/* ============================================================
   擎略咨询官网 V2 · 视觉与动效层（原生 CSS，零外部依赖）
   品牌：橙 #f26522 / 深蓝 #14202e / 金 #c9a06a / 纸感底色
   动效：所有时长与缓动集中在 :root 的 --dur-* / --ease-* token
   ============================================================ */

/* ---------- 1. Design tokens ---------- */
:root{
  /* 色彩体系 */
  --ink:#111827; --ink-2:#1d2430; --muted:#5f646d;
  --paper:#ffffff; --soft:#f5f5f5; --soft-2:#faf9f7;
  --paper-warm:#faf6f0; --paper-warm-2:#f5efe6;
  --warm:#F8F5F0;       /* V3 子菜单 hover 底 */
  --orange:#f26522; --orange-hover:#e05a1a; --orange-soft:#fdf1ea; --orange-line:#f7d9c8;
  --navy:#14202e; --navy-2:#1d3145; --gold:#c9a06a;
  --line:#e6e4e0; --line-2:#f0eeea; --grid-line:rgba(17,24,39,.07);

  /* 动效时长 */
  --dur-fast:.16s;      /* 微反馈（行高亮、下划线） */
  --dur-base:.24s;      /* 卡片 hover 联动（继承现状站 .22–.26s） */
  --dur-sheet:.42s;     /* 移动端抽屉 sheetIn */
  --dur-reveal:.7s;     /* 滚动显现 */
  --dur-page:.5s;       /* 页面进场 */
  --dur-drift:16s;      /* 呼吸光斑 / 网格漂移 */
  --dur-orbit:20s;      /* 装饰圆环旋转 */
  --dur-sub:.28s;       /* V3 导航子菜单收放 */

  /* 缓动曲线 */
  --ease-brand:cubic-bezier(.32,.72,0,1);   /* 现状站动效 DNA */
  --ease-reveal:cubic-bezier(.16,1,.3,1);
  --ease-soft:cubic-bezier(.45,.05,.55,.95);
  --ease:cubic-bezier(.25,.1,.25,1);

  /* 节奏与层次 */
  --stagger:80ms;
  --header-h:68px;
  --radius:14px;
  --shadow-sm:0 1px 2px rgba(20,32,46,.04);
  --shadow-soft:0 10px 26px rgba(20,32,46,.08);
  --shadow-lift:0 18px 38px -14px rgba(20,32,46,.26);
  --shadow-orange:0 12px 26px -10px rgba(242,101,34,.55);

  font-family:ui-sans-serif,system-ui,-apple-system,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  color:var(--ink); background:var(--paper); font-size:16px; line-height:1.6;
}

/* ---------- 2. Reset / base ---------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--paper);overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit}
::selection{background:rgba(242,101,34,.18);color:var(--ink)}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;border-radius:4px}
[id]{scroll-margin-top:calc(var(--header-h) + 20px)}
.container{max-width:1120px;margin:0 auto;padding:0 24px}

/* ---------- 3. 动效基元（keyframes + reveal + 页面进场） ---------- */
@keyframes pageIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes heroIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
@keyframes lineIn{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
@keyframes sheetIn{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:none}}
@keyframes gridDrift{from{transform:translate3d(0,0,0)}to{transform:translate3d(-24px,-18px,0)}}
@keyframes blobDrift{
  from{transform:translate3d(0,0,0) scale(1);opacity:.7}
  to{transform:translate3d(-46px,32px,0) scale(1.14);opacity:1}
}
@keyframes orbitSpin{from{transform:rotate(0)}to{transform:rotate(360deg)}}
@keyframes bandGlow{
  from{transform:translate3d(0,0,0) scale(1);opacity:.55}
  to{transform:translate3d(60px,-26px,0) scale(1.2);opacity:.9}
}

