/* ============================================================
   TradeKit — design system
   Brand: navy #0b2545 + orange #f2600c. Everything else is
   neutral depth: tints, hairlines, soft shadows, gradients.
   ============================================================ */

:root{
  /* ---- brand ---- */
  --navy:#0b2545;
  --navy-2:#133a63;
  --navy-3:#0a2039;
  --navy-700:#1b3b60;
  --orange:#f2600c;
  --orange-2:#d8540a;
  /* darker orange reserved for small text on white (keeps AA contrast) */
  --orange-ink:#c24d06;
  --orange-soft:#fff4ee;
  --orange-line:#ffd9c2;

  /* ---- neutrals ---- */
  --ink:#16202b;
  --ink-2:#33445a;
  --muted:#5b6b7f;
  --muted-2:#7d8b9c;
  --line:#e4e9f0;
  --line-2:#eef2f7;
  --bg:#ffffff;
  --bg-2:#f6f8fb;
  --bg-3:#eef2f7;
  --ok:#0f6e56;
  --ok-soft:#e7f5f0;

  /* ---- radii ---- */
  --radius:14px;
  --radius-lg:18px;
  --r-sm:10px;
  --r:14px;
  --r-lg:18px;
  --r-xl:26px;

  /* ---- elevation ---- */
  --sh-1:0 1px 2px rgba(11,37,69,.05);
  --sh-2:0 4px 14px rgba(11,37,69,.07);
  --sh-3:0 10px 30px rgba(11,37,69,.10);
  --sh-4:0 22px 52px rgba(11,37,69,.14);
  --shadow:0 10px 30px rgba(11,37,69,.10);
  --shadow-lg:0 22px 52px rgba(11,37,69,.14);

  /* ---- layout ---- */
  --maxw:1120px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);

  /* ---- icon masks (stroke SVG, tinted with currentColor/background) ---- */
  --ico-check:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='%23000'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Ccircle%20cx='12'%20cy='12'%20r='9'/%3E%3Cpath%20d='M8%2012.4l2.7%202.8L16.2%209.6'/%3E%3C/svg%3E");
  --ico-arrow:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='%23000'%20stroke-width='2.2'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Cpath%20d='M5%2012h14M13%206l6%206-6%206'/%3E%3C/svg%3E");
  --ico-download:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2024%2024'%20fill='none'%20stroke='%23000'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'%3E%3Cpath%20d='M12%203v12M7%2011l5%205%205-5M4%2020h16'/%3E%3C/svg%3E");
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:80px}
body{margin:0;font-family:var(--sans);font-size:16.5px;color:var(--ink);background:var(--bg);line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:rgba(242,96,12,.18);color:var(--navy)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
a:focus-visible,button:focus-visible,select:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:8px}

/* ---------- typography base ---------- */
h1,h2,h3,h4{color:var(--navy);margin:0 0 12px;font-weight:700;letter-spacing:-.022em;line-height:1.18}
h1{font-size:clamp(32px,4vw,44px);letter-spacing:-.03em;line-height:1.1}
h2{font-size:clamp(25px,2.8vw,33px)}
h3{font-size:18px}
h4{font-size:16px}
p{margin:0 0 14px}
strong,b{font-weight:700;color:var(--ink)}
ul,ol{padding:0;margin:0}

