:root{
  --ink-950:#071630;
  --ink-900:#0A1F45;
  --ink-850:#0C2652;
  --ink-800:#0E2E5F;
  --ink-700:#123D8F;
  --ink-600: #1F6FFF;
  --ink-400: #4FB8FF;
  --steel:#164BAE;
  --steel-2:#5B93CE;
  --gold:#C9A24B;
  --gold-light:#E4C87F;
  --gold-deep:#A87F2E;
  --paper:#f5f8fe;
  --paper-2:#EEF2F7;
  --ink-text:#13233D;
  --ink-2:#5A6E8C;
  --ink-3:#8A9BB2;
  --white:#FFFFFF;
  --line:rgba(12,27,51,.10);
  --line-dark:rgba(255,255,255,.14);
  --r-lg:12px;
  --r-md:10px;
  --shadow-card:0 8px 30px rgba(12,27,51,.07);
  --shadow-deep:0 20px 52px rgba(7,16,31,.40);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:100%;}
body{font-family:var(--font);color:var(--ink-text);background:var(--paper);line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
::selection{background:rgba(201,162,75,.25)}

.container{max-width:80rem;margin:0 auto;padding:0 28px}
.section{padding:100px 0}

/* 眉标：鎏金方块 + 字距 */
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-size:13px;font-weight:600;letter-spacing:.26em;color:var(--gold-deep);text-transform:uppercase}
.eyebrow::before{content:"";width:9px;height:9px;background:var(--gold);transform:rotate(45deg)}
.section.dark .eyebrow{color:var(--gold-light)}
.section.dark .eyebrow::before{background:var(--gold-light)}

/* 标题：衬线展示 + 鎏金强调 */
.h2{font-family:var(--font);font-size:clamp(30px,3.6vw,42px);font-weight:700;line-height:1.32;letter-spacing:.02em;margin:20px 0 18px;color:var(--ink-text)}
.h2 .accent{color:var(--gold);white-space:nowrap}
.section.dark .h2{color:#fff}
.section.dark .h2 .accent{color:var(--gold-light)}
.lead{font-size:16.5px;color:var(--ink-2);max-width:800px;line-height:2}
.section.dark .lead{color:rgba(255,255,255,.7)}
.sec-head{margin-bottom:52px}

/* 金色数据线（签名元素） */
.goldline{position:relative;height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent);margin:34px 0}
.goldline i{position:absolute;top:-3px;width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px rgba(201,162,75,.18)}
.goldline i:nth-child(1){left:0}
.goldline i:nth-child(2){left:50%;transform:translateX(-50%)}
.goldline i:nth-child(3){right:0}
.goldline i:nth-child(1),.goldline i:nth-child(3){animation:pulse 3.2s ease-in-out infinite}
.goldline i:nth-child(2){animation:pulse 3.2s ease-in-out 1.6s infinite}
@keyframes pulse{0%,100%{opacity:.4}50%{opacity:1}}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:15px 30px;border-radius:6px;font-size:15.5px;font-weight:600;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;min-height:52px;letter-spacing:.04em}
.btn:hover{transform:translateY(-2px)}
.btn-gold{background:linear-gradient(120deg,var(--gold-light),var(--gold));color:var(--ink-900);box-shadow:0 10px 26px rgba(201,162,75,.35)}
.btn-gold:hover{color:var(--ink-900);background:linear-gradient(120deg,#EED694,var(--gold))}
.btn-ghost-dark{background:rgba(255,255,255,.06);color:#fff;border:1px solid rgba(255,255,255,.3)}
.btn-ghost-dark:hover{background:rgba(255,255,255,.12)}

