/* Trisula88 — 浅色安全帮助中心：深蓝+银白+警示红，圆角白卡+左侧图标条 */
:root{--bg:#f5f7fa;--surface:#ffffff;--ink:#1b2a4a;--muted:#63748d;--accent:#1b2a4a;
--accent2:#c0392b;--line:#dde4ee;--ok:#1e7a46;--radius:14px;--maxw:1100px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI",Tahoma,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.75;font-size:16.5px}
img{max-width:100%;height:auto}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.3;font-weight:700}
.wrap,.main{max-width:var(--maxw);margin:0 auto;padding:0 20px}
/* header */
.hdr{background:#fff;box-shadow:0 1px 0 var(--line),0 6px 18px rgba(27,42,74,.06);position:sticky;top:0;z-index:50}
.hdr-in{max-width:var(--maxw);margin:0 auto;padding:11px 20px;display:flex;align-items:center;gap:24px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink)}
.logo-word{font-weight:800;font-size:1.2rem;letter-spacing:.02em}
.nav{margin-left:auto}
.nav-list{display:flex;gap:4px;list-style:none}
.nav-list a{display:block;padding:9px 15px;color:var(--muted);font-weight:600;border-radius:10px}
.nav-list a:hover{color:var(--ink);background:var(--bg);text-decoration:none}
.nav-list a.active{color:#fff;background:var(--accent)}
.nav-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px;cursor:pointer}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);margin:4px 0}
.badge18{flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;height:38px;padding:0 13px;
background:var(--accent2);color:#fff;font-weight:800;border-radius:999px;font-size:.85rem}
.badge18:hover{text-decoration:none;opacity:.9}
/* hero：居中排版，图片为下方宽幅横带 */
.hero{background:linear-gradient(180deg,#eef2f8 0%,var(--bg) 100%)}
.hero-in{max-width:var(--maxw);margin:0 auto;padding:56px 20px 0;text-align:center;display:flex;flex-direction:column;align-items:center}
.hero-copy{max-width:760px}
.hero-h1{font-size:clamp(1.85rem,4vw,2.7rem);margin-bottom:16px}
.hero-sub{color:var(--muted);font-size:1.05rem;margin-bottom:24px}
.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:24px}
.chip{background:#fff;border:1px solid var(--line);padding:8px 18px;border-radius:999px;color:var(--ink);box-shadow:0 2px 6px rgba(27,42,74,.05)}
.chip:hover{border-color:var(--accent);text-decoration:none}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}
.btn{display:inline-block;padding:13px 28px;font-weight:700;border-radius:999px;font-size:.97rem}
.btn:hover{text-decoration:none;box-shadow:0 6px 16px rgba(27,42,74,.18)}
.btn.gold{background:var(--accent);color:#fff}
.btn.line{background:#fff;color:var(--accent);border:1.5px solid var(--accent)}
.hero-img{width:100%;max-width:960px;border-radius:18px 18px 0 0;box-shadow:0 -8px 40px rgba(27,42,74,.12)}
/* bands & cards */
.band{max-width:var(--maxw);margin:0 auto;padding:46px 20px}
.band>h2,.hub-cards>h2,.related>h2{font-size:1.5rem;margin-bottom:8px}
.band>h2 small,.hub-cards>h2 small{display:block;color:var(--muted);font-weight:500;font-size:.9rem;margin-bottom:18px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(252px,1fr));gap:18px;margin-top:20px}
.card{display:flex;flex-direction:column;gap:8px;background:var(--surface);border-left:5px solid var(--accent);
border-radius:var(--radius);padding:20px 18px;color:var(--ink);box-shadow:0 3px 12px rgba(27,42,74,.07);transition:transform .15s}
.card:hover{text-decoration:none;transform:translateY(-3px);border-left-color:var(--accent2)}
.card-k{color:var(--accent2);font-size:.73rem;font-weight:800;text-transform:uppercase;letter-spacing:.1em}
.card-t{font-weight:700;font-size:1.02rem;line-height:1.4}
.card-d{color:var(--muted);font-size:.9rem}
/* checklist */
.checklist-band .checklist{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.checklist li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px 14px 46px;position:relative}
.checklist li::before{content:"✓";position:absolute;left:14px;top:12px;width:22px;height:22px;border-radius:50%;
background:var(--ok);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.85rem}
.checklist a{color:var(--ink);font-weight:600}
/* home prose */
.home-prose{max-width:840px;margin:0 auto;padding:16px 20px 28px}
.hsec{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 26px;margin-bottom:16px}
.hsec h2{font-size:1.28rem;margin-bottom:10px;color:var(--accent)}
.hsec p{margin-bottom:10px;color:#33445f}