/* A2 · 页面进场 */
body{animation:pageIn var(--dur-page) var(--ease-reveal) both}

/* A1 · 滚动显现（JS 加 .in；stagger 延迟由 --rv-delay 提供） */
.reveal{
  opacity:0;transform:translateY(28px);
  transition:opacity var(--dur-reveal) var(--ease-reveal),transform var(--dur-reveal) var(--ease-reveal);
  transition-delay:var(--rv-delay,0ms);
  will-change:opacity,transform;
}
.reveal.in{opacity:1;transform:none}
/* 无 JS / 未分组时的 stagger 兜底 */
.stagger > .reveal:nth-child(2){--rv-delay:calc(var(--stagger) * 1)}
.stagger > .reveal:nth-child(3){--rv-delay:calc(var(--stagger) * 2)}
.stagger > .reveal:nth-child(4){--rv-delay:calc(var(--stagger) * 3)}
.stagger > .reveal:nth-child(5){--rv-delay:calc(var(--stagger) * 4)}
.stagger > .reveal:nth-child(6){--rv-delay:calc(var(--stagger) * 5)}
.stagger > .reveal:nth-child(7){--rv-delay:calc(var(--stagger) * 6)}
.stagger > .reveal:nth-child(8){--rv-delay:calc(var(--stagger) * 7)}

/* A5 · 数字滚动 */
.count{font-variant-numeric:tabular-nums;font-weight:700;color:var(--orange)}

/* ---------- 4. Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);backdrop-filter:blur(10px) saturate(1.4);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur-base) var(--ease-brand),background var(--dur-base) linear,border-color var(--dur-base) linear;
}
.site-header.scrolled{background:rgba(255,255,255,.95);box-shadow:0 10px 30px -18px rgba(20,32,46,.4);border-color:#ded9d1}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:9px;
  background:linear-gradient(140deg,var(--orange),#ff8a4a);color:#fff;font-size:19px;font-weight:700;
  box-shadow:0 6px 14px -8px rgba(242,101,34,.9);
  transition:transform var(--dur-base) var(--ease-brand),box-shadow var(--dur-base) var(--ease-brand);
}
.brand:hover .brand-mark{transform:translateY(-2px) rotate(-4deg);box-shadow:var(--shadow-orange)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:10px;letter-spacing:.14em;color:var(--muted);transition:color var(--dur-base) linear}
.brand:hover .brand-text em{color:var(--orange)}
.main-nav{display:flex;align-items:center;gap:26px}
.nav-item{position:relative}
.nav-row{display:flex;align-items:center;gap:5px}
/* 移动端 accordion 开关（桌面端移除，避免多余 tab 停留点与 :focus-within 误触发） */
.nav-check{display:none}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-2);padding:8px 2px;
  transition:color var(--dur-base) var(--ease-brand);
}
/* A3 · 导航高亮下划线：伪元素 scaleX 0→1，origin left */
.nav-link::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--orange),#f79a5c);
  transform:scaleX(0);transform-origin:left center;
  transition:transform var(--dur-base) var(--ease-brand);
}
.nav-link:hover{color:var(--orange)}
.nav-item:hover .nav-link,
.nav-item:focus-within .nav-link{color:var(--orange)}
.nav-link:hover::after,
.nav-item:hover .nav-link::after,
.nav-item:focus-within .nav-link::after,
.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--orange);font-weight:600}

/* A6 · 子菜单收放箭头：桌面端纯装饰，移动端变为点击热区 */
.nav-caret{
  display:inline-flex;align-items:center;justify-content:center;
  width:12px;height:12px;color:var(--muted);pointer-events:none;
  transition:transform var(--dur-sub) var(--ease-brand),color var(--dur-base) linear;
}
.nav-caret .tri{
  width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:4px solid currentColor;
}
.nav-item:hover .nav-caret,
.nav-item:focus-within .nav-caret{transform:rotate(180deg);color:var(--orange)}