/* ===== 顶栏（墨蓝玻璃） ===== */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.08);transition:box-shadow .25s ease}
.header.scrolled{box-shadow:0 8px 30px rgba(7,16,31,.35)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:12px}
.brand>div{display:flex;flex-direction:column;gap:4px;}
.brand-logo{height:40px!important;}
.brand-name{font-size:18px;font-weight:bold;letter-spacing:.02em;color:var(--navy-900);line-height:1.1}
.brand-tag{width: 40px;color: var(--ink-700);background: #ebf2fc;border: 1px solid rgba(31,111,255,.16);border-radius: 999px;align-items: center;min-height: 16px;padding: 1px 7px;font-size: 10px;font-weight: 900;line-height: 1;display: inline-flex;}
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-size:14.5px;font-weight:500;color:var(--ink);position:relative;padding:6px 0}
.nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1.5px;background:var(--gold);transition:width .25s ease}
.nav a:hover{color:var(--gold)}
.nav a:hover::after{width:100%}
.header-right{display:flex;align-items:center;gap:22px}
.phone{display:flex;align-items:center;gap:9px;font-weight:700;font-size:15.5px;color:var(--ink)}
.phone svg{color:var(--gold-light)}
.menu-btn{display:none;width:44px;height:44px;border-radius:8px;border:1px solid rgba(255,255,255,.22);align-items:center;justify-content:center;color:#fff}

.mobile-menu{display:none;background:var(--ink-900);border-bottom:1px solid rgba(255,255,255,.08);padding:8px 20px 16px}
.mobile-menu:not([hidden]){display:block}
.mobile-menu a{display:block;padding:13px 6px;font-size:15px;font-weight:500;color:rgba(255,255,255,.85);border-bottom:1px solid rgba(255,255,255,.08)}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu a:hover{color:var(--gold-light)}

/* ===== Hero（居中版式 + 蓝图网格 + 三层架构） ===== */
.hero{position:relative;background:radial-gradient(900px 520px at 50% -18%,rgba(201,162,75,.16),transparent 60%),radial-gradient(1000px 600px at 88% 118%,rgba(46,111,183,.22),transparent 55%),linear-gradient(165deg,var(--ink-950) 0%,var(--ink-900) 45%,var(--ink-850) 100%);color:#fff;overflow:hidden;padding:110px 0 0;text-align:center}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
.hero-ring{position:absolute;pointer-events:none}
.hero-ring.r1{width:640px;height:640px;left:50%;top:-300px;transform:translateX(-50%);border-radius:50%;border:1px solid rgba(201,162,75,.14)}
.hero-ring.r2{width:440px;height:440px;left:50%;top:-220px;transform:translateX(-50%);border-radius:50%;border:1px dashed rgba(201,162,75,.18)}
.hero-inner{position:relative;z-index:2;max-width:920px;margin:0 auto}
.hero-eyebrow{display:inline-flex;align-items:center;gap:12px;padding:9px 18px;border-radius:4px;border:1px solid rgba(201,162,75,.4);background:rgba(201,162,75,.08);font-size:13px;font-weight:600;letter-spacing:.24em;color:var(--gold-light)}
.hero-eyebrow::before{content:"";width:7px;height:7px;background:var(--gold);transform:rotate(45deg)}
.hero h1{font-family:var(--font);font-size:clamp(34px,4.6vw,56px);font-weight:700;line-height:1.3;letter-spacing:.02em;margin:28px 0 24px;color:#fff;}
.hero h1 .hl{color:transparent;background:linear-gradient(100deg,var(--gold-light),var(--gold) 60%,var(--steel-2));-webkit-background-clip:text;background-clip:text}
.hero-sub{font-size:17px;line-height:2;color:rgba(255,255,255,.75);max-width:700px;margin:0 auto}
.hero-cta{display:flex;gap:16px;margin-top:38px;justify-content:center;flex-wrap:wrap}
.hero-chips{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:38px}
.hchip{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;font-weight:600;color:rgba(255,255,255,.85);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);padding:9px 18px;border-radius:4px}
.hchip .sq{width:7px;height:7px;background:var(--gold);transform:rotate(45deg)}

/* 三层能力架构 */
.arch-wrap{position:relative;z-index:2;margin-top:64px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.1);border-radius:12px 12px 0 0;padding:34px 36px 40px;backdrop-filter:blur(4px)}
.arch-label{display:flex;align-items:center;gap:12px;font-size:12.5px;font-weight:600;letter-spacing:.24em;color:rgba(255,255,255,.5);margin-bottom:22px}
.arch-label::before{content:"";width:22px;height:1.5px;background:var(--gold)}
.arch-row{display:grid;grid-template-columns:200px 1fr;gap:0;border-radius:8px;overflow:hidden;margin-bottom:12px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.04)}
.arch-row:last-child{margin-bottom:0}
.arch-name{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:18px 14px;background:rgba(201,162,75,.1);border-right:1px solid rgba(255,255,255,.1)}
.arch-name b{font-family:var(--font);font-size:17px;font-weight:700;color:var(--gold-light);letter-spacing:.06em}
.arch-name span{font-size:11px;color:rgba(255,255,255,.5);letter-spacing:.14em}
.arch-items{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:16px 18px}
.arch-item{font-size:13px;font-weight:600;color:rgba(255,255,255,.88);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);padding:8px 14px;border-radius:4px}
.arch-item.lv1{color:#fff;background:linear-gradient(120deg,rgba(46,111,183,.5),rgba(46,111,183,.22));border-color:rgba(91,147,206,.45)}
.arch-item.lv2{color:#fff;background:rgba(201,162,75,.14);border-color:rgba(201,162,75,.4)}

