.5px;letter-spacing:.03em;border-radius:8px;transition:color .2s ease;
}
.nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1.5px;
  background:linear-gradient(90deg,var(--gold),var(--gold-2));
  transform:scaleX(0);transform-origin:left;transition:transform .3s cubic-bezier(.2,.7,.3,1);
}
.nav a:hover,.nav a.is-active{color:#fff}
.nav a:hover::after,.nav a.is-active::after{transform:scaleX(1)}
.head-cta{
  margin-left:6px;padding:10px 22px;border-radius:999px;font-size:13.5px;font-weight:600;
  color:#1b1306;background:linear-gradient(135deg,#e6cd9b,#c9a063 60%,#b0854a);
  box-shadow:0 10px 24px -14px rgba(201,160,99,.8);transition:transform .25s ease,box-shadow .25s ease;
  white-space:nowrap;
}
.head-cta:hover{transform:translateY(-2px);box-shadow:0 16px 30px -14px rgba(201,160,99,.9)}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.05);border-radius:12px;position:relative;padding:0;
}
.nav-toggle span{
  position:absolute;left:12px;width:20px;height:1.5px;background:#fff;border-radius:2px;
  transition:transform .3s ease,opacity .2s ease,top .3s ease;
}
.nav-toggle span:nth-child(1){top:17px}
.nav-toggle span:nth-child(2){top:25px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){top:21px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){top:21px;transform:rotate(-45deg)}
body.nav-open .site-head{background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none;box-shadow:none;border-bottom:0}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:100svh;display:flex;align-items:center;
  padding:calc(var(--head-h) + 66px) 0 74px;
  background:#050a12;overflow:hidden;isolation:isolate;color:#fff;
}
.hero-bg{
  position:absolute;inset:0;z-index:-3;
  background:
    linear-gradient(90deg,rgba(4,9,16,.97) 0%,rgba(4,9,16,.9) 43%,rgba(4,9,16,.55) 78%,rgba(4,9,16,.42) 100%),
    #0a1424;
  background-image:
    linear-gradient(90deg,rgba(4,9,16,.97) 0%,rgba(4,9,16,.9) 43%,rgba(4,9,16,.55) 78%,rgba(4,9,16,.42) 100%),
    url("../assets/hero-bg.jpg");
  background-size:cover;background-position:center right;background-repeat:no-repeat;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(120% 90% at 20% 20%,rgba(10,20,36,0) 0%,rgba(4,9,16,.55) 100%);
}
.hero-grid{
  position:absolute;inset:0;z-index:-2;opacity:.34;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:78px 78px;
  mask-image:radial-gradient(80% 70% at 50% 40%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(80% 70% at 50% 40%,#000 20%,transparent 78%);
}
.aurora{position:absolute;z-index:-2;border-radius:50%;filter:blur(90px);opacity:.5;pointer-events:none;will-change:transform}
.aurora--a{width:560px;height:560px;left:-160px;top:-120px;background:radial-gradient(circle,rgba(47,185,179,.4),transparent 68%);animation:driftA 22s ease-in-out infinite alternate}
.aurora--b{width:620px;height:620px;right:-180px;bottom:-220px;background:radial-gradient(circle,rgba(201,160,99,.34),transparent 68%);animation:driftB 26s ease-in-out infinite alternate}
.aurora--c{width:380px;height:380px;right:26%;top:6%;background:radial-gradient(circle,rgba(62,120,220,.24),transparent 70%);animation:driftA 18s ease-in-out infinite alternate-reverse}
@keyframes driftA{to{transform:translate3d(52px,38px,0) scale(1.12)}}
@keyframes driftB{to{transform:translate3d(-46px,-32px,0) scale(1.08)}}
.hero-inner{
  width:min(var(--wrap),calc(100% - 48px));margin-inline:auto;
  display:grid;grid-template-columns:1.06fr .94fr;gap:64px;align-items:center;position:relative;z-index:2;
}
.hero-inner>*,.two-col>*,.method-grid>*,.why-grid>*,.grid-2>*,.grid-3>*,.contact-grid>*,.flow>*,.faq-grid>*,.pain-grid>*,.svc-grid>*,.ind-grid>*,.metric-grid>*{min-width:0}
.ai-card{width:100%}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:12px;padding:8px 16px 8px 10px;border-radius:999px;