/* article */
.page{max-width:840px;margin:0 auto;padding:28px 20px 56px}
.crumbs{margin-bottom:16px}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;font-size:.83rem;color:var(--muted)}
.crumbs li+li::before{content:"›";margin-right:6px;color:var(--accent2)}
.crumbs a{color:var(--muted)}
.pg-h1{font-size:clamp(1.55rem,3.2vw,2.2rem);margin-bottom:12px}
.meta-row{display:flex;flex-wrap:wrap;gap:16px;color:var(--muted);font-size:.83rem;margin-bottom:20px}
.lead{font-size:1.1rem;background:#eef2f8;border-radius:var(--radius);padding:20px 22px;margin-bottom:26px}
.art-body .blk{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 26px;margin-bottom:18px}
.art-body h2{font-size:1.32rem;margin-bottom:12px;color:var(--accent)}
.art-body p{margin-bottom:12px}
.blk-list{margin:0 0 12px 22px}
.blk-list li{margin-bottom:8px}
.tbl-wrap{overflow-x:auto;margin:16px 0}
.blk-table{border-collapse:collapse;width:100%;min-width:520px;font-size:.93rem;background:#fff}
.blk-table th{background:var(--accent);color:#fff;text-align:left;padding:11px 14px}
.blk-table td{border:1px solid var(--line);padding:10px 14px}
.callout{background:#fdf1ef;border:1px solid #f0c9c2;border-radius:var(--radius);padding:16px 18px;margin:16px 0;color:#7c2d21}
.toc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;margin-bottom:26px}
.toc ol{margin:8px 0 0 22px}
.toc li{margin-bottom:5px;font-size:.93rem}
.fig{margin:22px 0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px}
/* faq */
.faq{margin-top:34px}
.faq h2,.faq-cat h2{font-size:1.35rem;margin-bottom:14px;color:var(--accent)}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:15px 18px;font-weight:700;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"＋";float:right;color:var(--accent2);font-weight:700}
.faq-item[open] summary::after{content:"－"}
.faq-a{padding:0 18px 16px;color:#33445f}
.faq-cat{margin-bottom:32px}
/* boxes */
.rgbox{background:#fdf1ef;border:1.5px solid var(--accent2);border-radius:var(--radius);padding:16px 18px;margin:30px 0 6px;font-size:.95rem}
.agebox{display:flex;gap:18px;align-items:center;background:#fff;border:1.5px solid var(--accent2);padding:20px;border-radius:var(--radius);margin:20px 0}
.age18{font-size:1.5rem;font-weight:800;color:#fff;background:var(--accent2);border-radius:50%;width:70px;height:70px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.mailbox{background:#fff;border:1px solid var(--line);border-left:5px solid var(--accent);padding:20px 22px;border-radius:var(--radius);margin:20px 0}
.mailbox span{display:block;color:var(--muted);font-size:.85rem}
.mailbox strong{font-size:1.2rem;color:var(--accent)}
.related{margin-top:34px}
/* footer */
.ftr{background:var(--accent);color:#dbe4f2;margin-top:64px}
.ftr-in{max-width:var(--maxw);margin:0 auto;padding:46px 20px 26px}
.ftr-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.ftr-brand{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.ftr-name{font-weight:800;font-size:1.12rem;color:#fff}
.ftr-blurb{color:#b9c6da;font-size:.9rem}
.ftr-col h3{color:#fff;font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;margin-bottom:12px}
.ftr-col ul{list-style:none}
.ftr-col li{margin-bottom:8px}
.ftr-col a{color:#cdd9ea;font-size:.92rem}
.ftr-col a:hover{color:#fff}
.ftr .badge18{background:#fff;color:var(--accent2)}
.ftr-legal{border-top:1px solid rgba(255,255,255,.18);margin-top:32px;padding-top:20px;color:#a9b8cf;font-size:.8rem}
.ftr-legal p{margin-bottom:8px}
.p404{text-align:center;padding-top:70px}
@media(max-width:960px){.ftr-grid{grid-template-columns:1fr 1fr}.checklist-band .checklist{grid-template-columns:1fr}}
@media(max-width:860px){
.nav-toggle{display:block}
.nav-list{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:10px 20px 16px;box-shadow:0 12px 24px rgba(27,42,74,.12)}
.nav-list.open{display:flex}
}
@media(max-width:640px){body{font-size:15.5px}.cards{grid-template-columns:1fr}.ftr-grid{grid-template-columns:1fr}.hdr-in{gap:10px}.logo-word{font-size:1rem}}

/* ===== SEO polish：点击目标 >=24px（inline 链接热区） ===== */
.crumbs a{display:inline-block;padding:4px 0}
.toc a,.art-body a,.lead a,.faq-a a,.hsec a,.rgbox a,.callout a,
.blk-list a,.mailbox a,.ftr-col a,.ftr-blurb a,.meta-row a,
.card-d a,.tile-d a,.step-t a,.psteps a,.checklist a{padding:3px 0}