/* ============================================================
   HEADER
   ============================================================ */
.site-header{position:sticky;top:0;z-index:60;color:#fff;
  background:linear-gradient(180deg,#0d2b4d 0%,var(--navy) 100%);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 10px 30px rgba(11,37,69,.20),0 1px 0 rgba(255,255,255,.05) inset}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:66px;gap:18px}
.brand{display:flex;align-items:center;gap:11px;min-height:44px;color:#fff}
.brand .logo{width:34px;height:34px;flex:0 0 34px;border-radius:9px;background:#fff;
  box-shadow:0 0 0 1px rgba(255,255,255,.35),0 2px 6px rgba(0,0,0,.28)}
.brand .brand-txt{display:flex;flex-direction:column;line-height:1.18}
.brand .brand-name{font-weight:700;font-size:18.5px;letter-spacing:-.02em;color:#fff}
.brand small{font-size:11px;font-weight:500;color:#9fb6cc;letter-spacing:.02em}
.nav{display:flex;align-items:center;gap:3px;flex:1 1 auto;min-width:0;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav::-webkit-scrollbar{display:none}
.site-header .brand,.site-header .header-right{flex:0 0 auto}
.nav a{color:#c3d3e4;font-weight:500;font-size:14.5px;padding:9px 14px;border-radius:10px;min-height:44px;
  display:flex;align-items:center;transition:background .16s var(--ease),color .16s var(--ease)}
.nav a:hover{color:#fff;background:rgba(255,255,255,.10)}
.nav a.is-active{color:#fff;background:rgba(255,255,255,.13);box-shadow:inset 0 0 0 1px rgba(255,255,255,.10)}
.header-right{display:flex;align-items:center;gap:12px}
.lang-switch{background:rgba(255,255,255,.09);color:#fff;border:1px solid rgba(255,255,255,.22);
  border-radius:10px;padding:9px 11px;font:inherit;font-size:14px;min-height:44px;cursor:pointer;transition:.16s var(--ease)}
.lang-switch:hover{background:rgba(255,255,255,.16)}
.lang-switch option{color:var(--navy);background:#fff}
.menu-btn{display:none;width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;
  background:rgba(255,255,255,.09);color:#fff;border:1px solid rgba(255,255,255,.22);border-radius:10px;transition:.16s var(--ease)}
.menu-btn:hover{background:rgba(255,255,255,.18)}
.menu-btn svg{display:block}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;font-weight:600;font-size:15px;min-height:46px;
  border-radius:12px;padding:12px 22px;cursor:pointer;border:1px solid transparent;transition:.16s var(--ease);line-height:1.1;
  letter-spacing:-.005em}
.btn .ico-svg{width:18px;height:18px;flex:0 0 18px}
/* primary — orange, the one action you want taken */
.btn-accent{background:var(--orange-ink);color:#fff;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 8px 20px rgba(194,77,6,.26)}
.btn-accent:hover{background:#a8410a;transform:translateY(-1px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.20),0 12px 26px rgba(242,96,12,.34)}
/* secondary — quiet, structured */
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--line);box-shadow:var(--sh-1)}
.btn-ghost:hover{border-color:#c3d0de;color:var(--navy);transform:translateY(-1px);box-shadow:var(--sh-2)}
/* secondary on navy */
.btn-outline-light{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.28)}
.btn-outline-light:hover{background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.44);transform:translateY(-1px)}
.btn-lg{padding:15px 28px;font-size:16px}
/* WhatsApp 原生样式按钮：品牌绿 #25D366 + 官方图形 */
.btn-wa{background:#25D366;border-color:#25D366;color:#fff;gap:10px;box-shadow:0 8px 20px rgba(37,211,102,.26)}
.btn-wa:hover{background:#1FB855;border-color:#1FB855;transform:translateY(-1px);box-shadow:0 12px 26px rgba(37,211,102,.32)}
.btn-wa:focus-visible{outline-color:#0b2545}
.btn-wa svg{width:20px;height:20px;flex:0 0 20px;fill:currentColor}
.btn-lg.btn-wa svg{width:22px;height:22px;flex:0 0 22px}
.wa-num{font-weight:700;color:#128C7E;white-space:nowrap}
/* Telegram 原生样式按钮：品牌蓝 #0088cc + 官方纸飞机图形 */
.btn-tg{background:#0088cc;border-color:#0088cc;color:#fff;gap:10px;box-shadow:0 8px 20px rgba(0,136,204,.26)}
.btn-tg:hover{background:#0099e0;border-color:#0099e0;transform:translateY(-1px);box-shadow:0 12px 26px rgba(0,136,204,.32)}
.btn-tg:focus-visible{outline-color:#0b2545}
.btn-tg svg{width:20px;height:20px;flex:0 0 20px;fill:currentColor}
.btn-lg.btn-tg svg{width:22px;height:22px;flex:0 0 22px}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}