  border:1px solid rgba(230,205,155,.3);background:rgba(230,205,155,.06);
  font-size:12.5px;letter-spacing:.16em;color:var(--gold-2);
}
.hero-eyebrow .pulse{width:6px;height:6px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 0 rgba(47,185,179,.7);animation:pulse 2.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(47,185,179,.6)}70%{box-shadow:0 0 0 9px rgba(47,185,179,0)}100%{box-shadow:0 0 0 0 rgba(47,185,179,0)}}
.hero h1{
  margin-top:26px;font-size:clamp(34px,4.4vw,62px);line-height:1.18;font-weight:800;
  letter-spacing:-.015em;text-wrap:balance;
}
.hero h1 .line{display:block}
.hero h1 .grad{
  background:linear-gradient(100deg,#f4e6c8 4%,#dcb877 42%,#c9a063 68%,#f0dcb4 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin-top:22px;max-width:590px;color:rgba(236,241,248,.76);font-size:17px;line-height:1.9;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:32px;padding-top:26px;border-top:1px solid rgba(255,255,255,.1)}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(236,241,248,.72)}
.hero-points svg{width:15px;height:15px;color:var(--teal);flex-shrink:0}

/* Hero 右侧 AI 示意卡 */
.ai-card{
  position:relative;padding:26px;border-radius:24px;
  background:linear-gradient(160deg,rgba(19,31,50,.92),rgba(9,16,28,.92));
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 44px 90px -40px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  animation:floatY 8s ease-in-out infinite;
}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.ai-card::before{
  content:"";position:absolute;inset:-1px;border-radius:25px;padding:1px;pointer-events:none;
  background:linear-gradient(150deg,rgba(230,205,155,.55),rgba(47,185,179,.2) 40%,transparent 70%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.ai-card-head{
  display:flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:.1em;
  color:rgba(255,255,255,.55);text-transform:uppercase;
}
.ai-card-head .dot{width:7px;height:7px;border-radius:50%;background:var(--teal)}
.ai-card-head .tag{margin-left:auto;padding:3px 9px;border:1px solid rgba(255,255,255,.16);border-radius:999px;font-size:10.5px;letter-spacing:.06em;text-transform:none;color:rgba(255,255,255,.5)}
.ai-q{
  margin-top:18px;padding:13px 16px;border-radius:12px 12px 12px 4px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.08);
  font-size:14.5px;color:#eaf0f7;
}
.ai-a{margin-top:14px;padding:18px 18px 16px;border-radius:4px 14px 14px 14px;background:rgba(47,185,179,.07);border:1px solid rgba(47,185,179,.2)}
.ai-a p{font-size:14px;line-height:1.9;color:rgba(235,242,250,.86)}
.ai-a p b{color:var(--gold-2);font-weight:600}
.ai-src{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:14px;padding-top:12px;border-top:1px dashed rgba(255,255,255,.14);font-size:11px;color:rgba(255,255,255,.45)}
.ai-src b{padding:3px 9px;border-radius:6px;background:rgba(255,255,255,.07);font-weight:500;color:rgba(255,255,255,.72)}
.ai-float{
  position:absolute;padding:8px 14px;border-radius:10px;font-size:11.5px;letter-spacing:.04em;
  background:rgba(9,16,28,.9);border:1px solid rgba(230,205,155,.3);color:var(--gold-2);
  box-shadow:0 16px 30px -18px rgba(0,0,0,.9);white-space:nowrap;
}
.ai-float--1{right:18px;top:-16px;animation:floatY 6s ease-in-out infinite .6s}
.ai-float--2{left:18px;bottom:-16px;animation:floatY 7s ease-in-out infinite 1.2s;border-color:rgba(47,185,179,.35);color:#8ee6e1}
.ai-note{margin-top:14px;font-size:11px;color:rgba(255,255,255,.35);text-align:right}

/* ---------- 关键词滚动条 ---------- */
.trust-strip{background:#050a12;border-top:1px solid rgba(255,255,255,.07);border-bottom:1px solid rgba(255,255,255,.07);padding:18px 0;overflow:hidden;position:relative}