/* ===== 通用卡片 ===== */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin:44px 0 0}
.pain-card{background:#fff;border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:var(--r-md);padding:30px 26px;box-shadow:var(--shadow-card);transition:transform .25s ease,box-shadow .25s ease}
.pain-card:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(12,27,51,.12)}
.pain-ico{width:48px;height:48px;border-radius:9px;display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:18px}
.pain-ico.one{background:linear-gradient(135deg,var(--ink-700),var(--ink-600))}
.pain-ico.two{background:linear-gradient(135deg,var(--gold-deep),var(--gold))}
.pain-ico.three{background:linear-gradient(135deg, #058468, #16B8A6)}
.pain-card h3{font-size:19px;font-weight:700;margin-bottom:10px;color:var(--ink-text)}
.pain-card p{font-size:14px;color:var(--ink-2);line-height:1.85}
.pain-card .no{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.2em;color:var(--gold-deep);background:rgba(201,162,75,.12);padding:3px 10px;border-radius:3px;margin-bottom:14px}

/* ===== 建设目标（深色双面板） ===== */
.goals{background:linear-gradient(170deg,var(--ink-950) 0%,var(--ink-900) 50%,var(--ink-850) 100%);color:#fff}
.goals .h2{color:#fff;}
.goal-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.goal-panel{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-lg);padding:36px 32px;position:relative;overflow:hidden}
.goal-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--gold),transparent)}
.goal-panel .g-tag{font-size:12px;font-weight:700;letter-spacing:.22em;color:var(--gold-light)}
.goal-panel h3{font-family:var(--font);font-size:24px;font-weight:700;margin:12px 0 16px;color:#fff}
.goal-panel h3 span{color:var(--gold-light)}
.goal-panel ul{display:grid;gap:13px;margin-top:6px}
.goal-panel li{display:flex;gap:12px;font-size:14.5px;color:rgba(255,255,255,.8);line-height:1.8}
.goal-panel li svg{flex:none;margin-top:5px;color:var(--gold-light)}
.goal-ico{width:54px;height:54px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:20px;background:linear-gradient(135deg,var(--ink-700),var(--ink-600));box-shadow:0 10px 24px rgba(46,111,183,.28)}
.goal-ico.gold{background:linear-gradient(135deg,var(--gold-deep),var(--gold));box-shadow:0 10px 24px rgba(201,162,75,.3)}

/* ===== 实施范围（浅色 5 卡） ===== */
.scope{background:var(--paper)}
.scope-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.scope-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:26px 22px;box-shadow:var(--shadow-card);position:relative;transition:transform .25s ease,border-color .25s ease}
.scope-card:hover{transform:translateY(-5px);border-color:rgba(201,162,75,.55)}
.scope-card .s-no{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:6px;background:linear-gradient(135deg,var(--ink-700),var(--ink-600));color:#fff;font-size:14px;font-weight:700;margin-bottom:16px}
.scope-card h3{font-size:17px;font-weight:700;margin-bottom:10px;color:var(--ink-text)}
.scope-card p{font-size:13px;color:var(--ink-2);line-height:1.8}
.scope-card .tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.scope-card .tag{font-size:11.5px;font-weight:600;color:var(--gold-deep);background:rgba(201,162,75,.1);border:1px solid rgba(201,162,75,.3);padding:4px 10px;border-radius:3px}