/* A7 · 下拉面板：白底 / 圆角 12 / 上边 2px 橙线 / opacity+translateY(8px) .28s */
.nav-panel{
  position:absolute;top:calc(100% + 14px);left:-16px;z-index:60;
  min-width:288px;padding:10px;
  background:#fff;border:1px solid var(--line);border-top:2px solid var(--orange);
  border-radius:12px;
  box-shadow:0 4px 12px rgba(0,0,0,.05),0 20px 44px -24px rgba(20,32,46,.5);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--dur-sub) var(--ease-brand),
             transform var(--dur-sub) var(--ease-brand),
             visibility var(--dur-sub) linear;
}
/* 指针在导航项与面板之间移动时的缓冲带，避免下拉闪断 */
.nav-panel::before{content:'';position:absolute;left:0;right:0;top:-16px;height:16px}
.nav-item:hover > .nav-panel,
.nav-item:focus-within > .nav-panel{opacity:1;visibility:visible;transform:none}
.nav-sub{
  display:flex;align-items:flex-start;gap:11px;padding:10px 12px;border-radius:9px;
  transition:background-color var(--dur-base) var(--ease-brand),transform var(--dur-base) var(--ease-brand);
}
.nav-sub:hover{background:var(--warm);transform:translateX(2px)}
.nav-sub-ico{
  flex:none;width:8px;height:8px;margin-top:6px;border-radius:50%;
  background:var(--orange-line);
  transition:background-color var(--dur-base) linear,box-shadow var(--dur-base) var(--ease-brand);
}
.nav-sub:hover .nav-sub-ico{background:var(--orange);box-shadow:0 0 0 3px rgba(242,101,34,.14)}
.nav-sub strong{
  display:block;font-size:14px;font-weight:600;color:var(--ink);
  transition:color var(--dur-base) linear;
}
.nav-sub:hover strong{color:var(--orange)}
.nav-sub em{display:block;font-style:normal;font-size:12px;color:var(--muted);margin-top:3px;line-height:1.5}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{
  display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;border-radius:2px;
  transition:transform var(--dur-base) var(--ease-brand),opacity var(--dur-fast) linear;
}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 5. Buttons（D11 · hover 上浮 + 橙色柔光） ---------- */
.btn{
  position:relative;overflow:hidden;isolation:isolate;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:10px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--dur-base) var(--ease-brand),box-shadow var(--dur-base) var(--ease-brand),
             background-color var(--dur-base) linear,border-color var(--dur-base) linear,color var(--dur-base) linear;
}
.btn::after{
  content:'';position:absolute;inset:0;z-index:-1;
  background:linear-gradient(110deg,transparent 20%,rgba(255,255,255,.34) 50%,transparent 80%);
  transform:translateX(-120%);
  transition:transform var(--dur-sheet) var(--ease-brand);
}
.btn:hover::after{transform:translateX(120%)}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 18px -12px rgba(242,101,34,.9)}
.btn-primary:hover{background:var(--orange-hover);transform:translateY(-1px);box-shadow:var(--shadow-orange)}
.btn-ghost{border-color:var(--line);color:var(--ink-2);background:#fff}
.btn-ghost:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-1px);box-shadow:0 10px 22px -14px rgba(20,32,46,.6)}
.btn:active{transform:translateY(0)}
.btn-sm{padding:8px 18px;font-size:14px;border-radius:8px}

/* ---------- 6. Section ---------- */
.section{position:relative;padding:76px 0}
.section.alt{background:linear-gradient(180deg,#fdfbf8,var(--paper-warm) 42%,#fdfbf8)}
.section-head{max-width:720px;margin-bottom:42px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--orange);
  text-transform:uppercase;margin-bottom:12px;
}
.kicker::before{content:'';width:20px;height:1px;background:currentColor;opacity:.55}
.section-head.center .kicker::after{content:'';width:20px;height:1px;background:currentColor;opacity:.55}
.section-title{font-size:clamp(24px,3.2vw,34px);line-height:1.3;font-weight:700;color:var(--ink);letter-spacing:.01em}
.section-title .hl{color:var(--orange)}
.section-desc{margin-top:14px;color:var(--muted);font-size:16px}