.trust-strip::before,.trust-strip::after{content:"";position:absolute;top:0;bottom:0;width:110px;z-index:2;pointer-events:none}
.trust-strip::before{left:0;background:linear-gradient(90deg,#050a12,transparent)}
.trust-strip::after{right:0;background:linear-gradient(-90deg,#050a12,transparent)}
.marquee{display:flex;width:max-content;animation:marquee 38s linear infinite}
.trust-strip:hover .marquee{animation-play-state:paused}
.marquee ul{display:flex;align-items:center;gap:0}
.marquee li{display:flex;align-items:center;gap:26px;padding-right:26px;font-size:13.5px;letter-spacing:.14em;color:rgba(255,255,255,.5);white-space:nowrap}
.marquee li::after{content:"";width:4px;height:4px;border-radius:50%;background:var(--gold);opacity:.68}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- 痛点卡 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pain-card{
  position:relative;padding:30px 28px;border-radius:var(--radius);background:#fff;
  border:1px solid var(--line);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  overflow:hidden;
}
.pain-card::after{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--gold),transparent 70%);
  transform:scaleX(0);transform-origin:left;transition:transform .4s ease;
}
.pain-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#d6cbb4}
.pain-card:hover::after{transform:scaleX(1)}
.pain-ico{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(150deg,#f7efe0,#efe4cf);color:var(--gold-deep);border:1px solid #eadfc8;
}
.pain-ico svg{width:22px;height:22px}
.pain-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.pain-card p{font-size:14px;color:var(--muted);line-height:1.85}
.pain-idx{position:absolute;right:22px;top:22px;font-size:12px;letter-spacing:.1em;color:#c9c0ad}

/* ---------- 服务矩阵 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc{
  position:relative;padding:34px 30px 30px;border-radius:var(--radius);
  background:linear-gradient(170deg,#fff 0%,#fdfbf6 100%);
  border:1px solid var(--line);transition:transform .3s ease,box-shadow .3s ease;
  display:flex;flex-direction:column;
}
.svc:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.svc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.svc-ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--ink-2);color:var(--gold-2)}
.svc-ico svg{width:23px;height:23px}
.svc-no{font-size:12px;letter-spacing:.18em;color:#b8ad96}
.svc h3{font-size:19px;font-weight:700;letter-spacing:.01em}
.svc-desc{font-size:14px;color:var(--muted);margin-top:10px;line-height:1.85}
.svc-list{margin-top:18px;padding-top:16px;border-top:1px dashed #e5ddcb;display:grid;gap:8px}
.svc-list li{position:relative;padding-left:17px;font-size:13.5px;color:#39424e}
.svc-list li::before{content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;border-radius:50%;background:var(--gold)}
.svc-link{margin-top:22px;display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:600;color:var(--gold-deep)}
.svc-link svg{width:14px;height:14px;transition:transform .25s ease}
.svc-link:hover svg{transform:translateX(4px)}

/* ---------- GEO 方法 ---------- */
.method-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:66px;align-items:start}
.method-aside{position:sticky;top:110px}
.method-aside h2{font-size:clamp(26px,3vw,40px);line-height:1.3;margin-top:16px;font-weight:700}
.method-aside p{color:var(--muted);margin-top:16px;font-size:15.5px}
.method-note{
  margin-top:28px;padding:20px 22px;border-left:2px solid var(--gold);
  background:linear-gradient(90deg,#f4eddd,rgba(244,237,221,0));font-size:14px;color:#4a5462;
}
.method-note b{color:var(--text)}
.steps{display:grid;gap:14px}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:20px;align-items:start;
  padding:26px 26px 24px;border-radius:16px;background:#fff;border:1px solid var(--line);
  transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease;
}
.step:hover{border-color:#dbc9a7;transform:translateX(4px);box-shadow:0 20px 40px -30px rgba(20,30,45,.6)}
.step-num{
  width:56px;height:56px;border-radius:50%;display:grid;place-items:center;
  font-size:15px;font-weight:700;color:var(--gold-deep);
  background:radial-gradient(circle at 30% 25%,#fff,#f6efdf);border:1px solid #e7dcc4;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17.5px;font-weight:700;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.step h3 span{font-size:11px;font-weight:500;letter-spacing:.08em;color:#9a8f7a;padding:2px 8px;border:1px solid #e8dfcc;border-radius:999px}
.step p{font-size:14px;color:var(--muted);margin-top:7px;line-height:1.85}

/* ---------- 行业 ---------- */
.ind-banner{
  position:relative;border-radius:24px;overflow:hidden;min-height:300px;margin-bottom:26px;
  display:flex;align-items:flex-end;padding:34px;color:#fff;
  background:linear-gradient(90deg,rgba(6,12,22,.92),rgba(6,12,22,.35)),
    url("../assets/factory.jpg") center/cover no-repeat,#0d1a2c;
  box-shadow:var(--shadow);
}
.ind-banner h3{font-size:clamp(20px,2.4vw,28px);font-weight:700;max-width:640px}
.ind-banner p{font-size:14px;color:rgba(255,255,255,.72);margin-top:8px;max-width:620px}
.ind-banner .tag-row{margin-top:14px}
.ind-banner .ind-note{margin-top:10px;font-size:11.5px;color:rgba(255,255,255,.45);letter-spacing:.04em}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag-row span{font-size:12px;padding:4px 12px;border-radius:999px;border:1px solid rgba(230,205,155,.35);color:var(--gold-2);background:rgba(230,205,155,.07)}
.ind-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ind-card{padding:26px;border-radius:16px;background:#fff;border:1px solid var(--line);transition:transform .3s ease,box-shadow .3s ease}
.ind-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.ind-card h3{font-size:16.5px;font-weight:700}
.ind-card p{font-size:13.5px;color:var(--muted);margin-top:9px;line-height:1.8}
.ind-card .mini{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.ind-card .mini span{font-size:11.5px;color:#6b6455;background:#f4efe2;border-radius:5px;padding:3px 8px}

/* ---------- 深色信任区 ---------- */
.why{position:relative;overflow:hidden}
.why::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(90% 80% at 85% 10%,rgba(201,160,99,.14),transparent 60%),
             radial-gradient(70% 70% at 10% 90%,rgba(47,185,179,.1),transparent 65%);
}
.why .wrap{position:relative;z-index:1}
.why-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:64px;align-items:center}
.why h2{color:#fff;font-size:clamp(27px,3.2vw,42px);line-height:1.3;margin-top:16px;font-weight:700}
.why-lead{color:#a9b4c4;margin-top:18px;font-size:15.5px}
.why-list{display:grid;gap:16px}
.why-item{display:grid;grid-template-columns:52px 1fr;gap:18px;padding:22px 24px;border-radius:14px;background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.09);transition:background .3s ease,border-color .3s ease}
.why-item:hover{background:rgba(255,255,255,.06);border-color:rgba(230,205,155,.28)}
.why-item .k{font-size:13px;font-weight:700;color:var(--gold-2);letter-spacing:.04em;padding-top:3px;font-variant-numeric:tabular-nums}
.why-item h3{color:#fff;font-size:16px;font-weight:600}
.why-item p{color:#94a1b3;font-size:13.5px;line-height:1.8;margin-top:5px}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:38px;padding-top:32px;border-top:1px solid rgba(255,255,255,.1)}
.stat b{display:block;font-size:clamp(28px,3.4vw,42px);line-height:1;color:var(--gold-2);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat span{display:block;margin-top:10px;font-size:12.5px;color:#8e9bad;letter-spacing:.06em}

/* ---------- 交付流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;counter-reset:flow}