/* ===== 核心能力（深色网格） ===== */
.capabilities{background:linear-gradient(170deg,var(--ink-950) 0%,var(--ink-900) 52%,var(--ink-850) 100%);color:#fff}
.capabilities .h2 {color:#fff;}
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cap{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.11);border-radius:var(--r-md);padding:26px 22px;transition:transform .25s ease,border-color .25s ease}
.cap:hover{transform:translateY(-5px);border-color:rgba(201,162,75,.5)}
.cap .c-ic{width:44px;height:44px;border-radius:8px;background:linear-gradient(135deg,var(--gold-deep),var(--gold));display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px}
.cap b{display:block;font-size:15.5px;font-weight:700;color:#fff;margin-bottom:7px}
.cap span{font-size:13px;color:rgba(255,255,255,.62);line-height:1.75}

/* ===== 实施保障（浅色） ===== */
.guarantee{background:var(--paper)}
.screen-card{background:#fff;border:1px solid rgba(15, 36, 71, .10);border-radius:20px;padding:18px;box-shadow:0 10px 34px rgba(10, 31, 69, .08)}
.screen-card img{border-radius:14px;width:100%}
.step-row{display:grid;grid-template-columns:1fr 1.06fr;gap:56px;align-items:center;padding:56px 0;border-top:1px solid var(--line)}
.step-row:first-of-type{border-top:none}
.step-info .step-no{display:flex;align-items:center;gap:16px;margin-bottom:18px}
.step-no b{font-size:52px;font-weight:800;line-height:1;color:transparent;-webkit-text-stroke:1.6px var(--ink-600);letter-spacing:.02em}
.step-no span{font-size:13px;font-weight:600;letter-spacing:.2em;color:var(--ink-3);text-transform:uppercase;padding-top:10px}
.step-info h3{font-size:26px;font-weight:800;margin-bottom:14px;line-height:1.4}
.step-info p{font-size:15px;color:var(--ink-2);margin-bottom:16px}
.step-tags{display:flex;flex-wrap:wrap;gap:9px}
.tag{font-size:12.5px;font-weight:600;color:var(--ink-700);background:#ebf2fc;border:1px solid rgba(31,111,255,.16);padding:6px 12px;border-radius:999px}
.step-media{position:relative}
.step-media .screen-card{overflow:hidden}
.step-media .screen-card img{transition:transform .45s ease}
.step-media:hover .screen-card img{transform:scale(1.02)}
.step-media .float-badge{position:absolute;left:-18px;bottom:-16px;display:flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:12px 16px;box-shadow:var(--shadow-card);font-size:13px;font-weight:600;color:var(--ink-800)}
.float-badge .dot{width:8px;height:8px;border-radius:50%;background:#3DD68C;box-shadow:0 0 0 4px rgba(61,214,140,.18)}
.step-row:nth-child(even) .step-info{order:2}
.step-row:nth-child(even) .step-media{order:1}

/* ===== 项目计划（深色） ===== */
.plan{background:linear-gradient(170deg,var(--ink-950) 0%,var(--ink-900) 55%,var(--ink-850) 100%);color:#fff}
.plan .h2{color:#fff;}
.timeline{position:relative;display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin:56px 0 48px}
.timeline::before{content:"";position:absolute;top:16px;left:3%;right:3%;height:1.5px;background:linear-gradient(90deg,transparent,var(--gold),var(--gold),transparent)}
.tl{position:relative;text-align:center;padding-top:10px}
.tl .dot{width:14px;height:14px;border-radius:50%;background:var(--gold);border:3px solid var(--ink-900);box-shadow:0 0 0 2px var(--gold);margin:0 auto 18px;position:relative}
.tl .phase{display:inline-block;font-size:12px;font-weight:700;color:var(--gold-light);background:rgba(201,162,75,.12);border:1px solid rgba(201,162,75,.35);padding:4px 12px;border-radius:3px;margin-bottom:10px}
.tl b{display:block;font-family:var(--font);font-size:16px;font-weight:700;color:#fff;margin-bottom:6px}
.tl span{font-size:12px;color:rgba(255,255,255,.58);line-height:1.65;display:block}
.work-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.work{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-md);padding:26px 24px;transition:transform .25s ease,border-color .25s ease}
.work:hover{transform:translateY(-5px);border-color:rgba(201,162,75,.5)}
.work .w-ic{width:44px;height:44px;border-radius:8px;background:linear-gradient(135deg,var(--ink-700),var(--ink-600));display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px}
.work b{display:block;font-size:16px;font-weight:700;color:#fff;margin-bottom:6px}
.work span{font-size:13px;color:rgba(255,255,255,.62);line-height:1.75;display:block}
.work .t-tag{display:inline-block;margin-top:12px;font-size:11.5px;font-weight:600;color:var(--gold-light);background:rgba(201,162,75,.12);border:1px solid rgba(201,162,75,.35);padding:4px 11px;border-radius:3px}