/* ---------- 7. Hero（B6/B7/B8 · 多层渐变 + 网格线 + 呼吸光斑 + 旋转圆环） ---------- */
.hero{
  position:relative;overflow:hidden;isolation:isolate;
  padding:104px 0 88px;
  background:
    radial-gradient(940px 420px at 88% -14%,rgba(242,101,34,.17),transparent 62%),
    radial-gradient(700px 360px at 4% 6%,rgba(201,160,106,.15),transparent 60%),
    linear-gradient(118deg,rgba(242,101,34,.06),transparent 52%),
    linear-gradient(180deg,#fffdfb,var(--paper-warm) 56%,#fff);
}
/* 细网格线（继承现状站 rgba(17,24,39,.07) 1px / 24px） */
.hero::before{
  content:'';position:absolute;inset:-12% -6%;z-index:-2;pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,var(--grid-line) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(0deg,var(--grid-line) 0 1px,transparent 1px 24px);
  -webkit-mask-image:radial-gradient(860px 460px at 22% 34%,#000 8%,transparent 74%);
  mask-image:radial-gradient(860px 460px at 22% 34%,#000 8%,transparent 74%);
  animation:gridDrift var(--dur-drift) var(--ease-soft) infinite alternate;
}
/* 呼吸光斑 */
.hero::after{
  content:'';position:absolute;z-index:-1;top:-20%;right:-8%;
  width:min(560px,62vw);height:min(560px,62vw);border-radius:50%;pointer-events:none;
  background:radial-gradient(circle at 50% 50%,rgba(242,101,34,.26),rgba(242,101,34,0) 68%);
  filter:blur(8px);
  animation:blobDrift 14s var(--ease-soft) infinite alternate;
}
/* conic-gradient 装饰圆环 */
.hero-orbit{
  position:absolute;z-index:-1;left:-150px;bottom:-210px;
  width:440px;height:440px;border-radius:50%;pointer-events:none;
  background:conic-gradient(from 0deg,rgba(242,101,34,.26),rgba(201,160,106,.2) 28%,rgba(242,101,34,0) 58%,rgba(242,101,34,.26));
  -webkit-mask-image:radial-gradient(circle,transparent 56%,#000 58%,#000 78%,transparent 80%);
  mask-image:radial-gradient(circle,transparent 56%,#000 58%,#000 78%,transparent 80%);
  animation:orbitSpin var(--dur-orbit) linear infinite;
}
.hero-inner{position:relative;max-width:820px}
.hero-inner > *{animation:heroIn .8s var(--ease-reveal) both}
.hero-inner > *:nth-child(1){animation-delay:.06s}
.hero-inner > *:nth-child(2){animation-delay:.14s}
.hero-inner > *:nth-child(3){animation-delay:.34s}
.hero-inner > *:nth-child(4){animation-delay:.44s}
.hero-inner > *:nth-child(5){animation-delay:.54s}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--orange);
  background:rgba(253,241,234,.85);border:1px solid var(--orange-line);
  padding:6px 14px;border-radius:999px;margin-bottom:22px;
  box-shadow:0 6px 18px -14px rgba(242,101,34,.9);
}
/* B7 · 标题逐行浮现 */
.hero h1{font-size:clamp(32px,5vw,54px);line-height:1.22;font-weight:800;letter-spacing:.01em;animation:none;opacity:1}
.hero h1 .line{display:block;opacity:0;transform:translateY(22px);animation:lineIn .85s var(--ease-reveal) both}
.hero h1 .line:nth-child(1){animation-delay:.18s}
.hero h1 .line:nth-child(2){animation-delay:.32s}
.hero h1 .line:nth-child(3){animation-delay:.46s}
.hero h1 .hl{color:var(--orange)}
.hero p.lead{margin-top:22px;font-size:18px;color:var(--muted);max-width:640px}
.hero-actions{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{margin-top:26px;font-size:13px;color:var(--muted)}