.flow-item{
  position:relative;padding:28px 26px;border-radius:16px;background:#fff;border:1px solid var(--line);
  transition:transform .3s ease,box-shadow .3s ease;
}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.flow-item .n{font-size:12px;letter-spacing:.14em;color:#a89b83;font-weight:600}
.flow-item h3{font-size:16.5px;margin-top:12px;font-weight:700}
.flow-item p{font-size:13.5px;color:var(--muted);margin-top:8px;line-height:1.8}
.flow-item .out{margin-top:14px;padding-top:12px;border-top:1px dashed #e6ddca;font-size:12.5px;color:#6d6250}
.flow-item .out b{color:var(--gold-deep);font-weight:600}

/* ---------- 指标 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metric{padding:28px 24px;border-radius:16px;background:var(--ink-2);border:1px solid rgba(255,255,255,.09);position:relative;overflow:hidden}
.metric::after{content:"";position:absolute;right:-40px;top:-40px;width:110px;height:110px;border-radius:50%;background:radial-gradient(circle,rgba(201,160,99,.18),transparent 70%)}
.metric .m-no{font-size:12px;letter-spacing:.16em;color:rgba(230,205,155,.7)}
.metric h3{color:#fff;font-size:17px;font-weight:600;margin-top:14px}
.metric p{color:#94a1b3;font-size:13.5px;line-height:1.8;margin-top:8px}
.metric-note{margin-top:22px;font-size:13px;color:#8d99aa;display:flex;align-items:flex-start;gap:8px}
.metric-note svg{width:15px;height:15px;flex-shrink:0;margin-top:3px;color:var(--gold-2)}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item[open]{border-color:#ddcfb4;box-shadow:0 18px 38px -34px rgba(20,30,45,.7)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:21px 54px 21px 22px;position:relative;
  font-size:15px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;margin-top:-6px;
  border-right:1.5px solid var(--gold-deep);border-bottom:1.5px solid var(--gold-deep);
  transform:rotate(45deg);transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(225deg);margin-top:-2px}
.faq-item summary:hover{color:var(--gold-deep)}
.faq-a{padding:0 22px 22px;font-size:14px;color:var(--muted);line-height:1.9}
.faq-a p+p{margin-top:9px}
.faq-a b{color:#37404c;font-weight:600}
.faq-foot{margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;justify-content:space-between;font-size:13.5px;color:var(--muted)}
.faq-foot a{color:var(--gold-deep);font-weight:600;border-bottom:1px solid rgba(168,126,65,.35)}

/* ---------- 联系 ---------- */
.contact{position:relative;overflow:hidden;background:linear-gradient(160deg,#08101d 0%,#0a1424 55%,#070d17 100%);color:#fff}
.contact::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(60% 60% at 80% 15%,rgba(201,160,99,.14),transparent 60%),
             radial-gradient(50% 50% at 12% 85%,rgba(47,185,179,.1),transparent 60%);
}
.contact .wrap{position:relative;z-index:1}
.contact-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap;margin-bottom:46px}
.contact-head h2{font-size:clamp(26px,3.2vw,42px);font-weight:700;margin-top:14px;line-height:1.3}
.contact-head p{color:#a3aebd;font-size:15px;margin-top:12px;max-width:560px}
.contact-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:26px;align-items:stretch}
.contact-panel{
  padding:36px;border-radius:22px;border:1px solid rgba(255,255,255,.1);
  background:rgba(255,255,255,.035);display:grid;grid-template-columns:1fr 1fr;gap:24px 30px;align-content:start;
}
.contact-item dt{font-size:11.5px;letter-spacing:.12em;color:rgba(230,205,155,.7);margin-bottom:7px}
.contact-item dd{font-size:15.5px;color:#eef2f7;line-height:1.6;word-break:break-word}
.contact-item dd a{transition:color .2s ease;border-bottom:1px solid rgba(255,255,255,.12)}
.contact-item dd a:hover{color:var(--gold-2);border-color:rgba(230,205,155,.5)}
.contact-panel--light .contact-item dt{color:var(--gold-deep)}