/* ===== 风险管理（浅色） ===== */
.risk{background:var(--paper)}
.risk-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.risk-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:26px;box-shadow:var(--shadow-card);transition:transform .25s ease,border-color .25s ease}
.risk-card:hover{transform:translateY(-5px);border-color:rgba(46,111,183,.5)}
.risk-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-bottom:14px}
.risk-head h3{font-size:17px;font-weight:700;display:flex;align-items:center;gap:10px}
.risk-head h3 .r-no{width:30px;height:30px;border-radius:6px;background:linear-gradient(135deg,var(--ink-700),var(--ink-600));color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}
.badges{display:flex;gap:8px}
.badge{font-size:11.5px;font-weight:700;padding:4px 11px;border-radius:3px;letter-spacing:.06em}
.badge.freq{color:var(--gold-deep);background:rgba(201,162,75,.12);border:1px solid rgba(201,162,75,.35)}
.badge.imp{color:var(--steel);background:rgba(46,111,183,.1);border:1px solid rgba(46,111,183,.3)}
.risk-card .sol{font-size:13px;color:var(--ink-2);line-height:1.85}
.risk-card .sol b{color:var(--ink-text)}
.risk-card .owner{display:inline-block;margin-top:14px;font-size:11.5px;font-weight:600;color:var(--ink-2);background:var(--paper-2);border:1px solid var(--line);padding:4px 11px;border-radius:3px}

/* ===== CTA ===== */
.cta-card{position:relative;overflow:hidden;background:linear-gradient(150deg,rgba(31,111,255,.22),rgba(79,184,255,.08)),var(--ink-850);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:64px 48px;color:#fff;text-align:center;margin-top:64px;}
.cta-card::before{content:"";position:absolute;top:-90px;right:-70px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(201,162,75,.2),transparent 70%)}
.cta-card::after{content:"";position:absolute;bottom:-110px;left:-60px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(46,111,183,.24),transparent 70%)}
.cta-card .inner{position:relative;z-index:2}
.cta-card h3{font-family:var(--font);font-size:clamp(26px,3.4vw,38px);font-weight:700;line-height:1.4;letter-spacing:.02em;margin-bottom:16px}
.cta-card h3 .hl{color:var(--gold-light)}
.cta-card p{color:rgba(255,255,255,.72);font-size:15.5px;max-width:660px;margin:0 auto 34px;line-height:1.9}
.cta-line{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap}
.cta-phone{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:#fff;padding:14px 26px;border-radius:999px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.08)}
.cta-phone svg{color:var(--gold-light)}

/* ===== 页脚 ===== */
.footer{background:var(--ink-950);color:rgba(255,255,255,.7);padding:30px 0}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;color:rgba(255,255,255,.4);font-size:14px;}

/* ===== 滚动显现 ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.reveal-d1{transition-delay:.1s}
.reveal-d2{transition-delay:.2s}
.reveal-d3{transition-delay:.3s}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .nav{display:none}
  .header-right .phone{display:none}
  .menu-btn{display:flex}
  .scope-grid{grid-template-columns:repeat(2,1fr)}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .arch-row{grid-template-columns:140px 1fr}
}
@media (max-width:900px){
  .section{padding:80px 0}
  .step-row{grid-template-columns:1fr;gap:36px}
  .step-row:nth-child(even) .step-info{order:0}
  .step-row:nth-child(even) .step-media{order:0}
  .goal-grid,.work-grid,.risk-grid{grid-template-columns:1fr}
  .pain-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:repeat(2,1fr);gap:28px}
  .timeline::before{display:none}
  .timeline .tl{padding-top:0}
  .cta-card{padding:48px 26px;margin-top: 30px;}
  .arch-row{grid-template-columns:1fr}
  .arch-name{flex-direction:row;gap:10px;padding:12px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .hero{padding-top:70px}
  .scope-grid,.cap-grid{grid-template-columns:1fr}
  .footer-links{gap:26px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}