/* ---------- 8. Page banner（内页页头） ---------- */
.page-banner{
  position:relative;overflow:hidden;isolation:isolate;
  padding:72px 0 56px;border-bottom:1px solid var(--line);
  background:
    radial-gradient(760px 320px at 94% -34%,rgba(242,101,34,.13),transparent 62%),
    linear-gradient(180deg,var(--paper-warm),#fff 84%);
}
.page-banner::before{
  content:'';position:absolute;inset:-14% -6%;z-index:-1;pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,var(--grid-line) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(0deg,var(--grid-line) 0 1px,transparent 1px 24px);
  -webkit-mask-image:radial-gradient(700px 320px at 14% 40%,#000 4%,transparent 72%);
  mask-image:radial-gradient(700px 320px at 14% 40%,#000 4%,transparent 72%);
  animation:gridDrift 18s var(--ease-soft) infinite alternate;
}
.page-banner > .container > *{animation:heroIn .7s var(--ease-reveal) both}
.page-banner > .container > *:nth-child(1){animation-delay:.05s}
.page-banner > .container > *:nth-child(2){animation-delay:.14s}
.page-banner > .container > *:nth-child(3){animation-delay:.26s}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{position:relative;transition:color var(--dur-base) linear}
.breadcrumb a::after{
  content:'';position:absolute;left:0;right:0;bottom:-2px;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left center;transition:transform var(--dur-base) var(--ease-brand);
}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb a:hover::after{transform:scaleX(1)}
.page-banner h1{font-size:clamp(26px,3.6vw,38px);font-weight:800;line-height:1.3}
.page-banner p.lead{margin-top:14px;color:var(--muted);font-size:16.5px;max-width:680px}

/* ---------- 9. Cards / Grid（C9 · 卡片 hover 联动） ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  position:relative;overflow:hidden;isolation:isolate;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow-sm);
  transition:transform var(--dur-base) var(--ease-brand),box-shadow var(--dur-base) var(--ease-brand),
             border-color var(--dur-base) var(--ease-brand);
}
/* 橙色 left-border 展开 */
.card::before{
  content:'';position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--orange),#f7a86e);
  transform:scaleY(0);transform-origin:top center;
  transition:transform var(--dur-sheet) var(--ease-brand);
}
/* 叠渐变（继承现状站 linear-gradient(118deg,…)） */
.card::after{
  content:'';position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(118deg,rgba(242,101,34,.22),transparent 52%);
  opacity:0;transition:opacity var(--dur-base) var(--ease-brand);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lift);border-color:#eccdb8}
.card:hover::before{transform:scaleY(1)}
.card:hover::after{opacity:.45}
.card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px}
.card .icon{
  width:44px;height:44px;border-radius:12px;background:var(--orange-soft);color:var(--orange);
  display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:16px;
  transition:background-color var(--dur-base) var(--ease-brand),transform var(--dur-base) var(--ease-brand),
             box-shadow var(--dur-base) var(--ease-brand);
}
.card:hover .icon{
  background:linear-gradient(140deg,var(--orange),#ff8f52);
  transform:translateY(-3px) rotate(-5deg);
  box-shadow:0 10px 20px -12px rgba(242,101,34,.95);
}
.card-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  color:var(--orange);font-weight:600;font-size:14px;
  transition:gap var(--dur-base) var(--ease-brand);
}
.card-link::after{content:'\2192';transition:transform var(--dur-base) var(--ease-brand)}
.card-link:hover{gap:10px}
.card:hover .card-link::after{transform:translateX(4px)}

/* ---------- 10. Steps（五步法流程条） ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:22px 16px;text-align:center;box-shadow:var(--shadow-sm);
  transition:transform var(--dur-base) var(--ease-brand),box-shadow var(--dur-base) var(--ease-brand),
             border-color var(--dur-base) var(--ease-brand);
}
.step:hover{transform:translateY(-5px);box-shadow:var(--shadow-lift);border-color:#eccdb8}
.step .no{
  display:inline-flex;width:32px;height:32px;border-radius:50%;
  background:linear-gradient(140deg,var(--orange),#ff8f52);color:#fff;font-weight:700;font-size:14px;
  align-items:center;justify-content:center;margin-bottom:10px;
  box-shadow:0 6px 14px -10px rgba(242,101,34,.95);
  transition:transform var(--dur-base) var(--ease-brand),box-shadow var(--dur-base) var(--ease-brand);
}
.step:hover .no{transform:scale(1.1) translateY(-1px);box-shadow:var(--shadow-orange)}
.step h4{font-size:16px;margin-bottom:6px}
.step p{font-size:12.5px;color:var(--muted);line-height:1.55}
.step::after{
  content:'';position:absolute;top:34px;right:-11px;width:7px;height:7px;
  border-top:2px solid var(--line);border-right:2px solid var(--line);transform:rotate(45deg);
  transition:border-color var(--dur-base) linear;
}
.step:last-child::after{display:none}
.step:hover::after{border-color:var(--orange-line)}