.contact-panel--light .contact-item dd{color:var(--text)}
.contact-panel--light .contact-item dd a{border-color:rgba(23,32,43,.14)}
.contact-panel--light .contact-item dd a:hover{color:var(--gold-deep);border-color:rgba(168,126,65,.5)}
.contact-item--full{grid-column:1/-1}
.qr-card{
  padding:28px;border-radius:22px;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.1);
  display:flex;flex-direction:column;align-items:center;text-align:center;
}
.qr-title{font-size:15.5px;font-weight:600;color:#fff;margin-bottom:22px}
.qr-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;width:100%}
.qr-item{display:flex;flex-direction:column;align-items:center;gap:10px}
.qr-box{background:#fff;padding:10px;border-radius:12px;box-shadow:0 16px 32px -22px rgba(0,0,0,.8)}
.qr-box img{width:140px;height:140px;object-fit:cover;border-radius:5px;background:#f2f2f2;display:block}
.qr-label{font-size:12.5px;color:#c6cfdb;margin:0;font-weight:500}

/* ---------- 页脚 ---------- */
.site-foot{background:#04080f;color:#8a96a6;padding:62px 0 0;font-size:13.5px;border-top:1px solid rgba(255,255,255,.07)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:40px;padding-bottom:46px}
.foot-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.foot-brand img{width:34px;height:34px}
.foot-brand span{color:#fff;font-size:17px;font-weight:700;letter-spacing:.05em}
.foot-brand sup{font-size:8px;color:var(--gold-2);vertical-align:super}
.foot-brand em{font-style:normal;font-size:12px;color:#9aa6b6;font-weight:400}
.site-foot p{line-height:1.9;color:#7d899a}
.foot-col h3{color:#e7ecf3;font-size:13.5px;font-weight:600;letter-spacing:.08em;margin-bottom:16px}
.foot-col li{margin-bottom:9px}
.foot-col a{color:#8a96a6;transition:color .2s ease}
.foot-col a:hover{color:var(--gold-2)}
.foot-contact li{line-height:1.8;margin-bottom:8px}
.foot-contact a{color:#c6cfdb}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.07);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:#697585;
}
.foot-bottom a{color:#8e9aab}
.foot-bottom a:hover{color:var(--gold-2)}
.foot-bottom .sep{opacity:.4;margin:0 6px}
.foot-seo{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 子页 ---------- */
.page-hero{
  position:relative;padding:calc(var(--head-h) + 72px) 0 74px;color:#fff;
  background:
    radial-gradient(80% 90% at 82% 0%,rgba(201,160,99,.16),transparent 62%),
    radial-gradient(60% 80% at 8% 100%,rgba(47,185,179,.1),transparent 62%),
    linear-gradient(150deg,#08101d,#0a1524 60%,#070d17);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 80% at 50% 30%,#000,transparent 80%);
  -webkit-mask-image:radial-gradient(70% 80% at 50% 30%,#000,transparent 80%);
}
.page-hero .wrap{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:#8d9aab;margin-bottom:24px}
.breadcrumb a{color:#aab5c4;transition:color .2s}
.breadcrumb a:hover{color:var(--gold-2)}
.breadcrumb .sep{opacity:.45}
.breadcrumb [aria-current]{color:var(--gold-2)}
.page-hero h1{font-size:clamp(30px,4vw,52px);line-height:1.25;font-weight:800;letter-spacing:-.015em;max-width:900px;text-wrap:balance}
.page-hero .lead{margin-top:20px;max-width:700px;color:#b2bdcb;font-size:16.5px;line-height:1.9}
.page-hero .tag-row{margin-top:26px}
.page-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.page-hero .hero-points{margin-top:30px}

.prose{max-width:800px}
.prose h2{font-size:clamp(24px,2.8vw,34px);line-height:1.35;margin:46px 0 16px;font-weight:700}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:19px;margin:30px 0 10px;font-weight:700}
.prose p{color:#47515f;font-size:15.5px;line-height:1.95;margin-bottom:14px}
.prose ul{margin:14px 0 20px;display:grid;gap:9px}
.prose li{position:relative;padding-left:20px;color:#47515f;font-size:15px;line-height:1.85}