/* ============================================================
   HERO
   ============================================================ */
.hero{position:relative;overflow:hidden;padding:clamp(42px,4.6vw,60px) 0 clamp(34px,3.8vw,48px);
  background:
    radial-gradient(980px 520px at 92% -22%,rgba(242,96,12,.15),transparent 62%),
    radial-gradient(880px 520px at -12% -8%,rgba(19,58,99,.15),transparent 60%),
    linear-gradient(180deg,#f7f9fc 0%,#ffffff 76%)}
.hero:before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(11,37,69,.09) 1px,transparent 1.6px);
  background-size:26px 26px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%)}
.hero>.wrap{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:clamp(34px,4vw,56px);align-items:center}
.hero-copy{min-width:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.09em;
  text-transform:uppercase;color:var(--orange-ink);background:var(--orange-soft);border:1px solid var(--orange-line);
  padding:7px 14px;border-radius:999px;margin-bottom:20px;box-shadow:0 1px 2px rgba(242,96,12,.08)}
.eyebrow:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange);flex:0 0 6px}
.hero h1{font-size:clamp(34px,4.6vw,54px);line-height:1.05;letter-spacing:-.033em;margin:0 0 18px;color:var(--navy);max-width:21ch}
.hero .lead{font-size:clamp(16.5px,1.35vw,18.5px);line-height:1.6;color:var(--muted);max-width:54ch;margin:0 0 30px}
.hero-cta{display:flex;gap:13px;flex-wrap:wrap}
.hero-stats{display:flex;flex-wrap:wrap;gap:11px 24px;list-style:none;padding:22px 0 0;margin:30px 0 0;
  border-top:1px solid var(--line)}
.hero-stats li{display:inline-flex;align-items:center;gap:9px;color:var(--ink-2);font-size:14px;font-weight:600;letter-spacing:-.005em}
.hero-stats li:before{content:"";width:19px;height:19px;flex:0 0 19px;background:var(--ok);
  -webkit-mask:var(--ico-check) center/contain no-repeat;mask:var(--ico-check) center/contain no-repeat}

/* ---- hero mock card ---- */
.hero-visual{position:relative}
.hero-visual:after{content:"";position:absolute;z-index:0;inset:-16px -8px -16px 16px;
  background:radial-gradient(58% 58% at 58% 42%,rgba(242,96,12,.22),transparent 72%);filter:blur(10px)}
.mini{position:relative;z-index:1;background:#fff;border:1px solid rgba(11,37,69,.09);border-radius:16px;
  box-shadow:0 30px 60px -22px rgba(11,37,69,.32),0 2px 6px rgba(11,37,69,.06);overflow:hidden}
.mini-top{display:flex;align-items:center;gap:7px;padding:13px 16px;color:#cfe0f0;font-size:12.5px;
  background:linear-gradient(180deg,#143c66,var(--navy));border-bottom:1px solid rgba(255,255,255,.10)}
.mini-top i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.26)}
.mini-top i:nth-child(1){background:#ff5f57}
.mini-top i:nth-child(2){background:#febc2e}
.mini-top i:nth-child(3){background:#28c840}
.mini-top em{margin-left:auto;font-style:normal;font-weight:600;color:#9fb6cc;letter-spacing:.04em;font-size:11.5px;
  text-transform:uppercase}
.mini-body{padding:8px 18px 18px}
.mini-row{display:flex;justify-content:space-between;align-items:center;gap:14px;
  padding:12px 0;border-bottom:1px solid var(--line-2);font-size:14px;color:var(--muted)}
.mini-row:last-of-type{border-bottom:0}
.mini-row b{color:var(--navy);font-weight:700;white-space:nowrap}
.mini-row b.hl{color:var(--orange-ink);font-size:17.5px;letter-spacing:-.02em}
.mini-track{height:9px;border-radius:99px;background:var(--bg-3);margin:16px 0 12px;overflow:hidden;
  box-shadow:inset 0 1px 2px rgba(11,37,69,.06)}
.mini-track span{display:block;height:100%;width:62%;border-radius:99px;
  background:linear-gradient(90deg,var(--orange),#ff9a5c)}
.mini-foot{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}
.mini-foot b{color:var(--ok);font-size:14px;font-weight:700;background:var(--ok-soft);
  border-radius:999px;padding:4px 11px}
/* floating trust chip — pulls the mock into the layout instead of floating alone */
.mini-chip{position:absolute;z-index:2;left:-14px;bottom:-18px;display:inline-flex;align-items:center;gap:9px;
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:10px 16px;font-size:13px;font-weight:600;
  color:var(--ink-2);box-shadow:0 14px 30px rgba(11,37,69,.18)}
.mini-chip:before{content:"";width:18px;height:18px;flex:0 0 18px;background:var(--orange);
  -webkit-mask:var(--ico-download) center/contain no-repeat;mask:var(--ico-download) center/contain no-repeat}

