/* YISHI v2.1 — unified color system: navy × teal bridge, arc transitions, warm rhythm */
:root{
  --navy-900:#0a1828;--navy-800:#0e2438;--navy-700:#16374f;
  --teal-700:#0b5568;--teal-600:#0e7490;--teal-500:#128aa8;--teal-100:#e3f2f6;--teal-50:#f0f8fa;
  --ink:#12283a;--dim:#5b7086;--bg:#fdfefe;--bg2:#f1f6f8;--bd:#dde8ee;
  --gold:#d97706;--gold-100:#fdf3e3;--ok:#16a34a;
  --cyd:var(--teal-700);--cy:var(--teal-500);--dark:var(--navy-800);
  --r:16px;--shadow:0 10px 30px rgba(10,24,40,.08);
}
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}
body{font-family:"Segoe UI",system-ui,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}
::selection{background:#bfe3ee;color:var(--navy-900)}
h1,h2,h3{color:var(--navy-800)}

/* ── photo slot placeholder ── */
.ph{border:2px dashed #a9c4cf;border-radius:14px;background:repeating-linear-gradient(45deg,var(--teal-50),var(--teal-50) 12px,#e8f2f5 12px,#e8f2f5 24px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:18px;min-height:120px;color:var(--dim)}
.ph .cam{font-size:26px;margin-bottom:6px}
.ph b{font-size:12px;letter-spacing:2px;color:#6f93a3}
.ph i{font-style:normal;font-size:13px;margin-top:4px;max-width:420px}
.ph em{font-style:normal;font-size:11.5px;color:var(--gold);margin-top:6px;letter-spacing:.5px}
.ph.wide{min-height:280px}.ph.tall{min-height:340px}.ph.sq{aspect-ratio:1/1}

/* ── nav ── */
nav{position:sticky;top:0;z-index:50;background:rgba(253,254,254,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--bd)}
.nvin{display:flex;justify-content:space-between;align-items:center;height:66px}
.logo{font-weight:800;font-size:19px;color:var(--navy-800)}.logo b{color:var(--teal-600)}.logo i{font-style:normal;font-size:12.5px;color:var(--dim);margin-left:6px}
.menu{display:flex;gap:16px;font-size:13.5px;color:var(--dim);flex-wrap:nowrap}
.menu a{white-space:nowrap}
.menu a:hover{color:var(--teal-600)}
.menu a.on{color:var(--teal-600);font-weight:700;position:relative}
.menu a.on::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--teal-600)}
.btn{display:inline-block;padding:11px 24px;border-radius:999px;font-weight:700;font-size:14px;cursor:pointer;border:none;transition:.2s}
.btn-p{background:var(--teal-600);color:#fff}.btn-p:hover{background:var(--teal-500);transform:translateY(-1px)}
.btn-o{border:1.5px solid var(--bd);background:#fff;color:var(--ink)}.btn-o:hover{border-color:var(--teal-600);color:var(--teal-700)}
.btn-g{background:var(--gold);color:#fff}.btn-g:hover{filter:brightness(1.08)}
.langs{display:flex;gap:2px;margin-left:14px}
.langs button{background:none;border:none;color:var(--dim);cursor:pointer;font-size:12px;padding:0 4px}
.langs button.on{color:var(--teal-600);font-weight:700}
@media(max-width:1120px){.menu{gap:11px;font-size:12.5px}.btn-p{padding:9px 18px;font-size:13px}}
@media(max-width:1020px){.menu{display:none}}