.prose li::before{content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--gold)}
.prose strong{color:#1e2834}
.prose .note{padding:18px 22px;border-left:2px solid var(--gold);background:#f4eddd;border-radius:0 10px 10px 0;font-size:14px;color:#4d5867;margin:22px 0}
.two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:start}
.side-card{position:sticky;top:110px;padding:28px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:6px}
.side-card p{font-size:13.5px;color:var(--muted);line-height:1.8;margin-bottom:16px}
.side-card .btn{width:100%}
.side-card dl{margin-top:20px;padding-top:18px;border-top:1px dashed #e5ddcb;display:grid;gap:12px}
.side-card dt{font-size:11.5px;letter-spacing:.1em;color:#a89b83}
.side-card dd{font-size:14px;color:#2f3945}
.side-list{display:grid;gap:10px}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px;border-radius:10px;background:#faf8f2;border:1px solid #ebe4d5;font-size:13.5px;color:#3c4653;transition:background .2s,border-color .2s}
.side-list a:hover{background:#f4eee0;border-color:#ddcfb4;color:var(--gold-deep)}
.side-list svg{width:14px;height:14px;flex-shrink:0;color:var(--gold-deep)}

/* 子页通用内容块 */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.info-card{padding:30px 28px;border-radius:18px;background:#fff;border:1px solid var(--line)}
.info-card h3{font-size:17.5px;font-weight:700;margin-bottom:10px}
.info-card p{font-size:14px;color:var(--muted);line-height:1.85}
.info-card ul{margin-top:14px;display:grid;gap:8px}
.info-card li{position:relative;padding-left:16px;font-size:13.5px;color:#47505d;line-height:1.8}
.info-card li::before{content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;border-radius:50%;background:var(--gold)}
.info-card .idx{font-size:12px;letter-spacing:.14em;color:#b3a58c;margin-bottom:12px;display:block}
.cta-band{
  border-radius:24px;padding:44px;background:linear-gradient(120deg,#0b1422,#12203a 60%,#0a1220);
  color:#fff;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  position:relative;overflow:hidden;border:1px solid rgba(255,255,255,.09);
}
.cta-band::after{content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(201,160,99,.24),transparent 68%)}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;position:relative;z-index:1}
.cta-band p{color:#a6b2c1;font-size:14px;margin-top:8px;position:relative;z-index:1}
.cta-band .btn{position:relative;z-index:1}

/* 网站地图页 */
.map-section{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.map-card{padding:32px;border-radius:18px;background:#fff;border:1px solid var(--line)}
.map-card h2{font-size:19px;font-weight:700;margin-bottom:6px}
.map-card p{font-size:13.5px;color:var(--muted);margin-bottom:18px}
.map-card ul{display:grid;gap:2px}
.map-card a{display:flex;align-items:baseline;gap:10px;padding:8px 0;border-bottom:1px dashed #ece5d7;font-size:14.5px;color:#2c3642;transition:color .2s}
.map-card a:last-child{border-bottom:0}
.map-card a:hover{color:var(--gold-deep)}
.map-card a span{font-size:12px;color:#9b907c;margin-left:auto;white-space:nowrap}
.seo-files{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
.seo-file{padding:20px 22px;border-radius:14px;background:#faf8f2;border:1px solid #eae2d3}
.seo-file b{display:block;font-size:14px;color:#26303c}
.seo-file span{display:block;font-size:12.5px;color:var(--muted);margin-top:4px}
.seo-file a{display:inline-block;margin-top:10px;font-size:12.5px;color:var(--gold-deep);font-weight:600}

/* 返回顶部 */
.to-top{
  position:fixed;right:22px;bottom:24px;z-index:100;width:46px;height:46px;border-radius:50%;
  background:rgba(10,18,32,.9);border:1px solid rgba(230,205,155,.35);color:var(--gold-2);