/* chooser sits inside the hero — slightly smaller heading, tighter rhythm */
.hero .sec-head{margin-top:clamp(36px,4vw,52px);margin-bottom:clamp(18px,2.2vw,24px)}
.hero .sec-head h2{font-size:clamp(22px,2.4vw,27px);letter-spacing:-.022em}

/* ============================================================
   CHOOSER
   ============================================================ */
.chooser{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.choice{position:relative;overflow:hidden;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:22px;transition:.18s var(--ease);box-shadow:var(--sh-1)}
.choice:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--orange),#ff9a5c);transform:scaleX(0);transform-origin:left;transition:.28s var(--ease)}
.choice:hover{border-color:var(--orange-line);box-shadow:var(--shadow-lg);transform:translateY(-5px)}
.choice:hover:before{transform:scaleX(1)}
.choice .ico{width:46px;height:46px;border-radius:13px;color:var(--navy);display:grid;place-items:center;margin-bottom:16px;
  font-size:20px;background:linear-gradient(180deg,rgba(11,37,69,.075),rgba(11,37,69,.035));
  border:1px solid rgba(11,37,69,.07);transition:.18s var(--ease)}
.choice .ico svg,.choice .ico .ico-svg{width:23px;height:23px;stroke:currentColor;fill:none;stroke-width:1.7}
.choice:hover .ico{background:linear-gradient(180deg,#ff7a2f,var(--orange));color:#fff;border-color:transparent;
  box-shadow:0 10px 22px rgba(242,96,12,.30)}
.choice h3{margin:0 0 7px;font-size:17.2px;color:var(--navy);letter-spacing:-.018em;line-height:1.25}
.choice p{margin:0 0 14px;color:var(--muted);font-size:14.2px;line-height:1.55}
.choice .arrow{margin-top:auto;padding-top:4px;color:var(--orange-ink);font-weight:700;font-size:14px;
  display:inline-flex;align-items:center;gap:6px;transition:.18s var(--ease)}
.choice .arrow:after{content:"";width:16px;height:16px;flex:0 0 16px;background:currentColor;
  -webkit-mask:var(--ico-arrow) center/contain no-repeat;mask:var(--ico-arrow) center/contain no-repeat;
  transition:transform .18s var(--ease)}
.choice:hover .arrow:after{transform:translateX(4px)}
/* RTL：角色卡箭头镜像，hover 向左位移（与 LTR 对称） */
[dir="rtl"] .choice .arrow:after{transform:scaleX(-1)}
[dir="rtl"] .choice:hover .arrow:after{transform:scaleX(-1) translateX(4px)}

/* ============================================================
   SECTIONS
   ============================================================ */
.section{padding:clamp(44px,5vw,60px) 0}
.section.alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.band{position:relative;overflow:hidden;background:
    radial-gradient(880px 420px at 10% -14%,rgba(242,96,12,.20),transparent 62%),
    radial-gradient(760px 460px at 104% 118%,rgba(19,58,99,.60),transparent 60%),
    linear-gradient(180deg,#0e2c50 0%,var(--navy) 58%,var(--navy-3) 100%);
  color:#cfe0f0;border-top:1px solid rgba(255,255,255,.07);border-bottom:1px solid rgba(255,255,255,.07)}
/* faint enterprise grid, faded out at the edges */
.section.band:before{content:"";position:absolute;inset:0;pointer-events:none;
  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;
  -webkit-mask-image:radial-gradient(70% 70% at 50% 50%,#000,transparent 78%);
  mask-image:radial-gradient(70% 70% at 50% 50%,#000,transparent 78%)}
.section.band>.wrap{position:relative;z-index:1}
.section.band .sec-head h2{color:#fff}
.section.band .sec-head p{color:#c3d6e8}
.section.band .kicker{color:#ff9a5c}
.sec-head{margin-bottom:clamp(24px,3vw,32px);max-width:68ch}
.sec-head h2{font-size:clamp(27px,3.2vw,36px);letter-spacing:-.026em;margin:0 0 10px;line-height:1.14}
.sec-head p{color:var(--muted);font-size:clamp(16px,1.3vw,17.5px);line-height:1.6;margin:0;max-width:62ch}
.kicker{display:block;font-size:12px;font-weight:800;letter-spacing:.13em;text-transform:uppercase;
  color:var(--orange-ink);margin:0 0 10px}
.kicker:before{content:"";display:inline-block;width:18px;height:2px;border-radius:2px;background:currentColor;
  vertical-align:4px;margin-right:9px}