/* ── hero: navy melting into teal ── */
.hero{position:relative;background:linear-gradient(168deg,var(--navy-900) 0%,var(--navy-800) 44%,#123a52 76%,#0e5468 100%);color:#eaf2fa;padding:84px 0 120px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 340px at 82% 12%,rgba(18,138,168,.28),transparent 70%),radial-gradient(500px 260px at 8% 90%,rgba(18,138,168,.14),transparent 70%)}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;z-index:1}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr}}
.tag{display:inline-block;padding:7px 16px;border:1px solid rgba(127,222,240,.4);border-radius:999px;font-size:11.5px;letter-spacing:3px;color:#7fdef0;margin-bottom:22px;background:rgba(127,222,240,.07)}
.hero h1{font-size:clamp(30px,4.6vw,50px);font-weight:800;line-height:1.18;letter-spacing:-.5px;color:#fff}
.hero h1 .g{color:#7fdef0}
.hero .sub{color:#b6c9d9;font-size:16.5px;margin:20px 0 30px;max-width:560px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.hero .ph{background:rgba(255,255,255,.06);border-color:rgba(127,222,240,.4);color:#b6c9d9}
.chips{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
.chip{display:flex;align-items:center;gap:8px;padding:9px 16px;border-radius:12px;background:rgba(18,138,168,.16);border:1px solid rgba(127,222,240,.22);font-size:12.5px;color:#b6c9d9}
.chip b{color:#fff;font-size:14px}.chip .dot{width:7px;height:7px;border-radius:50%;background:#4ade80}
/* arc bridge out of hero */
.arc{display:block;width:100%;height:64px;margin-top:-63px;position:relative;z-index:2}

/* ── sections ── */
section{padding:70px 0}
.sec-t{text-align:center;font-size:29px;font-weight:800;margin-bottom:6px;color:var(--navy-800)}
.sec-t em{font-style:normal;color:var(--teal-600)}
.sec-s{text-align:center;color:var(--dim);font-size:14.5px;margin-bottom:40px;max-width:720px;margin-left:auto;margin-right:auto}
.bg2{background:linear-gradient(180deg,var(--teal-50),var(--bg2))}
.eyebrow{text-align:center;font-size:11.5px;letter-spacing:3px;font-weight:700;color:var(--teal-600);text-transform:uppercase;margin-bottom:8px}

/* ── product lines ── */
.plg{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:920px){.plg{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.plg{grid-template-columns:1fr}}
.pl{border:1px solid var(--bd);border-radius:var(--r);overflow:hidden;background:#fff;transition:.25s;display:flex;flex-direction:column;box-shadow:0 2px 10px rgba(10,24,40,.04)}
.pl:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bcd8e2}
.pl .ph{border:none;border-bottom:2px dashed #a9c4cf;border-radius:0;min-height:150px}
.pl .tx{padding:16px 18px 18px}
.pl h3{font-size:15.5px;margin-bottom:5px}
.pl .belt{font-size:11.5px;color:var(--teal-600);font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:6px}
.pl p{font-size:13px;color:var(--dim)}
.note{margin-top:26px;text-align:center;color:var(--dim);font-size:13.5px}

/* ── policy radar (knowledge woven in) ── */
.radar{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:880px){.radar{grid-template-columns:1fr}}
.rc{border-left:3px solid var(--teal-600);background:#fff;border-radius:0 12px 12px 0;padding:16px 18px;box-shadow:0 2px 10px rgba(10,24,40,.04)}
.rc .when{font-size:11px;letter-spacing:1.5px;color:var(--teal-600);font-weight:700;text-transform:uppercase}
.rc b{display:block;font-size:14px;margin:4px 0 4px;color:var(--navy-800)}
.rc span{font-size:12.8px;color:var(--dim)}

/* ── steps ── */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
.step{position:relative;padding:30px 20px 22px;border:1px solid var(--bd);border-radius:var(--r);background:#fff}
.step .n{position:absolute;top:-14px;left:18px;width:32px;height:32px;border-radius:50%;background:var(--teal-600);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px}
.step h3{font-size:15px;margin:6px 0 7px}
.step p{font-size:12.8px;color:var(--dim)}
.sla{display:inline-block;margin-top:10px;font-size:11px;letter-spacing:1px;color:var(--teal-700);border:1px solid rgba(14,116,144,.35);border-radius:99px;padding:3px 10px;font-weight:700;background:#fff}