  display:grid;place-items:center;opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s,visibility .3s,transform .3s,background .3s;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.to-top.is-on{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:rgba(201,160,99,.9);color:#141006}
.to-top svg{width:18px;height:18px}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.16,.84,.3,1),transform .8s cubic-bezier(.16,.84,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.08s}
.reveal[data-delay="2"]{transition-delay:.16s}
.reveal[data-delay="3"]{transition-delay:.24s}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .head-inner{gap:20px}
  .brand-text em{display:none}
  .brand-divider{display:none}
  .nav a{padding:10px 10px;font-size:14px}
  .hero-inner{gap:44px}
  .ai-float--1{right:-10px}
  .ai-float--2{left:-12px}
}
@media (max-width:1080px){
  .nav,.head-cta{display:none}
  .nav-toggle{display:block}
  .nav{
    position:fixed;left:0;right:0;top:0;bottom:0;margin:0;z-index:-1;
    background:rgba(5,10,18,.98);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    flex-direction:column;justify-content:center;align-items:flex-start;gap:0;
    padding:100px 40px 40px;opacity:0;visibility:hidden;transform:translateY(-16px);
    transition:opacity .3s ease,visibility .3s ease,transform .3s ease;
  }
  .nav.is-open{opacity:1;visibility:visible;transform:none;display:flex;z-index:-1}
  .nav a{display:block;width:100%;font-size:24px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.08);color:#fff;font-weight:500}
  .nav a::after{display:none}
  .nav a.is-active{color:var(--gold-2)}
  .nav-toggle{z-index:2}
  .hero{min-height:auto;padding-top:calc(var(--head-h) + 58px)}
  .hero-inner{grid-template-columns:1fr;gap:42px}
  .ai-card{max-width:560px;margin-inline:auto;animation:none}
  .ai-float{display:none}
  .pain-grid,.svc-grid,.ind-grid,.flow,.metric-grid{grid-template-columns:repeat(2,1fr)}
  .method-grid,.why-grid,.two-col{grid-template-columns:1fr;gap:36px}
  .method-aside,.side-card{position:static}
  .contact-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px}
  .map-section{grid-template-columns:1fr}
  .seo-files{grid-template-columns:1fr 1fr}
  .contact-panel{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  :root{--head-h:70px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .wrap,.head-inner,.hero-inner{width:calc(100% - 36px)}
  .brand-mark{width:32px;height:32px}
  .brand-text strong{font-size:16.5px}
  .brand-text em{display:none}
  .hero{padding-top:104px}
  .hero h1{font-size:clamp(30px,8.4vw,44px)}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 auto;padding:0 20px;font-size:14px}
  .hero-points{gap:8px 16px}
  .ai-card{padding:20px;border-radius:18px}
  .ai-a p,.ai-q{font-size:13.5px}
  .pain-grid,.svc-grid,.ind-grid,.flow,.metric-grid,.grid-2,.grid-3{grid-template-columns:1fr}
  .sec-head{margin-bottom:36px}
  .ind-banner{padding:24px;min-height:260px}
  .contact-panel{grid-template-columns:1fr;padding:26px}
  .contact-grid{gap:18px}
  .qr-card{padding:24px}
  .qr-grid{gap:14px}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .faq-grid{grid-template-columns:1fr}
  .cta-band{padding:30px}
  .seo-files{grid-template-columns:1fr}
  .map-card{padding:24px}
  .page-hero{padding-top:calc(var(--head-h) + 52px);padding-bottom:52px}
  .why .stat-row{grid-template-columns:1fr 1fr}
  .stat:last-child{grid-column:1/-1}
  .two-col{gap:30px}
  .ai-float{display:none}
  .to-top{right:14px;bottom:16px;width:42px;height:42px}
}
@media (max-width:420px){
  .brand-text strong{font-size:15.5px}
  .hero h1{font-size:29px}
  .hero-eyebrow{font-size:11px;letter-spacing:.1em}
  .stat-row{grid-template-columns:1fr 1fr}
  .qr-box img{width:120px;height:120px}
  .qr-label{font-size:11.5px}
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}