/* ============================================================
   CARDS / GRIDS
   ============================================================ */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid.cols-4{grid-template-columns:repeat(4,1fr);gap:18px}
.grid.cols-4 .card{padding:18px}
.grid.cols-4 .card h3{font-size:17px}
.grid.cols-4 .card p{font-size:13.8px}
.grid.cols-4 .card .price{font-size:18.5px}
.grid.cols-4 .card .btn{padding:11px 16px;font-size:14.5px}
.card{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;display:flex;flex-direction:column;transition:.18s var(--ease);box-shadow:var(--sh-1)}
.card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--orange),#ff9a5c);transform:scaleX(0);transform-origin:left;transition:.28s var(--ease);z-index:2}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#dde5ee}
.card:hover:before{transform:scaleX(1)}
.card .tag{display:inline-flex;align-items:center;font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;
  color:var(--orange-ink);background:var(--orange-soft);border:1px solid var(--orange-line);border-radius:999px;padding:4px 11px;
  margin-bottom:10px;align-self:flex-start}
.card h3{margin:0 0 6px;font-size:18px;color:var(--navy);letter-spacing:-.02em;line-height:1.25}
.card p{margin:0 0 14px;color:var(--muted);font-size:14.2px;line-height:1.55;flex:1}
.card .price{font-weight:800;font-size:19.5px;color:var(--navy);margin-bottom:0;letter-spacing:-.02em}
/* cover art frame — 16:9 covers, clipped zoom on hover */
.thumb-frame{display:block;position:relative;overflow:hidden;border-radius:12px;margin-bottom:14px;
  background:var(--bg-3);border:1px solid var(--line-2);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.5)}
.thumb-frame .thumb{margin-bottom:0;border:0;border-radius:0}
.card:hover .thumb-frame .thumb{transform:scale(1.045)}
.card .thumb{width:100%;aspect-ratio:16/9;height:auto;object-fit:cover;border-radius:12px;
  margin-bottom:14px;display:block;background:var(--bg-3);border:1px solid var(--line-2);
  transition:transform .5s var(--ease)}
/* 按钮与上方文字/价格之间留出呼吸感（用户反馈"按钮快贴着文字了"） */
.card .btn,.card .btn-block{margin-top:16px}
.card .meta{font-size:12.5px;color:var(--muted);margin:0 0 12px;line-height:1.45;font-weight:500;
  letter-spacing:-.002em}
/* 列表里的链接也要够大（>=44px 触控目标），否则移动端"小到点不中" */
ul.check li a{display:inline-block;min-height:44px;padding:11px 0;color:inherit;
  text-decoration:underline;text-decoration-color:rgba(242,96,12,.45);text-underline-offset:3px}
ul.check li a:hover{color:var(--orange-ink)}

/* ============================================================
   TOOLS
   ============================================================ */
.tool-card{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--sh-2)}
.tool-card .ico{width:46px;height:46px;flex:0 0 46px;display:grid;place-items:center;
  background:linear-gradient(180deg,rgba(242,96,12,.12),rgba(242,96,12,.05));
  border:1px solid rgba(242,96,12,.16);border-radius:13px;color:var(--orange-ink);font-size:24px}
.tool-card .ico svg,.tool-card .ico .ico-svg{width:23px;height:23px;stroke:currentColor;fill:none;stroke-width:1.7}
.tool-card h3{margin:0 0 6px;color:var(--navy);font-size:18px;letter-spacing:-.02em}
.tool-card p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.6}
.tool-card>div{min-width:0}
/* 工具卡里的按钮与上方正文之间必须留白（用户反馈"按钮紧贴着文字"） */
.tool-card .btn{margin-top:18px}
.tool-card p{margin:0 0 2px}
.tool-card h3{margin-bottom:10px}