/* ---------- 11. Table（C10 · 行 hover + th 吸顶） ---------- */
.table-wrap{
  position:relative;overflow:auto;border:1px solid var(--line);border-radius:12px;background:#fff;
  box-shadow:var(--shadow-sm);
}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:640px}
th{
  position:sticky;top:0;z-index:2;
  background:linear-gradient(180deg,#fdfbf8,var(--soft-2));
  text-align:left;font-weight:700;color:var(--ink-2);padding:13px 16px;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
td{padding:13px 16px;border-bottom:1px solid var(--line-2);color:var(--muted);vertical-align:top}
tbody tr{transition:background-color var(--dur-fast) linear,box-shadow var(--dur-fast) linear}
tbody tr:hover{background:#fdf6f1}
tbody tr:hover td:first-child{color:var(--orange)}
tr:last-child td{border-bottom:0}
td:first-child{color:var(--ink);font-weight:600;transition:color var(--dur-fast) linear}

/* ---------- 12. Blocks（split / pill / quote / kv） ---------- */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.pill-list{display:flex;flex-direction:column;gap:14px}
.pill-item{
  display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:16px 18px;
  transition:transform var(--dur-base) var(--ease-brand),border-color var(--dur-base) var(--ease-brand),
             box-shadow var(--dur-base) var(--ease-brand);
}
.pill-item:hover{transform:translateX(4px);border-color:#eccdb8;box-shadow:var(--shadow-soft)}
.pill-item .dot{
  flex:none;width:26px;height:26px;border-radius:8px;background:var(--orange-soft);color:var(--orange);
  font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.pill-item h4{font-size:15px;margin-bottom:4px}
.pill-item p{font-size:13.5px;color:var(--muted)}
.quote{
  position:relative;overflow:hidden;isolation:isolate;
  background:linear-gradient(126deg,var(--navy),var(--navy-2));color:#fff;
  border-radius:18px;padding:44px 48px;
  box-shadow:0 26px 50px -30px rgba(20,32,46,.9);
}
.quote::before{
  content:'';position:absolute;z-index:-1;inset:auto -12% -60% auto;right:-12%;bottom:-60%;
  width:520px;height:520px;border-radius:50%;
  background:conic-gradient(from 90deg,rgba(201,160,106,.34),rgba(242,101,34,.28) 35%,transparent 62%,rgba(201,160,106,.34));
  -webkit-mask-image:radial-gradient(circle,transparent 52%,#000 56%,#000 80%,transparent 82%);
  mask-image:radial-gradient(circle,transparent 52%,#000 56%,#000 80%,transparent 82%);
  animation:orbitSpin calc(var(--dur-orbit) * 1.6) linear infinite;
}
.quote::after{
  content:'';position:absolute;left:0;top:44px;bottom:44px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--gold),rgba(201,160,106,0));
}
.quote h3{font-size:clamp(20px,2.6vw,26px);line-height:1.5;font-weight:700}
.quote p{margin-top:14px;color:rgba(255,255,255,.76);font-size:14.5px}
.note{font-size:12.5px;color:var(--muted);margin-top:12px}
.note a{transition:color var(--dur-base) linear}
.note a:hover{color:var(--orange-hover)}
.kv{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
.kv .box{
  background:linear-gradient(180deg,#fff,var(--soft-2));border:1px solid var(--line-2);
  border-radius:12px;padding:18px;
  transition:transform var(--dur-base) var(--ease-brand),border-color var(--dur-base) var(--ease-brand),
             box-shadow var(--dur-base) var(--ease-brand);
}
.kv .box:hover{transform:translateY(-4px);border-color:#eccdb8;box-shadow:var(--shadow-soft)}
.kv .box h5{font-size:13px;color:var(--orange);letter-spacing:.08em;margin-bottom:8px;font-weight:700}
.kv .box p{font-size:13.5px;color:var(--muted)}