/* ── split ── */
.split{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
@media(max-width:880px){.split{grid-template-columns:1fr}}
.split h2{font-size:25px;font-weight:800;margin-bottom:12px}
.split h2 em{font-style:normal;color:var(--teal-600)}
.split p{color:var(--dim);font-size:14.5px;margin-bottom:12px}
.split .name{font-weight:700;color:var(--ink);margin-bottom:4px}

/* ── founding client: warm amber anchor ── */
.fc{background:linear-gradient(135deg,#7c4a03,#9a5b06 40%,var(--navy-800) 130%);color:#fdf3e3;border-radius:22px;padding:44px 40px;position:relative;overflow:hidden;box-shadow:var(--shadow)}
.fc::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 220px at 88% 0%,rgba(255,209,102,.32),transparent 70%)}
.fc .wrap{position:relative}
.fc h2{font-size:26px;font-weight:800;color:#ffd166}
.fc .badge{display:inline-block;background:rgba(255,209,102,.16);border:1px solid rgba(255,209,102,.5);color:#ffd166;border-radius:999px;padding:5px 14px;font-size:11.5px;font-weight:800;letter-spacing:1.5px;margin-bottom:14px}
.fc p.lead{color:#f3e6c8;font-size:15px;margin-bottom:22px;max-width:640px}
.fcg{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}
@media(max-width:820px){.fcg{grid-template-columns:1fr}}
.fcc{background:rgba(255,255,255,.08);border:1px solid rgba(255,209,102,.35);border-radius:14px;padding:18px}
.fcc b{display:block;color:#ffd166;font-size:15.5px;margin-bottom:5px}
.fcc span{font-size:12.8px;color:#e8d9b8}

/* ── pricing cards ── */
.prg{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:880px){.prg{grid-template-columns:1fr}}
.pc{border:1px solid var(--bd);border-radius:var(--r);padding:26px 24px;background:#fff;display:flex;flex-direction:column;box-shadow:0 2px 10px rgba(10,24,40,.04)}
.pc.hot{border-color:var(--teal-600);box-shadow:var(--shadow);background:linear-gradient(180deg,#fff,var(--teal-50))}
.pc .tag2{font-size:11px;letter-spacing:2px;color:var(--teal-600);font-weight:700}
.pc h3{font-size:17px;margin:6px 0 2px}
.pc .price{font-size:26px;font-weight:800;color:var(--teal-700);margin:10px 0 14px}
.pc ul{list-style:none;margin-bottom:20px;flex:1}
.pc li{font-size:13.5px;color:var(--dim);padding:6px 0;border-bottom:1px dashed var(--bd)}
.pc li::before{content:"✓ ";color:var(--ok);font-weight:700}

/* ── faq ── */
details{border:1px solid var(--bd);border-radius:12px;background:#fff;margin-bottom:10px;overflow:hidden}
summary{cursor:pointer;padding:15px 18px;font-weight:600;font-size:14.5px;list-style:none;color:var(--navy-800)}
summary::marker{display:none}
summary::after{content:"+";float:right;color:var(--teal-600);font-weight:800}
details[open] summary::after{content:"–"}
details[open]{border-color:#bcd8e2}
details .a{padding:0 18px 15px;font-size:13.5px;color:var(--dim)}

/* ── form (dark navy close, echoing hero) ── */
.frm{background:linear-gradient(168deg,var(--navy-800),#0e4356 130%);color:#eaf2fa;border-radius:22px;padding:48px 42px;position:relative;overflow:hidden}
.frm::before{content:"";position:absolute;inset:0;background:radial-gradient(420px 200px at 90% 10%,rgba(18,138,168,.3),transparent 70%)}
.frm h2{font-size:27px;font-weight:800;color:#fff}
.frm .s{color:#b6c9d9;font-size:14.5px;margin:8px 0 24px}
.frm input,.frm textarea{width:100%;padding:13px 15px;border-radius:11px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);color:#fff;font-size:14px;margin-bottom:12px;font-family:inherit;position:relative;z-index:1}
.frm input::placeholder,.frm textarea::placeholder{color:#8fa8bc}
.frm textarea{min-height:110px;resize:vertical}
.frm .grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
@media(max-width:640px){.frm .grid2{grid-template-columns:1fr}}
.mini{font-size:12px;color:#8fa8bc;margin-top:12px}