/* ============================================================
   SPLIT / FEATURE
   ============================================================ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,4vw,52px);align-items:center}
.split img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}
ul.check{list-style:none;padding:0;margin:16px 0 0}
ul.check li{position:relative;padding-left:32px;margin-bottom:6px;color:var(--ink-2);font-size:15.5px;line-height:1.5}
ul.check li:before{content:"";position:absolute;left:0;top:calc((1.5em - 20px)/2);width:20px;height:20px;background:var(--ok);
  -webkit-mask:var(--ico-check) center/contain no-repeat;mask:var(--ico-check) center/contain no-repeat}
ul.check li:after{content:"";position:absolute;left:0;top:calc((1.5em - 20px)/2);width:20px;height:20px;background:none;display:none}
/* 列表项是链接时：链接为凑满 44px 触摸面积带 11px 上下内边距，文字被压低 → 图标同步下移 11px */
ul.check li:has(a):before,ul.check li:has(a):after{top:calc(11px + (1.5em - 20px)/2)}

/* ============================================================
   NAVY BAND — "done for you"
   ============================================================ */
.band-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(28px,4vw,52px);align-items:center}
.band-panel{background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);padding:22px 24px;
  box-shadow:0 22px 44px rgba(3,12,24,.30)}
.band-panel-title{font-size:11.5px;font-weight:800;letter-spacing:.13em;text-transform:uppercase;color:#9fb6cc;
  margin:0 0 14px}
.band-steps{counter-reset:step;list-style:none;padding:0;margin:0}
.band-steps li{counter-increment:step;position:relative;display:flex;align-items:baseline;gap:12px;
  padding:10px 0;border-bottom:1px solid rgba(255,255,255,.09);font-size:15px;color:#e8eff7;letter-spacing:-.005em}
.band-steps li:last-child{border-bottom:0;padding-bottom:0}
.band-steps li:before{content:counter(step);flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;font-weight:700;color:#ffb489;
  background:rgba(242,96,12,.16);border:1px solid rgba(242,96,12,.34);transform:translateY(2px)}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{position:relative;overflow:hidden;color:#cfe0f0;padding:clamp(42px,4.6vw,58px) 0 22px;
  background:linear-gradient(180deg,var(--navy) 0%,var(--navy-3) 100%)}
.site-footer:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--orange),rgba(242,96,12,.25) 42%,rgba(242,96,12,0) 72%)}
.site-footer:after{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(620px 320px at 88% -10%,rgba(242,96,12,.16),transparent 70%)}
.site-footer>.wrap{position:relative;z-index:1}
.site-footer a{color:#b7cadb;transition:color .15s var(--ease),transform .15s var(--ease)}
.site-footer a:hover{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:clamp(24px,3vw,44px)}
.site-footer h4{color:#fff;margin:0 0 16px;font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;
  position:relative;padding-bottom:11px}
.site-footer h4:after{content:"";position:absolute;left:0;bottom:0;width:22px;height:2px;border-radius:2px;background:var(--orange)}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:0;font-size:14.5px}
.site-footer li a{display:block;padding:12px 0;line-height:1.4;min-height:44px}
.site-footer li a:hover{transform:translateX(2px)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.11);margin-top:32px;padding-top:20px;font-size:13px;color:#8fa8c2;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 20px}
.foot-brand{display:flex;align-items:center;gap:11px;margin-bottom:8px}
/* brand block: keep the wordmark human, not an uppercase column heading */
.foot-brand h4{font-size:18.5px;letter-spacing:-.02em;text-transform:none;color:#fff;margin:0;padding:0}
.foot-brand h4:after{display:none}
.foot-logo{width:38px;height:38px;border-radius:10px;background:#fff;vertical-align:middle;
  box-shadow:0 0 0 1px rgba(255,255,255,.35),0 2px 6px rgba(0,0,0,.28)}