/* ---------- 13. Partner logos ---------- */
.logo-band{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.logo-card{
  position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:28px 18px;text-align:center;box-shadow:var(--shadow-sm);
  transition:transform var(--dur-base) var(--ease-brand),border-color var(--dur-base) var(--ease-brand),
             box-shadow var(--dur-base) var(--ease-brand);
}
.logo-card::before{
  content:'';position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--orange),var(--gold));
  transform:scaleX(0);transform-origin:left center;
  transition:transform var(--dur-sheet) var(--ease-brand);
}
.logo-card:hover{transform:translateY(-5px);border-color:var(--orange-line);box-shadow:var(--shadow-soft)}
.logo-card:hover::before{transform:scaleX(1)}
.logo-card .lg{font-size:20px;font-weight:700;color:var(--ink-2);transition:color var(--dur-base) linear}
.logo-card:hover .lg{color:var(--orange)}
.logo-card .sub{font-size:12.5px;color:var(--muted);margin-top:6px}

/* ---------- 14. Detail 页 ---------- */
.detail-block{position:relative;padding:46px 0;border-bottom:1px solid var(--line)}
.detail-block:last-of-type{border-bottom:0}
.detail-block h2{font-size:22px;font-weight:700;display:flex;align-items:center;gap:12px}
.detail-block h2 .idx{
  display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:28px;border-radius:8px;
  background:var(--orange-soft);color:var(--orange);font-size:14px;font-weight:800;letter-spacing:.05em;
  transition:background-color var(--dur-base) var(--ease-brand),color var(--dur-base) var(--ease-brand);
}
.detail-block:hover h2 .idx{background:var(--orange);color:#fff}
.detail-block .lead{margin-top:10px;color:var(--muted);font-size:15px;max-width:760px}

/* ---------- 15. Price ---------- */
.price{font-size:24px;font-weight:800;color:var(--orange)}
.price small{font-size:13px;color:var(--muted);font-weight:400}

/* ---------- 16. CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;isolation:isolate;
  background:linear-gradient(120deg,var(--navy),var(--navy-2));color:#fff;border-radius:18px;
  padding:52px 56px;display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap;
  box-shadow:0 28px 56px -34px rgba(20,32,46,.95);
}
.cta-band::before{
  content:'';position:absolute;z-index:-1;top:-40%;right:-6%;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(242,101,34,.5),rgba(242,101,34,0) 70%);
  animation:bandGlow 16s var(--ease-soft) infinite alternate;
}
.cta-band::after{
  content:'';position:absolute;z-index:-1;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--orange),var(--gold));
}
.cta-band h3{font-size:clamp(20px,2.8vw,28px);font-weight:800;line-height:1.4}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.74);font-size:15px;max-width:560px}

/* ---------- 17. Contact / Form ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow-sm);
  transition:transform var(--dur-base) var(--ease-brand),border-color var(--dur-base) var(--ease-brand),
             box-shadow var(--dur-base) var(--ease-brand);
}
.contact-card:hover{transform:translateY(-5px);border-color:#eccdb8;box-shadow:var(--shadow-soft)}
.contact-card .icon{
  width:44px;height:44px;border-radius:12px;background:var(--orange-soft);
  display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px;
  transition:transform var(--dur-base) var(--ease-brand)}
.contact-card:hover .icon{transform:translateY(-3px) scale(1.04)}
.contact-card h4{font-size:16px;margin-bottom:6px}
.contact-card p{font-size:14px;color:var(--muted)}
.contact-card p a{color:var(--orange);font-weight:600}
form .field{margin-bottom:16px}
form label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px;color:var(--ink-2)}
form label .req,form label .remark{color:var(--orange)}
form input,form textarea,form select{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:9px;font:inherit;font-size:14px;
  background:#fff;color:var(--ink);
  transition:border-color var(--dur-base) linear,box-shadow var(--dur-base) var(--ease-brand),transform var(--dur-base) var(--ease-brand);
}
form textarea{resize:vertical}
form input:hover,form textarea:hover,form select:hover{border-color:#d9d4cc}
form input:focus,form textarea:focus,form select:focus{
  outline:0;border-color:var(--orange);box-shadow:0 0 0 3px rgba(242,101,34,.16);
}
.form-note{font-size:12px;color:var(--muted);margin-top:10px;margin-bottom:14px}
.form-ok{
  display:none;margin-top:14px;background:#eef8f0;border:1px solid #cde8d2;color:#1f7a35;
  padding:12px 16px;border-radius:9px;font-size:14px;
  animation:sheetIn var(--dur-sheet) var(--ease-brand) both;
}