/* ── footer ── */
footer{background:var(--navy-900);color:#8fa3c8;padding:44px 0 30px;font-size:13px}
.fgt{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;margin-bottom:26px}
@media(max-width:760px){.fgt{grid-template-columns:1fr}}
footer h4{color:#eaf2fa;font-size:14px;margin-bottom:10px}
footer a{display:block;padding:3px 0}
footer a:hover{color:#7fdef0}
.fbt{border-top:1px solid rgba(255,255,255,.1);padding-top:16px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12px}

/* ── floats ── */
.fab{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px}
.fab a{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;box-shadow:0 8px 24px rgba(10,24,40,.28)}
.fab .wa{background:#25d366}.fab .em{background:var(--teal-600)}

/* ── workflow tool ── */
.wf{border:1px solid var(--bd);border-radius:18px;background:#fff;padding:30px;max-width:720px;margin:0 auto;box-shadow:var(--shadow)}
.wf .row{display:flex;gap:10px}
.wf input{flex:1;padding:13px 15px;border-radius:11px;border:1.5px solid var(--bd);font-size:14px;font-family:inherit}
.wf input:focus{outline:none;border-color:var(--teal-600)}
.wfout{display:none;margin-top:16px;padding:16px 18px;border-radius:12px;background:var(--teal-100);border:1px solid #b7dce8;font-size:13.5px;color:var(--teal-700)}

/* ── table ── */
.tbl{width:100%;border-collapse:collapse;font-size:13.5px;background:#fff}
.tbl th,.tbl td{padding:12px 14px;border:1px solid var(--bd);text-align:left}
.tbl th{background:var(--teal-50);font-size:12px;letter-spacing:1px;color:var(--teal-700)}
.tbl td.hl{background:var(--teal-100);font-weight:600;color:var(--teal-700)}
.tblwrap{overflow-x:auto;border-radius:14px;border:1px solid var(--bd);box-shadow:0 2px 10px rgba(10,24,40,.04)}

/* ── blog cards (subtle, not newsy) ── */
.ins{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:760px){.ins{grid-template-columns:1fr}}
.ic{border:1px solid var(--bd);border-radius:var(--r);background:#fff;padding:22px;transition:.25s;display:block}
.ic:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#bcd8e2}
.ic .k{font-size:11px;letter-spacing:2px;color:var(--teal-600);font-weight:700;text-transform:uppercase}
.ic b{display:block;font-size:15px;margin:8px 0 6px;color:var(--navy-800)}
.ic span{font-size:13px;color:var(--dim)}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
.reveal.in{opacity:1;transform:none}

/* page header (subpages) */
.ph-hero{background:linear-gradient(168deg,var(--navy-900) 0%,var(--navy-800) 55%,#0e4356 100%);color:#eaf2fa;padding:56px 0 100px;position:relative;overflow:hidden}
.ph-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(560px 260px at 85% 20%,rgba(18,138,168,.26),transparent 70%)}
.ph-hero h1{font-size:clamp(26px,3.6vw,40px);font-weight:800;color:#fff;position:relative;z-index:1}
.ph-hero p{color:#b6c9d9;max-width:680px;margin-top:10px;position:relative;z-index:1}

/* ═══ real photos (v2.2) ═══ */
.hero-img{margin-top:6px;border-radius:16px;overflow:hidden;border:1px solid rgba(127,222,240,.35);box-shadow:0 22px 60px rgba(2,12,24,.45);position:relative}
.hero-img img{width:100%;display:block;aspect-ratio:16/9;object-fit:cover}
.hero-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,19,31,.08) 0%,rgba(6,19,31,0) 30%,rgba(6,19,31,.5) 100%);pointer-events:none}
.pl img.plim{width:100%;height:170px;object-fit:cover;display:block;border-bottom:1px solid var(--bd);transition:.3s}
.pl:hover img.plim{filter:saturate(1.1) brightness(1.03)}
.shot{margin:0;border-radius:14px;overflow:hidden;border:1px solid var(--bd);box-shadow:0 10px 30px rgba(10,24,40,.10);background:#fff}
.shot img{width:100%;display:block;object-fit:cover}
.shot.sq img{aspect-ratio:1/1}
.shot.wide img{aspect-ratio:16/10}
.shot figcaption{font-size:11.5px;color:var(--dim);padding:9px 14px;border-top:1px solid var(--bd);letter-spacing:.4px;background:#fff}