/* ============================================================
   MISC
   ============================================================ */
.notice{background:var(--orange-soft);border:1px solid var(--orange-line);color:#8a3c0c;padding:14px 17px;
  border-radius:12px;font-size:14px;line-height:1.55;margin-top:20px}
.breadcrumb{font-size:13px;color:var(--muted);margin:0 0 14px}
.breadcrumb a{color:var(--muted);display:inline-block;padding:13px 6px;line-height:1.4}
.breadcrumb a:hover{color:var(--orange-ink)}
.pill{display:inline-flex;align-items:center;gap:6px;background:var(--bg-3);color:var(--navy);font-weight:600;
  font-size:13px;padding:6px 12px;border-radius:999px;border:1px solid var(--line)}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{max-width:480px}
  .mini-chip{position:static;margin-top:16px}
  .chooser{grid-template-columns:repeat(2,1fr)}
  .grid{grid-template-columns:1fr 1fr}
  .grid.cols-4{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:28px}
  .band-grid{grid-template-columns:1fr;gap:26px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px 30px}
}
@media(max-width:780px){
  .menu-btn{display:inline-flex}
  .nav{position:absolute;top:66px;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;
    background:var(--navy);border-bottom:1px solid rgba(255,255,255,.12);padding:10px 18px 16px;
    box-shadow:0 24px 48px rgba(11,37,69,.38);display:none}
  .nav.open{display:flex}
  .nav a{padding:13px 12px;font-size:16px;border-radius:10px;min-height:44px;display:flex;align-items:center}
}
@media(max-width:620px){
  .chooser,.grid{grid-template-columns:1fr}
  .grid.cols-4{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .hero{padding:44px 0 36px}
  .section{padding:42px 0}
  .hero-stats{gap:10px 18px}
  .hero h1{max-width:100%}
  .wrap{padding:0 18px}
  .btn-lg{padding:14px 22px;font-size:15.5px}
  .hero-cta .btn{flex:1 1 auto}
  .foot-bottom{justify-content:flex-start}
}
/* ---------- Email chooser (email.html) ---------- */
.email-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:0}
.email-card{display:flex;flex-direction:column;align-items:flex-start;gap:4px;background:#fff;border:1px solid var(--line);border-top:3px solid var(--brand,var(--orange));border-radius:16px;padding:20px;text-decoration:none;color:var(--navy);box-shadow:0 8px 26px rgba(11,37,69,.08);transition:transform .15s ease,box-shadow .15s ease}
.email-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(11,37,69,.14)}
.email-card .ec-ico{width:44px;height:44px;border-radius:12px;display:block;background:#fff;border:1px solid var(--line);padding:7px;object-fit:contain;margin-bottom:8px;box-shadow:0 2px 8px rgba(11,37,69,.08)}
.email-card .ec-name{font-size:18px;font-weight:800;letter-spacing:-.01em}
.email-card .ec-sub{font-size:13px;color:var(--muted)}
.copy-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-top:22px;font-size:15px;color:var(--muted)}
.copy-row code{background:rgba(11,37,69,.06);padding:6px 12px;border-radius:8px;font-size:14px;color:var(--navy);font-weight:700;word-break:break-all}
@media(max-width:680px){.email-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:460px){.email-grid{grid-template-columns:1fr}}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* ============================================================
   LANGUAGE SWITCH (header)
   ============================================================ */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.lang-switch-wrap{display:flex;align-items:center}
.lang-switch{background:rgba(255,255,255,.09);color:#fff;border:1px solid rgba(255,255,255,.22);
  border-radius:10px;padding:9px 11px;font:inherit;font-size:14px;min-height:44px;cursor:pointer;transition:.16s var(--ease)}
.lang-switch:hover{background:rgba(255,255,255,.16)}
.lang-switch option{color:var(--navy);background:#fff}
@media(max-width:780px){
  .brand small{display:none}
  .header-right{gap:8px}
}
@media(max-width:420px){
  .lang-switch{font-size:13px;padding:8px 8px;min-height:42px}
  .site-header .wrap{gap:10px}
}

/* ============================================================
   手机版减负：收起「角色选择」次级区块（桌面保留），少分岔
   ============================================================ */
@media (max-width:640px){
  .mc-toggle{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;
    min-height:52px;background:#fff;border:1px solid var(--line);border-radius:12px;
    padding:12px 16px;margin:14px 0 0;font:inherit;font-weight:800;font-size:15.5px;
    color:var(--navy);cursor:pointer;text-align:left;box-shadow:var(--sh-1)}
  .mc-toggle:after{content:"";flex:0 0 auto;width:9px;height:9px;margin-right:4px;
    border-right:2.5px solid var(--navy);border-bottom:2.5px solid var(--navy);
    transform:rotate(45deg);transition:transform .2s var(--ease)}
  .mc-toggle[aria-expanded="true"]:after{transform:rotate(-135deg)}
  .mc-collapsed{display:none !important}
}
@media (min-width:641px){ .mc-toggle{display:none} }