/* ---------- 18. Footer ---------- */
.site-footer{position:relative;background:linear-gradient(180deg,var(--navy),#101a26);color:rgba(255,255,255,.78)}
.site-footer::before{
  content:'';position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--orange),var(--gold),transparent);
}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:58px 0 40px}
.site-footer h5{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.06em}
.footer-desc{font-size:13.5px;color:rgba(255,255,255,.66);max-width:340px}
.footer-note{font-size:12.5px;color:rgba(255,255,255,.55);margin-top:10px}
.site-footer a{
  display:block;font-size:13.5px;padding:4px 0;color:rgba(255,255,255,.72);
  transition:color var(--dur-base) linear,transform var(--dur-base) var(--ease-brand);
}
.site-footer a:hover{color:var(--gold);transform:translateX(4px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:18px 0;font-size:12.5px;color:rgba(255,255,255,.5);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
}

/* ---------- 19. 全站浮层（A4 回到顶部 / D12 阅读进度条，由 JS 注入） ---------- */
.read-progress{
  position:fixed;top:0;left:0;z-index:80;height:2px;width:0;
  background:linear-gradient(90deg,var(--orange),#f79a5c);
  box-shadow:0 0 10px rgba(242,101,34,.55);
  transition:width .12s linear;
}
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--ink-2);
  display:flex;align-items:center;justify-content:center;font-size:17px;line-height:1;cursor:pointer;
  box-shadow:0 12px 28px -14px rgba(20,32,46,.8);
  opacity:0;visibility:hidden;transform:translateY(14px) scale(.9);
  transition:opacity var(--dur-base) var(--ease-brand),transform var(--dur-base) var(--ease-brand),
             visibility var(--dur-base) linear,background-color var(--dur-base) linear,
             color var(--dur-base) linear,border-color var(--dur-base) linear,box-shadow var(--dur-base) var(--ease-brand);
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--orange);color:#fff;border-color:var(--orange);box-shadow:var(--shadow-orange);transform:translateY(-2px)}

/* ---------- 20. Responsive ---------- */
@media (max-width:960px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
  .split{grid-template-columns:1fr;gap:28px}
  .logo-band{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr 1fr}
  .quote{padding:36px 32px}
  .hero{padding:84px 0 72px}
}
@media (max-width:680px){
  .nav-toggle{display:block}
  .main-nav{
    display:none;position:absolute;top:var(--header-h);left:0;right:0;
    background:rgba(255,255,255,.98);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);box-shadow:0 18px 32px -24px rgba(20,32,46,.8);
    flex-direction:column;align-items:stretch;padding:14px 24px 20px;gap:4px;
  }
  /* 移动端抽屉：继承现状站 sheetIn .42s */
  .main-nav.open{display:flex;animation:sheetIn var(--dur-sheet) var(--ease-brand) forwards}
  .main-nav > a:not(.btn){padding:12px 4px;font-size:16px}
  .main-nav > a:not(.btn)::after{bottom:6px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .kv{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .cta-band{padding:36px 28px}
  .section{padding:54px 0}
  .hero{padding:68px 0 60px}
  .hero-orbit{width:300px;height:300px;left:-120px;bottom:-170px}
  .to-top{right:14px;bottom:18px;width:42px;height:42px}
}

/* ---------- 21. D13 · prefers-reduced-motion 降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-delay:0ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
    scroll-behavior:auto !important;
  }
  .reveal,.reveal.in,.hero h1 .line,.hero-inner > *,.page-banner > .container > *{opacity:1 !important;transform:none !important}
  .card:hover,.step:hover,.logo-card:hover,.contact-card:hover,.kv .box:hover,.pill-item:hover,
  .btn:hover,.to-top:hover{transform:none !important}
  .hero::before,.hero::after,.hero-orbit,.quote::before,.cta-band::before{animation:none !important}
}