/* ═══ v2.3 line pages / quote mock ═══ */
.pl .more{margin-top:10px;font-size:13px;font-weight:700;color:var(--teal-700);text-decoration:none;letter-spacing:.3px}
.pl .more:hover{text-decoration:underline}
.cklist{list-style:none;padding:0;margin:14px 0 0}
.cklist li{padding:10px 0 10px 26px;border-bottom:1px solid var(--bd);position:relative;font-size:14px;line-height:1.55}
.cklist li::before{content:"✓";position:absolute;left:2px;top:10px;color:var(--teal-600);font-weight:800}
.cklist .rcv{display:block;font-size:12.5px;color:var(--dim);margin-top:2px}
.qmock{padding:18px 20px;background:#fff}
.qmock .qh{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.qmock .qh b{font-size:14px;letter-spacing:1px;color:var(--navy-800)}
.qmock .qh span{font-size:11.5px;color:var(--gold);font-weight:600}
.qmock table{width:100%;border-collapse:collapse;font-size:12.8px}
.qmock th{text-align:left;padding:8px 10px;background:var(--navy-800);color:#fff;font-weight:600;letter-spacing:.5px}
.qmock td{padding:9px 10px;border-bottom:1px solid var(--bd);color:var(--ink)}
.qmock tr:nth-child(even) td{background:var(--teal-50)}
.qmock .qf{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:11px;font-size:11.5px;color:var(--dim)}
.qmock .qf .ok{color:var(--ok);font-weight:700}

/* v2.5 smaller detail images */
.pl img.plim{height:140px}
.split .shot.wide img{aspect-ratio:4/3}
.split .shot.wide{max-width:480px}

/* ═══ v3.3 顶部联系条 + 文章 CTA ═══ */
.contactbar{background:linear-gradient(90deg,var(--teal-700),var(--teal-500));color:#fff;border-bottom:1px solid rgba(255,255,255,.18)}
.contactbar .cb-in{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:13px 22px}
.contactbar .cb-l{display:flex;flex-direction:column;gap:1px;min-width:0}
.contactbar .cb-l b{font-size:15px;letter-spacing:.2px}
.contactbar .cb-hint{font-size:12px;opacity:.92}
.contactbar .cb-r{display:flex;gap:10px;flex-wrap:wrap}
.contactbar .cb-r a{display:inline-flex;align-items:center;gap:7px;background:#fff;color:var(--teal-700);font-weight:700;font-size:13px;padding:9px 15px;border-radius:999px;transition:.2s;text-decoration:none}
.contactbar .cb-r a:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(10,24,40,.22)}
.contactbar .cb-r b{font-weight:800}
.postcta{margin:32px 0 4px;padding:20px 22px;border-radius:var(--r);background:var(--teal-50);border:1px solid var(--bd)}
.postcta h3{font-size:17.5px;margin-bottom:6px}
.postcta p{font-size:14px;color:var(--dim);margin-bottom:14px}
.postcta .row{display:flex;gap:10px;flex-wrap:wrap}
.postcta .row a{background:var(--teal-700);color:#fff;font-weight:700;font-size:13.5px;padding:10px 16px;border-radius:999px;text-decoration:none}
.postcta .row a.alt{background:#fff;color:var(--teal-700);border:1px solid var(--bd)}
@media(max-width:820px){.contactbar .cb-in{flex-direction:column;align-items:stretch;gap:10px}.contactbar .cb-l{text-align:center;align-items:center}.contactbar .cb-r{flex-direction:column}.contactbar .cb-r a{justify-content:center;font-size:12.5px;padding:9px 12px}}