/* ============================================================
   手机版布局：压缩留白/字号，内容不变；移动端保留语言切换（不再锁英文）
   ============================================================ */
@media (max-width:640px){
  .lang-switch{display:inline-block;font-size:13px;padding:7px 9px;min-height:42px;max-width:46vw}
  .hero{padding:26px 0 22px}
  .hero h1{font-size:clamp(24px,7.2vw,30px);line-height:1.25}
  .hero .lead{font-size:15px;line-height:1.6}
  .hero-cta .btn{flex:1 1 auto;min-height:48px;padding:13px 14px;font-size:15px}
  .hero-stats{gap:6px 10px;font-size:13px;flex-wrap:wrap}
  .section{padding:30px 0}
  .sec-head{margin-bottom:14px}
  .sec-head h2{font-size:19px}
  .grid{gap:14px}
  .card{padding:16px}
  .card h3{font-size:16px}
  .band-steps li{font-size:14px;padding:7px 0}
  .split{gap:20px}
  .notice{font-size:13.5px;padding:12px 14px}
  .hero-visual{margin-top:18px}
}

/* ============================================================
   手机版排版美化（最终版）：卡片/字号/留白/折叠条/常驻条整体优化
   ============================================================ */
@media (max-width:640px){
  /* 首屏 */
  .hero{padding:22px 0 20px}
  .hero h1{font-size:clamp(25px,7.4vw,31px);line-height:1.22;letter-spacing:-.02em}
  .hero .lead{font-size:15.5px;line-height:1.65;margin-top:12px}
  .hero-cta{display:flex;flex-direction:column;gap:10px;margin-top:18px}
  .hero-cta .btn{width:100%;min-height:50px;padding:14px 16px;font-size:15.5px;
    display:inline-flex;align-items:center;justify-content:center}
  .hero-stats{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;list-style:none;padding:0}
  .hero-stats li{background:#fff;border:1px solid var(--line);border-radius:999px;
    padding:7px 12px;font-size:12.5px;color:var(--muted)}

  /* 区块节奏 */
  .section,.section.alt{padding:28px 0}
  .sec-head h2{font-size:20px}
  .sec-head p{font-size:14.5px}
  .kicker{font-size:11.5px}
  .notice{font-size:13.5px;padding:12px 14px;border-radius:12px}

  /* 产品卡片 */
  .grid{gap:14px}
  .card{padding:14px;border-radius:16px}
  .card .thumb-frame{border-radius:12px}
  .card h3{font-size:16.5px;margin-top:10px;line-height:1.35}
  .card .meta{font-size:12.5px}
  .card p{font-size:13.5px;line-height:1.6;margin-top:6px;
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .card .price{font-size:20px;font-weight:800;color:var(--orange-ink);margin:8px 0 10px}
  .card .btn{width:100%;min-height:48px;display:flex;align-items:center;justify-content:center}

  /* 折叠条 */
  .mc-toggle{min-height:56px;border-radius:14px;font-size:16px;padding:14px 16px;margin:16px 0 0;
    box-shadow:var(--sh-1)}
  .mc-toggle:after{width:10px;height:10px;border-right-width:2.5px;border-bottom-width:2.5px}

}

/* 手机版：VAT 勾选框加大触摸区（原 19px 太小） */
@media (max-width:640px){
  input.cb{width:22px !important;height:22px !important;margin-top:1px !important}
  label.cb-row{min-height:48px;align-items:center !important;padding-top:0 !important}
}


/* 页头品牌在小屏/大字体的手机上不再被裁：品牌先收缩，语言框永不压缩 */
.site-header .brand{flex:1 1 auto;min-width:0}
.site-header .brand .brand-txt{min-width:0}
.site-header .brand-name{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.site-header .lang-switch{flex:0 0 auto}

/* 子站 hero 封面图未加载完时给个底色，避免出现纯白空块 */
.hero-cover{background:linear-gradient(135deg,#0b2545,#123a6b)}